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https://github.com/RGBCube/serenity
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PixelPaint: Make PenTool inherit from BrushTool
Most of the logic implemented in PenTool was the same as BrushTool anyway, with the only difference being how the actual lines were drawn at the end. We now just override the `draw_line()` and `draw_point()` methods instead. We don't strictly need to override `draw_line()` here, but that would just result in repeated calls to `draw_point()`, which is wasteful. Also renamed "thickness"->"size" to have consistent terminology.
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160bd33874
2 changed files with 27 additions and 65 deletions
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@ -1,5 +1,6 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -18,61 +19,23 @@ namespace PixelPaint {
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PenTool::PenTool()
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{
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set_size(1);
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}
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PenTool::~PenTool()
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{
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}
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void PenTool::on_mousedown(Layer* layer, MouseEvent& event)
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void PenTool::draw_point(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& point)
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{
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if (!layer)
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return;
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auto& layer_event = event.layer_event();
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if (layer_event.button() != GUI::MouseButton::Left && layer_event.button() != GUI::MouseButton::Right)
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return;
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GUI::Painter painter(layer->bitmap());
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painter.draw_line(layer_event.position(), layer_event.position(), m_editor->color_for(layer_event), m_thickness);
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layer->did_modify_bitmap(Gfx::IntRect::centered_on(layer_event.position(), Gfx::IntSize { m_thickness + 2, m_thickness + 2 }));
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m_last_drawing_event_position = layer_event.position();
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GUI::Painter painter(bitmap);
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painter.draw_line(point, point, color, size());
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}
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void PenTool::on_mouseup(Layer* layer, MouseEvent& event)
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void PenTool::draw_line(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& start, Gfx::IntPoint const& end)
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{
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if (!layer)
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return;
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auto& layer_event = event.layer_event();
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if (layer_event.button() == GUI::MouseButton::Left || layer_event.button() == GUI::MouseButton::Right) {
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m_last_drawing_event_position = { -1, -1 };
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m_editor->did_complete_action();
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}
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}
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void PenTool::on_mousemove(Layer* layer, MouseEvent& event)
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{
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if (!layer)
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return;
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auto& layer_event = event.layer_event();
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if (!(layer_event.buttons() & GUI::MouseButton::Left || layer_event.buttons() & GUI::MouseButton::Right))
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return;
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GUI::Painter painter(layer->bitmap());
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Gfx::IntRect changed_rect;
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if (m_last_drawing_event_position != Gfx::IntPoint(-1, -1)) {
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painter.draw_line(m_last_drawing_event_position, layer_event.position(), m_editor->color_for(layer_event), m_thickness);
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changed_rect = Gfx::IntRect::from_two_points(m_last_drawing_event_position, layer_event.position());
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} else {
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painter.draw_line(layer_event.position(), layer_event.position(), m_editor->color_for(layer_event), m_thickness);
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changed_rect = Gfx::IntRect::from_two_points(layer_event.position(), layer_event.position());
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}
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changed_rect.inflate(m_thickness + 2, m_thickness + 2);
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layer->did_modify_bitmap(changed_rect);
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m_last_drawing_event_position = layer_event.position();
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GUI::Painter painter(bitmap);
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painter.draw_line(start, end, color, size());
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}
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GUI::Widget* PenTool::get_properties_widget()
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@ -81,22 +44,22 @@ GUI::Widget* PenTool::get_properties_widget()
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m_properties_widget = GUI::Widget::construct();
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m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
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auto& thickness_container = m_properties_widget->add<GUI::Widget>();
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thickness_container.set_fixed_height(20);
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thickness_container.set_layout<GUI::HorizontalBoxLayout>();
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auto& size_container = m_properties_widget->add<GUI::Widget>();
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size_container.set_fixed_height(20);
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size_container.set_layout<GUI::HorizontalBoxLayout>();
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auto& thickness_label = thickness_container.add<GUI::Label>("Thickness:");
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thickness_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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thickness_label.set_fixed_size(80, 20);
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auto& size_label = size_container.add<GUI::Label>("Thickness:");
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size_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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size_label.set_fixed_size(80, 20);
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auto& thickness_slider = thickness_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
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thickness_slider.set_range(1, 20);
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thickness_slider.set_value(m_thickness);
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auto& size_slider = size_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
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size_slider.set_range(1, 20);
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size_slider.set_value(size());
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thickness_slider.on_change = [&](int value) {
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m_thickness = value;
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size_slider.on_change = [&](int value) {
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set_size(value);
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};
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set_primary_slider(&thickness_slider);
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set_primary_slider(&size_slider);
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}
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return m_properties_widget.ptr();
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@ -1,32 +1,31 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
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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 "Tool.h"
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#include "BrushTool.h"
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#include <LibGUI/ActionGroup.h>
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#include <LibGfx/Point.h>
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namespace PixelPaint {
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class PenTool final : public Tool {
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class PenTool final : public BrushTool {
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public:
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PenTool();
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virtual ~PenTool() override;
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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 GUI::Widget* get_properties_widget() override;
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virtual Gfx::StandardCursor cursor() override { return Gfx::StandardCursor::Crosshair; }
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protected:
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virtual void draw_point(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& point) override;
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virtual void draw_line(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& start, Gfx::IntPoint const& end) override;
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private:
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Gfx::IntPoint m_last_drawing_event_position { -1, -1 };
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RefPtr<GUI::Widget> m_properties_widget;
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int m_thickness { 1 };
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};
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}
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