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shell_surface_base.cc
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// Copyright 2015 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 "components/exo/shell_surface_base.h"
#include <algorithm>
#include "ash/frame/custom_frame_view_ash.h"
#include "ash/public/cpp/shelf_types.h"
#include "ash/public/cpp/shell_window_ids.h"
#include "ash/public/cpp/window_properties.h"
#include "ash/public/cpp/window_state_type.h"
#include "ash/public/interfaces/window_pin_type.mojom.h"
#include "ash/wm/drag_window_resizer.h"
#include "ash/wm/window_resizer.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_state_delegate.h"
#include "ash/wm/window_util.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_event_argument.h"
#include "cc/trees/layer_tree_frame_sink.h"
#include "components/exo/surface.h"
#include "components/exo/wm_helper.h"
#include "services/ui/public/interfaces/window_tree_constants.mojom.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/client/cursor_client.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_targeter.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/accelerators/accelerator.h"
#include "ui/base/class_property.h"
#include "ui/compositor/compositor.h"
#include "ui/display/display.h"
#include "ui/display/screen.h"
#include "ui/gfx/geometry/vector2d_conversions.h"
#include "ui/gfx/path.h"
#include "ui/views/widget/widget.h"
#include "ui/wm/core/coordinate_conversion.h"
#include "ui/wm/core/shadow.h"
#include "ui/wm/core/shadow_controller.h"
#include "ui/wm/core/shadow_types.h"
#include "ui/wm/core/window_animations.h"
#include "ui/wm/core/window_util.h"
namespace exo {
namespace {
DEFINE_LOCAL_UI_CLASS_PROPERTY_KEY(Surface*, kMainSurfaceKey, nullptr)
// Application Id set by the client.
DEFINE_OWNED_UI_CLASS_PROPERTY_KEY(std::string, kApplicationIdKey, nullptr);
// The accelerator keys used to close ShellSurfaces.
const struct {
ui::KeyboardCode keycode;
int modifiers;
} kCloseWindowAccelerators[] = {
{ui::VKEY_W, ui::EF_CONTROL_DOWN},
{ui::VKEY_W, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN},
{ui::VKEY_F4, ui::EF_ALT_DOWN}};
class ShellSurfaceWidget : public views::Widget {
public:
explicit ShellSurfaceWidget(ShellSurfaceBase* shell_surface)
: shell_surface_(shell_surface) {}
// Overridden from views::Widget:
void Close() override { shell_surface_->Close(); }
void OnKeyEvent(ui::KeyEvent* event) override {
// Handle only accelerators. Do not call Widget::OnKeyEvent that eats focus
// management keys (like the tab key) as well.
if (GetFocusManager()->ProcessAccelerator(ui::Accelerator(*event)))
event->SetHandled();
}
gfx::Size GetMinimumSize() const override {
return shell_surface_->GetMinimumSize();
}
private:
ShellSurfaceBase* const shell_surface_;
DISALLOW_COPY_AND_ASSIGN(ShellSurfaceWidget);
};
class CustomFrameView : public ash::CustomFrameViewAsh {
public:
using ShapeRects = std::vector<gfx::Rect>;
CustomFrameView(views::Widget* widget,
bool enabled,
bool client_controlled_move_resize)
: CustomFrameViewAsh(widget),
client_controlled_move_resize_(client_controlled_move_resize) {
SetEnabled(enabled);
if (!enabled)
CustomFrameViewAsh::SetShouldPaintHeader(false);
}
~CustomFrameView() override {}
// Overridden from ash::CustomFrameViewAshBase:
void SetShouldPaintHeader(bool paint) override {
if (enabled()) {
CustomFrameViewAsh::SetShouldPaintHeader(paint);
return;
}
