941 lines
23 KiB
C
941 lines
23 KiB
C
/*
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* Copyright © 2000 SuSE, Inc.
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* Copyright © 2007 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "pixman-private.h"
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static const pixman_color_t transparent_black = { 0, 0, 0, 0 };
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static void
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gradient_property_changed (pixman_image_t *image)
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{
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gradient_t *gradient = &image->gradient;
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int n = gradient->n_stops;
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pixman_gradient_stop_t *stops = gradient->stops;
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pixman_gradient_stop_t *begin = &(gradient->stops[-1]);
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pixman_gradient_stop_t *end = &(gradient->stops[n]);
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switch (gradient->common.repeat)
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{
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default:
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case PIXMAN_REPEAT_NONE:
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begin->x = INT32_MIN;
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begin->color = transparent_black;
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end->x = INT32_MAX;
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end->color = transparent_black;
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break;
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case PIXMAN_REPEAT_NORMAL:
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begin->x = stops[n - 1].x - pixman_fixed_1;
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begin->color = stops[n - 1].color;
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end->x = stops[0].x + pixman_fixed_1;
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end->color = stops[0].color;
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break;
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case PIXMAN_REPEAT_REFLECT:
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begin->x = - stops[0].x;
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begin->color = stops[0].color;
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end->x = pixman_int_to_fixed (2) - stops[n - 1].x;
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end->color = stops[n - 1].color;
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break;
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case PIXMAN_REPEAT_PAD:
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begin->x = INT32_MIN;
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begin->color = stops[0].color;
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end->x = INT32_MAX;
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end->color = stops[n - 1].color;
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break;
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}
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}
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pixman_bool_t
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_pixman_init_gradient (gradient_t * gradient,
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const pixman_gradient_stop_t *stops,
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int n_stops)
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{
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return_val_if_fail (n_stops > 0, FALSE);
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/* We allocate two extra stops, one before the beginning of the stop list,
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* and one after the end. These stops are initialized to whatever color
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* would be used for positions outside the range of the stop list.
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*
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* This saves a bit of computation in the gradient walker.
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*
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* The pointer we store in the gradient_t struct still points to the
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* first user-supplied struct, so when freeing, we will have to
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* subtract one.
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*/
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gradient->stops =
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pixman_malloc_ab (n_stops + 2, sizeof (pixman_gradient_stop_t));
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if (!gradient->stops)
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return FALSE;
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gradient->stops += 1;
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memcpy (gradient->stops, stops, n_stops * sizeof (pixman_gradient_stop_t));
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gradient->n_stops = n_stops;
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gradient->common.property_changed = gradient_property_changed;
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return TRUE;
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}
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void
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_pixman_image_init (pixman_image_t *image)
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{
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image_common_t *common = &image->common;
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pixman_region32_init (&common->clip_region);
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common->alpha_count = 0;
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common->have_clip_region = FALSE;
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common->clip_sources = FALSE;
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common->transform = NULL;
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common->repeat = PIXMAN_REPEAT_NONE;
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common->filter = PIXMAN_FILTER_NEAREST;
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common->filter_params = NULL;
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common->n_filter_params = 0;
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common->alpha_map = NULL;
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common->component_alpha = FALSE;
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common->ref_count = 1;
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common->property_changed = NULL;
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common->client_clip = FALSE;
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common->destroy_func = NULL;
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common->destroy_data = NULL;
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common->dirty = TRUE;
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}
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pixman_bool_t
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_pixman_image_fini (pixman_image_t *image)
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{
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image_common_t *common = (image_common_t *)image;
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common->ref_count--;
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if (common->ref_count == 0)
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{
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if (image->common.destroy_func)
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image->common.destroy_func (image, image->common.destroy_data);
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pixman_region32_fini (&common->clip_region);
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free (common->transform);
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free (common->filter_params);
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if (common->alpha_map)
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pixman_image_unref ((pixman_image_t *)common->alpha_map);
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if (image->type == LINEAR ||
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image->type == RADIAL ||
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image->type == CONICAL)
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{
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if (image->gradient.stops)
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{
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/* See _pixman_init_gradient() for an explanation of the - 1 */
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free (image->gradient.stops - 1);
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}
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/* This will trigger if someone adds a property_changed
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* method to the linear/radial/conical gradient overwriting
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* the general one.
