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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/EventLoop.h>
#include <LibGUI/Desktop.h>
#include <LibGUI/Dialog.h>
#include <LibGUI/Event.h>
#include <LibGfx/Palette.h>
namespace GUI {
Dialog::Dialog(Window* parent_window, ScreenPosition screen_position)
: Window(parent_window)
, m_screen_position(screen_position)
{
set_window_mode(WindowMode::Blocking);
}
Dialog::ExecResult Dialog::exec()
{
VERIFY(!m_event_loop);
m_event_loop = make<Core::EventLoop>();
auto desktop_rect = Desktop::the().rect();
auto window_rect = rect();
auto top_align = [](Gfx::Rect<int>& rect) { rect.set_y(32); };
auto bottom_align = [this, desktop_rect](Gfx::Rect<int>& rect) { rect.set_y(desktop_rect.height() - Desktop::the().taskbar_height() - height() - 12); };
auto left_align = [](Gfx::Rect<int>& rect) { rect.set_x(12); };
auto right_align = [this, desktop_rect](Gfx::Rect<int>& rect) { rect.set_x(desktop_rect.width() - width() - 12); };
switch (m_screen_position) {
case ScreenPosition::CenterWithinParent:
if (parent() && is<Window>(parent())) {
auto& parent_window = *static_cast<Window*>(parent());
if (parent_window.is_visible()) {
// Check the dialog's position against the Desktop's rect and reposition it to be entirely visible.
// If the dialog is larger than the desktop's rect just center it.
window_rect.center_within(parent_window.rect());
if (window_rect.size().width() < desktop_rect.size().width() && window_rect.size().height() < desktop_rect.size().height()) {
auto taskbar_top_y = desktop_rect.bottom() - Desktop::the().taskbar_height();
auto palette = GUI::Application::the()->palette();
auto border_thickness = palette.window_border_thickness();
auto top_border_title_thickness = border_thickness + palette.window_title_height();
if (window_rect.top() < top_border_title_thickness) {
window_rect.set_y(top_border_title_thickness);
}
if (window_rect.right() + border_thickness > desktop_rect.right()) {
window_rect.translate_by((window_rect.right() + border_thickness - desktop_rect.right()) * -1, 0);
}
if (window_rect.bottom() + border_thickness > taskbar_top_y) {
window_rect.translate_by(0, (window_rect.bottom() + border_thickness - taskbar_top_y) * -1);
}
if (window_rect.left() - border_thickness < 0) {
window_rect.set_x(0 + border_thickness);
}
}
break;
}
}
[[fallthrough]]; // Fall back to `Center` if parent window is invalid or not visible
case ScreenPosition::Center:
window_rect.center_within(desktop_rect);
break;
case ScreenPosition::CenterLeft:
left_align(window_rect);
window_rect.center_vertically_within(desktop_rect);
break;
case ScreenPosition::CenterRight:
right_align(window_rect);
window_rect.center_vertically_within(desktop_rect);
break;
case ScreenPosition::TopLeft:
left_align(window_rect);
top_align(window_rect);
break;
case ScreenPosition::TopCenter:
window_rect.center_horizontally_within(desktop_rect);
top_align(window_rect);
break;
case ScreenPosition::TopRight:
right_align(window_rect);
top_align(window_rect);
break;
case ScreenPosition::BottomLeft:
left_align(window_rect);
bottom_align(window_rect);
break;
case ScreenPosition::BottomCenter:
window_rect.center_horizontally_within(desktop_rect);
bottom_align(window_rect);
break;
case ScreenPosition::BottomRight:
right_align(window_rect);
bottom_align(window_rect);
break;
}
set_rect(window_rect);
show();
auto result = m_event_loop->exec();
m_event_loop = nullptr;
dbgln("{}: Event loop returned with result {}", *this, result);
remove_from_parent();
return static_cast<ExecResult>(result);
}
void Dialog::done(ExecResult result)
{
if (!m_event_loop)
return;
m_result = result;
on_done(m_result);
dbgln("{}: Quit event loop with result {}", *this, to_underlying(result));
m_event_loop->quit(to_underlying(result));
}
void Dialog::event(Core::Event& event)
{
if (event.type() == Event::KeyDown) {
auto& key_event = static_cast<KeyEvent&>(event);
if (key_event.key() == KeyCode::Key_Escape) {
done(ExecResult::Cancel);
event.accept();
return;
}
}
Window::event(event);
}
void Dialog::close()
{
Window::close();
done(ExecResult::Cancel);
}
}
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