aura::Window* window = GetWidget()->GetNativeWindow();
ui::Layer* layer = window->layer();
if (paint) {
if (layer->alpha_shape()) {
layer->SetAlphaShape(nullptr);
layer->SetMasksToBounds(false);
}
return;
}
int inset = window->GetProperty(aura::client::kTopViewInset);
if (inset <= 0)
return;
gfx::Rect bound(bounds().size());
bound.Inset(0, inset, 0, 0);
std::unique_ptr<ShapeRects> shape = std::make_unique<ShapeRects>();
shape->push_back(bound);
layer->SetAlphaShape(std::move(shape));
layer->SetMasksToBounds(true);
}
// Overridden from views::NonClientFrameView:
gfx::Rect GetBoundsForClientView() const override {
if (enabled())
return ash::CustomFrameViewAsh::GetBoundsForClientView();
return bounds();
}
gfx::Rect GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const override {
if (enabled()) {
return ash::CustomFrameViewAsh::GetWindowBoundsForClientBounds(
client_bounds);
}
return client_bounds;
}
int NonClientHitTest(const gfx::Point& point) override {
if (enabled() || !client_controlled_move_resize_)
return ash::CustomFrameViewAsh::NonClientHitTest(point);
return GetWidget()->client_view()->NonClientHitTest(point);
}
void GetWindowMask(const gfx::Size& size, gfx::Path* window_mask) override {
if (enabled())
return ash::CustomFrameViewAsh::GetWindowMask(size, window_mask);
}
void ResetWindowControls() override {
if (enabled())
return ash::CustomFrameViewAsh::ResetWindowControls();
}
void UpdateWindowIcon() override {
if (enabled())
return ash::CustomFrameViewAsh::ResetWindowControls();
}
void UpdateWindowTitle() override {
if (enabled())
return ash::CustomFrameViewAsh::UpdateWindowTitle();
}
void SizeConstraintsChanged() override {
if (enabled())
return ash::CustomFrameViewAsh::SizeConstraintsChanged();
}
gfx::Size GetMinimumSize() const override {
return static_cast<const ShellSurfaceWidget*>(GetWidget())
->GetMinimumSize();
}
private:
// TODO(oshima): Remove this once the transition to new drag/resize
// is complete. https://crbug.com/801666.
const bool client_controlled_move_resize_;
DISALLOW_COPY_AND_ASSIGN(CustomFrameView);
};
class CustomWindowTargeter : public aura::WindowTargeter {
public:
CustomWindowTargeter(views::Widget* widget,
bool client_controlled_move_resize)
: widget_(widget),
client_controlled_move_resize_(client_controlled_move_resize) {}
~CustomWindowTargeter() override {}
// Overridden from aura::WindowTargeter:
bool EventLocationInsideBounds(aura::Window* window,
const ui::LocatedEvent& event) const override {
gfx::Point local_point = event.location();
if (window->parent()) {
aura::Window::ConvertPointToTarget(window->parent(), window,
&local_point);
}
if (IsInResizeHandle(window, event, local_point))
return true;
Surface* surface = ShellSurfaceBase::GetMainSurface(window);
if (!surface)
return false;
int component = widget_->non_client_view()->NonClientHitTest(local_point);
if (component != HTNOWHERE && component != HTCLIENT &&
component != HTBORDER) {
return true;
}
aura::Window::ConvertPointToTarget(window, surface->window(), &local_point);
return surface->HitTest(local_point);
}
private:
bool IsInResizeHandle(aura::Window* window,
const ui::LocatedEvent& event,
const gfx::Point& local_point) const {
if (window != widget_->GetNativeWindow() ||
!widget_->widget_delegate()->CanResize()) {
return false;
}
// Use ash's resize handle detection logic if
// a) ClientControlledShellSurface uses server side resize or
// b) xdg shell is using the server side decoration.
