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https://github.com/RGBCube/serenity
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f88361fc28
This performs a hit test on the window stack to find the window under a given cursor position.
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "WindowStack.h"
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namespace WindowServer {
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WindowStack::WindowStack()
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{
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}
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WindowStack::~WindowStack()
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{
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}
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void WindowStack::add(Window& window)
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{
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VERIFY(window.outer_stack() == nullptr);
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m_windows.append(window);
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window.set_outer_stack({}, this);
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}
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void WindowStack::remove(Window& window)
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{
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VERIFY(window.outer_stack() == this);
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m_windows.remove(window);
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window.set_outer_stack({}, nullptr);
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}
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void WindowStack::move_to_front(Window& window)
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{
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if (m_windows.last() != &window)
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window.invalidate();
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m_windows.remove(window);
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m_windows.append(window);
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}
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Window* WindowStack::window_at(Gfx::IntPoint const& position) const
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{
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auto result = hit_test(position);
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if (!result.has_value())
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return nullptr;
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return result->window;
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}
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void WindowStack::set_highlight_window(Window* window)
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{
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if (!window)
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m_highlight_window = nullptr;
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else
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m_highlight_window = window->make_weak_ptr<Window>();
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}
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void WindowStack::set_active_window(Window* window)
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{
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if (!window)
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m_active_window = nullptr;
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else
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m_active_window = window->make_weak_ptr<Window>();
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}
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Optional<HitTestResult> WindowStack::hit_test(Gfx::IntPoint const& position) const
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{
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Optional<HitTestResult> result;
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const_cast<WindowStack*>(this)->for_each_visible_window_from_front_to_back([&](Window& window) {
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result = window.hit_test(position);
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if (result.has_value())
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return IterationDecision::Break;
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return IterationDecision::Continue;
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});
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return result;
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}
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}
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