cairo-quartz-image-surface.c [plain text]
#include "cairoint.h"
#include "cairo-quartz-image.h"
#include "cairo-quartz-private.h"
#define SURFACE_ERROR_NO_MEMORY (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_NO_MEMORY)))
#define SURFACE_ERROR_TYPE_MISMATCH (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_SURFACE_TYPE_MISMATCH)))
#define SURFACE_ERROR_INVALID_FORMAT (_cairo_surface_create_in_error(_cairo_error(CAIRO_STATUS_INVALID_FORMAT)))
static void
DataProviderReleaseCallback (void *info, const void *data, size_t size)
{
cairo_surface_t *surface = (cairo_surface_t *) info;
cairo_surface_destroy (surface);
}
static cairo_surface_t *
_cairo_quartz_image_surface_create_similar (void *asurface,
cairo_content_t content,
int width,
int height)
{
cairo_surface_t *result;
cairo_surface_t *isurf = cairo_image_surface_create (_cairo_format_from_content (content),
width,
height);
if (cairo_surface_status(isurf))
return isurf;
result = cairo_quartz_image_surface_create (isurf);
cairo_surface_destroy (isurf);
return result;
}
static cairo_status_t
_cairo_quartz_image_surface_finish (void *asurface)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
CGImageRelease (surface->image);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_quartz_image_surface_acquire_source_image (void *asurface,
cairo_image_surface_t **image_out,
void **image_extra)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
*image_out = surface->imageSurface;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_quartz_image_surface_acquire_dest_image (void *asurface,
cairo_rectangle_int_t *interest_rect,
cairo_image_surface_t **image_out,
cairo_rectangle_int_t *image_rect,
void **image_extra)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
*image_out = surface->imageSurface;
*image_rect = surface->extents;
*image_extra = NULL;
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_quartz_image_surface_get_extents (void *asurface,
cairo_rectangle_int_t *extents)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
*extents = surface->extents;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_quartz_image_surface_flush (void *asurface)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t *) asurface;
CGImageRef oldImage = surface->image;
CGImageRef newImage = NULL;
cairo_surface_reference ((cairo_surface_t*) surface->imageSurface);
newImage = _cairo_quartz_create_cgimage (surface->imageSurface->format,
surface->imageSurface->width,
surface->imageSurface->height,
surface->imageSurface->stride,
surface->imageSurface->data,
TRUE,
NULL,
DataProviderReleaseCallback,
surface->imageSurface);
surface->image = newImage;
CGImageRelease (oldImage);
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t cairo_quartz_image_surface_backend = {
CAIRO_SURFACE_TYPE_QUARTZ_IMAGE,
_cairo_quartz_image_surface_create_similar,
_cairo_quartz_image_surface_finish,
_cairo_quartz_image_surface_acquire_source_image,
NULL,
_cairo_quartz_image_surface_acquire_dest_image,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
_cairo_quartz_image_surface_get_extents,
NULL,
NULL,
_cairo_quartz_image_surface_flush,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL
};
cairo_surface_t *
cairo_quartz_image_surface_create (cairo_surface_t *surface)
{
cairo_quartz_image_surface_t *qisurf;
CGImageRef image;
cairo_image_surface_t *image_surface;
int width, height, stride;
cairo_format_t format;
unsigned char *data;
if (cairo_surface_get_type(surface) != CAIRO_SURFACE_TYPE_IMAGE)
return SURFACE_ERROR_TYPE_MISMATCH;
image_surface = (cairo_image_surface_t*) surface;
width = image_surface->width;
height = image_surface->height;
stride = image_surface->stride;
format = image_surface->format;
data = image_surface->data;
if (!_cairo_quartz_verify_surface_size(width, height))
return SURFACE_ERROR_NO_MEMORY;
if (width == 0 || height == 0)
return SURFACE_ERROR_NO_MEMORY;
if (format != CAIRO_FORMAT_ARGB32 && format != CAIRO_FORMAT_RGB24)
return SURFACE_ERROR_INVALID_FORMAT;
qisurf = malloc(sizeof(cairo_quartz_image_surface_t));
if (qisurf == NULL)
return SURFACE_ERROR_NO_MEMORY;
memset (qisurf, 0, sizeof(cairo_quartz_image_surface_t));
cairo_surface_reference (surface);
image = _cairo_quartz_create_cgimage (format,
width, height,
stride,
data,
TRUE,
NULL,
DataProviderReleaseCallback,
image_surface);
if (!image) {
free (qisurf);
return SURFACE_ERROR_NO_MEMORY;
}
_cairo_surface_init (&qisurf->base,
&cairo_quartz_image_surface_backend,
_cairo_content_from_format (format));
qisurf->extents.x = qisurf->extents.y = 0;
qisurf->extents.width = width;
qisurf->extents.height = height;
qisurf->image = image;
qisurf->imageSurface = image_surface;
return &qisurf->base;
}
cairo_surface_t *
cairo_quartz_image_surface_get_image (cairo_surface_t *asurface)
{
cairo_quartz_image_surface_t *surface = (cairo_quartz_image_surface_t*) asurface;
if (cairo_surface_get_type(asurface) != CAIRO_SURFACE_TYPE_QUARTZ_IMAGE)
return NULL;
return (cairo_surface_t*) surface->imageSurface;
}