The Tor Browser / file comparison
comparison: ipc/chromium/src/chrome/common/x11_util.h
ipc/chromium/src/chrome/common/x11_util.h
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
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| -1:000000000000 | 0:f03b4039539e |
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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_COMMON_X11_UTIL_H_ | |
| 6 #define CHROME_COMMON_X11_UTIL_H_ | |
| 7 | |
| 8 // This file declares utility functions for X11 (Linux only). | |
| 9 // | |
| 10 // These functions do not require the Xlib headers to be included (which is why | |
| 11 // we use a void* for Visual*). The Xlib headers are highly polluting so we try | |
| 12 // hard to limit their spread into the rest of the code. | |
| 13 | |
| 14 #if (MOZ_WIDGET_GTK == 2) | |
| 15 typedef struct _GdkDrawable GdkWindow; | |
| 16 #else | |
| 17 typedef struct _GdkWindow GdkWindow; | |
| 18 #endif | |
| 19 typedef struct _GtkWidget GtkWidget; | |
| 20 typedef unsigned long XID; | |
| 21 typedef struct _XDisplay Display; | |
| 22 | |
| 23 namespace base { | |
| 24 class Thread; | |
| 25 } | |
| 26 namespace x11_util { | |
| 27 | |
| 28 // These functions use the GDK default display and this /must/ be called from | |
| 29 // the UI thread. Thus, they don't support multiple displays. | |
| 30 | |
| 31 // These functions cache their results. | |
| 32 | |
| 33 // Return an X11 connection for the current, primary display. | |
| 34 Display* GetXDisplay(); | |
| 35 // Return true iff the connection supports X shared memory | |
| 36 bool QuerySharedMemorySupport(Display* dpy); | |
| 37 // Return true iff the display supports Xrender | |
| 38 bool QueryRenderSupport(Display* dpy); | |
| 39 // Return the default screen number for the display | |
| 40 int GetDefaultScreen(Display* display); | |
| 41 | |
| 42 // These functions do not cache their results | |
| 43 | |
| 44 // Get the X window id for the default root window | |
| 45 XID GetX11RootWindow(); | |
| 46 // Get the X window id for the given GTK widget. | |
| 47 XID GetX11WindowFromGtkWidget(GtkWidget*); | |
| 48 XID GetX11WindowFromGdkWindow(GdkWindow*); | |
| 49 // Get a Visual from the given widget. Since we don't include the Xlib | |
| 50 // headers, this is returned as a void*. | |
| 51 void* GetVisualFromGtkWidget(GtkWidget*); | |
| 52 // Return the number of bits-per-pixel for a pixmap of the given depth | |
| 53 int BitsPerPixelForPixmapDepth(Display*, int depth); | |
| 54 | |
| 55 // Return a handle to a server side pixmap. |shared_memory_key| is a SysV | |
| 56 // IPC key. The shared memory region must contain 32-bit pixels. | |
| 57 XID AttachSharedMemory(Display* display, int shared_memory_support); | |
| 58 void DetachSharedMemory(Display* display, XID shmseg); | |
| 59 | |
| 60 // Return a handle to an XRender picture where |pixmap| is a handle to a | |
| 61 // pixmap containing Skia ARGB data. | |
| 62 XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap); | |
| 63 | |
| 64 void FreePicture(Display* display, XID picture); | |
| 65 void FreePixmap(Display* display, XID pixmap); | |
| 66 | |
| 67 // These functions are for performing X opertions outside of the UI thread. | |
| 68 | |
| 69 // Return the Display for the secondary X connection. We keep a second | |
| 70 // connection around for making X requests outside of the UI thread. | |
| 71 // This function may only be called from the BACKGROUND_X11 thread. | |
| 72 Display* GetSecondaryDisplay(); | |
| 73 | |
| 74 // Since one cannot include both WebKit header and Xlib headers in the same | |
| 75 // file (due to collisions), we wrap all the Xlib functions that we need here. | |
| 76 // These functions must be called on the BACKGROUND_X11 thread since they | |
| 77 // reference GetSecondaryDisplay(). | |
| 78 | |
| 79 // Get the position of the given window in screen coordinates as well as its | |
| 80 // current size. | |
| 81 bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height, | |
| 82 XID window); | |
| 83 | |
| 84 // Find the immediate parent of an X window. | |
| 85 // | |
| 86 // parent_window: (output) the parent window of |window|, or 0. | |
| 87 // parent_is_root: (output) true iff the parent of |window| is the root window. | |
| 88 bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window); | |
| 89 | |
| 90 } // namespace x11_util | |
| 91 | |
| 92 #endif // CHROME_COMMON_X11_UTIL_H_ |
