1 // Copyright 2014 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 "ui/views/widget/desktop_aura/x11_topmost_window_finder.h" 6 7 #include <X11/Xutil.h> 8 9 #include "ui/aura/client/screen_position_client.h" 10 #include "ui/aura/window.h" 11 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h" 12 13 namespace views { 14 15 X11TopmostWindowFinder::X11TopmostWindowFinder() : toplevel_(None) { 16 } 17 18 X11TopmostWindowFinder::~X11TopmostWindowFinder() { 19 } 20 21 aura::Window* X11TopmostWindowFinder::FindLocalProcessWindowAt( 22 const gfx::Point& screen_loc, 23 const std::set<aura::Window*>& ignore) { 24 screen_loc_ = screen_loc; 25 ignore_ = ignore; 26 27 std::vector<aura::Window*> local_process_windows = 28 DesktopWindowTreeHostX11::GetAllOpenWindows(); 29 bool found_local_process_window = false; 30 for (size_t i = 0; i < local_process_windows.size(); ++i) { 31 if (ShouldStopIteratingAtLocalProcessWindow(local_process_windows[i])) { 32 found_local_process_window = true; 33 break; 34 } 35 } 36 if (!found_local_process_window) 37 return NULL; 38 39 ui::EnumerateTopLevelWindows(this); 40 return DesktopWindowTreeHostX11::GetContentWindowForXID(toplevel_); 41 } 42 43 XID X11TopmostWindowFinder::FindWindowAt(const gfx::Point& screen_loc) { 44 screen_loc_ = screen_loc; 45 ui::EnumerateTopLevelWindows(this); 46 return toplevel_; 47 } 48 49 bool X11TopmostWindowFinder::ShouldStopIterating(XID xid) { 50 if (!ui::IsWindowVisible(xid)) 51 return false; 52 53 aura::Window* window = 54 views::DesktopWindowTreeHostX11::GetContentWindowForXID(xid); 55 if (window) { 56 if (ShouldStopIteratingAtLocalProcessWindow(window)) { 57 toplevel_ = xid; 58 return true; 59 } 60 return false; 61 } 62 63 if (ui::WindowContainsPoint(xid, screen_loc_)) { 64 toplevel_ = xid; 65 return true; 66 } 67 return false; 68 } 69 70 bool X11TopmostWindowFinder::ShouldStopIteratingAtLocalProcessWindow( 71 aura::Window* window) { 72 if (ignore_.find(window) != ignore_.end()) 73 return false; 74 75 // Currently |window|->IsVisible() always returns true. 76 // TODO(pkotwicz): Fix this. crbug.com/353038 77 if (!window->IsVisible()) 78 return false; 79 80 DesktopWindowTreeHostX11* host = 81 DesktopWindowTreeHostX11::GetHostForXID( 82 window->GetHost()->GetAcceleratedWidget()); 83 if (!host->GetX11RootWindowOuterBounds().Contains(screen_loc_)) 84 return false; 85 86 ::Region shape = host->GetWindowShape(); 87 if (!shape) 88 return true; 89 90 aura::client::ScreenPositionClient* screen_position_client = 91 aura::client::GetScreenPositionClient(window->GetRootWindow()); 92 gfx::Point window_loc(screen_loc_); 93 screen_position_client->ConvertPointFromScreen(window, &window_loc); 94 return XPointInRegion(shape, window_loc.x(), window_loc.y()) == True; 95 } 96 97 } // namespace views 98