if (ash::wm::GetWindowState(widget_->GetNativeWindow())
->allow_set_bounds_direct()
? client_controlled_move_resize_
: !widget_->non_client_view()->frame_view()->enabled()) {
return false;
}
ui::EventTarget* parent =
static_cast<ui::EventTarget*>(window)->GetParentTarget();
if (parent) {
aura::WindowTargeter* parent_targeter =
static_cast<aura::WindowTargeter*>(parent->GetEventTargeter());
if (parent_targeter) {
gfx::Rect mouse_rect;
gfx::Rect touch_rect;
if (parent_targeter->GetHitTestRects(window, &mouse_rect,
&touch_rect)) {
const gfx::Vector2d offset = -window->bounds().OffsetFromOrigin();
mouse_rect.Offset(offset);
touch_rect.Offset(offset);
if (event.IsTouchEvent() || event.IsGestureEvent()
? touch_rect.Contains(local_point)
: mouse_rect.Contains(local_point)) {
return true;
}
}
}
}
return false;
}
views::Widget* const widget_;
const bool client_controlled_move_resize_;
DISALLOW_COPY_AND_ASSIGN(CustomWindowTargeter);
};
// A place holder to disable default implementation created by
// ash::CustomFrameViewAsh, which triggers immersive fullscreen etc, which
// we don't need.
class CustomWindowStateDelegate : public ash::wm::WindowStateDelegate {
public:
CustomWindowStateDelegate() {}
~CustomWindowStateDelegate() override {}
// Overridden from ash::wm::WindowStateDelegate:
bool ToggleFullscreen(ash::wm::WindowState* window_state) override {
return false;
}
bool RestoreAlwaysOnTop(ash::wm::WindowState* window_state) override {
return false;
}
private:
DISALLOW_COPY_AND_ASSIGN(CustomWindowStateDelegate);
};
} // namespace
// Surface state associated with each configure request.
struct ShellSurfaceBase::Config {
Config(uint32_t serial,
const gfx::Vector2d& origin_offset,
int resize_component,
std::unique_ptr<ui::CompositorLock> compositor_lock);
~Config();
uint32_t serial;
gfx::Vector2d origin_offset;
int resize_component;
std::unique_ptr<ui::CompositorLock> compositor_lock;
};
////////////////////////////////////////////////////////////////////////////////
// ShellSurfaceBase, Config:
ShellSurfaceBase::Config::Config(
uint32_t serial,
const gfx::Vector2d& origin_offset,
int resize_component,
std::unique_ptr<ui::CompositorLock> compositor_lock)
: serial(serial),
origin_offset(origin_offset),
resize_component(resize_component),
compositor_lock(std::move(compositor_lock)) {}
ShellSurfaceBase::Config::~Config() {}
////////////////////////////////////////////////////////////////////////////////
// ShellSurfaceBase, ScopedConfigure:
ShellSurfaceBase::ScopedConfigure::ScopedConfigure(
ShellSurfaceBase* shell_surface,
bool force_configure)
: shell_surface_(shell_surface), force_configure_(force_configure) {
// ScopedConfigure instances cannot be nested.
DCHECK(!shell_surface_->scoped_configure_);
shell_surface_->scoped_configure_ = this;
}
ShellSurfaceBase::ScopedConfigure::~ScopedConfigure() {
DCHECK_EQ(shell_surface_->scoped_configure_, this);
shell_surface_->scoped_configure_ = nullptr;
if (needs_configure_ || force_configure_)
shell_surface_->Configure();
// ScopedConfigure instance might have suppressed a widget bounds update.
if (shell_surface_->widget_) {
shell_surface_->UpdateWidgetBounds();
shell_surface_->UpdateShadow();
}
}
////////////////////////////////////////////////////////////////////////////////
// ShellSurfaceBase, public:
ShellSurfaceBase::ShellSurfaceBase(Surface* surface,
const gfx::Point& origin,
bool activatable,
bool can_minimize,
int container)
: SurfaceTreeHost("ExoShellSurfaceHost"),
origin_(origin),
container_(container),
activatable_(activatable),
can_minimize_(can_minimize) {
WMHelper::GetInstance()->AddActivationObserver(this);
surface->AddSurfaceObserver(this);
SetRootSurface(surface);
host_window()->Show();
set_owned_by_client();
}
ShellSurfaceBase::~ShellSurfaceBase() {
DCHECK(!scoped_configure_);
if (resizer_)
EndDrag(false /* revert */);
// Remove activation observer before hiding widget to prevent it from
// casuing the configure callback to be called.
