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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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23
Userland/Applications/PixelPaint/PenTool.cpp
View file

@ -24,20 +24,26 @@ PenTool::~PenTool()
{
}
void PenTool::on_mousedown(Layer& layer, MouseEvent& event)
void PenTool::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;
GUI::Painter painter(layer.bitmap());
GUI::Painter painter(layer->bitmap());
painter.draw_line(layer_event.position(), layer_event.position(), m_editor->color_for(layer_event), m_thickness);
layer.did_modify_bitmap(Gfx::IntRect::centered_on(layer_event.position(), Gfx::IntSize { m_thickness + 2, m_thickness + 2 }));
layer->did_modify_bitmap(Gfx::IntRect::centered_on(layer_event.position(), Gfx::IntSize { m_thickness + 2, m_thickness + 2 }));
m_last_drawing_event_position = layer_event.position();
}
void PenTool::on_mouseup(Layer&, MouseEvent& event)
void PenTool::on_mouseup(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) {
m_last_drawing_event_position = { -1, -1 };
@ -45,12 +51,15 @@ void PenTool::on_mouseup(Layer&, MouseEvent& event)
}
}
void PenTool::on_mousemove(Layer& layer, MouseEvent& event)
void PenTool::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;
GUI::Painter painter(layer.bitmap());
GUI::Painter painter(layer->bitmap());
Gfx::IntRect changed_rect;
if (m_last_drawing_event_position != Gfx::IntPoint(-1, -1)) {
@ -61,7 +70,7 @@ void PenTool::on_mousemove(Layer& layer, MouseEvent& event)
changed_rect = Gfx::IntRect::from_two_points(layer_event.position(), layer_event.position());
}
changed_rect.inflate(m_thickness + 2, m_thickness + 2);
layer.did_modify_bitmap(changed_rect);
layer->did_modify_bitmap(changed_rect);
m_last_drawing_event_position = layer_event.position();
}