From: oetiker Date: Sun, 20 Mar 2005 20:56:16 +0000 (+0000) Subject: added tabbig support X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=20ac3f138668d4e0c64ef79849faf9adefec9cb7;p=rrdtool.git added tabbig support git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@323 a5681a0c-68f1-0310-ab6d-d61299d08faa --- diff --git a/src/rrd_gfx.c b/src/rrd_gfx.c index 12607d4..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){ @@ -306,7 +306,7 @@ 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); @@ -372,7 +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 */ @@ -384,6 +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; @@ -404,14 +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 ) { @@ -422,24 +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 */ @@ -452,7 +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; @@ -464,9 +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; } @@ -548,7 +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; diff --git a/src/rrd_gfx.h b/src/rrd_gfx.h index ad04f46..0994900 100644 --- a/src/rrd_gfx.h +++ b/src/rrd_gfx.h @@ -7,6 +7,7 @@ #ifndef RRD_GFX_H #define RRD_GFX_H #define LIBART_COMPILATION + #include enum gfx_if_en {IF_PNG=0,IF_SVG,IF_EPS,IF_PDF}; @@ -101,8 +102,7 @@ int gfx_destroy (gfx_canvas_t *canvas); int gfx_render_png (gfx_canvas_t *canvas, art_u32 width, art_u32 height, gfx_color_t background, FILE *fo); -double gfx_get_text_width_libart ( gfx_canvas_t *canvas, - double start, char* font, double size, +double gfx_get_text_width_libart ( double start, char* font, double size, double tabwidth, char* text, int rotation); /* SVG support */