/****************************************************************************
- * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
+ * RRDtool 1.2.23 Copyright by Tobi Oetiker, 1997-2007
****************************************************************************
* rrd_gfx.c graphics wrapper for rrdtool
**************************************************************************/
/* #define DEBUG */
-#ifdef DEBUG
-# define DPRINT(x) (void)(printf x, printf("\n"))
+/* stupid MSVC doesnt support variadic macros = no debug for now! */
+#ifdef _MSC_VER
+# define RRDPRINTF()
#else
-# define DPRINT(x)
-#endif
+# ifdef DEBUG
+# define RRDPRINTF(...) fprintf(stderr, __VA_ARGS__);
+# else
+# define RRDPRINTF(...)
+# endif /* DEBUG */
+#endif /* _MSC_VER */
#include "rrd_tool.h"
#include <png.h>
#include <ft2build.h>
#include "rrd_gfx.h"
#include "rrd_afm.h"
+#include "unused.h"
/* lines are better drawn on the pixle than between pixles */
#define LINEOFFSET 0.5
+#define USE_PDF_FAKE_ALPHA 1
+#define USE_EPS_FAKE_ALPHA 1
+
typedef struct gfx_char_s *gfx_char;
struct gfx_char_s {
- FT_UInt index; /* glyph index */
- FT_Vector pos; /* location from baseline in 26.6 */
- FT_Glyph image; /* glyph bitmap */
+ FT_UInt index; /* glyph index */
+ FT_Vector pos; /* location from baseline in 26.6 */
+ FT_Glyph image; /* glyph bitmap */
};
typedef struct gfx_string_s *gfx_string;
struct gfx_string_s {
- unsigned int width;
- unsigned int height;
- size_t count; /* number of characters */
- gfx_char glyphs;
- size_t num_glyphs;
- FT_BBox bbox;
- FT_Matrix transform;
+ unsigned int width;
+ unsigned int height;
+ int count; /* number of characters */
+ gfx_char glyphs;
+ size_t num_glyphs;
+ FT_BBox bbox;
+ FT_Matrix transform;
};
/* compute string bbox */
-static void compute_string_bbox(gfx_string string);
+static void compute_string_bbox(
+ gfx_string string);
/* create a freetype glyph string */
-gfx_string gfx_string_create ( FT_Face face,
- const char *text, int rotation);
+gfx_string gfx_string_create(
+ gfx_canvas_t *canvas,
+ FT_Face face,
+ const char *text,
+ int rotation,
+ double tabwidth,
+ double size);
/* create a freetype glyph string */
-static void gfx_string_destroy ( gfx_string string );
+static void gfx_string_destroy(
+ gfx_string string);
static
-gfx_node_t *gfx_new_node( gfx_canvas_t *canvas,enum gfx_en type){
- gfx_node_t *node = art_new(gfx_node_t,1);
- if (node == NULL) return NULL;
- node->type = type;
- node->color = 0x0; /* color of element 0xRRGGBBAA alpha 0xff is solid*/
- node->size =0.0; /* font size, line width */
- node->path = NULL; /* path */
- node->points = 0;
- node->points_max =0;
- node->closed_path = 0;
- node->svp = NULL; /* svp */
- node->filename = NULL; /* font or image filename */
- node->text = NULL;
- node->x = 0.0;
- node->y = 0.0; /* position */
- node->angle = 0;
- node->halign = GFX_H_NULL; /* text alignement */
- node->valign = GFX_V_NULL; /* text alignement */
- node->tabwidth = 0.0;
- node->next = NULL;
- if (canvas->lastnode != NULL){
- canvas->lastnode->next = node;
- }
- if (canvas->firstnode == NULL){
- canvas->firstnode = node;
- }
- canvas->lastnode = node;
- return node;
-}
-
-gfx_canvas_t *gfx_new_canvas (void) {
- gfx_canvas_t *canvas = art_new(gfx_canvas_t,1);
+gfx_node_t *gfx_new_node(
+ gfx_canvas_t *canvas,
+ enum gfx_en type)
+{
+ gfx_node_t *node = art_new(gfx_node_t, 1);
+
+ if (node == NULL)
+ return NULL;
+ node->type = type;
+ node->color = 0x0; /* color of element 0xRRGGBBAA alpha 0xff is solid */
+ node->size = 0.0; /* font size, line width */
+ node->path = NULL; /* path */
+ node->points = 0;
+ node->points_max = 0;
+ node->closed_path = 0;
+ node->filename = NULL; /* font or image filename */
+ node->text = NULL;
+ node->x = 0.0;
+ node->y = 0.0; /* position */
+ node->angle = 0;
+ node->halign = GFX_H_NULL; /* text alignement */
+ node->valign = GFX_V_NULL; /* text alignement */
+ node->tabwidth = 0.0;
+ node->next = NULL;
+ if (canvas->lastnode != NULL) {
+ canvas->lastnode->next = node;
+ }
+ if (canvas->firstnode == NULL) {
+ canvas->firstnode = node;
+ }
+ canvas->lastnode = node;
+ return node;
+}
+
+gfx_canvas_t *gfx_new_canvas(
+ void)
+{
+ gfx_canvas_t *canvas = art_new(gfx_canvas_t, 1);
+
canvas->firstnode = NULL;
canvas->lastnode = NULL;
canvas->imgformat = IF_PNG; /* we default to PNG output */
canvas->interlaced = 0;
canvas->zoom = 1.0;
- return canvas;
+ canvas->font_aa_threshold = -1.0;
+ canvas->aa_type = AA_NORMAL;
+ return canvas;
}
/* create a new line */
-gfx_node_t *gfx_new_line(gfx_canvas_t *canvas,
- double X0, double Y0,
- double X1, double Y1,
- double width, gfx_color_t color){
- return gfx_new_dashed_line(canvas, X0, Y0, X1, Y1, width, color, 0, 0);
-}
-
-gfx_node_t *gfx_new_dashed_line(gfx_canvas_t *canvas,
- double X0, double Y0,
- double X1, double Y1,
- double width, gfx_color_t color,
- double dash_on, double dash_off){
-
- gfx_node_t *node;
- ArtVpath *vec;
- node = gfx_new_node(canvas,GFX_LINE);
- if (node == NULL) return NULL;
- vec = art_new(ArtVpath, 3);
- if (vec == NULL) return NULL;
- vec[0].code = ART_MOVETO_OPEN; vec[0].x=X0+LINEOFFSET; vec[0].y=Y0+LINEOFFSET;
- vec[1].code = ART_LINETO; vec[1].x=X1+LINEOFFSET; vec[1].y=Y1+LINEOFFSET;
- vec[2].code = ART_END;
-
- node->points = 3;
- node->points_max = 3;
- node->color = color;
- node->size = width;
- node->dash_on = dash_on;
- node->dash_off = dash_off;
- node->path = vec;
- return node;
+gfx_node_t *gfx_new_line(
+ gfx_canvas_t *canvas,
+ double X0,
+ double Y0,
+ double X1,
+ double Y1,
+ double width,
+ gfx_color_t color)
+{
+ return gfx_new_dashed_line(canvas, X0, Y0, X1, Y1, width, color, 0, 0);
+}
+
+gfx_node_t *gfx_new_dashed_line(
+ gfx_canvas_t *canvas,
+ double X0,
+ double Y0,
+ double X1,
+ double Y1,
+ double width,
+ gfx_color_t color,
+ double dash_on,
+ double dash_off)
+{
+
+ gfx_node_t *node;
+ ArtVpath *vec;
+
+ node = gfx_new_node(canvas, GFX_LINE);
+ if (node == NULL)
+ return NULL;
+ vec = art_new(ArtVpath, 3);
+ if (vec == NULL)
+ return NULL;
+ vec[0].code = ART_MOVETO_OPEN;
+ vec[0].x = X0 + LINEOFFSET;
+ vec[0].y = Y0 + LINEOFFSET;
+ vec[1].code = ART_LINETO;
+ vec[1].x = X1 + LINEOFFSET;
+ vec[1].y = Y1 + LINEOFFSET;
+ vec[2].code = ART_END;
+ vec[2].x = 0;
+ vec[2].y = 0;
+
+ node->points = 3;
+ node->points_max = 3;
+ node->color = color;
+ node->size = width;
+ node->dash_on = dash_on;
+ node->dash_off = dash_off;
+ node->path = vec;
+ return node;
}
/* create a new area */
-gfx_node_t *gfx_new_area (gfx_canvas_t *canvas,
- double X0, double Y0,
- double X1, double Y1,
- double X2, double Y2,
- gfx_color_t color) {
-
- gfx_node_t *node;
- ArtVpath *vec;
- node = gfx_new_node(canvas,GFX_AREA);
- if (node == NULL) return NULL;
- vec = art_new(ArtVpath, 5);
- if (vec == NULL) return NULL;
- vec[0].code = ART_MOVETO; vec[0].x=X0; vec[0].y=Y0;
- vec[1].code = ART_LINETO; vec[1].x=X1; vec[1].y=Y1;
- vec[2].code = ART_LINETO; vec[2].x=X2; vec[2].y=Y2;
- vec[3].code = ART_LINETO; vec[3].x=X0; vec[3].y=Y0;
- vec[4].code = ART_END;
-
- node->points = 5;
- node->points_max = 5;
- node->color = color;
- node->path = vec;
-
- return node;
+gfx_node_t *gfx_new_area(
+ gfx_canvas_t *canvas,
+ double X0,
+ double Y0,
+ double X1,
+ double Y1,
+ double X2,
+ double Y2,
+ gfx_color_t color)
+{
+
+ gfx_node_t *node;
+ ArtVpath *vec;
+
+ node = gfx_new_node(canvas, GFX_AREA);
+ if (node == NULL)
+ return NULL;
+ vec = art_new(ArtVpath, 5);
+ if (vec == NULL)
+ return NULL;
+ vec[0].code = ART_MOVETO;
+ vec[0].x = X0;
+ vec[0].y = Y0;
+ vec[1].code = ART_LINETO;
+ vec[1].x = X1;
+ vec[1].y = Y1;
+ vec[2].code = ART_LINETO;
+ vec[2].x = X2;
+ vec[2].y = Y2;
+ vec[3].code = ART_LINETO;
+ vec[3].x = X0;
+ vec[3].y = Y0;
+ vec[4].code = ART_END;
+ vec[4].x = 0;
+ vec[4].y = 0;
+
+ node->points = 5;
+ node->points_max = 5;
+ node->color = color;
+ node->path = vec;
+
+ return node;
}
/* add a point to a line or to an area */
-int gfx_add_point (gfx_node_t *node,
- double x, double y){
- if (node == NULL) return 1;
- if (node->type == GFX_AREA) {
- double X0 = node->path[0].x;
- double Y0 = node->path[0].y;
- node->points -= 2;
- art_vpath_add_point (&(node->path),
- &(node->points),
- &(node->points_max),
- ART_LINETO,
- x,y);
- art_vpath_add_point (&(node->path),
- &(node->points),
- &(node->points_max),
- ART_LINETO,
- X0,Y0);
- art_vpath_add_point (&(node->path),
- &(node->points),
- &(node->points_max),
- ART_END,
- 0,0);
- } else if (node->type == GFX_LINE) {
- node->points -= 1;
- art_vpath_add_point (&(node->path),
- &(node->points),
- &(node->points_max),
- ART_LINETO,
- x+LINEOFFSET,y+LINEOFFSET);
- art_vpath_add_point (&(node->path),
- &(node->points),
- &(node->points_max),
- ART_END,
- 0,0);
-
- } else {
- /* can only add point to areas and lines */
- return 1;
- }
- return 0;
+int gfx_add_point(
+ gfx_node_t *node,
+ double x,
+ double y)
+{
+ if (node == NULL)
+ return 1;
+ if (node->type == GFX_AREA) {
+ double X0 = node->path[0].x;
+ double Y0 = node->path[0].y;
+
+ node->points -= 2;
+ art_vpath_add_point(&(node->path),
+ &(node->points),
+ &(node->points_max), ART_LINETO, x, y);
+ art_vpath_add_point(&(node->path),
+ &(node->points),
+ &(node->points_max), ART_LINETO, X0, Y0);
+ art_vpath_add_point(&(node->path),
+ &(node->points),
+ &(node->points_max), ART_END, 0, 0);
+ } else if (node->type == GFX_LINE) {
+ node->points -= 1;
+ art_vpath_add_point(&(node->path),
+ &(node->points),
+ &(node->points_max),
+ ART_LINETO, x + LINEOFFSET, y + LINEOFFSET);
+ art_vpath_add_point(&(node->path),
+ &(node->points),
+ &(node->points_max), ART_END, 0, 0);
+
+ } else {
+ /* can only add point to areas and lines */
+ return 1;
+ }
+ return 0;
}
-void gfx_close_path (gfx_node_t *node) {
+void gfx_close_path(
+ gfx_node_t *node)
+{
node->closed_path = 1;
if (node->path[0].code == ART_MOVETO_OPEN)
- node->path[0].code = ART_MOVETO;
+ node->path[0].code = ART_MOVETO;
}
/* create a text node */
-gfx_node_t *gfx_new_text (gfx_canvas_t *canvas,
- double x, double y, gfx_color_t color,
- char* font, double size,
- double tabwidth, double angle,
- enum gfx_h_align_en h_align,
- enum gfx_v_align_en v_align,
- char* text){
- gfx_node_t *node = gfx_new_node(canvas,GFX_TEXT);
-/* if (angle != 0.0){*/
- /* currently we only support 0 and 270 */
-/* angle = 270.0;
- }*/
-
- node->text = strdup(text);
- node->size = size;
- node->filename = strdup(font);
- node->x = x;
- node->y = y;
- node->angle = angle;
- node->color = color;
- node->tabwidth = tabwidth;
- node->halign = h_align;
- node->valign = v_align;
+gfx_node_t *gfx_new_text(
+ gfx_canvas_t *canvas,
+ double x,
+ double y,
+ gfx_color_t color,
+ char *font,
+ double size,
+ double tabwidth,
+ double angle,
+ enum gfx_h_align_en h_align,
+ enum gfx_v_align_en v_align,
+ char *text)
+{
+ gfx_node_t *node = gfx_new_node(canvas, GFX_TEXT);
+
+ node->text = strdup(text);
+ node->size = size;
+ node->filename = strdup(font);
+ node->x = x;
+ node->y = y;
+ node->angle = angle;
+ node->color = color;
+ node->tabwidth = tabwidth;
+ node->halign = h_align;
+ node->valign = v_align;
#if 0
- /* debugging: show text anchor
- green is along x-axis, red is downward y-axis */
- if (1) {
- double a = 2 * M_PI * -node->angle / 360.0;
- double cos_a = cos(a);
- double sin_a = sin(a);
- double len = 3;
- gfx_new_line(canvas,
- x, y,
- x + len * cos_a, y - len * sin_a,
- 0.2, 0x00FF0000);
- gfx_new_line(canvas,
- x, y,
- x + len * sin_a, y + len * cos_a,
- 0.2, 0xFF000000);
- }
+ /* debugging: show text anchor
+ green is along x-axis, red is downward y-axis */
+ if (1) {
+ double a = 2 * M_PI * -node->angle / 360.0;
+ double cos_a = cos(a);
+ double sin_a = sin(a);
+ double len = 3;
+
+ gfx_new_line(canvas,
+ x, y, x + len * cos_a, y - len * sin_a, 0.2, 0x00FF0000);
+ gfx_new_line(canvas,
+ x, y, x + len * sin_a, y + len * cos_a, 0.2, 0xFF000000);
+ }
#endif
- return node;
-}
-
-int gfx_render(gfx_canvas_t *canvas,
- art_u32 width, art_u32 height,
- gfx_color_t background, FILE *fp){
- switch (canvas->imgformat) {
- case IF_PNG:
- return gfx_render_png (canvas, width, height, background, fp);
- case IF_SVG:
- return gfx_render_svg (canvas, width, height, background, fp);
- case IF_EPS:
- return gfx_render_eps (canvas, width, height, background, fp);
- case IF_PDF:
- return gfx_render_pdf (canvas, width, height, background, fp);
- default:
- return -1;
- }
-}
-
-static void gfx_string_destroy ( gfx_string string ) {
- unsigned int n;
- if (string->glyphs) {
- for (n=0; n<string->num_glyphs; ++n)
- FT_Done_Glyph (string->glyphs[n].image);
- free (string->glyphs);
- }
- free (string);
-}
-
-
-double gfx_get_text_width ( gfx_canvas_t *canvas,
- double start, char* font, double size,
- double tabwidth, char* text, int rotation){
- switch (canvas->imgformat) {
- case IF_PNG:
- return gfx_get_text_width_libart (canvas, start, font, size, tabwidth, text, rotation);
- case IF_SVG: /* fall through */
- case IF_EPS:
- case IF_PDF:
- return afm_get_text_width(start, font, size, tabwidth, text);
- default:
- return size * strlen(text);
- }
-}
-
-double gfx_get_text_width_libart ( gfx_canvas_t *canvas,
- double start, char* font, double size,
- double tabwidth, char* text, int rotation){
-
- int error;
- double text_width=0;
- FT_Face face;
- FT_Library library=NULL;
- gfx_string string;
-
- FT_Init_FreeType( &library );
- error = FT_New_Face( library, font, 0, &face );
- if ( error ) return -1;
- error = FT_Set_Char_Size(face, size*64,size*64, 100,100);
- if ( error ) return -1;
-
- string = gfx_string_create( face, text, rotation);
- text_width = string->width;
- gfx_string_destroy(string);
- FT_Done_FreeType(library);
- return text_width/64;
-}
-
-static void gfx_libart_close_path(gfx_canvas_t *canvas,
- gfx_node_t *node, ArtVpath **vec)
+ return node;
+}
+
+int gfx_render(
+ gfx_canvas_t *canvas,
+ art_u32 width,
+ art_u32 height,
+ gfx_color_t background,
+ FILE * fp)
{
- /* libart must have end==start for closed paths,
- even if using ART_MOVETO and not ART_MOVETO_OPEN
- so add extra point which is the same as the starting point */
- int points_max = node->points; /* scaled array has exact size */
- int points = node->points - 1;
- art_vpath_add_point (vec, &points, &points_max, ART_LINETO,
- (**vec).x, (**vec).y);
- art_vpath_add_point (vec, &points, &points_max, ART_END, 0, 0);
+ switch (canvas->imgformat) {
+ case IF_PNG:
+ return gfx_render_png(canvas, width, height, background, fp);
+ case IF_SVG:
+ return gfx_render_svg(canvas, width, height, background, fp);
+ case IF_EPS:
+ return gfx_render_eps(canvas, width, height, background, fp);
+ case IF_PDF:
+ return gfx_render_pdf(canvas, width, height, background, fp);
+ default:
+ return -1;
+ }
}
-static void gfx_round_scaled_coordinates(gfx_canvas_t *canvas,
- gfx_node_t *node, ArtVpath *vec)
+static void gfx_string_destroy(
+ gfx_string string)
{
- while (vec->code != ART_END) {
- vec->x = floor(vec->x - LINEOFFSET + 0.5) + LINEOFFSET;
- vec->y = floor(vec->y - LINEOFFSET + 0.5) + LINEOFFSET;
- vec++;
+ unsigned int n;
+
+ if (string->glyphs) {
+ for (n = 0; n < string->num_glyphs; ++n)
+ FT_Done_Glyph(string->glyphs[n].image);
+ free(string->glyphs);
+ }
+ free(string);
+}
+
+
+double gfx_get_text_width(
+ gfx_canvas_t *canvas,
+ double start,
+ char *font,
+ double size,
+ double tabwidth,
+ char *text,
+ int rotation)
+{
+ switch (canvas->imgformat) {
+ case IF_PNG:
+ return gfx_get_text_width_libart(canvas, start, font, size, tabwidth,
