| /* |
| * Copyright © 2000 SuSE, Inc. |
| * Copyright © 2007 Red Hat, Inc. |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and its |
| * documentation for any purpose is hereby granted without fee, provided that |
| * the above copyright notice appear in all copies and that both that |
| * copyright notice and this permission notice appear in supporting |
| * documentation, and that the name of SuSE not be used in advertising or |
| * publicity pertaining to distribution of the software without specific, |
| * written prior permission. SuSE makes no representations about the |
| * suitability of this software for any purpose. It is provided "as is" |
| * without express or implied warranty. |
| * |
| * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE |
| * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <config.h> |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "pixman.h" |
| #include "pixman-private.h" |
| |
| static void |
| init_source_image (source_image_t *image) |
| { |
| image->class = SOURCE_IMAGE_CLASS_UNKNOWN; |
| } |
| |
| static pixman_bool_t |
| init_gradient (gradient_t *gradient, |
| const pixman_gradient_stop_t *stops, |
| int n_stops) |
| { |
| return_val_if_fail (n_stops > 0, FALSE); |
| |
| init_source_image (&gradient->common); |
| |
| gradient->stops = pixman_malloc_ab (n_stops, sizeof (pixman_gradient_stop_t)); |
| if (!gradient->stops) |
| return FALSE; |
| |
| memcpy (gradient->stops, stops, n_stops * sizeof (pixman_gradient_stop_t)); |
| |
| gradient->n_stops = n_stops; |
| |
| gradient->stop_range = 0xffff; |
| gradient->color_table = NULL; |
| gradient->color_table_size = 0; |
| |
| return TRUE; |
| } |
| |
| static uint32_t |
| color_to_uint32 (const pixman_color_t *color) |
| { |
| return |
| (color->alpha >> 8 << 24) | |
| (color->red >> 8 << 16) | |
| (color->green & 0xff00) | |
| (color->blue >> 8); |
| } |
| |
| static pixman_image_t * |
| allocate_image (void) |
| { |
| pixman_image_t *image = malloc (sizeof (pixman_image_t)); |
| |
| if (image) |
| { |
| image_common_t *common = &image->common; |
| |
| pixman_region_init (&common->full_region); |
| pixman_region_init (&common->clip_region); |
| common->src_clip = &common->full_region; |
| common->has_client_clip = FALSE; |
| common->transform = NULL; |
| common->repeat = PIXMAN_REPEAT_NONE; |
| common->filter = PIXMAN_FILTER_NEAREST; |
| common->filter_params = NULL; |
| common->n_filter_params = 0; |
| common->alpha_map = NULL; |
| common->component_alpha = FALSE; |
| common->ref_count = 1; |
| common->read_func = NULL; |
| common->write_func = NULL; |
| } |
| |
| return image; |
| } |
| |
| /* Ref Counting */ |
| pixman_image_t * |
| pixman_image_ref (pixman_image_t *image) |
| { |
| image->common.ref_count++; |
| |
| return image; |
| } |
| |
| void |
| pixman_image_unref (pixman_image_t *image) |
| { |
| image_common_t *common = (image_common_t *)image; |
| |
| common->ref_count--; |
| |
| if (common->ref_count == 0) |
| { |
| pixman_region_fini (&common->clip_region); |
| pixman_region_fini (&common->full_region); |
| |
| if (common->transform) |
| free (common->transform); |
| |
| if (common->filter_params) |
| free (common->filter_params); |
| |
| if (common->alpha_map) |
| pixman_image_unref ((pixman_image_t *)common->alpha_map); |
| |
| #if 0 |
| if (image->type == BITS && image->bits.indexed) |
| free (image->bits.indexed); |
| #endif |
| |
| #if 0 |
| memset (image, 0xaa, sizeof (pixman_image_t)); |
| #endif |
| if (image->type == LINEAR || image->type == RADIAL || image->type == CONICAL) |
| { |
| if (image->gradient.stops) |
