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/*
* Copyright © 2002 University of Southern California
*
* 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 the
* University of Southern California not be used in advertising or
* publicity pertaining to distribution of the software without
* specific, written prior permission. The University of Southern
* California makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THE UNIVERSITY OF SOUTHERN CALIFORNIA DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE UNIVERSITY OF
* SOUTHERN CALIFORNIA 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.
*
* Author: Carl D. Worth <cworth@isi.edu>
*/
#include <stdlib.h>
#include "cairoint.h"
void
_cairo_surface_init (cairo_surface_t *surface,
const cairo_surface_backend_t *backend)
{
surface->backend = backend;
surface->ref_count = 1;
_cairo_matrix_init (&surface->matrix);
surface->filter = CAIRO_FILTER_NEAREST;
surface->repeat = 0;
}
cairo_surface_t *
cairo_surface_create_for_image (char *data,
cairo_format_t format,
int width,
int height,
int stride)
{
return cairo_image_surface_create_for_data (data, format, width, height, stride);
}
slim_hidden_def(cairo_surface_create_for_image);
cairo_surface_t *
_cairo_surface_create_similar_scratch (cairo_surface_t *other,
cairo_format_t format,
int drawable,
int width,
int height)
{
if (other == NULL)
return NULL;
return other->backend->create_similar (other, format, drawable,
width, height);
}
cairo_surface_t *
cairo_surface_create_similar (cairo_surface_t *other,
cairo_format_t format,
int width,
int height)
{
cairo_color_t empty;
if (other == NULL)
return NULL;
_cairo_color_init (&empty);
_cairo_color_set_rgb (&empty, 0., 0., 0.);
_cairo_color_set_alpha (&empty, 0.);
return _cairo_surface_create_similar_solid (other, format, width, height, &empty);
}
cairo_surface_t *
_cairo_surface_create_similar_solid (cairo_surface_t *other,
cairo_format_t format,
int width,
int height,
cairo_color_t *color)
{
cairo_status_t status;
cairo_surface_t *surface;
surface = _cairo_surface_create_similar_scratch (other, format, 1,
width, height);
if (surface == NULL)
surface = cairo_image_surface_create (format, width, height);
status = _cairo_surface_fill_rectangle (surface,
CAIRO_OPERATOR_SRC, color,
0, 0, width, height);
if (status) {
cairo_surface_destroy (surface);
return NULL;
}
return surface;
}
void
cairo_surface_reference (cairo_surface_t *surface)
{
if (surface == NULL)
return;
surface->ref_count++;
}
void
cairo_surface_destroy (cairo_surface_t *surface)
{
if (surface == NULL)
return;
surface->ref_count--;
if (surface->ref_count)
return;
if (surface->backend->destroy)
surface->backend->destroy (surface);
}
slim_hidden_def(cairo_surface_destroy);
double
_cairo_surface_pixels_per_inch (cairo_surface_t *surface)
{
return surface->backend->pixels_per_inch (surface);
}
cairo_image_surface_t *
_cairo_surface_get_image (cairo_surface_t *surface)
{
return surface->backend->get_image (surface);
}
cairo_status_t
_cairo_surface_set_image (cairo_surface_t *surface, cairo_image_surface_t *image)
{
return surface->backend->set_image (surface, image);
}
cairo_status_t
cairo_surface_set_matrix (cairo_surface_t *surface, cairo_matrix_t *matrix)
{
if (surface == NULL)
return CAIRO_STATUS_NULL_POINTER;
cairo_matrix_copy (&surface->matrix, matrix);
return surface->backend->set_matrix (surface, matrix);
}
slim_hidden_def(cairo_surface_set_matrix);
cairo_status_t
cairo_surface_get_matrix (cairo_surface_t *surface, cairo_matrix_t *matrix)
{