+ text, rotation);
+ case IF_SVG: /* fall through */
+ case IF_EPS:
+ case IF_PDF:
+ return afm_get_text_width(start, font, size, tabwidth, text);
+ default:
+ return size * strlen(text);
+ }
+}
+
+double gfx_get_text_width_libart(
+ gfx_canvas_t *canvas,
+ double UNUSED(start),
+ char *font,
+ double size,
+ double tabwidth,
+ char *text,
+ int rotation)
+{
+
+ int error;
+ double text_width = 0;
+ FT_Face face;
+ FT_Library library = NULL;
+ gfx_string string;
+
+ FT_Init_FreeType(&library);
+ error = FT_New_Face(library, font, 0, &face);
+ if (error) {
+ FT_Done_FreeType(library);
+ return -1;
}
+ error = FT_Set_Char_Size(face, size * 64, size * 64, 100, 100);
+ if (error) {
+ FT_Done_FreeType(library);
+ return -1;
+ }
+ string = gfx_string_create(canvas, face, text, rotation, tabwidth, size);
+ text_width = string->width;
+ gfx_string_destroy(string);
+ FT_Done_FreeType(library);
+ return text_width / 64;
}
+static void gfx_libart_close_path(
+ gfx_node_t *node,
+ ArtVpath ** vec)
+{
+ /* libart must have end==start for closed paths,
+ even if using ART_MOVETO and not ART_MOVETO_OPEN
+ so add extra point which is the same as the starting point */
+ int points_max = node->points; /* scaled array has exact size */
+ int points = node->points - 1;
+
+ art_vpath_add_point(vec, &points, &points_max, ART_LINETO,
+ (**vec).x, (**vec).y);
+ art_vpath_add_point(vec, &points, &points_max, ART_END, 0, 0);
+}
+
+
/* find bbox of a string */
-static void compute_string_bbox(gfx_string string) {
+static void compute_string_bbox(
+ gfx_string string)
+{
unsigned int n;
- FT_BBox bbox;
+ FT_BBox bbox;
bbox.xMin = bbox.yMin = 32000;
bbox.xMax = bbox.yMax = -32000;
- for ( n = 0; n < string->num_glyphs; n++ ) {
- FT_BBox glyph_bbox;
- FT_Glyph_Get_CBox( string->glyphs[n].image, ft_glyph_bbox_gridfit,
- &glyph_bbox );
- if (glyph_bbox.xMin < bbox.xMin) {
- bbox.xMin = glyph_bbox.xMin;
- }
- if (glyph_bbox.yMin < bbox.yMin) {
- bbox.yMin = glyph_bbox.yMin;
- }
- if (glyph_bbox.xMax > bbox.xMax) {
- bbox.xMax = glyph_bbox.xMax;
- }
- if (glyph_bbox.yMax > bbox.yMax) {
- bbox.yMax = glyph_bbox.yMax;
- }
- }
- if ( bbox.xMin > bbox.xMax ) {
- bbox.xMin = 0;
- bbox.yMin = 0;
- bbox.xMax = 0;
- bbox.yMax = 0;
+ for (n = 0; n < string->num_glyphs; n++) {
+ FT_BBox glyph_bbox;
+
+ FT_Glyph_Get_CBox(string->glyphs[n].image, ft_glyph_bbox_gridfit,
+ &glyph_bbox);
+ if (glyph_bbox.xMin < bbox.xMin) {
+ bbox.xMin = glyph_bbox.xMin;
+ }
+ if (glyph_bbox.yMin < bbox.yMin) {
+ bbox.yMin = glyph_bbox.yMin;
+ }
+ if (glyph_bbox.xMax > bbox.xMax) {
+ bbox.xMax = glyph_bbox.xMax;
+ }
+ if (glyph_bbox.yMax > bbox.yMax) {
+ bbox.yMax = glyph_bbox.yMax;
+ }
+ }
+ if (bbox.xMin > bbox.xMax) {
+ bbox.xMin = 0;
+ bbox.yMin = 0;
+ bbox.xMax = 0;
+ bbox.yMax = 0;
}
string->bbox.xMin = bbox.xMin;
string->bbox.xMax = bbox.xMax;
string->bbox.yMin = bbox.yMin;
string->bbox.yMax = bbox.yMax;
-}
+}
/* create a free type glyph string */
-gfx_string gfx_string_create(FT_Face face,const char *text,
- int rotation)
-{
-
- FT_GlyphSlot slot = face->glyph; /* a small shortcut */
- FT_Bool use_kerning;
- FT_UInt previous;
- FT_Vector ft_pen;
-
- gfx_string string;
- gfx_char glyph; /* current glyph in table */
- unsigned int n;
- int error;
-
- ft_pen.x = 0; /* start at (0,0) !! */
- ft_pen.y = 0;
-
- string = (gfx_string) malloc (sizeof(struct gfx_string_s));
- string->width = 0;
- string->height = 0;
- string->count = strlen (text);
- string->glyphs = (gfx_char) calloc (string->count,sizeof(struct gfx_char_s));
- string->num_glyphs = 0;
- string->transform.xx = (FT_Fixed)( cos(M_PI*(rotation)/180.0)*0x10000);
- string->transform.xy = (FT_Fixed)(-sin(M_PI*(rotation)/180.0)*0x10000);
- string->transform.yx = (FT_Fixed)( sin(M_PI*(rotation)/180.0)*0x10000);
- string->transform.yy = (FT_Fixed)( cos(M_PI*(rotation)/180.0)*0x10000);
-
- use_kerning = FT_HAS_KERNING(face);
- previous = 0;
- glyph = string->glyphs;
- for (n=0; n<string->count; n++, glyph++) {
- FT_Vector vec;
-
- /* initialize each struct gfx_char_s */
- glyph->index = 0;
- glyph->pos.x = 0;
- glyph->pos.y = 0;
- glyph->image = NULL;
-
- glyph->index = FT_Get_Char_Index( face, text[n] );
-
- /* compute glyph origin */
- if ( use_kerning && previous && glyph->index ) {
- FT_Vector kerning;
- FT_Get_Kerning (face, previous, glyph->index,
- ft_kerning_default, &kerning);
- ft_pen.x += kerning.x;
- ft_pen.y += kerning.y;
- }
-
- /* store current pen position */
- glyph->pos.x = ft_pen.x;
- glyph->pos.y = ft_pen.y;
-
- /* load the glyph image (in its native format) */
- /* for now, we take a monochrome glyph bitmap */
- error = FT_Load_Glyph (face, glyph->index, FT_LOAD_DEFAULT);
- if (error) {
- fprintf (stderr, "couldn't load glyph: %c\n", text[n]);
- continue;
- }
- error = FT_Get_Glyph (slot, &glyph->image);
- if (error) {
- fprintf (stderr, "couldn't get glyph from slot: %c\n", text[n]);
- continue;
+gfx_string gfx_string_create(
+ gfx_canvas_t *canvas,
+ FT_Face face,
+ const char *text,
+ int rotation,
+ double tabwidth,
+ double size)
+{
+
+ FT_GlyphSlot slot = face->glyph; /* a small shortcut */
+ FT_Bool use_kerning;
+ FT_UInt previous;
+ FT_Vector ft_pen;
+
+ gfx_string string = (gfx_string) malloc(sizeof(struct gfx_string_s));
+
+ gfx_char glyph; /* current glyph in table */
+ int n;
+ int error;
+ int gottab = 0;
+
+#ifdef HAVE_MBSTOWCS
+ wchar_t *cstr;
+ size_t clen = strlen(text) + 1;
+
+ cstr = malloc(sizeof(wchar_t) * clen); /* yes we are allocating probably too much here, I know */
+ string->count = mbstowcs(cstr, text, clen);
+ if (string->count == -1) {
+ /* conversion did not work, so lets fall back to just use what we got */
+ string->count = clen - 1;
+ for (n = 0; text[n] != '\0'; n++) {
+ cstr[n] = (unsigned char) text[n];
+ }
}
+#else
+ char *cstr = strdup(text);
- ft_pen.x += slot->advance.x;
- ft_pen.y += slot->advance.y;
+ string->count = strlen(text);
+#endif
- /* rotate glyph */
- vec = glyph->pos;
- FT_Vector_Transform (&vec, &string->transform);
- error = FT_Glyph_Transform (glyph->image, &string->transform, &vec);
- if (error) {
- fprintf (stderr, "couldn't transform glyph\n");
- continue;
- }
+ ft_pen.x = 0; /* start at (0,0) !! */
+ ft_pen.y = 0;
+
+
+ string->width = 0;
+ string->height = 0;
+ string->glyphs =
+ (gfx_char) calloc(string->count, sizeof(struct gfx_char_s));
+ string->num_glyphs = 0;
+ string->transform.xx =
+ (FT_Fixed) (cos(M_PI * (rotation) / 180.0) * 0x10000);
+ string->transform.xy =
+ (FT_Fixed) (-sin(M_PI * (rotation) / 180.0) * 0x10000);
+ string->transform.yx =
+ (FT_Fixed) (sin(M_PI * (rotation) / 180.0) * 0x10000);
+ string->transform.yy =
+ (FT_Fixed) (cos(M_PI * (rotation) / 180.0) * 0x10000);
+
+ use_kerning = FT_HAS_KERNING(face);
+ previous = 0;
+ glyph = string->glyphs;
+ for (n = 0; n < string->count; glyph++, n++) {
+ FT_Vector vec;
+
+ /* handle the tabs ...
+ have a witespace glyph inserted, but set its width such that the distance
+ of the new right edge is x times tabwidth from 0,0 where x is an integer. */
+ unsigned int letter = cstr[n];
+
+ letter = afm_fix_osx_charset(letter); /* unsafe macro */
+
+ gottab = 0;
+ if (letter == '\\' && n + 1 < string->count && cstr[n + 1] == 't') {
+ /* we have a tab here so skip the backslash and
+ set t to ' ' so that we get a white space */
+ gottab = 1;
+ n++;
+ letter = ' ';
+ }
+ if (letter == '\t') {
+ letter = ' ';
+ gottab = 1;
+ }
+ /* initialize each struct gfx_char_s */
+ glyph->index = 0;
+ glyph->pos.x = 0;
+ glyph->pos.y = 0;
+ glyph->image = NULL;
+ glyph->index = FT_Get_Char_Index(face, letter);
+
+ /* compute glyph origin */
+ if (use_kerning && previous && glyph->index) {
+ FT_Vector kerning;
+
+ FT_Get_Kerning(face, previous, glyph->index,
+ ft_kerning_default, &kerning);
+ ft_pen.x += kerning.x;
+ ft_pen.y += kerning.y;
+ }
- /* convert to a bitmap - destroy native image */
- error = FT_Glyph_To_Bitmap (&glyph->image, ft_render_mode_normal, 0, 1);
- if (error) {
- fprintf (stderr, "couldn't convert glyph to bitmap\n");
- continue;
- }
+ /* load the glyph image (in its native format) */
+ /* for now, we take a monochrome glyph bitmap */
+ error =
+ FT_Load_Glyph(face, glyph->index,
+ size >
+ canvas->font_aa_threshold ? canvas->aa_type ==
+ AA_NORMAL ? FT_LOAD_TARGET_NORMAL : canvas->
+ aa_type ==
+ AA_LIGHT ? FT_LOAD_TARGET_LIGHT :
+ FT_LOAD_TARGET_MONO : FT_LOAD_TARGET_MONO);
+ if (error) {
+ RRDPRINTF("couldn't load glyph: %c\n", letter)
+ continue;
+ }
+ error = FT_Get_Glyph(slot, &glyph->image);
+ if (error) {
+ RRDPRINTF("couldn't get glyph %c from slot %d\n", letter,
+ (int) slot)
+ continue;
+ }
+ /* if we are in tabbing mode, we replace the tab with a space and shift the position
+ of the space so that its left edge is where the tab was supposed to land us */
+ if (gottab) {
+ /* we are in gridfitting mode so the calculations happen in 1/64 pixles */
+ ft_pen.x =
+ tabwidth * 64.0 * (float) (1 +
+ (long) (ft_pen.x /
+ (tabwidth * 64.0))) -
+ slot->advance.x;
+ }
+ /* store current pen position */
+ glyph->pos.x = ft_pen.x;
+ glyph->pos.y = ft_pen.y;
- /* increment number of glyphs */
- previous = glyph->index;
- string->num_glyphs++;
- }
-/* printf ("number of glyphs = %d\n", string->num_glyphs);*/
- compute_string_bbox( string );
- string->width = string->bbox.xMax - string->bbox.xMin;
- string->height = string->bbox.yMax - string->bbox.yMin;
- return string;
+ ft_pen.x += slot->advance.x;
+ ft_pen.y += slot->advance.y;
+
+ /* rotate glyph */
+ vec = glyph->pos;
+ FT_Vector_Transform(&vec, &string->transform);
+ error = FT_Glyph_Transform(glyph->image, &string->transform, &vec);
+ if (error) {
+ RRDPRINTF("couldn't transform glyph id %d\n", letter)
+ continue;
+ }
+
+ /* convert to a bitmap - destroy native image */
+ error =
+ FT_Glyph_To_Bitmap(&glyph->image,
+ size >
+ canvas->font_aa_threshold ? canvas->aa_type ==
+ AA_NORMAL ? FT_RENDER_MODE_NORMAL : canvas->
+ aa_type ==
+ AA_LIGHT ? FT_RENDER_MODE_LIGHT :
+ FT_RENDER_MODE_MONO : FT_RENDER_MODE_MONO, 0,
+ 1);
+ if (error) {
+ RRDPRINTF("couldn't convert glyph id %d to bitmap\n", letter)
+ continue;
+ }
+
+ /* increment number of glyphs */
+ previous = glyph->index;
+ string->num_glyphs++;
+ }
+ free(cstr);
+/* printf ("number of glyphs = %d\n", string->num_glyphs);*/
+ compute_string_bbox(string);
+ /* the last character was a tab */
+ /* if (gottab) { */
+ string->width = ft_pen.x;
+ /* } else {
+ string->width = string->bbox.xMax - string->bbox.xMin;
+ } */
+ string->height = string->bbox.yMax - string->bbox.yMin;
+ return string;
}
-static int gfx_save_png (art_u8 *buffer, FILE *fp,
- long width, long height, long bytes_per_pixel);
+static int gfx_save_png(
+ art_u8 * buffer,
+ FILE * fp,
+ long width,
+ long height,
+ long bytes_per_pixel);
+
/* render grafics into png image */
-int gfx_render_png (gfx_canvas_t *canvas,
- art_u32 width, art_u32 height,
- gfx_color_t background, FILE *fp){
-
-
- FT_Library library;
- gfx_node_t *node = canvas->firstnode;
- art_u8 red = background >> 24, green = (background >> 16) & 0xff;
- art_u8 blue = (background >> 8) & 0xff, alpha = ( background & 0xff );
+int gfx_render_png(
+ gfx_canvas_t *canvas,
+ art_u32 width,
+ art_u32 height,
+ gfx_color_t background,
+ FILE * fp)
+{
+
+
+ FT_Library library;
+ gfx_node_t *node = canvas->firstnode;
+
+ /*
+ art_u8 red = background >> 24, green = (background >> 16) & 0xff;
+ art_u8 blue = (background >> 8) & 0xff, alpha = ( background & 0xff );
+ */
unsigned long pys_width = width * canvas->zoom;
unsigned long pys_height = height * canvas->zoom;
- const int bytes_per_pixel = 3;
- unsigned long rowstride = pys_width*bytes_per_pixel; /* bytes per pixel */
- art_u8 *buffer = art_new (art_u8, rowstride*pys_height);
- art_rgb_run_alpha (buffer, red, green, blue, alpha, pys_width*pys_height);
- FT_Init_FreeType( &library );
- while(node){
+ const int bytes_per_pixel = 4;
+ unsigned long rowstride = pys_width * bytes_per_pixel; /* bytes per pixel */
+
+ /* fill that buffer with out background color */
+ gfx_color_t *buffp = art_new(gfx_color_t, pys_width * pys_height);
+ art_u8 *buffer = (art_u8 *) buffp;
+ unsigned long i;
+
+ for (i = 0; i < pys_width * pys_height; i++) {
+ *(buffp++) = background;
+ }
+ FT_Init_FreeType(&library);
+ while (node) {
switch (node->type) {
case GFX_LINE:
- case GFX_AREA: {
+ case GFX_AREA:{
ArtVpath *vec;
- double dst[6];
- ArtSVP *svp;
- art_affine_scale(dst,canvas->zoom,canvas->zoom);
- vec = art_vpath_affine_transform(node->path,dst);
- if (node->closed_path)
- gfx_libart_close_path(canvas, node, &vec);
- gfx_round_scaled_coordinates(canvas, node, vec);
- if(node->type == GFX_LINE){
- svp = art_svp_vpath_stroke ( vec, ART_PATH_STROKE_JOIN_ROUND,
- ART_PATH_STROKE_CAP_ROUND,
- node->size*canvas->zoom,1,1);
+ double dst[6];
+ ArtSVP *svp;
+
+ art_affine_scale(dst, canvas->zoom, canvas->zoom);
+ vec = art_vpath_affine_transform(node->path, dst);
+ if (node->closed_path)
+ gfx_libart_close_path(node, &vec);
+ /* gfx_round_scaled_coordinates(vec); */
+ /* pvec = art_vpath_perturb(vec);
+ art_free(vec); */
+ if (node->type == GFX_LINE) {
+ svp = art_svp_vpath_stroke(vec, ART_PATH_STROKE_JOIN_ROUND,
+ ART_PATH_STROKE_CAP_ROUND,
+ node->size * canvas->zoom, 4,
+ 0.25);
} else {
- svp = art_svp_from_vpath ( vec );
+ svp = art_svp_from_vpath(vec);
+ /* this takes time and is unnecessary since we make
+ sure elsewhere that the areas are going clock-whise */
+ /* svpt = art_svp_uncross( svp );
+ art_svp_free(svp);
+ svp = art_svp_rewind_uncrossed(svpt,ART_WIND_RULE_NONZERO);
+ art_svp_free(svpt);
+ */
}
art_free(vec);
- art_rgb_svp_alpha (svp ,0,0, pys_width, pys_height,
- node->color, buffer, rowstride, NULL);
- art_free(svp);
+ /* this is from gnome since libart does not have this yet */
+ gnome_print_art_rgba_svp_alpha(svp, 0, 0, pys_width, pys_height,
+ node->color, buffer, rowstride,
+ NULL);
+ art_svp_free(svp);
break;
}
- case GFX_TEXT: {
- unsigned int n;
- int error;
- art_u8 fcolor[3],falpha;
- FT_Face face;
- gfx_char glyph;
- gfx_string string;
- FT_Vector vec; /* 26.6 */
-
- float pen_x = 0.0 , pen_y = 0.0;
+ case GFX_TEXT:{
+ unsigned int n;
+ int error;
+ art_u8 fcolor[4], falpha;
+ FT_Face face;
+ gfx_char glyph;
+ gfx_string string;
+ FT_Vector vec; /* 26.6 */
+
+ float pen_x = 0.0, pen_y = 0.0;
+
/* double x,y; */
- long ix,iy,iz;
-
+ long ix, iy;
+
fcolor[0] = node->color >> 24;
fcolor[1] = (node->color >> 16) & 0xff;
fcolor[2] = (node->color >> 8) & 0xff;
falpha = node->color & 0xff;
- error = FT_New_Face( library,
- (char *)node->filename,
- 0,
- &face );
- if ( error ) break;
-
- error = FT_Set_Char_Size(face, /* handle to face object */
- (long)(node->size*64),
- (long)(node->size*64),
- (long)(100*canvas->zoom),
- (long)(100*canvas->zoom));
- if ( error ) break;
+ error = FT_New_Face(library, (char *) node->filename, 0, &face);
+ if (error) {
+ rrd_set_error("failed to load %s", node->filename);
+
+ break;
+ }
+ error = FT_Set_Char_Size(face, /* handle to face object */
+ (long) (node->size * 64),
+ (long) (node->size * 64),
+ (long) (100 * canvas->zoom),
+ (long) (100 * canvas->zoom));
+ if (error) {
+ FT_Done_Face(face);
+ break;
+ }
pen_x = node->x * canvas->zoom;
pen_y = node->y * canvas->zoom;
- string = gfx_string_create (face, node->text, node->angle);
- switch(node->halign){
- case GFX_H_RIGHT: vec.x = -string->bbox.xMax;
- break;
- case GFX_H_CENTER: vec.x = abs(string->bbox.xMax) >= abs(string->bbox.xMin) ?
