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comparison src/shape_text.c @ 448:16116d84bc5e

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Replace Cairo with a abstract layer mb_graph_engine. mb_graph_engine is a layer to separate MadButterfly from Cairo. It is only a set of macro mapping to cairo implementation, now. But, it provides a oppotunities to replace cairo with other engines; likes skia.
author Thinker K.F. Li <thinker@branda.to>
date Tue, 04 Aug 2009 23:35:41 +0800
parents 27774b93521e
children 61a0bceb369d
comparison
equal deleted inserted replaced
447:38aae921243f 448:16116d84bc5e
1 #include <stdio.h> 1 #include <stdio.h>
2 #include <stdlib.h> 2 #include <stdlib.h>
3 #include <string.h> 3 #include <string.h>
4 #include <math.h> 4 #include <math.h>
5 #include <cairo.h> 5 #include "mb_graph_engine.h"
6 #include <pango/pangocairo.h> 6 #include <pango/pangocairo.h>
7 #include "mb_types.h" 7 #include "mb_types.h"
8 #include "mb_shapes.h" 8 #include "mb_shapes.h"
9 9
10 #define ASSERT(x) 10 #define ASSERT(x)
16 char *data; 16 char *data;
17 co_aix x, y; 17 co_aix x, y;
18 co_aix d_x, d_y; /* device x and y */ 18 co_aix d_x, d_y; /* device x and y */
19 co_aix font_size; 19 co_aix font_size;
20 co_aix d_font_size; 20 co_aix d_font_size;
21 cairo_font_face_t *face; 21 mbe_font_face_t *face;
22 cairo_scaled_font_t *scaled_font; 22 mbe_scaled_font_t *scaled_font;
23 int flags; 23 int flags;
24 PangoLayout *layout; 24 PangoLayout *layout;
25 int align; 25 int align;
26 PangoAttrList *attrs; 26 PangoAttrList *attrs;
27 } sh_text_t; 27 } sh_text_t;
30 30
31 static void sh_text_free(shape_t *shape) { 31 static void sh_text_free(shape_t *shape) {
32 sh_text_t *text = (sh_text_t *)shape; 32 sh_text_t *text = (sh_text_t *)shape;
33 33
34 if(text->scaled_font) 34 if(text->scaled_font)
35 cairo_scaled_font_destroy(text->scaled_font); 35 mbe_scaled_font_destroy(text->scaled_font);
36 cairo_font_face_destroy(text->face); 36 mbe_font_face_destroy(text->face);
37 } 37 }
38 38
39 static void sh_text_P_generate_layout(sh_text_t *text,cairo_t *cr); 39 static void sh_text_P_generate_layout(sh_text_t *text,mbe_t *cr);
40 shape_t *rdman_shape_text_new(redraw_man_t *rdman, 40 shape_t *rdman_shape_text_new(redraw_man_t *rdman,
41 const char *txt, co_aix x, co_aix y, 41 const char *txt, co_aix x, co_aix y,
42 co_aix font_size, cairo_font_face_t *face,PangoAttrList *attrs) { 42 co_aix font_size, mbe_font_face_t *face,PangoAttrList *attrs) {
43 sh_text_t *text; 43 sh_text_t *text;
44 44
45 text = (sh_text_t *)malloc(sizeof(sh_text_t)); 45 text = (sh_text_t *)malloc(sizeof(sh_text_t));
46 if(text == NULL) 46 if(text == NULL)
47 return NULL; 47 return NULL;
54 return NULL; 54 return NULL;
55 } 55 }
56 text->x = x; 56 text->x = x;
57 text->y = y; 57 text->y = y;
58 text->font_size = font_size; 58 text->font_size = font_size;
59 cairo_font_face_reference(face); 59 mbe_font_face_reference(face);
60 text->face = face; 60 text->face = face;
61 text->flags |= TXF_SCALE_DIRTY; 61 text->flags |= TXF_SCALE_DIRTY;
62 62
63 text->shape.free = sh_text_free; 63 text->shape.free = sh_text_free;
64 text->layout = NULL; 64 text->layout = NULL;
191 text->align = format->align; 191 text->align = format->align;
192 } 192 }
193 } 193 }
194 194
195 static int get_extents(sh_text_t *text, PangoRectangle *extents) { 195 static int get_extents(sh_text_t *text, PangoRectangle *extents) {
