mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
synced 2026-05-21 06:18:10 +02:00
296 lines
7.3 KiB
C
296 lines
7.3 KiB
C
/*
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* Copyright © 2000 Keith Packard
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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 Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "icint.h"
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typedef void (*FillFunc) (pixman_image_t *dst,
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int16_t xDst,
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int16_t yDst,
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uint16_t width,
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uint16_t height,
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pixman_bits_t *pixel);
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static void
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pixman_fill_rect_8bpp (pixman_image_t *dst,
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int16_t xDst,
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int16_t yDst,
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uint16_t width,
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uint16_t height,
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pixman_bits_t *pixel)
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{
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char *line;
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line = (char *)dst->pixels->data +
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xDst + yDst * dst->pixels->stride;
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while (height-- > 0) {
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memset (line, *(char *)pixel, width);
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line += dst->pixels->stride;
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}
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}
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static void
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pixman_fill_rect_32bpp (pixman_image_t *dst,
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int16_t xDst,
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int16_t yDst,
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uint16_t width,
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uint16_t height,
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pixman_bits_t *pixel)
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{
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uint32_t int_pixel;
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char *line;
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char *data;
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int w;
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line = (char *)dst->pixels->data +
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xDst * 4 + yDst * dst->pixels->stride;
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int_pixel = *(uint32_t *)pixel;
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while (height-- > 0) {
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data = line;
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w = width;
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while (w-- > 0) {
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*(uint32_t *)data = int_pixel;
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data += 4;
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}
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line += dst->pixels->stride;
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}
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}
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static void
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pixman_fill_rect_general (pixman_image_t *dst,
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int16_t xDst,
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int16_t yDst,
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uint16_t width,
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uint16_t height,
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pixman_bits_t *pixel)
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{
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int pixel_size;
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char *line;
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char *data;
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int w;
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pixel_size = dst->pixels->bpp >> 3;
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line = (char *)dst->pixels->data +
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xDst * pixel_size + yDst * dst->pixels->stride;
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while (height-- > 0) {
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data = line;
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w = width;
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while (w-- > 0) {
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memcpy (data, pixel, pixel_size);
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data += pixel_size;
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}
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line += dst->pixels->stride;
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}
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}
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static void
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pixman_color_rects (pixman_image_t *dst,
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pixman_image_t *clipPict,
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pixman_color_t *color,
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int nRect,
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pixman_rectangle_t *rects,
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int xoff,
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int yoff)
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{
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pixman_bits_t pixel;
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pixman_region16_t *clip;
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pixman_region16_t *rects_as_region;
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pixman_box16_t *clipped_rects;
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int i, n_clipped_rects;
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FillFunc func;
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pixman_color_to_pixel (&dst->image_format,
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color,
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&pixel);
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/* offset to the right place on the destination image */
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xoff -= dst->pixels->x;
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yoff -= dst->pixels->y;
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clip = pixman_region_create();
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pixman_region_union_rect (clip, clip,
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dst->pixels->x, dst->pixels->y,
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dst->pixels->width, dst->pixels->height);
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pixman_region_intersect (clip, clip, clipPict->pCompositeClip);
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if (clipPict->alphaMap)
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{
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pixman_region_translate (clip,
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-clipPict->alphaOrigin.x,
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-clipPict->alphaOrigin.y);
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pixman_region_intersect (clip, clip, clipPict->alphaMap->pCompositeClip);
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pixman_region_translate (clip,
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clipPict->alphaOrigin.x,
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clipPict->alphaOrigin.y);
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}
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if (clipPict->clientClipType != CT_NONE)
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pixman_region_intersect (clip, clip, clipPict->clientClip);
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if (xoff || yoff)
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{
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for (i = 0; i < nRect; i++)
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{
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rects[i].x -= xoff;
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rects[i].y -= yoff;