- -string->bbox.xMax/2:-string->bbox.xMin/2;
- break;
- case GFX_H_LEFT: vec.x = -string->bbox.xMin;
- break;
- case GFX_H_NULL: vec.x = 0;
- break;
+ string =
+ gfx_string_create(canvas, face, node->text, node->angle,
+ node->tabwidth, node->size);
+ FT_Done_Face(face);
+
+ switch (node->halign) {
+ case GFX_H_RIGHT:
+ vec.x = -string->bbox.xMax;
+ break;
+ case GFX_H_CENTER:
+ vec.x = abs(string->bbox.xMax) >= abs(string->bbox.xMin) ?
+ -string->bbox.xMax / 2 : -string->bbox.xMin / 2;
+ break;
+ case GFX_H_LEFT:
+ vec.x = -string->bbox.xMin;
+ break;
+ case GFX_H_NULL:
+ vec.x = 0;
+ break;
}
- switch(node->valign){
- case GFX_V_TOP: vec.y = string->bbox.yMax;
- break;
- case GFX_V_CENTER: vec.y = abs(string->bbox.yMax) >= abs(string->bbox.yMin) ?
- string->bbox.yMax/2:string->bbox.yMin/2;
- break;
- case GFX_V_BOTTOM: vec.y = 0;
- break;
- case GFX_V_NULL: vec.y = 0;
- break;
+ switch (node->valign) {
+ case GFX_V_TOP:
+ vec.y = string->bbox.yMax;
+ break;
+ case GFX_V_CENTER:
+ vec.y = abs(string->bbox.yMax) >= abs(string->bbox.yMin) ?
+ string->bbox.yMax / 2 : string->bbox.yMin / 2;
+ break;
+ case GFX_V_BOTTOM:
+ vec.y = 0;
+ break;
+ case GFX_V_NULL:
+ vec.y = 0;
+ break;
}
- pen_x += vec.x/64;
- pen_y += vec.y/64;
+ pen_x += vec.x / 64;
+ pen_y += vec.y / 64;
glyph = string->glyphs;
- for(n=0; n<string->num_glyphs; ++n, ++glyph) {
- int gr;
- FT_Glyph image;
- FT_BitmapGlyph bit;
-
- /* make copy to transform */
- if (! glyph->image) {
- fprintf (stderr, "no image\n");
- continue;
+ for (n = 0; n < string->num_glyphs; n++, glyph++) {
+ int gr;
+ FT_Glyph image;
+ FT_BitmapGlyph bit;
+
+ /* long buf_x,comp_n; */
+ /* make copy to transform */
+ if (!glyph->image) {
+ RRDPRINTF("no image\n")
+ continue;
}
- error = FT_Glyph_Copy (glyph->image, &image);
+ error = FT_Glyph_Copy(glyph->image, &image);
if (error) {
- fprintf (stderr, "couldn't copy image\n");
- continue;
+ RRDPRINTF("couldn't copy image\n")
+ continue;
}
/* transform it */
vec = glyph->pos;
- FT_Vector_Transform (&vec, &string->transform);
+ FT_Vector_Transform(&vec, &string->transform);
bit = (FT_BitmapGlyph) image;
+ gr = bit->bitmap.num_grays - 1;
+/*
+ buf_x = (pen_x + 0.5) + (double)bit->left;
+ comp_n = buf_x + bit->bitmap.width > pys_width ? pys_width - buf_x : bit->bitmap.width;
+ if (buf_x < 0 || buf_x >= (long)pys_width) continue;
+ buf_x *= bytes_per_pixel ;
+ for (iy=0; iy < bit->bitmap.rows; iy++){
+ long buf_y = iy+(pen_y+0.5)-(double)bit->top;
+ if (buf_y < 0 || buf_y >= (long)pys_height) continue;
+ buf_y *= rowstride;
+ for (ix=0;ix < bit->bitmap.width;ix++){
+ *(letter + (ix*bytes_per_pixel+3)) = *(bit->bitmap.buffer + iy * bit->bitmap.width + ix);
+ }
+ art_rgba_rgba_composite(buffer + buf_y + buf_x ,letter,comp_n);
+ }
+ art_free(letter);
+*/
+ switch (bit->bitmap.pixel_mode) {
+ case FT_PIXEL_MODE_GRAY:
+ for (iy = 0; iy < bit->bitmap.rows; iy++) {
+ long buf_y = iy + (pen_y + 0.5) - bit->top;
+
+ if (buf_y < 0 || buf_y >= (long) pys_height)
+ continue;
+ buf_y *= rowstride;
+ for (ix = 0; ix < bit->bitmap.width; ix++) {
+ long buf_x =
+ ix + (pen_x + 0.5) + (double) bit->left;
+ art_u8 font_alpha;
+
+ if (buf_x < 0 || buf_x >= (long) pys_width)
+ continue;
+ buf_x *= bytes_per_pixel;
+ font_alpha =
+ *(bit->bitmap.buffer +
+ iy * bit->bitmap.pitch + ix);
+ if (font_alpha > 0) {
+ fcolor[3] =
+ (art_u8) ((double) font_alpha / gr *
+ falpha);
+ art_rgba_rgba_composite(buffer + buf_y +
+ buf_x, fcolor, 1);
+ }
+ }
+ }
+ break;
+
+ case FT_PIXEL_MODE_MONO:
+ for (iy = 0; iy < bit->bitmap.rows; iy++) {
+ long buf_y = iy + (pen_y + 0.5) - bit->top;
+
+ if (buf_y < 0 || buf_y >= (long) pys_height)
+ continue;
+ buf_y *= rowstride;
+ for (ix = 0; ix < bit->bitmap.width; ix++) {
+ long buf_x =
+ ix + (pen_x + 0.5) + (double) bit->left;
+
+ if (buf_x < 0 || buf_x >= (long) pys_width)
+ continue;
+ buf_x *= bytes_per_pixel;
+ if ((fcolor[3] =
+ falpha *
+ ((*
+ (bit->bitmap.buffer +
+ iy * bit->bitmap.pitch + ix / 8) >> (7 -
+ (ix %
+ 8)))
+ & 1)) > 0)
+ art_rgba_rgba_composite(buffer + buf_y +
+ buf_x, fcolor, 1);
+ }
+ }
+ break;
+
+ default:
+ rrd_set_error("unknown freetype pixel mode: %d",
+ bit->bitmap.pixel_mode);
+ break;
+ }
- gr = bit->bitmap.num_grays -1;
- for (iy=0; iy < bit->bitmap.rows; iy++){
+/*
+ for (iy=0; iy < bit->bitmap.rows; iy++){
long buf_y = iy+(pen_y+0.5)-bit->top;
- if (buf_y < 0 || buf_y >= pys_height) continue;
+ if (buf_y < 0 || buf_y >= (long)pys_height) continue;
buf_y *= rowstride;
for (ix=0;ix < bit->bitmap.width;ix++){
long buf_x = ix + (pen_x + 0.5) + (double)bit->left ;
art_u8 font_alpha;
- if (buf_x < 0 || buf_x >= pys_width) continue;
+ if (buf_x < 0 || buf_x >= (long)pys_width) continue;
buf_x *= bytes_per_pixel ;
font_alpha = *(bit->bitmap.buffer + iy * bit->bitmap.width + ix);
font_alpha = (art_u8)((double)font_alpha / gr * falpha);
}
}
}
- FT_Done_Glyph (image);
+*/
+ FT_Done_Glyph(image);
}
gfx_string_destroy(string);
}
}
node = node->next;
- }
- gfx_save_png(buffer,fp , pys_width,pys_height,bytes_per_pixel);
+ }
+ gfx_save_png(buffer, fp, pys_width, pys_height, bytes_per_pixel);
art_free(buffer);
- FT_Done_FreeType( library );
- return 0;
+ FT_Done_FreeType(library);
+ return 0;
}
/* free memory used by nodes this will also remove memory required for
associated paths and svcs ... but not for text strings */
-int
-gfx_destroy (gfx_canvas_t *canvas){
- gfx_node_t *next,*node = canvas->firstnode;
- while(node){
- next = node->next;
- art_free(node->path);
- art_free(node->svp);
- free(node->text);
- free(node->filename);
- art_free(node);
- node = next;
- }
- return 0;
-}
-
-static int gfx_save_png (art_u8 *buffer, FILE *fp, long width, long height, long bytes_per_pixel){
- png_structp png_ptr = NULL;
- png_infop info_ptr = NULL;
- int i;
- png_bytep *row_pointers;
- int rowstride = width * bytes_per_pixel;
- png_text text[2];
-
- if (fp == NULL)
- return (1);
-
- png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,NULL,NULL,NULL);
- if (png_ptr == NULL)
- {
- return (1);
- }
- row_pointers = (png_bytepp)png_malloc(png_ptr,
- height*sizeof(png_bytep));
-
- info_ptr = png_create_info_struct(png_ptr);
-
- if (info_ptr == NULL)
- {
- png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
- return (1);
- }
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- /* If we get here, we had a problem writing the file */
- png_destroy_write_struct(&png_ptr, &info_ptr);
- return (1);
- }
-
- png_init_io(png_ptr, fp);
- png_set_IHDR (png_ptr, info_ptr,width, height,
- 8, PNG_COLOR_TYPE_RGB,
- PNG_INTERLACE_NONE,
- PNG_COMPRESSION_TYPE_DEFAULT,
- PNG_FILTER_TYPE_DEFAULT);
-
- text[0].key = "Software";
- text[0].text = "RRDtool, Tobias Oetiker <tobi@oetike.ch>, http://tobi.oetiker.ch";
- text[0].compression = PNG_TEXT_COMPRESSION_NONE;
- png_set_text (png_ptr, info_ptr, text, 1);
-
- /* Write header data */
- png_write_info (png_ptr, info_ptr);
-
- for (i = 0; i < height; i++)
- row_pointers[i] = (png_bytep) (buffer + i*rowstride);
-
- png_write_image(png_ptr, row_pointers);
- png_write_end(png_ptr, info_ptr);
- png_destroy_write_struct(&png_ptr, &info_ptr);
- return 1;
-}
-
-
+int gfx_destroy(
+ gfx_canvas_t *canvas)
+{
+ gfx_node_t *next, *node = canvas->firstnode;
+
+ while (node) {
+ next = node->next;
+ art_free(node->path);
+ free(node->text);
+ free(node->filename);
+ art_free(node);
+ node = next;
+ }
+ art_free(canvas);
+ return 0;
+}
+
+static int gfx_save_png(
+ art_u8 * buffer,
+ FILE * fp,
+ long width,
+ long height,
+ long bytes_per_pixel)
+{
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL;
+ int i;
+ png_bytep *row_pointers;
+ int rowstride = width * bytes_per_pixel;
+ png_text text[2];
+
+ if (fp == NULL)
+ return (1);
+
+ png_ptr =
+ png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (png_ptr == NULL) {
+ return (1);
+ }
+ row_pointers = (png_bytepp) png_malloc(png_ptr,
+ height * sizeof(png_bytep));
+
+ info_ptr = png_create_info_struct(png_ptr);
+
+ if (info_ptr == NULL) {
+ png_free(png_ptr, row_pointers);
+ png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
+ return (1);
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ /* If we get here, we had a problem writing the file */
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ return (1);
+ }
+
+ png_init_io(png_ptr, fp);
+ png_set_IHDR(png_ptr, info_ptr, width, height,
+ 8, PNG_COLOR_TYPE_RGB_ALPHA,
+ PNG_INTERLACE_NONE,
+ PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
+ text[0].key = "Software";
+ text[0].text =
+ "RRDtool, Tobias Oetiker <tobi@oetike.ch>, http://tobi.oetiker.ch";
+ text[0].compression = PNG_TEXT_COMPRESSION_NONE;
+ png_set_text(png_ptr, info_ptr, text, 1);
+
+ /* lets make this fast while ending up with some increass in image size */
+ png_set_filter(png_ptr, 0, PNG_FILTER_NONE);
+ /* png_set_filter(png_ptr,0,PNG_FILTER_SUB); */
+ png_set_compression_level(png_ptr, 1);
+ /* png_set_compression_strategy(png_ptr,Z_HUFFMAN_ONLY); */
+ /*
+ png_set_filter(png_ptr,PNG_FILTER_TYPE_BASE,PNG_FILTER_SUB);
+ png_set_compression_strategy(png_ptr,Z_HUFFMAN_ONLY);
+ png_set_compression_level(png_ptr,Z_BEST_SPEED); */
+
+ /* Write header data */
+ png_write_info(png_ptr, info_ptr);
+ for (i = 0; i < height; i++)
+ row_pointers[i] = (png_bytep) (buffer + i * rowstride);
+
+ png_write_image(png_ptr, row_pointers);
+ png_write_end(png_ptr, info_ptr);
+ png_free(png_ptr, row_pointers);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ return 1;
+}
+
+
+/* ----- COMMON ROUTINES for pdf, svg and eps */
+#define min3(a, b, c) (a < b ? (a < c ? a : c) : (b < c ? b : c))
+#define max3(a, b, c) (a > b ? (a > c ? a : c) : (b > c ? b : c))
+
+#define PDF_CALC_DEBUG 0
+
+typedef struct pdf_point {
+ double x, y;
+} pdf_point;
+
+typedef struct {
+ double ascender, descender, baselineY;
+ pdf_point sizep, minp, maxp;
+ double x, y, tdx, tdy;
+ double r, cos_r, sin_r;
+ double ma, mb, mc, md, mx, my; /* pdf coord matrix */
+ double tmx, tmy; /* last 2 coords of text coord matrix */
+#if PDF_CALC_DEBUG
+ int debug;
+#endif
+} pdf_coords;
+
+#if PDF_CALC_DEBUG
+static void pdf_dump_calc(
+ gfx_node_t *node,
+ pdf_coords * g)
+{
+ fprintf(stderr, "PDF CALC =============================\n");
+ fprintf(stderr, " '%s' at %f pt\n", node->text, node->size);
+ fprintf(stderr, " align h = %s, v = %s, sizep = %f, %f\n",
+ (node->halign == GFX_H_RIGHT ? "r" :
+ (node->halign == GFX_H_CENTER ? "c" :
+ (node->halign == GFX_H_LEFT ? "l" : "N"))),
+ (node->valign == GFX_V_TOP ? "t" :
+ (node->valign == GFX_V_CENTER ? "c" :
+ (node->valign == GFX_V_BOTTOM ? "b" : "N"))),
+ g->sizep.x, g->sizep.y);
+ fprintf(stderr, " r = %f = %f, cos = %f, sin = %f\n",
+ g->r, node->angle, g->cos_r, g->sin_r);
+ fprintf(stderr, " ascender = %f, descender = %f, baselineY = %f\n",
+ g->ascender, g->descender, g->baselineY);
+ fprintf(stderr, " sizep: %f, %f\n", g->sizep.x, g->sizep.y);
+ fprintf(stderr, " minp: %f, %f maxp = %f, %f\n",
+ g->minp.x, g->minp.y, g->maxp.x, g->maxp.y);
+ fprintf(stderr, " x = %f, y = %f\n", g->x, g->y);
+ fprintf(stderr, " tdx = %f, tdy = %f\n", g->tdx, g->tdy);
+ fprintf(stderr, " GM = %f, %f, %f, %f, %f, %f\n",
+ g->ma, g->mb, g->mc, g->md, g->mx, g->my);
+ fprintf(stderr, " TM = %f, %f, %f, %f, %f, %f\n",
+ g->ma, g->mb, g->mc, g->md, g->tmx, g->tmy);
+}
+#endif
+
+#if PDF_CALC_DEBUG
+#define PDF_DD(x) if (g->debug) x;
+#else
+#define PDF_DD(x)
+#endif
+
+static void pdf_rotate(
+ pdf_coords * g,
+ pdf_point *p)
+{
+ double x2 = g->cos_r * p->x - g->sin_r * p->y;
+ double y2 = g->sin_r * p->x + g->cos_r * p->y;
+
+ PDF_DD(fprintf
+ (stderr, " rotate(%f, %f) -> %f, %f\n", p->x, p->y, x2, y2))
+ p->x = x2;
+ p->y = y2;
+}
+
+
+static void pdf_calc(
+ int page_height,
+ gfx_node_t *node,
+ pdf_coords * g)
+{
+ pdf_point a, b, c;
+
+#if PDF_CALC_DEBUG
+ /* g->debug = !!strstr(node->text, "RevProxy-1") || !!strstr(node->text, "08:00"); */
+ g->debug = !!strstr(node->text, "sekunder")
+ || !!strstr(node->text, "Web");
+#endif
+ g->x = node->x;
+ g->y = page_height - node->y;
+ if (node->angle) {
+ g->r = 2 * M_PI * node->angle / 360.0;
+ g->cos_r = cos(g->r);
+ g->sin_r = sin(g->r);
+ } else {
+ g->r = 0;
+ g->cos_r = 1;
+ g->sin_r = 0;
+ }
+ g->ascender = afm_get_ascender(node->filename, node->size);
+ g->descender = afm_get_descender(node->filename, node->size);
+ g->sizep.x =
+ afm_get_text_width(0, node->filename, node->size, node->tabwidth,
+ node->text);
+ /* seems like libart ignores the descender when doing vertial-align = bottom,
+ so we do that too, to get labels v-aligning properly */
+ g->sizep.y = -g->ascender; /* + afm_get_descender(font->ps_font, node->size); */
+ g->baselineY = -g->ascender - g->sizep.y / 2;
+ a.x = g->sizep.x;
+ a.y = g->sizep.y;
+ b.x = g->sizep.x;
+ b.y = 0;
+ c.x = 0;
+ c.y = g->sizep.y;
+ if (node->angle) {
+ pdf_rotate(g, &a);
+ pdf_rotate(g, &b);
+ pdf_rotate(g, &c);
+ }
+ g->minp.x = min3(a.x, b.x, c.x);
+ g->minp.y = min3(a.y, b.y, c.y);
+ g->maxp.x = max3(a.x, b.x, c.x);
+ g->maxp.y = max3(a.y, b.y, c.y);
+ /* The alignment parameters in node->valign and node->halign
+ specifies the alignment in the non-rotated coordinate system
+ (very unlike pdf/postscript), which complicates matters.
