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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2003 University of Southern California
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Carl D. Worth <cworth@isi.edu>
*/
#include "cairoint.h"
static const cairo_surface_backend_t cairo_image_surface_backend;
static int
_cairo_format_bpp (cairo_format_t format)
{
switch (format) {
case CAIRO_FORMAT_A1:
return 1;
case CAIRO_FORMAT_A8:
return 8;
case CAIRO_FORMAT_RGB24:
case CAIRO_FORMAT_ARGB32:
default:
return 32;
}
}
static cairo_image_surface_t *
_cairo_image_surface_create_for_pixman_image (pixman_image_t *pixman_image)
{
cairo_image_surface_t *surface;
surface = malloc (sizeof (cairo_image_surface_t));
if (surface == NULL)
return NULL;
_cairo_surface_init (&surface->base, &cairo_image_surface_backend);
surface->pixman_image = pixman_image;
surface->data = (char *) pixman_image_get_data (pixman_image);
surface->owns_data = 0;
surface->width = pixman_image_get_width (pixman_image);
surface->height = pixman_image_get_height (pixman_image);
surface->stride = pixman_image_get_stride (pixman_image);
surface->depth = pixman_image_get_depth (pixman_image);
return surface;
}
cairo_image_surface_t *
_cairo_image_surface_create_with_masks (char *data,
cairo_format_masks_t *format,
int width,
int height,
int stride)
{
cairo_image_surface_t *surface;
pixman_format_t *pixman_format;
pixman_image_t *pixman_image;
pixman_format = pixman_format_create_masks (format->bpp,
format->alpha_mask,
format->red_mask,
format->green_mask,
format->blue_mask);
if (pixman_format == NULL)
return NULL;
pixman_image = pixman_image_create_for_data ((pixman_bits_t *) data, pixman_format,
width, height, format->bpp, stride);
pixman_format_destroy (pixman_format);
if (pixman_image == NULL)
return NULL;
surface = _cairo_image_surface_create_for_pixman_image (pixman_image);
return surface;
}
static pixman_format_t *
_create_pixman_format (cairo_format_t format)
{
switch (format) {
case CAIRO_FORMAT_A1:
return pixman_format_create (PIXMAN_FORMAT_NAME_A1);
break;
case CAIRO_FORMAT_A8:
return pixman_format_create (PIXMAN_FORMAT_NAME_A8);
break;
case CAIRO_FORMAT_RGB24:
return pixman_format_create (PIXMAN_FORMAT_NAME_RGB24);
break;
case CAIRO_FORMAT_ARGB32:
default:
return pixman_format_create (PIXMAN_FORMAT_NAME_ARGB32);
break;
}
}
cairo_surface_t *
cairo_image_surface_create (cairo_format_t format,
int width,
int height)
{
cairo_image_surface_t *surface;
pixman_format_t *pixman_format;
pixman_image_t *pixman_image;
pixman_format = _create_pixman_format (format);
if (pixman_format == NULL)
return NULL;
pixman_image = pixman_image_create (pixman_format, width, height);
pixman_format_destroy (pixman_format);
if (pixman_image == NULL)
return NULL;
surface = _cairo_image_surface_create_for_pixman_image (pixman_image);
return &surface->base;
}
cairo_surface_t *
cairo_image_surface_create_for_data (char *data,
cairo_format_t format,
int width,
int height,
int stride)
{
cairo_image_surface_t *surface;
pixman_format_t *pixman_format;
pixman_image_t *pixman_image;
pixman_format = _create_pixman_format (format);
if (pixman_format == NULL)
return NULL;
pixman_image = pixman_image_create_for_data ((pixman_bits_t *) data, pixman_format,
width, height,
_cairo_format_bpp (format),
stride);
pixman_format_destroy (pixman_format);
if (pixman_image == NULL)
return NULL;
surface = _cairo_image_surface_create_for_pixman_image (pixman_image);
return &surface->base;
}
static cairo_surface_t *
_cairo_image_surface_create_similar (void *abstract_src,
cairo_format_t format,
int drawable,
int width,
int height)
{
return cairo_image_surface_create (format, width, height);
}
static void
_cairo_image_abstract_surface_destroy (void *abstract_surface)
{
cairo_image_surface_t *surface = abstract_surface;
if (surface->pixman_image)
pixman_image_destroy (surface->pixman_image);
if (surface->owns_data) {
free (surface->data);
surface->data = NULL;
}
free (surface);
