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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 |
40 | GLuint curtex; // current texture |
40 | int flags; |
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41 | rc_t *rc; // rendercache |
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42 | rc_key_t key; // current render key |
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43 | rc_array_t *arr; |
41 | }; |
44 | }; |
42 | |
45 | |
43 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
46 | G_DEFINE_TYPE (PangoOpenGLRenderer, pango_opengl_renderer, PANGO_TYPE_RENDERER) |
44 | |
47 | |
45 | typedef struct |
48 | typedef struct |
… | |
… | |
188 | |
191 | |
189 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
192 | _pango_opengl_font_set_glyph_cache_destroy (font, (GDestroyNotify)free_glyph_info); |
190 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
193 | _pango_opengl_font_set_cache_glyph_data (font, glyph, g); |
191 | } |
194 | } |
192 | |
195 | |
193 | if (renderer->curtex) |
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194 | glEnd (); |
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195 | |
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196 | tc_get (&g->tex, bm.width, bm.height); |
196 | tc_get (&g->tex, bm.width, bm.height); |
197 | |
197 | |
198 | g->left = bm.left; |
198 | g->left = bm.left; |
199 | g->top = bm.top; |
199 | g->top = bm.top; |
200 | |
200 | |
… | |
… | |
202 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
202 | glPixelStorei (GL_UNPACK_ROW_LENGTH, bm.stride); |
203 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
203 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
204 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
204 | glTexSubImage2D (GL_TEXTURE_2D, 0, g->tex.x, g->tex.y, bm.width, bm.height, GL_ALPHA, GL_UNSIGNED_BYTE, bm.bitmap); |
205 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
205 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
206 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
206 | glPixelStorei (GL_UNPACK_ALIGNMENT, 4); |
207 | |
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208 | renderer->curtex = g->tex.name; |
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209 | glBegin (GL_QUADS); |
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210 | } |
207 | } |
211 | |
208 | |
212 | x += g->left; |
209 | x += g->left; |
213 | y -= g->top; |
210 | y -= g->top; |
214 | |
211 | |
215 | x1 = g->tex.x * (1. / TC_WIDTH ); |
212 | x1 = g->tex.x * (1. / TC_WIDTH ); |
216 | y1 = g->tex.y * (1. / TC_HEIGHT); |
213 | y1 = g->tex.y * (1. / TC_HEIGHT); |
217 | x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
214 | x2 = g->tex.w * (1. / TC_WIDTH ) + x1; |
218 | y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
215 | y2 = g->tex.h * (1. / TC_HEIGHT) + y1; |
219 | |
216 | |
220 | if (g->tex.name != renderer->curtex) |
217 | if (g->tex.name != renderer->key.texname) |
221 | { |
218 | { |
222 | if (renderer->curtex) |
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223 | glEnd (); |
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224 | |
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225 | glBindTexture (GL_TEXTURE_2D, g->tex.name); |
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226 | renderer->curtex = g->tex.name; |
219 | renderer->key.texname = g->tex.name; |
227 | |
220 | renderer->arr = rc_array (renderer->rc, &renderer->key); |
228 | glBegin (GL_QUADS); |
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229 | } |
221 | } |
230 | |
222 | |
231 | glTexCoord2f (x1, y1); glVertex2i (x , y ); |
223 | rc_t2f_v3f (renderer->arr, x1, y1, x , y , 0); |
232 | glTexCoord2f (x2, y1); glVertex2i (x + g->tex.w, y ); |
224 | rc_t2f_v3f (renderer->arr, x2, y1, x + g->tex.w, y , 0); |
233 | glTexCoord2f (x2, y2); glVertex2i (x + g->tex.w, y + g->tex.h); |
225 | rc_t2f_v3f (renderer->arr, x2, y2, x + g->tex.w, y + g->tex.h, 0); |
234 | glTexCoord2f (x1, y2); glVertex2i (x , y + g->tex.h); |
226 | rc_t2f_v3f (renderer->arr, x1, y2, x , y + g->tex.h, 0); |
235 | } |
227 | } |
236 | |
228 | |
237 | static void |
229 | static void |
238 | draw_trapezoid (PangoRenderer *renderer_, |
230 | draw_trapezoid (PangoRenderer *renderer_, |
239 | PangoRenderPart part, |
231 | PangoRenderPart part, |
… | |
… | |
243 | double y2, |
235 | double y2, |
244 | double x12, |
236 | double x12, |
245 | double x22) |
237 | double x22) |
246 | { |
238 | { |
247 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
239 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
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240 | rc_key_t key = renderer->key; |
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241 | rc_array_t *arr; |
248 | |
242 | |
249 | if (renderer->curtex) |
243 | key.mode = GL_QUADS; |
250 | { |
244 | key.format = GL_V2F; |
251 | glEnd (); |
245 | key.texname = 0; |
252 | renderer->curtex = 0; |
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253 | } |
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254 | |
246 | |
255 | glDisable (GL_TEXTURE_2D); |
247 | arr = rc_array (renderer->rc, &key); |
256 | |
248 | |
257 | glBegin (GL_QUADS); |
249 | rc_v2f (arr, x11, y1); |
