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raw | patch | inline | side by side (parent: 09565c6)
raw | patch | inline | side by side (parent: 09565c6)
| author | oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa> | |
| Sun, 26 Oct 2003 19:29:56 +0000 (19:29 +0000) | ||
| committer | oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa> | |
| Sun, 26 Oct 2003 19:29:56 +0000 (19:29 +0000) |
| program/src/rrd_gfx.c | patch | blob | history | |
| program/src/rrd_gfx.h | patch | blob | history | |
| program/src/rrd_graph.c | patch | blob | history |
diff --git a/program/src/rrd_gfx.c b/program/src/rrd_gfx.c
index 28007cdee76feb1e327a6cccfb8b18b36b838e86..103f2132f6c67f643462e59265f6b6078351a7c6 100644 (file)
--- a/program/src/rrd_gfx.c
+++ b/program/src/rrd_gfx.c
#include <png.h>
#include <ft2build.h>
#include FT_FREETYPE_H
+#include FT_GLYPH_H
#include "rrd_gfx.h"
#include "rrd_afm.h"
/* lines are better drawn on the pixle than between pixles */
#define LINEOFFSET 0.5
+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;
+ size_t 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 ( FT_Face face,
+ const char *text, int rotation);
+
+/* 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);
enum gfx_v_align_en v_align,
char* text){
gfx_node_t *node = gfx_new_node(canvas,GFX_TEXT);
- if (angle != 0.0){
+/* if (angle != 0.0){*/
/* currently we only support 0 and 270 */
- angle = 270.0;
- }
+/* angle = 270.0;
+ }*/
node->text = strdup(text);
node->size = size;
}
}
+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){
+ double tabwidth, char* text, int rotation){
switch (canvas->imgformat) {
case IF_PNG:
- return gfx_get_text_width_libart (canvas, start, font, size, tabwidth, text);
+ return gfx_get_text_width_libart (canvas, start, font, size, tabwidth, text, rotation);
case IF_SVG: /* fall through */
case IF_EPS:
case IF_PDF:
double gfx_get_text_width_libart ( gfx_canvas_t *canvas,
double start, char* font, double size,
- double tabwidth, char* text){
+ double tabwidth, char* text, int rotation){
- FT_GlyphSlot slot;
- FT_UInt previous=0;
- FT_UInt glyph_index=0;
- FT_Bool use_kerning;
int error;
+ double text_width=0;
FT_Face face;
FT_Library library=NULL;
- double text_width=0;
+ gfx_string string;
+
FT_Init_FreeType( &library );
error = FT_New_Face( library, font, 0, &face );
if ( error ) return -1;
error = FT_Set_Char_Size(face, size*64,size*64, 100,100);
if ( error ) return -1;
- use_kerning = FT_HAS_KERNING(face);
- slot = face->glyph;
- for(;*text;text++) {
- previous = glyph_index;
- glyph_index = FT_Get_Char_Index( face, *text);
-
- if (use_kerning && previous && glyph_index){
- FT_Vector delta;
- FT_Get_Kerning( face, previous, glyph_index,
- 0, &delta );
- text_width += (double)delta.x / 64.0;
-
- }
- error = FT_Load_Glyph( face, glyph_index, 0 );
- if ( error ) {
- FT_Done_FreeType(library);
- return -1;
- }
- if (! previous) {
- text_width -= (double)slot->metrics.horiBearingX / 64.0; /* add just char width */
- }
- text_width += (double)slot->metrics.horiAdvance / 64.0;
- }
- text_width -= (double)slot->metrics.horiAdvance / 64.0; /* remove last step */
- text_width += (double)slot->metrics.width / 64.0; /* add just char width */
- text_width += (double)slot->metrics.horiBearingX / 64.0; /* add just char width */