}
void
_cairo_image_surface_assume_ownership_of_data (cairo_image_surface_t *surface)
{
surface->owns_data = 1;
}
static double
_cairo_image_surface_pixels_per_inch (void *abstract_surface)
{
/* XXX: We'll want a way to let the user set this. */
return 96.0;
}
static cairo_image_surface_t *
_cairo_image_surface_get_image (void *abstract_surface)
{
cairo_image_surface_t *surface = abstract_surface;
cairo_surface_reference (&surface->base);
return surface;
}
static cairo_status_t
_cairo_image_surface_set_image (void *abstract_surface,
cairo_image_surface_t *image)
{
if (image == abstract_surface)
return CAIRO_STATUS_SUCCESS;
/* XXX: This case has not yet been implemented. We'll lie for now. */
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_abstract_surface_set_matrix (void *abstract_surface,
cairo_matrix_t *matrix)
{
cairo_image_surface_t *surface = abstract_surface;
return _cairo_image_surface_set_matrix (surface, matrix);
}
cairo_status_t
_cairo_image_surface_set_matrix (cairo_image_surface_t *surface,
cairo_matrix_t *matrix)
{
pixman_transform_t pixman_transform;
pixman_transform.matrix[0][0] = _cairo_fixed_from_double (matrix->m[0][0]);
pixman_transform.matrix[0][1] = _cairo_fixed_from_double (matrix->m[1][0]);
pixman_transform.matrix[0][2] = _cairo_fixed_from_double (matrix->m[2][0]);
pixman_transform.matrix[1][0] = _cairo_fixed_from_double (matrix->m[0][1]);
pixman_transform.matrix[1][1] = _cairo_fixed_from_double (matrix->m[1][1]);
pixman_transform.matrix[1][2] = _cairo_fixed_from_double (matrix->m[2][1]);
pixman_transform.matrix[2][0] = 0;
pixman_transform.matrix[2][1] = 0;
pixman_transform.matrix[2][2] = _cairo_fixed_from_double (1);
pixman_image_set_transform (surface->pixman_image, &pixman_transform);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_abstract_surface_set_filter (void *abstract_surface, cairo_filter_t filter)
{
cairo_image_surface_t *surface = abstract_surface;
return _cairo_image_surface_set_filter (surface, filter);
}
cairo_status_t
_cairo_image_surface_set_filter (cairo_image_surface_t *surface, cairo_filter_t filter)
{
pixman_filter_t pixman_filter;
switch (filter) {
case CAIRO_FILTER_FAST:
pixman_filter = PIXMAN_FILTER_FAST;
break;
case CAIRO_FILTER_GOOD:
pixman_filter = PIXMAN_FILTER_GOOD;
break;
case CAIRO_FILTER_BEST:
pixman_filter = PIXMAN_FILTER_BEST;
break;
case CAIRO_FILTER_NEAREST:
pixman_filter = PIXMAN_FILTER_NEAREST;
break;
case CAIRO_FILTER_BILINEAR:
pixman_filter = PIXMAN_FILTER_BILINEAR;
break;
default:
pixman_filter = PIXMAN_FILTER_BEST;
}
pixman_image_set_filter (surface->pixman_image, pixman_filter);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_abstract_surface_set_repeat (void *abstract_surface, int repeat)
{
cairo_image_surface_t *surface = abstract_surface;
return _cairo_image_surface_set_repeat (surface, repeat);
}
cairo_status_t
_cairo_image_surface_set_repeat (cairo_image_surface_t *surface, int repeat)
{
pixman_image_set_repeat (surface->pixman_image, repeat);
return CAIRO_STATUS_SUCCESS;
}
static pixman_operator_t
_pixman_operator (cairo_operator_t operator)
{
switch (operator) {
case CAIRO_OPERATOR_CLEAR:
return PIXMAN_OPERATOR_CLEAR;
case CAIRO_OPERATOR_SRC:
return PIXMAN_OPERATOR_SRC;
case CAIRO_OPERATOR_DST:
return PIXMAN_OPERATOR_DST;
case CAIRO_OPERATOR_OVER:
return PIXMAN_OPERATOR_OVER;
case CAIRO_OPERATOR_OVER_REVERSE:
return PIXMAN_OPERATOR_OVER_REVERSE;
case CAIRO_OPERATOR_IN:
return PIXMAN_OPERATOR_IN;
case CAIRO_OPERATOR_IN_REVERSE:
return PIXMAN_OPERATOR_IN_REVERSE;
case CAIRO_OPERATOR_OUT:
return PIXMAN_OPERATOR_OUT;
case CAIRO_OPERATOR_OUT_REVERSE:
return PIXMAN_OPERATOR_OUT_REVERSE;
case CAIRO_OPERATOR_ATOP:
return PIXMAN_OPERATOR_ATOP;
case CAIRO_OPERATOR_ATOP_REVERSE:
return PIXMAN_OPERATOR_ATOP_REVERSE;
case CAIRO_OPERATOR_XOR:
return PIXMAN_OPERATOR_XOR;
case CAIRO_OPERATOR_ADD:
return PIXMAN_OPERATOR_ADD;
case CAIRO_OPERATOR_SATURATE:
return PIXMAN_OPERATOR_SATURATE;
default:
return PIXMAN_OPERATOR_OVER;