WMHelper::GetInstance()->RemoveActivationObserver(this);
if (widget_) {
widget_->GetNativeWindow()->RemoveObserver(this);
// Remove transient children so they are not automatically destroyed.
for (auto* child : wm::GetTransientChildren(widget_->GetNativeWindow()))
wm::RemoveTransientChild(widget_->GetNativeWindow(), child);
if (widget_->IsVisible())
widget_->Hide();
widget_->CloseNow();
}
if (parent_)
parent_->RemoveObserver(this);
if (root_surface())
root_surface()->RemoveSurfaceObserver(this);
}
void ShellSurfaceBase::AcknowledgeConfigure(uint32_t serial) {
TRACE_EVENT1("exo", "ShellSurfaceBase::AcknowledgeConfigure", "serial",
serial);
// Apply all configs that are older or equal to |serial|. The result is that
// the origin of the main surface will move and the resize direction will
// change to reflect the acknowledgement of configure request with |serial|
// at the next call to Commit().
while (!pending_configs_.empty()) {
std::unique_ptr<Config> config = std::move(pending_configs_.front());
pending_configs_.pop_front();
// Add the config offset to the accumulated offset that will be applied when
// Commit() is called.
pending_origin_offset_ += config->origin_offset;
// Set the resize direction that will be applied when Commit() is called.
pending_resize_component_ = config->resize_component;
if (config->serial == serial)
break;
}
if (widget_) {
UpdateWidgetBounds();
UpdateShadow();
}
}
void ShellSurfaceBase::Activate() {
TRACE_EVENT0("exo", "ShellSurfaceBase::Activate");
if (!widget_ || widget_->IsActive())
return;
widget_->Activate();
}
void ShellSurfaceBase::SetTitle(const base::string16& title) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetTitle", "title",
base::UTF16ToUTF8(title));
title_ = title;
if (widget_)
widget_->UpdateWindowTitle();
}
void ShellSurfaceBase::SetIcon(const gfx::ImageSkia& icon) {
TRACE_EVENT0("exo", "ShellSurfaceBase::SetIcon");
icon_ = icon;
if (widget_)
widget_->UpdateWindowIcon();
}
void ShellSurfaceBase::SetSystemModal(bool system_modal) {
// System modal container is used by clients to implement client side
// managed system modal dialogs using a single ShellSurface instance.
// Hit-test region will be non-empty when at least one dialog exists on
// the client side. Here we detect the transition between no client side
// dialog and at least one dialog so activatable state is properly
// updated.
if (container_ != ash::kShellWindowId_SystemModalContainer) {
LOG(ERROR)
<< "Only a window in SystemModalContainer can change the modality";
return;
}
if (system_modal == system_modal_)
return;
bool non_system_modal_window_was_active =
!system_modal_ && widget_ && widget_->IsActive();
system_modal_ = system_modal;
if (widget_) {
UpdateSystemModal();
// Deactivate to give the focus back to normal windows.