+ */
+ switch (node->halign) {
+ case GFX_H_RIGHT:
+ g->tdx = -g->maxp.x;
+ break;
+ case GFX_H_CENTER:
+ g->tdx = -(g->maxp.x + g->minp.x) / 2;
+ break;
+ case GFX_H_LEFT:
+ g->tdx = -g->minp.x;
+ break;
+ case GFX_H_NULL:
+ g->tdx = 0;
+ break;
+ }
+ switch (node->valign) {
+ case GFX_V_TOP:
+ g->tdy = -g->maxp.y;
+ break;
+ case GFX_V_CENTER:
+ g->tdy = -(g->maxp.y + g->minp.y) / 2;
+ break;
+ case GFX_V_BOTTOM:
+ g->tdy = -g->minp.y;
+ break;
+ case GFX_V_NULL:
+ g->tdy = 0;
+ break;
+ }
+ g->ma = g->cos_r;
+ g->mb = g->sin_r;
+ g->mc = -g->sin_r;
+ g->md = g->cos_r;
+ g->mx = g->x + g->tdx;
+ g->my = g->y + g->tdy;
+ g->tmx = g->mx - g->ascender * g->mc;
+ g->tmy = g->my - g->ascender * g->md;
+ PDF_DD(pdf_dump_calc(node, g))
+}
+
/* ------- SVG -------
SVG reference:
http://www.w3.org/TR/SVG/
*/
static int svg_indent = 0;
static int svg_single_line = 0;
-static const char *svg_default_font = "Helvetica";
-typedef struct svg_dash
-{
- int dash_enable;
- double dash_adjust, dash_len, dash_offset;
- double adjusted_on, adjusted_off;
+static const char *svg_default_font = "-dummy-";
+typedef struct svg_dash {
+ int dash_enable;
+ double dash_adjust, dash_len, dash_offset;
+ double adjusted_on, adjusted_off;
} svg_dash;
-static void svg_print_indent(FILE *fp)
-{
- int i;
- for (i = svg_indent - svg_single_line; i > 0; i--) {
- putc(' ', fp);
- putc(' ', fp);
- }
-}
-
-static void svg_start_tag(FILE *fp, const char *name)
-{
- svg_print_indent(fp);
- putc('<', fp);
- fputs(name, fp);
- svg_indent++;
-}
-
-static void svg_close_tag_single_line(FILE *fp)
-{
- svg_single_line++;
- putc('>', fp);
-}
-
-static void svg_close_tag(FILE *fp)
-{
- putc('>', fp);
- if (!svg_single_line)
- putc('\n', fp);
-}
-
-static void svg_end_tag(FILE *fp, const char *name)
-{
- /* name is NULL if closing empty-node tag */
- svg_indent--;
- if (svg_single_line)
- svg_single_line--;
- else if (name)
- svg_print_indent(fp);
- if (name != NULL) {
- fputs("</", fp);
- fputs(name, fp);
- } else {
- putc('/', fp);
- }
- svg_close_tag(fp);
-}
-
-static void svg_close_tag_empty_node(FILE *fp)
-{
- svg_end_tag(fp, NULL);
-}
-
-static void svg_write_text(FILE *fp, const char *text)
-{
- const unsigned char *p, *start, *last;
- unsigned int ch;
- p = (const unsigned char*)text;
- if (!p)
- return;
- /* trim leading spaces */
- while (*p == ' ')
- p++;
- start = p;
- /* trim trailing spaces */
- last = p - 1;
- while ((ch = *p) != 0) {
- if (ch != ' ')
- last = p;
- p++;
- }
- /* encode trimmed text */
- p = start;
- while (p <= last) {
- ch = *p++;
- ch = afm_host2unicode(ch); /* unsafe macro */
- switch (ch) {
- case '&': fputs("&", fp); break;
- case '<': fputs("<", fp); break;
- case '>': fputs(">", fp); break;
- case '"': fputs(""", fp); break;
- default:
- if (ch >= 127)
- fprintf(fp, "&#%d;", ch);
- else
- putc(ch, fp);
- }
- }
-}
-
-static void svg_format_number(char *buf, int bufsize, double d)
-{
- /* omit decimals if integer to reduce filesize */
- char *p;
- snprintf(buf, bufsize, "%.2f", d);
- p = buf; /* doesn't trust snprintf return value */
- while (*p)
- p++;
- while (--p > buf) {
- char ch = *p;
- if (ch == '0') {
- *p = '\0'; /* zap trailing zeros */
- continue;
- }
- if (ch == '.')
- *p = '\0'; /* zap trailing dot */
- break;
- }
-}
-
-static void svg_write_number(FILE *fp, double d)
-{
- char buf[60];
- svg_format_number(buf, sizeof(buf), d);
- fputs(buf, fp);
-}
-
-static int svg_color_is_black(int c)
-{
- /* gfx_color_t is RRGGBBAA */
- return c == 0x000000FF;
-}
-
-static void svg_write_color(FILE *fp, gfx_color_t c, const char *attr)
-{
- /* gfx_color_t is RRGGBBAA, svg can use #RRGGBB and #RGB like html */
- gfx_color_t rrggbb = (int)((c >> 8) & 0xFFFFFF);
- gfx_color_t opacity = c & 0xFF;
- fprintf(fp, " %s=\"", attr);
- if ((rrggbb & 0x0F0F0F) == ((rrggbb >> 4) & 0x0F0F0F)) {
- /* css2 short form, #rgb is #rrggbb, not #r0g0b0 */
- fprintf(fp, "#%03lX",
- ( ((rrggbb >> 8) & 0xF00)
- | ((rrggbb >> 4) & 0x0F0)
- | ( rrggbb & 0x00F)));
- } else {
- fprintf(fp, "#%06lX", rrggbb);
- }
- fputs("\"", fp);
- if (opacity != 0xFF) {
- fprintf(fp, " stroke-opacity=\"");
- svg_write_number(fp, opacity / 255.0);
+static void svg_print_indent(
+ FILE * fp)
+{
+ int i;
+
+ for (i = svg_indent - svg_single_line; i > 0; i--) {
+ putc(' ', fp);
+ putc(' ', fp);
+ }
+}
+
+static void svg_start_tag(
+ FILE * fp,
+ const char *name)
+{
+ svg_print_indent(fp);
+ putc('<', fp);
+ fputs(name, fp);
+ svg_indent++;
+}
+
+static void svg_close_tag_single_line(
+ FILE * fp)
+{
+ svg_single_line++;
+ putc('>', fp);
+}
+
+static void svg_close_tag(
+ FILE * fp)
+{
+ putc('>', fp);
+ if (!svg_single_line)
+ putc('\n', fp);
+}
+
+static void svg_end_tag(
+ FILE * fp,
+ const char *name)
+{
+ /* name is NULL if closing empty-node tag */
+ svg_indent--;
+ if (svg_single_line)
+ svg_single_line--;
+ else if (name)
+ svg_print_indent(fp);
+ if (name != NULL) {
+ fputs("</", fp);
+ fputs(name, fp);
+ } else {
+ putc('/', fp);
+ }
+ svg_close_tag(fp);
+}
+
+static void svg_close_tag_empty_node(
+ FILE * fp)
+{
+ svg_end_tag(fp, NULL);
+}
+
+static void svg_write_text(
+ FILE * fp,
+ const char *text)
+{
+#ifdef HAVE_MBSTOWCS
+ size_t clen;
+ wchar_t *p, *cstr, ch;
+ int text_count;
+
+ if (!text)
+ return;
+ clen = strlen(text) + 1;
+ cstr = malloc(sizeof(wchar_t) * clen);
+ text_count = mbstowcs(cstr, text, clen);
+ if (text_count == -1)
+ text_count = mbstowcs(cstr, "Enc-Err", 6);
+ p = cstr;
+#else
+ unsigned char *p = text;
+ unsigned char *cstr;
+ char ch;
+
+ if (!p)
+ return;
+#endif
+ while (1) {
+ ch = *p++;
+ ch = afm_fix_osx_charset(ch); /* unsafe macro */
+ switch (ch) {
+ case 0:
+#ifdef HAVE_MBSTOWCS
+ free(cstr);
+#endif
+ return;
+ case '&':
+ fputs("&", fp);
+ break;
+ case '<':
+ fputs("<", fp);
+ break;
+ case '>':
+ fputs(">", fp);
+ break;
+ case '"':
+ fputs(""", fp);
+ break;
+ default:
+ if (ch == 32) {
+#ifdef HAVE_MBSTOWCS
+ if (p <= cstr + 1 || !*p || *p == 32)
+ fputs(" ", fp); /* non-breaking space in unicode */
+ else
+#endif
+ fputc(32, fp);
+ } else if (ch < 32 || ch >= 127)
+ fprintf(fp, "&#%d;", (int) ch);
+ else
+ putc((char) ch, fp);
+ }
+ }
+}
+
+static void svg_format_number(
+ char *buf,
+ int bufsize,
+ double d)
+{
+ /* omit decimals if integer to reduce filesize */
+ char *p;
+
+ snprintf(buf, bufsize, "%.2f", d);
+ p = buf; /* doesn't trust snprintf return value */
+ while (*p)
+ p++;
+ while (--p > buf) {
+ char ch = *p;
+
+ if (ch == '0') {
+ *p = '\0'; /* zap trailing zeros */
+ continue;
+ }
+ if (ch == '.')
+ *p = '\0'; /* zap trailing dot */
+ break;
+ }
+}
+
+static void svg_write_number(
+ FILE * fp,
+ double d)
+{
+ char buf[60];
+
+ svg_format_number(buf, sizeof(buf), d);
+ fputs(buf, fp);
+}
+
+static int svg_color_is_black(
+ int c)
+{
+ /* gfx_color_t is RRGGBBAA */
+ return c == 0x000000FF;
+}
+
+static void svg_write_color(
+ FILE * fp,
+ gfx_color_t c,
+ const char *attr)
+{
+ /* gfx_color_t is RRGGBBAA, svg can use #RRGGBB and #RGB like html */
+ gfx_color_t rrggbb = (int) ((c >> 8) & 0xFFFFFF);
+ gfx_color_t opacity = c & 0xFF;
+
+ fprintf(fp, " %s=\"", attr);
+ if ((rrggbb & 0x0F0F0F) == ((rrggbb >> 4) & 0x0F0F0F)) {
+ /* css2 short form, #rgb is #rrggbb, not #r0g0b0 */
+ fprintf(fp, "#%03lX", (((rrggbb >> 8) & 0xF00)
+ | ((rrggbb >> 4) & 0x0F0)
+ | (rrggbb & 0x00F)));
+ } else {
+ fprintf(fp, "#%06lX", rrggbb);
+ }
fputs("\"", fp);
- }
-}
-
-static void svg_get_dash(gfx_node_t *node, svg_dash *d)
-{
- double offset;
- int mult;
- if (node->dash_on <= 0 || node->dash_off <= 0) {
- d->dash_enable = 0;
- return;
- }
- d->dash_enable = 1;
- d->dash_len = node->dash_on + node->dash_off;
- /* dash on/off adjustment due to round caps */
- d->dash_adjust = 0.8 * node->size;
- d->adjusted_on = node->dash_on - d->dash_adjust;
- if (d->adjusted_on < 0.01)
- d->adjusted_on = 0.01;
- d->adjusted_off = d->dash_len - d->adjusted_on;
- /* dash offset calc */
- if (node->path[0].x == node->path[1].x) /* only good for horz/vert lines */
- offset = node->path[0].y;
- else
- offset = node->path[0].x;
- mult = (int)fabs(offset / d->dash_len);
- d->dash_offset = offset - mult * d->dash_len;
- if (node->path[0].x < node->path[1].x || node->path[0].y < node->path[1].y)
- d->dash_offset = d->dash_len - d->dash_offset;
-}
-
-static int svg_dash_equal(svg_dash *a, svg_dash *b)
-{
- if (a->dash_enable != b->dash_enable)
- return 0;
- if (a->adjusted_on != b->adjusted_on)
- return 0;
- if (a->adjusted_off != b->adjusted_off)
+ if (opacity != 0xFF) {
+ fprintf(fp, " opacity=\"");
+ svg_write_number(fp, opacity / 255.0);
+ fputs("\"", fp);
+ }
+}
+
+static void svg_get_dash(
+ gfx_node_t *node,
+ svg_dash *d)
+{
+ double offset;
+ int mult;
+
+ if (node->dash_on <= 0 || node->dash_off <= 0) {
+ d->dash_enable = 0;
+ return;
+ }
+ d->dash_enable = 1;
+ d->dash_len = node->dash_on + node->dash_off;
+ /* dash on/off adjustment due to round caps */
+ d->dash_adjust = 0.8 * node->size;
+ d->adjusted_on = node->dash_on - d->dash_adjust;
+ if (d->adjusted_on < 0.01)
+ d->adjusted_on = 0.01;
+ d->adjusted_off = d->dash_len - d->adjusted_on;
+ /* dash offset calc */
+ if (node->path[0].x == node->path[1].x) /* only good for horz/vert lines */
+ offset = node->path[0].y;
+ else
+ offset = node->path[0].x;
+ mult = (int) fabs(offset / d->dash_len);
+ d->dash_offset = offset - mult * d->dash_len;
+ if (node->path[0].x < node->path[1].x
+ || node->path[0].y < node->path[1].y)
+ d->dash_offset = d->dash_len - d->dash_offset;
+}
+
+static int svg_dash_equal(
+ svg_dash *a,
+ svg_dash *b)
+{
+ if (a->dash_enable != b->dash_enable)
+ return 0;
+ if (a->adjusted_on != b->adjusted_on)
+ return 0;
+ if (a->adjusted_off != b->adjusted_off)
+ return 0;
+ /* rest of properties will be the same when on+off are */
+ return 1;
+}
+
+static void svg_common_path_attributes(
+ FILE * fp,
+ gfx_node_t *node)
+{
+ svg_dash dash_info;
+
+ svg_get_dash(node, &dash_info);
+ fputs(" stroke-width=\"", fp);
+ svg_write_number(fp, node->size);
+ fputs("\"", fp);
+ svg_write_color(fp, node->color, "stroke");
+ fputs(" fill=\"none\"", fp);
+ if (dash_info.dash_enable) {
+ if (dash_info.dash_offset != 0) {
+ fputs(" stroke-dashoffset=\"", fp);
+ svg_write_number(fp, dash_info.dash_offset);
+ fputs("\"", fp);
+ }
+ fputs(" stroke-dasharray=\"", fp);
+ svg_write_number(fp, dash_info.adjusted_on);
+ fputs(",", fp);
+ svg_write_number(fp, dash_info.adjusted_off);
+ fputs("\"", fp);
+ }
+}
+
+static int svg_is_int_step(
+ double a,
+ double b)
+{
+ double diff = fabs(a - b);
+
+ return floor(diff) == diff;
+}
+
+static int svg_path_straight_segment(
+ FILE * fp,
+ double lastA,
+ double currentA,
+ double currentB,
+ gfx_node_t *node,
+ int segment_idx,
+ int isx,
+ char absChar,
+ char relChar)
+{
+ if (!svg_is_int_step(lastA, currentA)) {
+ putc(absChar, fp);
+ svg_write_number(fp, currentA);
+ return 0;
+ }
+ if (segment_idx < node->points - 1) {
+ ArtVpath *vec = node->path + segment_idx + 1;
+
+ if (vec->code == ART_LINETO) {
+ double nextA = (isx ? vec->x : vec->y) - LINEOFFSET;
+ double nextB = (isx ? vec->y : vec->x) - LINEOFFSET;
+
+ if (nextB == currentB
+ && ((currentA >= lastA) == (nextA >= currentA))
+ && svg_is_int_step(currentA, nextA)) {
+ return 1; /* skip to next as it is a straight line */
+ }
+ }
+ }
+ putc(relChar, fp);
+ svg_write_number(fp, currentA - lastA);
return 0;
- /* rest of properties will be the same when on+off are */
- return 1;
-}
-
-static void svg_common_path_attributes(FILE *fp, gfx_node_t *node)
-{
- svg_dash dash_info;
- svg_get_dash(node, &dash_info);
- fputs(" stroke-width=\"", fp);
- svg_write_number(fp, node->size);
- fputs("\"", fp);
- svg_write_color(fp, node->color, "stroke");
- fputs(" fill=\"none\"", fp);
- if (dash_info.dash_enable) {
- if (dash_info.dash_offset != 0) {
- fputs(" stroke-dashoffset=\"", fp);
- svg_write_number(fp, dash_info.dash_offset);
- fputs("\"", fp);
- }
- fputs(" stroke-dasharray=\"", fp);
- svg_write_number(fp, dash_info.adjusted_on);
- fputs(",", fp);
- svg_write_number(fp, dash_info.adjusted_off);
+}
+
+static void svg_path(
+ FILE * fp,
+ gfx_node_t *node,
+ int multi)
+{
+ int i;
+ double lastX = 0, lastY = 0;
+
+ /* for straight lines <path..> tags take less space than
+ <line..> tags because of the efficient packing
+ in the 'd' attribute */
+ svg_start_tag(fp, "path");
+ if (!multi)
+ svg_common_path_attributes(fp, node);
+ fputs(" d=\"", fp);
+ /* specification of the 'd' attribute: */
+ /* http://www.w3.org/TR/SVG/paths.html#PathDataGeneralInformation */
+ for (i = 0; i < node->points; i++) {
+ ArtVpath *vec = node->path + i;
+ double x = vec->x - LINEOFFSET;
+ double y = vec->y - LINEOFFSET;
+
+ switch (vec->code) {
+ case ART_MOVETO_OPEN: /* fall-through */
+ case ART_MOVETO:
+ putc('M', fp);
+ svg_write_number(fp, x);
+ putc(',', fp);
+ svg_write_number(fp, y);
+ break;
+ case ART_LINETO:
+ /* try optimize filesize by using minimal lineto commands */
+ /* without introducing rounding errors. */
+ if (x == lastX) {
+ if (svg_path_straight_segment
+ (fp, lastY, y, x, node, i, 0, 'V', 'v'))
+ continue;
+ } else if (y == lastY) {
+ if (svg_path_straight_segment
+ (fp, lastX, x, y, node, i, 1, 'H', 'h'))
+ continue;
+ } else {
+ putc('L', fp);
+ svg_write_number(fp, x);
+ putc(',', fp);
+ svg_write_number(fp, y);
+ }
+ break;
+ case ART_CURVETO:
+ break; /* unsupported */
+ case ART_END:
+ break; /* nop */
+ }
+ lastX = x;
+ lastY = y;
+ }
+ if (node->closed_path)
+ fputs(" Z", fp);
fputs("\"", fp);
- }
-}
-
-static int svg_is_int_step(double a, double b)
-{
- double diff = fabs(a - b);
- return floor(diff) == diff;
-}
-
-static int svg_path_straight_segment(FILE *fp,
- double lastA, double currentA, double currentB,
- gfx_node_t *node,
- int segment_idx, int isx, char absChar, char relChar)
-{
- if (!svg_is_int_step(lastA, currentA)) {
- putc(absChar, fp);
- svg_write_number(fp, currentA);
- return 0;
- }
- if (segment_idx < node->points - 1) {
- ArtVpath *vec = node->path + segment_idx + 1;
- if (vec->code == ART_LINETO) {
- double nextA = (isx ? vec->x : vec->y) - LINEOFFSET;
- double nextB = (isx ? vec->y : vec->x) - LINEOFFSET;
- if (nextB == currentB
- && ((currentA >= lastA) == (nextA >= currentA))
- && svg_is_int_step(currentA, nextA)) {
- return 1; /* skip to next as it is a straight line */
- }
- }
- }
- putc(relChar, fp);
- svg_write_number(fp, currentA - lastA);
- return 0;
-}
-
-static void svg_path(FILE *fp, gfx_node_t *node, int multi)
-{
- int i;
- double lastX = 0, lastY = 0;
- /* for straight lines <path..> tags take less space than
- <line..> tags because of the efficient packing
- in the 'd' attribute */
- svg_start_tag(fp, "path");
- if (!multi)
+ svg_close_tag_empty_node(fp);
+}
+
+static void svg_multi_path(
+ FILE * fp,
+ gfx_node_t **nodeR)
+{
+ /* optimize for multiple paths with the same color, penwidth, etc. */
+ int num = 1;
+ gfx_node_t *node = *nodeR;
+ gfx_node_t *next = node->next;
+
+ while (next) {
+ if (next->type != node->type
+ || next->size != node->size
+ || next->color != node->color
+ || next->dash_on != node->dash_on
+ || next->dash_off != node->dash_off)
+ break;
+ next = next->next;
+ num++;
+ }
+ if (num == 1) {
+ svg_path(fp, node, 0);
+ return;
+ }
+ svg_start_tag(fp, "g");
svg_common_path_attributes(fp, node);
