/****************************************************************************
- * RRDtool 1.2.2 Copyright by Tobi Oetiker, 1997-2005
+ * RRDtool 1.2.9 Copyright by Tobi Oetiker, 1997-2005
****************************************************************************
* rrd_gfx.c graphics wrapper for rrdtool
**************************************************************************/
/* #define DEBUG */
#ifdef DEBUG
-# define DPRINT(x) (void)(printf x, printf("\n"))
+# define DPRINTF(x,...) fprintf(stderr, x, ## __VA_ARGS__);
#else
-# define DPRINT(x)
+# define DPRINTF(x,...)
#endif
#include "rrd_tool.h"
#include <png.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 */
struct gfx_string_s {
unsigned int width;
unsigned int height;
- size_t count; /* number of characters */
+ int count; /* number of characters */
gfx_char glyphs;
size_t num_glyphs;
FT_BBox bbox;
}
double gfx_get_text_width_libart (
- gfx_canvas_t *canvas, double start, char* font, double size,
+ gfx_canvas_t *canvas, double UNUSED(start), char* font, double size,
double tabwidth, char* text, int rotation ){
int error;
FT_UInt previous;
FT_Vector ft_pen;
- gfx_string string;
+ gfx_string string = (gfx_string) malloc (sizeof(struct gfx_string_s));
+
gfx_char glyph; /* current glyph in table */
- unsigned int n;
+ 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){
+ string->count=mbstowcs(cstr,"Enc-Err",6);
+ }
+#else
+ char *cstr = strdup(text);
+ string->count = strlen (text);
+#endif
+
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);
use_kerning = FT_HAS_KERNING(face);
previous = 0;
glyph = string->glyphs;
- for (n=0; n<string->count;glyph++) {
+ 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 char letter = text[n];
+ unsigned int letter = cstr[n];
gottab = 0;
- if (letter == '\\' && n+1 < string->count && text[n+1] == 't'){
+ 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;
glyph->pos.x = 0;
glyph->pos.y = 0;
glyph->image = NULL;
-
glyph->index = FT_Get_Char_Index( face, letter );
/* compute glyph origin */
canvas->aa_type == AA_LIGHT ? FT_LOAD_TARGET_LIGHT :
FT_LOAD_TARGET_MONO : FT_LOAD_TARGET_MONO);
if (error) {
- fprintf (stderr, "couldn't load glyph: %c\n", letter);
+ DPRINTF("couldn't load glyph: %c\n", letter)
continue;
}
error = FT_Get_Glyph (slot, &glyph->image);
if (error) {
- fprintf (stderr, "couldn't get glyph from slot: %c\n", letter);
+ DPRINTF("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
FT_Vector_Transform (&vec, &string->transform);
error = FT_Glyph_Transform (glyph->image, &string->transform, &vec);
if (error) {
- fprintf (stderr, "couldn't transform glyph\n");
+ DPRINTF("couldn't transform glyph id %d\n", letter)
continue;
}
canvas->aa_type == AA_LIGHT ? FT_RENDER_MODE_LIGHT :
FT_RENDER_MODE_MONO : FT_RENDER_MODE_MONO, 0, 1);
if (error) {
- fprintf (stderr, "couldn't convert glyph to bitmap\n");
+ DPRINTF("couldn't convert glyph id %d to bitmap\n", letter)
continue;
}
/* increment number of glyphs */
previous = glyph->index;
string->num_glyphs++;
- n++;
-
}
+ free(cstr);
/* printf ("number of glyphs = %d\n", string->num_glyphs);*/
compute_string_bbox( string );
/* the last character was a tab */
string->width = string->bbox.xMax - string->bbox.xMin;
} */
string->height = string->bbox.yMax - string->bbox.yMin;
-
return string;
}
pen_x += vec.x/64;
pen_y += vec.y/64;
glyph = string->glyphs;
- for(n=0; n<string->num_glyphs; ++n, ++glyph) {
+ 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) {
- fprintf (stderr, "no image\n");
+ DPRINTF("no image\n")
continue;
}
error = FT_Glyph_Copy (glyph->image, &image);
if (error) {
- fprintf (stderr, "couldn't copy image\n");
+ DPRINTF("couldn't copy image\n")
continue;
}
}
+/* ----- 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";
+static const char *svg_default_font = "-dummy-";
typedef struct svg_dash
{
int dash_enable;
}
fputs("\"", fp);
if (opacity != 0xFF) {
- fprintf(fp, " stroke-opacity=\"");
+ fprintf(fp, " opacity=\"");
svg_write_number(fp, opacity / 255.0);
fputs("\"", fp);
}
static void svg_text(FILE *fp, gfx_node_t *node)
{
- double x = node->x - LINEOFFSET;
- double y = node->y - LINEOFFSET;
+ 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");
- 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;
+ /* 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);
}
- 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);
+ 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");
- 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);
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 RRDtool,\n"
