import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/thebes/gfxGdkNativeRenderer.h

@@ -0,0 +1,88 @@
+/* -*- 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 GFXGDKNATIVERENDER_H_
+#define GFXGDKNATIVERENDER_H_
+
+#include <gdk/gdk.h>
+#include "nsSize.h"
+#ifdef MOZ_X11
+#include "gfxXlibNativeRenderer.h"
+#endif
+
+class gfxContext;
+
+/**
+ * This class lets us take code that draws into an GDK drawable and lets us
+ * use it to draw into any Thebes context. The user should subclass this class,
+ * override DrawWithGDK, and then call Draw(). The drawing will be subjected
+ * to all Thebes transformations, clipping etc.
+ */
+class gfxGdkNativeRenderer
+#ifdef MOZ_X11
+    : private gfxXlibNativeRenderer
+#endif
+{
+public:
+    /**
+     * Perform the native drawing.
+     * @param offsetX draw at this offset into the given drawable
+     * @param offsetY draw at this offset into the given drawable
+     * @param clipRects an array of rects; clip to the union
+     * @param numClipRects the number of rects in the array, or zero if
+     * no clipping is required
+     */
+
+#if (MOZ_WIDGET_GTK == 2)
+    virtual nsresult DrawWithGDK(GdkDrawable * drawable, gint offsetX, 
+            gint offsetY, GdkRectangle * clipRects, uint32_t numClipRects) = 0;
+#endif
+
+    enum {
+        // If set, then Draw() is opaque, i.e., every pixel in the intersection
+        // of the clipRect and (offset.x,offset.y,bounds.width,bounds.height)
+        // will be set and there is no dependence on what the existing pixels
+        // in the drawable are set to.
+        DRAW_IS_OPAQUE =
+#ifdef MOZ_X11
+            gfxXlibNativeRenderer::DRAW_IS_OPAQUE
+#else
+            0x1
+#endif
+        // If set, then numClipRects can be zero or one.
+        // If not set, then numClipRects will be zero.
+        , DRAW_SUPPORTS_CLIP_RECT =
+#ifdef MOZ_X11
+            gfxXlibNativeRenderer::DRAW_SUPPORTS_CLIP_RECT
+#else
+            0x2
+#endif
+    };
+
+    /**
+     * @param flags see above
+     * @param bounds Draw()'s drawing is guaranteed to be restricted to
+     * the rectangle (offset.x,offset.y,bounds.width,bounds.height)
+     * @param dpy a display to use for the drawing if ctx doesn't have one
+     */
+#if (MOZ_WIDGET_GTK == 2)
+    void Draw(gfxContext* ctx, mozilla::gfx::IntSize size,
+              uint32_t flags, GdkColormap* colormap);
+#endif
+
+private:
+#ifdef MOZ_X11
+    // for gfxXlibNativeRenderer:
+    virtual nsresult DrawWithXlib(cairo_surface_t* surface,
+                                  nsIntPoint offset,
+                                  mozilla::gfx::IntRect* clipRects, uint32_t numClipRects) override;
+
+#if (MOZ_WIDGET_GTK == 2)
+    GdkColormap *mColormap;
+#endif
+#endif
+};
+
+#endif /*GFXGDKNATIVERENDER_H_*/