- fputs(" d=\"", fp);
- /* specification of the 'd' attribute: */
- /* http://www.w3.org/TR/SVG/paths.html#PathDataGeneralInformation */
- for (i = 0; i < node->points; i++) {
- ArtVpath *vec = node->path + i;
- double x = vec->x - LINEOFFSET;
- double y = vec->y - LINEOFFSET;
- switch (vec->code) {
- case ART_MOVETO_OPEN: /* fall-through */
- case ART_MOVETO:
- putc('M', fp);
- svg_write_number(fp, x);
- putc(',', fp);
- svg_write_number(fp, y);
- break;
- case ART_LINETO:
- /* try optimize filesize by using minimal lineto commands */
- /* without introducing rounding errors. */
- if (x == lastX) {
- if (svg_path_straight_segment(fp, lastY, y, x, node, i, 0, 'V', 'v'))
- continue;
- } else if (y == lastY) {
- if (svg_path_straight_segment(fp, lastX, x, y, node, i, 1, 'H', 'h'))
- continue;
- } else {
- putc('L', fp);
- svg_write_number(fp, x);
- putc(',', fp);
- svg_write_number(fp, y);
- }
- break;
- case ART_CURVETO: break; /* unsupported */
- case ART_END: break; /* nop */
- }
- lastX = x;
- lastY = y;
- }
- if (node->closed_path)
- fputs(" Z", fp);
- fputs("\"", fp);
- svg_close_tag_empty_node(fp);
-}
-
-static void svg_multi_path(FILE *fp, gfx_node_t **nodeR)
-{
- /* optimize for multiple paths with the same color, penwidth, etc. */
- int num = 1;
- gfx_node_t *node = *nodeR;
- gfx_node_t *next = node->next;
- while (next) {
- if (next->type != node->type
- || next->size != node->size
- || next->color != node->color
- || next->dash_on != node->dash_on
- || next->dash_off != node->dash_off)
- break;
- next = next->next;
- num++;
- }
- if (num == 1) {
- svg_path(fp, node, 0);
- return;
- }
- svg_start_tag(fp, "g");
- svg_common_path_attributes(fp, node);
- svg_close_tag(fp);
- while (num && node) {
- svg_path(fp, node, 1);
- if (!--num)
- break;
- node = node->next;
- *nodeR = node;
- }
- svg_end_tag(fp, "g");
-}
-
-static void svg_area(FILE *fp, gfx_node_t *node)
-{
- int i;
- double startX = 0, startY = 0;
- svg_start_tag(fp, "polygon");
- fputs(" ", fp);
- svg_write_color(fp, node->color, "fill");
- fputs(" points=\"", fp);
- for (i = 0; i < node->points; i++) {
- ArtVpath *vec = node->path + i;
- double x = vec->x - LINEOFFSET;
- double y = vec->y - LINEOFFSET;
- switch (vec->code) {
- case ART_MOVETO_OPEN: /* fall-through */
- case ART_MOVETO:
- svg_write_number(fp, x);
- putc(',', fp);
- svg_write_number(fp, y);
- startX = x;
- startY = y;
- break;
- case ART_LINETO:
- if (i == node->points - 2
- && node->path[i + 1].code == ART_END
- && fabs(x - startX) < 0.001 && fabs(y - startY) < 0.001) {
- break; /* poly area always closed, no need for last point */
- }
- putc(' ', fp);
- svg_write_number(fp, x);
- putc(',', fp);
- svg_write_number(fp, y);
- break;
- case ART_CURVETO: break; /* unsupported */
- case ART_END: break; /* nop */
- }
- }
- fputs("\"", fp);
- svg_close_tag_empty_node(fp);
-}
-
-static void svg_text(FILE *fp, gfx_node_t *node)
-{
- double x = node->x - LINEOFFSET;
- double y = node->y - LINEOFFSET;
- if (node->angle != 0) {
- svg_start_tag(fp, "g");
- fputs(" transform=\"translate(", fp);
- svg_write_number(fp, x);
- fputs(",", fp);
- svg_write_number(fp, y);
- fputs(") rotate(", fp);
- svg_write_number(fp, node->angle);
- fputs(")\"", fp);
- x = y = 0;
- svg_close_tag(fp);
- }
- switch (node->valign) {
- case GFX_V_TOP: y += node->size; break;
- case GFX_V_CENTER: y += node->size / 3; break;
- case GFX_V_BOTTOM: break;
- case GFX_V_NULL: break;
- }
- svg_start_tag(fp, "text");
- fputs(" x=\"", fp);
- svg_write_number(fp, x);
- fputs("\" y=\"", fp);
- svg_write_number(fp, y);
-
-/* if (strcmp(node->filename, svg_default_font))
- fprintf(fp, " font-family=\"%s\"", node->filename);
- */
- fputs("\" font-family=\"Helvetica", fp);
- fputs("\" font-size=\"", fp);
- svg_write_number(fp, node->size);
- fputs("\"", fp);
- if (!svg_color_is_black(node->color))
+ svg_close_tag(fp);
+ while (num && node) {
+ svg_path(fp, node, 1);
+ if (!--num)
+ break;
+ node = node->next;
+ *nodeR = node;
+ }
+ svg_end_tag(fp, "g");
+}
+
+static void svg_area(
+ FILE * fp,
+ gfx_node_t *node)
+{
+ int i;
+ double startX = 0, startY = 0;
+
+ svg_start_tag(fp, "polygon");
+ fputs(" ", fp);
svg_write_color(fp, node->color, "fill");
- switch (node->halign) {
- case GFX_H_RIGHT: fputs(" text-anchor=\"end\"", fp); break;
- case GFX_H_CENTER: fputs(" text-anchor=\"middle\"", fp); break;
- case GFX_H_LEFT: break;
- case GFX_H_NULL: break;
- }
- svg_close_tag_single_line(fp);
- /* support for node->tabwidth missing */
- svg_write_text(fp, node->text);
- svg_end_tag(fp, "text");
- if (node->angle != 0)
- svg_end_tag(fp, "g");
-}
-
-int gfx_render_svg (gfx_canvas_t *canvas,
- art_u32 width, art_u32 height,
- gfx_color_t background, FILE *fp){
- gfx_node_t *node = canvas->firstnode;
- fputs(
-"<?xml version=\"1.0\" standalone=\"no\"?>\n"
-"<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.0//EN\"\n"
-" \"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n"
-"<!--\n"
-" SVG file created by RRDtool,\n"
-" Tobias Oetiker <tobi@oetike.ch>, http://tobi.oetiker.ch\n"
-"\n"
-" The width/height attributes in the outhermost svg node\n"
-" are just default sizes for the browser which is used\n"
-" if the svg file is openened directly without being\n"
-" embedded in an html file.\n"
-" The viewBox is the local coord system for rrdtool.\n"
-"-->\n", fp);
- svg_start_tag(fp, "svg");
- fputs(" width=\"", fp);
- svg_write_number(fp, width * canvas->zoom);
- fputs("\" height=\"", fp);
- svg_write_number(fp, height * canvas->zoom);
- fputs("\" x=\"0\" y=\"0\" viewBox=\"", fp);
- svg_write_number(fp, -LINEOFFSET);
- fputs(" ", fp);
- svg_write_number(fp, -LINEOFFSET);
- fputs(" ", fp);
- svg_write_number(fp, width - LINEOFFSET);
- fputs(" ", fp);
- svg_write_number(fp, height - LINEOFFSET);
- fputs("\" preserveAspectRatio=\"xMidYMid\"", fp);
- fprintf(fp, " font-family=\"%s\"", svg_default_font); /* default font */
- fputs(" stroke-linecap=\"round\" stroke-linejoin=\"round\"", fp);
- svg_close_tag(fp);
- svg_start_tag(fp, "rect");
- fprintf(fp, " x=\"0\" y=\"0\" width=\"%d\" height=\"%d\"", width, height);
- svg_write_color(fp, background, "fill");
- svg_close_tag_empty_node(fp);
- while (node) {
- switch (node->type) {
- case GFX_LINE:
- svg_multi_path(fp, &node);
- break;
- case GFX_AREA:
- svg_area(fp, node);
- break;
- case GFX_TEXT:
- svg_text(fp, node);
- }
- node = node->next;
- }
- svg_end_tag(fp, "svg");
- return 0;
+ fputs(" points=\"", fp);
+ for (i = 0; i < node->points; i++) {
+ ArtVpath *vec = node->path + i;
+ double x = vec->x - LINEOFFSET;
+ double y = vec->y - LINEOFFSET;
+
+ switch (vec->code) {
+ case ART_MOVETO_OPEN: /* fall-through */
+ case ART_MOVETO:
+ svg_write_number(fp, x);
+ putc(',', fp);
+ svg_write_number(fp, y);
+ startX = x;
+ startY = y;
+ break;
+ case ART_LINETO:
+ if (i == node->points - 2
+ && node->path[i + 1].code == ART_END
+ && fabs(x - startX) < 0.001 && fabs(y - startY) < 0.001) {
+ break; /* poly area always closed, no need for last point */
+ }
+ putc(' ', fp);
+ svg_write_number(fp, x);
+ putc(',', fp);
+ svg_write_number(fp, y);
+ break;
+ case ART_CURVETO:
+ break; /* unsupported */
+ case ART_END:
+ break; /* nop */
+ }
+ }
+ fputs("\"", fp);
+ svg_close_tag_empty_node(fp);
+}
+
+static void svg_text(
+ FILE * fp,
+ gfx_node_t *node)
+{
+ pdf_coords g;
+ const char *fontname;
+
+ /* as svg has 0,0 in top-left corner (like most screens) instead of
+ bottom-left corner like pdf and eps, we have to fake the coords
+ using offset and inverse sin(r) value */
+ int page_height = 1000;
+
+ pdf_calc(page_height, node, &g);
+ if (node->angle != 0) {
+ svg_start_tag(fp, "g");
+ /* can't use svg_write_number as 2 decimals is far from enough to avoid
+ skewed text */
+ fprintf(fp, " transform=\"matrix(%f,%f,%f,%f,%f,%f)\"",
+ g.ma, -g.mb, -g.mc, g.md, g.tmx, page_height - g.tmy);
+ svg_close_tag(fp);
+ }
+ svg_start_tag(fp, "text");
+ if (!node->angle) {
+ fputs(" x=\"", fp);
+ svg_write_number(fp, g.tmx);
+ fputs("\" y=\"", fp);
+ svg_write_number(fp, page_height - g.tmy);
+ fputs("\"", fp);
+ }
+ fontname = afm_get_font_name(node->filename);
+ if (strcmp(fontname, svg_default_font))
+ fprintf(fp, " font-family=\"%s\"", fontname);
+ fputs(" font-size=\"", fp);
+ svg_write_number(fp, node->size);
+ fputs("\"", fp);
+ if (!svg_color_is_black(node->color))
+ svg_write_color(fp, node->color, "fill");
+ svg_close_tag_single_line(fp);
+ /* support for node->tabwidth missing */
+ svg_write_text(fp, node->text);
+ svg_end_tag(fp, "text");
+ if (node->angle != 0)
+ svg_end_tag(fp, "g");
+}
+
+int gfx_render_svg(
+ gfx_canvas_t *canvas,
+ art_u32 width,
+ art_u32 height,
+ gfx_color_t background,
+ FILE * fp)
+{
+ gfx_node_t *node = canvas->firstnode;
+
+ /* Find the first font used, and assume it is the mostly used
+ one. It reduces the number of font-familty attributes. */
+ while (node) {
+ if (node->type == GFX_TEXT && node->filename) {
+ svg_default_font = afm_get_font_name(node->filename);
+ break;
+ }
+ node = node->next;
+ }
+ fputs("<?xml version=\"1.0\" standalone=\"no\"?>\n"
+ "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.0//EN\"\n"
+ " \"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n"
+ "<!--\n"
+ " SVG file created by\n"
+ " RRDtool " PACKAGE_VERSION
+ " Tobias Oetiker, http://tobi.oetiker.ch\n" "\n"
+ " The width/height attributes in the outhermost svg node\n"
+ " are just default sizes for the browser which is used\n"
+ " if the svg file is openened directly without being\n"
+ " embedded in an html file.\n"
+ " The viewBox is the local coord system for rrdtool.\n" "-->\n",
+ fp);
+ svg_start_tag(fp, "svg");
+ fputs(" width=\"", fp);
+ svg_write_number(fp, width * canvas->zoom);
+ fputs("\" height=\"", fp);
+ svg_write_number(fp, height * canvas->zoom);
+ fputs("\" x=\"0\" y=\"0\" viewBox=\"", fp);
+ svg_write_number(fp, -LINEOFFSET);
+ fputs(" ", fp);
+ svg_write_number(fp, -LINEOFFSET);
+ fputs(" ", fp);
+ svg_write_number(fp, width - LINEOFFSET);
+ fputs(" ", fp);
+ svg_write_number(fp, height - LINEOFFSET);
+ fputs("\" preserveAspectRatio=\"xMidYMid\"", fp);
+ fprintf(fp, " font-family=\"%s\"", svg_default_font); /* default font */
+ fputs(" stroke-linecap=\"round\" stroke-linejoin=\"round\"", fp);
+ fputs(" xmlns=\"http://www.w3.org/2000/svg\"", fp);
+ fputs(" xmlns:xlink=\"http://www.w3.org/1999/xlink\"", fp);
+ svg_close_tag(fp);
+ svg_start_tag(fp, "rect");
+ fprintf(fp, " x=\"0\" y=\"0\" width=\"%d\" height=\"%d\"", width, height);
+ svg_write_color(fp, background, "fill");
+ svg_close_tag_empty_node(fp);
+ node = canvas->firstnode;
+ while (node) {
+ switch (node->type) {
+ case GFX_LINE:
+ svg_multi_path(fp, &node);
+ break;
+ case GFX_AREA:
+ svg_area(fp, node);
+ break;
+ case GFX_TEXT:
+ svg_text(fp, node);
+ }
+ node = node->next;
+ }
+ svg_end_tag(fp, "svg");
+ return 0;
}
/* ------- EPS -------
http://partners.adobe.com/asn/developer/technotes/postscript.html
*/
-typedef struct eps_font
-{
- const char *ps_font;
- int id;
- struct eps_font *next;
+typedef struct eps_font {
+ const char *ps_font;
+ int id;
+ struct eps_font *next;
} eps_font;
-typedef struct eps_state
-{
- FILE *fp;
- gfx_canvas_t *canvas;
- art_u32 page_width, page_height;
- eps_font *font_list;
+typedef struct eps_state {
+ FILE *fp;
+ gfx_canvas_t *canvas;
+ art_u32 page_width, page_height;
+ eps_font *font_list;
/*--*/
- gfx_color_t color;
- const char *font;
- double font_size;
- double line_width;
- int linecap, linejoin;
- int has_dash;
+ gfx_color_t color;
+ const char *font;
+ double font_size;
+ double line_width;
+ int linecap, linejoin;
+ int has_dash;
} eps_state;
-static void eps_set_color(eps_state *state, gfx_color_t color)
-{
- /* gfx_color_t is RRGGBBAA */
- if (state->color == color)
- return;
- fprintf(state->fp, "%d %d %d Rgb\n",
- (int)((color >> 24) & 255),
- (int)((color >> 16) & 255),
- (int)((color >> 8) & 255));
- state->color = color;
-}
-
-static int eps_add_font(eps_state *state, gfx_node_t *node)
-{
- /* The fonts list could be postponed to the end using
- (atend), but let's be nice and have them in the header. */
- const char *ps_font = afm_get_font_postscript_name(node->filename);
- eps_font *ef;
- for (ef = state->font_list; ef; ef = ef->next) {
- if (!strcmp(ps_font, ef->ps_font))
- return 0;
- }
- ef = malloc(sizeof(eps_font));
- if (ef == NULL) {
- rrd_set_error("malloc for eps_font");
- return -1;
- }
- ef->next = state->font_list;
- ef->ps_font = ps_font;
- state->font_list = ef;
- return 0;
-}
-
-static void eps_list_fonts(eps_state *state, const char *dscName)
-{
- eps_font *ef;
- int lineLen = strlen(dscName);
- if (!state->font_list)
- return;
- fputs(dscName, state->fp);
- for (ef = state->font_list; ef; ef = ef->next) {
- int nameLen = strlen(ef->ps_font);
- if (lineLen + nameLen > 100 && lineLen) {
- fputs("\n", state->fp);
- fputs("%%- \n", state->fp);
- lineLen = 5;
+static void eps_set_color(
+ eps_state *state,
+ gfx_color_t color)
+{
+#if USE_EPS_FAKE_ALPHA
+ double a1, a2;
+#endif
+ /* gfx_color_t is RRGGBBAA */
+ if (state->color == color)
+ return;
+#if USE_EPS_FAKE_ALPHA
+ a1 = (color & 255) / 255.0;
+ a2 = 255 * (1 - a1);
+#define eps_color_calc(x) (int)( ((x) & 255) * a1 + a2)
+#else
+#define eps_color_calc(x) (int)( (x) & 255)
+#endif
+ /* gfx_color_t is RRGGBBAA */
+ if (state->color == color)
+ return;
+ fprintf(state->fp, "%d %d %d Rgb\n",
+ eps_color_calc(color >> 24),
+ eps_color_calc(color >> 16), eps_color_calc(color >> 8));
+ state->color = color;
+}
+
+static int eps_add_font(
+ eps_state *state,
+ gfx_node_t *node)
+{
+ /* The fonts list could be postponed to the end using
+ (atend), but let's be nice and have them in the header. */
+ const char *ps_font = afm_get_font_postscript_name(node->filename);
+ eps_font *ef;
+
+ for (ef = state->font_list; ef; ef = ef->next) {
+ if (!strcmp(ps_font, ef->ps_font))
+ return 0;
+ }
+ ef = malloc(sizeof(eps_font));
+ if (ef == NULL) {
+ rrd_set_error("malloc for eps_font");
+ return -1;
+ }
+ ef->next = state->font_list;
+ ef->ps_font = ps_font;
+ state->font_list = ef;
+ return 0;
+}
+
+static void eps_list_fonts(
+ eps_state *state,
+ const char *dscName)
+{
+ eps_font *ef;
+ int lineLen = strlen(dscName);
+
+ if (!state->font_list)
+ return;
+ fputs(dscName, state->fp);
+ for (ef = state->font_list; ef; ef = ef->next) {
+ int nameLen = strlen(ef->ps_font);
+
+ if (lineLen + nameLen > 100 && lineLen) {
+ fputs("\n", state->fp);
+ fputs("%%- \n", state->fp);
+ lineLen = 5;
+ } else {
+ fputs(" ", state->fp);
+ lineLen++;
+ }
+ fputs(ef->ps_font, state->fp);
+ lineLen += nameLen;
+ }
+ fputs("\n", state->fp);
+}
+
+static void eps_define_fonts(
+ eps_state *state)
+{
+ eps_font *ef;
+
+ if (!state->font_list)
+ return;
+ for (ef = state->font_list; ef; ef = ef->next) {
+ /* PostScript¨ LANGUAGE REFERENCE third edition
+ page 349 */
+ fprintf(state->fp,
+ "%%\n"
+ "/%s findfont dup length dict begin\n"
+ "{ 1 index /FID ne {def} {pop pop} ifelse } forall\n"
+ "/Encoding ISOLatin1Encoding def\n"
+ "currentdict end\n"
+ "/%s-ISOLatin1 exch definefont pop\n"
+ "/SetFont-%s { /%s-ISOLatin1 findfont exch scalefont setfont } bd\n",
+ ef->ps_font, ef->ps_font, ef->ps_font, ef->ps_font);
+ }
+}
+
+static int eps_prologue(
+ eps_state *state)
+{
+ gfx_node_t *node;
