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PaintBrush: Add an "ellipse tool"

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The tool currently supports drawing an elliptical line of a specified
thickness. Further improvements can include adding a fill mode, and
holding down shift to draw a perfect circle.

Closes #375.
This commit is contained in:
Shannon Booth 2019-12-27 11:24:13 +13:00 • committed by Andreas Kling
parent 123b5c9d34
commit c85bdff57a
5 changed files with 145 additions and 0 deletions
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36
Applications/PaintBrush/EllipseTool.h Normal file
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#pragma once
#include "Tool.h"
#include <LibDraw/Point.h>
class GMenu;
class Painter;
class EllipseTool final : public Tool {
public:
EllipseTool();
virtual ~EllipseTool() override;
virtual void on_mousedown(GMouseEvent&) override;
virtual void on_mousemove(GMouseEvent&) override;
virtual void on_mouseup(GMouseEvent&) override;
virtual void on_contextmenu(GContextMenuEvent&) override;
virtual void on_second_paint(GPaintEvent&) override;
virtual void on_keydown(GKeyEvent&) override;
private:
enum class Mode {
Outline,
// FIXME: Add Mode::Fill
};
virtual const char* class_name() const override { return "EllipseTool"; }
void draw_using(Painter& painter);
GMouseButton m_drawing_button { GMouseButton::None };
Point m_ellipse_start_position;
Point m_ellipse_end_position;
RefPtr<GMenu> m_context_menu;
int m_thickness { 1 };
Mode m_mode { Mode::Outline };
};