258 | glVertex2d (x11, y1); |
250 | rc_v2f (arr, x21, y1); |
259 | glVertex2d (x12, y1); |
251 | rc_v2f (arr, x22, y2); |
260 | glVertex2d (x22, y2); |
252 | rc_v2f (arr, x12, y2); |
261 | glVertex2d (x21, y2); |
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262 | glEnd (); |
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263 | |
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264 | glEnable (GL_TEXTURE_2D); |
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265 | } |
253 | } |
266 | |
254 | |
267 | void |
255 | void |
268 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
256 | pango_opengl_render_layout_subpixel (PangoLayout *layout, |
269 | int x, int y, |
257 | int x, int y, |
270 | float r, float g, float b, float a) |
258 | float r, float g, float b, float a, |
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259 | int flags) |
271 | { |
260 | { |
272 | PangoContext *context; |
261 | PangoContext *context; |
273 | PangoFontMap *fontmap; |
262 | PangoFontMap *fontmap; |
274 | PangoRenderer *renderer; |
263 | PangoRenderer *renderer; |
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264 | PangoOpenGLRenderer *gl; |
275 | |
265 | |
276 | context = pango_layout_get_context (layout); |
266 | context = pango_layout_get_context (layout); |
277 | fontmap = pango_context_get_font_map (context); |
267 | fontmap = pango_context_get_font_map (context); |
278 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
268 | renderer = _pango_opengl_font_map_get_renderer (PANGO_OPENGL_FONT_MAP (fontmap)); |
279 | |
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280 | PANGO_OPENGL_RENDERER (renderer)->r = r; |
269 | gl = PANGO_OPENGL_RENDERER (renderer); |
281 | PANGO_OPENGL_RENDERER (renderer)->g = g; |
270 | |
282 | PANGO_OPENGL_RENDERER (renderer)->b = b; |
271 | gl->rc = rc_alloc (); |
283 | PANGO_OPENGL_RENDERER (renderer)->a = a; |
272 | gl->r = r; |
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273 | gl->g = g; |
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274 | gl->b = b; |
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275 | gl->a = a; |
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276 | gl->flags = flags; |
284 | |
277 | |
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278 | glEnable (GL_TEXTURE_2D); |
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279 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
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280 | glEnable (GL_BLEND); |
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281 | gl_BlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, |
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282 | GL_ONE , GL_ONE_MINUS_SRC_ALPHA); |
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283 | glEnable (GL_ALPHA_TEST); |
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284 | glAlphaFunc (GL_GREATER, 0.01f); |
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285 | |
285 | pango_renderer_draw_layout (renderer, layout, x, y); |
286 | pango_renderer_draw_layout (renderer, layout, x, y); |
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287 | |
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288 | rc_draw (gl->rc); |
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289 | |
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290 | glDisable (GL_ALPHA_TEST); |
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291 | glDisable (GL_BLEND); |
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292 | glDisable (GL_TEXTURE_2D); |
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293 | |
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294 | rc_free (gl->rc); |
286 | } |
295 | } |
287 | |
296 | |
288 | void |
297 | void |
289 | pango_opengl_render_layout (PangoLayout *layout, |
298 | pango_opengl_render_layout (PangoLayout *layout, |
290 | int x, int y, |
299 | int x, int y, |
291 | float r, float g, float b, float a) |
300 | float r, float g, float b, float a, |
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301 | int flags) |
292 | { |
302 | { |
293 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a); |
303 | pango_opengl_render_layout_subpixel (layout, x * PANGO_SCALE, y * PANGO_SCALE, r, g, b, a, flags); |
294 | } |
304 | } |
295 | |
305 | |
296 | static void |
306 | static void |
297 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
307 | pango_opengl_renderer_init (PangoOpenGLRenderer *renderer) |
298 | { |
308 | { |
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309 | memset (&renderer->key, 0, sizeof (rc_key_t)); |
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310 | |
299 | renderer->r = 1.; |
311 | renderer->r = 1.; |
300 | renderer->g = 1.; |
312 | renderer->g = 1.; |
301 | renderer->b = 1.; |
313 | renderer->b = 1.; |
302 | renderer->a = 1.; |
314 | renderer->a = 1.; |
303 | } |
315 | } |
304 | |
316 | |
305 | static void |
317 | static void |
306 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
318 | prepare_run (PangoRenderer *renderer, PangoLayoutRun *run) |
307 | { |
319 | { |
308 | PangoOpenGLRenderer *glrenderer = (PangoOpenGLRenderer *)renderer; |
320 | PangoOpenGLRenderer *gl = (PangoOpenGLRenderer *)renderer; |
309 | PangoColor *fg = 0; |
