| // 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. |
| |
| #ifndef COMPONENTS_EXO_SHELL_SURFACE_H_ |
| #define COMPONENTS_EXO_SHELL_SURFACE_H_ |
| |
| #include "ash/wm/toplevel_window_event_handler.h" |
| #include "ash/wm/window_state_observer.h" |
| #include "base/containers/circular_deque.h" |
| #include "base/observer_list.h" |
| #include "components/exo/shell_surface_base.h" |
| #include "components/exo/shell_surface_observer.h" |
| #include "ui/base/ui_base_types.h" |
| |
| namespace ash { |
| class ScopedAnimationDisabler; |
| } // namespace ash |
| |
| namespace ui { |
| class CompositorLock; |
| } // namespace ui |
| |
| namespace exo { |
| class Surface; |
| |
| // This class implements toplevel surface for which position and state are |
| // managed by the shell. |
| class ShellSurface : public ShellSurfaceBase, public ash::WindowStateObserver { |
| public: |
| // The |origin| is the initial position in screen coordinates. The position |
| // specified as part of the geometry is relative to the shell surface. |
| ShellSurface(Surface* surface, |
| const gfx::Point& origin, |
| bool can_minimize, |
| int container); |
| explicit ShellSurface(Surface* surface); |
| |
| ShellSurface(const ShellSurface&) = delete; |
| ShellSurface& operator=(const ShellSurface&) = delete; |
| |
| ~ShellSurface() override; |
| |
| // Set the callback to run when the client is asked to configure the surface. |
| // The size is a hint, in the sense that the client is free to ignore it if |
| // it doesn't resize, pick a smaller size (to satisfy aspect ratio or resize |
| // in steps of NxM pixels). |
| using ConfigureCallback = |
| base::RepeatingCallback<uint32_t(const gfx::Rect& bounds, |
| chromeos::WindowStateType state_type, |
| bool resizing, |
| bool activated, |
| const gfx::Vector2d& origin_offset)>; |
| using OriginChangeCallback = |
| base::RepeatingCallback<void(const gfx::Point& origin)>; |
| |
| void set_configure_callback(const ConfigureCallback& configure_callback) { |
| configure_callback_ = configure_callback; |
| } |
| |
| void set_origin_change_callback( |
| const OriginChangeCallback& origin_change_callback) { |
| origin_change_callback_ = origin_change_callback; |
| } |
| |
| // When the client is asked to configure the surface, it should acknowledge |
| // the configure request sometime before the commit. |serial| is the serial |
| // from the configure callback. |
| void AcknowledgeConfigure(uint32_t serial); |
| |
| // Set the "parent" of this surface. This window should be stacked above a |
| // parent. |
| void SetParent(ShellSurface* parent); |
| |
| bool CanMaximize() const override; |
| |
| // Maximizes the shell surface. |
| void Maximize(); |
| |
| // Minimize the shell surface. |
| void Minimize(); |
| |
| // Restore the shell surface. |
| void Restore(); |
| |
| // Set fullscreen state for shell surface. |
| void SetFullscreen(bool fullscreen); |
| |
| // Make the shell surface popup type. |
| void SetPopup(); |
| |
| // Set event grab on the surface. |
| void Grab(); |
| |
| // Start an interactive resize of surface. |component| is one of the windows |
| // HT constants (see ui/base/hit_test.h) and describes in what direction the |
| // surface should be resized. |
| void StartResize(int component); |
| |
| // Start an interactive move of surface. |
| void StartMove(); |
| |
| // Return the initial show state for this surface. |
| ui::WindowShowState initial_show_state() { return initial_show_state_; } |
| |
| void AddObserver(ShellSurfaceObserver* observer); |
| void RemoveObserver(ShellSurfaceObserver* observer); |
| |
| // Overridden from SurfaceDelegate: |
| void OnSetFrame(SurfaceFrameType type) override; |
| void OnSetParent(Surface* parent, const gfx::Point& position) override; |
| |
| // Overridden from ShellSurfaceBase: |
| void InitializeWindowState(ash::WindowState* window_state) override; |
| absl::optional<gfx::Rect> GetWidgetBounds() const override; |
