… | |
… | |
35 | |
35 | |
36 | struct _PangoOpenGLRenderer |
36 | struct _PangoOpenGLRenderer |
37 | { |
37 | { |
38 | PangoRenderer parent_instance; |
38 | PangoRenderer parent_instance; |
39 | float r, g, b, a; // modulate |
39 | float r, g, b, a; // modulate |
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|
40 | int flags; |
40 | GLuint curtex; // current texture |
41 | GLuint curtex; // current texture |
41 | }; |
42 | }; |
42 | |
43 | |
43 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
44 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
44 | |
45 | |
… | |
… | |
100 | } |
101 | } |
101 | |
102 | |
102 | static void |
103 | static void |
103 | font_render_glyph (Glyph *glyph, PangoFont *font, int glyph_index) |
104 | font_render_glyph (Glyph *glyph, PangoFont *font, int glyph_index) |
104 | { |
105 | { |
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106 | FT_Face face; |
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107 | |
105 | if (glyph_index & PANGO_GLYPH_UNKNOWN_FLAG) |
108 | if (glyph_index & PANGO_GLYPH_UNKNOWN_FLAG) |
106 | { |
109 | { |
107 | PangoFontMetrics *metrics; |
110 | PangoFontMetrics *metrics; |
108 | |
111 | |
109 | if (!font) |
112 | if (!font) |
… | |
… | |
120 | pango_font_metrics_unref (metrics); |
123 | pango_font_metrics_unref (metrics); |
121 | |
124 | |
122 | return; |
125 | return; |
123 | } |
126 | } |
124 | |
127 | |
125 | FT_Face face = pango_opengl_font_get_face (font); |
128 | face = pango_opengl_font_get_face (font); |
126 | |
129 | |
127 | if (face) |
130 | if (face) |
128 | { |
131 | { |
129 | PangoOpenGLFont *glfont = (PangoOpenGLFont *)font; |
132 | PangoOpenGLFont *glfont = (PangoOpenGLFont *)font; |
130 | |
133 | |
… | |
… | |
144 | } |
147 | } |
145 | |
148 | |
146 | typedef struct glyph_info { |
149 | typedef struct glyph_info { |
147 | tc_area tex; |
150 | tc_area tex; |
148 | int left, top; |
151 | int left, top; |
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152 | int generation; |
149 | } glyph_info; |
153 | } glyph_info; |
150 | |
154 | |
151 | static void |
155 | static void |
152 | free_glyph_info (glyph_info *g) |
156 | free_glyph_info (glyph_info *g) |
153 | { |
157 | { |
… | |
… | |
157 | |
161 | |
158 | static void |
162 | static void |
159 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
163 | draw_glyph (PangoRenderer *renderer_, PangoFont *font, PangoGlyph glyph, double x, double y) |
160 | { |
164 | { |
161 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
165 | PangoOpenGLRenderer *renderer = PANGO_OPENGL_RENDERER (renderer_); |
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166 | glyph_info *g; |
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167 | float x1, y1, x2, y2; |
162 | |
168 | |
163 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
169 | if (glyph & PANGO_GLYPH_UNKNOWN_FLAG) |
164 | { |
170 | { |
165 | glyph = pango_opengl_get_unknown_glyph (font); |
171 | glyph = pango_opengl_get_unknown_glyph (font); |
166 | |
172 | |
167 | if (glyph == PANGO_GLYPH_EMPTY) |
173 | if (glyph == PANGO_GLYPH_EMPTY) |
168 | glyph = PANGO_GLYPH_UNKNOWN_FLAG; |
174 | glyph = PANGO_GLYPH_UNKNOWN_FLAG; |
169 | } |
175 | } |
170 | |
176 | |
171 | glyph_info *g = _pango_opengl_font_get_cache_glyph_data (font, glyph); |
177 | g = _pango_opengl_font_get_cache_glyph_data (font, glyph); |
172 | |
178 | |
173 | if (!g) |
179 | if (!g || g->generation != tc_generation) |
174 | { |
180 | { |
175 | Glyph bm; |
181 | Glyph bm; |
176 | font_render_glyph (&bm, font, glyph); |
182 | font_render_glyph (&bm, font, glyph); |
177 | |
183 | |
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184 | if (g) |
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185 | g->generation = tc_generation; |
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186 | else |
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187 | { |
178 | g = g_slice_new (glyph_info); |
188 | g = g_slice_new (glyph_info); |
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189 | |
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190 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
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191 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
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192 | } |
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193 | |
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194 | if (renderer->curtex) |
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195 | glEnd (); |
179 | |
196 | |
180 | tc_get (&g->tex, bm.width, bm.height); |
197 | tc_get (&g->tex, bm.width, bm.height); |
181 | |
198 | |
182 | g->left = bm.left; |
199 | g->left = bm.left; |
183 | g->top = bm.top; |
200 | g->top = bm.top; |
184 | |
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185 | if (renderer->curtex) |
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186 | { |
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187 | glEnd (); |
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188 | renderer->curtex = 0; |
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189 | } |
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190 | |
201 | |
191 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
202 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
192 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
203 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
193 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
204 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
194 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
205 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
195 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
206 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
196 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
207 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
197 | |
208 | |
198 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
209 | renderer->curtex = g->tex.name; |
199 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
210 | glBegin (GL_QUADS); |
200 | } |
211 | } |
201 | |
212 | |
202 | x += g->left; |
213 | x += g->left; |
203 | y -= g->top; |
214 | y -= g->top; |
204 | |
215 | |
205 | float x1 = g->tex.x * (1. / TC_WIDTH ); |
216 | x1 = g->tex.x * (1. / TC_WIDTH ); |
206 | float y1 = g->tex.y * (1. / TC_HEIGHT); |
217 | y1 = g->tex.y * (1. / TC_HEIGHT); |
