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https://github.com/RGBCube/serenity
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681ed93a41
This ensures that the gradient does not paint over the rulers at any zoom level, and also shows the guidelines/handles even when the gradient is clipped.
60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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* Copyright (c) 2023, Torsten Engelmann <engelTorsten@gmx.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "../ImageEditor.h"
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#include "Tool.h"
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namespace PixelPaint {
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class GradientTool : public Tool {
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public:
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GradientTool() = default;
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virtual ~GradientTool() override = default;
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virtual void on_mousedown(Layer*, MouseEvent&) override;
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virtual void on_mousemove(Layer*, MouseEvent&) override;
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virtual void on_mouseup(Layer*, MouseEvent&) override;
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virtual bool on_keydown(GUI::KeyEvent&) override;
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virtual void on_keyup(GUI::KeyEvent&) override;
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virtual void on_tool_activation() override;
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virtual GUI::Widget* get_properties_widget() override;
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virtual Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>> cursor() override;
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virtual void on_second_paint(Layer const*, GUI::PaintEvent&) override;
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protected:
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virtual StringView tool_name() const override { return "Gradient Tool"sv; }
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private:
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RefPtr<GUI::Widget> m_properties_widget;
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Optional<Gfx::IntPoint> m_gradient_start;
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Optional<Gfx::IntPoint> m_gradient_center;
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Optional<Gfx::IntPoint> m_gradient_end;
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Gfx::IntPoint m_perpendicular_point;
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float m_gradient_half_length = 0;
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float m_physical_diagonal_layer_length = 0;
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bool m_button_pressed = false;
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bool m_shift_pressed = false;
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bool m_hover_over_drag_handle = false;
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bool m_hover_over_start_handle = false;
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bool m_hover_over_end_handle = false;
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int m_opacity = 100;
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Gfx::FloatLine m_gradient_begin_line;
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Gfx::FloatLine m_gradient_center_line;
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Gfx::FloatLine m_gradient_end_line;
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void reset();
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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 = {});
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void rasterize_gradient();
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void calculate_gradient_lines();
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void update_gradient_end_and_derive_start(Gfx::IntPoint const);
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void translate_gradient_start_end(Gfx::IntPoint const delta, bool update_start_counterwise = true);
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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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};
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}
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