ipc/chromium/src/chrome/common/x11_util.h@8bccb770b82d (annotated)
ipc/chromium/src/chrome/common/x11_util.h
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
| michael@0 | 1 | // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef CHROME_COMMON_X11_UTIL_H_ |
| michael@0 | 6 | #define CHROME_COMMON_X11_UTIL_H_ |
| michael@0 | 7 | |
| michael@0 | 8 | // This file declares utility functions for X11 (Linux only). |
| michael@0 | 9 | // |
| michael@0 | 10 | // These functions do not require the Xlib headers to be included (which is why |
| michael@0 | 11 | // we use a void* for Visual*). The Xlib headers are highly polluting so we try |
| michael@0 | 12 | // hard to limit their spread into the rest of the code. |
| michael@0 | 13 | |
| michael@0 | 14 | #if (MOZ_WIDGET_GTK == 2) |
| michael@0 | 15 | typedef struct _GdkDrawable GdkWindow; |
| michael@0 | 16 | #else |
| michael@0 | 17 | typedef struct _GdkWindow GdkWindow; |
| michael@0 | 18 | #endif |
| michael@0 | 19 | typedef struct _GtkWidget GtkWidget; |
| michael@0 | 20 | typedef unsigned long XID; |
| michael@0 | 21 | typedef struct _XDisplay Display; |
| michael@0 | 22 | |
| michael@0 | 23 | namespace base { |
| michael@0 | 24 | class Thread; |
| michael@0 | 25 | } |
| michael@0 | 26 | namespace x11_util { |
| michael@0 | 27 | |
| michael@0 | 28 | // These functions use the GDK default display and this /must/ be called from |
| michael@0 | 29 | // the UI thread. Thus, they don't support multiple displays. |
| michael@0 | 30 | |
| michael@0 | 31 | // These functions cache their results. |
| michael@0 | 32 | |
| michael@0 | 33 | // Return an X11 connection for the current, primary display. |
| michael@0 | 34 | Display* GetXDisplay(); |
| michael@0 | 35 | // Return true iff the connection supports X shared memory |
| michael@0 | 36 | bool QuerySharedMemorySupport(Display* dpy); |
| michael@0 | 37 | // Return true iff the display supports Xrender |
| michael@0 | 38 | bool QueryRenderSupport(Display* dpy); |
| michael@0 | 39 | // Return the default screen number for the display |
| michael@0 | 40 | int GetDefaultScreen(Display* display); |
| michael@0 | 41 | |
| michael@0 | 42 | // These functions do not cache their results |
| michael@0 | 43 | |
| michael@0 | 44 | // Get the X window id for the default root window |
| michael@0 | 45 | XID GetX11RootWindow(); |
| michael@0 | 46 | // Get the X window id for the given GTK widget. |
| michael@0 | 47 | XID GetX11WindowFromGtkWidget(GtkWidget*); |
| michael@0 | 48 | XID GetX11WindowFromGdkWindow(GdkWindow*); |
| michael@0 | 49 | // Get a Visual from the given widget. Since we don't include the Xlib |
| michael@0 | 50 | // headers, this is returned as a void*. |
| michael@0 | 51 | void* GetVisualFromGtkWidget(GtkWidget*); |
| michael@0 | 52 | // Return the number of bits-per-pixel for a pixmap of the given depth |
| michael@0 | 53 | int BitsPerPixelForPixmapDepth(Display*, int depth); |
| michael@0 | 54 | |
| michael@0 | 55 | // Return a handle to a server side pixmap. |shared_memory_key| is a SysV |
| michael@0 | 56 | // IPC key. The shared memory region must contain 32-bit pixels. |
| michael@0 | 57 | XID AttachSharedMemory(Display* display, int shared_memory_support); |
| michael@0 | 58 | void DetachSharedMemory(Display* display, XID shmseg); |
| michael@0 | 59 | |
| michael@0 | 60 | // Return a handle to an XRender picture where |pixmap| is a handle to a |
| michael@0 | 61 | // pixmap containing Skia ARGB data. |
| michael@0 | 62 | XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap); |
| michael@0 | 63 | |
| michael@0 | 64 | void FreePicture(Display* display, XID picture); |
| michael@0 | 65 | void FreePixmap(Display* display, XID pixmap); |
| michael@0 | 66 | |
| michael@0 | 67 | // These functions are for performing X opertions outside of the UI thread. |
| michael@0 | 68 | |
| michael@0 | 69 | // Return the Display for the secondary X connection. We keep a second |
| michael@0 | 70 | // connection around for making X requests outside of the UI thread. |
| michael@0 | 71 | // This function may only be called from the BACKGROUND_X11 thread. |
| michael@0 | 72 | Display* GetSecondaryDisplay(); |
| michael@0 | 73 | |
| michael@0 | 74 | // Since one cannot include both WebKit header and Xlib headers in the same |
| michael@0 | 75 | // file (due to collisions), we wrap all the Xlib functions that we need here. |
| michael@0 | 76 | // These functions must be called on the BACKGROUND_X11 thread since they |
| michael@0 | 77 | // reference GetSecondaryDisplay(). |
| michael@0 | 78 | |
| michael@0 | 79 | // Get the position of the given window in screen coordinates as well as its |
| michael@0 | 80 | // current size. |
| michael@0 | 81 | bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height, |
| michael@0 | 82 | XID window); |
| michael@0 | 83 | |
| michael@0 | 84 | // Find the immediate parent of an X window. |
| michael@0 | 85 | // |
| michael@0 | 86 | // parent_window: (output) the parent window of |window|, or 0. |
| michael@0 | 87 | // parent_is_root: (output) true iff the parent of |window| is the root window. |
| michael@0 | 88 | bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window); |
| michael@0 | 89 | |
| michael@0 | 90 | } // namespace x11_util |
| michael@0 | 91 | |
| michael@0 | 92 | #endif // CHROME_COMMON_X11_UTIL_H_ |
