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PixelPaint: Scale lasso tool preview path on zoom level change

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The size of the preview shown by the lasso tool now scales with the
current zoom level.
This commit is contained in:
Tim Ledbetter 2023-01-11 22:41:59 +00:00 • committed by Andreas Kling
parent 1cf45ee930
commit b0fad409bf
2 changed files with 17 additions and 10 deletions
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25
Userland/Applications/PixelPaint/Tools/LassoSelectTool.cpp
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@ -37,8 +37,8 @@ void LassoSelectTool::on_mousedown(Layer* layer, MouseEvent& event)
m_most_recent_position = layer_event.position();
m_top_left = m_start_position;
m_bottom_right = m_start_position;
m_preview_path.clear();
m_preview_path.move_to(editor_stroke_position(m_most_recent_position, 1).to_type<float>());
m_preview_coords.clear();
m_preview_coords.append(m_most_recent_position);
m_selection_bitmap->set_pixel(m_most_recent_position, Gfx::Color::Black);
m_selecting = true;
@ -69,8 +69,7 @@ void LassoSelectTool::on_mousemove(Layer* layer, MouseEvent& event)
if (new_position.y() > m_bottom_right.y())
m_bottom_right.set_y(new_position.y());
auto preview_end = editor_stroke_position(new_position, 1);
m_preview_path.line_to(preview_end.to_type<float>());
m_preview_coords.append(new_position);
auto selection_painter = Gfx::Painter(*m_selection_bitmap);
selection_painter.draw_line(m_most_recent_position, new_position, Gfx::Color::Black);
@ -138,15 +137,23 @@ void LassoSelectTool::flood_lasso_selection(Gfx::Bitmap& lasso_bitmap, Gfx::IntP
void LassoSelectTool::on_second_paint(Layer const* layer, GUI::PaintEvent& event)
{
if (!m_selecting)
if (!m_selecting || m_preview_coords.size() < 2)
return;
GUI::Painter painter(*m_editor);
painter.add_clip_rect(event.rect());
if (layer)
painter.translate(editor_layer_location(*layer));
// FIXME: Find a way to draw this in a single call
painter.stroke_path(m_preview_path, Gfx::Color::Black, 3);
painter.stroke_path(m_preview_path, Gfx::Color::White, 1);
auto draw_preview_lines = [&](auto color, auto thickness) {
for (size_t i = 0; i < m_preview_coords.size() - 1; i++) {
auto preview_start = editor_stroke_position(m_preview_coords.at(i), 1);
auto preview_end = editor_stroke_position(m_preview_coords.at(i + 1), 1);
painter.draw_line(preview_start, preview_end, color, thickness);
}
};
draw_preview_lines(Gfx::Color::Black, 3);
draw_preview_lines(Gfx::Color::White, 1);
}
bool LassoSelectTool::on_keydown(GUI::KeyEvent& key_event)
@ -156,7 +163,7 @@ bool LassoSelectTool::on_keydown(GUI::KeyEvent& key_event)
if (m_selecting) {
m_selecting = false;
m_selection_bitmap.clear();
m_preview_path.clear();
m_preview_coords.clear();
return true;
}
}