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}
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}
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rects_as_region = pixman_region_create ();
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for (i = 0; i < nRect; i++)
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{
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pixman_region_union_rect (rects_as_region, rects_as_region,
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rects[i].x, rects[i].y,
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rects[i].width, rects[i].height);
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}
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pixman_region_intersect (rects_as_region, rects_as_region, clip);
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pixman_region_destroy (clip);
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n_clipped_rects = pixman_region_num_rects (rects_as_region);
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clipped_rects = pixman_region_rects (rects_as_region);
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if (dst->pixels->bpp == 8)
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func = pixman_fill_rect_8bpp;
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else if (dst->pixels->bpp == 32)
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func = pixman_fill_rect_32bpp;
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else
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func = pixman_fill_rect_general;
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for (i = 0; i < n_clipped_rects; i++) {
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(*func) (dst,
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clipped_rects[i].x1,
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clipped_rects[i].y1,
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clipped_rects[i].x2 - clipped_rects[i].x1,
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clipped_rects[i].y2 - clipped_rects[i].y1,
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&pixel);
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}
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pixman_region_destroy (rects_as_region);
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if (xoff || yoff)
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{
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for (i = 0; i < nRect; i++)
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{
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rects[i].x += xoff;
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rects[i].y += yoff;
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}
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}
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}
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void pixman_fill_rectangle (pixman_operator_t op,
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pixman_image_t *dst,
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const pixman_color_t *color,
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int x,
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int y,
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unsigned int width,
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unsigned int height)
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{
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pixman_rectangle_t rect;
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rect.x = x;
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rect.y = y;
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rect.width = width;
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rect.height = height;
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pixman_fill_rectangles (op, dst, color, &rect, 1);
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}
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void
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pixman_fill_rectangles (pixman_operator_t op,
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pixman_image_t *dst,
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const pixman_color_t *color,
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const pixman_rectangle_t *rects,
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int nRects)
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{
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pixman_color_t color_s = *color;
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if (color_s.alpha == 0xffff)
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{
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if (op == PIXMAN_OPERATOR_OVER)
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op = PIXMAN_OPERATOR_SRC;
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}
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if (op == PIXMAN_OPERATOR_CLEAR)
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color_s.red = color_s.green = color_s.blue = color_s.alpha = 0;
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if (op == PIXMAN_OPERATOR_SRC || op == PIXMAN_OPERATOR_CLEAR)
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{
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/* We cast away the constness of rects here, because pixman_color_rects
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temporarily modifies it */
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pixman_color_rects (dst, dst, &color_s, nRects, (pixman_rectangle_t *)rects, 0, 0);
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if (dst->alphaMap)
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pixman_color_rects (dst->alphaMap, dst,
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&color_s, nRects, (pixman_rectangle_t *)rects,
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dst->alphaOrigin.x,
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dst->alphaOrigin.y);
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}
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else
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{
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pixman_format_t rgbaFormat;
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IcPixels *pixels;
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pixman_image_t *src;
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pixman_bits_t pixel;
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pixman_format_init (&rgbaFormat, PICT_a8r8g8b8);
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pixels = IcPixelsCreate (1, 1, rgbaFormat.depth);
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if (!pixels)
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goto bail1;
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pixman_color_to_pixel (&rgbaFormat, &color_s, &pixel);
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/* XXX: Originally, fb had the following:
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(*pGC->ops->PolyFillRect) (&pPixmap->drawable, pGC, 1, &one);
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I haven't checked to see what I might be breaking with a
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trivial assignment instead.
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*/
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pixels->data[0] = pixel;
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src = pixman_image_createForPixels (pixels, &rgbaFormat);
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if (!src)
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goto bail2;
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pixman_image_set_repeat (src, 1);
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while (nRects--)
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{
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pixman_composite (op, src, 0, dst, 0, 0, 0, 0,
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rects->x,
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rects->y,
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rects->width,
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rects->height);
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rects++;
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}
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pixman_image_destroy (src);
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bail2:
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IcPixelsDestroy (pixels);
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bail1:
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;
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}
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}
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slim_hidden_def(pixman_fill_rectangles);
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