5635823e17
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
481 lines
15 KiB
C++
481 lines
15 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qtbox.h"
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const qreal ROTATE_SPEED_X = 30.0 / 1000.0;
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const qreal ROTATE_SPEED_Y = 20.0 / 1000.0;
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const qreal ROTATE_SPEED_Z = 40.0 / 1000.0;
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const int MAX_ITEM_SIZE = 512;
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const int MIN_ITEM_SIZE = 16;
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//============================================================================//
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// ItemBase //
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//============================================================================//
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ItemBase::ItemBase(int size, int x, int y) : m_size(size), m_isResizing(false)
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{
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setFlag(QGraphicsItem::ItemIsMovable, true);
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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setFlag(QGraphicsItem::ItemIsFocusable, true);
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setAcceptHoverEvents(true);
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setPos(x, y);
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m_startTime = QTime::currentTime();
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}
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ItemBase::~ItemBase()
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{
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}
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QRectF ItemBase::boundingRect() const
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{
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return QRectF(-m_size / 2, -m_size / 2, m_size, m_size);
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}
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void ItemBase::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
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{
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if (option->state & QStyle::State_Selected) {
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painter->setRenderHint(QPainter::Antialiasing, true);
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if (option->state & QStyle::State_HasFocus)
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painter->setPen(Qt::yellow);
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else
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painter->setPen(Qt::white);
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painter->drawRect(boundingRect());
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painter->drawLine(m_size / 2 - 9, m_size / 2, m_size / 2, m_size / 2 - 9);
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painter->drawLine(m_size / 2 - 6, m_size / 2, m_size / 2, m_size / 2 - 6);
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painter->drawLine(m_size / 2 - 3, m_size / 2, m_size / 2, m_size / 2 - 3);
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painter->setRenderHint(QPainter::Antialiasing, false);
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}
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}
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void ItemBase::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
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{
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if (!isSelected() && scene()) {
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scene()->clearSelection();
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setSelected(true);
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}
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QMenu menu;
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QAction *delAction = menu.addAction("Delete");
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QAction *newAction = menu.addAction("New");
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QAction *growAction = menu.addAction("Grow");
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QAction *shrinkAction = menu.addAction("Shrink");
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QAction *selectedAction = menu.exec(event->screenPos());
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if (selectedAction == delAction)
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deleteSelectedItems(scene());
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else if (selectedAction == newAction)
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duplicateSelectedItems(scene());
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else if (selectedAction == growAction)
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growSelectedItems(scene());
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else if (selectedAction == shrinkAction)
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shrinkSelectedItems(scene());
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}
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void ItemBase::duplicateSelectedItems(QGraphicsScene *scene)
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{
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if (!scene)
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return;
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QList<QGraphicsItem *> selected;
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selected = scene->selectedItems();
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foreach (QGraphicsItem *item, selected) {
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ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item);
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if (itemBase)
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scene->addItem(itemBase->createNew(itemBase->m_size, itemBase->pos().x() + itemBase->m_size, itemBase->pos().y()));
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}
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}
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void ItemBase::deleteSelectedItems(QGraphicsScene *scene)
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{
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if (!scene)
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return;
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QList<QGraphicsItem *> selected;
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selected = scene->selectedItems();
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foreach (QGraphicsItem *item, selected) {
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ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item);
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if (itemBase)
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delete itemBase;
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}
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}
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void ItemBase::growSelectedItems(QGraphicsScene *scene)
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{
