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Magnifier: Add ability to drag the location when it is locked

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FrHun 2022-12-06 01:19:14 +01:00 committed by Sam Atkins
parent 9d3debcbbe
commit f413033a50
2 changed files with 32 additions and 0 deletions
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26
Userland/Applications/Magnifier/MagnifierWidget.cpp
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@ -156,3 +156,29 @@ void MagnifierWidget::second_paint_event(GUI::PaintEvent&)
m_color_filter->apply(*target, rect, *clone, rect);
}
void MagnifierWidget::mousemove_event(GUI::MouseEvent& event)
{
if (m_locked_location.has_value() && m_currently_dragging && !m_pause_capture) {
auto current_position = event.position();
auto difference = current_position - m_last_drag_position;
Gfx::IntPoint remainder = { difference.x() % m_scale_factor, difference.y() % m_scale_factor };
auto moved_by = difference / m_scale_factor;
m_locked_location = m_locked_location.value() - moved_by;
m_last_drag_position = current_position - remainder;
}
}
void MagnifierWidget::mousedown_event(GUI::MouseEvent& event)
{
if (event.button() == GUI::MouseButton::Primary && !m_pause_capture) {
m_currently_dragging = true;
m_last_drag_position = event.position();
}
}
void MagnifierWidget::mouseup_event(GUI::MouseEvent& event)
{
if (event.button() == GUI::MouseButton::Primary)
m_currently_dragging = false;
}

6
Userland/Applications/Magnifier/MagnifierWidget.h
View file

@ -47,6 +47,10 @@ private:
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 };
@ -55,6 +59,8 @@ private:
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 };