| free (image->gradient.stops); |
| } |
| |
| |
| if (image->type == BITS && image->bits.free_me) |
| free (image->bits.free_me); |
| |
| free (image); |
| } |
| } |
| |
| /* Constructors */ |
| pixman_image_t * |
| pixman_image_create_solid_fill (pixman_color_t *color) |
| { |
| pixman_image_t *img = allocate_image(); |
| if (!img) |
| return NULL; |
| |
| init_source_image (&img->solid.common); |
| |
| img->type = SOLID; |
| img->solid.color = color_to_uint32 (color); |
| |
| return img; |
| } |
| |
| pixman_image_t * |
| pixman_image_create_linear_gradient (pixman_point_fixed_t *p1, |
| pixman_point_fixed_t *p2, |
| const pixman_gradient_stop_t *stops, |
| int n_stops) |
| { |
| pixman_image_t *image; |
| linear_gradient_t *linear; |
| |
| return_val_if_fail (n_stops >= 2, NULL); |
| |
| image = allocate_image(); |
| |
| if (!image) |
| return NULL; |
| |
| linear = &image->linear; |
| |
| if (!init_gradient (&linear->common, stops, n_stops)) |
| { |
| free (image); |
| return NULL; |
| } |
| |
| linear->p1 = *p1; |
| linear->p2 = *p2; |
| |
| image->type = LINEAR; |
| |
| return image; |
| } |
| |
| |
| pixman_image_t * |
| pixman_image_create_radial_gradient (pixman_point_fixed_t *inner, |
| pixman_point_fixed_t *outer, |
| pixman_fixed_t inner_radius, |
| pixman_fixed_t outer_radius, |
| const pixman_gradient_stop_t *stops, |
| int n_stops) |
| { |
| pixman_image_t *image; |
| radial_gradient_t *radial; |
| |
| return_val_if_fail (n_stops >= 2, NULL); |
| |
| image = allocate_image(); |
| |
| if (!image) |
| return NULL; |
| |
| radial = &image->radial; |
| |
| if (!init_gradient (&radial->common, stops, n_stops)) |
| { |
| free (image); |
| return NULL; |
| } |
| |
| image->type = RADIAL; |
| |
| radial->c1.x = inner->x; |
| radial->c1.y = inner->y; |
| radial->c1.radius = inner_radius; |
| radial->c2.x = outer->x; |
| radial->c2.y = outer->y; |
| radial->c2.radius = outer_radius; |
| radial->cdx = pixman_fixed_to_double (radial->c2.x - radial->c1.x); |
| radial->cdy = pixman_fixed_to_double (radial->c2.y - radial->c1.y); |
| radial->dr = pixman_fixed_to_double (radial->c2.radius - radial->c1.radius); |
| radial->A = (radial->cdx * radial->cdx |
| + radial->cdy * radial->cdy |
| - radial->dr * radial->dr); |
| |
| return image; |
| } |
| |
| pixman_image_t * |
| pixman_image_create_conical_gradient (pixman_point_fixed_t *center, |
| pixman_fixed_t angle, |
| const pixman_gradient_stop_t *stops, |
| int n_stops) |
| { |
| pixman_image_t *image = allocate_image(); |
| conical_gradient_t *conical; |
| |
| if (!image) |
| return NULL; |
| |
| conical = &image->conical; |
| |
| if (!init_gradient (&conical->common, stops, n_stops)) |
| { |
| free (image); |
| return NULL; |
| } |
| |
| image->type = CONICAL; |
| conical->center = *center; |
| conical->angle = angle; |
| |
| return image; |
| } |
| |
| static uint32_t * |
| create_bits (pixman_format_code_t format, |
| int width, |
| int height, |
| int *rowstride_bytes) |
| { |
| int stride; |
| int buf_size; |
| int bpp; |
| |
| bpp = PIXMAN_FORMAT_BPP (format); |
| stride = ((width * bpp + FB_MASK) >> FB_SHIFT) * sizeof (uint32_t); |
| buf_size = height * stride; |
| |
| if (rowstride_bytes) |
| *rowstride_bytes = stride; |
| |
| return calloc (buf_size, 1); |
| } |
| |
| static void |
| reset_clip_region (pixman_image_t *image) |
| { |
| pixman_region_fini (&image->common.clip_region); |
| |
| if (image->type == BITS) |
| { |
| pixman_region_init_rect (&image->common.clip_region, 0, 0, |
| image->bits.width, image->bits.height); |
| } |
| else |
| { |
| pixman_region_init (&image->common.clip_region); |