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*/
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assert (
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image->common.property_changed == gradient_property_changed);
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}
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if (image->type == BITS && image->bits.free_me)
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free (image->bits.free_me);
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return TRUE;
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}
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return FALSE;
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}
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pixman_image_t *
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_pixman_image_allocate (void)
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{
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pixman_image_t *image = malloc (sizeof (pixman_image_t));
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if (image)
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_pixman_image_init (image);
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return image;
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}
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static void
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image_property_changed (pixman_image_t *image)
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{
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image->common.dirty = TRUE;
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}
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/* Ref Counting */
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PIXMAN_EXPORT pixman_image_t *
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pixman_image_ref (pixman_image_t *image)
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{
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image->common.ref_count++;
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return image;
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}
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/* returns TRUE when the image is freed */
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PIXMAN_EXPORT pixman_bool_t
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pixman_image_unref (pixman_image_t *image)
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{
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if (_pixman_image_fini (image))
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{
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free (image);
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return TRUE;
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}
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return FALSE;
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}
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PIXMAN_EXPORT void
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pixman_image_set_destroy_function (pixman_image_t * image,
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pixman_image_destroy_func_t func,
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void * data)
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{
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image->common.destroy_func = func;
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image->common.destroy_data = data;
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}
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PIXMAN_EXPORT void *
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pixman_image_get_destroy_data (pixman_image_t *image)
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{
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return image->common.destroy_data;
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}
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void
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_pixman_image_reset_clip_region (pixman_image_t *image)
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{
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image->common.have_clip_region = FALSE;
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}
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/* Executive Summary: This function is a no-op that only exists
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* for historical reasons.
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*
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* There used to be a bug in the X server where it would rely on
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* out-of-bounds accesses when it was asked to composite with a
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* window as the source. It would create a pixman image pointing
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* to some bogus position in memory, but then set a clip region
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* to the position where the actual bits were.
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*
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* Due to a bug in old versions of pixman, where it would not clip
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* against the image bounds when a clip region was set, this would
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* actually work. So when the pixman bug was fixed, a workaround was
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* added to allow certain out-of-bound accesses. This function disabled
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* those workarounds.
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*
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* Since 0.21.2, pixman doesn't do these workarounds anymore, so now
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* this function is a no-op.
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*/
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PIXMAN_EXPORT void
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pixman_disable_out_of_bounds_workaround (void)
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{
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}
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static void
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compute_image_info (pixman_image_t *image)
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{
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pixman_format_code_t code;
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uint32_t flags = 0;
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/* Transform */
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if (!image->common.transform)
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{
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flags |= (FAST_PATH_ID_TRANSFORM |
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FAST_PATH_X_UNIT_POSITIVE |
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FAST_PATH_Y_UNIT_ZERO |
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FAST_PATH_AFFINE_TRANSFORM);
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}
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else
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{
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flags |= FAST_PATH_HAS_TRANSFORM;
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if (image->common.transform->matrix[2][0] == 0 &&
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image->common.transform->matrix[2][1] == 0 &&
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image->common.transform->matrix[2][2] == pixman_fixed_1)
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{
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flags |= FAST_PATH_AFFINE_TRANSFORM;
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if (image->common.transform->matrix[0][1] == 0 &&
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image->common.transform->matrix[1][0] == 0)
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{
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if (image->common.transform->matrix[0][0] == -pixman_fixed_1 &&
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image->common.transform->matrix[1][1] == -pixman_fixed_1)
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{
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flags |= FAST_PATH_ROTATE_180_TRANSFORM;
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}
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flags |= FAST_PATH_SCALE_TRANSFORM;
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}
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else if (image->common.transform->matrix[0][0] == 0 &&
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image->common.transform->matrix[1][1] == 0)
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{
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pixman_fixed_t m01 = image->common.transform->matrix[0][1];
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pixman_fixed_t m10 = image->common.transform->matrix[1][0];
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if (m01 == -pixman_fixed_1 && m10 == pixman_fixed_1)
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flags |= FAST_PATH_ROTATE_90_TRANSFORM;
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else if (m01 == pixman_fixed_1 && m10 == -pixman_fixed_1)
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flags |= FAST_PATH_ROTATE_270_TRANSFORM;
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}
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}
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if (image->common.transform->matrix[0][0] > 0)
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flags |= FAST_PATH_X_UNIT_POSITIVE;
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if (image->common.transform->matrix[1][0] == 0)
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flags |= FAST_PATH_Y_UNIT_ZERO;
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}
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/* Filter */
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switch (image->common.filter)
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{
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case PIXMAN_FILTER_NEAREST:
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case PIXMAN_FILTER_FAST:
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flags |= (FAST_PATH_NEAREST_FILTER | FAST_PATH_NO_CONVOLUTION_FILTER);
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break;
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case PIXMAN_FILTER_BILINEAR:
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case PIXMAN_FILTER_GOOD:
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case PIXMAN_FILTER_BEST:
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flags |= (FAST_PATH_BILINEAR_FILTER | FAST_PATH_NO_CONVOLUTION_FILTER);
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/* Here we have a chance to optimize BILINEAR filter to NEAREST if
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* they are equivalent for the currently used transformation matrix.
