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/* gtkquartz.c: Utility functions used by the Quartz port
*
* Copyright (C) 2006 Imendio AB
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkquartz.h"
#include <gdk/macos/gdkmacos.h>
static gboolean
_cairo_surface_extents (cairo_surface_t *surface,
GdkRectangle *extents)
{
double x1, x2, y1, y2;
cairo_t *cr;
g_return_val_if_fail (surface != NULL, FALSE);
g_return_val_if_fail (extents != NULL, FALSE);
cr = cairo_create (surface);
cairo_clip_extents (cr, &x1, &y1, &x2, &y2);
x1 = floor (x1);
y1 = floor (y1);
x2 = ceil (x2);
y2 = ceil (y2);
x2 -= x1;
y2 -= y1;
if (x1 < G_MININT || x1 > G_MAXINT ||
y1 < G_MININT || y1 > G_MAXINT ||
x2 > G_MAXINT || y2 > G_MAXINT)
{
extents->x = extents->y = extents->width = extents->height = 0;
return FALSE;
}
extents->x = x1;
extents->y = y1;
extents->width = x2;
extents->height = y2;
return TRUE;
}
static void
_data_provider_release_cairo_surface (void *info,
const void *data,
size_t size)
{
cairo_surface_destroy ((cairo_surface_t *)info);
}
/* Returns a new NSImage or %NULL in case of an error.
* The device scale factor will be transferred to the NSImage (hidpi)
*/
NSImage *
_gtk_quartz_create_image_from_surface (cairo_surface_t *surface)
{
CGColorSpaceRef colorspace;
CGDataProviderRef data_provider;
CGImageRef image;
void *data;
NSImage *nsimage;
double sx, sy;
cairo_t *cr;
cairo_surface_t *img_surface;
cairo_rectangle_int_t extents;
int width, height, rowstride;
if (!_cairo_surface_extents (surface, &extents))
return NULL;
cairo_surface_get_device_scale (surface, &sx, &sy);
width = extents.width * sx;
height = extents.height * sy;
img_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
cr = cairo_create (img_surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_scale (cr, sx, sy);
cairo_set_source_surface (cr, surface, -extents.x, -extents.y);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_flush (img_surface);
rowstride = cairo_image_surface_get_stride (img_surface);
data = cairo_image_surface_get_data (img_surface);
colorspace = CGColorSpaceCreateDeviceRGB ();
/* Note: the release callback will only be called after NSImage below dies */
data_provider = CGDataProviderCreateWithData (surface, data, height * rowstride,
_data_provider_release_cairo_surface);
image = CGImageCreate (width, height, 8,
32, rowstride,
colorspace,
/* XXX: kCGBitmapByteOrderDefault gives wrong colors..?? */
kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst,
data_provider, NULL, FALSE,
kCGRenderingIntentDefault);
CGDataProviderRelease (data_provider);
CGColorSpaceRelease (colorspace);
nsimage = [[NSImage alloc] initWithCGImage:image size:NSMakeSize (extents.width, extents.height)];
CGImageRelease (image);
return nsimage;
}
#ifdef QUARTZ_RELOCATION
/* Bundle-based functions for various directories. These almost work
* even when the application isn’t in a bundle, because mainBundle
* paths point to the bin directory in that case. It’s a simple matter
* to test for that and remove the last element.
*/
static const char *
get_bundle_path (void)
{
static char *path = NULL;
if (path == NULL)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
char *resource_path = g_strdup ([[[NSBundle mainBundle] resourcePath] UTF8String]);
char *base;
[pool drain];
base = g_path_get_basename (resource_path);
if (strcmp (base, "bin") == 0)
path = g_path_get_dirname (resource_path);
else
path = strdup (resource_path);
g_free (resource_path);
g_free (base);
}
return path;
}
const char *
_gtk_get_datadir (void)
{
static char *path = NULL;
if (path == NULL)
path = g_build_filename (get_bundle_path (), "share", NULL);
return path;
}
const char *
_gtk_get_libdir (void)
{
static char *path = NULL;
if (path == NULL)
path = g_build_filename (get_bundle_path (), "lib", NULL);
return path;
}
const char *
_gtk_get_localedir (void)
{
static char *path = NULL;
if (path == NULL)
path = g_build_filename (get_bundle_path (), "share", "locale", NULL);
return path;
}
const char *
_gtk_get_sysconfdir (void)
{
static char *path = NULL;
if (path == NULL)
path = g_build_filename (get_bundle_path (), "etc", NULL);
return path;
}
const char *
_gtk_get_data_prefix (void)
{
return get_bundle_path ();
}
#endif /* QUARTZ_RELOCATION */
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