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if (!scene)
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return;
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QList<QGraphicsItem *> selected;
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selected = scene->selectedItems();
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foreach (QGraphicsItem *item, selected) {
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ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item);
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if (itemBase) {
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itemBase->prepareGeometryChange();
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itemBase->m_size *= 2;
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if (itemBase->m_size > MAX_ITEM_SIZE)
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itemBase->m_size = MAX_ITEM_SIZE;
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}
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}
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}
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void ItemBase::shrinkSelectedItems(QGraphicsScene *scene)
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{
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if (!scene)
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return;
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QList<QGraphicsItem *> selected;
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selected = scene->selectedItems();
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foreach (QGraphicsItem *item, selected) {
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ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item);
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if (itemBase) {
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itemBase->prepareGeometryChange();
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itemBase->m_size /= 2;
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if (itemBase->m_size < MIN_ITEM_SIZE)
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itemBase->m_size = MIN_ITEM_SIZE;
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}
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}
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}
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void ItemBase::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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if (m_isResizing) {
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int dx = int(2.0 * event->pos().x());
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int dy = int(2.0 * event->pos().y());
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prepareGeometryChange();
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m_size = (dx > dy ? dx : dy);
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if (m_size < MIN_ITEM_SIZE)
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m_size = MIN_ITEM_SIZE;
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else if (m_size > MAX_ITEM_SIZE)
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m_size = MAX_ITEM_SIZE;
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} else {
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QGraphicsItem::mouseMoveEvent(event);
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}
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}
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void ItemBase::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
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{
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if (m_isResizing || (isInResizeArea(event->pos()) && isSelected()))
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setCursor(Qt::SizeFDiagCursor);
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else
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setCursor(Qt::ArrowCursor);
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QGraphicsItem::hoverMoveEvent(event);
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}
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void ItemBase::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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static qreal z = 0.0;
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setZValue(z += 1.0);
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if (event->button() == Qt::LeftButton && isInResizeArea(event->pos())) {
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m_isResizing = true;
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} else {
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QGraphicsItem::mousePressEvent(event);
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}
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}
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void ItemBase::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton && m_isResizing) {
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m_isResizing = false;
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} else {
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QGraphicsItem::mouseReleaseEvent(event);
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}
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}
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void ItemBase::keyPressEvent(QKeyEvent *event)
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{
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switch (event->key()) {
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case Qt::Key_Delete:
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deleteSelectedItems(scene());
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break;
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case Qt::Key_Insert:
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duplicateSelectedItems(scene());
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break;
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case Qt::Key_Plus:
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growSelectedItems(scene());
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break;
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case Qt::Key_Minus:
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shrinkSelectedItems(scene());
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break;
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default:
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QGraphicsItem::keyPressEvent(event);
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break;
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}
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}
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void ItemBase::wheelEvent(QGraphicsSceneWheelEvent *event)
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{
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prepareGeometryChange();
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m_size = int(m_size * exp(-event->delta() / 600.0));
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if (m_size > MAX_ITEM_SIZE)
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m_size = MAX_ITEM_SIZE;
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else if (m_size < MIN_ITEM_SIZE)
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m_size = MIN_ITEM_SIZE;
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}
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int ItemBase::type() const
