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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MoveTool.h"
#include "../Image.h"
#include "../ImageEditor.h"
#include "../Layer.h"
#include <LibGUI/Action.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Window.h>
namespace PixelPaint {
MoveTool::MoveTool()
{
}
MoveTool::~MoveTool()
{
}
void MoveTool::on_mousedown(Layer* layer, MouseEvent& event)
{
if (event.image_event().button() == GUI::MouseButton::Right && !m_is_panning) {
m_is_panning = true;
m_event_origin = event.raw_event().position();
m_saved_pan_origin = m_editor->pan_origin();
m_editor->set_override_cursor(Gfx::StandardCursor::Drag);
return;
}
if (!layer)
return;
auto& layer_event = event.layer_event();
auto& image_event = event.image_event();
if (layer_event.button() != GUI::MouseButton::Left)
return;
if (!layer->rect().contains(layer_event.position()))
return;
m_layer_being_moved = *layer;
m_event_origin = image_event.position();
m_layer_origin = layer->location();
}
void MoveTool::on_mousemove(Layer* layer, MouseEvent& event)
{
if (m_is_panning) {
auto& raw_event = event.raw_event();
auto delta = raw_event.position() - m_event_origin;
m_editor->set_pan_origin(m_saved_pan_origin.translated(
-delta.x(),
-delta.y()));
return;
}
if (!layer)
return;
auto& image_event = event.image_event();
if (!m_layer_being_moved)
return;
auto delta = image_event.position() - m_event_origin;
m_layer_being_moved->set_location(m_layer_origin.translated(delta));
m_editor->layers_did_change();
}
void MoveTool::on_mouseup(Layer* layer, MouseEvent& event)
{
if (event.image_event().button() == GUI::MouseButton::Right && m_is_panning) {
m_is_panning = false;
m_editor->set_override_cursor(cursor());
return;
}
if (!layer)
return;
auto& layer_event = event.layer_event();
if (layer_event.button() != GUI::MouseButton::Left)
return;
m_layer_being_moved = nullptr;
m_editor->did_complete_action();
}
void MoveTool::on_keydown(GUI::KeyEvent& event)
{
if (event.modifiers() != 0)
return;
auto* layer = m_editor->active_layer();
if (!layer)
return;
auto new_location = layer->location();
switch (event.key()) {
case Key_Up:
new_location.translate_by(0, -1);
break;
case Key_Down:
new_location.translate_by(0, 1);
break;
case Key_Left:
new_location.translate_by(-1, 0);
break;
case Key_Right:
new_location.translate_by(1, 0);
break;
default:
return;
}
layer->set_location(new_location);
m_editor->layers_did_change();
}
}
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