2 * Copyright © 2000 SuSE, Inc.
3 * Copyright © 2007 Red Hat, Inc.
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of SuSE not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission. SuSE makes no representations about the
12 * suitability of this software for any purpose. It is provided "as is"
13 * without express or implied warranty.
15 * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
17 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
19 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
32 #include "pixman-private.h"
33 #include "pixman-combine32.h"
36 _pixman_init_gradient (gradient_t * gradient,
37 const pixman_gradient_stop_t *stops,
40 return_val_if_fail (n_stops > 0, FALSE);
42 gradient->stops = pixman_malloc_ab (n_stops, sizeof (pixman_gradient_stop_t));
46 memcpy (gradient->stops, stops, n_stops * sizeof (pixman_gradient_stop_t));
48 gradient->n_stops = n_stops;
50 gradient->stop_range = 0xffff;
51 gradient->common.class = SOURCE_IMAGE_CLASS_UNKNOWN;
57 * By default, just evaluate the image at 32bpp and expand. Individual image
58 * types can plug in a better scanline getter if they want to. For example
59 * we could produce smoother gradients by evaluating them at higher color
60 * depth, but that's a project for the future.
63 _pixman_image_get_scanline_generic_64 (pixman_image_t * image,
68 const uint32_t * mask,
71 uint32_t *mask8 = NULL;
73 /* Contract the mask image, if one exists, so that the 32-bit fetch
74 * function can use it.
78 mask8 = pixman_malloc_ab (width, sizeof(uint32_t));
82 pixman_contract (mask8, (uint64_t *)mask, width);
85 /* Fetch the source image into the first half of buffer. */
86 _pixman_image_get_scanline_32 (image, x, y, width, (uint32_t*)buffer, mask8,
89 /* Expand from 32bpp to 64bpp in place. */
90 pixman_expand ((uint64_t *)buffer, buffer, PIXMAN_a8r8g8b8, width);
96 _pixman_image_allocate (void)
98 pixman_image_t *image = malloc (sizeof (pixman_image_t));
102 image_common_t *common = &image->common;
104 pixman_region32_init (&common->clip_region);
106 common->have_clip_region = FALSE;
107 common->clip_sources = FALSE;
108 common->transform = NULL;
109 common->repeat = PIXMAN_REPEAT_NONE;
110 common->filter = PIXMAN_FILTER_NEAREST;
111 common->filter_params = NULL;
112 common->n_filter_params = 0;
113 common->alpha_map = NULL;
114 common->component_alpha = FALSE;
115 common->ref_count = 1;
116 common->classify = NULL;
117 common->client_clip = FALSE;
118 common->destroy_func = NULL;
119 common->destroy_data = NULL;
120 common->need_workaround = FALSE;
121 common->dirty = TRUE;
128 _pixman_image_classify (pixman_image_t *image,
134 if (image->common.classify)
135 return image->common.classify (image, x, y, width, height);
137 return SOURCE_IMAGE_CLASS_UNKNOWN;
141 _pixman_image_get_scanline_32 (pixman_image_t *image,
146 const uint32_t *mask,
149 image->common.get_scanline_32 (image, x, y, width, buffer, mask, mask_bits);
152 /* Even thought the type of buffer is uint32_t *, the function actually expects
153 * a uint64_t *buffer.
