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https://github.com/RGBCube/serenity
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PixelPaint: Add option for antialiased lines
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parent
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commit
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2 changed files with 34 additions and 2 deletions
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@ -1,6 +1,7 @@
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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@serenityos.org>
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* Copyright (c) 2022, MacDue <macdue@dueutil.tech>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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@ -12,10 +13,12 @@
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#include <AK/Math.h>
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#include <LibGUI/Action.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/CheckBox.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/Menu.h>
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#include <LibGUI/Painter.h>
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#include <LibGUI/ValueSlider.h>
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#include <LibGfx/AntiAliasingPainter.h>
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namespace PixelPaint {
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@ -53,6 +56,19 @@ void LineTool::on_mousedown(Layer* layer, MouseEvent& event)
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m_editor->update();
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}
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void LineTool::draw_using(GUI::Painter& painter, Gfx::IntPoint const& start_position, Gfx::IntPoint const& end_position, Color color, int thickness)
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{
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if (m_antialias_enabled) {
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Gfx::AntiAliasingPainter aa_painter { painter };
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auto as_float_point = [](auto const& point) {
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return Gfx::FloatPoint { point.x(), point.y() };
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};
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aa_painter.draw_line(as_float_point(start_position), as_float_point(end_position), color, thickness);
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} else {
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painter.draw_line(start_position, end_position, color, thickness);
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}
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}
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void LineTool::on_mouseup(Layer* layer, MouseEvent& event)
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{
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if (!layer)
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@ -61,7 +77,7 @@ void LineTool::on_mouseup(Layer* layer, MouseEvent& event)
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auto& layer_event = event.layer_event();
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if (layer_event.button() == m_drawing_button) {
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GUI::Painter painter(layer->currently_edited_bitmap());
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painter.draw_line(m_line_start_position, m_line_end_position, m_editor->color_for(m_drawing_button), m_thickness);
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draw_using(painter, m_line_start_position, m_line_end_position, m_editor->color_for(m_drawing_button), m_thickness);
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m_drawing_button = GUI::MouseButton::None;
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layer->did_modify_bitmap();
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m_editor->update();
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@ -103,7 +119,7 @@ void LineTool::on_second_paint(Layer const* layer, GUI::PaintEvent& event)
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painter.add_clip_rect(event.rect());
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auto preview_start = editor_stroke_position(m_line_start_position, m_thickness);
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auto preview_end = editor_stroke_position(m_line_end_position, m_thickness);
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painter.draw_line(preview_start, preview_end, m_editor->color_for(m_drawing_button), AK::max(m_thickness * m_editor->scale(), 1));
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draw_using(painter, preview_start, preview_end, m_editor->color_for(m_drawing_button), AK::max(m_thickness * m_editor->scale(), 1));
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}
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void LineTool::on_keydown(GUI::KeyEvent& event)
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@ -138,6 +154,19 @@ GUI::Widget* LineTool::get_properties_widget()
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m_thickness = value;
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};
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set_primary_slider(&thickness_slider);
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auto& mode_container = m_properties_widget->add<GUI::Widget>();
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mode_container.set_fixed_height(20);
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mode_container.set_layout<GUI::HorizontalBoxLayout>();
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auto& mode_label = mode_container.add<GUI::Label>("Mode:");
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mode_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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mode_label.set_fixed_size(80, 20);
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auto& aa_enable_checkbox = mode_container.add<GUI::CheckBox>("Anti-alias");
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aa_enable_checkbox.on_checked = [&](bool checked) {
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m_antialias_enabled = checked;
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};
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}
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return m_properties_widget.ptr();
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@ -26,6 +26,8 @@ public:
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virtual GUI::Widget* get_properties_widget() override;
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virtual Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>> cursor() override { return Gfx::StandardCursor::Crosshair; }
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void draw_using(GUI::Painter&, Gfx::IntPoint const& start_position, Gfx::IntPoint const& end_position, Color color, int thickness);
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private:
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RefPtr<GUI::Widget> m_properties_widget;
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@ -34,6 +36,7 @@ private:
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Gfx::IntPoint m_line_start_position;
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Gfx::IntPoint m_line_end_position;
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int m_thickness { 1 };
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bool m_antialias_enabled { false };
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};
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}
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