forked from qt-creator/qt-creator
378 lines
10 KiB
C++
378 lines
10 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#include "movetool.h"
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#include "resizehandleitem.h"
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#include "qdeclarativedesignview.h"
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#include <QApplication>
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#include <QWheelEvent>
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#include <QAction>
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#include <QMouseEvent>
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#include <QtDebug>
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namespace QmlViewer {
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MoveTool::MoveTool(QDeclarativeDesignView *editorView)
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: AbstractFormEditorTool(editorView),
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m_moving(false),
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m_moveManipulator(editorView),
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m_selectionIndicator(editorView->manipulatorLayer()),
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m_resizeIndicator(editorView->manipulatorLayer())
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{
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}
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MoveTool::~MoveTool()
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{
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}
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void MoveTool::clear()
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{
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view()->clearHighlightBoundingRect();
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view()->setCursor(Qt::SizeAllCursor);
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m_moveManipulator.clear();
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m_movingItems.clear();
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m_resizeIndicator.clear();
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m_selectionIndicator.clear();
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}
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void MoveTool::mousePressEvent(QMouseEvent *event)
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{
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QList<QGraphicsItem*> itemList = view()->selectableItems(event->pos());
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if (event->buttons() & Qt::LeftButton) {
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m_moving = true;
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if (itemList.isEmpty()) {
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view()->changeTool(Constants::SelectionToolMode);
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return;
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}
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m_movingItems = movingItems(items());
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if (m_movingItems.isEmpty())
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return;
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m_moveManipulator.setItems(m_movingItems);
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m_moveManipulator.begin(event->pos());
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} else if (event->buttons() & Qt::RightButton) {
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view()->changeTool(Constants::SelectionToolMode);
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}
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}
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void MoveTool::mouseMoveEvent(QMouseEvent *event)
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{
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if (m_movingItems.isEmpty())
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return;
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if (event->buttons() & Qt::LeftButton) {
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m_selectionIndicator.hide();
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m_resizeIndicator.hide();
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// QGraphicsItem *containerItem = containerQGraphicsItem(itemList, m_movingItems);
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// if (containerItem
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// && view()->currentState().isBaseState()) {
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// if (containerItem != m_movingItems.first()->parentItem()
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// && event->modifiers().testFlag(Qt::ShiftModifier)) {
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// m_moveManipulator.reparentTo(containerItem);
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// }
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// }
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// bool shouldSnapping = view()->widget()->snappingAction()->isChecked();
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// bool shouldSnappingAndAnchoring = view()->widget()->snappingAndAnchoringAction()->isChecked();
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// MoveManipulator::Snapping useSnapping = MoveManipulator::NoSnapping;
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// if (event->modifiers().testFlag(Qt::ControlModifier) != (shouldSnapping || shouldSnappingAndAnchoring)) {
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// if (shouldSnappingAndAnchoring)
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// useSnapping = MoveManipulator::UseSnappingAndAnchoring;
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// else
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// useSnapping = MoveManipulator::UseSnapping;
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// }
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m_moveManipulator.update(event->pos(), MoveManipulator::NoSnapping);
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}
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}
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void MoveTool::mouseReleaseEvent(QMouseEvent *event)
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{
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if (m_movingItems.isEmpty())
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return;
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if (m_moving) {
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QLineF moveVector(event->pos(), m_moveManipulator.beginPoint());
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if (moveVector.length() < QApplication::startDragDistance())
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{
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QPointF beginPoint(m_moveManipulator.beginPoint());
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m_moveManipulator.end(beginPoint);
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m_selectionIndicator.show();
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m_resizeIndicator.show();
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m_movingItems.clear();
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view()->changeTool(Constants::SelectionToolMode,
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Constants::UseCursorPos);
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} else {
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m_moveManipulator.end(event->pos());
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m_selectionIndicator.show();
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m_resizeIndicator.show();
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m_movingItems.clear();
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}
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qDebug() << "releasing";
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view()->changeTool(Constants::ResizeToolMode);
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}
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m_moving = false;
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qDebug() << "released";
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}
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void MoveTool::hoverMoveEvent(QMouseEvent *event)
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{
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QList<QGraphicsItem*> itemList = view()->items(event->pos());
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if (itemList.isEmpty()) {
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view()->changeTool(Constants::SelectionToolMode);
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return;
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}
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ResizeHandleItem* resizeHandle = ResizeHandleItem::fromGraphicsItem(itemList.first());
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if (resizeHandle) {
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view()->changeTool(Constants::ResizeToolMode);
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return;
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}
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QList<QGraphicsItem*> selectableItemList = view()->selectableItems(event->pos());
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if (!topSelectedItemIsMovable(selectableItemList)) {
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view()->changeTool(Constants::SelectionToolMode);
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return;
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}
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}
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void MoveTool::keyPressEvent(QKeyEvent *event)
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{
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switch(event->key()) {
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case Qt::Key_Shift:
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case Qt::Key_Alt:
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case Qt::Key_Control:
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case Qt::Key_AltGr:
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event->setAccepted(false);
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return;
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}
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double moveStep = 1.0;
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if (event->modifiers().testFlag(Qt::ShiftModifier))
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moveStep = 10.0;
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if (!event->isAutoRepeat()) {
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QList<QGraphicsItem*> movableItems(movingItems(items()));
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if (movableItems.isEmpty())