| gfx::Point GetSurfaceOrigin() const override; |
| |
| // Overridden from aura::WindowObserver: |
| void OnWindowBoundsChanged(aura::Window* window, |
| const gfx::Rect& old_bounds, |
| const gfx::Rect& new_bounds, |
| ui::PropertyChangeReason reason) override; |
| void OnWindowAddedToRootWindow(aura::Window* window) override; |
| |
| // Overridden from ash::WindowStateObserver: |
| void OnPreWindowStateTypeChange(ash::WindowState* window_state, |
| chromeos::WindowStateType old_type) override; |
| void OnPostWindowStateTypeChange(ash::WindowState* window_state, |
| chromeos::WindowStateType old_type) override; |
| |
| // Overridden from wm::ActivationChangeObserver: |
| void OnWindowActivated(ActivationReason reason, |
| aura::Window* gained_active, |
| aura::Window* lost_active) override; |
| |
| // Overridden from ShellSurfaceBase: |
| void SetWidgetBounds(const gfx::Rect& bounds) override; |
| bool OnPreWidgetCommit() override; |
| std::unique_ptr<views::NonClientFrameView> CreateNonClientFrameView( |
| views::Widget* widget) override; |
| |
| void EndDrag(); |
| |
| int resize_component_for_test() const { return resize_component_; } |
| |
| private: |
| struct Config; |
| |
| // Helper class used to coalesce a number of changes into one "configure" |
| // callback. Callbacks are suppressed while an instance of this class is |
| // instantiated and instead called when the instance is destroyed. |
| // If |force_configure_| is true ShellSurface::Configure() will be called |
| // even if no changes to shell surface took place during the lifetime of the |
| // ScopedConfigure instance. |
| class ScopedConfigure { |
| public: |
| ScopedConfigure(ShellSurface* shell_surface, bool force_configure); |
| |
| ScopedConfigure(const ScopedConfigure&) = delete; |
| ScopedConfigure& operator=(const ScopedConfigure&) = delete; |
| |
| ~ScopedConfigure(); |
| |
| void set_needs_configure() { needs_configure_ = true; } |
| |
| private: |
| ShellSurface* const shell_surface_; |
| const bool force_configure_; |
| bool needs_configure_ = false; |
| }; |
| |
| // Set the parent window of this surface. |
| void SetParentWindow(aura::Window* parent); |
| |
| // Sets up a transient window manager for this window if it can (i.e. if the |
| // surface has a widget with a parent). |
| void MaybeMakeTransient(); |
| |
| // Asks the client to configure its surface. Optionally, the user can override |
| // the behaviour to check for window dragging by setting ends_drag to true. |
| void Configure(bool ends_drag = false); |
| |
| bool GetCanResizeFromSizeConstraints() const override; |
| |
| void AttemptToStartDrag(int component); |
| |
| std::unique_ptr<ash::ScopedAnimationDisabler> animations_disabler_; |
| |
| std::unique_ptr<ui::CompositorLock> configure_compositor_lock_; |
| ConfigureCallback configure_callback_; |
| OriginChangeCallback origin_change_callback_; |
| ScopedConfigure* scoped_configure_ = nullptr; |
| base::circular_deque<std::unique_ptr<Config>> pending_configs_; |
| |
| // Window resizing is an asynchronous operation. See |
| // https://crbug.com/1336706#c22 for a more detailed explanation. |
| // |origin_offset_| is typically (0,0). During an asynchronous resizing |
| // |origin_offset_| is set to a non-zero value such that it appears as though |
| // the ExoShellSurfaceHost has not moved even though ExoShellSurface has |
| // already been moved and resized to the new position. |
| gfx::Vector2d origin_offset_; |
| gfx::Vector2d pending_origin_offset_; |
| gfx::Vector2d pending_origin_offset_accumulator_; |
| |
| int resize_component_ = HTCAPTION; // HT constant (see ui/base/hit_test.h) |
| int pending_resize_component_ = HTCAPTION; |
| ui::WindowShowState initial_show_state_ = ui::SHOW_STATE_DEFAULT; |
| bool ignore_window_bounds_changes_ = false; |
| bool window_state_is_changing_ = false; |
| |
| base::ObserverList<ShellSurfaceObserver> observers_; |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_SHELL_SURFACE_H_ |