| } |
| } |
| |
| pixman_image_t * |
| pixman_image_create_bits (pixman_format_code_t format, |
| int width, |
| int height, |
| uint32_t *bits, |
| int rowstride_bytes) |
| { |
| pixman_image_t *image; |
| uint32_t *free_me = NULL; |
| |
| /* must be a whole number of uint32_t's |
| */ |
| return_val_if_fail (bits == NULL || |
| (rowstride_bytes % sizeof (uint32_t)) == 0, NULL); |
| |
| if (!bits) |
| { |
| free_me = bits = create_bits (format, width, height, &rowstride_bytes); |
| if (!bits) |
| return NULL; |
| } |
| |
| image = allocate_image(); |
| |
| if (!image) |
| return NULL; |
| |
| image->type = BITS; |
| image->bits.format = format; |
| image->bits.width = width; |
| image->bits.height = height; |
| image->bits.bits = bits; |
| image->bits.free_me = free_me; |
| |
| image->bits.rowstride = rowstride_bytes / sizeof (uint32_t); /* we store it in number |
| * of uint32_t's |
| */ |
| image->bits.indexed = NULL; |
| |
| pixman_region_fini (&image->common.full_region); |
| pixman_region_init_rect (&image->common.full_region, 0, 0, |
| image->bits.width, image->bits.height); |
| |
| reset_clip_region (image); |
| return image; |
| } |
| |
| pixman_bool_t |
| pixman_image_set_clip_region (pixman_image_t *image, |
| pixman_region16_t *region) |
| { |
| image_common_t *common = (image_common_t *)image; |
| |
| if (region) |
| { |
| return pixman_region_copy (&common->clip_region, region); |
| } |
| else |
| { |
| reset_clip_region (image); |
| |
| return TRUE; |
| } |
| } |
| |
| /* Sets whether the clip region includes a clip region set by the client |
| */ |
| void |
| pixman_image_set_has_client_clip (pixman_image_t *image, |
| pixman_bool_t client_clip) |
| { |
| image->common.has_client_clip = client_clip; |
| } |
| |
| 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; |
| |
| if (common->transform == transform) |
| return TRUE; |
| |
| if (memcmp (&id, transform, sizeof (pixman_transform_t)) == 0) |
| { |
| transform = NULL; |
| return TRUE; |
| } |
| |
| if (common->transform) |
| free (common->transform); |
| |
| if (transform) |
| { |
| common->transform = malloc (sizeof (pixman_transform_t)); |
| if (!common->transform) |
| return FALSE; |
| |
| *common->transform = *transform; |
| } |
| else |
| { |
| common->transform = NULL; |
| } |
| |
| return TRUE; |
| } |
| |
| void |
| pixman_image_set_repeat (pixman_image_t *image, |
| pixman_repeat_t repeat) |
| { |
| image->common.repeat = repeat; |
| } |
| |
| 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; |
| |
| 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; |
| return TRUE; |
| } |
| |
| /* Unlike all the other property setters, this function does not |
| * copy the content of indexed. Doing this copying is simply |
| * way, way too expensive. |
| */ |
| void |
| pixman_image_set_indexed (pixman_image_t *image, |
| const pixman_indexed_t *indexed) |
| { |
| bits_image_t *bits = (bits_image_t *)image; |
| |
| bits->indexed = indexed; |
| } |
| |
| 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 (common->alpha_map != (bits_image_t *)alpha_map) |
| { |
| if (common->alpha_map) |
| pixman_image_unref ((pixman_image_t *)common->alpha_map); |
| |
| if (alpha_map) |
| common->alpha_map = (bits_image_t *)pixman_image_ref (alpha_map); |
| else |
| common->alpha_map = NULL; |
| } |
| |
| common->alpha_origin.x = x; |
| common->alpha_origin.y = y; |
| } |
| |
| void |
| pixman_image_set_component_alpha (pixman_image_t *image, |
| pixman_bool_t component_alpha) |
| { |
| image->common.component_alpha = component_alpha; |
| } |
| |
| |
| 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); |
