/* 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 */