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_get_destroy_data (pixman_image_t *image)
237 return image->common.destroy_data;
241 _pixman_image_reset_clip_region (pixman_image_t *image)
243 image->common.have_clip_region = FALSE;
247 _pixman_image_validate (pixman_image_t *image)
249 if (image->common.dirty)
251 image->common.property_changed (image);
252 image->common.dirty = FALSE;
255 if (image->common.alpha_map)
256 _pixman_image_validate ((pixman_image_t *)image->common.alpha_map);
259 PIXMAN_EXPORT pixman_bool_t
260 pixman_image_set_clip_region32 (pixman_image_t * image,
261 pixman_region32_t *region)
263 image_common_t *common = (image_common_t *)image;
264 pixman_bool_t result;
268 if ((result = pixman_region32_copy (&common->clip_region, region)))
269 image->common.have_clip_region = TRUE;
273 _pixman_image_reset_clip_region (image);
278 image_property_changed (image);
283 PIXMAN_EXPORT pixman_bool_t
284 pixman_image_set_clip_region (pixman_image_t * image,
285 pixman_region16_t *region)
287 image_common_t *common = (image_common_t *)image;
288 pixman_bool_t result;
292 if ((result = pixman_region32_copy_from_region16 (&common->clip_region, region)))
293 image->common.have_clip_region = TRUE;
297 _pixman_image_reset_clip_region (image);
302 image_property_changed (image);
308 pixman_image_set_has_client_clip (pixman_image_t *image,
309 pixman_bool_t client_clip)
311 image->common.client_clip = client_clip;
314 PIXMAN_EXPORT pixman_bool_t
315 pixman_image_set_transform (pixman_image_t * image,
316 const pixman_transform_t *transform)
318 static const pixman_transform_t id =
320 { { pixman_fixed_1, 0, 0 },
321 { 0, pixman_fixed_1, 0 },
322 { 0, 0, pixman_fixed_1 } }
325 image_common_t *common = (image_common_t *)image;
326 pixman_bool_t result;
328 if (common->transform == transform)
331 if (memcmp (&id, transform, sizeof (pixman_transform_t)) == 0)
333 free (common->transform);
334 common->transform = NULL;
340 if (common->transform == NULL)
341 common->transform = malloc (sizeof (pixman_transform_t));
343 if (common->transform == NULL)
350 memcpy (common->transform, transform, sizeof(pixman_transform_t));
355 image_property_changed (image);
361 pixman_image_set_repeat (pixman_image_t *image,
362 pixman_repeat_t repeat)
364 image->common.repeat = repeat;
366 image_property_changed (image);
369 PIXMAN_EXPORT pixman_bool_t
370 pixman_image_set_filter (pixman_image_t * image,
371 pixman_filter_t filter,
372 const pixman_fixed_t *params,
375 image_common_t *common = (image_common_t *)image;
376 pixman_fixed_t *new_params;
378 if (params == common->filter_params && filter == common->filter)
384 new_params = pixman_malloc_ab (n_params, sizeof (pixman_fixed_t));
389 params, n_params * sizeof (pixman_fixed_t));
392 common->filter = filter;
394 if (common->filter_params)
395 free (common->filter_params);
397 common->filter_params = new_params;
398 common->n_filter_params = n_params;
400 image_property_changed (image);
405 pixman_image_set_source_clipping (pixman_image_t *image,
406 pixman_bool_t clip_sources)
408 image->common.clip_sources = clip_sources;
410 image_property_changed (image);
413 /* Unlike all the other property setters, this function does not
414 * copy the content of indexed. Doing this copying is simply
415 * way, way too expensive.
418 pixman_image_set_indexed (pixman_image_t * image,
419 const pixman_indexed_t *indexed)
421 bits_image_t *bits = (bits_image_t *)image;
423 bits->indexed = indexed;
425 image_property_changed (image);
429 pixman_image_set_alpha_map (pixman_image_t *image,
430 pixman_image_t *alpha_map,
434 image_common_t *common = (image_common_t *)image;
436 return_if_fail (!alpha_map || alpha_map->type == BITS);
438 if (common->alpha_map != (bits_image_t *)alpha_map)
440 if (common->alpha_map)
441 pixman_image_unref ((pixman_image_t *)common->alpha_map);
444 common->alpha_map = (bits_image_t *)pixman_image_ref (alpha_map);
446 common->alpha_map = NULL;
449 common->alpha_origin_x = x;
450 common->alpha_origin_y = y;
452 image_property_changed (image);
456 pixman_image_set_component_alpha (pixman_image_t *image,
457 pixman_bool_t component_alpha)
459 image->common.component_alpha = component_alpha;
461 image_property_changed (image);
465 pixman_image_set_accessors (pixman_image_t * image,
466 pixman_read_memory_func_t read_func,
467 pixman_write_memory_func_t write_func)
469 return_if_fail (image != NULL);
471 if (image->type == BITS)
473 image->bits.read_func = read_func;
474 image->bits.write_func = write_func;
476 image_property_changed (image);
480 PIXMAN_EXPORT uint32_t *
481 pixman_image_get_data (pixman_image_t *image)
483 if (image->type == BITS)
484 return image->bits.bits;
490 pixman_image_get_width (pixman_image_t *image)
492 if (image->type == BITS)
493 return image->bits.width;
499 pixman_image_get_height (pixman_image_t *image)
501 if (image->type == BITS)
502 return image->bits.height;
508 pixman_image_get_stride (pixman_image_t *image)
510 if (image->type == BITS)
511 return image->bits.rowstride * (int) sizeof (uint32_t);
517 pixman_image_get_depth (pixman_image_t *image)
519 if (image->type == BITS)
520 return PIXMAN_FORMAT_DEPTH (image->bits.format);
526 _pixman_image_is_solid (pixman_image_t *image)
528 if (image->type == SOLID)
531 if (image->type != BITS ||
532 image->bits.width != 1 ||
533 image->bits.height != 1)
538 if (image->common.repeat == PIXMAN_REPEAT_NONE)
545 _pixman_image_get_solid (pixman_image_t * image,
546 pixman_format_code_t format)
550 _pixman_image_get_scanline_32 (image, 0, 0, 1, &result, NULL, 0);
552 /* If necessary, convert RGB <--> BGR. */
553 if (PIXMAN_FORMAT_TYPE (format) != PIXMAN_TYPE_ARGB)
555 result = (((result & 0xff000000) >> 0) |
556 ((result & 0x00ff0000) >> 16) |
557 ((result & 0x0000ff00) >> 0) |
558 ((result & 0x000000ff) << 16));
565 _pixman_image_is_opaque (pixman_image_t *image)
569 if (image->common.alpha_map)
575 if (image->common.repeat == PIXMAN_REPEAT_NONE)
578 if (PIXMAN_FORMAT_A (image->bits.format))
584 if (image->common.repeat == PIXMAN_REPEAT_NONE)
587 for (i = 0; i < image->gradient.n_stops; ++i)
589 if (image->gradient.stops[i].color.alpha != 0xffff)
595 /* Conical gradients always have a transparent border */
600 if (image->solid.color.alpha != 0xffff)
609 /* Convolution filters can introduce translucency if the sum of the
610 * weights is lower than 1.
612 if (image->common.filter == PIXMAN_FILTER_CONVOLUTION)