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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/Xlib.h>
+#include "X11UndefineNone.h"
+
+#include "GLXLibrary.h"
+#include "mozilla/gfx/XlibDisplay.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);
+ gfxXlibSurface(const std::shared_ptr<mozilla::gfx::XlibDisplay>& dpy,
+ Drawable drawable, Visual* visual,
+ 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 already_AddRefed<gfxXlibSurface> Create(
+ const std::shared_ptr<mozilla::gfx::XlibDisplay>& display,
+ ::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);
+
+ virtual ~gfxXlibSurface();
+
+ void Finish() override;
+
+ const mozilla::gfx::IntSize GetSize() const override;
+
+ Display* XDisplay() { return *mDisplay; }
+ ::Screen* XScreen();
+ Drawable XDrawable() { return mDrawable; }
+
+ static int DepthOfVisual(const ::Screen* screen, const Visual* visual);
+ static Visual* FindVisual(::Screen* screen, 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);
+
+ // 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->get()) >= 60700000 ||
+ VendorRelease(mDisplay->get()) < 10699000;
+ }
+
+ protected:
+ // if TakePixmap() has been called on this
+ bool mPixmapTaken;
+
+ std::shared_ptr<mozilla::gfx::XlibDisplay> mDisplay;
+ Drawable mDrawable;
+
+ const mozilla::gfx::IntSize DoSizeQuery();
+};
+
+#endif /* GFX_XLIBSURFACE_H */