if (!system_modal_ && !non_system_modal_window_was_active_) {
widget_->Deactivate();
}
}
non_system_modal_window_was_active_ = non_system_modal_window_was_active;
}
void ShellSurfaceBase::Move() {
TRACE_EVENT0("exo", "ShellSurfaceBase::Move");
if (!widget_)
return;
AttemptToStartDrag(HTCAPTION);
}
void ShellSurfaceBase::UpdateSystemModal() {
DCHECK(widget_);
DCHECK_EQ(container_, ash::kShellWindowId_SystemModalContainer);
widget_->GetNativeWindow()->SetProperty(
aura::client::kModalKey,
system_modal_ ? ui::MODAL_TYPE_SYSTEM : ui::MODAL_TYPE_NONE);
}
// static
void ShellSurfaceBase::SetApplicationId(aura::Window* window,
const std::string& id) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetApplicationId", "application_id",
id);
window->SetProperty(kApplicationIdKey, new std::string(id));
}
// static
const std::string* ShellSurfaceBase::GetApplicationId(aura::Window* window) {
return window->GetProperty(kApplicationIdKey);
}
void ShellSurfaceBase::SetApplicationId(const std::string& application_id) {
// Store the value in |application_id_| in case the window does not exist yet.
application_id_ = application_id;
if (widget_ && widget_->GetNativeWindow())
SetApplicationId(widget_->GetNativeWindow(), application_id);
}
void ShellSurfaceBase::Close() {
if (!close_callback_.is_null())
close_callback_.Run();
}
void ShellSurfaceBase::SetGeometry(const gfx::Rect& geometry) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetGeometry", "geometry",
geometry.ToString());
if (geometry.IsEmpty()) {
DLOG(WARNING) << "Surface geometry must be non-empty";
return;
}
pending_geometry_ = geometry;
}
void ShellSurfaceBase::SetOrigin(const gfx::Point& origin) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetOrigin", "origin",
origin.ToString());
origin_ = origin;
}
void ShellSurfaceBase::SetActivatable(bool activatable) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetActivatable", "activatable",
activatable);
activatable_ = activatable;
}
void ShellSurfaceBase::SetContainer(int container) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetContainer", "container", container);
container_ = container;
}
void ShellSurfaceBase::SetMaximumSize(const gfx::Size& size) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetMaximumSize", "size",
size.ToString());
pending_maximum_size_ = size;
}
void ShellSurfaceBase::SetMinimumSize(const gfx::Size& size) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetMinimumSize", "size",
size.ToString());
pending_minimum_size_ = size;
}
void ShellSurfaceBase::SetCanMinimize(bool can_minimize) {
TRACE_EVENT1("exo", "ShellSurfaceBase::SetCanMinimize", "can_minimize",
can_minimize);
can_minimize_ = can_minimize;
}
void ShellSurfaceBase::DisableMovement() {
movement_disabled_ = true;
if (widget_)
widget_->set_movement_disabled(true);
}
// static
void ShellSurfaceBase::SetMainSurface(aura::Window* window, Surface* surface) {
window->SetProperty(kMainSurfaceKey, surface);
}
// static
Surface* ShellSurfaceBase::GetMainSurface(const aura::Window* window) {
return window->GetProperty(kMainSurfaceKey);
}
std::unique_ptr<base::trace_event::TracedValue>
ShellSurfaceBase::AsTracedValue() const {
std::unique_ptr<base::trace_event::TracedValue> value(
new base::trace_event::TracedValue());
value->SetString("title", base::UTF16ToUTF8(title_));
if (GetWidget() && GetWidget()->GetNativeWindow()) {
const std::string* application_id =
GetApplicationId(GetWidget()->GetNativeWindow());
if (application_id)
value->SetString("application_id", *application_id);
}
return value;
}
////////////////////////////////////////////////////////////////////////////////
// SurfaceDelegate overrides:
void ShellSurfaceBase::OnSurfaceCommit() {
// SetShadowBounds requires synchronizing shadow bounds with the next frame,
// so submit the next frame to a new surface and let the host window use the
// new surface.
if (shadow_bounds_changed_)
host_window()->AllocateLocalSurfaceId();
SurfaceTreeHost::OnSurfaceCommit();
if (enabled() && !widget_) {
// Defer widget creation until surface contains some contents.
if (host_window()->bounds().IsEmpty()) {
Configure();
return;
}
CreateShellSurfaceWidget(ui::SHOW_STATE_NORMAL);
}
// Apply the accumulated pending origin offset to reflect acknowledged
// configure requests.