321 | PangoColor *fg = 0; |
310 | GSList *l; |
322 | GSList *l; |
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323 | unsigned char r, g, b, a; |
311 | |
324 | |
312 | renderer->underline = PANGO_UNDERLINE_NONE; |
325 | renderer->underline = PANGO_UNDERLINE_NONE; |
313 | renderer->strikethrough = FALSE; |
326 | renderer->strikethrough = FALSE; |
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327 | |
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328 | gl->key.mode = GL_QUADS; |
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329 | gl->key.format = GL_T2F_V3F; |
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330 | gl->key.texname = 0; |
314 | |
331 | |
315 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
332 | for (l = run->item->analysis.extra_attrs; l; l = l->next) |
316 | { |
333 | { |
317 | PangoAttribute *attr = l->data; |
334 | PangoAttribute *attr = l->data; |
318 | |
335 | |
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334 | break; |
351 | break; |
335 | } |
352 | } |
336 | } |
353 | } |
337 | |
354 | |
338 | if (fg) |
355 | if (fg) |
339 | glColor4f (fg->red / 65535., fg->green / 65535., fg->blue / 65535., glrenderer->a); |
356 | { |
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357 | r = fg->red * (255.f / 65535.f); |
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358 | g = fg->green * (255.f / 65535.f); |
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359 | b = fg->blue * (255.f / 65535.f); |
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360 | } |
340 | else |
361 | else |
341 | glColor4f (glrenderer->r, glrenderer->g, glrenderer->b, glrenderer->a); |
362 | { |
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363 | r = gl->r * 255.f; |
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364 | g = gl->g * 255.f; |
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365 | b = gl->b * 255.f; |
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366 | } |
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367 | |
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368 | a = gl->a * 255.f; |
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369 | |
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370 | if (gl->flags & FLAG_INVERSE) |
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371 | { |
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372 | r ^= 0xffU; |
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373 | g ^= 0xffU; |
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374 | b ^= 0xffU; |
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375 | } |
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376 | |
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377 | gl->key.r = r; |
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378 | gl->key.g = g; |
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379 | gl->key.b = b; |
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380 | gl->key.a = a; |
342 | } |
381 | } |
343 | |
382 | |
344 | static void |
383 | static void |
345 | draw_begin (PangoRenderer *renderer_) |
384 | draw_begin (PangoRenderer *renderer_) |
346 | { |
385 | { |
347 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
386 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
348 | |
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349 | renderer->curtex = 0; |
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350 | |
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351 | glEnable (GL_TEXTURE_2D); |
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352 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
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353 | glEnable (GL_BLEND); |
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354 | gl_BlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, |
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355 | GL_ONE , GL_ONE_MINUS_SRC_ALPHA); |
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356 | glEnable (GL_ALPHA_TEST); |
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357 | glAlphaFunc (GL_GREATER, 0.01f); |
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358 | } |
387 | } |
359 | |
388 | |
360 | static void |
389 | static void |
361 | draw_end (PangoRenderer *renderer_) |
390 | draw_end (PangoRenderer *renderer_) |
362 | { |
391 | { |
363 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
392 | PangoOpenGLRenderer *renderer = (PangoOpenGLRenderer *)renderer_; |
364 | |
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365 | if (renderer->curtex) |
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366 | glEnd (); |
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367 | |
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368 | glDisable (GL_ALPHA_TEST); |
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369 | glDisable (GL_BLEND); |
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370 | glDisable (GL_TEXTURE_2D); |
|
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371 | } |
393 | } |
372 | |
394 | |
373 | static void |
395 | static void |
374 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
396 | pango_opengl_renderer_class_init (PangoOpenGLRendererClass *klass) |
375 | { |
397 | { |