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ladybird/Userland/Applications/PixelPaint/Tools/RectangleTool.cpp
Zaggy1024 7ce346e50e PixelPaint: Allow keydown events to bubble from ImageEditor 
Previously, all keydown KeyEvents were accepted, causing parent widgets
not to receive them. With the addition of shortcut handling to keydown,
shortcuts were not called when the ImageEditor was focused.
2022-11-14 16:08:11 +00:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
* Copyright (c) 2022, MacDue <macdue@dueutil.tech>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "RectangleTool.h"
#include "../ImageEditor.h"
#include "../Layer.h"
#include <LibGUI/Action.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/CheckBox.h>
#include <LibGUI/Label.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Painter.h>
#include <LibGUI/RadioButton.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/ValueSlider.h>
#include <LibGfx/AntiAliasingPainter.h>
#include <LibGfx/Rect.h>
namespace PixelPaint {
void RectangleTool::draw_using(GUI::Painter& painter, Gfx::IntPoint const& start_position, Gfx::IntPoint const& end_position, int thickness, int corner_radius)
{
Gfx::IntRect rect;
if (m_draw_mode == DrawMode::FromCenter) {
auto delta = end_position - start_position;
rect = Gfx::IntRect::from_two_points(start_position - delta, end_position);
} else {
rect = Gfx::IntRect::from_two_points(start_position, end_position);
}
switch (m_fill_mode) {
case FillMode::Fill:
painter.fill_rect(rect, m_editor->color_for(m_drawing_button));
break;
case FillMode::Outline:
painter.draw_rect_with_thickness(rect, m_editor->color_for(m_drawing_button), thickness);
break;
case FillMode::Gradient:
painter.fill_rect_with_gradient(rect, m_editor->primary_color(), m_editor->secondary_color());
break;
case FillMode::RoundedCorners: {
int min_dimension = corner_radius * 2;
if (rect.width() < min_dimension)
rect.set_width(min_dimension);
if (rect.height() < min_dimension)
rect.set_height(min_dimension);
if (m_antialias_enabled) {
Gfx::AntiAliasingPainter aa_painter { painter };
aa_painter.fill_rect_with_rounded_corners(rect, m_editor->color_for(m_drawing_button), corner_radius);
} else {
painter.fill_rect_with_rounded_corners(rect, m_editor->color_for(m_drawing_button), corner_radius);
}
break;
}
default:
VERIFY_NOT_REACHED();
}
}
void RectangleTool::on_mousedown(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
auto& layer_event = event.layer_event();
if (layer_event.button() != GUI::MouseButton::Primary && layer_event.button() != GUI::MouseButton::Secondary)
return;
if (m_drawing_button != GUI::MouseButton::None)
return;
m_drawing_button = layer_event.button();
m_rectangle_start_position = layer_event.position();
m_rectangle_end_position = layer_event.position();
m_editor->update();
}
void RectangleTool::on_mouseup(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
if (event.layer_event().button() == m_drawing_button) {
GUI::Painter painter(layer->get_scratch_edited_bitmap());
draw_using(painter, m_rectangle_start_position, m_rectangle_end_position, m_thickness, m_corner_radius);
m_drawing_button = GUI::MouseButton::None;
auto modified_rect = Gfx::IntRect::from_two_points(m_rectangle_start_position, m_rectangle_end_position).inflated(m_thickness * 2, m_thickness * 2);
layer->did_modify_bitmap(modified_rect);
m_editor->update();
m_editor->did_complete_action(tool_name());
}
}
void RectangleTool::on_mousemove(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
if (m_drawing_button == GUI::MouseButton::None)
return;
m_draw_mode = event.layer_event().alt() ? DrawMode::FromCenter : DrawMode::FromCorner;
if (event.layer_event().shift())
m_rectangle_end_position = m_rectangle_start_position.end_point_for_aspect_ratio(event.layer_event().position(), 1.0);
else if (m_aspect_ratio.has_value())
m_rectangle_end_position = m_rectangle_start_position.end_point_for_aspect_ratio(event.layer_event().position(), m_aspect_ratio.value());
else
m_rectangle_end_position = event.layer_event().position();
m_editor->update();
}
void RectangleTool::on_second_paint(Layer const* layer, GUI::PaintEvent& event)
{
if (!layer || m_drawing_button == GUI::MouseButton::None)
return;
GUI::Painter painter(*m_editor);
painter.add_clip_rect(event.rect());
painter.translate(editor_layer_location(*layer));
auto start_position = editor_stroke_position(m_rectangle_start_position, m_thickness);
auto end_position = editor_stroke_position(m_rectangle_end_position, m_thickness);
draw_using(painter, start_position, end_position, AK::max(m_thickness * m_editor->scale(), 1), m_corner_radius * m_editor->scale());