+ string = gfx_string_create( face, text, rotation);
+ text_width = string->width;
+ gfx_string_destroy(string);
FT_Done_FreeType(library);
- return text_width;
+ return text_width/64;
}
-
+
static void gfx_libart_close_path(gfx_canvas_t *canvas,
gfx_node_t *node, ArtVpath **vec)
{
}
}
+/* 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(FT_Face face,const char *text,
+ int rotation)
+{
+
+ FT_GlyphSlot slot = face->glyph; /* a small shortcut */
+ FT_Bool use_kerning;
+ FT_UInt previous;
+ FT_Vector ft_pen;
+
+ gfx_string string;
+ gfx_char glyph; /* current glyph in table */
+ unsigned int n;
+ int error;
+
+ ft_pen.x = 0; /* start at (0,0) !! */
+ ft_pen.y = 0;
+
+ string = (gfx_string) malloc (sizeof(struct gfx_string_s));
+ string->width = 0;
+ string->height = 0;
+ string->count = strlen (text);
+ string->glyphs = (gfx_char) calloc (string->count,sizeof(struct gfx_char_s));
+ string->num_glyphs = 0;
+ string->transform.xx = (FT_Fixed)( cos(M_PI*(rotation)/180.0)*0x10000);
+ string->transform.xy = (FT_Fixed)(-sin(M_PI*(rotation)/180.0)*0x10000);
+ string->transform.yx = (FT_Fixed)( sin(M_PI*(rotation)/180.0)*0x10000);
+ string->transform.yy = (FT_Fixed)( cos(M_PI*(rotation)/180.0)*0x10000);
+
+ use_kerning = FT_HAS_KERNING(face);
+ previous = 0;
+ glyph = string->glyphs;
+ for (n=0; n<string->count; n++, glyph++) {
+ FT_Vector vec;
+
+ /* initialize each struct gfx_char_s */
+ glyph->index = 0;
+ glyph->pos.x = 0;
+ glyph->pos.y = 0;
+ glyph->image = NULL;
+
+ glyph->index = FT_Get_Char_Index( face, text[n] );
+
+ /* compute glyph origin */
+ if ( use_kerning && previous && glyph->index ) {
+ FT_Vector kerning;
+ FT_Get_Kerning (face, previous, glyph->index,
+ ft_kerning_default, &kerning);
+ ft_pen.x += kerning.x;
+ ft_pen.y += kerning.y;
+ }
+
+ /* store current pen position */
+ glyph->pos.x = ft_pen.x;
+ glyph->pos.y = ft_pen.y;
+
+ /* load the glyph image (in its native format) */
+ /* for now, we take a monochrome glyph bitmap */
+ error = FT_Load_Glyph (face, glyph->index, FT_LOAD_DEFAULT);
+ if (error) {
+ fprintf (stderr, "couldn't load glyph: %c\n", text[n]);
+ continue;
+ }
+ error = FT_Get_Glyph (slot, &glyph->image);
+ if (error) {
+ fprintf (stderr, "couldn't get glyph from slot: %c\n", text[n]);
+ continue;
+ }
+
+ 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) {
+ fprintf (stderr, "couldn't transform glyph\n");
+ continue;
+ }
+
+ /* convert to a bitmap - destroy native image */
+ error = FT_Glyph_To_Bitmap (&glyph->image, ft_render_mode_normal, 0, 1);
+ if (error) {
+ fprintf (stderr, "couldn't convert glyph to bitmap\n");
+ continue;
+ }
+
+ /* increment number of glyphs */
+ previous = glyph->index;
+ string->num_glyphs++;
+ }
+/* printf ("number of glyphs = %d\n", string->num_glyphs);*/
+ compute_string_bbox( string );
+ string->width = string->bbox.xMax - string->bbox.xMin;
+ string->height = string->bbox.yMax - string->bbox.yMin;
+
+ return string;
+}
+
+
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){
break;
}
case GFX_TEXT: {
+ unsigned int n;
int error;
- float text_width=0.0, text_height = 0.0;
- unsigned char *text;
art_u8 fcolor[3],falpha;
FT_Face face;
- FT_GlyphSlot slot;
- FT_UInt previous=0;
- FT_UInt glyph_index=0;
- FT_Bool use_kerning;
+ gfx_char glyph;
