ladybird/Userland/Applications/DisplaySettings/MonitorWidget.h
Andrew January 1474a537b6 DisplaySettings: Lazily load wallpapers
Load the wallpaper in a background action instead of on the main thread.

This reduces the time to first paint, and makes the UI feel more
responsive when clicking on wallpaper thumbnails.

The behavior of the method is changed slightly to return true if it
succesfully "loads" the empty path. This makes the API a little more
consistent, where "true" means "I made changes" and "false" means "I did
not make changes". No call sites currently use the return value, so no
changes are needed to those.
2021-08-20 15:31:22 +02:00

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/*
* Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGUI/Widget.h>
namespace DisplaySettings {
class MonitorWidget final : public GUI::Widget {
C_OBJECT(MonitorWidget);
public:
bool set_wallpaper(String path);
String wallpaper();
void set_wallpaper_mode(String mode);
String wallpaper_mode();
void set_desktop_resolution(Gfx::IntSize resolution);
Gfx::IntSize desktop_resolution();
void set_desktop_scale_factor(int scale_factor) { m_desktop_scale_factor = scale_factor; }
int desktop_scale_factor() const { return m_desktop_scale_factor; }
void set_background_color(Gfx::Color background_color);
Gfx::Color background_color();
private:
MonitorWidget();
void redraw_desktop_if_needed();
virtual void paint_event(GUI::PaintEvent& event) override;
Gfx::IntRect m_monitor_rect;
RefPtr<Gfx::Bitmap> m_monitor_bitmap;
RefPtr<Gfx::Bitmap> m_desktop_bitmap;
bool m_desktop_dirty { true };
String m_desktop_wallpaper_path;
RefPtr<Gfx::Bitmap> m_wallpaper_bitmap;
String m_desktop_wallpaper_mode;
Gfx::IntSize m_desktop_resolution;
int m_desktop_scale_factor { 1 };
Gfx::Color m_desktop_color;
bool is_different_to_current_wallpaper_path(String const& path)
{
return (!path.is_empty() && path != m_desktop_wallpaper_path) || (path.is_empty() && m_desktop_wallpaper_path != nullptr);
}
};
}