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{
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return Type;
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}
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bool ItemBase::isInResizeArea(const QPointF &pos)
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{
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return (-pos.y() < pos.x() - m_size + 9);
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}
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//============================================================================//
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// QtBox //
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//============================================================================//
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QtBox::QtBox(int size, int x, int y) : ItemBase(size, x, y), m_texture(0)
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{
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for (int i = 0; i < 8; ++i) {
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m_vertices[i].setX(i & 1 ? 0.5f : -0.5f);
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m_vertices[i].setY(i & 2 ? 0.5f : -0.5f);
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m_vertices[i].setZ(i & 4 ? 0.5f : -0.5f);
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}
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for (int i = 0; i < 4; ++i) {
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m_texCoords[i].setX(i & 1 ? 1.0f : 0.0f);
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m_texCoords[i].setY(i & 2 ? 1.0f : 0.0f);
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}
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m_normals[0] = QVector3D(-1.0f, 0.0f, 0.0f);
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m_normals[1] = QVector3D(1.0f, 0.0f, 0.0f);
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m_normals[2] = QVector3D(0.0f, -1.0f, 0.0f);
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m_normals[3] = QVector3D(0.0f, 1.0f, 0.0f);
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m_normals[4] = QVector3D(0.0f, 0.0f, -1.0f);
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m_normals[5] = QVector3D(0.0f, 0.0f, 1.0f);
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}
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QtBox::~QtBox()
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{
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if (m_texture)
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delete m_texture;
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}
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ItemBase *QtBox::createNew(int size, int x, int y)
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{
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return new QtBox(size, x, y);
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}
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void QtBox::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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QRectF rect = boundingRect().translated(pos());
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float width = float(painter->device()->width());
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float height = float(painter->device()->height());
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float left = 2.0f * float(rect.left()) / width - 1.0f;
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float right = 2.0f * float(rect.right()) / width - 1.0f;
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float top = 1.0f - 2.0f * float(rect.top()) / height;
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float bottom = 1.0f - 2.0f * float(rect.bottom()) / height;
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float moveToRectMatrix[] = {
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0.5f * (right - left), 0.0f, 0.0f, 0.0f,
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0.0f, 0.5f * (bottom - top), 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.5f * (right + left), 0.5f * (bottom + top), 0.0f, 1.0f
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};
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painter->beginNativePainting();
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glMatrixMode(GL_PROJECTION);
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glPushMatrix();
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glLoadMatrixf(moveToRectMatrix);
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qgluPerspective(60.0, 1.0, 0.01, 10.0);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glLoadIdentity();
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//glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glEnable(GL_LIGHTING);
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glEnable(GL_COLOR_MATERIAL);
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glEnable(GL_NORMALIZE);
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if(m_texture == 0)
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m_texture = new GLTexture2D(":/res/boxes/qt-logo.jpg", 64, 64);
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m_texture->bind();
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glEnable(GL_TEXTURE_2D);
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glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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float lightColour[] = {1.0f, 1.0f, 1.0f, 1.0f};
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float lightDir[] = {0.0f, 0.0f, 1.0f, 0.0f};
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glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColour);
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glLightfv(GL_LIGHT0, GL_POSITION, lightDir);
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glEnable(GL_LIGHT0);
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glTranslatef(0.0f, 0.0f, -1.5f);
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glRotatef(ROTATE_SPEED_X * m_startTime.msecsTo(QTime::currentTime()), 1.0f, 0.0f, 0.0f);
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glRotatef(ROTATE_SPEED_Y * m_startTime.msecsTo(QTime::currentTime()), 0.0f, 1.0f, 0.0f);
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glRotatef(ROTATE_SPEED_Z * m_startTime.msecsTo(QTime::currentTime()), 0.0f, 0.0f, 1.0f);
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int dt = m_startTime.msecsTo(QTime::currentTime());
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if (dt < 500)
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glScalef(dt / 500.0f, dt / 500.0f, dt / 500.0f);
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for (int dir = 0; dir < 3; ++dir) {
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glColor4f(1.0f, 1.0f, 1.0f, 1.0);
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glBegin(GL_TRIANGLE_STRIP);
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glNormal3fv(reinterpret_cast<float *>(&m_normals[2 * dir + 0]));
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 2; ++j) {
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glTexCoord2fv(reinterpret_cast<float *>(&m_texCoords[(j << 1) | i]));
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glVertex3fv(reinterpret_cast<float *>(&m_vertices[(i << ((dir + 2) % 3)) | (j << ((dir + 1) % 3))]));