origin_offset_ += pending_origin_offset_;
pending_origin_offset_ = gfx::Vector2d();
// Update resize direction to reflect acknowledged configure requests.
resize_component_ = pending_resize_component_;
// Apply new window geometry.
geometry_ = pending_geometry_;
// Apply new minimum/maximium size.
minimum_size_ = pending_minimum_size_;
maximum_size_ = pending_maximum_size_;
if (widget_) {
UpdateWidgetBounds();
UpdateShadow();
// System modal container is used by clients to implement overlay
// windows using a single ShellSurface instance. If hit-test
// region is empty, then it is non interactive window and won't be
// activated.
if (container_ == ash::kShellWindowId_SystemModalContainer) {
// Prevent window from being activated when hit test region is empty.
bool activatable = activatable_ && HasHitTestRegion();
if (activatable != CanActivate()) {
set_can_activate(activatable);
// Activate or deactivate window if activation state changed.
if (activatable) {
// Automatically activate only if the window is modal.
// Non modal window should be activated by a user action.
// TODO(oshima): Non modal system window does not have an associated
// task ID, and as a result, it cannot be activated from client side.
// Fix this (b/65460424) and remove this if condition.
if (system_modal_)
wm::ActivateWindow(widget_->GetNativeWindow());
} else if (widget_->IsActive()) {
wm::DeactivateWindow(widget_->GetNativeWindow());
}
}
}
UpdateSurfaceBounds();
// Show widget if needed.
if (pending_show_widget_) {
DCHECK(!widget_->IsClosed());
DCHECK(!widget_->IsVisible());
pending_show_widget_ = false;
widget_->Show();
if (container_ == ash::kShellWindowId_SystemModalContainer)
UpdateSystemModal();
}
}
SubmitCompositorFrame();
widget_->OnSizeConstraintsChanged();
}
bool ShellSurfaceBase::IsInputEnabled(Surface*) const {
return true;
}
void ShellSurfaceBase::OnSetFrame(SurfaceFrameType type) {
// TODO(reveman): Allow frame to change after surface has been enabled.
switch (type) {
case SurfaceFrameType::NONE:
frame_enabled_ = false;
shadow_bounds_.reset();
break;
case SurfaceFrameType::NORMAL:
frame_enabled_ = true;
shadow_bounds_ = gfx::Rect();
break;
case SurfaceFrameType::SHADOW:
frame_enabled_ = false;
shadow_bounds_ = gfx::Rect();
break;
}
}
void ShellSurfaceBase::OnSetFrameColors(SkColor active_color,
SkColor inactive_color) {
// TODO(reveman): Allow frame colors to change after surface has been enabled.
has_frame_colors_ = true;
active_frame_color_ = active_color;
inactive_frame_color_ = inactive_color;
}
void ShellSurfaceBase::OnSetParent(Surface* parent,
const gfx::Point& position) {
views::Widget* parent_widget =
parent ? views::Widget::GetTopLevelWidgetForNativeView(parent->window())
: nullptr;
if (parent_widget) {
// Set parent window if using default container and the container itself
// is not the parent.
if (container_ == ash::kShellWindowId_DefaultContainer)
SetParentWindow(parent_widget->GetNativeWindow());
if (resizer_)
return;
origin_ = position;
views::View::ConvertPointToScreen(
parent_widget->widget_delegate()->GetContentsView(), &origin_);
if (!widget_)
return;
gfx::Rect widget_bounds = widget_->GetWindowBoundsInScreen();
gfx::Rect new_widget_bounds(origin_, widget_bounds.size());
if (new_widget_bounds != widget_bounds) {
base::AutoReset<bool> auto_ignore_window_bounds_changes(
&ignore_window_bounds_changes_, true);
widget_->SetBounds(new_widget_bounds);
UpdateSurfaceBounds();
}
} else {
SetParentWindow(nullptr);
}
}
////////////////////////////////////////////////////////////////////////////////
// SurfaceObserver overrides:
void ShellSurfaceBase::OnSurfaceDestroying(Surface* surface) {
DCHECK_EQ(root_surface(), surface);
surface->RemoveSurfaceObserver(this);
SetRootSurface(nullptr);
if (resizer_)
EndDrag(false /* revert */);
if (widget_)
SetMainSurface(widget_->GetNativeWindow(), nullptr);
// Hide widget before surface is destroyed. This allows hide animations to
// run using the current surface contents.
