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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/input/synthetic_gesture_target_aura.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_view_aura.h"
#include "content/browser/renderer_host/ui_events_helper.h"
#include "third_party/WebKit/public/platform/WebScreenInfo.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tree_host.h"
#include "ui/events/event_processor.h"
#include "ui/events/event_utils.h"
#include "ui/events/gesture_detection/gesture_configuration.h"
using blink::WebTouchEvent;
using blink::WebMouseWheelEvent;
namespace content {
SyntheticGestureTargetAura::SyntheticGestureTargetAura(
RenderWidgetHostImpl* host)
: SyntheticGestureTargetBase(host) {
blink::WebScreenInfo screenInfo;
host->GetWebScreenInfo(&screenInfo);
device_scale_factor_ = screenInfo.deviceScaleFactor;
}
void SyntheticGestureTargetAura::DispatchWebTouchEventToPlatform(
const WebTouchEvent& web_touch,
const ui::LatencyInfo& latency_info) {
TouchEventWithLatencyInfo touch_with_latency(web_touch, latency_info);
for (size_t i = 0; i < touch_with_latency.event.touchesLength; i++) {
touch_with_latency.event.touches[i].position.x *= device_scale_factor_;
touch_with_latency.event.touches[i].position.y *= device_scale_factor_;
touch_with_latency.event.touches[i].radiusX *= device_scale_factor_;
touch_with_latency.event.touches[i].radiusY *= device_scale_factor_;
}
ScopedVector<ui::TouchEvent> events;
bool conversion_success = MakeUITouchEventsFromWebTouchEvents(
touch_with_latency, &events, LOCAL_COORDINATES);
DCHECK(conversion_success);
aura::Window* window = GetWindow();
aura::WindowTreeHost* host = window->GetHost();
for (ScopedVector<ui::TouchEvent>::iterator iter = events.begin(),
end = events.end(); iter != end; ++iter) {
(*iter)->ConvertLocationToTarget(window, host->window());
ui::EventDispatchDetails details =
host->event_processor()->OnEventFromSource(*iter);
if (details.dispatcher_destroyed)
break;
}
}
void SyntheticGestureTargetAura::DispatchWebMouseWheelEventToPlatform(
const blink::WebMouseWheelEvent& web_wheel,
const ui::LatencyInfo&) {
ui::MouseEvent mouse_event(ui::ET_MOUSEWHEEL, gfx::Point(), gfx::Point(),
ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
gfx::PointF location(web_wheel.x * device_scale_factor_,
web_wheel.y * device_scale_factor_);
mouse_event.set_location_f(location);
mouse_event.set_root_location_f(location);
ui::MouseWheelEvent wheel_event(
mouse_event, web_wheel.deltaX, web_wheel.deltaY);
aura::Window* window = GetWindow();
wheel_event.ConvertLocationToTarget(window, window->GetRootWindow());
ui::EventDispatchDetails details =
window->GetHost()->event_processor()->OnEventFromSource(&wheel_event);
if (details.dispatcher_destroyed)
return;
}
namespace {
ui::EventType
WebMouseEventTypeToEventType(blink::WebInputEvent::Type web_type) {
switch (web_type) {
case blink::WebInputEvent::MouseDown:
return ui::ET_MOUSE_PRESSED;
case blink::WebInputEvent::MouseUp:
return ui::ET_MOUSE_RELEASED;
case blink::WebInputEvent::MouseMove:
return ui::ET_MOUSE_MOVED;
case blink::WebInputEvent::MouseEnter:
return ui::ET_MOUSE_ENTERED;
case blink::WebInputEvent::MouseLeave:
return ui::ET_MOUSE_EXITED;
case blink::WebInputEvent::ContextMenu:
NOTREACHED() << "WebInputEvent::ContextMenu not supported by"
"SyntheticGestureTargetAura";
default:
NOTREACHED();
}
return ui::ET_UNKNOWN;
}
int WebMouseEventButtonToFlags(blink::WebMouseEvent::Button button) {
switch (button) {
case blink::WebMouseEvent::ButtonLeft:
return ui::EF_LEFT_MOUSE_BUTTON;
case blink::WebMouseEvent::ButtonMiddle:
return ui::EF_MIDDLE_MOUSE_BUTTON;
case blink::WebMouseEvent::ButtonRight:
return ui::EF_RIGHT_MOUSE_BUTTON;
default:
NOTREACHED();
}
return 0;
}
} // namespace
void SyntheticGestureTargetAura::DispatchWebMouseEventToPlatform(
const blink::WebMouseEvent& web_mouse,
const ui::LatencyInfo& latency_info) {
ui::EventType event_type = WebMouseEventTypeToEventType(web_mouse.type);
int flags = WebMouseEventButtonToFlags(web_mouse.button);
ui::MouseEvent mouse_event(event_type, gfx::Point(), gfx::Point(),
ui::EventTimeForNow(), flags, flags);
gfx::PointF location(web_mouse.x * device_scale_factor_,
web_mouse.y * device_scale_factor_);
mouse_event.set_location_f(location);
mouse_event.set_root_location_f(location);
aura::Window* window = GetWindow();
mouse_event.ConvertLocationToTarget(window, window->GetRootWindow());
ui::EventDispatchDetails details =
window->GetHost()->event_processor()->OnEventFromSource(&mouse_event);
if (details.dispatcher_destroyed)
return;
}
SyntheticGestureParams::GestureSourceType
SyntheticGestureTargetAura::GetDefaultSyntheticGestureSourceType() const {
return SyntheticGestureParams::TOUCH_INPUT;
}
float SyntheticGestureTargetAura::GetTouchSlopInDips() const {
// - 1 because Aura considers a pointer to be moving if it has moved at least
// 'max_touch_move_in_pixels_for_click' pixels.
return ui::GestureConfiguration::GetInstance()
->max_touch_move_in_pixels_for_click() -
1;
}
float SyntheticGestureTargetAura::GetMinScalingSpanInDips() const {
return ui::GestureConfiguration::GetInstance()
->min_distance_for_pinch_scroll_in_pixels();
}
aura::Window* SyntheticGestureTargetAura::GetWindow() const {
aura::Window* window = render_widget_host()->GetView()->GetNativeView();
DCHECK(window);
return window;
}
} // namespace content
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