| OLD | NEW |
| (Empty) |
| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/gtk/cairo_cached_surface.h" | |
| 6 | |
| 7 #include <gtk/gtk.h> | |
| 8 | |
| 9 #include "base/basictypes.h" | |
| 10 #include "base/logging.h" | |
| 11 | |
| 12 CairoCachedSurface::CairoCachedSurface() : pixbuf_(NULL), surface_(NULL) { | |
| 13 } | |
| 14 | |
| 15 CairoCachedSurface::~CairoCachedSurface() { | |
| 16 if (surface_) | |
| 17 cairo_surface_destroy(surface_); | |
| 18 | |
| 19 if (pixbuf_) | |
| 20 g_object_unref(pixbuf_); | |
| 21 } | |
| 22 | |
| 23 int CairoCachedSurface::Width() const { | |
| 24 return pixbuf_ ? gdk_pixbuf_get_width(pixbuf_) : -1; | |
| 25 } | |
| 26 | |
| 27 int CairoCachedSurface::Height() const { | |
| 28 return pixbuf_ ? gdk_pixbuf_get_height(pixbuf_) : -1; | |
| 29 } | |
| 30 | |
| 31 void CairoCachedSurface::UsePixbuf(GdkPixbuf* pixbuf) { | |
| 32 if (surface_) { | |
| 33 cairo_surface_destroy(surface_); | |
| 34 surface_ = NULL; | |
| 35 } | |
| 36 | |
| 37 if (pixbuf) | |
| 38 g_object_ref(pixbuf); | |
| 39 | |
| 40 if (pixbuf_) | |
| 41 g_object_unref(pixbuf_); | |
| 42 | |
| 43 pixbuf_ = pixbuf; | |
| 44 } | |
| 45 | |
| 46 void CairoCachedSurface::SetSource(cairo_t* cr, int x, int y) { | |
| 47 DCHECK(pixbuf_); | |
| 48 DCHECK(cr); | |
| 49 | |
| 50 if (!surface_) { | |
| 51 // First time here since last UsePixbuf call. Generate the surface. | |
| 52 cairo_surface_t* target = cairo_get_target(cr); | |
| 53 surface_ = cairo_surface_create_similar( | |
| 54 target, | |
| 55 CAIRO_CONTENT_COLOR_ALPHA, | |
| 56 gdk_pixbuf_get_width(pixbuf_), | |
| 57 gdk_pixbuf_get_height(pixbuf_)); | |
| 58 | |
| 59 DCHECK(surface_); | |
| 60 #if !defined(NDEBUG) | |
| 61 int surface_type = cairo_surface_get_type(surface_); | |
| 62 DCHECK(surface_type == CAIRO_SURFACE_TYPE_XLIB || | |
| 63 surface_type == CAIRO_SURFACE_TYPE_XCB || | |
| 64 surface_type == CAIRO_SURFACE_TYPE_IMAGE); | |
| 65 #endif | |
| 66 | |
| 67 cairo_t* copy_cr = cairo_create(surface_); | |
| 68 gdk_cairo_set_source_pixbuf(copy_cr, pixbuf_, 0, 0); | |
| 69 cairo_paint(copy_cr); | |
| 70 cairo_destroy(copy_cr); | |
| 71 } | |
| 72 | |
| 73 cairo_set_source_surface(cr, surface_, x, y); | |
| 74 } | |
| OLD | NEW |