Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/gfx/thebes/gfxQuartzNativeDrawing.h b/gfx/thebes/gfxQuartzNativeDrawing.h
new file mode 100644
index 0000000000..9e8b0bede6
--- /dev/null
+++ b/gfx/thebes/gfxQuartzNativeDrawing.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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 _GFXQUARTZNATIVEDRAWING_H_
+#define _GFXQUARTZNATIVEDRAWING_H_
+
+#include "mozilla/Attributes.h"
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/BorrowedContext.h"
+#include "mozilla/RefPtr.h"
+
+class gfxQuartzNativeDrawing {
+  typedef mozilla::gfx::DrawTarget DrawTarget;
+  typedef mozilla::gfx::Rect Rect;
+
+ public:
+  /* Create native Quartz drawing for a rectangle bounded by
+   * nativeRect.
+   *
+   * Typical usage looks like:
+   *
+   *   gfxQuartzNativeDrawing nativeDraw(ctx, nativeRect);
+   *   CGContextRef cgContext = nativeDraw.BeginNativeDrawing();
+   *   if (!cgContext)
+   *     return NS_ERROR_FAILURE;
+   *
+   *     ... call Quartz operations on CGContextRef to draw to nativeRect ...
+   *
+   *   nativeDraw.EndNativeDrawing();
+   *
+   * aNativeRect is the size of the surface (in Quartz/Cocoa points) that
+   * will be created _if_ the gfxQuartzNativeDrawing decides to create a new
+   * surface and CGContext for its drawing operations, which it then
+   * composites into the target DrawTarget.
+   *
+   * (Note that aNativeRect will be ignored if the gfxQuartzNativeDrawing
+   * uses the target DrawTarget directly.)
+   *
+   * The optional aBackingScale parameter is a scaling factor that will be
+   * applied when creating and rendering into such a temporary surface.
+   */
+  gfxQuartzNativeDrawing(DrawTarget& aDrawTarget, const Rect& aNativeRect);
+
+  /* Returns a CGContextRef which may be used for native drawing.  This
+   * CGContextRef is valid until EndNativeDrawing is called; if it is used
+   * for drawing after that time, the result is undefined. */
+  CGContextRef BeginNativeDrawing();
+
+  /* Marks the end of native drawing */
+  void EndNativeDrawing();
+
+ private:
+  // don't allow copying via construction or assignment
+  gfxQuartzNativeDrawing(const gfxQuartzNativeDrawing&) = delete;
+  const gfxQuartzNativeDrawing& operator=(const gfxQuartzNativeDrawing&) =
+      delete;
+
+  // Final destination context
+  RefPtr<DrawTarget> mDrawTarget;
+  RefPtr<DrawTarget> mTempDrawTarget;
+  mozilla::gfx::BorrowedCGContext mBorrowedContext;
+  mozilla::gfx::Rect mNativeRect;
+
+  // saved state
+  CGContextRef mCGContext;
+};
+
+#endif