mirror of
https://github.com/RGBCube/serenity
synced 2025-05-18 12:55:07 +00:00
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/*
|
|
* 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().async_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()
|
|
{
|
|
auto size = frame_inner_rect().size();
|
|
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& event)
|
|
{
|
|
GUI::Frame::paint_event(event);
|
|
|
|
GUI::Painter painter(*this);
|
|
|
|
if (m_grabbed_bitmap)
|
|
painter.draw_scaled_bitmap(frame_inner_rect(), *m_grabbed_bitmap, m_grabbed_bitmap->rect());
|
|
}
|