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/*
* Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MonitorWidget.h"
#include <LibGUI/Desktop.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Bitmap.h>
#include <LibThreading/BackgroundAction.h>
REGISTER_WIDGET(DisplaySettings, MonitorWidget)
namespace DisplaySettings {
ErrorOr<NonnullRefPtr<MonitorWidget>> MonitorWidget::try_create()
{
auto monitor_widget = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) MonitorWidget()));
monitor_widget->m_desktop_resolution = GUI::Desktop::the().rect().size();
monitor_widget->m_monitor_bitmap = TRY(Gfx::Bitmap::load_from_file("/res/graphics/monitor.png"sv));
monitor_widget->m_desktop_bitmap = TRY(Gfx::Bitmap::create(monitor_widget->m_monitor_bitmap->format(), { 280, 158 }));
monitor_widget->m_monitor_rect = { { 12, 13 }, monitor_widget->m_desktop_bitmap->size() };
monitor_widget->set_fixed_size(304, 201);
return monitor_widget;
}
bool MonitorWidget::set_wallpaper(String path)
{
if (!is_different_to_current_wallpaper_path(path))
return false;
(void)Threading::BackgroundAction<NonnullRefPtr<Gfx::Bitmap>>::construct(
[path](auto&) -> ErrorOr<NonnullRefPtr<Gfx::Bitmap>> {
if (path.is_empty())
return Error::from_errno(ENOENT);
return Gfx::Bitmap::load_from_file(path);
},
[this, path](NonnullRefPtr<Gfx::Bitmap> bitmap) -> ErrorOr<void> {
// If we've been requested to change while we were loading the bitmap, don't bother spending the cost to
// move and render the now stale bitmap.
if (is_different_to_current_wallpaper_path(path))
return {};
m_wallpaper_bitmap = move(bitmap);
m_desktop_dirty = true;
update();
return {};
},
[this, path](Error) -> void {
m_wallpaper_bitmap = nullptr;
});
if (path.is_empty())
m_desktop_wallpaper_path = OptionalNone();
else
m_desktop_wallpaper_path = path;
return true;
}
Optional<StringView> MonitorWidget::wallpaper() const
{
if (m_desktop_wallpaper_path.has_value())
return m_desktop_wallpaper_path->bytes_as_string_view();
return OptionalNone();
}
void MonitorWidget::set_wallpaper_mode(String mode)
{
if (m_desktop_wallpaper_mode == mode)
return;
m_desktop_wallpaper_mode = move(mode);
m_desktop_dirty = true;
update();
}
StringView MonitorWidget::wallpaper_mode() const
{
return m_desktop_wallpaper_mode;
}
void MonitorWidget::set_desktop_resolution(Gfx::IntSize resolution)
{
if (m_desktop_resolution == resolution)
return;
m_desktop_resolution = resolution;
m_desktop_dirty = true;
update();
}
Gfx::IntSize MonitorWidget::desktop_resolution()
{
return m_desktop_resolution;
}
void MonitorWidget::set_background_color(Gfx::Color color)
{
if (m_desktop_color == color)
return;
m_desktop_color = color;
m_desktop_dirty = true;
update();
}
Gfx::Color MonitorWidget::background_color()
{
return m_desktop_color;
}
void MonitorWidget::redraw_desktop_if_needed()
{
if (!m_desktop_dirty)
return;
m_desktop_dirty = false;
GUI::Painter painter(*m_desktop_bitmap);
painter.fill_rect(m_desktop_bitmap->rect(), m_desktop_color);
if (!m_wallpaper_bitmap)
return;
float sw = (float)m_desktop_bitmap->width() / (float)m_desktop_resolution.width();
float sh = (float)m_desktop_bitmap->height() / (float)m_desktop_resolution.height();
auto scaled_size = m_wallpaper_bitmap->size().to_type<float>().scaled_by(sw, sh).to_type<int>();
auto scaled_bitmap_or_error = m_wallpaper_bitmap->scaled(sw, sh);
if (scaled_bitmap_or_error.is_error()) {
GUI::MessageBox::show_error(window(), "There was an error updating the desktop preview"sv);
return;
}
auto scaled_bitmap = scaled_bitmap_or_error.release_value();
if (m_desktop_wallpaper_mode == "Center"sv) {
auto centered_rect = Gfx::IntRect({}, scaled_size).centered_within(m_desktop_bitmap->rect());
painter.blit(centered_rect.location(), *scaled_bitmap, scaled_bitmap->rect());
} else if (m_desktop_wallpaper_mode == "Tile"sv) {
painter.draw_tiled_bitmap(m_desktop_bitmap->rect(), *scaled_bitmap);
} else if (m_desktop_wallpaper_mode == "Stretch"sv) {
painter.draw_scaled_bitmap(m_desktop_bitmap->rect(), *m_wallpaper_bitmap, m_wallpaper_bitmap->rect(), 1.f, Gfx::Painter::ScalingMode::BilinearBlend);
} else {
VERIFY_NOT_REACHED();
}
}
void MonitorWidget::paint_event(GUI::PaintEvent& event)
{
redraw_desktop_if_needed();
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.blit({ 0, 0 }, *m_monitor_bitmap, m_monitor_bitmap->rect());
painter.blit(m_monitor_rect.location(), *m_desktop_bitmap, m_desktop_bitmap->rect());
}
}
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