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*/
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if (flags & FAST_PATH_ID_TRANSFORM)
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{
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flags |= FAST_PATH_NEAREST_FILTER;
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}
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else if (
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/* affine and integer translation components in matrix ... */
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((flags & FAST_PATH_AFFINE_TRANSFORM) &&
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!pixman_fixed_frac (image->common.transform->matrix[0][2] |
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image->common.transform->matrix[1][2])) &&
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(
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/* ... combined with a simple rotation */
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(flags & (FAST_PATH_ROTATE_90_TRANSFORM |
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FAST_PATH_ROTATE_180_TRANSFORM |
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FAST_PATH_ROTATE_270_TRANSFORM)) ||
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/* ... or combined with a simple non-rotated translation */
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(image->common.transform->matrix[0][0] == pixman_fixed_1 &&
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image->common.transform->matrix[1][1] == pixman_fixed_1 &&
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image->common.transform->matrix[0][1] == 0 &&
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image->common.transform->matrix[1][0] == 0)
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)
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)
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{
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/* FIXME: there are some affine-test failures, showing that
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* handling of BILINEAR and NEAREST filter is not quite
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* equivalent when getting close to 32K for the translation
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* components of the matrix. That's likely some bug, but for
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* now just skip BILINEAR->NEAREST optimization in this case.
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*/
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pixman_fixed_t magic_limit = pixman_int_to_fixed (30000);
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if (image->common.transform->matrix[0][2] <= magic_limit &&
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image->common.transform->matrix[1][2] <= magic_limit &&
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image->common.transform->matrix[0][2] >= -magic_limit &&
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image->common.transform->matrix[1][2] >= -magic_limit)
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{
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flags |= FAST_PATH_NEAREST_FILTER;
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}
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}
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break;
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case PIXMAN_FILTER_CONVOLUTION:
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break;
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case PIXMAN_FILTER_SEPARABLE_CONVOLUTION:
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flags |= FAST_PATH_SEPARABLE_CONVOLUTION_FILTER;
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break;
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default:
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flags |= FAST_PATH_NO_CONVOLUTION_FILTER;
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break;
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}
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/* Repeat mode */
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switch (image->common.repeat)
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{
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case PIXMAN_REPEAT_NONE:
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flags |=
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FAST_PATH_NO_REFLECT_REPEAT |
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FAST_PATH_NO_PAD_REPEAT |
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FAST_PATH_NO_NORMAL_REPEAT;
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break;
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case PIXMAN_REPEAT_REFLECT:
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flags |=
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FAST_PATH_NO_PAD_REPEAT |
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FAST_PATH_NO_NONE_REPEAT |
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FAST_PATH_NO_NORMAL_REPEAT;
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break;
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case PIXMAN_REPEAT_PAD:
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flags |=
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FAST_PATH_NO_REFLECT_REPEAT |
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FAST_PATH_NO_NONE_REPEAT |
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FAST_PATH_NO_NORMAL_REPEAT;
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break;
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default:
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flags |=
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FAST_PATH_NO_REFLECT_REPEAT |
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FAST_PATH_NO_PAD_REPEAT |
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FAST_PATH_NO_NONE_REPEAT;
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break;
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}
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/* Component alpha */