+ gfx_string string;
+ FT_Vector vec; /* 26.6 */
float pen_x = 0.0 , pen_y = 0.0;
/* double x,y; */
0,
&face );
if ( error ) break;
- use_kerning = FT_HAS_KERNING(face);
error = FT_Set_Char_Size(face, /* handle to face object */
(long)(node->size*64),
if ( error ) break;
pen_x = node->x * canvas->zoom;
pen_y = node->y * canvas->zoom;
- slot = face->glyph;
-
- for(text=(unsigned char *)node->text;*text;text++) {
- previous = glyph_index;
- glyph_index = FT_Get_Char_Index( face, *text);
-
- if (use_kerning && previous && glyph_index){
- FT_Vector delta;
- FT_Get_Kerning( face, previous, glyph_index,
- 0, &delta );
- text_width += (double)delta.x / 64.0;
-
- }
- error = FT_Load_Glyph( face, glyph_index, 0 );
- if ( error ) break;
- if (previous == 0){
- pen_x -= (double)slot->metrics.horiBearingX / 64.0; /* adjust pos for first char */
- text_width -= (double)slot->metrics.horiBearingX / 64.0; /* add just char width */
- }
- if ( text_height < (double)slot->metrics.horiBearingY / 64.0 ) {
- text_height = (double)slot->metrics.horiBearingY / 64.0;
- }
- text_width += (double)slot->metrics.horiAdvance / 64.0;
- }
- text_width -= (double)slot->metrics.horiAdvance / 64.0; /* remove last step */
- text_width += (double)slot->metrics.width / 64.0; /* add just char width */
- text_width += (double)slot->metrics.horiBearingX / 64.0; /* add just char width */
-
+
+ string = gfx_string_create (face, node->text, node->angle);
switch(node->halign){
- case GFX_H_RIGHT: pen_x -= text_width; break;
- case GFX_H_CENTER: pen_x -= text_width / 2.0; break;
- case GFX_H_LEFT: break;
- case GFX_H_NULL: break;
+ 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: pen_y += text_height; break;
- case GFX_V_CENTER: pen_y += text_height / 2.0; break;
- case GFX_V_BOTTOM: break;
- case GFX_V_NULL: break;
+ 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;
}
-
- glyph_index=0;
- for(text=(unsigned char *)node->text;*text;text++) {
- int gr;
- previous = glyph_index;
- glyph_index = FT_Get_Char_Index( face, *text);
-
- if (use_kerning && previous && glyph_index){
- FT_Vector delta;
- FT_Get_Kerning( face, previous, glyph_index,
- 0, &delta );
- pen_x += (double)delta.x / 64.0;
-
+ pen_x += vec.x/64;
+ pen_y += vec.y/64;
+ glyph = string->glyphs;
+ for(n=0; n<string->num_glyphs; ++n, ++glyph) {
+ int gr;
+ FT_Glyph image;
+ FT_BitmapGlyph bit;
+
+ /* make copy to transform */
+ if (! glyph->image) {
+ fprintf (stderr, "no image\n");
+ continue;
+ }
+ error = FT_Glyph_Copy (glyph->image, &image);
+ if (error) {
+ fprintf (stderr, "couldn't copy image\n");
+ continue;
}
- error = FT_Load_Glyph( face, glyph_index, FT_LOAD_RENDER );
- if ( error ) break;
- gr = slot->bitmap.num_grays -1;
- for (iy=0; iy < slot->bitmap.rows; iy++){
- long buf_y = iy+(pen_y+0.5)-slot->bitmap_top;
+
+ /* transform it */
+ vec = glyph->pos;
+ FT_Vector_Transform (&vec, &string->transform);
+
+ bit = (FT_BitmapGlyph) image;
+
+ gr = bit->bitmap.num_grays -1;
+ for (iy=0; iy < bit->bitmap.rows; iy++){
+ long buf_y = iy+(pen_y+0.5)-bit->top;
if (buf_y < 0 || buf_y >= pys_height) continue;
buf_y *= rowstride;
- for (ix=0;ix < slot->bitmap.width;ix++){
- long buf_x = ix + (pen_x + 0.5) + (double)slot->bitmap_left ;
+ for (ix=0;ix < bit->bitmap.width;ix++){
