X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrd_gfx.c;h=253c7a6378108d081447617c75ebe72377181317;hb=23d1c29c5b06a786817613f266e04887af4945c4;hp=c06e061c8227c120bd2417cb2dc0881bf273f549;hpb=d828f3eccac8dbad7bfc14812e406377669baaa4;p=rrdtool.git diff --git a/src/rrd_gfx.c b/src/rrd_gfx.c index c06e061..253c7a6 100644 --- a/src/rrd_gfx.c +++ b/src/rrd_gfx.c @@ -1,5 +1,5 @@ /**************************************************************************** - * 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 **************************************************************************/ @@ -46,7 +46,7 @@ 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); + const char *text, int rotation, double tabwidth); /* create a freetype glyph string */ static void gfx_string_destroy ( gfx_string string ); @@ -280,7 +280,7 @@ double gfx_get_text_width ( gfx_canvas_t *canvas, 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: @@ -290,7 +290,7 @@ double gfx_get_text_width ( gfx_canvas_t *canvas, } } -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){ @@ -306,15 +306,14 @@ double gfx_get_text_width_libart ( gfx_canvas_t *canvas, 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 @@ -326,8 +325,7 @@ static void gfx_libart_close_path(gfx_canvas_t *canvas, 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; @@ -374,7 +372,7 @@ static void compute_string_bbox(gfx_string string) { /* 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 */ @@ -386,6 +384,7 @@ gfx_string gfx_string_create(FT_Face face,const char *text, 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; @@ -406,14 +405,29 @@ gfx_string gfx_string_create(FT_Face face,const char *text, glyph = string->glyphs; for (n=0; ncount; 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 ) { @@ -424,24 +438,30 @@ gfx_string gfx_string_create(FT_Face face,const char *text, 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 */ @@ -454,7 +474,7 @@ gfx_string gfx_string_create(FT_Face face,const char *text, } /* 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; @@ -466,9 +486,13 @@ gfx_string gfx_string_create(FT_Face face,const char *text, } /* 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; } @@ -503,8 +527,8 @@ int gfx_render_png (gfx_canvas_t *canvas, 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, @@ -550,7 +574,7 @@ int gfx_render_png (gfx_canvas_t *canvas, 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; @@ -602,13 +626,13 @@ int gfx_render_png (gfx_canvas_t *canvas, 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);