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if (image->common.component_alpha)
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flags |= FAST_PATH_COMPONENT_ALPHA;
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else
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flags |= FAST_PATH_UNIFIED_ALPHA;
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flags |= (FAST_PATH_NO_ACCESSORS | FAST_PATH_NARROW_FORMAT);
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/* Type specific checks */
|
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switch (image->type)
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{
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case SOLID:
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code = PIXMAN_solid;
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if (image->solid.color.alpha == 0xffff)
|
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flags |= FAST_PATH_IS_OPAQUE;
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break;
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case BITS:
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if (image->bits.width == 1 &&
|
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image->bits.height == 1 &&
|
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image->common.repeat != PIXMAN_REPEAT_NONE)
|
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{
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code = PIXMAN_solid;
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}
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else
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{
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code = image->bits.format;
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flags |= FAST_PATH_BITS_IMAGE;
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}
|
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|
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if (!PIXMAN_FORMAT_A (image->bits.format) &&
|
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PIXMAN_FORMAT_TYPE (image->bits.format) != PIXMAN_TYPE_GRAY &&
|
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PIXMAN_FORMAT_TYPE (image->bits.format) != PIXMAN_TYPE_COLOR)
|
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{
|
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flags |= FAST_PATH_SAMPLES_OPAQUE;
|
|
|
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if (image->common.repeat != PIXMAN_REPEAT_NONE)
|
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flags |= FAST_PATH_IS_OPAQUE;
|
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}
|
|
|
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if (image->bits.read_func || image->bits.write_func)
|
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flags &= ~FAST_PATH_NO_ACCESSORS;
|
|
|
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if (PIXMAN_FORMAT_IS_WIDE (image->bits.format))
|
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flags &= ~FAST_PATH_NARROW_FORMAT;
|
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break;
|
|
|
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case RADIAL:
|
|
code = PIXMAN_unknown;
|
|
|
|
/*
|
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* As explained in pixman-radial-gradient.c, every point of
|
|
* the plane has a valid associated radius (and thus will be
|
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* colored) if and only if a is negative (i.e. one of the two
|
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* circles contains the other one).
|
|
*/
|
|
|
|
if (image->radial.a >= 0)
|
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break;
|
|
|
|
/* Fall through */
|
|
|
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case CONICAL:
|
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case LINEAR:
|
|
code = PIXMAN_unknown;
|
|
|
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if (image->common.repeat != PIXMAN_REPEAT_NONE)
|
|
{
|
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int i;
|
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|
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flags |= FAST_PATH_IS_OPAQUE;
|
|
for (i = 0; i < image->gradient.n_stops; ++i)
|
|
{
|
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if (image->gradient.stops[i].color.alpha != 0xffff)
|
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{
|
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flags &= ~FAST_PATH_IS_OPAQUE;
|
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break;
|
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}
|
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}
|
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}
|
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break;
|
|
|
|
default:
|
|
code = PIXMAN_unknown;
|
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break;
|
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}
|
|
|
|
/* Alpha map */
|
|
if (!image->common.alpha_map)
|
|
{
|
|
flags |= FAST_PATH_NO_ALPHA_MAP;
|
|
}
|
|
else
|
|
{
|
|
if (PIXMAN_FORMAT_IS_WIDE (image->common.alpha_map->format))
|
|
flags &= ~FAST_PATH_NARROW_FORMAT;
|
|
}
|
|
|
|
/* Both alpha maps and convolution filters can introduce
|
|
* non-opaqueness in otherwise opaque images. Also
|
|
* an image with component alpha turned on is only opaque
|
|
* if all channels are opaque, so we simply turn it off
|
|
* unconditionally for those images.
|
|
*/
|
|
if (image->common.alpha_map ||
|
|
image->common.filter == PIXMAN_FILTER_CONVOLUTION ||
|
|
image->common.filter == PIXMAN_FILTER_SEPARABLE_CONVOLUTION ||
|
|
image->common.component_alpha)
|
|
{
|
|
flags &= ~(FAST_PATH_IS_OPAQUE | FAST_PATH_SAMPLES_OPAQUE);
|
|
}
|
|
|
|
image->common.flags = flags;
|
|
image->common.extended_format_code = code;
|
|
}
|
|
|
|
void
|
|
_pixman_image_validate (pixman_image_t *image)
|
|
{
|
|
if (image->common.dirty)
|
|
{
|
|
compute_image_info (image);
|
|
|
|
/* It is important that property_changed is
|
|
* called *after* compute_image_info() because
|
|
* property_changed() can make use of the flags
|
|
* to set up accessors etc.