if (surface == NULL)
return CAIRO_STATUS_NULL_POINTER;
return cairo_matrix_copy (matrix, &surface->matrix);
}
slim_hidden_def(cairo_surface_get_matrix);
cairo_status_t
cairo_surface_set_filter (cairo_surface_t *surface, cairo_filter_t filter)
{
if (surface == NULL)
return CAIRO_STATUS_NULL_POINTER;
surface->filter = filter;
return surface->backend->set_filter (surface, filter);
}
cairo_filter_t
cairo_surface_get_filter (cairo_surface_t *surface)
{
return surface->filter;
}
/* XXX: NYI
cairo_status_t
cairo_surface_clip_rectangle (cairo_surface_t *surface,
int x, int y,
int width, int height)
{
}
*/
/* XXX: NYI
cairo_status_t
cairo_surface_clip_restore (cairo_surface_t *surface);
*/
cairo_status_t
cairo_surface_set_repeat (cairo_surface_t *surface, int repeat)
{
if (surface == NULL)
return CAIRO_STATUS_NULL_POINTER;
surface->repeat = repeat;
return surface->backend->set_repeat (surface, repeat);
}
slim_hidden_def(cairo_surface_set_repeat);
cairo_status_t
_cairo_surface_composite (cairo_operator_t operator,
cairo_surface_t *src,
cairo_surface_t *mask,
cairo_surface_t *dst,
int src_x,
int src_y,
int mask_x,
int mask_y,
int dst_x,
int dst_y,
unsigned int width,
unsigned int height)
{
cairo_int_status_t status;
cairo_image_surface_t *src_image, *mask_image = 0, *dst_image;
status = dst->backend->composite (operator,
src, mask, dst,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
src_image = _cairo_surface_get_image (src);
if (mask)
mask_image = _cairo_surface_get_image (mask);
dst_image = _cairo_surface_get_image (dst);
dst_image->base.backend->composite (operator,
&src_image->base,
mask ? &mask_image->base : NULL,
dst_image,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
status = _cairo_surface_set_image (dst, dst_image);
cairo_surface_destroy (&src_image->base);
if (mask)
cairo_surface_destroy (&mask_image->base);
cairo_surface_destroy (&dst_image->base);
return status;
}
cairo_status_t
_cairo_surface_fill_rectangle (cairo_surface_t *surface,
cairo_operator_t operator,
cairo_color_t *color,
int x,
int y,
int width,
int height)
{
cairo_rectangle_t rect;
rect.x = x;
rect.y = y;
rect.width = width;
rect.height = height;
return _cairo_surface_fill_rectangles (surface, operator, color, &rect, 1);
}
cairo_status_t
_cairo_surface_fill_rectangles (cairo_surface_t *surface,
cairo_operator_t operator,
const cairo_color_t *color,
cairo_rectangle_t *rects,
int num_rects)
{
cairo_int_status_t status;
cairo_image_surface_t *surface_image;
if (num_rects == 0)
return CAIRO_STATUS_SUCCESS;
status = surface->backend->fill_rectangles (surface,
operator,
color,
rects, num_rects);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
surface_image = _cairo_surface_get_image (surface);
surface_image->base.backend->fill_rectangles (surface_image,
operator,
color,
rects, num_rects);
status = _cairo_surface_set_image (surface, surface_image);
cairo_surface_destroy (&surface_image->base);
return status;
}
cairo_status_t
_cairo_surface_composite_trapezoids (cairo_operator_t operator,
cairo_surface_t *src,
cairo_surface_t *dst,
int x_src,
int y_src,
cairo_trapezoid_t *traps,
int num_traps)
{
cairo_int_status_t status;
cairo_image_surface_t *src_image, *dst_image;
status = dst->backend->composite_trapezoids (operator,
src, dst,
x_src, y_src,
traps, num_traps);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
src_image = _cairo_surface_get_image (src);
dst_image = _cairo_surface_get_image (dst);
dst_image->base.backend->composite_trapezoids (operator,
&src_image->base,
dst_image,
x_src, y_src,