}
bool RectangleTool::on_keydown(GUI::KeyEvent const& event)
{
if (event.key() == Key_Escape && m_drawing_button != GUI::MouseButton::None) {
m_drawing_button = GUI::MouseButton::None;
m_editor->update();
return true;
}
return Tool::on_keydown(event);
}
GUI::Widget* RectangleTool::get_properties_widget()
{
if (!m_properties_widget) {
m_properties_widget = GUI::Widget::construct();
m_properties_widget->set_layout<GUI::VerticalBoxLayout>();
auto& thickness_or_radius_container = m_properties_widget->add<GUI::Widget>();
thickness_or_radius_container.set_fixed_height(20);
thickness_or_radius_container.set_layout<GUI::HorizontalBoxLayout>();
auto& thickness_or_radius_label = thickness_or_radius_container.add<GUI::Label>();
thickness_or_radius_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
thickness_or_radius_label.set_fixed_size(80, 20);
auto& thickness_or_radius_slider = thickness_or_radius_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
thickness_or_radius_slider.on_change = [&](int value) {
if (m_fill_mode == FillMode::RoundedCorners) {
m_corner_radius = value;
} else
m_thickness = value;
};
auto update_slider = [&] {
auto update_values = [&](auto label, int value, int range_min, int range_max = 10) {
thickness_or_radius_label.set_text(label);
thickness_or_radius_slider.set_range(range_min, range_max);
thickness_or_radius_slider.set_value(value);
};
if (m_fill_mode == FillMode::RoundedCorners)
update_values("Radius:", m_corner_radius, 0, 50);
else
update_values("Thickness:", m_thickness, 1);
};
update_slider();
set_primary_slider(&thickness_or_radius_slider);
auto& mode_container = m_properties_widget->add<GUI::Widget>();
mode_container.set_fixed_height(90);
mode_container.set_layout<GUI::HorizontalBoxLayout>();
auto& mode_label = mode_container.add<GUI::Label>("Mode:");
mode_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
mode_label.set_fixed_size(30, 20);
auto& mode_radio_container = mode_container.add<GUI::Widget>();
mode_radio_container.set_layout<GUI::VerticalBoxLayout>();
auto& outline_mode_radio = mode_radio_container.add<GUI::RadioButton>("Outline");
auto& fill_mode_radio = mode_radio_container.add<GUI::RadioButton>("Fill");
auto& gradient_mode_radio = mode_radio_container.add<GUI::RadioButton>("Gradient");
mode_radio_container.set_fixed_width(70);
auto& rounded_corners_mode_radio = mode_radio_container.add<GUI::RadioButton>("Rounded");
outline_mode_radio.on_checked = [&, update_slider](bool) {
m_fill_mode = FillMode::Outline;
update_slider();
};
fill_mode_radio.on_checked = [&, update_slider](bool) {
m_fill_mode = FillMode::Fill;
update_slider();
};
gradient_mode_radio.on_checked = [&, update_slider](bool) {
m_fill_mode = FillMode::Gradient;
update_slider();
};
rounded_corners_mode_radio.on_checked = [&, update_slider](bool) {
m_fill_mode = FillMode::RoundedCorners;
update_slider();
};
outline_mode_radio.set_checked(true);
auto& mode_extras_container = mode_container.add<GUI::Widget>();
mode_extras_container.set_layout<GUI::VerticalBoxLayout>();
auto& aa_enable_checkbox = mode_extras_container.add<GUI::CheckBox>("Anti-alias");
aa_enable_checkbox.on_checked = [&](bool checked) {
m_antialias_enabled = checked;
};
auto& aspect_container = mode_extras_container.add<GUI::Widget>();
aspect_container.set_layout<GUI::VerticalBoxLayout>();
aspect_container.set_fixed_width(75);
auto& aspect_label = aspect_container.add<GUI::Label>("Aspect Ratio:");
aspect_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
aspect_label.set_fixed_size(75, 20);
auto& aspect_fields_container = aspect_container.add<GUI::Widget>();
aspect_fields_container.set_fixed_width(75);
aspect_fields_container.set_layout<GUI::HorizontalBoxLayout>();
m_aspect_w_textbox = aspect_fields_container.add<GUI::TextBox>();
m_aspect_w_textbox->set_fixed_height(20);
m_aspect_w_textbox->set_fixed_width(25);
m_aspect_w_textbox->on_change = [&] {
auto x = m_aspect_w_textbox->text().to_int().value_or(0);
auto y = m_aspect_h_textbox->text().to_int().value_or(0);
if (x > 0 && y > 0) {
m_aspect_ratio = (float)x / (float)y;
} else {
m_aspect_ratio = {};
}
};
auto& multiply_label = aspect_fields_container.add<GUI::Label>("x");
multiply_label.set_text_alignment(Gfx::TextAlignment::Center);
multiply_label.set_fixed_size(10, 20);
m_aspect_h_textbox = aspect_fields_container.add<GUI::TextBox>();
m_aspect_h_textbox->set_fixed_height(20);
m_aspect_h_textbox->set_fixed_width(25);
m_aspect_h_textbox->on_change = [&] { m_aspect_w_textbox->on_change(); };
}
return m_properties_widget.ptr();
}
}
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