if (widget_) {
// Remove transient children so they are not automatically hidden.
for (auto* child : wm::GetTransientChildren(widget_->GetNativeWindow()))
wm::RemoveTransientChild(widget_->GetNativeWindow(), child);
widget_->Hide();
}
// Note: In its use in the Wayland server implementation, the surface
// destroyed callback may destroy the ShellSurface instance. This call needs
// to be last so that the instance can be destroyed.
if (!surface_destroyed_callback_.is_null())
std::move(surface_destroyed_callback_).Run();
}
////////////////////////////////////////////////////////////////////////////////
// views::WidgetDelegate overrides:
bool ShellSurfaceBase::CanResize() const {
if (movement_disabled_)
return false;
// The shell surface is resizable by default when min/max size is empty,
// othersize it's resizable when min size != max size.
return minimum_size_.IsEmpty() || minimum_size_ != maximum_size_;
}
bool ShellSurfaceBase::CanMaximize() const {
// Shell surfaces in system modal container cannot be maximized.
if (container_ != ash::kShellWindowId_DefaultContainer)
return false;
// Non-transient shell surfaces can be maximized.
return !parent_;
}
bool ShellSurfaceBase::CanMinimize() const {
return can_minimize_;
}
base::string16 ShellSurfaceBase::GetWindowTitle() const {
return title_;
}
gfx::ImageSkia ShellSurfaceBase::GetWindowIcon() {
return icon_;
}
void ShellSurfaceBase::WindowClosing() {
if (resizer_)
EndDrag(true /* revert */);
SetEnabled(false);
widget_ = nullptr;
}
views::Widget* ShellSurfaceBase::GetWidget() {
return widget_;
}
const views::Widget* ShellSurfaceBase::GetWidget() const {
return widget_;
}
views::View* ShellSurfaceBase::GetContentsView() {
return this;
}
views::NonClientFrameView* ShellSurfaceBase::CreateNonClientFrameView(
views::Widget* widget) {
aura::Window* window = widget_->GetNativeWindow();
// ShellSurfaces always use immersive mode.
window->SetProperty(aura::client::kImmersiveFullscreenKey, true);
ash::wm::WindowState* window_state = ash::wm::GetWindowState(window);
if (!frame_enabled_ && !window_state->HasDelegate()) {
window_state->SetDelegate(std::make_unique<CustomWindowStateDelegate>());
}
CustomFrameView* frame_view = new CustomFrameView(
widget, frame_enabled_, client_controlled_move_resize_);
if (has_frame_colors_)
frame_view->SetFrameColors(active_frame_color_, inactive_frame_color_);
return frame_view;
}
bool ShellSurfaceBase::WidgetHasHitTestMask() const {
return true;
}
void ShellSurfaceBase::GetWidgetHitTestMask(gfx::Path* mask) const {
GetHitTestMask(mask);
gfx::Point origin = host_window()->bounds().origin();
SkMatrix matrix;
float scale = GetScale();
matrix.setScaleTranslate(
SkFloatToScalar(1.0f / scale), SkFloatToScalar(1.0f / scale),
SkIntToScalar(origin.x()), SkIntToScalar(origin.y()));
mask->transform(matrix);
}
////////////////////////////////////////////////////////////////////////////////
// views::Views overrides:
gfx::Size ShellSurfaceBase::CalculatePreferredSize() const {
if (!geometry_.IsEmpty())
return geometry_.size();
return host_window()->bounds().size();
}
gfx::Size ShellSurfaceBase::GetMinimumSize() const {
return minimum_size_.IsEmpty() ? gfx::Size(1, 1) : minimum_size_;
}
gfx::Size ShellSurfaceBase::GetMaximumSize() const {
// On ChromeOS, non empty maximum size will make the window
// non maximizable.