207 | float x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
218 | x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
208 | float y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
219 | y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
209 | |
220 | |
210 | if (g->tex.name != renderer->curtex) |
221 | if (g->tex.name != renderer->curtex) |
211 | { |
222 | { |
212 | if (renderer->curtex) |
223 | if (renderer->curtex) |
213 | glEnd (); |
224 | glEnd (); |
214 | |
225 | |
215 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
226 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
216 | renderer->curtex = g->tex.name; |
227 | renderer->curtex = g->tex.name; |
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228 | |
217 | glBegin (GL_QUADS); |
229 | glBegin (GL_QUADS); |
218 | } |
230 | } |
219 | |
231 | |
220 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
232 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
221 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
233 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
… | |
… | |
243 | |
255 | |
244 | glDisable (GL_TEXTURE_2D); |
256 | glDisable (GL_TEXTURE_2D); |
245 | |
257 | |
246 | glBegin (GL_QUADS); |
258 | glBegin (GL_QUADS); |
247 | glVertex2d (x11, y1); |
259 | glVertex2d (x11, y1); |
248 | glVertex2d (x12, y1); |
260 | glVertex2d (x21, y1); |
249 | glVertex2d (x22, y2); |
261 | glVertex2d (x22, y2); |
250 | glVertex2d (x21, y2); |
262 | glVertex2d (x12, y2); |
251 | glEnd (); |
263 | glEnd (); |
252 | |
264 | |
253 | glEnable (GL_TEXTURE_2D); |
265 | glEnable (GL_TEXTURE_2D); |
254 | } |
266 | } |
255 | |
267 | |
256 | void |
268 | void |
257 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
269 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
258 | int x, int y, |
270 | int x, int y, |
259 | float r, float g, float b, float a) |
271 | float r, float g, float b, float a, |
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272 | int flags) |
260 | { |
273 | { |
261 | PangoContext *context; |
274 | PangoContext *context; |
262 | PangoFontMap *fontmap; |
275 | PangoFontMap *fontmap; |
263 | PangoRenderer *renderer; |
276 | PangoRenderer *renderer; |
264 | |
277 | |
… | |
… | |
268 | |
281 | |
269 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
282 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
270 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
283 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
271 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
284 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
272 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
285 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
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|
286 | PANGO_OPENGL_RENDERER (renderer)->flags = flags; |
273 | |
287 | |
274 | pango_renderer_draw_layout (renderer, layout, x, y); |
288 | pango_renderer_draw_layout (renderer, layout, x, y); |
275 | } |
289 | } |
276 | |
290 | |
277 | void |
291 | void |
278 | pango_opengl_render_layout (PangoLayout *layout, |
292 | pango_opengl_render_layout (PangoLayout *layout, |
279 | int x, int y, |
293 | int x, int y, |
280 | float r, float g, float b, float a) |
294 | float r, float g, float b, float a, |
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295 | int flags) |
281 | { |
296 | { |
282 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a); |
297 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags); |
283 | } |
298 | } |
284 | |
299 | |
285 | static void |
300 | static void |
286 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
301 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
287 | { |
302 | { |
… | |
… | |
295 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
310 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
296 | { |
311 | { |
297 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
312 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
298 | PangoColor *fg = 0; |
313 | PangoColor *fg = 0; |
299 | GSList *l; |
314 | GSList *l; |
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|
315 | unsigned char r, g, b, a; |
300 | |
316 | |
301 | renderer->underline = PANGO_UNDERLINE_NONE; |
317 | renderer->underline = PANGO_UNDERLINE_NONE; |
302 | renderer->strikethrough = FALSE; |
318 | renderer->strikethrough = FALSE; |
303 | |
319 | |
304 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
320 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
… | |
… | |
323 | break; |
339 | break; |
324 | } |
340 | } |
325 | } |
341 | } |
326 | |
342 | |
327 | if (fg) |
343 | if (fg) |
328 | glColor4f (fg->red / 65535., fg->green / 65535., fg->blue / 65535., glrenderer->a); |
344 | { |
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345 | r = fg->red * (255.f / 65535.f); |
|
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346 | g = fg->green * (255.f / 65535.f); |
|
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347 | b = fg->blue * (255.f / 65535.f); |
|
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348 | } |
329 | else |
349 | else |
330 | glColor4f (glrenderer->r, glrenderer->g, glrenderer->b, glrenderer->a); |
350 | { |
|
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351 | r = glrenderer->r * 255.f; |
|
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352 | g = glrenderer->g * 255.f; |
|
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353 | b = glrenderer->b * 255.f; |
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354 | } |
|
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355 | |
|
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356 | a = glrenderer->a * 255.f; |
|
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357 | |
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358 | if (glrenderer->flags & FLAG_INVERSE) |
|
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359 | { |
|
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360 | r ^= 0xffU; |
|
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361 | g ^= 0xffU; |
|
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362 | b ^= 0xffU; |
|
|
363 | } |
|
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364 | |
|
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365 | glColor4ub (r, g, b, a); |
331 | } |
366 | } |
332 | |
367 | |
333 | static void |
368 | static void |
334 | draw_begin (PangoRenderer *renderer_) |
369 | draw_begin (PangoRenderer *renderer_) |
335 | { |
370 | { |