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/*
* Copyright (c) 2023, Torsten Engelmann <engelTorsten@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "../ImageEditor.h"
#include "Tool.h"
namespace PixelPaint {
class GradientTool : public Tool {
public:
GradientTool() = default;
virtual ~GradientTool() override = default;
virtual void on_mousedown(Layer*, MouseEvent&) override;
virtual void on_mousemove(Layer*, MouseEvent&) override;
virtual void on_mouseup(Layer*, MouseEvent&) override;
virtual bool on_keydown(GUI::KeyEvent&) override;
virtual void on_keyup(GUI::KeyEvent&) override;
virtual void on_primary_color_change(Color) override;
virtual void on_secondary_color_change(Color) override;
virtual void on_tool_activation() override;
virtual ErrorOr<GUI::Widget*> get_properties_widget() override;
virtual Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>> cursor() override;
virtual void on_second_paint(Layer const*, GUI::PaintEvent&) override;
protected:
virtual StringView tool_name() const override { return "Gradient Tool"sv; }
private:
RefPtr<GUI::Widget> m_properties_widget;
Optional<Gfx::IntPoint> m_gradient_start;
Optional<Gfx::IntPoint> m_gradient_center;
Optional<Gfx::IntPoint> m_gradient_end;
Gfx::IntPoint m_perpendicular_point;
float m_gradient_half_length = 0;
float m_physical_diagonal_layer_length = 0;
bool m_button_pressed = false;
bool m_shift_pressed = false;
bool m_hover_over_drag_handle = false;
bool m_hover_over_start_handle = false;
bool m_hover_over_end_handle = false;
int m_opacity = 100;
bool m_use_secondary_color { false };
Gfx::FloatLine m_gradient_begin_line;
Gfx::FloatLine m_gradient_center_line;
Gfx::FloatLine m_gradient_end_line;
void reset();
void draw_gradient(GUI::Painter&, bool with_guidelines = false, const Gfx::FloatPoint drawing_offset = { 0.0f, 0.0f }, float scale = 1, Optional<Gfx::IntRect const&> gradient_clip = {});
void rasterize_gradient();
void calculate_gradient_lines();
void update_gradient_end_and_derive_start(Gfx::IntPoint const);
void translate_gradient_start_end(Gfx::IntPoint const delta, bool update_start_counterwise = true);
bool has_gradient_start_end() { return m_gradient_center.has_value() && m_gradient_end.has_value() && m_gradient_start.has_value(); }
};
}
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