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}
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}
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glEnd();
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glBegin(GL_TRIANGLE_STRIP);
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glNormal3fv(reinterpret_cast<float *>(&m_normals[2 * dir + 1]));
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 2; ++j) {
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glTexCoord2fv(reinterpret_cast<float *>(&m_texCoords[(j << 1) | i]));
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glVertex3fv(reinterpret_cast<float *>(&m_vertices[(1 << dir) | (i << ((dir + 1) % 3)) | (j << ((dir + 2) % 3))]));
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}
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}
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glEnd();
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}
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m_texture->unbind();
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//glDisable(GL_DEPTH_TEST);
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glDisable(GL_CULL_FACE);
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glDisable(GL_LIGHTING);
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glDisable(GL_COLOR_MATERIAL);
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glDisable(GL_TEXTURE_2D);
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glDisable(GL_LIGHT0);
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glDisable(GL_NORMALIZE);
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glPopMatrix();
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glMatrixMode(GL_PROJECTION);
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glPopMatrix();
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painter->endNativePainting();
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ItemBase::paint(painter, option, widget);
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}
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//============================================================================//
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// CircleItem //
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//============================================================================//
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CircleItem::CircleItem(int size, int x, int y) : ItemBase(size, x, y)
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{
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m_color = QColor::fromHsv(rand() % 360, 255, 255);
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}
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void CircleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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int dt = m_startTime.msecsTo(QTime::currentTime());
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qreal r0 = 0.5 * m_size * (1.0 - exp(-0.001 * ((dt + 3800) % 4000)));
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qreal r1 = 0.5 * m_size * (1.0 - exp(-0.001 * ((dt + 0) % 4000)));
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qreal r2 = 0.5 * m_size * (1.0 - exp(-0.001 * ((dt + 1800) % 4000)));
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qreal r3 = 0.5 * m_size * (1.0 - exp(-0.001 * ((dt + 2000) % 4000)));
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if (r0 > r1)
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r0 = 0.0;
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if (r2 > r3)
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r2 = 0.0;
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QPainterPath path;
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path.moveTo(r1, 0.0);
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path.arcTo(-r1, -r1, 2 * r1, 2 * r1, 0.0, 360.0);
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path.lineTo(r0, 0.0);
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path.arcTo(-r0, -r0, 2 * r0, 2 * r0, 0.0, -360.0);
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path.closeSubpath();
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path.moveTo(r3, 0.0);
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path.arcTo(-r3, -r3, 2 * r3, 2 * r3, 0.0, 360.0);
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path.lineTo(r0, 0.0);
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path.arcTo(-r2, -r2, 2 * r2, 2 * r2, 0.0, -360.0);
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path.closeSubpath();
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painter->setRenderHint(QPainter::Antialiasing, true);
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painter->setBrush(QBrush(m_color));
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painter->setPen(Qt::NoPen);
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painter->drawPath(path);
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painter->setBrush(Qt::NoBrush);
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painter->setPen(Qt::SolidLine);
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painter->setRenderHint(QPainter::Antialiasing, false);
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ItemBase::paint(painter, option, widget);
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}
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ItemBase *CircleItem::createNew(int size, int x, int y)
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{
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return new CircleItem(size, x, y);
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}
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//============================================================================//
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// SquareItem //
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//============================================================================//
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SquareItem::SquareItem(int size, int x, int y) : ItemBase(size, x, y)
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{
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m_image = QPixmap(":/res/boxes/square.jpg");
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}
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void SquareItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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int dt = m_startTime.msecsTo(QTime::currentTime());
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QTransform oldTransform = painter->worldTransform();
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int dtMod = dt % 2000;
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qreal amp = 0.002 * (dtMod < 1000 ? dtMod : 2000 - dtMod) - 1.0;
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qreal scale = 0.6 + 0.2 * amp * amp;
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painter->setWorldTransform(QTransform().rotate(15.0 * amp).scale(scale, scale), true);
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|
|
|
painter->drawPixmap(-m_size / 2, -m_size / 2, m_size, m_size, m_image);
|
|
|
|
painter->setWorldTransform(oldTransform, false);
|
|
ItemBase::paint(painter, option, widget);
|
|
}
|
|
|
|
ItemBase *SquareItem::createNew(int size, int x, int y)
|
|
{
|
|
return new SquareItem(size, x, y);
|
|
}
|