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Diffstat (limited to 'examples/widgets/graphicsview/boxes/qtbox.cpp')
| -rw-r--r-- | examples/widgets/graphicsview/boxes/qtbox.cpp | 470 |
1 files changed, 0 insertions, 470 deletions
diff --git a/examples/widgets/graphicsview/boxes/qtbox.cpp b/examples/widgets/graphicsview/boxes/qtbox.cpp deleted file mode 100644 index 8713aac05d..0000000000 --- a/examples/widgets/graphicsview/boxes/qtbox.cpp +++ /dev/null @@ -1,470 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * 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. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** 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 -** OWNER 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qtbox.h" - -constexpr qreal ROTATE_SPEED_X = 30.0 / 1000.0; -constexpr qreal ROTATE_SPEED_Y = 20.0 / 1000.0; -constexpr qreal ROTATE_SPEED_Z = 40.0 / 1000.0; -constexpr int MAX_ITEM_SIZE = 512; -constexpr int MIN_ITEM_SIZE = 16; - -//============================================================================// -// ItemBase // -//============================================================================// - -ItemBase::ItemBase(int size, int x, int y) : m_size(size), m_startTime(QTime::currentTime()) -{ - setFlag(QGraphicsItem::ItemIsMovable, true); - setFlag(QGraphicsItem::ItemIsSelectable, true); - setFlag(QGraphicsItem::ItemIsFocusable, true); - setAcceptHoverEvents(true); - setPos(x, y); -} - -QRectF ItemBase::boundingRect() const -{ - return QRectF(-m_size / 2, -m_size / 2, m_size, m_size); -} - -void ItemBase::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *) -{ - if (option->state & QStyle::State_Selected) { - painter->setRenderHint(QPainter::Antialiasing, true); - if (option->state & QStyle::State_HasFocus) - painter->setPen(Qt::yellow); - else - painter->setPen(Qt::white); - painter->drawRect(boundingRect()); - - painter->drawLine(m_size / 2 - 9, m_size / 2, m_size / 2, m_size / 2 - 9); - painter->drawLine(m_size / 2 - 6, m_size / 2, m_size / 2, m_size / 2 - 6); - painter->drawLine(m_size / 2 - 3, m_size / 2, m_size / 2, m_size / 2 - 3); - - painter->setRenderHint(QPainter::Antialiasing, false); - } -} - -void ItemBase::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) -{ - if (!isSelected() && scene()) { - scene()->clearSelection(); - setSelected(true); - } - - QMenu menu; - QAction *delAction = menu.addAction("Delete"); - QAction *newAction = menu.addAction("New"); - QAction *growAction = menu.addAction("Grow"); - QAction *shrinkAction = menu.addAction("Shrink"); - - QAction *selectedAction = menu.exec(event->screenPos()); - - if (selectedAction == delAction) - deleteSelectedItems(scene()); - else if (selectedAction == newAction) - duplicateSelectedItems(scene()); - else if (selectedAction == growAction) - growSelectedItems(scene()); - else if (selectedAction == shrinkAction) - shrinkSelectedItems(scene()); -} - -void ItemBase::duplicateSelectedItems(QGraphicsScene *scene) -{ - if (!scene) - return; - - const QList<QGraphicsItem *> selected = scene->selectedItems(); - for (QGraphicsItem *item : selected) { - ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item); - if (itemBase) - scene->addItem(itemBase->createNew(itemBase->m_size, itemBase->pos().x() + itemBase->m_size, itemBase->pos().y())); - } -} - -void ItemBase::deleteSelectedItems(QGraphicsScene *scene) -{ - if (!scene) - return; - - const QList<QGraphicsItem *> selected = scene->selectedItems(); - for (QGraphicsItem *item : selected) { - ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item); - if (itemBase) - delete itemBase; - } -} - -void ItemBase::growSelectedItems(QGraphicsScene *scene) -{ - if (!scene) - return; - - const QList<QGraphicsItem *> selected = scene->selectedItems(); - for (QGraphicsItem *item : selected) { - ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item); - if (itemBase) { - itemBase->prepareGeometryChange(); - itemBase->m_size *= 2; - if (itemBase->m_size > MAX_ITEM_SIZE) - itemBase->m_size = MAX_ITEM_SIZE; - } - } -} - -void ItemBase::shrinkSelectedItems(QGraphicsScene *scene) -{ - if (!scene) - return; - - const QList<QGraphicsItem *> selected = scene->selectedItems(); - for (QGraphicsItem *item : selected) { - ItemBase *itemBase = qgraphicsitem_cast<ItemBase *>(item); - if (itemBase) { - itemBase->prepareGeometryChange(); - itemBase->m_size /= 2; - if (itemBase->m_size < MIN_ITEM_SIZE) - itemBase->m_size = MIN_ITEM_SIZE; - } - } -} - -void ItemBase::mouseMoveEvent(QGraphicsSceneMouseEvent *event) -{ - if (m_isResizing) { - int dx = int(2.0 * event->pos().x()); - int dy = int(2.0 * event->pos().y()); - prepareGeometryChange(); - m_size = (dx > dy ? dx : dy); - if (m_size < MIN_ITEM_SIZE) - m_size = MIN_ITEM_SIZE; - else if (m_size > MAX_ITEM_SIZE) - m_size = MAX_ITEM_SIZE; - } else { - QGraphicsItem::mouseMoveEvent(event); - } -} - -void ItemBase::hoverMoveEvent(QGraphicsSceneHoverEvent *event) -{ - if (m_isResizing || (isInResizeArea(event->pos()) && isSelected())) - setCursor(Qt::SizeFDiagCursor); - else - setCursor(Qt::ArrowCursor); - QGraphicsItem::hoverMoveEvent(event); -} - -void ItemBase::mousePressEvent(QGraphicsSceneMouseEvent *event) -{ - static qreal z = 0.0; - setZValue(z += 1.0); - if (event->button() == Qt::LeftButton && isInResizeArea(event->pos())) { - m_isResizing = true; - } else { - QGraphicsItem::mousePressEvent(event); - } -} - -void ItemBase::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) -{ - if (event->button() == Qt::LeftButton && m_isResizing) { - m_isResizing = false; - } else { - QGraphicsItem::mouseReleaseEvent(event); - } -} - -void ItemBase::keyPressEvent(QKeyEvent *event) -{ - switch (event->key()) { - case Qt::Key_Delete: - deleteSelectedItems(scene()); - break; - case Qt::Key_Insert: - duplicateSelectedItems(scene()); - break; - case Qt::Key_Plus: - growSelectedItems(scene()); - break; - case Qt::Key_Minus: - shrinkSelectedItems(scene()); - break; - default: - QGraphicsItem::keyPressEvent(event); - break; - } -} - -void ItemBase::wheelEvent(QGraphicsSceneWheelEvent *event) -{ - prepareGeometryChange(); - m_size = int(m_size * qExp(-event->delta() / 600.0)); - m_size = qBound(MIN_ITEM_SIZE, m_size, MAX_ITEM_SIZE); -} - -int ItemBase::type() const -{ - return Type; -} - - -bool ItemBase::isInResizeArea(const QPointF &pos) -{ - return (-pos.y() < pos.x() - m_size + 9); -} - -//============================================================================// -// QtBox // -//============================================================================// - -QtBox::QtBox(int size, int x, int y) : ItemBase(size, x, y) -{ - for (int i = 0; i < 8; ++i) { - m_vertices[i].setX(i & 1 ? 