mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 02:32:45 +00:00
401ea85655
This adds an option for even more magnification, when you really need to count pixels, as well as pausing the capture by pressing Space and switching between magnification levels with keys 2, 4 & 8.
49 lines
1.2 KiB
C++
49 lines
1.2 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::set_scale_factor(int scale_factor)
|
|
{
|
|
VERIFY(scale_factor == 2 || scale_factor == 4 || scale_factor == 8);
|
|
m_scale_factor = scale_factor;
|
|
update();
|
|
}
|
|
|
|
void MagnifierWidget::sync()
|
|
{
|
|
if (m_pause_capture)
|
|
return;
|
|
|
|
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());
|
|
}
|