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/*
* Copyright (c) 2021, Valtteri Koskivuori <vkoskiv@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MagnifierWidget.h"
#include <LibGUI/DisplayLink.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Window.h>
#include <LibGUI/WindowServerConnection.h>
#include <LibGfx/Rect.h>
MagnifierWidget::MagnifierWidget()
{
GUI::DisplayLink::register_callback([this](auto) { sync(); });
}
MagnifierWidget::~MagnifierWidget()
{
}
void MagnifierWidget::track_cursor_globally()
{
VERIFY(window());
auto window_id = window()->window_id();
VERIFY(window_id >= 0);
set_global_cursor_tracking(true);
GUI::WindowServerConnection::the().set_global_cursor_tracking(window_id, true);
}
void MagnifierWidget::set_scale_factor(int scale_factor)
{
VERIFY(scale_factor == 2 || scale_factor == 4);
m_scale_factor = scale_factor;
update();
}
void MagnifierWidget::sync()
{
Gfx::IntSize grab_size { size().width() / m_scale_factor, size().height() / m_scale_factor };
m_grabbed_bitmap = GUI::WindowServerConnection::the().get_screen_bitmap_around_cursor(grab_size).bitmap();
update();
}
void MagnifierWidget::paint_event(GUI::PaintEvent&)
{
GUI::Painter painter(*this);
if (m_grabbed_bitmap)
painter.draw_scaled_bitmap(rect(), *m_grabbed_bitmap, m_grabbed_bitmap->rect());
}
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