src/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc

   1 // Copyright 2013 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 "content/browser/renderer_host/input/synthetic_gesture_target_aura.h"
   6
   7 #include "content/browser/renderer_host/render_widget_host_impl.h"
   8 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
   9 #include "content/browser/renderer_host/ui_events_helper.h"
  10 #include "ui/aura/window.h"
  11 #include "ui/aura/window_tree_host.h"
  12 #include "ui/events/event_processor.h"
  13 #include "ui/events/gestures/gesture_configuration.h"
  14
  15 using blink::WebTouchEvent;
  16 using blink::WebMouseWheelEvent;
  17
  18 namespace content {
  19
  20 SyntheticGestureTargetAura::SyntheticGestureTargetAura(
  21     RenderWidgetHostImpl* host)
  22     : SyntheticGestureTargetBase(host) {
  23 }
  24
  25 void SyntheticGestureTargetAura::DispatchWebTouchEventToPlatform(
  26     const WebTouchEvent& web_touch,
  27     const ui::LatencyInfo& latency_info) {
  28   TouchEventWithLatencyInfo touch_with_latency(web_touch, latency_info);
  29   ScopedVector<ui::TouchEvent> events;
  30   bool conversion_success = MakeUITouchEventsFromWebTouchEvents(
  31       touch_with_latency, &events, LOCAL_COORDINATES);
  32   DCHECK(conversion_success);
  33
  34   aura::Window* window = GetWindow();
  35   aura::WindowTreeHost* host = window->GetHost();
  36   for (ScopedVector<ui::TouchEvent>::iterator iter = events.begin(),
  37       end = events.end(); iter != end; ++iter) {
  38     (*iter)->ConvertLocationToTarget(window, host->window());
  39     ui::EventDispatchDetails details =
  40         host->event_processor()->OnEventFromSource(*iter);
  41     if (details.dispatcher_destroyed)
  42       break;
  43   }
  44 }
  45
  46 void SyntheticGestureTargetAura::DispatchWebMouseWheelEventToPlatform(
  47       const blink::WebMouseWheelEvent& web_wheel,
  48       const ui::LatencyInfo&) {
  49   gfx::Point location(web_wheel.x, web_wheel.y);
  50   ui::MouseEvent mouse_event(
  51       ui::ET_MOUSEWHEEL, location, location, ui::EF_NONE, ui::EF_NONE);
  52   ui::MouseWheelEvent wheel_event(
  53       mouse_event, web_wheel.deltaX, web_wheel.deltaY);
  54
  55   aura::Window* window = GetWindow();
  56   wheel_event.ConvertLocationToTarget(window, window->GetRootWindow());
  57   ui::EventDispatchDetails details =
  58       window->GetHost()->event_processor()->OnEventFromSource(&wheel_event);
  59   if (details.dispatcher_destroyed)
  60     return;
  61 }
  62
  63 namespace {
  64
  65 ui::EventType
  66 WebMouseEventTypeToEventType(blink::WebInputEvent::Type web_type) {
  67   switch (web_type) {
  68     case blink::WebInputEvent::MouseDown:
  69       return ui::ET_MOUSE_PRESSED;
  70
  71     case blink::WebInputEvent::MouseUp:
  72       return ui::ET_MOUSE_RELEASED;
  73
  74     case blink::WebInputEvent::MouseMove:
  75       return ui::ET_MOUSE_MOVED;
  76
  77     case blink::WebInputEvent::MouseEnter:
  78       return ui::ET_MOUSE_ENTERED;
  79
  80     case blink::WebInputEvent::MouseLeave:
  81       return ui::ET_MOUSE_EXITED;
  82
  83     case blink::WebInputEvent::ContextMenu:
  84       NOTREACHED() << "WebInputEvent::ContextMenu not supported by"
  85           "SyntheticGestureTargetAura";
  86
  87     default:
  88       NOTREACHED();
  89   }
  90
  91   return ui::ET_UNKNOWN;
  92 }
  93
  94 int WebMouseEventButtonToFlags(blink::WebMouseEvent::Button button) {
  95   switch (button) {
  96     case blink::WebMouseEvent::ButtonLeft:
  97       return ui::EF_LEFT_MOUSE_BUTTON;
  98
  99     case blink::WebMouseEvent::ButtonMiddle:
 100       return ui::EF_MIDDLE_MOUSE_BUTTON;
 101
 102     case blink::WebMouseEvent::ButtonRight:
 103       return ui::EF_RIGHT_MOUSE_BUTTON;
 104
 105     default:
 106       NOTREACHED();
 107   }
 108
 109   return 0;
 110 }
 111
 112 }  // namespace
 113
 114 void SyntheticGestureTargetAura::DispatchWebMouseEventToPlatform(
 115       const blink::WebMouseEvent& web_mouse,
 116       const ui::LatencyInfo& latency_info) {
 117   gfx::Point location(web_mouse.x, web_mouse.y);
 118   ui::EventType event_type = WebMouseEventTypeToEventType(web_mouse.type);
 119   int flags = WebMouseEventButtonToFlags(web_mouse.button);
 120   ui::MouseEvent mouse_event(event_type, location, location, flags, flags);
 121
 122   aura::Window* window = GetWindow();
 123   mouse_event.ConvertLocationToTarget(window, window->GetRootWindow());
 124   ui::EventDispatchDetails details =
 125       window->GetHost()->event_processor()->OnEventFromSource(&mouse_event);
 126   if (details.dispatcher_destroyed)
 127     return;
 128 }
 129
 130 SyntheticGestureParams::GestureSourceType
 131 SyntheticGestureTargetAura::GetDefaultSyntheticGestureSourceType() const {
 132   return SyntheticGestureParams::TOUCH_INPUT;
 133 }
 134
 135 int SyntheticGestureTargetAura::GetTouchSlopInDips() const {
 136   // - 1 because Aura considers a pointer to be moving if it has moved at least
 137   // 'max_touch_move_in_pixels_for_click' pixels.
 138   return ui::GestureConfiguration::max_touch_move_in_pixels_for_click() - 1;
 139 }
 140
 141 aura::Window* SyntheticGestureTargetAura::GetWindow() const {
 142   aura::Window* window = render_widget_host()->GetView()->GetNativeView();
 143   DCHECK(window);
 144   return window;
 145 }
 146
 147 }  // namespace content