return maximum_size_;
}
////////////////////////////////////////////////////////////////////////////////
// aura::WindowObserver overrides:
void ShellSurfaceBase::OnWindowBoundsChanged(aura::Window* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds,
ui::PropertyChangeReason reason) {
if (!widget_ || !root_surface() || ignore_window_bounds_changes_)
return;
if (window == widget_->GetNativeWindow()) {
if (new_bounds.size() == old_bounds.size())
return;
// If size changed then give the client a chance to produce new contents
// before origin on screen is changed. Retain the old origin by reverting
// the origin delta until the next configure is acknowledged.
gfx::Vector2d delta = new_bounds.origin() - old_bounds.origin();
origin_offset_ -= delta;
pending_origin_offset_accumulator_ += delta;
UpdateSurfaceBounds();
// The shadow size may be updated to match the widget. Change it back
// to the shadow content size. Note that this relies on wm::ShadowController
// being notified of the change before |this|.
UpdateShadow();
Configure();
}
}
void ShellSurfaceBase::OnWindowDestroying(aura::Window* window) {
if (window == parent_) {
parent_ = nullptr;
// |parent_| being set to null effects the ability to maximize the window.
if (widget_)
widget_->OnSizeConstraintsChanged();
}
window->RemoveObserver(this);
}
////////////////////////////////////////////////////////////////////////////////
// wm::ActivationChangeObserver overrides:
void ShellSurfaceBase::OnWindowActivated(ActivationReason reason,
aura::Window* gained_active,
aura::Window* lost_active) {
if (!widget_)
return;
if (gained_active == widget_->GetNativeWindow() ||
lost_active == widget_->GetNativeWindow()) {
DCHECK(activatable_);
Configure();
UpdateShadow();
}
}
////////////////////////////////////////////////////////////////////////////////
// ui::EventHandler overrides:
void ShellSurfaceBase::OnKeyEvent(ui::KeyEvent* event) {
if (!resizer_) {
views::View::OnKeyEvent(event);
return;
}
if (event->type() == ui::ET_KEY_PRESSED &&
event->key_code() == ui::VKEY_ESCAPE) {
EndDrag(true /* revert */);
}
}
////////////////////////////////////////////////////////////////////////////////
// ui::EventHandler overrides:
void ShellSurfaceBase::OnMouseEvent(ui::MouseEvent* event) {
if (!resizer_) {
views::View::OnMouseEvent(event);
return;
}
if (event->handled())
return;
if ((event->flags() &
(ui::EF_MIDDLE_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON)) != 0)
return;
if (event->type() == ui::ET_MOUSE_CAPTURE_CHANGED) {
// We complete the drag instead of reverting it, as reverting it will
// result in a weird behavior when a client produces a modal dialog
// while the drag is in progress.
EndDrag(false /* revert */);
return;
}
switch (event->type()) {
case ui::ET_MOUSE_DRAGGED: {
if (OnMouseDragged(*event))
event->StopPropagation();
break;
}
case ui::ET_MOUSE_RELEASED: {
ScopedConfigure scoped_configure(this, false);
EndDrag(false /* revert */);
break;
}
case ui::ET_MOUSE_MOVED:
case ui::ET_MOUSE_PRESSED:
case ui::ET_MOUSE_ENTERED:
case ui::ET_MOUSE_EXITED:
case ui::ET_MOUSEWHEEL:
case ui::ET_MOUSE_CAPTURE_CHANGED:
break;
default:
NOTREACHED();