/*
* 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 "CursorTool.h"
#include "FormEditorWidget.h"
#include "FormWidget.h"
#include "WidgetTreeModel.h"
#include <AK/Debug.h>
#include <LibGfx/Palette.h>
namespace HackStudio {
void CursorTool::on_mousedown(GUI::MouseEvent& event)
{
#if CURSOR_TOOL_DEBUG
dbgln("CursorTool::on_mousedown");
#endif
auto& form_widget = m_editor.form_widget();
auto result = form_widget.hit_test(event.position(), GUI::Widget::ShouldRespectGreediness::No);
if (event.button() == GUI::MouseButton::Left) {
if (result.widget && result.widget != &form_widget) {
if (event.modifiers() & Mod_Ctrl) {
m_editor.selection().toggle(*result.widget);
} else if (!event.modifiers()) {
if (!m_editor.selection().contains(*result.widget)) {
dbgln_if(CURSOR_TOOL_DEBUG, "Selection didn't contain {}, making it the only selected one", *result.widget);
m_editor.selection().set(*result.widget);
}
m_drag_origin = event.position();
m_positions_before_drag.clear();
m_editor.selection().for_each([&](auto& widget) {
m_positions_before_drag.set(&widget, widget.relative_position());
return IterationDecision::Continue;
});
}
} else {
m_editor.selection().clear();
m_rubber_banding = true;
m_rubber_band_origin = event.position();
m_rubber_band_position = event.position();
form_widget.update();
}
// FIXME: Do we need to update any part of the FormEditorWidget outside the FormWidget?
form_widget.update();
}
}
void CursorTool::on_mouseup(GUI::MouseEvent& event)
{
#if CURSOR_TOOL_DEBUG
dbgln("CursorTool::on_mouseup");
#endif
if (event.button() == GUI::MouseButton::Left) {
auto& form_widget = m_editor.form_widget();
auto result = form_widget.hit_test(event.position(), GUI::Widget::ShouldRespectGreediness::No);
if (!m_dragging && !(event.modifiers() & Mod_Ctrl)) {
if (result.widget && result.widget != &form_widget) {
m_editor.selection().set(*result.widget);
// FIXME: Do we need to update any part of the FormEditorWidget outside the FormWidget?
form_widget.update();
}
}
m_dragging = false;
m_rubber_banding = false;
form_widget.update();
}
}
void CursorTool::on_mousemove(GUI::MouseEvent& event)
{
#if CURSOR_TOOL_DEBUG
dbgln("CursorTool::on_mousemove");
#endif
auto& form_widget = m_editor.form_widget();
if (m_rubber_banding) {
set_rubber_band_position(event.position());
return;
}
if (!m_dragging && event.buttons() & GUI::MouseButton::Left && event.position() != m_drag_origin) {
auto result = form_widget.hit_test(event.position(), GUI::Widget::ShouldRespectGreediness::No);
if (result.widget && result.widget != &form_widget) {
if (!m_editor.selection().contains(*result.widget)) {
m_editor.selection().set(*result.widget);
// FIXME: Do we need to update any part of the FormEditorWidget outside the FormWidget?
form_widget.update();
}
}
m_dragging = true;
}
if (m_dragging) {
auto movement_delta = event.position() - m_drag_origin;
m_editor.selection().for_each([&](auto& widget) {
auto new_rect = widget.relative_rect();
new_rect.set_location(m_positions_before_drag.get(&widget).value_or({}).translated(movement_delta));
new_rect.set_x(new_rect.x() - (new_rect.x() % m_editor.form_widget().grid_size()));
new_rect.set_y(new_rect.y() - (new_rect.y() % m_editor.form_widget().grid_size()));
widget.set_relative_rect(new_rect);
return IterationDecision::Continue;
});
m_editor.model().update();
return;
}
}
void CursorTool::on_keydown(GUI::KeyEvent& event)
{
#if CURSOR_TOOL_DEBUG
dbgln("CursorTool::on_keydown");
#endif
auto move_selected_widgets_by = [this](int x, int y) {
m_editor.selection().for_each([&](auto& widget) {
widget.move_by(x, y);
return IterationDecision::Continue;
});
};
if (event.modifiers() == 0) {
switch (event.key()) {
case Key_Down:
move_selected_widgets_by(0, m_editor.form_widget().grid_size());
break;
case Key_Up:
move_selected_widgets_by(0, -m_editor.form_widget().grid_size());
break;
case Key_Left:
move_selected_widgets_by(-m_editor.form_widget().grid_size(), 0);
break;
case Key_Right:
move_selected_widgets_by(m_editor.form_widget().grid_size(), 0);
break;
default:
break;
}
}
}
void CursorTool::set_rubber_band_position(const Gfx::IntPoint& position)
{
if (m_rubber_band_position == position)
return;
m_rubber_band_position = position;
auto rubber_band_rect = this->rubber_band_rect();
m_editor.selection().clear();
m_editor.form_widget().for_each_child_widget([&](auto& child) {
if (child.relative_rect().intersects(rubber_band_rect))
m_editor.selection().add(child);
return IterationDecision::Continue;
});
m_editor.form_widget().update();
}
Gfx::IntRect CursorTool::rubber_band_rect() const
{
if (!m_rubber_banding)
return {};
return Gfx::IntRect::from_two_points(m_rubber_band_origin, m_rubber_band_position);
}
void CursorTool::on_second_paint(GUI::Painter& painter, GUI::PaintEvent&)
{
if (!m_rubber_banding)
return;
auto rect = rubber_band_rect();
painter.fill_rect(rect, m_editor.palette().rubber_band_fill());
painter.draw_rect(rect, m_editor.palette().rubber_band_border());
}
}