/****************************************************************************
- * RRDtool 1.2.23 Copyright by Tobi Oetiker, 1997-2007
+ * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
****************************************************************************
* rrd_gfx.c graphics wrapper for rrdtool
**************************************************************************/
# define RRDPRINTF(...)
# endif /* DEBUG */
#endif /* _MSC_VER */
-#include "rrd_tool.h"
-#include <png.h>
-#include <ft2build.h>
-#include FT_FREETYPE_H
-#include FT_GLYPH_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 */
-};
-
-typedef struct gfx_string_s *gfx_string;
-struct gfx_string_s {
- 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);
-
-/* create a freetype glyph string */
-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
-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);
+#include "rrd_tool.h"
+#include "rrd_graph.h"
- canvas->firstnode = NULL;
- canvas->lastnode = NULL;
- canvas->imgformat = IF_PNG; /* we default to PNG output */
- canvas->interlaced = 0;
- canvas->zoom = 1.0;
- 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,
+void gfx_line(
+ image_desc_t *im,
double X0,
double Y0,
double X1,
double width,
gfx_color_t color)
{
- return gfx_new_dashed_line(canvas, X0, Y0, X1, Y1, width, color, 0, 0);
+ gfx_dashed_line(im, X0, Y0, X1, Y1, width, color, 0, 0);
}
-gfx_node_t *gfx_new_dashed_line(
- gfx_canvas_t * canvas,
+void gfx_dashed_line(
+ image_desc_t *im,
double X0,
double Y0,
double X1,
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;
+ cairo_t *cr = im->cr;
+ double dashes[2];
+ double x = 0;
+ double y = 0;
+
+ dashes[0] = dash_on;
+ dashes[1] = dash_off;
+
+ cairo_save(cr);
+ cairo_new_path(cr);
+ cairo_set_line_width(cr, width);
+ gfx_line_fit(im, &x, &y);
+ gfx_line_fit(im, &X0, &Y0);
+ cairo_move_to(cr, X0, Y0);
+ gfx_line_fit(im, &X1, &Y1);
+ cairo_line_to(cr, X1, Y1);
+ if (dash_on > 0 || dash_off > 0)
+ cairo_set_dash(cr, dashes, 2, x);
+ cairo_set_source_rgba(cr, color.red, color.green, color.blue,
+ color.alpha);
+ cairo_stroke(cr);
+ cairo_restore(cr);
}
/* create a new area */
-gfx_node_t *gfx_new_area(
- gfx_canvas_t * canvas,
+void gfx_new_area(
+ image_desc_t *im,
double X0,
double Y0,
double X1,
double Y2,
gfx_color_t color)
{
+ cairo_t *cr = im->cr;
- 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;
+ cairo_new_path(cr);
+ gfx_area_fit(im, &X0, &Y0);
+ cairo_move_to(cr, X0, Y0);
+ gfx_area_fit(im, &X1, &Y1);
+ cairo_line_to(cr, X1, Y1);
+ gfx_area_fit(im, &X2, &Y2);
+ cairo_line_to(cr, X2, Y2);
+ cairo_set_source_rgba(cr, color.red, color.green, color.blue,
+ color.alpha);
}
/* add a point to a line or to an area */
-int gfx_add_point(
- gfx_node_t * node,
+void gfx_add_point(
+ image_desc_t *im,
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;
+ cairo_t *cr = im->cr;
- 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);
+ gfx_area_fit(im, &x, &y);
+ cairo_line_to(cr, x, y);
+}
- } else {
- /* can only add point to areas and lines */
- return 1;
- }
- return 0;
+/* add a point to a line or to an area */
+void gfx_add_rect_fadey(
+ image_desc_t *im,
+ double x1,double y1,
+ double x2,double y2,
+ double py,
+ gfx_color_t color1,
+ gfx_color_t color2,
+ double height)
+{
+ cairo_t *cr = im->cr;
+
+ cairo_new_path(cr);
+ gfx_area_fit(im, &x1, &y1);
+ gfx_area_fit(im, &x2, &y2);
+ cairo_line_to(cr, x1, y1);
+ cairo_line_to(cr, x1, y2);
+ cairo_line_to(cr, x2, y2);
+ cairo_line_to(cr, x2, y1);
+ cairo_close_path(cr);
+ cairo_pattern_t* p;
+ if (height < 0) {
+ p = cairo_pattern_create_linear(x1,y1,x2,y1+height);
+ } else if (height > 0) {
+ p = cairo_pattern_create_linear(x1,(y2+py)/2+height,x2,(y2+py)/2);
+ } else {
+ p = cairo_pattern_create_linear(x1,y1,x2,(y2+py)/2);
+ }
+ //cairo_pattern_t* p = cairo_pattern_create_linear(x1,py+50,x2,py);
+ cairo_pattern_add_color_stop_rgba(p, 1, color1.red,color1.green,color1.blue,color1.alpha);