196 cairo_matrix_t fmatrix; 196 mbe_matrix_t fmatrix;
197 cairo_matrix_t ctm; 197 mbe_matrix_t ctm;
198 cairo_scaled_font_t *new_scaled; 198 mbe_scaled_font_t *new_scaled;
199 cairo_font_options_t *fopt; 199 mbe_font_options_t *fopt;
200 200
201 pango_layout_get_extents(text->layout, NULL, extents); 201 pango_layout_get_extents(text->layout, NULL, extents);
202 pango_extents_to_pixels(extents,NULL); 202 pango_extents_to_pixels(extents,NULL);
203 return OK; 203 return OK;
204 } 204 }
217 217
218 text->d_font_size = coord_trans_size(shape->coord, text->font_size); 218 text->d_font_size = coord_trans_size(shape->coord, text->font_size);
219 219
220 coord = sh_get_coord(shape); 220 coord = sh_get_coord(shape);
221 canvas = _coord_get_canvas(coord); 221 canvas = _coord_get_canvas(coord);
222 sh_text_P_generate_layout(text, (cairo_t *)canvas); 222 sh_text_P_generate_layout(text, (mbe_t *)canvas);
223 223
224 x = text->x; 224 x = text->x;
225 y = text->y; 225 y = text->y;
226 coord_trans_pos(shape->coord, &x, &y); 226 coord_trans_pos(shape->coord, &x, &y);
227 r = get_extents(text, &extents); 227 r = get_extents(text, &extents);
242 poses[1][1] = poses[0][1] + extents.height + shape->stroke_width; 242 poses[1][1] = poses[0][1] + extents.height + shape->stroke_width;
243 geo_from_positions(shape->geo, 2, poses); 243 geo_from_positions(shape->geo, 2, poses);
244 /*! \todo Support ratation for shape_text. */ 244 /*! \todo Support ratation for shape_text. */
245 } 245 }
246 246
247 static void sh_text_P_generate_layout(sh_text_t *text,cairo_t *cr) 247 static void sh_text_P_generate_layout(sh_text_t *text,mbe_t *cr)
248 { 248 {
249 PangoAttribute *attr; 249 PangoAttribute *attr;
250 PangoAttrList *attrlist; 250 PangoAttrList *attrlist;
251 PangoFontDescription *desc; 251 PangoFontDescription *desc;
252 252
253 if (text->layout) { 253 if (text->layout) {
254 g_object_unref(text->layout); 254 g_object_unref(text->layout);
255 } 255 }
256 text->layout = pango_cairo_create_layout(cr); 256 text->layout = pango_cairo_create_layout(cr);
257 desc = pango_font_description_from_string("Sans Bold"); 257 desc = pango_font_description_from_string("Sans Bold");
258 //cairo_set_source_rgb (cr, 0, 0, 0); 258 //mbe_set_source_rgb (cr, 0, 0, 0);
259 pango_layout_set_font_description (text->layout, desc); 259 pango_layout_set_font_description (text->layout, desc);
260 pango_layout_set_text(text->layout,text->data,strlen(text->data)); 260 pango_layout_set_text(text->layout,text->data,strlen(text->data));
261 pango_layout_set_attributes(text->layout, text->attrs); 261 pango_layout_set_attributes(text->layout, text->attrs);
262 pango_cairo_update_layout(cr,text->layout); 262 pango_cairo_update_layout(cr,text->layout);
263 printf("text=%s\n",text->data); 263 printf("text=%s\n",text->data);
264 } 264 }
265 static void draw_text(sh_text_t *text, cairo_t *cr) { 265 static void draw_text(sh_text_t *text, mbe_t *cr) {
266 cairo_move_to(cr, text->d_x, text->d_y); 266 mbe_move_to(cr, text->d_x, text->d_y);
267 pango_cairo_layout_path(cr,text->layout); 267 pango_cairo_layout_path(cr,text->layout);
268 } 268 }
269 269
270 270
271 void sh_text_draw(shape_t *shape, cairo_t *cr) { 271 void sh_text_draw(shape_t *shape, mbe_t *cr) {
272 draw_text((sh_text_t *)shape, cr); 272 draw_text((sh_text_t *)shape, cr);
273 } 273 }
274 274