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/*
* Copyright (c) 2021, Valtteri Koskivuori <vkoskiv@gmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/CircularQueue.h>
#include <LibGUI/ColorFilterer.h>
#include <LibGUI/Frame.h>
#include <LibGfx/Filters/ColorBlindnessFilter.h>
class MagnifierWidget final
: public GUI::Frame
, public GUI::ColorFilterer {
C_OBJECT(MagnifierWidget);
public:
virtual ~MagnifierWidget() override = default;
void set_scale_factor(int scale_factor);
virtual void set_color_filter(OwnPtr<Gfx::ColorBlindnessFilter>) override;
void show_grid(bool);
Gfx::Color grid_color() { return m_grid_color; }
void set_grid_color(Gfx::Color);
void pause_capture(bool pause)
{
m_pause_capture = pause;
if (!pause)
m_frame_offset_from_head = 0;
}
void lock_location(bool);
void display_previous_frame();
void display_next_frame();
RefPtr<Gfx::Bitmap> current_bitmap() const { return m_grabbed_bitmap; };
virtual Optional<GUI::UISize> calculated_min_size() const override
{
return GUI::UISize { frame_thickness() * 2 + m_scale_factor, frame_thickness() * 2 + m_scale_factor };
}
private:
MagnifierWidget();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void second_paint_event(GUI::PaintEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
void sync();
int m_scale_factor { 2 };
OwnPtr<Gfx::ColorBlindnessFilter> m_color_filter;
RefPtr<Gfx::Bitmap> m_grabbed_bitmap;
CircularQueue<RefPtr<Gfx::Bitmap>, 512> m_grabbed_bitmaps {};
ssize_t m_frame_offset_from_head { 0 };
bool m_pause_capture { false };
bool m_currently_dragging { false };
Gfx::IntPoint m_last_drag_position {};
Optional<Gfx::IntPoint> m_locked_location {};
bool m_show_grid { false };
Gfx::Color m_grid_color { 255, 0, 255, 100 };
};
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