+ cairo_pattern_add_color_stop_rgba(p, 0, color2.red,color2.green,color2.blue,color2.alpha);
+ cairo_set_source(cr, p);
+ cairo_pattern_destroy(p);
+ cairo_fill(cr);
}
void gfx_close_path(
- gfx_node_t * node)
+ image_desc_t *im)
{
- node->closed_path = 1;
- if (node->path[0].code == ART_MOVETO_OPEN)
- node->path[0].code = ART_MOVETO;
+ cairo_t *cr = im->cr;
+
+ cairo_close_path(cr);
+ cairo_fill(cr);
}
/* create a text node */
-gfx_node_t *gfx_new_text(
- gfx_canvas_t * canvas,
+static PangoLayout *gfx_prep_text(
+ image_desc_t *im,
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);
- }
-#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 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)
-{
- unsigned int n;
- 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;
- }
- 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(
- gfx_canvas_t * canvas,
- FT_Face face,
- const char *text,
- int rotation,
+ PangoFontDescription *font_desc,
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);
-
- string->count = strlen(text);
-#endif
-
- 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;
- }
-
- /* 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;
-
-
- 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);
-
-/* 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)
+ const char *text)
{
+ PangoLayout *layout = im->layout;
+ const PangoFontDescription *pfd;
+ cairo_t *cr = im->cr;
+ static double last_tabwidth = -1;
- 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 = 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:{
- 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(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);
- /* 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);
- /* 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[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;
-
- 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) {
- 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(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;
- }
- 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;
-
- /* long buf_x,comp_n; */
- /* make copy to transform */
- if (!glyph->image) {
- RRDPRINTF("no image\n")
- continue;
- }
- error = FT_Glyph_Copy(glyph->image, &image);
- if (error) {
- RRDPRINTF("couldn't copy image\n")
- continue;
- }
- /* transform it */
- vec = glyph->pos;
- 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;
+ /* for performance reasons we might
+ want todo that only once ... tabs will always
+ be the same */
+ long i;
+ long tab_count = strlen(text);
+ long tab_shift = fmod(x, tabwidth);
+ int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
+
+ gchar *utf8_text;
- 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;
- }
-
-/*
- 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.width + ix);
- font_alpha = (art_u8)((double)font_alpha / gr * falpha);
- for (iz = 0; iz < 3; iz++){
- art_u8 *orig = buffer + buf_y + buf_x + iz;
- *orig = (art_u8)((double)*orig / gr * ( gr - font_alpha) +
- (double)fcolor[iz] / gr * (font_alpha));
- }
- }
- }
-*/
- FT_Done_Glyph(image);
- }
- gfx_string_destroy(string);
+ if (last_tabwidth < 0 || last_tabwidth != tabwidth){
+ PangoTabArray *tab_array;
+ // fprintf(stderr,"t");
+ last_tabwidth = tabwidth;
+ tab_array = pango_tab_array_new(tab_count, (gboolean) (1));
+ for (i = 1; i <= tab_count; i++) {
+ pango_tab_array_set_tab(tab_array,
+ i, PANGO_TAB_LEFT,
+ tabwidth * i - tab_shift + border);
}
- }
- node = node->next;
- }
- gfx_save_png(buffer, fp, pys_width, pys_height, bytes_per_pixel);
- art_free(buffer);
- 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);
- 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);
+ pango_layout_set_tabs(layout, tab_array);
+ pango_tab_array_free(tab_array);
}
+ pfd = pango_layout_get_font_description(layout);
- 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);
+ if (!pfd || !pango_font_description_equal (pfd,font_desc)){