}
}
static cairo_int_status_t
_cairo_image_surface_composite (cairo_operator_t operator,
cairo_surface_t *generic_src,
cairo_surface_t *generic_mask,
void *abstract_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_image_surface_t *dst = abstract_dst;
cairo_image_surface_t *src = (cairo_image_surface_t *) generic_src;
cairo_image_surface_t *mask = (cairo_image_surface_t *) generic_mask;
if (generic_src->backend != dst->base.backend ||
(generic_mask && (generic_mask->backend != dst->base.backend)))
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
pixman_composite (_pixman_operator (operator),
src->pixman_image,
mask ? mask->pixman_image : NULL,
dst->pixman_image,
src_x, src_y,
mask_x, mask_y,
dst_x, dst_y,
width, height);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_image_surface_fill_rectangles (void *abstract_surface,
cairo_operator_t operator,
const cairo_color_t *color,
cairo_rectangle_t *rects,
int num_rects)
{
cairo_image_surface_t *surface = abstract_surface;
pixman_color_t pixman_color;
pixman_color.red = color->red_short;
pixman_color.green = color->green_short;
pixman_color.blue = color->blue_short;
pixman_color.alpha = color->alpha_short;
/* XXX: The pixman_rectangle_t cast is evil... it needs to go away somehow. */
pixman_fill_rectangles (_pixman_operator(operator), surface->pixman_image,
&pixman_color, (pixman_rectangle_t *) rects, num_rects);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_image_surface_composite_trapezoids (cairo_operator_t operator,
cairo_surface_t *generic_src,
void *abstract_dst,
int x_src,
int y_src,
cairo_trapezoid_t *traps,
int num_traps)
{
cairo_image_surface_t *dst = abstract_dst;
cairo_image_surface_t *src = (cairo_image_surface_t *) generic_src;
if (generic_src->backend != dst->base.backend)
return CAIRO_INT_STATUS_UNSUPPORTED;
/* XXX: The pixman_trapezoid_t cast is evil and needs to go away somehow. */
pixman_composite_trapezoids (operator, src->pixman_image, dst->pixman_image,
x_src, y_src, (pixman_trapezoid_t *) traps, num_traps);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_image_surface_copy_page (void *abstract_surface)
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
static cairo_int_status_t
_cairo_image_surface_show_page (void *abstract_surface)
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
static cairo_int_status_t
_cairo_image_abstract_surface_set_clip_region (void *abstract_surface,
pixman_region16_t *region)
{
cairo_image_surface_t *surface = (cairo_image_surface_t *) abstract_surface;
return _cairo_image_surface_set_clip_region (surface, region);
}
cairo_int_status_t
_cairo_image_surface_set_clip_region (cairo_image_surface_t *surface,
pixman_region16_t *region)
{
pixman_image_set_clip_region (surface->pixman_image, region);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_image_abstract_surface_create_pattern (void *abstract_surface,
cairo_pattern_t *pattern,
cairo_box_t *box)
{
cairo_image_surface_t *image;
/* Fall back to general pattern creation for surface patterns. */
if (pattern->type == CAIRO_PATTERN_SURFACE)
return CAIRO_INT_STATUS_UNSUPPORTED;
image = _cairo_pattern_get_image (pattern, box);
if (image) {
pattern->source = &image->base;
return CAIRO_STATUS_SUCCESS;
} else
return CAIRO_STATUS_NO_MEMORY;
}
static const cairo_surface_backend_t cairo_image_surface_backend = {
_cairo_image_surface_create_similar,
_cairo_image_abstract_surface_destroy,
_cairo_image_surface_pixels_per_inch,
_cairo_image_surface_get_image,
_cairo_image_surface_set_image,
_cairo_image_abstract_surface_set_matrix,
_cairo_image_abstract_surface_set_filter,
_cairo_image_abstract_surface_set_repeat,
_cairo_image_surface_composite,
_cairo_image_surface_fill_rectangles,
_cairo_image_surface_composite_trapezoids,
_cairo_image_surface_copy_page,
_cairo_image_surface_show_page,
_cairo_image_abstract_surface_set_clip_region,
_cairo_image_abstract_surface_create_pattern
};
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