1 files changed, 117 insertions, 0 deletions
diff --git a/gfx/thebes/gfxXlibSurface.h b/gfx/thebes/gfxXlibSurface.h
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+++ b/gfx/thebes/gfxXlibSurface.h
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+/* -*- 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 GFX_XLIBSURFACE_H
+#define GFX_XLIBSURFACE_H
+
+#include "gfxASurface.h"
+
+#include <X11/extensions/Xrender.h>
+#include <X11/Xlib.h>
+#include "X11UndefineNone.h"
+
+#include "GLXLibrary.h"
+
+#include "nsSize.h"
+
+// Although the dimension parameters in the xCreatePixmapReq wire protocol are
+// 16-bit unsigned integers, the server's CreatePixmap returns BadAlloc if
+// either dimension cannot be represented by a 16-bit *signed* integer.
+#define XLIB_IMAGE_SIDE_SIZE_LIMIT 0x7fff
+
+class gfxXlibSurface final : public gfxASurface {
+ public:
+  // construct a wrapper around the specified drawable with dpy/visual.
+  // Will use XGetGeometry to query the window/pixmap size.
+  gfxXlibSurface(Display* dpy, Drawable drawable, Visual* visual);
+
+  // construct a wrapper around the specified drawable with dpy/visual,
+  // and known width/height.
+  gfxXlibSurface(Display* dpy, Drawable drawable, Visual* visual,
+                 const mozilla::gfx::IntSize& size);
+
+  // construct a wrapper around the specified drawable with dpy/format,
+  // and known width/height.
+  gfxXlibSurface(::Screen* screen, Drawable drawable, XRenderPictFormat* format,
+                 const mozilla::gfx::IntSize& size);
+
+  explicit gfxXlibSurface(cairo_surface_t* csurf);
+
+  // create a new Pixmap and wrapper surface.
+  // |relatedDrawable| provides a hint to the server for determining whether
+  // the pixmap should be in video or system memory.  It must be on
+  // |screen| (if specified).
+  static already_AddRefed<gfxXlibSurface> Create(
+      ::Screen* screen, Visual* visual, const mozilla::gfx::IntSize& size,
+      Drawable relatedDrawable = X11None);
+  static cairo_surface_t* CreateCairoSurface(
+      ::Screen* screen, Visual* visual, const mozilla::gfx::IntSize& size,
+      Drawable relatedDrawable = X11None);
+  static already_AddRefed<gfxXlibSurface> Create(
+      ::Screen* screen, XRenderPictFormat* format,
+      const mozilla::gfx::IntSize& size, Drawable relatedDrawable = X11None);
+
+  virtual ~gfxXlibSurface();
+
+  already_AddRefed<gfxASurface> CreateSimilarSurface(
+      gfxContentType aType, const mozilla::gfx::IntSize& aSize) override;
+  void Finish() override;
+
+  const mozilla::gfx::IntSize GetSize() const override;
+
+  Display* XDisplay() { return mDisplay; }
+  ::Screen* XScreen();
+  Drawable XDrawable() { return mDrawable; }
+  XRenderPictFormat* XRenderFormat();
+
+  static int DepthOfVisual(const ::Screen* screen, const Visual* visual);
+  static Visual* FindVisual(::Screen* screen, gfxImageFormat format);
+  static XRenderPictFormat* FindRenderFormat(Display* dpy,
+                                             gfxImageFormat format);
+  static bool GetColormapAndVisual(cairo_surface_t* aXlibSurface,
+                                   Colormap* colormap, Visual** visual);
+
+  // take ownership of a passed-in Pixmap, calling XFreePixmap on it
+  // when the gfxXlibSurface is destroyed.
+  void TakePixmap();
+
+  // Release ownership of this surface's Pixmap.  This is only valid
+  // on gfxXlibSurfaces for which the user called TakePixmap(), or
+  // on those created by a Create() factory method.
+  Drawable ReleasePixmap();
+
+  // Find a visual and colormap pair suitable for rendering to this surface.
+  bool GetColormapAndVisual(Colormap* colormap, Visual** visual);
+
+  GLXPixmap GetGLXPixmap();
+  // Binds a GLXPixmap backed by this context's surface.
+  // Primarily for use in sharing surfaces.
+  void BindGLXPixmap(GLXPixmap aPixmap);
+
+  // Return true if cairo will take its slow path when this surface is used
+  // in a pattern with EXTEND_PAD.  As a workaround for XRender's RepeatPad
+  // not being implemented correctly on old X servers, cairo avoids XRender
+  // and instead reads back to perform EXTEND_PAD with pixman.  Cairo does
+  // this for servers older than xorg-server 1.7.
+  bool IsPadSlow() {
+    // The test here matches that for buggy_pad_reflect in
+    // _cairo_xlib_device_create.
+    return VendorRelease(mDisplay) >= 60700000 ||
+           VendorRelease(mDisplay) < 10699000;
+  }
+
+ protected:
+  // if TakePixmap() has been called on this
+  bool mPixmapTaken;
+
+  Display* mDisplay;
+  Drawable mDrawable;
+
+  const mozilla::gfx::IntSize DoSizeQuery();
+
+  GLXPixmap mGLXPixmap;
+};
+
+#endif /* GFX_XLIBSURFACE_H */