+
+ fputs("%!PS-Adobe-3.0 EPSF-3.0\n"
+ "%%Creator: RRDtool " PACKAGE_VERSION
+ " Tobias Oetiker, http://tobi.oetiker.ch\n"
+ /* can't like weird chars here */
+ "%%Title: (RRDtool output)\n"
+ "%%DocumentData: Clean7Bit\n" "", state->fp);
+ fprintf(state->fp, "%%%%BoundingBox: 0 0 %d %d\n",
+ state->page_width, state->page_height);
+ for (node = state->canvas->firstnode; node; node = node->next) {
+ if (node->type == GFX_TEXT && eps_add_font(state, node) == -1)
+ return -1;
+ }
+ eps_list_fonts(state, "%%DocumentFonts:");
+ eps_list_fonts(state, "%%DocumentNeededFonts:");
+ fputs("%%EndComments\n" "%%BeginProlog\n" "%%EndProlog\n" /* must have, or BoundingBox is ignored */
+ "/bd { bind def } bind def\n" "", state->fp);
+ fprintf(state->fp, "/X { %.2f add } bd\n", LINEOFFSET);
+ fputs("/X2 {X exch X exch} bd\n"
+ "/M {X2 moveto} bd\n"
+ "/L {X2 lineto} bd\n"
+ "/m {moveto} bd\n"
+ "/l {lineto} bd\n"
+ "/S {stroke} bd\n"
+ "/CP {closepath} bd\n"
+ "/WS {setlinewidth stroke} bd\n"
+ "/F {fill} bd\n"
+ "/T1 {gsave} bd\n"
+ "/T2 {concat 0 0 moveto show grestore} bd\n"
+ "/T {moveto show} bd\n"
+ "/Rgb { 255.0 div 3 1 roll\n"
+ " 255.0 div 3 1 roll \n"
+ " 255.0 div 3 1 roll setrgbcolor } bd\n" "", state->fp);
+ eps_define_fonts(state);
+ return 0;
+}
+
+static void eps_clear_dash(
+ eps_state *state)
+{
+ if (!state->has_dash)
+ return;
+ state->has_dash = 0;
+ fputs("[1 0] 0 setdash\n", state->fp);
+}
+
+static void eps_write_linearea(
+ eps_state *state,
+ gfx_node_t *node)
+{
+ int i;
+ FILE *fp = state->fp;
+ int useOffset = 0;
+ int clearDashIfAny = 1;
+
+ eps_set_color(state, node->color);
+ if (node->type == GFX_LINE) {
+ svg_dash dash_info;
+
+ if (state->linecap != 1) {
+ fputs("1 setlinecap\n", fp);
+ state->linecap = 1;
+ }
+ if (state->linejoin != 1) {
+ fputs("1 setlinejoin\n", fp);
+ state->linejoin = 1;
+ }
+ svg_get_dash(node, &dash_info);
+ if (dash_info.dash_enable) {
+ clearDashIfAny = 0;
+ state->has_dash = 1;
+ fputs("[", fp);
+ svg_write_number(fp, dash_info.adjusted_on);
+ fputs(" ", fp);
+ svg_write_number(fp, dash_info.adjusted_off);
+ fputs("] ", fp);
+ svg_write_number(fp, dash_info.dash_offset);
+ fputs(" setdash\n", fp);
+ }
+ }
+ if (clearDashIfAny)
+ eps_clear_dash(state);
+ for (i = 0; i < node->points; i++) {
+ ArtVpath *vec = node->path + i;
+ double x = vec->x;
+ double y = state->page_height - vec->y;
+
+ if (vec->code == ART_MOVETO_OPEN || vec->code == ART_MOVETO)
+ useOffset = (fabs(x - floor(x) - 0.5) < 0.01
+ && fabs(y - floor(y) - 0.5) < 0.01);
+ if (useOffset) {
+ x -= LINEOFFSET;
+ y -= LINEOFFSET;
+ }
+ switch (vec->code) {
+ case ART_MOVETO_OPEN: /* fall-through */
+ case ART_MOVETO:
+ svg_write_number(fp, x);
+ fputc(' ', fp);
+ svg_write_number(fp, y);
+ fputc(' ', fp);
+ fputs(useOffset ? "M\n" : "m\n", fp);
+ break;
+ case ART_LINETO:
+ svg_write_number(fp, x);
+ fputc(' ', fp);
+ svg_write_number(fp, y);
+ fputc(' ', fp);
+ fputs(useOffset ? "L\n" : "l\n", fp);
+ break;
+ case ART_CURVETO:
+ break; /* unsupported */
+ case ART_END:
+ break; /* nop */
+ }
+ }
+ if (node->type == GFX_LINE) {
+ if (node->closed_path)
+ fputs("CP ", fp);
+ if (node->size != state->line_width) {
+ state->line_width = node->size;
+ svg_write_number(fp, state->line_width);
+ fputs(" WS\n", fp);
+ } else {
+ fputs("S\n", fp);
+ }
} else {
- fputs(" ", state->fp);
- lineLen++;
- }
- fputs(ef->ps_font, state->fp);
- lineLen += nameLen;
- }
- fputs("\n", state->fp);
-}
-
-static void eps_define_fonts(eps_state *state)
-{
- eps_font *ef;
- if (!state->font_list)
- return;
- for (ef = state->font_list; ef; ef = ef->next) {
- /* PostScript¨ LANGUAGE REFERENCE third edition
- page 349 */
- fprintf(state->fp,
- "%%\n"
- "/%s findfont dup length dict begin\n"
- "{ 1 index /FID ne {def} {pop pop} ifelse } forall\n"
- "/Encoding ISOLatin1Encoding def\n"
- "currentdict end\n"
- "/%s-ISOLatin1 exch definefont pop\n"
- "/SetFont-%s { /%s-ISOLatin1 findfont exch scalefont setfont } bd\n",
- ef->ps_font, ef->ps_font, ef->ps_font, ef->ps_font);
- }
-}
-
-static int eps_prologue(eps_state *state)
-{
- gfx_node_t *node;
- fputs(
- "%!PS-Adobe-3.0 EPSF-3.0\n"
- "%%Creator: RRDtool 1.1.x, Tobias Oetiker, http://tobi.oetiker.ch\n"
- /* can't like weird chars here */
- "%%Title: (RRDTool output)\n"
- "%%DocumentData: Clean7Bit\n"
- "", state->fp);
- fprintf(state->fp, "%%%%BoundingBox: 0 0 %d %d\n",
- state->page_width, state->page_height);
- for (node = state->canvas->firstnode; node; node = node->next) {
- if (node->type == GFX_TEXT && eps_add_font(state, node) == -1)
- return -1;
- }
- eps_list_fonts(state, "%%DocumentFonts:");
- eps_list_fonts(state, "%%DocumentNeededFonts:");
- fputs(
- "%%EndComments\n"
- "%%BeginProlog\n"
- "%%EndProlog\n" /* must have, or BoundingBox is ignored */
- "/bd { bind def } bind def\n"
- "", state->fp);
- fprintf(state->fp, "/X { %.2f add } bd\n", LINEOFFSET);
- fputs(
- "/X2 {X exch X exch} bd\n"
- "/M {X2 moveto} bd\n"
- "/L {X2 lineto} bd\n"
- "/m {moveto} bd\n"
- "/l {lineto} bd\n"
- "/S {stroke} bd\n"
- "/CP {closepath} bd\n"
- "/WS {setlinewidth stroke} bd\n"
- "/F {fill} bd\n"
- "/TaL { } bd\n"
- "/TaC {dup stringwidth pop neg 2 div 0 rmoveto } bd\n"
- "/TaR {dup stringwidth pop neg 0 rmoveto } bd\n"
- "/TL {moveto TaL show} bd\n"
- "/TC {moveto TaC show} bd\n"
- "/TR {moveto TaR show} bd\n"
- "/Rgb { 255.0 div 3 1 roll\n"
- " 255.0 div 3 1 roll \n"
- " 255.0 div 3 1 roll setrgbcolor } bd\n"
- "", state->fp);
- eps_define_fonts(state);
- return 0;
-}
-
-static void eps_clear_dash(eps_state *state)
-{
- if (!state->has_dash)
- return;
- state->has_dash = 0;
- fputs("[1 0] 0 setdash\n", state->fp);
-}
-
-static void eps_write_linearea(eps_state *state, gfx_node_t *node)
-{
- int i;
- FILE *fp = state->fp;
- int useOffset = 0;
- int clearDashIfAny = 1;
- eps_set_color(state, node->color);
- if (node->type == GFX_LINE) {
- svg_dash dash_info;
- if (state->linecap != 1) {
- fputs("1 setlinecap\n", fp);
- state->linecap = 1;
- }
- if (state->linejoin != 1) {
- fputs("1 setlinejoin\n", fp);
- state->linejoin = 1;
+ fputs("F\n", fp);
}
- svg_get_dash(node, &dash_info);
- if (dash_info.dash_enable) {
- clearDashIfAny = 0;
- state->has_dash = 1;
- fputs("[", fp);
- svg_write_number(fp, dash_info.adjusted_on);
- fputs(" ", fp);
- svg_write_number(fp, dash_info.adjusted_off);
- fputs("] ", fp);
- svg_write_number(fp, dash_info.dash_offset);
- fputs(" setdash\n", fp);
- }
- }
- if (clearDashIfAny)
- eps_clear_dash(state);
- for (i = 0; i < node->points; i++) {
- ArtVpath *vec = node->path + i;
- double x = vec->x;
- double y = state->page_height - vec->y;
- if (vec->code == ART_MOVETO_OPEN || vec->code == ART_MOVETO)
- useOffset = (fabs(x - floor(x) - 0.5) < 0.01 && fabs(y - floor(y) - 0.5) < 0.01);
- if (useOffset) {
- x -= LINEOFFSET;
- y -= LINEOFFSET;
- }
- switch (vec->code) {
- case ART_MOVETO_OPEN: /* fall-through */
- case ART_MOVETO:
- svg_write_number(fp, x);
- fputc(' ', fp);
- svg_write_number(fp, y);
- fputc(' ', fp);
- fputs(useOffset ? "M\n" : "m\n", fp);
- break;
- case ART_LINETO:
- svg_write_number(fp, x);
- fputc(' ', fp);
- svg_write_number(fp, y);
- fputc(' ', fp);
- fputs(useOffset ? "L\n" : "l\n", fp);
- break;
- case ART_CURVETO: break; /* unsupported */
- case ART_END: break; /* nop */
- }
- }
- if (node->type == GFX_LINE) {
- if (node->closed_path)
- fputs("CP ", fp);
- if (node->size != state->line_width) {
- state->line_width = node->size;
- svg_write_number(fp, state->line_width);
- fputs(" WS\n", fp);
+}
+
+static void eps_write_text(
+ eps_state *state,
+ gfx_node_t *node)
+{
+ FILE *fp = state->fp;
+ const char *ps_font = afm_get_font_postscript_name(node->filename);
+ int lineLen = 0;
+ pdf_coords g;
+
+#ifdef HAVE_MBSTOWCS
+ size_t clen;
+ wchar_t *p, *cstr, ch;
+ int text_count;
+
+ if (!node->text)
+ return;
+ clen = strlen(node->text) + 1;
+ cstr = malloc(sizeof(wchar_t) * clen);
+ text_count = mbstowcs(cstr, node->text, clen);
+ if (text_count == -1)
+ text_count = mbstowcs(cstr, "Enc-Err", 6);
+ p = cstr;
+#else
+ const unsigned char *p = node->text;
+ unsigned char ch;
+
+ if (!p)
+ return;
+#endif
+ pdf_calc(state->page_height, node, &g);
+ eps_set_color(state, node->color);
+ if (strcmp(ps_font, state->font) || node->size != state->font_size) {
+ state->font = ps_font;
+ state->font_size = node->size;
+ svg_write_number(fp, state->font_size);
+ fprintf(fp, " SetFont-%s\n", state->font);
+ }
+ if (node->angle)
+ fputs("T1 ", fp);
+ fputs("(", fp);
+ lineLen = 20;
+ while (1) {
+ ch = *p;
+ if (!ch)
+ break;
+ ch = afm_fix_osx_charset(ch); /* unsafe macro */
+ if (++lineLen > 70) {
+ fputs("\\\n", fp); /* backslash and \n */
+ lineLen = 0;
+ }
+ switch (ch) {
+ case '%':
+ case '(':
+ case ')':
+ case '\\':
+ fputc('\\', fp);
+ fputc(ch, fp);
+ break;
+ case '\n':
+ fputs("\\n", fp);
+ break;
+ case '\r':
+ fputs("\\r", fp);
+ break;
+ case '\t':
+ fputs("\\t", fp);
+ break;
+ default:
+ if (ch > 255) {
+ fputc('?', fp);
+ } else if (ch >= 126 || ch < 32) {
+ fprintf(fp, "\\%03o", (unsigned int) ch);
+ lineLen += 3;
+ } else {
+ fputc(ch, fp);
+ }
+ }
+ p++;
+ }
+#ifdef HAVE_MBSTOWCS
+ free(cstr);
+#endif
+ if (node->angle) {
+ /* can't use svg_write_number as 2 decimals is far from enough to avoid
+ skewed text */
+ fprintf(fp, ") [%f %f %f %f %f %f] T2\n",
+ g.ma, g.mb, g.mc, g.md, g.tmx, g.tmy);
} else {
- fputs("S\n", fp);
- }
- } else {
- fputs("F\n", fp);
- }
-}
-
-static void eps_write_text(eps_state *state, gfx_node_t *node)
-{
- FILE *fp = state->fp;
- const unsigned char *p;
- const char *ps_font = afm_get_font_postscript_name(node->filename);
- char align = 'L';
- double x = node->x;
- double y = state->page_height - node->y, ydelta = 0;
- int lineLen = 0;
- eps_set_color(state, node->color);
- if (strcmp(ps_font, state->font) || node->size != state->font_size) {
- state->font = ps_font;
- state->font_size = node->size;
- svg_write_number(fp, state->font_size);
- fprintf(fp, " SetFont-%s\n", state->font);
- }
- fputs("(", fp);
- lineLen = 20;
- for (p = (const unsigned char*)node->text; *p; p++) {
- if (lineLen > 70) {
- fputs("\\\n", fp); /* backslash and \n */
- lineLen = 0;
- }
- switch (*p) {
- case '(':
- case ')':
- case '\\':
- case '\n':
- case '\r':
- case '\t':
- fputc('\\', fp);
- lineLen++;
- /* fall-through */
- default:
- if (*p >= 126)
- fprintf(fp, "\\%03o", *p);
- else
- fputc(*p, fp);
- lineLen++;
- }
- }
- fputs(") ", fp);
- switch(node->valign){
- case GFX_V_TOP: ydelta = -node->size; break;
- case GFX_V_CENTER: ydelta = -node->size / 3.0; break;
- case GFX_V_BOTTOM: break;
- case GFX_V_NULL: break;
- }
- if (node->angle == 0)
- y += ydelta;
- switch (node->halign) {
- case GFX_H_RIGHT: align = 'R'; break;
- case GFX_H_CENTER: align = 'C'; break;
- case GFX_H_LEFT: align= 'L'; break;
- case GFX_H_NULL: align= 'L'; break;
- }
- if (node->angle != 0) {
- fputs("\n", fp);
- fputs(" gsave ", fp);
- svg_write_number(fp, x);
- fputc(' ', fp);
- svg_write_number(fp, y);
- fputs(" translate ", fp);
- svg_write_number(fp, -node->angle);
- fputs(" rotate 0 ", fp);
- svg_write_number(fp, ydelta);
- fputs(" moveto ", fp);
- fprintf(fp, "Ta%c", align);
- fputs(" show grestore\n", fp);
- } else {
- svg_write_number(fp, x);
- fputc(' ', fp);
- svg_write_number(fp, y);
- fputs(" T", fp);
- fputc(align, fp);
- fputc('\n', fp);
- }
-}
-
-static int eps_write_content(eps_state *state)
-{
- gfx_node_t *node;
- fputs("%\n", state->fp);
- for (node = state->canvas->firstnode; node; node = node->next) {
- switch (node->type) {
- case GFX_LINE:
- case GFX_AREA:
- eps_write_linearea(state, node);
- break;
- case GFX_TEXT:
- eps_write_text(state, node);
- break;
- }
- }
- return 0;
-}
-
-int gfx_render_eps (gfx_canvas_t *canvas,
- art_u32 width, art_u32 height,
- gfx_color_t background, FILE *fp){
- struct eps_state state;
- state.fp = fp;
- state.canvas = canvas;
- state.page_width = width;
- state.page_height = height;
- state.font = "no-default-font";
- state.font_size = -1;
- state.color = 0; /* black */
- state.font_list = NULL;
- state.linecap = -1;
- state.linejoin = -1;
- state.has_dash = 0;
- if (eps_prologue(&state) == -1)
- return -1;
- eps_set_color(&state, background);
- fprintf(fp, "0 0 M 0 %d L %d %d L %d 0 L fill\n",
- height, width, height, width);
- if (eps_write_content(&state) == -1)
+ fputs(") ", fp);
+ svg_write_number(fp, g.tmx);
+ fputs(" ", fp);
+ svg_write_number(fp, g.tmy);
+ fputs(" T\n", fp);
+ }
+}
+
+static int eps_write_content(
+ eps_state *state)
+{
+ gfx_node_t *node;
+
+ fputs("%\n", state->fp);
+ for (node = state->canvas->firstnode; node; node = node->next) {
+ switch (node->type) {
+ case GFX_LINE:
+ case GFX_AREA:
+ eps_write_linearea(state, node);
+ break;
+ case GFX_TEXT:
+ eps_write_text(state, node);
+ break;
+ }
+ }
+ return 0;
+}
+
+int gfx_render_eps(
+ gfx_canvas_t *canvas,
+ art_u32 width,
+ art_u32 height,
+ gfx_color_t background,
+ FILE * fp)
+{
+ struct eps_state state;
+
+ state.fp = fp;
+ state.canvas = canvas;
+ state.page_width = width;
+ state.page_height = height;
+ state.font = "no-default-font";
+ state.font_size = -1;
+ state.color = 0; /* black */
+ state.font_list = NULL;
+ state.linecap = -1;
+ state.linejoin = -1;
+ state.has_dash = 0;
+ state.line_width = 1;
+ if (eps_prologue(&state) == -1)
+ return -1;
+ eps_set_color(&state, background);
+ fprintf(fp, "0 0 M 0 %d L %d %d L %d 0 L fill\n",
+ height, width, height, width);
+ if (eps_write_content(&state) == -1)
+ return 0;
+ fputs("showpage\n", fp);
+ fputs("%%EOF\n", fp);
+ while (state.font_list) {
+ eps_font *next = state.font_list->next;
+
+ free(state.font_list);
+ state.font_list = next;
+ }
return 0;
- fputs("showpage\n", fp);
- fputs("%%EOF\n", fp);
- while (state.font_list) {
- eps_font *next = state.font_list->next;
- free(state.font_list);
- state.font_list = next;
- }
- return 0;
}
/* ------- PDF -------
PDF references page:
- http://partners.adobe.com/asn/developer/technotes/acrobatpdf.html
+ http://partners.adobe.com/public/developer/pdf/index_reference.html
*/
-typedef struct pdf_buffer
-{
- int id, is_obj, is_dict, is_stream, pdf_file_pos;
- char *data;
- int alloc_size, current_size;
- struct pdf_buffer *previous_buffer, *next_buffer;
- struct pdf_state *state;
+typedef struct pdf_buffer {
+ int id, is_obj, is_dict, is_stream, pdf_file_pos;
+ char *data;
+ int alloc_size, current_size;
+ struct pdf_buffer *previous_buffer, *next_buffer;
+ struct pdf_state *state;
} pdf_buffer;
-typedef struct pdf_font
-{
- const char *ps_font;
- pdf_buffer obj;
- struct pdf_font *next;
+typedef struct pdf_font {
+ const char *ps_font;
+ pdf_buffer obj;
+ struct pdf_font *next;
} pdf_font;
-typedef struct pdf_state
-{
- FILE *fp;
- gfx_canvas_t *canvas;
- art_u32 page_width, page_height;
- pdf_font *font_list;
- pdf_buffer *first_buffer, *last_buffer;
- int pdf_file_pos;
- int has_failed;
+typedef struct pdf_state {
+ FILE *fp;
+ gfx_canvas_t *canvas;
+ art_u32 page_width, page_height;
+ pdf_font *font_list;
+ pdf_buffer *first_buffer, *last_buffer;
+ int pdf_file_pos;
+ int has_failed;
/*--*/
- gfx_color_t stroke_color, fill_color;
- int font_id;
- double font_size;
- double line_width;
- svg_dash dash;
- int linecap, linejoin;
- int last_obj_id;
+ gfx_color_t stroke_color, fill_color;
