/****************************************************************************
- * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2003
+ * RRDtool 1.2.x Copyright Tobias Oetiker, 1997 - 2005
****************************************************************************
* rrd_gfx.c graphics wrapper for rrdtool
**************************************************************************/
/* create a freetype glyph string */
gfx_string gfx_string_create ( FT_Face face,
- const char *text, int rotation);
+ const char *text, int rotation, double tabwidth);
/* create a freetype glyph string */
static void gfx_string_destroy ( gfx_string string );
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);
+ return gfx_get_text_width_libart (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 gfx_get_text_width_libart (
double start, char* font, double size,
double tabwidth, char* text, int rotation){
error = FT_Set_Char_Size(face, size*64,size*64, 100,100);
if ( error ) return -1;
- string = gfx_string_create( face, text, rotation);
+ string = gfx_string_create( face, text, rotation,tabwidth);
text_width = string->width;
gfx_string_destroy(string);
FT_Done_FreeType(library);
return text_width/64;
}
-static void gfx_libart_close_path(gfx_canvas_t *canvas,
- gfx_node_t *node, ArtVpath **vec)
+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
art_vpath_add_point (vec, &points, &points_max, ART_END, 0, 0);
}
-static void gfx_round_scaled_coordinates(gfx_canvas_t *canvas,
- gfx_node_t *node, ArtVpath *vec)
+static void gfx_round_scaled_coordinates(ArtVpath *vec)
{
while (vec->code != ART_END) {
vec->x = floor(vec->x - LINEOFFSET + 0.5) + LINEOFFSET;
/* create a free type glyph string */
gfx_string gfx_string_create(FT_Face face,const char *text,
- int rotation)
+ int rotation, double tabwidth)
{
FT_GlyphSlot slot = face->glyph; /* a small shortcut */
gfx_char glyph; /* current glyph in table */
unsigned int n;
int error;
+ int gottab;
ft_pen.x = 0; /* start at (0,0) !! */
ft_pen.y = 0;
glyph = string->glyphs;
for (n=0; n<string->count; n++, glyph++) {
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. */
+ char letter = text[n];
+ gottab = 0;
+ if (letter == '\\' && n+1 < string->count && text[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, text[n] );
+ glyph->index = FT_Get_Char_Index( face, letter );
/* compute glyph origin */
if ( use_kerning && previous && glyph->index ) {
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]);
+ fprintf (stderr, "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", text[n]);
+ fprintf (stderr, "couldn't get glyph from slot: %c\n", letter);
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.x += slot->advance.x;
ft_pen.y += slot->advance.y;
/* rotate glyph */
}
/* convert to a bitmap - destroy native image */
- error = FT_Glyph_To_Bitmap (&glyph->image, ft_render_mode_normal, 0, 1);
+ 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;
}
/* printf ("number of glyphs = %d\n", string->num_glyphs);*/
compute_string_bbox( string );
- string->width = string->bbox.xMax - string->bbox.xMin;
+ /* 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;
}
art_affine_scale(dst,canvas->zoom,canvas->zoom);
vec = art_vpath_affine_transform(node->path,dst);
if (node->closed_path)
- gfx_libart_close_path(canvas, node, &vec);
- gfx_round_scaled_coordinates(canvas, node, vec);
+ gfx_libart_close_path(node, &vec);
+ gfx_round_scaled_coordinates(vec);
if(node->type == GFX_LINE){
svp = art_svp_vpath_stroke ( vec, ART_PATH_STROKE_JOIN_ROUND,
ART_PATH_STROKE_CAP_ROUND,
pen_x = node->x * canvas->zoom;
pen_y = node->y * canvas->zoom;
- string = gfx_string_create (face, node->text, node->angle);
+ string = gfx_string_create (face, node->text, node->angle, node->tabwidth);
switch(node->halign){
case GFX_H_RIGHT: vec.x = -string->bbox.xMax;
break;
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;
+ if (buf_y < 0 || buf_y >= (long)pys_height) continue;
buf_y *= rowstride;
for (ix=0;ix < bit->bitmap.width;ix++){
long buf_x = ix + (pen_x + 0.5) + (double)bit->left ;
art_u8 font_alpha;
- if (buf_x < 0 || buf_x >= pys_width) continue;
+ if (buf_x < 0 || buf_x >= (long)pys_width) continue;
buf_x *= bytes_per_pixel ;
font_alpha = *(bit->bitmap.buffer + iy * bit->bitmap.width + ix);
font_alpha = (art_u8)((double)font_alpha / gr * falpha);
"%!PS-Adobe-3.0 EPSF-3.0\n"
"%%Creator: RRDtool 1.1.x, Tobias Oetiker, http://tobi.oetiker.ch\n"
/* can't like weird chars here */
- "%%Title: (RRDTool output)\n"
+ "%%Title: (RRDtool output)\n"
"%%DocumentData: Clean7Bit\n"
"", state->fp);
fprintf(state->fp, "%%%%BoundingBox: 0 0 %d %d\n",
projects / rrdtool.git / blobdiff