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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 */
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