156 _pixman_image_get_scanline_64 (pixman_image_t *image,
161 const uint32_t *unused,
164 image->common.get_scanline_64 (image, x, y, width, buffer, unused, unused2);
168 image_property_changed (pixman_image_t *image)
170 image->common.dirty = TRUE;
174 PIXMAN_EXPORT pixman_image_t *
175 pixman_image_ref (pixman_image_t *image)
177 image->common.ref_count++;
182 /* returns TRUE when the image is freed */
183 PIXMAN_EXPORT pixman_bool_t
184 pixman_image_unref (pixman_image_t *image)
186 image_common_t *common = (image_common_t *)image;
190 if (common->ref_count == 0)
192 if (image->common.destroy_func)
193 image->common.destroy_func (image, image->common.destroy_data);
195 pixman_region32_fini (&common->clip_region);
197 if (common->transform)
198 free (common->transform);
200 if (common->filter_params)
201 free (common->filter_params);
203 if (common->alpha_map)
204 pixman_image_unref ((pixman_image_t *)common->alpha_map);
206 if (image->type == LINEAR ||
207 image->type == RADIAL ||
208 image->type == CONICAL)
210 if (image->gradient.stops)
211 free (image->gradient.stops);
214 if (image->type == BITS && image->bits.free_me)
215 free (image->bits.free_me);
226 pixman_image_set_destroy_function (pixman_image_t * image,
227 pixman_image_destroy_func_t func,
230 image->common.destroy_func = func;
231 image->common.destroy_data = data;
235 _pixman_image_reset_clip_region (pixman_image_t *image)
237 image->common.have_clip_region = FALSE;
241 _pixman_image_validate (pixman_image_t *image)
243 if (image->common.dirty)
245 image->common.property_changed (image);
246 image->common.dirty = FALSE;
249 if (image->common.alpha_map)
250 _pixman_image_validate ((pixman_image_t *)image->common.alpha_map);
253 PIXMAN_EXPORT pixman_bool_t
254 pixman_image_set_clip_region32 (pixman_image_t * image,
255 pixman_region32_t *region)
257 image_common_t *common = (image_common_t *)image;
258 pixman_bool_t result;
262 if ((result = pixman_region32_copy (&common->clip_region, region)))
263 image->common.have_clip_region = TRUE;
267 _pixman_image_reset_clip_region (image);
272 image_property_changed (image);
277 PIXMAN_EXPORT pixman_bool_t
278 pixman_image_set_clip_region (pixman_image_t * image,
279 pixman_region16_t *region)
281 image_common_t *common = (image_common_t *)image;
282 pixman_bool_t result;
286 if ((result = pixman_region32_copy_from_region16 (&common->clip_region, region)))
287 image->common.have_clip_region = TRUE;
291 _pixman_image_reset_clip_region (image);
296 image_property_changed (image);
302 pixman_image_set_has_client_clip (pixman_image_t *image,
303 pixman_bool_t client_clip)
305 image->common.client_clip = client_clip;
308 PIXMAN_EXPORT pixman_bool_t
309 pixman_image_set_transform (pixman_image_t * image,
310 const pixman_transform_t *transform)
312 static const pixman_transform_t id =
314 { { pixman_fixed_1, 0, 0 },
315 { 0, pixman_fixed_1, 0 },
316 { 0, 0, pixman_fixed_1 } }
319 image_common_t *common = (image_common_t *)image;
320 pixman_bool_t result;
322 if (common->transform == transform)
325 if (memcmp (&id, transform, sizeof (pixman_transform_t)) == 0)
327 free (common->transform);
328 common->transform = NULL;
334 if (common->transform == NULL)
335 common->transform = malloc (sizeof (pixman_transform_t));
337 if (common->transform == NULL)
344 memcpy (common->transform, transform, sizeof(pixman_transform_t));
349 image_property_changed (image);
355 pixman_image_set_repeat (pixman_image_t *image,
356 pixman_repeat_t repeat)
358 image->common.repeat = repeat;
360 image_property_changed (image);
363 PIXMAN_EXPORT pixman_bool_t
364 pixman_image_set_filter (pixman_image_t * image,
365 pixman_filter_t filter,
366 const pixman_fixed_t *params,
369 image_common_t *common = (image_common_t *)image;
370 pixman_fixed_t *new_params;
372 if (params == common->filter_params && filter == common->filter)
378 new_params = pixman_malloc_ab (n_params, sizeof (pixman_fixed_t));
383 params, n_params * sizeof (pixman_fixed_t));
386 common->filter = filter;
388 if (common->filter_params)
389 free (common->filter_params);
391 common->filter_params = new_params;
392 common->n_filter_params = n_params;
394 image_property_changed (image);
399 pixman_image_set_source_clipping (pixman_image_t *image,
400 pixman_bool_t clip_sources)
402 image->common.clip_sources = clip_sources;
404 image_property_changed (image);
407 /* Unlike all the other property setters, this function does not
408 * copy the content of indexed. Doing this copying is simply
409 * way, way too expensive.