+ long buf_x = ix + (pen_x + 0.5) + (double)bit->left ;
art_u8 font_alpha;
if (buf_x < 0 || buf_x >= pys_width) continue;
buf_x *= bytes_per_pixel ;
- font_alpha = *(slot->bitmap.buffer + iy * slot->bitmap.width + ix);
+ 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;
}
}
}
- pen_x += (double)slot->metrics.horiAdvance / 64.0;
+ FT_Done_Glyph (image);
}
+ gfx_string_destroy(string);
}
}
node = node->next;
diff --git a/program/src/rrd_gfx.h b/program/src/rrd_gfx.h
index 81020adb44cb140efa662feab80a5fdfb7547259..dafd7d061443cdd656761b7a3be7b47fbf49e8f2 100644 (file)
--- a/program/src/rrd_gfx.h
+++ b/program/src/rrd_gfx.h
double zoom; /* zoom for graph */
} gfx_canvas_t;
-
gfx_canvas_t *gfx_new_canvas (void);
/* create a new line */
/* measure width of a text string */
double gfx_get_text_width ( gfx_canvas_t *canvas,
double start, char* font, double size,
- double tabwidth, char* text);
+ double tabwidth, char* text, int rotation);
/* save image to file */
int gfx_render (gfx_canvas_t *canvas,
gfx_color_t background, FILE *fo);
double gfx_get_text_width_libart ( gfx_canvas_t *canvas,
double start, char* font, double size,
- double tabwidth, char* text);
+ double tabwidth, char* text, int rotation);
/* SVG support */
int gfx_render_svg (gfx_canvas_t *canvas,
index 2d08b10f18fd957ed819aa74ed00dc85c7d1bb3e..ef3c727135411d773f9054c3eea3ec8481a04518 100644 (file)
--- a/program/src/rrd_graph.c
+++ b/program/src/rrd_graph.c
#ifndef RRD_DEFAULT_FONT
#ifndef WIN32
-#define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf"
+#define RRD_DEFAULT_FONT "VeraMono.ttf"
+/* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/openoffice/ariosor.ttf" */
/* #define RRD_DEFAULT_FONT "/usr/share/fonts/truetype/Arial.ttf" */
#endif
#endif
im->text_prop[TEXT_PROP_LEGEND].font,
im->text_prop[TEXT_PROP_LEGEND].size,
im->tabwidth,
- im->gdes[i].legend);
+ im->gdes[i].legend, 0);
leg_c++;
} else {
legspace[i]=0;
im->text_prop[TEXT_PROP_LEGEND].font,
im->text_prop[TEXT_PROP_LEGEND].size,
im->tabwidth,
- im->gdes[ii].legend)
+ im->gdes[ii].legend, 0)
+ legspace[ii]
+ glue;
if (im->gdes[ii].gf != GF_GPRINT &&
}
/* yaxis description */
- if (im->canvas->imgformat != IF_PNG) {
+/* if (im->canvas->imgformat != IF_PNG) {*/
+ if (1) {
gfx_new_text( im->canvas,
7, (im->yorigin - im->ysize/2),
im->graph_col[GRC_FONT],
im->text_prop[TEXT_PROP_AXIS].font,
im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
- GFX_H_CENTER, GFX_V_CENTER,
+ GFX_H_LEFT, GFX_V_CENTER,
im->ylegend);
} else {
/* horrible hack until we can actually print vertically */
for (n=0;n<strlen(im->ylegend);n++) {
s[0]=im->ylegend[n];
s[1]='\0';
- gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(l-n),
+ gfx_new_text(im->canvas,7,im->text_prop[TEXT_PROP_AXIS].size*(n+1),
im->graph_col[GRC_FONT],
im->text_prop[TEXT_PROP_AXIS].font,
im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 270.0,
boxH = gfx_get_text_width(im->canvas, 0,
im->text_prop[TEXT_PROP_AXIS].font,
im->text_prop[TEXT_PROP_AXIS].size,
- im->tabwidth,"M") * 1.25;
+ im->tabwidth,"M", 0) * 1.25;
boxV = boxH;
node = gfx_new_area(im->canvas,
im->text_prop[TEXT_PROP_TITLE].font,
im->text_prop[TEXT_PROP_TITLE].size,
im->tabwidth,
- im->title) + 2*Xspacing;
+ im->title, 0) + 2*Xspacing;
Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2;
}