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PaintBrush: Factor out the pen tool into an actual PenTool class.

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Also add a Tool base class, and an empty BucketTool subclass which is the
next thing to implement.
This commit is contained in:
Andreas Kling 2019-06-14 18:51:57 +02:00
parent a12751695e
commit 56cbe15033
10 changed files with 185 additions and 33 deletions
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48
Applications/PaintBrush/PenTool.cpp Normal file
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#include "PenTool.h"
#include "PaintableWidget.h"
#include <LibGUI/GPainter.h>
PenTool::PenTool()
{
}
PenTool::~PenTool()
{
}
void PenTool::on_mousedown(PaintableWidget& paintable_widget, GMouseEvent& event)
{
if (event.button() != GMouseButton::Left && event.button() != GMouseButton::Right)
return;
GPainter painter(paintable_widget.bitmap());
painter.set_pixel(event.position(), paintable_widget.color_for(event));
paintable_widget.update({ event.position(), { 1, 1 } });
m_last_drawing_event_position = event.position();
}
void PenTool::on_mouseup(PaintableWidget&, GMouseEvent& event)
{
if (event.button() == GMouseButton::Left || event.button() == GMouseButton::Right)
m_last_drawing_event_position = { -1, -1 };
}
void PenTool::on_mousemove(PaintableWidget& paintable_widget, GMouseEvent& event)
{
if (!paintable_widget.rect().contains(event.position()))
return;
if (event.buttons() & GMouseButton::Left || event.buttons() & GMouseButton::Right) {
GPainter painter(paintable_widget.bitmap());
if (m_last_drawing_event_position != Point(-1, -1)) {
painter.draw_line(m_last_drawing_event_position, event.position(), paintable_widget.color_for(event));
paintable_widget.update();
} else {
painter.set_pixel(event.position(), paintable_widget.color_for(event));
paintable_widget.update({ event.position(), { 1, 1 } });
}
m_last_drawing_event_position = event.position();
}
}