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ash / wm / workspace / workspace_event_handler.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/wm/workspace/workspace_event_handler.h"
#include "ash/public/cpp/shell_window_ids.h"
#include "ash/shell.h"
#include "ash/wm/overview/overview_controller.h"
#include "ash/wm/overview/overview_session.h"
#include "ash/wm/splitview/split_view_controller.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.h"
#include "ash/wm/wm_event.h"
#include "ash/wm/workspace/multi_window_resize_controller.h"
#include "base/metrics/user_metrics.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/base/hit_test.h"
#include "ui/events/event.h"
namespace ash {
WorkspaceEventHandler::WorkspaceEventHandler(aura::Window* workspace_window)
: workspace_window_(workspace_window), click_component_(HTNOWHERE) {
workspace_window_->AddPreTargetHandler(this);
if (workspace_window->GetId() != kShellWindowId_FloatContainer) {
multi_window_resize_controller_ =
std::make_unique<MultiWindowResizeController>();
}
}
WorkspaceEventHandler::~WorkspaceEventHandler() {
workspace_window_->RemovePreTargetHandler(this);
}
void WorkspaceEventHandler::OnMouseEvent(ui::MouseEvent* event) {
aura::Window* target = static_cast<aura::Window*>(event->target());
if (event->type() == ui::EventType::kMousePressed &&
event->IsOnlyLeftMouseButton() &&
((event->flags() & (ui::EF_IS_DOUBLE_CLICK | ui::EF_IS_TRIPLE_CLICK)) ==
0)) {
click_component_ =
window_util::GetNonClientComponent(target, event->location());
}
if (event->handled())
return;
switch (event->type()) {
case ui::EventType::kMouseMoved: {
if (multi_window_resize_controller_) {
const int component =
window_util::GetNonClientComponent(target, event->location());
multi_window_resize_controller_->Show(target, component,
event->location());
}
break;
}
case ui::EventType::kMouseEntered:
break;
case ui::EventType::kMouseCaptureChanged:
case ui::EventType::kMouseExited:
break;
case ui::EventType::kMousePressed: {
WindowState* target_state = WindowState::Get(target->GetToplevelWindow());
// No action for windows that aren't managed by WindowState.
if (!target_state)
return;
if (event->IsOnlyLeftMouseButton()) {
if (event->flags() & ui::EF_IS_DOUBLE_CLICK) {
int component =
window_util::GetNonClientComponent(target, event->location());
if (component == HTCAPTION && component == click_component_) {
base::RecordAction(
base::UserMetricsAction("Caption_ClickTogglesMaximize"));
const WMEvent wm_event(WM_EVENT_TOGGLE_MAXIMIZE_CAPTION);
target_state->OnWMEvent(&wm_event);
event->StopPropagation();
}
click_component_ = HTNOWHERE;
}
} else {
click_component_ = HTNOWHERE;
}
HandleResizeDoubleClick(target_state, event);
break;
}
default:
break;
}
}
void WorkspaceEventHandler::OnGestureEvent(ui::GestureEvent* event) {
if (event->handled() || event->type() != ui::EventType::kGestureTap) {
return;
}
aura::Window* target = static_cast<aura::Window*>(event->target());
int previous_target_component = click_component_;
click_component_ =
window_util::GetNonClientComponent(target, event->location());
if (click_component_ != HTCAPTION)
return;
if (event->details().tap_count() != 2)
return;
if (click_component_ == previous_target_component) {
base::RecordAction(
base::UserMetricsAction("Caption_GestureTogglesMaximize"));
const WMEvent wm_event(WM_EVENT_TOGGLE_MAXIMIZE_CAPTION);
WindowState::Get(target)->OnWMEvent(&wm_event);
event->StopPropagation();
}
click_component_ = HTNOWHERE;
}
void WorkspaceEventHandler::HandleResizeDoubleClick(WindowState* target_state,
ui::MouseEvent* event) {
aura::Window* target = target_state->window();
if ((event->flags() & ui::EF_IS_DOUBLE_CLICK) != 0 && target->delegate()) {
const int component =
window_util::GetNonClientComponent(target, event->location());
if (component == HTBOTTOM || component == HTTOP) {
base::RecordAction(base::UserMetricsAction(
"WindowBorder_ClickTogglesSingleAxisMaximize"));
const WMEvent wm_event(WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE);
target_state->OnWMEvent(&wm_event);
event->StopPropagation();
} else if (component == HTLEFT || component == HTRIGHT) {
base::RecordAction(base::UserMetricsAction(
"WindowBorder_ClickTogglesSingleAxisMaximize"));
// If overview is in session, meaning that |target| is a clamshell split
// view window, then end overview (thereby ending clamshell split view).
OverviewController* overview_controller =
Shell::Get()->overview_controller();
if (overview_controller->InOverviewSession()) {
DCHECK(SplitViewController::Get(target)->InClamshellSplitViewMode());
DCHECK(SplitViewController::Get(target)->IsWindowInSplitView(target));
// For |target| to have a snapped window state (in split view or not),
// it must have no maximum size (see |WindowState::CanSnap|). That is
// important here because when |target| has a maximum width, the
// |WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE| event will do nothing, meaning
// it would be rather inappropriate to end overview as below, and of
// course it would be blatantly inappropriate to make the following call
// to |OverviewSession::SetWindowListNotAnimatedWhenExiting|.
std::optional<gfx::Size> max_size =
target->delegate()->GetMaximumSize();
DCHECK(!max_size.has_value() || max_size.value() == gfx::Size());
overview_controller->overview_session()
->SetWindowListNotAnimatedWhenExiting(target->GetRootWindow());
overview_controller->EndOverview(OverviewEndAction::kSplitView);
}
const WMEvent wm_event(WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE);
target_state->OnWMEvent(&wm_event);
event->StopPropagation();
}
}
}
} // namespace ash