|
|
*/
|
|
if (image->common.property_changed)
|
|
image->common.property_changed (image);
|
|
|
|
image->common.dirty = FALSE;
|
|
}
|
|
|
|
if (image->common.alpha_map)
|
|
_pixman_image_validate ((pixman_image_t *)image->common.alpha_map);
|
|
}
|
|
|
|
PIXMAN_EXPORT pixman_bool_t
|
|
pixman_image_set_clip_region32 (pixman_image_t * image,
|
|
pixman_region32_t *region)
|
|
{
|
|
image_common_t *common = (image_common_t *)image;
|
|
pixman_bool_t result;
|
|
|
|
if (region)
|
|
{
|
|
if ((result = pixman_region32_copy (&common->clip_region, region)))
|
|
image->common.have_clip_region = TRUE;
|
|
}
|
|
else
|
|
{
|
|
_pixman_image_reset_clip_region (image);
|
|
|
|
result = TRUE;
|
|
}
|
|
|
|
image_property_changed (image);
|
|
|
|
return result;
|
|
}
|
|
|
|
PIXMAN_EXPORT pixman_bool_t
|
|
pixman_image_set_clip_region (pixman_image_t * image,
|
|
pixman_region16_t *region)
|
|
{
|
|
image_common_t *common = (image_common_t *)image;
|
|
pixman_bool_t result;
|
|
|
|
if (region)
|
|
{
|
|
if ((result = pixman_region32_copy_from_region16 (&common->clip_region, region)))
|
|
image->common.have_clip_region = TRUE;
|
|
}
|
|
else
|
|
{
|
|
_pixman_image_reset_clip_region (image);
|
|
|
|
result = TRUE;
|
|
}
|
|
|
|
image_property_changed (image);
|
|
|
|
return result;
|
|
}
|
|
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_has_client_clip (pixman_image_t *image,
|
|
pixman_bool_t client_clip)
|
|
{
|
|
image->common.client_clip = client_clip;
|
|
}
|
|
|
|
PIXMAN_EXPORT pixman_bool_t
|
|
pixman_image_set_transform (pixman_image_t * image,
|
|
const pixman_transform_t *transform)
|
|
{
|
|
static const pixman_transform_t id =
|
|
{
|
|
{ { pixman_fixed_1, 0, 0 },
|
|
{ 0, pixman_fixed_1, 0 },
|
|
{ 0, 0, pixman_fixed_1 } }
|
|
};
|
|
|
|
image_common_t *common = (image_common_t *)image;
|
|
pixman_bool_t result;
|
|
|
|
if (common->transform == transform)
|
|
return TRUE;
|
|
|
|
if (!transform || memcmp (&id, transform, sizeof (pixman_transform_t)) == 0)
|
|
{
|
|
free (common->transform);
|
|
common->transform = NULL;
|
|
result = TRUE;
|
|
|
|
goto out;
|
|
}
|
|
|
|
if (common->transform &&
|
|
memcmp (common->transform, transform, sizeof (pixman_transform_t)) == 0)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
if (common->transform == NULL)
|
|
common->transform = malloc (sizeof (pixman_transform_t));
|
|
|
|
if (common->transform == NULL)
|
|
{
|
|
result = FALSE;
|
|
|
|
goto out;
|
|
}
|
|
|
|
memcpy (common->transform, transform, sizeof(pixman_transform_t));
|
|
|
|
result = TRUE;
|
|
|
|
out:
|
|
image_property_changed (image);
|
|
|
|
return result;
|
|
}
|
|
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_repeat (pixman_image_t *image,
|
|
pixman_repeat_t repeat)
|
|
{
|
|
if (image->common.repeat == repeat)
|
|
return;
|
|
|
|
image->common.repeat = repeat;
|
|
|
|
image_property_changed (image);
|
|
}
|
|
|
|
PIXMAN_EXPORT pixman_bool_t
|
|
pixman_image_set_filter (pixman_image_t * image,
|
|
pixman_filter_t filter,
|
|
const pixman_fixed_t *params,
|
|
int n_params)
|
|
{
|
|
image_common_t *common = (image_common_t *)image;
|
|
