From d0371d8311c9008255a6e50ff296f349f74e10e5 Mon Sep 17 00:00:00 2001 From: oetiker Date: Sun, 26 Oct 2003 19:29:56 +0000 Subject: [PATCH] added rotation ... git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@215 a5681a0c-68f1-0310-ab6d-d61299d08faa --- src/rrd_gfx.c | 352 +++++++++++++++++++++++++++++++++++++++----------------- src/rrd_gfx.h | 5 +- src/rrd_graph.c | 18 +-- 3 files changed, 260 insertions(+), 115 deletions(-) diff --git a/src/rrd_gfx.c b/src/rrd_gfx.c index 28007cd..103f213 100644 --- a/src/rrd_gfx.c +++ b/src/rrd_gfx.c @@ -15,6 +15,7 @@ #include #include #include FT_FREETYPE_H +#include FT_GLYPH_H #include "rrd_gfx.h" #include "rrd_afm.h" @@ -22,6 +23,34 @@ /* 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); @@ -182,10 +211,10 @@ gfx_node_t *gfx_new_text (gfx_canvas_t *canvas, 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; @@ -235,12 +264,23 @@ int gfx_render(gfx_canvas_t *canvas, } } +static void gfx_string_destroy ( gfx_string string ) { + unsigned int n; + if (string->glyphs) { + for (n=0; nnum_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: @@ -252,52 +292,27 @@ double gfx_get_text_width ( gfx_canvas_t *canvas, 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) { @@ -321,9 +336,147 @@ static void gfx_round_scaled_coordinates(gfx_canvas_t *canvas, } } +/* 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; ncount; 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){ @@ -366,15 +519,13 @@ int gfx_render_png (gfx_canvas_t *canvas, 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; */ @@ -389,7 +540,6 @@ int gfx_render_png (gfx_canvas_t *canvas, 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), @@ -399,75 +549,68 @@ int gfx_render_png (gfx_canvas_t *canvas, 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; nnum_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; @@ -476,8 +619,9 @@ int gfx_render_png (gfx_canvas_t *canvas, } } } - pen_x += (double)slot->metrics.horiAdvance / 64.0; + FT_Done_Glyph (image); } + gfx_string_destroy(string); } } node = node->next; diff --git a/src/rrd_gfx.h b/src/rrd_gfx.h index 81020ad..dafd7d0 100644 --- a/src/rrd_gfx.h +++ b/src/rrd_gfx.h @@ -45,7 +45,6 @@ typedef struct gfx_canvas_t double zoom; /* zoom for graph */ } gfx_canvas_t; - gfx_canvas_t *gfx_new_canvas (void); /* create a new line */ @@ -86,7 +85,7 @@ gfx_node_t *gfx_new_text (gfx_canvas_t *canvas, /* 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, @@ -104,7 +103,7 @@ int gfx_render_png (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, diff --git a/src/rrd_graph.c b/src/rrd_graph.c index 2d08b10..ef3c727 100644 --- a/src/rrd_graph.c +++ b/src/rrd_graph.c @@ -33,7 +33,8 @@ char rrd_win_default_font[80]; #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 @@ -1402,7 +1403,7 @@ leg_place(image_desc_t *im) 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; @@ -1450,7 +1451,7 @@ leg_place(image_desc_t *im) 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 && @@ -1888,13 +1889,14 @@ grid_paint(image_desc_t *im) } /* 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 */ @@ -1905,7 +1907,7 @@ grid_paint(image_desc_t *im) for (n=0;nylegend);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, @@ -1941,7 +1943,7 @@ grid_paint(image_desc_t *im) 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, @@ -2093,7 +2095,7 @@ graph_size_location(image_desc_t *im, int elements, int piechart ) 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; } -- 2.11.0