412 pixman_image_set_indexed (pixman_image_t * image,
413 const pixman_indexed_t *indexed)
415 bits_image_t *bits = (bits_image_t *)image;
417 bits->indexed = indexed;
419 image_property_changed (image);
423 pixman_image_set_alpha_map (pixman_image_t *image,
424 pixman_image_t *alpha_map,
428 image_common_t *common = (image_common_t *)image;
430 return_if_fail (!alpha_map || alpha_map->type == BITS);
432 if (common->alpha_map != (bits_image_t *)alpha_map)
434 if (common->alpha_map)
435 pixman_image_unref ((pixman_image_t *)common->alpha_map);
438 common->alpha_map = (bits_image_t *)pixman_image_ref (alpha_map);
440 common->alpha_map = NULL;
443 common->alpha_origin_x = x;
444 common->alpha_origin_y = y;
446 image_property_changed (image);
450 pixman_image_set_component_alpha (pixman_image_t *image,
451 pixman_bool_t component_alpha)
453 image->common.component_alpha = component_alpha;
455 image_property_changed (image);
459 pixman_image_set_accessors (pixman_image_t * image,
460 pixman_read_memory_func_t read_func,
461 pixman_write_memory_func_t write_func)
463 return_if_fail (image != NULL);
465 if (image->type == BITS)
467 image->bits.read_func = read_func;
468 image->bits.write_func = write_func;
470 image_property_changed (image);
474 PIXMAN_EXPORT uint32_t *
475 pixman_image_get_data (pixman_image_t *image)
477 if (image->type == BITS)
478 return image->bits.bits;
484 pixman_image_get_width (pixman_image_t *image)
486 if (image->type == BITS)
487 return image->bits.width;
493 pixman_image_get_height (pixman_image_t *image)
495 if (image->type == BITS)
496 return image->bits.height;
502 pixman_image_get_stride (pixman_image_t *image)
504 if (image->type == BITS)
505 return image->bits.rowstride * (int) sizeof (uint32_t);
511 pixman_image_get_depth (pixman_image_t *image)
513 if (image->type == BITS)
514 return PIXMAN_FORMAT_DEPTH (image->bits.format);
520 _pixman_image_is_solid (pixman_image_t *image)
522 if (image->type == SOLID)
525 if (image->type != BITS ||
526 image->bits.width != 1 ||
527 image->bits.height != 1)
532 if (image->common.repeat == PIXMAN_REPEAT_NONE)
539 _pixman_image_get_solid (pixman_image_t * image,
540 pixman_format_code_t format)
544 _pixman_image_get_scanline_32 (image, 0, 0, 1, &result, NULL, 0);
546 /* If necessary, convert RGB <--> BGR. */
547 if (PIXMAN_FORMAT_TYPE (format) != PIXMAN_TYPE_ARGB)
549 result = (((result & 0xff000000) >> 0) |
550 ((result & 0x00ff0000) >> 16) |
551 ((result & 0x0000ff00) >> 0) |
552 ((result & 0x000000ff) << 16));
559 _pixman_image_is_opaque (pixman_image_t *image)
563 if (image->common.alpha_map)
569 if (image->common.repeat == PIXMAN_REPEAT_NONE)
572 if (PIXMAN_FORMAT_A (image->bits.format))
578 if (image->common.repeat == PIXMAN_REPEAT_NONE)
581 for (i = 0; i < image->gradient.n_stops; ++i)
583 if (image->gradient.stops[i].color.alpha != 0xffff)
589 /* Conical gradients always have a transparent border */
594 if (image->solid.color.alpha != 0xffff)
603 /* Convolution filters can introduce translucency if the sum of the
604 * weights is lower than 1.
606 if (image->common.filter == PIXMAN_FILTER_CONVOLUTION)