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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Jakob-Niklas See <git@nwex.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Window.h"
namespace WindowServer {
class Compositor;
class WindowStack {
public:
WindowStack(unsigned row, unsigned column);
~WindowStack() = default;
bool is_empty() const { return m_windows.is_empty(); }
void add(Window&);
void add_to_back(Window&);
void remove(Window&);
void move_to_front(Window&);
void move_always_on_top_windows_to_front();
enum class MoveAllWindowsTo {
Front,
Back
};
void move_all_windows(WindowStack&, Vector<Window*, 32>&, MoveAllWindowsTo);
enum class IncludeWindowFrame {
Yes,
No,
};
Window* window_at(Gfx::IntPoint const&, IncludeWindowFrame = IncludeWindowFrame::Yes) const;
Window* highlight_window() const;
template<typename Callback>
IterationDecision for_each_visible_window_of_type_from_front_to_back(WindowType, Callback, bool ignore_highlight = false);
template<typename Callback>
IterationDecision for_each_visible_window_of_type_from_back_to_front(WindowType, Callback, bool ignore_highlight = false);
template<typename Callback>
IterationDecision for_each_window_of_type_from_front_to_back(WindowType, Callback, bool ignore_highlight = false);
template<typename Callback>
void for_each_window(Callback);
template<typename Callback>
IterationDecision for_each_window_from_back_to_front(Callback);
Window::List& windows() { return m_windows; }
Window* active_window() { return m_active_window; }
Window const* active_window() const { return m_active_window; }
void set_active_window(Window*);
Window* active_input_window() { return m_active_input_window; }
Window const* active_input_window() const { return m_active_input_window; }
void set_active_input_window(Window* window) { m_active_input_window = window; }
Optional<HitTestResult> hit_test(Gfx::IntPoint const&) const;
unsigned row() const { return m_row; }
unsigned column() const { return m_column; }
void set_transition_offset(Badge<Compositor>, Gfx::IntPoint const& transition_offset) { m_transition_offset = transition_offset; }
Gfx::IntPoint const& transition_offset() const { return m_transition_offset; }
void set_stationary_window_stack(WindowStack& window_stack) { m_stationary_window_stack = &window_stack; }
WindowStack& stationary_window_stack()
{
VERIFY(m_stationary_window_stack);
return *m_stationary_window_stack;
}
void set_all_occluded(bool);
private:
WeakPtr<Window> m_active_window;
WeakPtr<Window> m_active_input_window;
Window::List m_windows;
unsigned m_row { 0 };
unsigned m_column { 0 };
Gfx::IntPoint m_transition_offset;
WindowStack* m_stationary_window_stack { nullptr };
};
template<typename Callback>
inline IterationDecision WindowStack::for_each_visible_window_of_type_from_back_to_front(WindowType type, Callback callback, bool ignore_highlight)
{
auto* highlight_window = this->highlight_window();
bool do_highlight_window_at_end = false;
for (auto& window : m_windows) {
if (!window.is_visible())
continue;
if (window.is_minimized())
continue;
if (window.type() != type)
continue;
if (!ignore_highlight && highlight_window == &window) {
do_highlight_window_at_end = true;
continue;
}
if (callback(window) == IterationDecision::Break)
return IterationDecision::Break;
}
if (do_highlight_window_at_end) {
if (callback(*highlight_window) == IterationDecision::Break)
return IterationDecision::Break;
}
return IterationDecision::Continue;
}
template<typename Callback>
inline IterationDecision WindowStack::for_each_visible_window_of_type_from_front_to_back(WindowType type, Callback callback, bool ignore_highlight)
{
auto* highlight_window = this->highlight_window();
if (!ignore_highlight && highlight_window && highlight_window->type() == type && highlight_window->is_visible() && !highlight_window->is_minimized()) {
if (callback(*highlight_window) == IterationDecision::Break)
return IterationDecision::Break;
}
auto reverse_iterator = m_windows.rbegin();
for (; reverse_iterator != m_windows.rend(); ++reverse_iterator) {
auto& window = *reverse_iterator;
if (!window.is_visible())
continue;
if (window.is_minimized())
continue;
if (window.type() != type)
continue;
if (!ignore_highlight && &window == highlight_window)
continue;
if (callback(window) == IterationDecision::Break)
return IterationDecision::Break;
}
return IterationDecision::Continue;
}
template<typename Callback>
inline void WindowStack::for_each_window(Callback callback)
{
auto reverse_iterator = m_windows.rbegin();
for (; reverse_iterator != m_windows.rend(); ++reverse_iterator) {
auto& window = *reverse_iterator;
if (callback(window) == IterationDecision::Break)
return;
}
}
template<typename Callback>
inline IterationDecision WindowStack::for_each_window_from_back_to_front(Callback callback)
{
for (auto& window : m_windows) {
IterationDecision decision = callback(window);
if (decision != IterationDecision::Break)
return decision;
}
return IterationDecision::Continue;
}
template<typename Callback>
inline IterationDecision WindowStack::for_each_window_of_type_from_front_to_back(WindowType type, Callback callback, bool ignore_highlight)
{
auto* highlight_window = this->highlight_window();
if (!ignore_highlight && highlight_window && highlight_window->type() == type && highlight_window->is_visible()) {
if (callback(*highlight_window) == IterationDecision::Break)
return IterationDecision::Break;
}
auto reverse_iterator = m_windows.rbegin();
for (; reverse_iterator != m_windows.rend(); ++reverse_iterator) {
auto& window = *reverse_iterator;
if (window.type() != type)
continue;
if (!ignore_highlight && &window == highlight_window)
continue;
if (callback(window) == IterationDecision::Break)
return IterationDecision::Break;
}
return IterationDecision::Continue;
}
}
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