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fe3b846ac8
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/EventLoop.h>
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#include <LibGUI/Desktop.h>
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#include <LibGUI/Dialog.h>
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#include <LibGUI/Event.h>
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namespace GUI {
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Dialog::Dialog(Window* parent_window, ScreenPosition screen_position)
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: Window(parent_window)
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, m_screen_position(screen_position)
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{
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set_modal(true);
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set_minimizable(false);
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}
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int Dialog::exec()
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{
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VERIFY(!m_event_loop);
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m_event_loop = make<Core::EventLoop>();
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auto desktop_rect = Desktop::the().rect();
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auto window_rect = rect();
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auto top_align = [](Gfx::Rect<int>& rect) { rect.set_y(32); };
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auto bottom_align = [this, desktop_rect](Gfx::Rect<int>& rect) { rect.set_y(desktop_rect.height() - Desktop::the().taskbar_height() - height() - 12); };
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auto left_align = [](Gfx::Rect<int>& rect) { rect.set_x(12); };
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auto right_align = [this, desktop_rect](Gfx::Rect<int>& rect) { rect.set_x(desktop_rect.width() - width() - 12); };
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switch (m_screen_position) {
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case CenterWithinParent:
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if (parent() && is<Window>(parent())) {
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auto& parent_window = *static_cast<Window*>(parent());
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if (parent_window.is_visible()) {
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window_rect.center_within(parent_window.rect());
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break;
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}
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}
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[[fallthrough]]; // Fall back to `Center` if parent window is invalid or not visible
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case Center:
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window_rect.center_within(desktop_rect);
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break;
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case CenterLeft:
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left_align(window_rect);
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window_rect.center_vertically_within(desktop_rect);
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break;
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case CenterRight:
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right_align(window_rect);
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window_rect.center_vertically_within(desktop_rect);
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break;
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case TopLeft:
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left_align(window_rect);
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top_align(window_rect);
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break;
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case TopCenter:
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window_rect.center_horizontally_within(desktop_rect);
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top_align(window_rect);
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break;
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case TopRight:
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right_align(window_rect);
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top_align(window_rect);
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break;
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case BottomLeft:
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left_align(window_rect);
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bottom_align(window_rect);
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break;
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case BottomCenter:
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window_rect.center_horizontally_within(desktop_rect);
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bottom_align(window_rect);
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break;
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case BottomRight:
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right_align(window_rect);
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bottom_align(window_rect);
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break;
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}
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set_rect(window_rect);
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show();
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auto result = m_event_loop->exec();
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m_event_loop = nullptr;
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dbgln("{}: Event loop returned with result {}", *this, result);
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remove_from_parent();
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return result;
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}
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void Dialog::done(int result)
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{
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if (!m_event_loop)
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return;
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m_result = result;
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dbgln("{}: Quit event loop with result {}", *this, result);
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m_event_loop->quit(result);
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}
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void Dialog::event(Core::Event& event)
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{
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if (event.type() == Event::KeyUp || event.type() == Event::KeyDown) {
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auto& key_event = static_cast<KeyEvent&>(event);
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if (key_event.key() == KeyCode::Key_Escape) {
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done(ExecCancel);
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event.accept();
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return;
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}
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}
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Window::event(event);
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}
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void Dialog::close()
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{
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Window::close();
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m_event_loop->quit(ExecCancel);
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}
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}
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