pixman_fixed_t *new_params;
|
|
|
|
if (params == common->filter_params && filter == common->filter)
|
|
return TRUE;
|
|
|
|
if (filter == PIXMAN_FILTER_SEPARABLE_CONVOLUTION)
|
|
{
|
|
int width = pixman_fixed_to_int (params[0]);
|
|
int height = pixman_fixed_to_int (params[1]);
|
|
int x_phase_bits = pixman_fixed_to_int (params[2]);
|
|
int y_phase_bits = pixman_fixed_to_int (params[3]);
|
|
int n_x_phases = (1 << x_phase_bits);
|
|
int n_y_phases = (1 << y_phase_bits);
|
|
|
|
return_val_if_fail (
|
|
n_params == 4 + n_x_phases * width + n_y_phases * height, FALSE);
|
|
}
|
|
|
|
new_params = NULL;
|
|
if (params)
|
|
{
|
|
new_params = pixman_malloc_ab (n_params, sizeof (pixman_fixed_t));
|
|
if (!new_params)
|
|
return FALSE;
|
|
|
|
memcpy (new_params,
|
|
params, n_params * sizeof (pixman_fixed_t));
|
|
}
|
|
|
|
common->filter = filter;
|
|
|
|
if (common->filter_params)
|
|
free (common->filter_params);
|
|
|
|
common->filter_params = new_params;
|
|
common->n_filter_params = n_params;
|
|
|
|
image_property_changed (image);
|
|
return TRUE;
|
|
}
|
|
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_source_clipping (pixman_image_t *image,
|
|
pixman_bool_t clip_sources)
|
|
{
|
|
if (image->common.clip_sources == clip_sources)
|
|
return;
|
|
|
|
image->common.clip_sources = clip_sources;
|
|
|
|
image_property_changed (image);
|
|
}
|
|
|
|
/* Unlike all the other property setters, this function does not
|
|
* copy the content of indexed. Doing this copying is simply
|
|
* way, way too expensive.
|
|
*/
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_indexed (pixman_image_t * image,
|
|
const pixman_indexed_t *indexed)
|
|
{
|
|
bits_image_t *bits = (bits_image_t *)image;
|
|
|
|
if (bits->indexed == indexed)
|
|
return;
|
|
|
|
bits->indexed = indexed;
|
|
|
|
image_property_changed (image);
|
|
}
|
|
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_alpha_map (pixman_image_t *image,
|
|
pixman_image_t *alpha_map,
|
|
int16_t x,
|
|
int16_t y)
|
|
{
|
|
image_common_t *common = (image_common_t *)image;
|
|
|
|
return_if_fail (!alpha_map || alpha_map->type == BITS);
|
|
|
|
if (alpha_map && common->alpha_count > 0)
|
|
{
|
|
/* If this image is being used as an alpha map itself,
|
|
* then you can't give it an alpha map of its own.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
if (alpha_map && alpha_map->common.alpha_map)
|
|
{
|
|
/* If the image has an alpha map of its own,
|
|
* then it can't be used as an alpha map itself
|
|
*/
|
|
return;
|
|
}
|
|
|
|
if (common->alpha_map != (bits_image_t *)alpha_map)
|
|
{
|
|
if (common->alpha_map)
|
|
{
|
|
common->alpha_map->common.alpha_count--;
|
|
|
|
pixman_image_unref ((pixman_image_t *)common->alpha_map);
|
|
}
|
|
|
|
if (alpha_map)
|
|
{
|
|
common->alpha_map = (bits_image_t *)pixman_image_ref (alpha_map);
|
|
|
|
common->alpha_map->common.alpha_count++;
|
|
}
|
|
else
|
|
{
|
|
common->alpha_map = NULL;
|
|
}
|
|
}
|
|
|
|
common->alpha_origin_x = x;
|
|
common->alpha_origin_y = y;
|
|
|
|
image_property_changed (image);
|
|
}
|
|
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_component_alpha (pixman_image_t *image,