+ int font_id;
+ double font_size;
+ double line_width;
+ svg_dash dash;
+ int linecap, linejoin;
+ int last_obj_id;
/*--*/
- pdf_buffer pdf_header;
- pdf_buffer catalog_obj, pages_obj, page1_obj;
- pdf_buffer fontsdict_obj;
- pdf_buffer graph_stream;
+ pdf_buffer pdf_header;
+ pdf_buffer info_obj, catalog_obj, pages_obj, page1_obj;
+ pdf_buffer fontsdict_obj;
+ pdf_buffer graph_stream;
} pdf_state;
-static void pdf_init_buffer(pdf_state *state, pdf_buffer *buf)
+static void pdf_init_buffer(
+ pdf_state *state,
+ pdf_buffer *buf)
+{
+ int initial_size = 32;
+
+ buf->state = state;
+ buf->id = -42;
+ buf->alloc_size = 0;
+ buf->current_size = 0;
+ buf->data = (char *) malloc(initial_size);
+ buf->is_obj = 0;
+ buf->previous_buffer = NULL;
+ buf->next_buffer = NULL;
+ if (buf->data == NULL) {
+ rrd_set_error("malloc for pdf_buffer data");
+ state->has_failed = 1;
+ return;
+ }
+ buf->alloc_size = initial_size;
+ if (state->last_buffer)
+ state->last_buffer->next_buffer = buf;
+ if (state->first_buffer == NULL)
+ state->first_buffer = buf;
+ buf->previous_buffer = state->last_buffer;
+ state->last_buffer = buf;
+}
+
+static void pdf_put(
+ pdf_buffer *buf,
+ const char *text,
+ int len)
{
- int initial_size = 32;
- buf->state = state;
- buf->id = -42;
- buf->alloc_size = 0;
- buf->current_size = 0;
- buf->data = (char*)malloc(initial_size);
- buf->is_obj = 0;
- buf->previous_buffer = NULL;
- buf->next_buffer = NULL;
- if (buf->data == NULL) {
- rrd_set_error("malloc for pdf_buffer data");
- state->has_failed = 1;
- return;
- }
- buf->alloc_size = initial_size;
- if (state->last_buffer)
- state->last_buffer->next_buffer = buf;
- if (state->first_buffer == NULL)
- state->first_buffer = buf;
- buf->previous_buffer = state->last_buffer;
- state->last_buffer = buf;
+ if (len <= 0)
+ return;
+ if (buf->alloc_size < buf->current_size + len) {
+ int new_size = buf->alloc_size;
+ char *new_buf;
+
+ while (new_size < buf->current_size + len)
+ new_size *= 4;
+ new_buf = (char *) malloc(new_size);
+ if (new_buf == NULL) {
+ rrd_set_error("re-malloc for pdf_buffer data");
+ buf->state->has_failed = 1;
+ return;
+ }
+ memcpy(new_buf, buf->data, buf->current_size);
+ free(buf->data);
+ buf->data = new_buf;
+ buf->alloc_size = new_size;
+ }
+ memcpy(buf->data + buf->current_size, text, len);
+ buf->current_size += len;
}
-static void pdf_put(pdf_buffer *buf, const char *text, int len)
+static void pdf_put_char(
+ pdf_buffer *buf,
+ char c)
{
- if (len <= 0)
- return;
- if (buf->alloc_size < buf->current_size + len) {
- int new_size = buf->alloc_size;
- char *new_buf;
- while (new_size < buf->current_size + len)
- new_size *= 4;
- new_buf = (char*)malloc(new_size);
- if (new_buf == NULL) {
- rrd_set_error("re-malloc for pdf_buffer data");
- buf->state->has_failed = 1;
- return;
+ if (buf->alloc_size >= buf->current_size + 1) {
+ buf->data[buf->current_size++] = c;
+ } else {
+ char tmp[1];
+
+ tmp[0] = (char) c;
+ pdf_put(buf, tmp, 1);
}
- memcpy(new_buf, buf->data, buf->current_size);
- free(buf->data);
- buf->data = new_buf;
- buf->alloc_size = new_size;
- }
- memcpy(buf->data + buf->current_size, text, len);
- buf->current_size += len;
}
-static void pdf_puts(pdf_buffer *buf, const char *text)
+static void pdf_puts(
+ pdf_buffer *buf,
+ const char *text)
{
- pdf_put(buf, text, strlen(text));
+ pdf_put(buf, text, strlen(text));
}
-static void pdf_indent(pdf_buffer *buf)
+static void pdf_indent(
+ pdf_buffer *buf)
{
- pdf_puts(buf, "\t");
+ pdf_puts(buf, "\t");
}
-static void pdf_putsi(pdf_buffer *buf, const char *text)
+static void pdf_putsi(
+ pdf_buffer *buf,
+ const char *text)
{
- pdf_indent(buf);
- pdf_puts(buf, text);
+ pdf_indent(buf);
+ pdf_puts(buf, text);
}
-static void pdf_putint(pdf_buffer *buf, int i)
+static void pdf_putint(
+ pdf_buffer *buf,
+ int i)
{
- char tmp[20];
- sprintf(tmp, "%d", i);
- pdf_puts(buf, tmp);
+ char tmp[20];
+
+ sprintf(tmp, "%d", i);
+ pdf_puts(buf, tmp);
}
-static void pdf_putnumber(pdf_buffer *buf, double d)
+static void pdf_putnumber(
+ pdf_buffer *buf,
+ double d)
{
- char tmp[50];
- svg_format_number(tmp, sizeof(tmp), d);
- pdf_puts(buf, tmp);
+ char tmp[50];
+
+ svg_format_number(tmp, sizeof(tmp), d);
+ pdf_puts(buf, tmp);
}
-static void pdf_init_object(pdf_state *state, pdf_buffer *buf)
+static void pdf_put_string_contents_wide(
+ pdf_buffer *buf,
+ const afm_char * text)
{
- pdf_init_buffer(state, buf);
- buf->id = ++state->last_obj_id;
- buf->is_obj = 1;
- buf->is_stream = 0;
+ const afm_char *p = text;
+
+ while (1) {
+ afm_char ch = *p;
+
+ ch = afm_fix_osx_charset(ch); /* unsafe macro */
+ switch (ch) {
+ case 0:
+ return;
+ case '(':
+ pdf_puts(buf, "\\(");
+ break;
+ case ')':
+ pdf_puts(buf, "\\)");
+ break;
+ case '\\':
+ pdf_puts(buf, "\\\\");
+ break;
+ case '\n':
+ pdf_puts(buf, "\\n");
+ break;
+ case '\r':
+ pdf_puts(buf, "\\r");
+ break;
+ case '\t':
+ pdf_puts(buf, "\\t");
+ break;
+ default:
+ if (ch > 255) {
+ pdf_put_char(buf, '?');
+ } else if (ch > 125 || ch < 32) {
+ pdf_put_char(buf, ch);
+ } else {
+ char tmp[10];
+
+ snprintf(tmp, sizeof(tmp), "\\%03o", (int) ch);
+ pdf_puts(buf, tmp);
+ }
+ }
+ p++;
+ }
}
-static void pdf_init_dict(pdf_state *state, pdf_buffer *buf)
+static void pdf_put_string_contents(
+ pdf_buffer *buf,
+ const char *text)
{
- pdf_init_object(state, buf);
- buf->is_dict = 1;
+#ifdef HAVE_MBSTOWCS
+ size_t clen = strlen(text) + 1;
+ wchar_t *cstr = malloc(sizeof(wchar_t) * clen);
+ int text_count = mbstowcs(cstr, text, clen);
+
+ if (text_count == -1)
+ text_count = mbstowcs(cstr, "Enc-Err", 6);
+ pdf_put_string_contents_wide(buf, cstr);
+#if 0
+ if (*text == 'W') {
+ fprintf(stderr, "Decoding utf8 for '%s'\n", text);
+ wchar_t *p = cstr;
+ char *pp = text;
+
+ fprintf(stderr, "sz wc = %d\n", sizeof(wchar_t));
+ while (*p) {
+ fprintf(stderr, " %d = %c versus %d = %c\n", *p, (char) *p,
+ 255 & (int) *pp, *pp);
+ p++;
+ pp++;
+ }
+ }
+#endif
+ free(cstr);
+#else
+ pdf_put_string_contents_wide(buf, text);
+#endif
+}
+
+static void pdf_init_object(
+ pdf_state *state,
+ pdf_buffer *buf)
+{
+ pdf_init_buffer(state, buf);
+ buf->id = ++state->last_obj_id;
+ buf->is_obj = 1;
+ buf->is_stream = 0;
}
-static void pdf_set_color(pdf_buffer *buf, gfx_color_t color,
- gfx_color_t *current_color, const char *op)
+static void pdf_init_dict(
+ pdf_state *state,
+ pdf_buffer *buf)
{
- /* gfx_color_t is RRGGBBAA */
- if (*current_color == color)
- return;
- pdf_putnumber(buf, ((color >> 24) & 255) / 255.0);
- pdf_puts(buf, " ");
- pdf_putnumber(buf, ((color >> 16) & 255) / 255.0);
- pdf_puts(buf, " ");
- pdf_putnumber(buf, ((color >> 8) & 255) / 255.0);
- pdf_puts(buf, " ");
- pdf_puts(buf, op);
- pdf_puts(buf, "\n");
- *current_color = color;
+ pdf_init_object(state, buf);
+ buf->is_dict = 1;
}
-static void pdf_set_stroke_color(pdf_buffer *buf, gfx_color_t color)
+static void pdf_set_color(
+ pdf_buffer *buf,
+ gfx_color_t color,
+ gfx_color_t *current_color,
+ const char *op)
+{
+#if USE_PDF_FAKE_ALPHA
+ double a1, a2;
+#endif
+ /* gfx_color_t is RRGGBBAA */
+ if (*current_color == color)
+ return;
+#if USE_PDF_FAKE_ALPHA
+ a1 = (color & 255) / 255.0;
+ a2 = 1 - a1;
+#define pdf_color_calc(x) ( ((x) & 255) / 255.0 * a1 + a2)
+#else
+#define pdf_color_calc(x) ( ((x) & 255) / 255.0)
+#endif
+ pdf_putnumber(buf, pdf_color_calc(color >> 24));
+ pdf_puts(buf, " ");
+ pdf_putnumber(buf, pdf_color_calc(color >> 16));
+ pdf_puts(buf, " ");
+ pdf_putnumber(buf, pdf_color_calc(color >> 8));
+ pdf_puts(buf, " ");
+ pdf_puts(buf, op);
+ pdf_puts(buf, "\n");
+ *current_color = color;
+}
+
+static void pdf_set_stroke_color(
+ pdf_buffer *buf,
+ gfx_color_t color)
{
pdf_set_color(buf, color, &buf->state->stroke_color, "RG");
}
-static void pdf_set_fill_color(pdf_buffer *buf, gfx_color_t color)
+static void pdf_set_fill_color(
+ pdf_buffer *buf,
+ gfx_color_t color)
{
pdf_set_color(buf, color, &buf->state->fill_color, "rg");
}
-static pdf_font *pdf_find_font(pdf_state *state, gfx_node_t *node)
-{
- const char *ps_font = afm_get_font_postscript_name(node->filename);
- pdf_font *ef;
- for (ef = state->font_list; ef; ef = ef->next) {
- if (!strcmp(ps_font, ef->ps_font))
- return ef;
- }
- return NULL;
-}
-
-static void pdf_add_font(pdf_state *state, gfx_node_t *node)
-{
- pdf_font *ef = pdf_find_font(state, node);
- if (ef)
- return;
- ef = malloc(sizeof(pdf_font));
- if (ef == NULL) {
- rrd_set_error("malloc for pdf_font");
- state->has_failed = 1;
- return;
- }
- pdf_init_dict(state, &ef->obj);
- ef->next = state->font_list;
- ef->ps_font = afm_get_font_postscript_name(node->filename);
- state->font_list = ef;
- /* fonts dict */
- pdf_putsi(&state->fontsdict_obj, "/F");
- pdf_putint(&state->fontsdict_obj, ef->obj.id);
- pdf_puts(&state->fontsdict_obj, " ");
- pdf_putint(&state->fontsdict_obj, ef->obj.id);
- pdf_puts(&state->fontsdict_obj, " 0 R\n");
- /* fonts def */
- pdf_putsi(&ef->obj, "/Type /Font\n");
- pdf_putsi(&ef->obj, "/Subtype /Type1\n");
- pdf_putsi(&ef->obj, "/Name /F");
- pdf_putint(&ef->obj, ef->obj.id);
- pdf_puts(&ef->obj, "\n");
- pdf_putsi(&ef->obj, "/BaseFont /");
- pdf_puts(&ef->obj, ef->ps_font);
- pdf_puts(&ef->obj, "\n");
- pdf_putsi(&ef->obj, "/Encoding /WinAnsiEncoding\n");
- /* 'Cp1252' (this is latin 1 extended with 27 characters;
- the encoding is also known as 'winansi')
- http://www.lowagie.com/iText/tutorial/ch09.html */
-}
-
-static void pdf_create_fonts(pdf_state *state)
-{
- gfx_node_t *node;
- for (node = state->canvas->firstnode; node; node = node->next) {
- if (node->type == GFX_TEXT)
- pdf_add_font(state, node);
- }
-}
-
-static void pdf_write_linearea(pdf_state *state, gfx_node_t *node)
-{
- int i;
- pdf_buffer *s = &state->graph_stream;
- if (node->type == GFX_LINE) {
- svg_dash dash_info;
- svg_get_dash(node, &dash_info);
- if (!svg_dash_equal(&dash_info, &state->dash)) {
- state->dash = dash_info;
- if (dash_info.dash_enable) {
- pdf_puts(s, "[");
- pdf_putnumber(s, dash_info.adjusted_on);
- pdf_puts(s, " ");
- pdf_putnumber(s, dash_info.adjusted_off);
- pdf_puts(s, "] ");
- pdf_putnumber(s, dash_info.dash_offset);
- pdf_puts(s, " d\n");
- } else {
- pdf_puts(s, "[] 0 d\n");
- }
- }
- pdf_set_stroke_color(s, node->color);
- if (state->linecap != 1) {
- pdf_puts(s, "1 j\n");
- state->linecap = 1;
- }
- if (state->linejoin != 1) {
- pdf_puts(s, "1 J\n");
- state->linejoin = 1;
- }
- if (node->size != state->line_width) {
- state->line_width = node->size;
- pdf_putnumber(s, state->line_width);
- pdf_puts(s, " w\n");
- }
- } else {
- pdf_set_fill_color(s, node->color);
- }
- for (i = 0; i < node->points; i++) {
- ArtVpath *vec = node->path + i;
- double x = vec->x;
- double y = state->page_height - vec->y;
- if (node->type == GFX_AREA) {
- x += LINEOFFSET; /* adjust for libart handling of areas */
- y -= LINEOFFSET;
- }
- switch (vec->code) {
- case ART_MOVETO_OPEN: /* fall-through */
- case ART_MOVETO:
- pdf_putnumber(s, x);
- pdf_puts(s, " ");
- pdf_putnumber(s, y);
- pdf_puts(s, " m\n");
- break;
- case ART_LINETO:
- pdf_putnumber(s, x);
- pdf_puts(s, " ");
- pdf_putnumber(s, y);
- pdf_puts(s, " l\n");
- break;
- case ART_CURVETO: break; /* unsupported */
- case ART_END: break; /* nop */
- }
- }
- if (node->type == GFX_LINE) {
- pdf_puts(s, node->closed_path ? "s\n" : "S\n");
- } else {
- pdf_puts(s, "f\n");
- }
-}
-
-static void pdf_write_text(pdf_state *state, gfx_node_t *node,
- int last_was_text, int next_is_text)
-{
- char tmp[30];
- pdf_buffer *s = &state->graph_stream;
- const unsigned char *p;
- pdf_font *font = pdf_find_font(state, node);
- double x = node->x;
- double y = state->page_height - node->y;
- double dx = 0, dy = 0;
- double cos_a = 0, sin_a = 0;
- if (font == NULL) {
- rrd_set_error("font disappeared");
- state->has_failed = 1;
- return;
- }
- switch(node->valign){
- case GFX_V_TOP: dy = -node->size; break;
- case GFX_V_CENTER: dy = -node->size / 3.0; break;
- case GFX_V_BOTTOM: break;
- case GFX_V_NULL: break;
- }
- switch (node->halign) {
- case GFX_H_RIGHT: dx = -afm_get_text_width(0, font->ps_font,
- node->size, node->tabwidth, node->text);
- break;
- case GFX_H_CENTER: dx = -afm_get_text_width(0, font->ps_font,
- node->size, node->tabwidth, node->text) / 2;
- break;
- case GFX_H_LEFT: break;
- case GFX_H_NULL: break;
- }
- pdf_set_fill_color(s, node->color);
- if (node->angle != 0) {
- double a = 2 * M_PI * -node->angle / 360.0;
- double new_x, new_y;
- cos_a = cos(a);
- sin_a = sin(a);
- new_x = cos_a * dx - sin_a * dy + x;
- new_y = sin_a * dx + cos_a * dy + y;
- x = new_x;
- y = new_y;
- } else {
- x += dx;
- y += dy;
- }
- if (!last_was_text)
- pdf_puts(s, "BT\n");
- if (state->font_id != font->obj.id || node->size != state->font_size) {
- state->font_id = font->obj.id;
- state->font_size = node->size;
- pdf_puts(s, "/F");
- pdf_putint(s, font->obj.id);
- pdf_puts(s, " ");
- pdf_putnumber(s, node->size);
- pdf_puts(s, " Tf\n");
- }
- if (node->angle == 0) {
- pdf_puts(s, "1 0 0 1 ");
- } else {
- pdf_putnumber(s, cos_a);
- pdf_puts(s, " ");
- pdf_putnumber(s, sin_a);
- pdf_puts(s, " ");
- pdf_putnumber(s, -sin_a);
- pdf_puts(s, " ");
- pdf_putnumber(s, cos_a);
+static pdf_font *pdf_find_font(
+ pdf_state *state,
+ gfx_node_t *node)
+{
+ const char *ps_font = afm_get_font_postscript_name(node->filename);
+ pdf_font *ef;
+
+ for (ef = state->font_list; ef; ef = ef->next) {
+ if (!strcmp(ps_font, ef->ps_font))
+ return ef;
+ }
+ return NULL;
+}
+
+static void pdf_add_font(
+ pdf_state *state,
+ gfx_node_t *node)
+{
+ pdf_font *ef = pdf_find_font(state, node);
+
+ if (ef)
+ return;
+ ef = malloc(sizeof(pdf_font));
+ if (ef == NULL) {
+ rrd_set_error("malloc for pdf_font");
+ state->has_failed = 1;
+ return;
+ }
+ pdf_init_dict(state, &ef->obj);
+ ef->next = state->font_list;
+ ef->ps_font = afm_get_font_postscript_name(node->filename);
+ state->font_list = ef;
+ /* fonts dict */
+ pdf_putsi(&state->fontsdict_obj, "/F");
+ pdf_putint(&state->fontsdict_obj, ef->obj.id);
+ pdf_puts(&state->fontsdict_obj, " ");
+ pdf_putint(&state->fontsdict_obj, ef->obj.id);
+ pdf_puts(&state->fontsdict_obj, " 0 R\n");
+ /* fonts def */
+ pdf_putsi(&ef->obj, "/Type /Font\n");
+ pdf_putsi(&ef->obj, "/Subtype /Type1\n");
+ pdf_putsi(&ef->obj, "/Name /F");
+ pdf_putint(&ef->obj, ef->obj.id);
+ pdf_puts(&ef->obj, "\n");
+ pdf_putsi(&ef->obj, "/BaseFont /");
+ pdf_puts(&ef->obj, ef->ps_font);
+ pdf_puts(&ef->obj, "\n");
+ pdf_putsi(&ef->obj, "/Encoding /WinAnsiEncoding\n");
+ /* 'Cp1252' (this is latin 1 extended with 27 characters;
+ the encoding is also known as 'winansi')
+ http://www.lowagie.com/iText/tutorial/ch09.html */
+}
+
+static void pdf_create_fonts(
+ pdf_state *state)
+{
+ gfx_node_t *node;
+
+ for (node = state->canvas->firstnode; node; node = node->next) {
+ if (node->type == GFX_TEXT)
+ pdf_add_font(state, node);
+ }
+}
+
+static void pdf_write_linearea(
+ pdf_state *state,
+ gfx_node_t *node)
+{
+ int i;
+ pdf_buffer *s = &state->graph_stream;
+
+ if (node->type == GFX_LINE) {
+ svg_dash dash_info;
+
+ svg_get_dash(node, &dash_info);
+ if (!svg_dash_equal(&dash_info, &state->dash)) {
+ state->dash = dash_info;
+ if (dash_info.dash_enable) {
+ pdf_puts(s, "[");
+ pdf_putnumber(s, dash_info.adjusted_on);
+ pdf_puts(s, " ");
+ pdf_putnumber(s, dash_info.adjusted_off);