-" Tobias Oetiker <tobi@oetike.ch>, http://tobi.oetiker.ch\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"
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:
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",
- (int)((color >> 24) & 255),
- (int)((color >> 16) & 255),
- (int)((color >> 8) & 255));
+ eps_color_calc(color >> 24),
+ eps_color_calc(color >> 16),
+ eps_color_calc(color >> 8));
state->color = color;
}
gfx_node_t *node;
fputs(
"%!PS-Adobe-3.0 EPSF-3.0\n"
- "%%Creator: RRDtool 1.2.2 Tobias Oetiker, http://tobi.oetiker.ch\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"
"/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"
+ "/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"
static void eps_write_text(eps_state *state, gfx_node_t *node)
{
FILE *fp = state->fp;
- const unsigned char *p;
+ const 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;
+ pdf_coords g;
+ 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;
svg_write_number(fp, state->font_size);
fprintf(fp, " SetFont-%s\n", state->font);
}
+ if (node->angle)
+ fputs("T1 ", fp);
fputs("(", fp);
lineLen = 20;
- for (p = (const unsigned char*)node->text; *p; p++) {
- if (lineLen > 70) {
+ p = node->text;
+ while (1) {
+ unsigned char ch = *(unsigned char*)p;
+ if (!ch)
+ break;
+ if (++lineLen > 70) {
fputs("\\\n", fp); /* backslash and \n */
lineLen = 0;
}
- switch (*p) {
+ 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':
- fputc('\\', fp);
- lineLen++;
- /* fall-through */
+ fputs("\\t", fp);
+ break;
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 (ch >= 126 || ch < 32) {
+ fprintf(fp, "\\%03o", ch);
+ lineLen += 3;
+ } else {
+ fputc(ch, fp);
+ }
+ }
+ p++;
}
- 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);
+ 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 {
- svg_write_number(fp, x);
- fputc(' ', fp);
- svg_write_number(fp, y);
- fputs(" T", fp);
- fputc(align, fp);
- fputc('\n', fp);
+ fputs(") ", fp);
+ svg_write_number(fp, g.tmx);
+ fputs(" ", fp);
+ svg_write_number(fp, g.tmy);
+ fputs(" T\n", fp);
}
}
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);
/* ------- 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 last_obj_id;
/*--*/
pdf_buffer pdf_header;
- pdf_buffer catalog_obj, pages_obj, page1_obj;
+ pdf_buffer info_obj, catalog_obj, pages_obj, page1_obj;
pdf_buffer fontsdict_obj;
pdf_buffer graph_stream;
} pdf_state;
pdf_puts(buf, tmp);
}
+static void pdf_put_string_contents(pdf_buffer *buf, const char *text)
+{
+ const char *p = text;
+ while (1) {
+ unsigned char ch = *(unsigned char*)p;
+ switch (ch) {
+ case 0: return;
+ case '(':
+ case ')':
+ case '\\':
+ pdf_puts(buf, "\\");
+ pdf_put(buf, p, 1);
+ 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 >= 126 || ch < 32) {
+ char tmp[10];
+ snprintf(tmp, sizeof(tmp), "\\%03o", ch);
+ pdf_puts(buf, tmp);
+ } else {
+ pdf_put(buf, p, 1);
+ }
+ }
+ p++;
+ }
+}
+
static void pdf_init_object(pdf_state *state, pdf_buffer *buf)
{
pdf_init_buffer(state, buf);
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;
- pdf_putnumber(buf, ((color >> 24) & 255) / 255.0);
+#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, ((color >> 16) & 255) / 255.0);
+ pdf_putnumber(buf, pdf_color_calc(color >> 16));
pdf_puts(buf, " ");
- pdf_putnumber(buf, ((color >> 8) & 255) / 255.0);
+ pdf_putnumber(buf, pdf_color_calc(color >> 8));
pdf_puts(buf, " ");
pdf_puts(buf, op);
pdf_puts(buf, "\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)
{
- char tmp[30];
+ pdf_coords g;
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_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 (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)
+ 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;
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);
- pdf_puts(s, " ");
- }
- pdf_putnumber(s, x);
- pdf_puts(s, " ");
- pdf_putnumber(s, y);
+ pdf_write_matrix(state, node, &g, 1);
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_put_string_contents(s, node->text);
pdf_puts(s, ") Tj\n");
- if (!next_is_text)
+ if (PDF_CALC_DEBUG || !next_is_text)
pdf_puts(s, "ET\n");
}
{
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);
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 ");
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);
int gfx_render_pdf (gfx_canvas_t *canvas,
art_u32 width, art_u32 height,
- gfx_color_t background, FILE *fp){
+ gfx_color_t UNUSED(background), FILE *fp){
struct pdf_state state;
memset(&state, 0, sizeof(pdf_state));
state.fp = fp;
projects / rrdtool.git / blobdiff