traps, num_traps);
status = _cairo_surface_set_image (dst, dst_image);
cairo_surface_destroy (&src_image->base);
cairo_surface_destroy (&dst_image->base);
return status;
}
cairo_status_t
_cairo_surface_copy_page (cairo_surface_t *surface)
{
cairo_int_status_t status;
status = surface->backend->copy_page (surface);
/* It's fine if some backends just don't support this. */
if (status == CAIRO_INT_STATUS_UNSUPPORTED)
return CAIRO_STATUS_SUCCESS;
if (status)
return status;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
_cairo_surface_show_page (cairo_surface_t *surface)
{
cairo_int_status_t status;
status = surface->backend->show_page (surface);
/* It's fine if some backends just don't support this. */
if (status == CAIRO_INT_STATUS_UNSUPPORTED)
return CAIRO_STATUS_SUCCESS;
if (status)
return status;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
_cairo_surface_set_clip_region (cairo_surface_t *surface, pixman_region16_t *region)
{
return surface->backend->set_clip_region (surface, region);
}
cairo_status_t
_cairo_surface_create_pattern (cairo_surface_t *surface,
cairo_pattern_t *pattern,
cairo_box_t *box)
{
cairo_int_status_t status;
status = surface->backend->create_pattern (surface, pattern, box);
/* The backend cannot accelerate this pattern, lets create an
unaccelerated source instead. */
if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
status = CAIRO_STATUS_SUCCESS;
switch (pattern->type) {
case CAIRO_PATTERN_LINEAR:
case CAIRO_PATTERN_RADIAL: {
cairo_image_surface_t *image;
image = _cairo_pattern_get_image (pattern, box);
if (image) {
pattern->source = &image->base;
return CAIRO_STATUS_SUCCESS;
} else
return CAIRO_STATUS_NO_MEMORY;
} break;
case CAIRO_PATTERN_SOLID:
pattern->source =
_cairo_surface_create_similar_solid (surface,
CAIRO_FORMAT_ARGB32,
1, 1,
&pattern->color);
if (pattern->source) {
cairo_surface_set_repeat (pattern->source, 1);
return CAIRO_STATUS_SUCCESS;
} else
return CAIRO_STATUS_NO_MEMORY;
break;
case CAIRO_PATTERN_SURFACE:
status = CAIRO_INT_STATUS_UNSUPPORTED;
/* handle pattern opacity */
if (pattern->color.alpha != 1.0) {
double x = box->p1.x >> 16;
double y = box->p1.y >> 16;
int width = ((box->p2.x + 65535) >> 16) - (box->p1.x >> 16);
int height = ((box->p2.y + 65535) >> 16) - (box->p1.y >> 16);
cairo_pattern_t alpha;
pattern->source =
cairo_surface_create_similar (surface,
CAIRO_FORMAT_ARGB32,
width, height);
if (pattern->source) {
_cairo_pattern_init_solid (&alpha, 1.0, 1.0, 1.0);
_cairo_pattern_set_alpha (&alpha, pattern->color.alpha);
status = _cairo_surface_create_pattern (pattern->source,
&alpha, box);
if (status == CAIRO_STATUS_SUCCESS) {
int save_repeat = pattern->u.surface.surface->repeat;
if (pattern->extend == CAIRO_EXTEND_REPEAT ||
pattern->u.surface.surface->repeat == 1)
cairo_surface_set_repeat (pattern->u.surface.surface, 1);
else
cairo_surface_set_repeat (pattern->u.surface.surface, 0);
status =
_cairo_surface_composite (CAIRO_OPERATOR_OVER,
pattern->u.surface.surface,
alpha.source,
pattern->source,
0, 0, 0, 0, 0, 0,
width, height);
cairo_surface_set_repeat (pattern->u.surface.surface,
save_repeat);
if (status == CAIRO_STATUS_SUCCESS)
_cairo_pattern_set_source_offset (pattern, x, y);
else
cairo_surface_destroy (pattern->source);
}
_cairo_pattern_fini (&alpha);
}
}
if (status != CAIRO_STATUS_SUCCESS) {
pattern->source = pattern->u.surface.surface;
cairo_surface_reference (pattern->u.surface.surface);
return CAIRO_STATUS_SUCCESS;
}
break;
}
}
return status;
}
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