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PixelPaint: Make Layer passed to tools a pointer

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Some tools (e.g. ZoomTool) doesn't need layer to work. This commit
makes mouse events fire even if there is no layer. This fixes
a bug that ZoomTool didn't work when there is no layers.
This commit is contained in:
Maciej Zygmanowski 2021-08-25 10:07:24 +02:00 • committed by Andreas Kling
parent 0224dc2882
commit 3ad9df1522
28 changed files with 202 additions and 136 deletions
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20
Userland/Applications/PixelPaint/BrushTool.cpp
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@ -25,8 +25,11 @@ BrushTool::~BrushTool()
{
}
void BrushTool::on_mousedown(Layer& layer, MouseEvent& event)
void BrushTool::on_mousedown(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
auto& layer_event = event.layer_event();
if (layer_event.button() != GUI::MouseButton::Left && layer_event.button() != GUI::MouseButton::Right)
return;
@ -34,28 +37,31 @@ void BrushTool::on_mousedown(Layer& layer, MouseEvent& event)
const int first_draw_opacity = 10;
for (int i = 0; i < first_draw_opacity; ++i)
draw_point(layer.bitmap(), m_editor->color_for(layer_event), layer_event.position());
draw_point(layer->bitmap(), m_editor->color_for(layer_event), layer_event.position());
layer.did_modify_bitmap(Gfx::IntRect::centered_on(layer_event.position(), Gfx::IntSize { m_size * 2, m_size * 2 }));
layer->did_modify_bitmap(Gfx::IntRect::centered_on(layer_event.position(), Gfx::IntSize { m_size * 2, m_size * 2 }));
m_last_position = layer_event.position();
}
void BrushTool::on_mousemove(Layer& layer, MouseEvent& event)
void BrushTool::on_mousemove(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
auto& layer_event = event.layer_event();
if (!(layer_event.buttons() & GUI::MouseButton::Left || layer_event.buttons() & GUI::MouseButton::Right))
return;
draw_line(layer.bitmap(), m_editor->color_for(layer_event), m_last_position, layer_event.position());
draw_line(layer->bitmap(), m_editor->color_for(layer_event), m_last_position, layer_event.position());
auto modified_rect = Gfx::IntRect::from_two_points(m_last_position, layer_event.position()).inflated(m_size * 2, m_size * 2);
layer.did_modify_bitmap(modified_rect);
layer->did_modify_bitmap(modified_rect);
m_last_position = layer_event.position();
m_was_drawing = true;
}
void BrushTool::on_mouseup(Layer&, MouseEvent&)
void BrushTool::on_mouseup(Layer*, MouseEvent&)
{
if (m_was_drawing) {
m_editor->did_complete_action();