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PaintBrush: Add a "rectangle tool"

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Fill, line, and gradient modes initially supported :^)
This commit is contained in:
Shannon Booth 2019-12-27 08:43:59 +13:00 • committed by Andreas Kling
parent 70a2355963
commit b830639912
6 changed files with 145 additions and 1 deletions
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105
Applications/PaintBrush/RectangleTool.cpp Normal file
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#include "RectangleTool.h"
#include "PaintableWidget.h"
#include <LibDraw/Rect.h>
#include <LibGUI/GAction.h>
#include <LibGUI/GMenu.h>
#include <LibGUI/GPainter.h>
#include <LibM/math.h>
RectangleTool::RectangleTool()
{
}
RectangleTool::~RectangleTool()
{
}
void RectangleTool::draw_using(Painter& painter)
{
auto rect_to_draw = Rect::from_two_points(m_rectangle_start_position, m_rectangle_end_position);
switch (m_mode) {
case Mode::Fill:
painter.fill_rect(rect_to_draw, m_widget->color_for(m_drawing_button));
break;
case Mode::Outline:
painter.draw_rect(rect_to_draw, m_widget->color_for(m_drawing_button));
break;
case Mode::Gradient:
painter.fill_rect_with_gradient(rect_to_draw, m_widget->primary_color(), m_widget->secondary_color());
break;
default:
ASSERT_NOT_REACHED();
}
}
void RectangleTool::on_mousedown(GMouseEvent& event)
{
if (event.button() != GMouseButton::Left && event.button() != GMouseButton::Right)
return;
if (m_drawing_button != GMouseButton::None)
return;
m_drawing_button = event.button();
m_rectangle_start_position = event.position();
m_rectangle_end_position = event.position();
m_widget->update();
}
void RectangleTool::on_mouseup(GMouseEvent& event)
{
if (event.button() == m_drawing_button) {
GPainter painter(m_widget->bitmap());
draw_using(painter);
m_drawing_button = GMouseButton::None;
m_widget->update();
}
}
void RectangleTool::on_mousemove(GMouseEvent& event)
{
if (m_drawing_button == GMouseButton::None)
return;
if (!m_widget->rect().contains(event.position()))
return;
m_rectangle_end_position = event.position();
m_widget->update();
}
void RectangleTool::on_second_paint(GPaintEvent& event)
{
if (m_drawing_button == GMouseButton::None)
return;
GPainter painter(*m_widget);
painter.add_clip_rect(event.rect());
draw_using(painter);
}
void RectangleTool::on_keydown(GKeyEvent& event)
{
if (event.key() == Key_Escape && m_drawing_button != GMouseButton::None) {
m_drawing_button = GMouseButton::None;
m_widget->update();
event.accept();
}
}
void RectangleTool::on_contextmenu(GContextMenuEvent& event)
{
if (!m_context_menu) {
m_context_menu = GMenu::construct();
m_context_menu->add_action(GAction::create("Fill", [this](auto&) {
m_mode = Mode::Fill;
}));
m_context_menu->add_action(GAction::create("Outline", [this](auto&) {
m_mode = Mode::Outline;
}));
m_context_menu->add_action(GAction::create("Gradient", [this](auto&) {
m_mode = Mode::Gradient;
}));
}
m_context_menu->popup(event.screen_position());
}