|
|
pixman_bool_t component_alpha)
|
|
{
|
|
if (image->common.component_alpha == component_alpha)
|
|
return;
|
|
|
|
image->common.component_alpha = component_alpha;
|
|
|
|
image_property_changed (image);
|
|
}
|
|
|
|
PIXMAN_EXPORT pixman_bool_t
|
|
pixman_image_get_component_alpha (pixman_image_t *image)
|
|
{
|
|
return image->common.component_alpha;
|
|
}
|
|
|
|
PIXMAN_EXPORT void
|
|
pixman_image_set_accessors (pixman_image_t * image,
|
|
pixman_read_memory_func_t read_func,
|
|
pixman_write_memory_func_t write_func)
|
|
{
|
|
return_if_fail (image != NULL);
|
|
|
|
if (image->type == BITS)
|
|
{
|
|
image->bits.read_func = read_func;
|
|
image->bits.write_func = write_func;
|
|
|
|
image_property_changed (image);
|
|
}
|
|
}
|
|
|
|
PIXMAN_EXPORT uint32_t *
|
|
pixman_image_get_data (pixman_image_t *image)
|
|
{
|
|
if (image->type == BITS)
|
|
return image->bits.bits;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
PIXMAN_EXPORT int
|
|
pixman_image_get_width (pixman_image_t *image)
|
|
{
|
|
if (image->type == BITS)
|
|
return image->bits.width;
|
|
|
|
return 0;
|
|
}
|
|
|
|
PIXMAN_EXPORT int
|
|
pixman_image_get_height (pixman_image_t *image)
|
|
{
|
|
if (image->type == BITS)
|
|
return image->bits.height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
PIXMAN_EXPORT int
|
|
pixman_image_get_stride (pixman_image_t *image)
|
|
{
|
|
if (image->type == BITS)
|
|
return image->bits.rowstride * (int) sizeof (uint32_t);
|
|
|
|
return 0;
|
|
}
|
|
|
|
PIXMAN_EXPORT int
|
|
pixman_image_get_depth (pixman_image_t *image)
|
|
{
|
|
if (image->type == BITS)
|
|
return PIXMAN_FORMAT_DEPTH (image->bits.format);
|
|
|
|
return 0;
|
|
}
|
|
|
|
PIXMAN_EXPORT pixman_format_code_t
|
|
pixman_image_get_format (pixman_image_t *image)
|
|
{
|
|
if (image->type == BITS)
|
|
return image->bits.format;
|
|
|
|
return PIXMAN_null;
|
|
}
|
|
|
|
uint32_t
|
|
_pixman_image_get_solid (pixman_implementation_t *imp,
|
|
pixman_image_t * image,
|
|
pixman_format_code_t format)
|
|
{
|
|
uint32_t result;
|
|
|
|
if (image->type == SOLID)
|
|
{
|
|
result = image->solid.color_32;
|
|
}
|
|
else if (image->type == BITS)
|
|
{
|
|
if (image->bits.format == PIXMAN_a8r8g8b8)
|
|
result = image->bits.bits[0];
|
|
else if (image->bits.format == PIXMAN_x8r8g8b8)
|
|
result = image->bits.bits[0] | 0xff000000;
|
|
else if (image->bits.format == PIXMAN_a8)
|
|
result = (*(uint8_t *)image->bits.bits) << 24;
|
|
else
|
|
goto otherwise;
|
|
}
|
|
else
|
|
{
|
|
pixman_iter_t iter;
|
|
|
|
otherwise:
|
|
_pixman_implementation_src_iter_init (
|
|
imp, &iter, image, 0, 0, 1, 1,
|
|
(uint8_t *)&result,
|
|
ITER_NARROW, image->common.flags);
|
|
|
|
result = *iter.get_scanline (&iter, NULL);
|
|
}
|
|
|
|
/* If necessary, convert RGB <--> BGR. */
|
|
if (PIXMAN_FORMAT_TYPE (format) != PIXMAN_TYPE_ARGB
|
|
&& PIXMAN_FORMAT_TYPE (format) != PIXMAN_TYPE_ARGB_SRGB)
|
|
{
|
|
result = (((result & 0xff000000) >> 0) |
|
|
((result & 0x00ff0000) >> 16) |
|
|
((result & 0x0000ff00) >> 0) |
|
|
((result & 0x000000ff) << 16));
|
|
}
|
|
|
|
return result;
|
|
}
|