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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 #include "chrome/browser/dock_info.h" | |
| 6 | |
| 7 #include <gtk/gtk.h> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 #include "base/task.h" | |
| 11 #include "chrome/browser/browser_list.h" | |
| 12 #include "chrome/browser/browser_window.h" | |
| 13 #include "chrome/browser/gtk/browser_window_gtk.h" | |
| 14 #include "chrome/browser/gtk/gtk_util.h" | |
| 15 #include "gfx/native_widget_types.h" | |
| 16 | |
| 17 //////////////////////////////////////////////////////////////////////////////// | |
| 18 // BaseWindowFinder | |
| 19 // | |
| 20 // Base class used to locate a window. A subclass need only override | |
| 21 // ShouldStopIterating to determine when iteration should stop. | |
| 22 class BaseWindowFinder : public x11_util::EnumerateWindowsDelegate { | |
| 23 public: | |
| 24 explicit BaseWindowFinder(const std::set<GtkWidget*>& ignore) { | |
| 25 std::set<GtkWidget*>::iterator iter; | |
| 26 for (iter = ignore.begin(); iter != ignore.end(); iter++) { | |
| 27 XID xid = x11_util::GetX11WindowFromGtkWidget(*iter); | |
| 28 ignore_.insert(xid); | |
| 29 } | |
| 30 } | |
| 31 | |
| 32 virtual ~BaseWindowFinder() {} | |
| 33 | |
| 34 protected: | |
| 35 // Returns true if |window| is in the ignore list. | |
| 36 bool ShouldIgnoreWindow(XID window) { | |
| 37 return (ignore_.find(window) != ignore_.end()); | |
| 38 } | |
| 39 | |
| 40 // Returns true if iteration should stop, false otherwise. | |
| 41 virtual bool ShouldStopIterating(XID window) { | |
| 42 return false; | |
| 43 } | |
| 44 | |
| 45 private: | |
| 46 std::set<XID> ignore_; | |
| 47 | |
| 48 DISALLOW_COPY_AND_ASSIGN(BaseWindowFinder); | |
| 49 }; | |
| 50 | |
| 51 //////////////////////////////////////////////////////////////////////////////// | |
| 52 // TopMostFinder | |
| 53 // | |
| 54 // Helper class to determine if a particular point of a window is not obscured | |
| 55 // by another window. | |
| 56 class TopMostFinder : public BaseWindowFinder { | |
| 57 public: | |
| 58 // Returns true if |window| is not obscured by another window at the | |
| 59 // location |screen_loc|, not including the windows in |ignore|. | |
| 60 static bool IsTopMostWindowAtPoint(XID window, | |
| 61 const gfx::Point& screen_loc, | |
| 62 const std::set<GtkWidget*>& ignore) { | |
| 63 TopMostFinder finder(window, screen_loc, ignore); | |
| 64 return finder.is_top_most_; | |
| 65 } | |
| 66 | |
| 67 protected: | |
| 68 virtual bool ShouldStopIterating(XID window) { | |
| 69 if (BaseWindowFinder::ShouldIgnoreWindow(window)) | |
| 70 return false; | |
| 71 | |
| 72 if (window == target_) { | |
| 73 // Window is topmost, stop iterating. | |
| 74 is_top_most_ = true; | |
| 75 return true; | |
| 76 } | |
| 77 | |
| 78 if (!x11_util::IsWindowVisible(window)) { | |
| 79 // The window isn't visible, keep iterating. | |
| 80 return false; | |
| 81 } | |
| 82 | |
| 83 gfx::Rect rect; | |
| 84 if (x11_util::GetWindowRect(window, &rect) && rect.Contains(screen_loc_)) { | |
| 85 // At this point we haven't found our target window, so this window is | |
| 86 // higher in the z-order than the target window. If this window contains | |
| 87 // the point, then we can stop the search now because this window is | |
| 88 // obscuring the target window at this point. | |
| 89 return true; | |
| 90 } | |
| 91 | |
| 92 return false; | |
| 93 } | |
| 94 | |
| 95 private: | |
| 96 TopMostFinder(XID window, | |
| 97 const gfx::Point& screen_loc, | |
| 98 const std::set<GtkWidget*>& ignore) | |
| 99 : BaseWindowFinder(ignore), | |
| 100 target_(window), | |
| 101 screen_loc_(screen_loc), | |
| 102 is_top_most_(false) { | |
| 103 gtk_util::EnumerateTopLevelWindows(this); | |
| 104 } | |
| 105 | |
| 106 // The window we're looking for. | |
| 107 XID target_; | |
| 108 | |
| 109 // Location of window to find. | |
| 110 gfx::Point screen_loc_; | |
| 111 | |
