ash/wm/workspace/workspace_event_handler.cc

   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 "ash/wm/workspace/workspace_event_handler.h"
   6
   7 #include "ash/metrics/user_metrics_recorder.h"
   8 #include "ash/shell.h"
   9 #include "ash/touch/touch_uma.h"
  10 #include "ash/wm/window_state.h"
  11 #include "ash/wm/wm_event.h"
  12 #include "ui/aura/window.h"
  13 #include "ui/aura/window_delegate.h"
  14 #include "ui/base/hit_test.h"
  15
  16 namespace ash {
  17
  18 WorkspaceEventHandler::WorkspaceEventHandler()
  19     : click_component_(HTNOWHERE) {
  20 }
  21
  22 WorkspaceEventHandler::~WorkspaceEventHandler() {
  23 }
  24
  25 void WorkspaceEventHandler::OnMouseEvent(ui::MouseEvent* event) {
  26   aura::Window* target = static_cast<aura::Window*>(event->target());
  27   if (event->type() == ui::ET_MOUSE_PRESSED &&
  28       event->IsOnlyLeftMouseButton() &&
  29       ((event->flags() &
  30           (ui::EF_IS_DOUBLE_CLICK | ui::EF_IS_TRIPLE_CLICK)) == 0)) {
  31     click_component_ = target->delegate()->
  32         GetNonClientComponent(event->location());
  33   }
  34
  35   if (event->handled())
  36     return;
  37
  38   switch (event->type()) {
  39     case ui::ET_MOUSE_MOVED: {
  40       int component =
  41           target->delegate()->GetNonClientComponent(event->location());
  42       multi_window_resize_controller_.Show(target, component,
  43                                            event->location());
  44       break;
  45     }
  46     case ui::ET_MOUSE_ENTERED:
  47       break;
  48     case ui::ET_MOUSE_CAPTURE_CHANGED:
  49     case ui::ET_MOUSE_EXITED:
  50       break;
  51     case ui::ET_MOUSE_PRESSED: {
  52       wm::WindowState* target_state = wm::GetWindowState(target);
  53
  54       if (event->IsOnlyLeftMouseButton()) {
  55         if (event->flags() & ui::EF_IS_DOUBLE_CLICK) {
  56           int component = target->delegate()->
  57               GetNonClientComponent(event->location());
  58           if (component == HTCAPTION &&
  59               component == click_component_) {
  60             ash::Shell::GetInstance()->metrics()->RecordUserMetricsAction(
  61                 ash::UMA_TOGGLE_MAXIMIZE_CAPTION_CLICK);
  62             const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION);
  63             target_state->OnWMEvent(&wm_event);
  64             event->StopPropagation();
  65           }
  66           // WindowEventHandler can receive each event up to two times. Once a
  67           // double-click has been received clear the target. Otherwise a
  68           // duplicate of the event will be checking target history against
  69           // itself.
  70           click_component_ = HTNOWHERE;
  71         }
  72       } else {
  73         click_component_ = HTNOWHERE;
  74       }
  75
  76       multi_window_resize_controller_.Hide();
  77       HandleVerticalResizeDoubleClick(target_state, event);
  78       break;
  79     }
  80     default:
  81       break;
  82   }
  83 }
  84
  85 void WorkspaceEventHandler::OnGestureEvent(ui::GestureEvent* event) {
  86   if (event->handled() || event->type() != ui::ET_GESTURE_TAP)
  87     return;
  88
  89   aura::Window* target = static_cast<aura::Window*>(event->target());
  90   int previous_target_component = click_component_;
  91   click_component_ = target->delegate()->
  92       GetNonClientComponent(event->location());
  93
  94   if (click_component_ != HTCAPTION)
  95     return;
  96
  97   if (event->details().tap_count() != 2) {
  98     // Note: TouchUMA::GESTURE_FRAMEVIEW_TAP is counted twice for each tap.
  99     TouchUMA::GetInstance()->
 100         RecordGestureAction(TouchUMA::GESTURE_FRAMEVIEW_TAP);
 101     return;
 102   }
 103
 104   if (click_component_ == previous_target_component) {
 105     ash::Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 106         ash::UMA_TOGGLE_MAXIMIZE_CAPTION_GESTURE);
 107     // Note: TouchUMA::GESTURE_FRAMEVIEW_TAP is counted twice each time
 108     // TouchUMA::GESTURE_MAXIMIZE_DOUBLETAP is counted once.
 109     TouchUMA::GetInstance()->RecordGestureAction(
 110         TouchUMA::GESTURE_MAXIMIZE_DOUBLETAP);
 111     const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION);
 112     wm::GetWindowState(target)->OnWMEvent(&wm_event);
 113     event->StopPropagation();
 114   }
 115   click_component_ = HTNOWHERE;
 116 }
 117
 118 void WorkspaceEventHandler::HandleVerticalResizeDoubleClick(
 119     wm::WindowState* target_state,
 120     ui::MouseEvent* event) {
 121   aura::Window* target = target_state->window();
 122   if (event->flags() & ui::EF_IS_DOUBLE_CLICK) {
 123     int component =
 124         target->delegate()->GetNonClientComponent(event->location());
 125     if (component == HTBOTTOM || component == HTTOP) {
 126       Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 127           UMA_TOGGLE_SINGLE_AXIS_MAXIMIZE_BORDER_CLICK);
 128       const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE);
 129       target_state->OnWMEvent(&wm_event);
 130       event->StopPropagation();
 131     } else if (component == HTLEFT || component == HTRIGHT) {
 132       Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 133           UMA_TOGGLE_SINGLE_AXIS_MAXIMIZE_BORDER_CLICK);
 134       const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE);
 135       target_state->OnWMEvent(&wm_event);
 136       event->StopPropagation();
 137     }
 138   }
 139 }
 140
 141 }  // namespace ash