PixelPaint: Rename from PaintBrush :^)

2025-07-25 17:27:35 +00:00 · 2020-05-20 20:35:35 +02:00 · 2020-05-20 20:35:35 +02:00 · 58fa9c6e89
commit 58fa9c6e89
parent ff4eaa12b4
41 changed files with 58 additions and 58 deletions
--- a/Applications/PixelPaint/LineTool.cpp
+++ b/Applications/PixelPaint/LineTool.cpp
@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "LineTool.h"
+#include "ImageEditor.h"
+#include "Layer.h"
+#include <LibGUI/Action.h>
+#include <LibGUI/Menu.h>
+#include <LibGUI/Painter.h>
+#include <LibM/math.h>
+
+namespace PixelPaint {
+
+static Gfx::Point constrain_line_angle(const Gfx::Point& start_pos, const Gfx::Point& end_pos, float angle_increment)
+{
+    float current_angle = atan2(end_pos.y() - start_pos.y(), end_pos.x() - start_pos.x()) + M_PI * 2.;
+
+    float constrained_angle = ((int)((current_angle + angle_increment / 2.) / angle_increment)) * angle_increment;
+
+    auto diff = end_pos - start_pos;
+    float line_length = sqrt(diff.x() * diff.x() + diff.y() * diff.y());
+
+    return { start_pos.x() + (int)(cos(constrained_angle) * line_length),
+        start_pos.y() + (int)(sin(constrained_angle) * line_length) };
+}
+
+LineTool::LineTool()
+{
+}
+
+LineTool::~LineTool()
+{
+}
+
+void LineTool::on_mousedown(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
+{
+    if (event.button() != GUI::MouseButton::Left && event.button() != GUI::MouseButton::Right)
+        return;
+
+    if (m_drawing_button != GUI::MouseButton::None)
+        return;
+
+    m_drawing_button = event.button();
+    m_line_start_position = event.position();
+    m_line_end_position = event.position();
+    m_editor->update();
+}
+
+void LineTool::on_mouseup(Layer& layer, GUI::MouseEvent& event, GUI::MouseEvent&)
+{
+    if (event.button() == m_drawing_button) {
+        GUI::Painter painter(layer.bitmap());
+        painter.draw_line(m_line_start_position, m_line_end_position, m_editor->color_for(m_drawing_button), m_thickness);
+        m_drawing_button = GUI::MouseButton::None;
+        m_editor->update();
+    }
+}
+
+void LineTool::on_mousemove(Layer&, GUI::MouseEvent& event, GUI::MouseEvent&)
+{
+    if (m_drawing_button == GUI::MouseButton::None)
+        return;
+
+    if (!m_constrain_angle) {
+        m_line_end_position = event.position();
+    } else {
+        const float ANGLE_STEP = M_PI / 8.0f;
+        m_line_end_position = constrain_line_angle(m_line_start_position, event.position(), ANGLE_STEP);
+    }
+    m_editor->update();
+}
+
+void LineTool::on_second_paint(const Layer& layer, GUI::PaintEvent& event)
+{
+    if (m_drawing_button == GUI::MouseButton::None)
+        return;
+
+    GUI::Painter painter(*m_editor);
+    painter.add_clip_rect(event.rect());
+    painter.translate(layer.location());
+    painter.draw_line(m_line_start_position, m_line_end_position, m_editor->color_for(m_drawing_button), m_thickness);
+}
+
+void LineTool::on_keydown(GUI::KeyEvent& event)
+{
+    if (event.key() == Key_Escape && m_drawing_button != GUI::MouseButton::None) {
+        m_drawing_button = GUI::MouseButton::None;
+        m_editor->update();
+        event.accept();
+    }
+
+    if (event.key() == Key_Shift) {
+        m_constrain_angle = true;
+        m_editor->update();
+        event.accept();
+    }
+}
+
+void LineTool::on_keyup(GUI::KeyEvent& event)
+{
+    if (event.key() == Key_Shift) {
+        m_constrain_angle = false;
+        m_editor->update();
+        event.accept();
+    }
+}
+
+void LineTool::on_tool_button_contextmenu(GUI::ContextMenuEvent& event)
+{
+    if (!m_context_menu) {
+        m_context_menu = GUI::Menu::construct();
+        m_thickness_actions.set_exclusive(true);
+        auto insert_action = [&](int size, bool checked = false) {
+            auto action = GUI::Action::create_checkable(String::number(size), [this, size](auto&) {
+                m_thickness = size;
+            });
+            action->set_checked(checked);
+            m_thickness_actions.add_action(*action);
+            m_context_menu->add_action(move(action));
+        };
+        insert_action(1, true);
+        insert_action(2);
+        insert_action(3);
+        insert_action(4);
+    }
+    m_context_menu->popup(event.screen_position());
+}
+
+}