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return;
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m_moveManipulator.setItems(movableItems);
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m_selectionIndicator.hide();
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m_resizeIndicator.hide();
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}
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switch(event->key()) {
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case Qt::Key_Left: m_moveManipulator.moveBy(-moveStep, 0.0); break;
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case Qt::Key_Right: m_moveManipulator.moveBy(moveStep, 0.0); break;
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case Qt::Key_Up: m_moveManipulator.moveBy(0.0, -moveStep); break;
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case Qt::Key_Down: m_moveManipulator.moveBy(0.0, moveStep); break;
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}
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}
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void MoveTool::keyReleaseEvent(QKeyEvent *keyEvent)
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{
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switch(keyEvent->key()) {
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case Qt::Key_Shift:
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case Qt::Key_Alt:
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case Qt::Key_Control:
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case Qt::Key_AltGr:
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keyEvent->setAccepted(false);
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return;
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}
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if (!keyEvent->isAutoRepeat()) {
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m_moveManipulator.clear();
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m_selectionIndicator.show();
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m_resizeIndicator.show();
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}
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}
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void MoveTool::wheelEvent(QWheelEvent */*event*/)
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{
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}
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void MoveTool::mouseDoubleClickEvent(QMouseEvent * /*event*/)
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{
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}
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void MoveTool::itemsAboutToRemoved(const QList<QGraphicsItem*> &removedItemList)
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{
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foreach (QGraphicsItem* removedItem, removedItemList)
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m_movingItems.removeOne(removedItem);
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}
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void MoveTool::selectedItemsChanged(const QList<QGraphicsItem*> &itemList)
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{
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m_selectionIndicator.setItems(toGraphicsObjectList(itemList));
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m_resizeIndicator.setItems(toGraphicsObjectList(itemList));
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updateMoveManipulator();
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}
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bool MoveTool::haveSameParent(const QList<QGraphicsItem*> &itemList)
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{
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if (itemList.isEmpty())
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return false;
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QGraphicsItem *firstParent = itemList.first()->parentItem();
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foreach (QGraphicsItem* item, itemList)
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{
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if (firstParent != item->parentItem())
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return false;
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}
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return true;
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}
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bool MoveTool::isAncestorOfAllItems(QGraphicsItem* maybeAncestorItem,
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const QList<QGraphicsItem*> &itemList)
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{
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foreach (QGraphicsItem* item, itemList)
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{
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if (!maybeAncestorItem->isAncestorOf(item) && item != maybeAncestorItem)
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return false;
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}
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return true;
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}
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QGraphicsItem* MoveTool::ancestorIfOtherItemsAreChild(const QList<QGraphicsItem*> &itemList)
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{
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if (itemList.isEmpty())
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return 0;
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foreach (QGraphicsItem* item, itemList)
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{
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if (isAncestorOfAllItems(item, itemList))
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return item;
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}
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return 0;
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}
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void MoveTool::updateMoveManipulator()
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{
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if (m_moveManipulator.isActive())
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return;
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}
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void MoveTool::beginWithPoint(const QPointF &beginPoint)
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{
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m_movingItems = movingItems(items());
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if (m_movingItems.isEmpty())
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return;
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m_moving = true;
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m_moveManipulator.setItems(m_movingItems);
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m_moveManipulator.begin(beginPoint);
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}
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//static bool isNotAncestorOfItemInList(QGraphicsItem *graphicsItem, const QList<QGraphicsItem*> &itemList)
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//{
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// foreach (QGraphicsItem *item, itemList) {
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// if (item->qmlItemNode().isAncestorOf(graphicsItem->qmlItemNode()))
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// return false;
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// }
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// return true;
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//}
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//QGraphicsItem* MoveTool::containerQGraphicsItem(const QList<QGraphicsItem*> &itemUnderMouseList,
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// const QList<QGraphicsItem*> &selectedItemList)
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//{
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// Q_ASSERT(!selectedItemList.isEmpty());
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// foreach (QGraphicsItem* item, itemUnderMouseList) {
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// QGraphicsItem *QGraphicsItem = QGraphicsItem::fromQGraphicsItem(item);
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// if (QGraphicsItem
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// && !selectedItemList.contains(QGraphicsItem)
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// && isNotAncestorOfItemInList(QGraphicsItem, selectedItemList))
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// return QGraphicsItem;
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// }
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// return 0;
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//}
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QList<QGraphicsItem*> MoveTool::movingItems(const QList<QGraphicsItem*> &selectedItemList)
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{
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QGraphicsItem* ancestorItem = ancestorIfOtherItemsAreChild(selectedItemList);
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// if (ancestorItem != 0 && ancestorItem->qmlItemNode().isRootNode()) {
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// view()->changeTool(QDeclarativeDesignView::SelectionToolMode);
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// return QList<QGraphicsItem*>();
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// }
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if (ancestorItem != 0 && ancestorItem->parentItem() != 0) {
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QList<QGraphicsItem*> ancestorItemList;
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ancestorItemList.append(ancestorItem);
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return ancestorItemList;
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}
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if (!haveSameParent(selectedItemList)) {
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view()->changeTool(Constants::SelectionToolMode);
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return QList<QGraphicsItem*>();
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}
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return selectedItemList;
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}
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void MoveTool::graphicsObjectsChanged(const QList<QGraphicsObject*> &itemList)
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{
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m_selectionIndicator.updateItems(itemList);
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m_resizeIndicator.updateItems(itemList);
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}
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}
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