| 112 // Is target_ the top most window? This is initially false but set to true | |
| 113 // in ShouldStopIterating if target_ is passed in. | |
| 114 bool is_top_most_; | |
| 115 | |
| 116 DISALLOW_COPY_AND_ASSIGN(TopMostFinder); | |
| 117 }; | |
| 118 | |
| 119 //////////////////////////////////////////////////////////////////////////////// | |
| 120 // LocalProcessWindowFinder | |
| 121 // | |
| 122 // Helper class to determine if a particular point of a window from our process | |
| 123 // is not obscured by another window. | |
| 124 class LocalProcessWindowFinder : public BaseWindowFinder { | |
| 125 public: | |
| 126 // Returns the XID from our process at screen_loc that is not obscured by | |
| 127 // another window. Returns 0 otherwise. | |
| 128 static XID GetProcessWindowAtPoint(const gfx::Point& screen_loc, | |
| 129 const std::set<GtkWidget*>& ignore) { | |
| 130 LocalProcessWindowFinder finder(screen_loc, ignore); | |
| 131 if (finder.result_ && | |
| 132 TopMostFinder::IsTopMostWindowAtPoint(finder.result_, screen_loc, | |
| 133 ignore)) { | |
| 134 return finder.result_; | |
| 135 } | |
| 136 return 0; | |
| 137 } | |
| 138 | |
| 139 protected: | |
| 140 virtual bool ShouldStopIterating(XID window) { | |
| 141 if (BaseWindowFinder::ShouldIgnoreWindow(window)) | |
| 142 return false; | |
| 143 | |
| 144 // Check if this window is in our process. | |
| 145 if (!BrowserWindowGtk::GetBrowserWindowForXID(window)) | |
| 146 return false; | |
| 147 | |
| 148 if (!x11_util::IsWindowVisible(window)) | |
| 149 return false; | |
| 150 | |
| 151 gfx::Rect rect; | |
| 152 if (x11_util::GetWindowRect(window, &rect) && rect.Contains(screen_loc_)) { | |
| 153 result_ = window; | |
| 154 return true; | |
| 155 } | |
| 156 | |
| 157 return false; | |
| 158 } | |
| 159 | |
| 160 private: | |
| 161 LocalProcessWindowFinder(const gfx::Point& screen_loc, | |
| 162 const std::set<GtkWidget*>& ignore) | |
| 163 : BaseWindowFinder(ignore), | |
| 164 screen_loc_(screen_loc), | |
| 165 result_(0) { | |
| 166 gtk_util::EnumerateTopLevelWindows(this); | |
| 167 } | |
| 168 | |
| 169 // Position of the mouse. | |
| 170 gfx::Point screen_loc_; | |
| 171 | |
| 172 // The resulting window. This is initially null but set to true in | |
| 173 // ShouldStopIterating if an appropriate window is found. | |
| 174 XID result_; | |
| 175 | |
| 176 DISALLOW_COPY_AND_ASSIGN(LocalProcessWindowFinder); | |
| 177 }; | |
| 178 | |
| 179 // static | |
| 180 DockInfo DockInfo::GetDockInfoAtPoint(const gfx::Point& screen_point, | |
| 181 const std::set<GtkWidget*>& ignore) { | |
| 182 if (factory_) | |
| 183 return factory_->GetDockInfoAtPoint(screen_point, ignore); | |
| 184 | |
| 185 NOTIMPLEMENTED(); | |
| 186 return DockInfo(); | |
| 187 } | |
| 188 | |
| 189 // static | |
| 190 GtkWindow* DockInfo::GetLocalProcessWindowAtPoint( | |
| 191 const gfx::Point& screen_point, | |
| 192 const std::set<GtkWidget*>& ignore) { | |
| 193 if (factory_) | |
| 194 return factory_->GetLocalProcessWindowAtPoint(screen_point, ignore); | |
| 195 | |
| 196 #if defined(OS_CHROMEOS) || defined(TOOLKIT_VIEWS) | |
| 197 return NULL; | |
| 198 #else | |
| 199 XID xid = | |
| 200 LocalProcessWindowFinder::GetProcessWindowAtPoint(screen_point, ignore); | |
| 201 return BrowserWindowGtk::GetBrowserWindowForXID(xid); | |
| 202 #endif | |
| 203 } | |
| 204 | |
| 205 bool DockInfo::GetWindowBounds(gfx::Rect* bounds) const { | |
| 206 if (!window()) | |
| 207 return false; | |
| 208 | |
| 209 int x, y, w, h; | |
| 210 gtk_window_get_position(window(), &x, &y); | |
| 211 gtk_window_get_size(window(), &w, &h); | |
| 212 bounds->SetRect(x, y, w, h); | |
| 213 return true; | |
| 214 } | |
| 215 | |
| 216 void DockInfo::SizeOtherWindowTo(const gfx::Rect& bounds) const { | |
| 217 gtk_window_move(window(), bounds.x(), bounds.y()); | |
| 218 gtk_window_resize(window(), bounds.width(), bounds.height()); | |
| 219 } | |
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