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comparison src/paint.c @ 265:b42ee279669e

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Change function name and add comments. - sh_image_set_geometry() to replace sh_image_set(). - page "Image and Image Loader". - comments. diff -r 1ed06481e9ea img/image_n_ldr.dia Binary file img/image_n_ldr.dia has changed diff -r 1ed06481e9ea img/image_n_ldr.png Binary file img/image_n_ldr.png has changed
author Thinker K.F. Li <thinker@branda.to>
date Sat, 24 Jan 2009 15:09:03 +0800
parents 29acbd8a0dd0
children 43900cae1d49
comparison
equal deleted inserted replaced
264:1ed06481e9ea 265:b42ee279669e
243 243
244 return old_stops; 244 return old_stops;
245 } 245 }
246 246
247 247
248 /*! \brief Using an image as a paint.
249 *
250 * This type of paints fill/stroke shapes with an image.
251 */
248 typedef struct _paint_image { 252 typedef struct _paint_image {
249 paint_t paint; 253 paint_t paint;
250 mb_img_data_t *img; 254 mb_img_data_t *img;
251 cairo_surface_t *surf; 255 cairo_surface_t *surf;
252 cairo_pattern_t *ptn; 256 cairo_pattern_t *ptn;
271 MB_IMG_DATA_FREE(img_data); 275 MB_IMG_DATA_FREE(img_data);
272 paint_destroy(&paint_img->paint); 276 paint_destroy(&paint_img->paint);
273 free(paint); 277 free(paint);
274 } 278 }
275 279
280 /*! \brief Create an image painter.
281 *
282 * Create a painter that fill/stroke shapes with an image.
283 */
276 paint_t *rdman_paint_image_new(redraw_man_t *rdman, 284 paint_t *rdman_paint_image_new(redraw_man_t *rdman,
277 mb_img_data_t *img) { 285 mb_img_data_t *img) {
278 paint_image_t *paint; 286 paint_image_t *paint;
279 int fmt; 287 int fmt;
280 288
321 } 329 }
322 330
323 return (paint_t *)paint; 331 return (paint_t *)paint;
324 } 332 }
325 333
334 /*! \brief Setting transformation from user space to image space.
335 *
336 * This transformation matrix maps points drawed in user space to
337 * corresponding points in image space. It is used to resample
338 * the image to generate pixels of result image.
339 */
326 void paint_image_set_matrix(paint_t *paint, co_aix matrix[6]) { 340 void paint_image_set_matrix(paint_t *paint, co_aix matrix[6]) {
327 paint_image_t *img_paint = (paint_image_t *)paint; 341 paint_image_t *img_paint = (paint_image_t *)paint;
328 cairo_matrix_t cmatrix; 342 cairo_matrix_t cmatrix;
329 343
330 cmatrix.xx = matrix[0]; 344 cmatrix.xx = matrix[0];