| |
| image->common.read_func = read_func; |
| image->common.write_func = write_func; |
| } |
| |
| uint32_t * |
| pixman_image_get_data (pixman_image_t *image) |
| { |
| if (image->type == BITS) |
| return image->bits.bits; |
| |
| return NULL; |
| } |
| |
| int |
| pixman_image_get_width (pixman_image_t *image) |
| { |
| if (image->type == BITS) |
| return image->bits.width; |
| |
| return 0; |
| } |
| |
| int |
| pixman_image_get_height (pixman_image_t *image) |
| { |
| if (image->type == BITS) |
| return image->bits.height; |
| |
| return 0; |
| } |
| |
| int |
| pixman_image_get_stride (pixman_image_t *image) |
| { |
| if (image->type == BITS) |
| return image->bits.rowstride * sizeof (uint32_t); |
| |
| return 0; |
| } |
| |
| int |
| pixman_image_get_depth (pixman_image_t *image) |
| { |
| if (image->type == BITS) |
| return PIXMAN_FORMAT_DEPTH (image->bits.format); |
| |
| return 0; |
| } |
| |
| pixman_bool_t |
| color_to_pixel (pixman_color_t *color, |
| uint32_t *pixel, |
| pixman_format_code_t format) |
| { |
| uint32_t c = color_to_uint32 (color); |
| |
| if (!(format == PIXMAN_a8r8g8b8 || |
| format == PIXMAN_x8r8g8b8 || |
| format == PIXMAN_a8b8g8r8 || |
| format == PIXMAN_x8b8g8r8 || |
| format == PIXMAN_r5g6b5 || |
| format == PIXMAN_b5g6r5 || |
| format == PIXMAN_a8)) |
| { |
| return FALSE; |
| } |
| |
| if (PIXMAN_FORMAT_TYPE (format) == PIXMAN_TYPE_ABGR) |
| { |
| c = ((c & 0xff000000) >> 0) | |
| ((c & 0x00ff0000) >> 16) | |
| ((c & 0x0000ff00) >> 0) | |
| ((c & 0x000000ff) << 16); |
| } |
| |
| if (format == PIXMAN_a8) |
| c = c >> 24; |
| else if (format == PIXMAN_r5g6b5 || |
| format == PIXMAN_b5g6r5) |
| c = cvt8888to0565 (c); |
| |
| #if 0 |
| printf ("color: %x %x %x %x\n", color->alpha, color->red, color->green, color->blue); |
| printf ("pixel: %x\n", c); |
| #endif |
| |
| *pixel = c; |
| return TRUE; |
| } |
| |
| pixman_bool_t |
| pixman_image_fill_rectangles (pixman_op_t op, |
| pixman_image_t *dest, |
| pixman_color_t *color, |
| int n_rects, |
| const pixman_rectangle16_t *rects) |
| { |
| pixman_image_t *solid; |
| pixman_color_t c; |
| int i; |
| |
| if (color->alpha == 0xffff) |
| { |
| if (op == PIXMAN_OP_OVER) |
| op = PIXMAN_OP_SRC; |
| } |
| |
| if (op == PIXMAN_OP_CLEAR) |
| { |
| c.red = 0; |
| c.green = 0; |
| c.blue = 0; |
| c.alpha = 0; |
| |
| color = &c; |
| |
| op = PIXMAN_OP_SRC; |
| } |
| |
| if (op == PIXMAN_OP_SRC) |
| { |
| uint32_t pixel; |
| |
| if (color_to_pixel (color, &pixel, dest->bits.format)) |
| { |
| for (i = 0; i < n_rects; ++i) |
| { |
| pixman_region16_t fill_region; |
| int n_boxes, j; |
| pixman_box16_t *boxes; |
| |
| pixman_region_init_rect (&fill_region, rects[i].x, rects[i].y, rects[i].width, rects[i].height); |
| pixman_region_intersect (&fill_region, &fill_region, &dest->common.clip_region); |
| |
| boxes = pixman_region_rectangles (&fill_region, &n_boxes); |
| for (j = 0; j < n_boxes; ++j) |
| { |
| const pixman_box16_t *box = &(boxes[j]); |
| pixman_fill (dest->bits.bits, dest->bits.rowstride, PIXMAN_FORMAT_BPP (dest->bits.format), |
| box->x1, box->y1, box->x2 - box->x1, box->y2 - box->y1, |
| pixel); |
| } |
| |
| pixman_region_fini (&fill_region); |
| } |
| return TRUE; |
| } |
| } |
| |
| solid = pixman_image_create_solid_fill (color); |
| if (!solid) |
| return FALSE; |
| |
| for (i = 0; i < n_rects; ++i) |
| { |
| const pixman_rectangle16_t *rect = &(rects[i]); |
| |
| pixman_image_composite (op, solid, NULL, dest, |
| 0, 0, 0, 0, |
| rect->x, rect->y, |
| rect->width, rect->height); |
| } |
| |
| pixman_image_unref (solid); |
| |
| return TRUE; |
| } |