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Magnifier: Add option to display grid over the image
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parent
df30440117
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2b635b5330
3 changed files with 45 additions and 1 deletions
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@ -32,6 +32,14 @@ void MagnifierWidget::lock_location(bool lock)
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m_locked_location = {};
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}
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void MagnifierWidget::show_grid(bool new_value)
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{
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if (m_show_grid == new_value)
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return;
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m_show_grid = new_value;
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update();
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}
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void MagnifierWidget::set_color_filter(OwnPtr<Gfx::ColorBlindnessFilter> color_filter)
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{
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m_color_filter = move(color_filter);
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@ -75,10 +83,37 @@ void MagnifierWidget::paint_event(GUI::PaintEvent& event)
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{
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GUI::Frame::paint_event(event);
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if (!m_grabbed_bitmap)
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return;
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GUI::Painter painter(*this);
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if (m_grabbed_bitmap)
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painter.draw_scaled_bitmap(frame_inner_rect(), *m_grabbed_bitmap, m_grabbed_bitmap->rect());
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painter.draw_scaled_bitmap(frame_inner_rect(), *m_grabbed_bitmap, m_grabbed_bitmap->rect(), 1.0, Gfx::Painter::ScalingMode::NearestFractional);
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if (m_show_grid) {
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auto line_color = Color(Color::NamedColor::Magenta);
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line_color.set_alpha(100);
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auto grid_rect = frame_inner_rect();
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if (m_grabbed_bitmap)
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grid_rect = frame_inner_rect().intersected({ 0,
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0,
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m_grabbed_bitmap->rect().width() * m_scale_factor,
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m_grabbed_bitmap->rect().height() * m_scale_factor });
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int start_y = grid_rect.top(),
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start_x = grid_rect.left();
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int end_y = grid_rect.bottom(),
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end_x = grid_rect.right();
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for (int current_y = start_y; current_y <= end_y; current_y += m_scale_factor)
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painter.draw_line({ start_x, current_y }, { end_x, current_y }, line_color);
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for (int current_x = start_y; current_x <= end_x; current_x += m_scale_factor)
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painter.draw_line({ current_x, start_y }, { current_x, end_y }, line_color);
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}
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}
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void MagnifierWidget::second_paint_event(GUI::PaintEvent&)
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