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| 1 // Copyright (c) 2012 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 #include "chrome/browser/fullscreen.h" | |
| 6 | |
| 7 #include <gdk/gdk.h> | |
| 8 #include <gdk/gdkx.h> | |
| 9 | |
| 10 #include <algorithm> | |
| 11 #include <vector> | |
| 12 | |
| 13 #include "base/basictypes.h" | |
| 14 #include "ui/base/x/x11_util.h" | |
| 15 #include "ui/gfx/rect.h" | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 // TODO (jianli): Merge with ui::EnumerateTopLevelWindows. | |
| 20 void EnumerateAllChildWindows(ui::EnumerateWindowsDelegate* delegate, | |
| 21 XID window) { | |
| 22 std::vector<XID> windows; | |
| 23 | |
| 24 if (!ui::GetXWindowStack(window, &windows)) { | |
| 25 // Window Manager doesn't support _NET_CLIENT_LIST_STACKING, so fall back | |
| 26 // to old school enumeration of all X windows. | |
| 27 XID root, parent, *children; | |
| 28 unsigned int num_children; | |
| 29 int status = XQueryTree(gfx::GetXDisplay(), window, &root, &parent, | |
| 30 &children, &num_children); | |
| 31 if (status) { | |
| 32 for (long i = static_cast<long>(num_children) - 1; i >= 0; i--) | |
| 33 windows.push_back(children[i]); | |
| 34 XFree(children); | |
| 35 } | |
| 36 } | |
| 37 | |
| 38 std::vector<XID>::iterator iter; | |
| 39 for (iter = windows.begin(); iter != windows.end(); iter++) { | |
| 40 if (delegate->ShouldStopIterating(*iter)) | |
| 41 return; | |
| 42 } | |
| 43 } | |
| 44 | |
| 45 // To find the top-most window: | |
| 46 // 1) Enumerate all top-level windows from the top to the bottom. | |
| 47 // 2) For each window: | |
| 48 // 2.1) If it is hidden, continue the iteration. | |
| 49 // 2.2) If it is managed by the Window Manager (has a WM_STATE property). | |
| 50 // Return this window as the top-most window. | |
| 51 // 2.3) Enumerate all its child windows. If there is a child window that is | |
| 52 // managed by the Window Manager (has a WM_STATE property). Return this | |
| 53 // child window as the top-most window. | |
| 54 // 2.4) Otherwise, continue the iteration. | |
| 55 | |
| 56 class WindowManagerWindowFinder : public ui::EnumerateWindowsDelegate { | |
| 57 public: | |
| 58 WindowManagerWindowFinder() : window_(None) { } | |
| 59 | |
| 60 XID window() const { return window_; } | |
| 61 | |
| 62 protected: | |
| 63 virtual bool ShouldStopIterating(XID window) OVERRIDE { | |
| 64 if (ui::PropertyExists(window, "WM_STATE")) { | |
| 65 window_ = window; | |
| 66 return true; | |
| 67 } | |
| 68 return false; | |
| 69 } | |
| 70 | |
| 71 private: | |
| 72 XID window_; | |
| 73 | |
| 74 DISALLOW_COPY_AND_ASSIGN(WindowManagerWindowFinder); | |
| 75 }; | |
| 76 | |
| 77 class TopMostWindowFinder : public ui::EnumerateWindowsDelegate { | |
| 78 public: | |
| 79 TopMostWindowFinder() | |
| 80 : top_most_window_(None) {} | |
| 81 | |
| 82 XID top_most_window() const { return top_most_window_; } | |
| 83 | |
| 84 protected: | |
| 85 virtual bool ShouldStopIterating(XID window) OVERRIDE { | |
| 86 if (!ui::IsWindowVisible(window)) | |
| 87 return false; | |
| 88 if (ui::PropertyExists(window, "WM_STATE")) { | |
| 89 top_most_window_ = window; | |
| 90 return true; | |
| 91 } | |
| 92 WindowManagerWindowFinder child_finder; | |
| 93 EnumerateAllChildWindows(&child_finder, window); | |
| 94 XID child_window = child_finder.window(); | |
| 95 if (child_window == None) | |
| 96 return false; | |
| 97 top_most_window_ = child_window; | |
| 98 return true; | |
| 99 } | |
| 100 | |
| 101 private: | |
| 102 XID top_most_window_; | |
| 103 | |
| 104 DISALLOW_COPY_AND_ASSIGN(TopMostWindowFinder); | |
| 105 }; | |
| 106 | |
| 107 bool IsTopMostWindowFullScreen() { | |
| 108 // Find the topmost window. | |
| 109 TopMostWindowFinder finder; | |
| 110 EnumerateAllChildWindows(&finder, ui::GetX11RootWindow()); | |
| 111 XID window = finder.top_most_window(); | |
| 112 if (window == None) | |
| 113 return false; | |
| 114 | |
| 115 // Make sure it is not the desktop window. | |
| 116 static Atom desktop_atom = gdk_x11_get_xatom_by_name_for_display( | |
| 117 gdk_display_get_default(), "_NET_WM_WINDOW_TYPE_DESKTOP"); | |
| 118 | |
| 119 std::vector<Atom> atom_properties; | |
| 120 if (ui::GetAtomArrayProperty(window, | |
| 121 "_NET_WM_WINDOW_TYPE", | |
| 122 &atom_properties) && | |
| 123 std::find(atom_properties.begin(), atom_properties.end(), desktop_atom) | |
| 124 != atom_properties.end()) | |
| 125 return false; | |
| 126 | |
| 127 // If it is a GDK window, check it using gdk function. | |
| 128 GdkWindow* gwindow = gdk_window_lookup(window); | |
| 129 if (gwindow && window != GDK_ROOT_WINDOW()) | |
| 130 return gdk_window_get_state(gwindow) == GDK_WINDOW_STATE_FULLSCREEN; | |
| 131 | |
| 132 // Otherwise, do the check via xlib function. | |
| 133 return ui::IsX11WindowFullScreen(window); | |
| 134 } | |
| 135 | |
| 136 } | |
| 137 | |
| 138 bool IsFullScreenMode() { | |
| 139 gdk_error_trap_push(); | |
| 140 bool result = IsTopMostWindowFullScreen(); | |
| 141 bool got_error = gdk_error_trap_pop(); | |
| 142 return result && !got_error; | |
| 143 } | |
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Chromium Code Reviews
Issue 231733005:
Delete the GTK+ port of Chrome. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src