+ pdf_puts(s, "] ");
+ pdf_putnumber(s, dash_info.dash_offset);
+ pdf_puts(s, " d\n");
+ } else {
+ pdf_puts(s, "[] 0 d\n");
+ }
+ }
+ pdf_set_stroke_color(s, node->color);
+ if (state->linecap != 1) {
+ pdf_puts(s, "1 j\n");
+ state->linecap = 1;
+ }
+ if (state->linejoin != 1) {
+ pdf_puts(s, "1 J\n");
+ state->linejoin = 1;
+ }
+ if (node->size != state->line_width) {
+ state->line_width = node->size;
+ pdf_putnumber(s, state->line_width);
+ pdf_puts(s, " w\n");
+ }
+ } else {
+ pdf_set_fill_color(s, node->color);
+ }
+ for (i = 0; i < node->points; i++) {
+ ArtVpath *vec = node->path + i;
+ double x = vec->x;
+ double y = state->page_height - vec->y;
+
+ if (node->type == GFX_AREA) {
+ x += LINEOFFSET; /* adjust for libart handling of areas */
+ y -= LINEOFFSET;
+ }
+ switch (vec->code) {
+ case ART_MOVETO_OPEN: /* fall-through */
+ case ART_MOVETO:
+ pdf_putnumber(s, x);
+ pdf_puts(s, " ");
+ pdf_putnumber(s, y);
+ pdf_puts(s, " m\n");
+ break;
+ case ART_LINETO:
+ pdf_putnumber(s, x);
+ pdf_puts(s, " ");
+ pdf_putnumber(s, y);
+ pdf_puts(s, " l\n");
+ break;
+ case ART_CURVETO:
+ break; /* unsupported */
+ case ART_END:
+ break; /* nop */
+ }
+ }
+ if (node->type == GFX_LINE) {
+ pdf_puts(s, node->closed_path ? "s\n" : "S\n");
+ } else {
+ pdf_puts(s, "f\n");
+ }
+}
+
+
+static void pdf_write_matrix(
+ pdf_state *state,
+ gfx_node_t *node,
+ pdf_coords * g,
+ int useTM)
+{
+ char tmp[150];
+ pdf_buffer *s = &state->graph_stream;
+
+ if (node->angle == 0) {
+ pdf_puts(s, "1 0 0 1 ");
+ pdf_putnumber(s, useTM ? g->tmx : g->mx);
+ pdf_puts(s, " ");
+ pdf_putnumber(s, useTM ? g->tmy : g->my);
+ } else {
+ /* can't use svg_write_number as 2 decimals is far from enough to avoid
+ skewed text */
+ sprintf(tmp, "%f %f %f %f %f %f",
+ g->ma, g->mb, g->mc, g->md,
+ useTM ? g->tmx : g->mx, useTM ? g->tmy : g->my);
+ pdf_puts(s, tmp);
+ }
+}
+
+static void pdf_write_text(
+ pdf_state *state,
+ gfx_node_t *node,
+ int last_was_text,
+ int next_is_text)
+{
+ pdf_coords g;
+ pdf_buffer *s = &state->graph_stream;
+ pdf_font *font = pdf_find_font(state, node);
+
+ if (font == NULL) {
+ rrd_set_error("font disappeared");
+ state->has_failed = 1;
+ return;
+ }
+ pdf_calc(state->page_height, node, &g);
+#if PDF_CALC_DEBUG
+ pdf_puts(s, "q % debug green box\n");
+ pdf_write_matrix(state, node, &g, 0);
+ pdf_puts(s, " cm\n");
+ pdf_set_fill_color(s, 0x90FF9000);
+ pdf_puts(s, "0 0.4 0 rg\n");
+ pdf_puts(s, "0 0 ");
+ pdf_putnumber(s, g.sizep.x);
pdf_puts(s, " ");
- }
- pdf_putnumber(s, x);
- pdf_puts(s, " ");
- pdf_putnumber(s, y);
- pdf_puts(s, " Tm\n");
- pdf_puts(s, "(");
- for (p = (const unsigned char*)node->text; *p; p++) {
- switch (*p) {
- case '(':
- case ')':
- case '\\':
- case '\n':
- case '\r':
- case '\t':
- pdf_puts(s, "\\");
- /* fall-through */
- default:
- if (*p >= 126) {
- snprintf(tmp, sizeof(tmp), "\\%03o", *p);
- pdf_puts(s, tmp);
- } else {
- pdf_put(s, (const char*)p, 1);
- }
- }
- }
- pdf_puts(s, ") Tj\n");
- if (!next_is_text)
- pdf_puts(s, "ET\n");
-}
-
-static void pdf_write_content(pdf_state *state)
-{
- gfx_node_t *node;
- int last_was_text = 0, next_is_text;
- for (node = state->canvas->firstnode; node; node = node->next) {
- switch (node->type) {
- case GFX_LINE:
- case GFX_AREA:
- pdf_write_linearea(state, node);
- break;
- case GFX_TEXT:
- next_is_text = node->next && node->next->type == GFX_TEXT;
- pdf_write_text(state, node, last_was_text, next_is_text);
- break;
- }
- last_was_text = node->type == GFX_TEXT;
- }
-}
-
-static void pdf_init_document(pdf_state *state)
-{
- pdf_init_buffer(state, &state->pdf_header);
- pdf_init_dict(state, &state->catalog_obj);
- pdf_init_dict(state, &state->pages_obj);
- pdf_init_dict(state, &state->page1_obj);
- pdf_init_dict(state, &state->fontsdict_obj);
- pdf_create_fonts(state);
- if (state->has_failed)
- return;
- /* make stream last object in file */
- pdf_init_object(state, &state->graph_stream);
- state->graph_stream.is_stream = 1;
-}
-
-static void pdf_setup_document(pdf_state *state)
-{
- /* all objects created by now, so init code can reference them */
- /* HEADER */
- pdf_puts(&state->pdf_header, "%PDF-1.3\n");
- /* following 8 bit comment is recommended by Adobe for
- indicating binary file to file transfer applications */
- pdf_puts(&state->pdf_header, "%\xE2\xE3\xCF\xD3\n");
- /* CATALOG */
- pdf_putsi(&state->catalog_obj, "/Type /Catalog\n");
- pdf_putsi(&state->catalog_obj, "/Pages ");
- pdf_putint(&state->catalog_obj, state->pages_obj.id);
- pdf_puts(&state->catalog_obj, " 0 R\n");
- /* PAGES */
- pdf_putsi(&state->pages_obj, "/Type /Pages\n");
- pdf_putsi(&state->pages_obj, "/Kids [");
- pdf_putint(&state->pages_obj, state->page1_obj.id);
- pdf_puts(&state->pages_obj, " 0 R]\n");
- pdf_putsi(&state->pages_obj, "/Count 1\n");
- /* PAGE 1 */
- pdf_putsi(&state->page1_obj, "/Type /Page\n");
- pdf_putsi(&state->page1_obj, "/Parent ");
- pdf_putint(&state->page1_obj, state->pages_obj.id);
- pdf_puts(&state->page1_obj, " 0 R\n");
- pdf_putsi(&state->page1_obj, "/MediaBox [0 0 ");
- pdf_putint(&state->page1_obj, state->page_width);
- pdf_puts(&state->page1_obj, " ");
- pdf_putint(&state->page1_obj, state->page_height);
- pdf_puts(&state->page1_obj, "]\n");
- pdf_putsi(&state->page1_obj, "/Contents ");
- pdf_putint(&state->page1_obj, state->graph_stream.id);
- pdf_puts(&state->page1_obj, " 0 R\n");
- pdf_putsi(&state->page1_obj, "/Resources << /Font ");
- pdf_putint(&state->page1_obj, state->fontsdict_obj.id);
- pdf_puts(&state->page1_obj, " 0 R >>\n");
-}
-
-static void pdf_write_string_to_file(pdf_state *state, const char *text)
+ pdf_putnumber(s, g.sizep.y);
+ pdf_puts(s, " re\n");
+ pdf_puts(s, "f\n");
+ pdf_puts(s, "Q\n");
+#endif
+ pdf_set_fill_color(s, node->color);
+ if (PDF_CALC_DEBUG || !last_was_text)
+ pdf_puts(s, "BT\n");
+ if (state->font_id != font->obj.id || node->size != state->font_size) {
+ state->font_id = font->obj.id;
+ state->font_size = node->size;
+ pdf_puts(s, "/F");
+ pdf_putint(s, font->obj.id);
+ pdf_puts(s, " ");
+ pdf_putnumber(s, node->size);
+ pdf_puts(s, " Tf\n");
+ }
+ pdf_write_matrix(state, node, &g, 1);
+ pdf_puts(s, " Tm\n");
+ pdf_puts(s, "(");
+ pdf_put_string_contents(s, node->text);
+ pdf_puts(s, ") Tj\n");
+ if (PDF_CALC_DEBUG || !next_is_text)
+ pdf_puts(s, "ET\n");
+}
+
+static void pdf_write_content(
+ pdf_state *state)
+{
+ gfx_node_t *node;
+ int last_was_text = 0, next_is_text;
+
+ for (node = state->canvas->firstnode; node; node = node->next) {
+ switch (node->type) {
+ case GFX_LINE:
+ case GFX_AREA:
+ pdf_write_linearea(state, node);
+ break;
+ case GFX_TEXT:
+ next_is_text = node->next && node->next->type == GFX_TEXT;
+ pdf_write_text(state, node, last_was_text, next_is_text);
+ break;
+ }
+ last_was_text = node->type == GFX_TEXT;
+ }
+}
+
+static void pdf_init_document(
+ pdf_state *state)
+{
+ pdf_init_buffer(state, &state->pdf_header);
+ pdf_init_dict(state, &state->catalog_obj);
+ pdf_init_dict(state, &state->info_obj);
+ pdf_init_dict(state, &state->pages_obj);
+ pdf_init_dict(state, &state->page1_obj);
+ pdf_init_dict(state, &state->fontsdict_obj);
+ pdf_create_fonts(state);
+ if (state->has_failed)
+ return;
+ /* make stream last object in file */
+ pdf_init_object(state, &state->graph_stream);
+ state->graph_stream.is_stream = 1;
+}
+
+static void pdf_setup_document(
+ pdf_state *state)
+{
+ const char *creator =
+ "RRDtool " PACKAGE_VERSION " Tobias Oetiker, http://tobi.oetiker.ch";
+ /* all objects created by now, so init code can reference them */
+ /* HEADER */
+ pdf_puts(&state->pdf_header, "%PDF-1.3\n");
+ /* following 8 bit comment is recommended by Adobe for
+ indicating binary file to file transfer applications */
+ pdf_puts(&state->pdf_header, "%\xE2\xE3\xCF\xD3\n");
+ /* INFO */
+ pdf_putsi(&state->info_obj, "/Creator (");
+ pdf_put_string_contents(&state->info_obj, creator);
+ pdf_puts(&state->info_obj, ")\n");
+ /* CATALOG */
+ pdf_putsi(&state->catalog_obj, "/Type /Catalog\n");
+ pdf_putsi(&state->catalog_obj, "/Pages ");
+ pdf_putint(&state->catalog_obj, state->pages_obj.id);
+ pdf_puts(&state->catalog_obj, " 0 R\n");
+ /* PAGES */
+ pdf_putsi(&state->pages_obj, "/Type /Pages\n");
+ pdf_putsi(&state->pages_obj, "/Kids [");
+ pdf_putint(&state->pages_obj, state->page1_obj.id);
+ pdf_puts(&state->pages_obj, " 0 R]\n");
+ pdf_putsi(&state->pages_obj, "/Count 1\n");
+ /* PAGE 1 */
+ pdf_putsi(&state->page1_obj, "/Type /Page\n");
+ pdf_putsi(&state->page1_obj, "/Parent ");
+ pdf_putint(&state->page1_obj, state->pages_obj.id);
+ pdf_puts(&state->page1_obj, " 0 R\n");
+ pdf_putsi(&state->page1_obj, "/MediaBox [0 0 ");
+ pdf_putint(&state->page1_obj, state->page_width);
+ pdf_puts(&state->page1_obj, " ");
+ pdf_putint(&state->page1_obj, state->page_height);
+ pdf_puts(&state->page1_obj, "]\n");
+ pdf_putsi(&state->page1_obj, "/Contents ");
+ pdf_putint(&state->page1_obj, state->graph_stream.id);
+ pdf_puts(&state->page1_obj, " 0 R\n");
+ pdf_putsi(&state->page1_obj, "/Resources << /Font ");
+ pdf_putint(&state->page1_obj, state->fontsdict_obj.id);
+ pdf_puts(&state->page1_obj, " 0 R >>\n");
+}
+
+static void pdf_write_string_to_file(
+ pdf_state *state,
+ const char *text)
{
fputs(text, state->fp);
state->pdf_file_pos += strlen(text);
}
-static void pdf_write_buf_to_file(pdf_state *state, pdf_buffer *buf)
-{
- char tmp[40];
- buf->pdf_file_pos = state->pdf_file_pos;
- if (buf->is_obj) {
- snprintf(tmp, sizeof(tmp), "%d 0 obj\n", buf->id);
- pdf_write_string_to_file(state, tmp);
- }
- if (buf->is_dict)
- pdf_write_string_to_file(state, "<<\n");
- if (buf->is_stream) {
- snprintf(tmp, sizeof(tmp), "<< /Length %d >>\n", buf->current_size);
- pdf_write_string_to_file(state, tmp);
- pdf_write_string_to_file(state, "stream\n");
- }
- fwrite(buf->data, 1, buf->current_size, state->fp);
- state->pdf_file_pos += buf->current_size;
- if (buf->is_stream)
- pdf_write_string_to_file(state, "endstream\n");
- if (buf->is_dict)
- pdf_write_string_to_file(state, ">>\n");
- if (buf->is_obj)
- pdf_write_string_to_file(state, "endobj\n");
-}
-
-static void pdf_write_to_file(pdf_state *state)
-{
- pdf_buffer *buf = state->first_buffer;
- int xref_pos;
- state->pdf_file_pos = 0;
- pdf_write_buf_to_file(state, &state->pdf_header);
- while (buf) {
- if (buf->is_obj)
- pdf_write_buf_to_file(state, buf);
- buf = buf->next_buffer;
- }
- xref_pos = state->pdf_file_pos;
- fprintf(state->fp, "xref\n");
- fprintf(state->fp, "%d %d\n", 0, state->last_obj_id + 1);
- /* TOC lines must be exactly 20 bytes including \n */
- fprintf(state->fp, "%010d %05d f\x20\n", 0, 65535);
- for (buf = state->first_buffer; buf; buf = buf->next_buffer) {
+static void pdf_write_buf_to_file(
+ pdf_state *state,
+ pdf_buffer *buf)
+{
+ char tmp[40];
+
+ buf->pdf_file_pos = state->pdf_file_pos;
+ if (buf->is_obj) {
+ snprintf(tmp, sizeof(tmp), "%d 0 obj\n", buf->id);
+ pdf_write_string_to_file(state, tmp);
+ }
+ if (buf->is_dict)
+ pdf_write_string_to_file(state, "<<\n");
+ if (buf->is_stream) {
+ snprintf(tmp, sizeof(tmp), "<< /Length %d >>\n", buf->current_size);
+ pdf_write_string_to_file(state, tmp);
+ pdf_write_string_to_file(state, "stream\n");
+ }
+ fwrite(buf->data, 1, buf->current_size, state->fp);
+ state->pdf_file_pos += buf->current_size;
+ if (buf->is_stream)
+ pdf_write_string_to_file(state, "endstream\n");
+ if (buf->is_dict)
+ pdf_write_string_to_file(state, ">>\n");
if (buf->is_obj)
- fprintf(state->fp, "%010d %05d n\x20\n", buf->pdf_file_pos, 0);
- }
- fprintf(state->fp, "trailer\n");
- fprintf(state->fp, "<<\n");
- fprintf(state->fp, "\t/Size %d\n", state->last_obj_id + 1);
- fprintf(state->fp, "\t/Root %d 0 R\n", state->catalog_obj.id);
- fprintf(state->fp, ">>\n");
- fprintf(state->fp, "startxref\n");
- fprintf(state->fp, "%d\n", xref_pos);
- fputs("%%EOF\n", state->fp);
-}
-
-static void pdf_free_resources(pdf_state *state)
-{
- pdf_buffer *buf = state->first_buffer;
- while (buf) {
- free(buf->data);
- buf->data = NULL;
- buf->alloc_size = buf->current_size = 0;
- buf = buf->next_buffer;
- }
- while (state->font_list) {
- pdf_font *next = state->font_list->next;
- free(state->font_list);
- state->font_list = next;
- }
-}
-
-int gfx_render_pdf (gfx_canvas_t *canvas,
- art_u32 width, art_u32 height,
- gfx_color_t background, FILE *fp){
- struct pdf_state state;
- memset(&state, 0, sizeof(pdf_state));
- state.fp = fp;
- state.canvas = canvas;
- state.page_width = width;
- state.page_height = height;
- state.font_id = -1;
- state.font_size = -1;
- state.font_list = NULL;
- state.linecap = -1;
- state.linejoin = -1;
- pdf_init_document(&state);
- /*
- pdf_set_color(&state, background);
- fprintf(fp, "0 0 M 0 %d L %d %d L %d 0 L fill\n",
- height, width, height, width);
- */
- if (!state.has_failed)
- pdf_write_content(&state);
- if (!state.has_failed)
- pdf_setup_document(&state);
- if (!state.has_failed)
- pdf_write_to_file(&state);
- pdf_free_resources(&state);
- return state.has_failed ? -1 : 0;
+ pdf_write_string_to_file(state, "endobj\n");
}
+static void pdf_write_to_file(
+ pdf_state *state)
+{
+ pdf_buffer *buf = state->first_buffer;
+ int xref_pos;
+
+ state->pdf_file_pos = 0;
+ pdf_write_buf_to_file(state, &state->pdf_header);
+ while (buf) {
+ if (buf->is_obj)
+ pdf_write_buf_to_file(state, buf);
+ buf = buf->next_buffer;
+ }
+ xref_pos = state->pdf_file_pos;
+ fprintf(state->fp, "xref\n");
+ fprintf(state->fp, "%d %d\n", 0, state->last_obj_id + 1);
+ /* TOC lines must be exactly 20 bytes including \n */
+ fprintf(state->fp, "%010d %05d f\x20\n", 0, 65535);
+ for (buf = state->first_buffer; buf; buf = buf->next_buffer) {
+ if (buf->is_obj)
+ fprintf(state->fp, "%010d %05d n\x20\n", buf->pdf_file_pos, 0);
+ }
+ fprintf(state->fp, "trailer\n");
+ fprintf(state->fp, "<<\n");
+ fprintf(state->fp, "\t/Size %d\n", state->last_obj_id + 1);
+ fprintf(state->fp, "\t/Root %d 0 R\n", state->catalog_obj.id);
+ fprintf(state->fp, "\t/Info %d 0 R\n", state->info_obj.id);
+ fprintf(state->fp, ">>\n");
+ fprintf(state->fp, "startxref\n");
+ fprintf(state->fp, "%d\n", xref_pos);
+ fputs("%%EOF\n", state->fp);
+}
+
+static void pdf_free_resources(
+ pdf_state *state)
+{
+ pdf_buffer *buf = state->first_buffer;
+
+ while (buf) {
+ free(buf->data);
+ buf->data = NULL;
+ buf->alloc_size = buf->current_size = 0;
+ buf = buf->next_buffer;
+ }
+ while (state->font_list) {
+ pdf_font *next = state->font_list->next;
+
+ free(state->font_list);
+ state->font_list = next;
+ }
+}
+
+int gfx_render_pdf(
+ gfx_canvas_t *canvas,
+ art_u32 width,
+ art_u32 height,
+ gfx_color_t UNUSED(background),
+ FILE * fp)
+{
+ struct pdf_state state;
+
+ memset(&state, 0, sizeof(pdf_state));
+ state.fp = fp;
+ state.canvas = canvas;
+ state.page_width = width;
+ state.page_height = height;
+ state.font_id = -1;
+ state.font_size = -1;
+ state.font_list = NULL;
+ state.linecap = -1;
+ state.linejoin = -1;
+ pdf_init_document(&state);
+ /*
+ pdf_set_color(&state, background);
+ fprintf(fp, "0 0 M 0 %d L %d %d L %d 0 L fill\n",
+ height, width, height, width);
+ */
+ if (!state.has_failed)
+ pdf_write_content(&state);
+ if (!state.has_failed)
+ pdf_setup_document(&state);
+ if (!state.has_failed)
+ pdf_write_to_file(&state);
+ pdf_free_resources(&state);
+ return state.has_failed ? -1 : 0;
+}
projects / rrdtool.git / blobdiff