+ pango_layout_set_font_description(layout, font_desc);
+ }
+// fprintf(stderr,"%s\n",pango_font_description_to_string(pango_layout_get_font_description(layout)));
- /* 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); */
+ cairo_new_path(cr);
+ cairo_set_source_rgba(cr, color.red, color.green, color.blue,
+ color.alpha);
+/* layout = pango_cairo_create_layout(cr); */
- /* 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;
-}
+// pango_cairo_context_set_font_options(pango_context, im->font_options);
+// pango_cairo_context_set_resolution(pango_context, 100);
+/* pango_cairo_update_context(cr, pango_context); */
-/* ----- 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
+ /* pango expects the string to be utf-8 encoded */
+ utf8_text = g_locale_to_utf8((const gchar *) text, -1, NULL, NULL, NULL);
-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;
+ /* In case of an error, i.e. utf8_text == NULL (locale settings messed
+ * up?), we fall back to a possible "invalid UTF-8 string" warning instead
+ * of provoking a failed assertion in libpango. */
+ if (im->with_markup)
+ pango_layout_set_markup(layout, utf8_text ? utf8_text : text, -1);
+ else
+ pango_layout_set_text(layout, utf8_text ? utf8_text : text, -1);
-#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);
+ g_free(utf8_text);
+ return layout;
}
-#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)
+/* Size Text Node */
+double gfx_get_text_width(
+ image_desc_t *im,
+ double start,
+ PangoFontDescription *font_desc,
+ double tabwidth,
+ char *text)
{
- 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;
+ PangoLayout *layout;
+ PangoRectangle log_rect;
+ gfx_color_t color = { 0, 0, 0, 0 };
+ layout = gfx_prep_text(im, start, color, font_desc, tabwidth, text);
+ pango_layout_get_pixel_extents(layout, NULL, &log_rect);
+/* g_object_unref(layout); */
+ return log_rect.width;
}
-
-static void pdf_calc(
- int page_height,
- gfx_node_t * node,
- pdf_coords * g)
+void gfx_text(
+ image_desc_t *im,
+ double x,
+ double y,
+ gfx_color_t color,
+ PangoFontDescription *font_desc,
+ double tabwidth,
+ double angle,
+ enum gfx_h_align_en h_align,
+ enum gfx_v_align_en v_align,
+ const char *text)
{
- 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) {
+ PangoLayout *layout;
+ PangoRectangle log_rect;
+ cairo_t *cr = im->cr;
+ double sx = 0;
+ double sy = 0;
+
+ cairo_save(cr);
+ cairo_translate(cr, x, y);
+/* gfx_line(cr,-2,0,2,0,1,color);
+ gfx_line(cr,0,-2,0,2,1,color); */
+ layout = gfx_prep_text(im, x, color, font_desc, tabwidth, text);
+ pango_layout_get_pixel_extents(layout, NULL, &log_rect);
+ cairo_rotate(cr, -angle * G_PI / 180.0);
+ sx = log_rect.x;
+ switch (h_align) {
case GFX_H_RIGHT:
- g->tdx = -g->maxp.x;
+ sx -= log_rect.width;
break;
case GFX_H_CENTER:
- g->tdx = -(g->maxp.x + g->minp.x) / 2;
+ sx -= log_rect.width / 2;
break;
case GFX_H_LEFT:
- g->tdx = -g->minp.x;
break;
case GFX_H_NULL:
- g->tdx = 0;
break;
}
- switch (node->valign) {
+ sy = log_rect.y;
+ switch (v_align) {
case GFX_V_TOP:
- g->tdy = -g->maxp.y;
break;
case GFX_V_CENTER:
- g->tdy = -(g->maxp.y + g->minp.y) / 2;
+ sy -= log_rect.height / 2;
break;
case GFX_V_BOTTOM:
- g->tdy = -g->minp.y;
+ sy -= log_rect.height;
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 = "-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);
- }
-}
+ pango_cairo_update_layout(cr, layout);
+ cairo_move_to(cr, sx, sy);
+ pango_cairo_show_layout(cr, layout);
+/* g_object_unref(layout); */
+ cairo_restore(cr);
-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)
+/* convert color */
+struct gfx_color_t gfx_hex_to_col(
+ long unsigned int color)
{
- putc('>', fp);
- if (!svg_single_line)
- putc('\n', fp);
-}
+ struct gfx_color_t gfx_color;
-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);
+ gfx_color.red = 1.0 / 255.0 * ((color & 0xff000000) >> (3 * 8));
+ gfx_color.green = 1.0 / 255.0 * ((color & 0x00ff0000) >> (2 * 8));
