1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/chromium/src/chrome/common/x11_util.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,92 @@
1.4 +// Copyright (c) 2009 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#ifndef CHROME_COMMON_X11_UTIL_H_
1.9 +#define CHROME_COMMON_X11_UTIL_H_
1.10 +
1.11 +// This file declares utility functions for X11 (Linux only).
1.12 +//
1.13 +// These functions do not require the Xlib headers to be included (which is why
1.14 +// we use a void* for Visual*). The Xlib headers are highly polluting so we try
1.15 +// hard to limit their spread into the rest of the code.
1.16 +
1.17 +#if (MOZ_WIDGET_GTK == 2)
1.18 +typedef struct _GdkDrawable GdkWindow;
1.19 +#else
1.20 +typedef struct _GdkWindow GdkWindow;
1.21 +#endif
1.22 +typedef struct _GtkWidget GtkWidget;
1.23 +typedef unsigned long XID;
1.24 +typedef struct _XDisplay Display;
1.25 +
1.26 +namespace base {
1.27 +class Thread;
1.28 +}
1.29 +namespace x11_util {
1.30 +
1.31 +// These functions use the GDK default display and this /must/ be called from
1.32 +// the UI thread. Thus, they don't support multiple displays.
1.33 +
1.34 +// These functions cache their results.
1.35 +
1.36 +// Return an X11 connection for the current, primary display.
1.37 +Display* GetXDisplay();
1.38 +// Return true iff the connection supports X shared memory
1.39 +bool QuerySharedMemorySupport(Display* dpy);
1.40 +// Return true iff the display supports Xrender
1.41 +bool QueryRenderSupport(Display* dpy);
1.42 +// Return the default screen number for the display
1.43 +int GetDefaultScreen(Display* display);
1.44 +
1.45 +// These functions do not cache their results
1.46 +
1.47 +// Get the X window id for the default root window
1.48 +XID GetX11RootWindow();
1.49 +// Get the X window id for the given GTK widget.
1.50 +XID GetX11WindowFromGtkWidget(GtkWidget*);
1.51 +XID GetX11WindowFromGdkWindow(GdkWindow*);
1.52 +// Get a Visual from the given widget. Since we don't include the Xlib
1.53 +// headers, this is returned as a void*.
1.54 +void* GetVisualFromGtkWidget(GtkWidget*);
1.55 +// Return the number of bits-per-pixel for a pixmap of the given depth
1.56 +int BitsPerPixelForPixmapDepth(Display*, int depth);
1.57 +
1.58 +// Return a handle to a server side pixmap. |shared_memory_key| is a SysV
1.59 +// IPC key. The shared memory region must contain 32-bit pixels.
1.60 +XID AttachSharedMemory(Display* display, int shared_memory_support);
1.61 +void DetachSharedMemory(Display* display, XID shmseg);
1.62 +
1.63 +// Return a handle to an XRender picture where |pixmap| is a handle to a
1.64 +// pixmap containing Skia ARGB data.
1.65 +XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap);
1.66 +
1.67 +void FreePicture(Display* display, XID picture);
1.68 +void FreePixmap(Display* display, XID pixmap);
1.69 +
1.70 +// These functions are for performing X opertions outside of the UI thread.
1.71 +
1.72 +// Return the Display for the secondary X connection. We keep a second
1.73 +// connection around for making X requests outside of the UI thread.
1.74 +// This function may only be called from the BACKGROUND_X11 thread.
1.75 +Display* GetSecondaryDisplay();
1.76 +
1.77 +// Since one cannot include both WebKit header and Xlib headers in the same
1.78 +// file (due to collisions), we wrap all the Xlib functions that we need here.
1.79 +// These functions must be called on the BACKGROUND_X11 thread since they
1.80 +// reference GetSecondaryDisplay().
1.81 +
1.82 +// Get the position of the given window in screen coordinates as well as its
1.83 +// current size.
1.84 +bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height,
1.85 + XID window);
1.86 +
1.87 +// Find the immediate parent of an X window.
1.88 +//
1.89 +// parent_window: (output) the parent window of |window|, or 0.
1.90 +// parent_is_root: (output) true iff the parent of |window| is the root window.
1.91 +bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window);
1.92 +
1.93 +} // namespace x11_util
1.94 +
1.95 +#endif // CHROME_COMMON_X11_UTIL_H_