0.5f : -0.5f); - m_vertices[i].setY(i & 2 ? 0.5f : -0.5f); - m_vertices[i].setZ(i & 4 ? 0.5f : -0.5f); - } - for (int i = 0; i < 4; ++i) { - m_texCoords[i].setX(i & 1 ? 1.0f : 0.0f); - m_texCoords[i].setY(i & 2 ? 1.0f : 0.0f); - } - m_normals[0] = QVector3D(-1.0f, 0.0f, 0.0f); - m_normals[1] = QVector3D(1.0f, 0.0f, 0.0f); - m_normals[2] = QVector3D(0.0f, -1.0f, 0.0f); - m_normals[3] = QVector3D(0.0f, 1.0f, 0.0f); - m_normals[4] = QVector3D(0.0f, 0.0f, -1.0f); - m_normals[5] = QVector3D(0.0f, 0.0f, 1.0f); -} - -QtBox::~QtBox() -{ - delete m_texture; -} - -ItemBase *QtBox::createNew(int size, int x, int y) -{ - return new QtBox(size, x, y); -} - -void QtBox::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) -{ - QRectF rect = boundingRect().translated(pos()); - float width = float(painter->device()->width()); - float height = float(painter->device()->height()); - - float left = 2.0f * float(rect.left()) / width - 1.0f; - float right = 2.0f * float(rect.right()) / width - 1.0f; - float top = 1.0f - 2.0f * float(rect.top()) / height; - float bottom = 1.0f - 2.0f * float(rect.bottom()) / height; - float moveToRectMatrix[] = { - 0.5f * (right - left), 0.0f, 0.0f, 0.0f, - 0.0f, 0.5f * (bottom - top), 0.0f, 0.0f, - 0.0f, 0.0f, 1.0f, 0.0f, - 0.5f * (right + left), 0.5f * (bottom + top), 0.0f, 1.0f - }; - - painter->beginNativePainting(); - - glMatrixMode(GL_PROJECTION); - glPushMatrix(); - glLoadMatrixf(moveToRectMatrix); - qgluPerspective(60.0, 1.0, 0.01, 10.0); - - glMatrixMode(GL_MODELVIEW); - glPushMatrix(); - glLoadIdentity(); - - //glEnable(GL_DEPTH_TEST); - glEnable(GL_CULL_FACE); - glEnable(GL_LIGHTING); - glEnable(GL_COLOR_MATERIAL); - glEnable(GL_NORMALIZE); - - if (m_texture == nullptr) - m_texture = new GLTexture2D(":/res/boxes/qt-logo.jpg", 64, 64); - m_texture->bind(); - glEnable(GL_TEXTURE_2D); - - glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE); - float lightColour[] = {1.0f, 1.0f, 1.0f, 1.0f}; - float lightDir[] = {0.0f, 0.0f, 1.0f, 0.0f}; - glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColour); - glLightfv(GL_LIGHT0, GL_POSITION, lightDir); - glEnable(GL_LIGHT0); - - glTranslatef(0.0f, 0.0f, -1.5f); - glRotatef(ROTATE_SPEED_X * m_startTime.msecsTo(QTime::currentTime()), 1.0f, 0.0f, 0.0f); - glRotatef(ROTATE_SPEED_Y * m_startTime.msecsTo(QTime::currentTime()), 0.0f, 1.0f, 0.0f); - glRotatef(ROTATE_SPEED_Z * m_startTime.msecsTo(QTime::currentTime()), 0.0f, 0.0f, 1.0f); - int dt = m_startTime.msecsTo(QTime::currentTime()); - if (dt < 500) - glScalef(dt / 500.0f, dt / 500.0f, dt / 500.0f); - - for (int dir = 0; dir < 3; ++dir) { - glColor4f(1.0f, 1.0f, 1.0f, 1.0); - - glBegin(GL_TRIANGLE_STRIP); - glNormal3fv(reinterpret_cast<float *>(&m_normals[2 * dir + 0])); - for (int i = 0; i < 2; ++i) { - for (int j = 0; j < 2; ++j) { - glTexCoord2fv(reinterpret_cast<float *>(&m_texCoords[(j << 1) | i])); - glVertex3fv(reinterpret_cast<float *>(&m_vertices[(i << ((dir + 2) % 3)) | (j << ((dir + 1) % 3))])); - } - } - glEnd(); - - glBegin(GL_TRIANGLE_STRIP); - glNormal3fv(reinterpret_cast<float *>(&m_normals[2 * dir + 1])); - for (int i = 0; i < 2; ++i) { - for (int j = 0; j < 2; ++j) { - glTexCoord2fv(reinterpret_cast<float *>(&m_texCoords[(j << 1) | i])); - glVertex3fv(reinterpret_cast<float *>(&m_vertices[(1 << dir) | (i << ((dir + 1) % 3)) | (j << ((dir + 2) % 3))])); - } - } - glEnd(); - } - m_texture->unbind(); - - //glDisable(GL_DEPTH_TEST); - glDisable(GL_CULL_FACE); - glDisable(GL_LIGHTING); - glDisable(GL_COLOR_MATERIAL); - glDisable(GL_TEXTURE_2D); - glDisable(GL_LIGHT0); - glDisable(GL_NORMALIZE); - - glPopMatrix(); - - glMatrixMode(GL_PROJECTION); - glPopMatrix(); - - painter->endNativePainting(); - - ItemBase::paint(painter, option, widget); -} - -//============================================================================// -// CircleItem // -//============================================================================// - -CircleItem::CircleItem(int size, int x, int y) : ItemBase(size, x, y) - , m_color(QColor::fromHsv(QRandomGenerator::global()->bounded(360), 255, 255)) -{} - -void CircleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) -{ - int dt = m_startTime.msecsTo(QTime::currentTime()); - - qreal r0 = 0.5 * m_size * (1.0 - qExp(-0.001 * ((dt + 3800) % 4000))); - qreal r1 = 0.5 * m_size * (1.0 - qExp(-0.001 * ((dt + 0) % 4000))); - qreal r2 = 0.5 * m_size * (1.0 - qExp(-0.001 * ((dt + 1800) % 4000))); - qreal r3 = 0.5 * m_size * (1.0 - qExp(-0.001 * ((dt + 2000) % 4000))); - - if (r0 > r1) - r0 = 0.0; - if (r2 > r3) - r2 = 0.0; - - QPainterPath path; - path.moveTo(r1, 0.0); - path.arcTo(-r1, -r1, 2 * r1, 2 * r1, 0.0, 360.0); - path.lineTo(r0, 0.0); - path.arcTo(-r0, -r0, 2 * r0, 2 * r0, 0.0, -360.0); - path.closeSubpath(); - path.moveTo(r3, 0.0); - path.arcTo(-r3, -r3, 2 * r3, 2 * r3, 0.0, 360.0); - path.lineTo(r0, 0.0); - path.arcTo(-r2, -r2, 2 * r2, 2 * r2, 0.0, -360.0); - path.closeSubpath(); - painter->setRenderHint(QPainter::Antialiasing, true); - painter->setBrush(QBrush(m_color)); - painter->setPen(Qt::NoPen); - painter->drawPath(path); - painter->setBrush(Qt::NoBrush); - painter->setPen(Qt::SolidLine); - painter->setRenderHint(QPainter::Antialiasing, false); - - ItemBase::paint(painter, option, widget); -} - -ItemBase *CircleItem::createNew(int size, int x, int y) -{ - return new CircleItem(size, x, y); -} - -//============================================================================// -// SquareItem // -//============================================================================// - -SquareItem::SquareItem(int size, int x, int y) : ItemBase(size, x, y) - , m_image(QPixmap(":/res/boxes/square.jpg")) -{} - -void SquareItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) -{ - int dt = m_startTime.msecsTo(QTime::currentTime()); - QTransform oldTransform = painter->worldTransform(); - int dtMod = dt % 2000; - qreal amp = 0.002 * (dtMod < 1000 ? dtMod : 2000 - dtMod) - 1.0; - - qreal scale = 0.6 + 0.2 * amp * amp; - painter->setWorldTransform(QTransform().rotate(15.0 * amp).scale(scale, scale), true); - - 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); -} |