+ gfx_color.blue = 1.0 / 255.0 * ((color & 0x0000ff00) >> (1 * 8));
+ gfx_color.alpha = 1.0 / 255.0 * (color & 0x000000ff);
+ return gfx_color;
}
-static void svg_close_tag_empty_node(
- FILE * fp)
-{
- svg_end_tag(fp, NULL);
-}
+/* gridfit_lines */
-static void svg_write_text(
- FILE * fp,
- const char *text)
+void gfx_line_fit(
+ image_desc_t *im,
+ double *x,
+ double *y)
{
-#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;
+ cairo_t *cr = im->cr;
+ double line_width;
+ double line_height;
- if (!p)
+ if (!im->gridfit)
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);
- }
- }
+ cairo_user_to_device(cr, x, y);
+ line_width = cairo_get_line_width(cr);
+ line_height = line_width;
+ cairo_user_to_device_distance(cr, &line_width, &line_height);
+ line_width = line_width / 2.0 - ceil(line_width / 2.0);
+ line_height = line_height / 2.0 - ceil(line_height / 2.0);
+ *x = floor(*x - 0.5) - line_width;
+ *y = ceil(*y + 0.5) + line_height;
+ cairo_device_to_user(cr, x, y);
}
-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, " opacity=\"");
- svg_write_number(fp, opacity / 255.0);
- fputs("\"", fp);
- }
-}
+/* gridfit_areas */
-static void svg_get_dash(
- gfx_node_t * node,
- svg_dash * d)
+void gfx_area_fit(
+ image_desc_t *im,
+ double *x,
+ double *y)
{
- double offset;
- int mult;
+ cairo_t *cr = im->cr;
- if (node->dash_on <= 0 || node->dash_off <= 0) {
- d->dash_enable = 0;
+ if (!im->gridfit)
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;
-}
-
-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);
- 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)
-{
- 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 -------
- EPS and Postscript references:
- http://partners.adobe.com/asn/developer/technotes/postscript.html
-*/
-
-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;
- /*--*/
- 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)
-{
-#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("F\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(") ", 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;
-}
-
-/* ------- PDF -------
- PDF references page:
- 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;
-} pdf_buffer;
-
-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;
- /*--*/
- 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 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)
-{
- 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)
-{
- 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_char(
- pdf_buffer * buf,
- char c)
-{
- 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);
- }
-}
-
-static void pdf_puts(
- pdf_buffer * buf,
- const char *text)
-{
- pdf_put(buf, text, strlen(text));
-}
-
-static void pdf_indent(
- pdf_buffer * buf)
-{
- pdf_puts(buf, "\t");
-}
-
-static void pdf_putsi(
- pdf_buffer * buf,
- const char *text)
-{
- pdf_indent(buf);
- pdf_puts(buf, text);
-}
-
-static void pdf_putint(
- pdf_buffer * buf,
- int i)
-{
- char tmp[20];
-
- sprintf(tmp, "%d", i);
- pdf_puts(buf, tmp);
-}
-
-static void pdf_putnumber(
- pdf_buffer * buf,
- double d)
-{
- char tmp[50];
-
- svg_format_number(tmp, sizeof(tmp), d);
- pdf_puts(buf, tmp);
-}
-
-static void pdf_put_string_contents_wide(
- pdf_buffer * buf,
- const afm_char * text)
-{
- 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_put_string_contents(
- pdf_buffer * buf,
- const char *text)
-{
-#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_init_dict(
- pdf_state * state,
- pdf_buffer * buf)
-{
- pdf_init_object(state, buf);
- buf->is_dict = 1;
-}
-
-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)
-{
- 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_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, 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) {
- 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;
+ cairo_user_to_device(cr, x, y);
+ *x = floor(*x);
+ *y = ceil(*y);
+ cairo_device_to_user(cr, x, y);
}
projects / rrdtool.git / blobdiff