Bug 1278441 - Add a CoreGraphics subclass of PrintTarget. r=mstange

--HG--
extra : rebase_source : 3629f0a9152dad18b9a2e44d16b4d28359f414cf

gfx/thebes/PrintTargetCG.cpp

@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PrintTargetCG.h"
+
+#include "cairo.h"
+#include "cairo-quartz.h"
+#include "mozilla/gfx/HelpersCairo.h"
+
+namespace mozilla {
+namespace gfx {
+
+PrintTargetCG::PrintTargetCG(cairo_surface_t* aCairoSurface,
+                             const IntSize& aSize)
+  : PrintTarget(aCairoSurface, aSize)
+{
+  // TODO: Add memory reporting like gfxQuartzSurface.
+  //RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));
+}
+
+/* static */ already_AddRefed<PrintTargetCG>
+PrintTargetCG::CreateOrNull(const IntSize& aSize, gfxImageFormat aFormat)
+{
+  if (!Factory::CheckSurfaceSize(aSize)) {
+    return nullptr;
+  }
+
+  unsigned int width = static_cast<unsigned int>(aSize.width);
+  unsigned int height = static_cast<unsigned int>(aSize.height);
+
+  cairo_format_t cformat = GfxFormatToCairoFormat(aFormat);
+  cairo_surface_t* surface =
+    cairo_quartz_surface_create(cformat, width, height);
+
+  if (cairo_surface_status(surface)) {
+    return nullptr;
+  }
+
+  // The new object takes ownership of our surface reference.
+  RefPtr<PrintTargetCG> target = new PrintTargetCG(surface, aSize);
+
+  return target.forget();
+}
+
+/* static */ already_AddRefed<PrintTargetCG>
+PrintTargetCG::CreateOrNull(CGContextRef aContext, const IntSize& aSize)
+{
+  if (!Factory::CheckSurfaceSize(aSize)) {
+    return nullptr;
+  }
+
+  unsigned int width = static_cast<unsigned int>(aSize.width);
+  unsigned int height = static_cast<unsigned int>(aSize.height);
+
+  cairo_surface_t* surface =
+    cairo_quartz_surface_create_for_cg_context(aContext, width, height);
+
+  if (cairo_surface_status(surface)) {
+    return nullptr;
+  }
+
+  // The new object takes ownership of our surface reference.
+  RefPtr<PrintTargetCG> target = new PrintTargetCG(surface, aSize);
+
+  return target.forget();
+}
+
+} // namespace gfx
+} // namespace mozilla

gfx/thebes/PrintTargetCG.h

@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_PRINTTARGETCG_H
+#define MOZILLA_GFX_PRINTTARGETCG_H
+
+#include <Carbon/Carbon.h>
+#include "PrintTarget.h"
+
+namespace mozilla {
+namespace gfx {
+
+/**
+ * CoreGraphics printing target.
+ *
+ * Note that a CGContextRef obtained from PMSessionGetCGGraphicsContext is
+ * valid only for the current page.  As a consequence instances of this class
+ * should only be used to print a single page.
+ */
+class PrintTargetCG final : public PrintTarget
+{
+public:
+  static already_AddRefed<PrintTargetCG>
+  CreateOrNull(const IntSize& aSize, gfxImageFormat aFormat);
+
+  static already_AddRefed<PrintTargetCG>
+  CreateOrNull(CGContextRef aContext, const IntSize& aSize);
+
+private:
+  PrintTargetCG(cairo_surface_t* aCairoSurface,
+                const IntSize& aSize);
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif /* MOZILLA_GFX_PRINTTARGETCG_H */

gfx/thebes/moz.build

@@ -97,12 +97,16 @@ elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
         'gfxQuartzNativeDrawing.h',
         'gfxQuartzSurface.h',
     ]
+    EXPORTS.mozilla.gfx += [
+        'PrintTargetCG.h',
+    ]
     SOURCES += [
         'gfxCoreTextShaper.cpp',
         'gfxMacFont.cpp',
         'gfxPlatformMac.cpp',
         'gfxQuartzNativeDrawing.cpp',
         'gfxQuartzSurface.cpp',
+        'PrintTargetCG.cpp',
     ]
 elif 'gtk' in CONFIG['MOZ_WIDGET_TOOLKIT']:
     EXPORTS += [

widget/cocoa/nsDeviceContextSpecX.mm

@@ -5,7 +5,7 @@
 
 #include "nsDeviceContextSpecX.h"
 
-#include "mozilla/gfx/PrintTargetThebes.h"
+#include "mozilla/gfx/PrintTargetCG.h"
 #include "mozilla/RefPtr.h"
 #include "nsCRT.h"
 #include <unistd.h>
@@ -15,8 +15,6 @@
 #include "nsIPrintOptions.h"
 #include "nsPrintSettingsX.h"
 
-#include "gfxQuartzSurface.h"
-
 // This must be the last include:
 #include "nsObjCExceptions.h"
 
@@ -153,23 +151,16 @@ already_AddRefed<PrintTarget> nsDeviceContextSpecX::MakePrintTarget()
     CGContextRef context;
     ::PMSessionGetCGGraphicsContext(mPrintSession, &context);
 
-    RefPtr<gfxASurface> newSurface;
-
     if (context) {
         // Initially, origin is at bottom-left corner of the paper.
         // Here, we translate it to top-left corner of the paper.
         CGContextTranslateCTM(context, 0, height);
         CGContextScaleCTM(context, 1.0, -1.0);
-        newSurface = new gfxQuartzSurface(context, size);
-    } else {
-        newSurface = new gfxQuartzSurface(size, SurfaceFormat::A8R8G8B8_UINT32);
+        return PrintTargetCG::CreateOrNull(context, size);
     }
 
-    if (!newSurface) {
-        return nullptr;
-    }
-
-    return PrintTargetThebes::CreateOrNull(newSurface);
+    // Apparently we do need this branch - bug 368933.
+    return PrintTargetCG::CreateOrNull(size, SurfaceFormat::A8R8G8B8_UINT32);
 
     NS_OBJC_END_TRY_ABORT_BLOCK_NSNULL;
 }