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-rw-r--r--demos/qt3d/pageflip/pageflip.cpp388
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diff --git a/demos/qt3d/pageflip/pageflip.cpp b/demos/qt3d/pageflip/pageflip.cpp
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--- a/demos/qt3d/pageflip/pageflip.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation ([email protected])
-**
-** This file is part of the QtQuick3D module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QApplication>
-#include <QTimer>
-#include <QMouseEvent>
-#include "qglpainter.h"
-#include "qglabstracteffect.h"
-#include "qgltexture2d.h"
-#include "qglshaderprogrameffect.h"
-#include <QtOpenGL/qglshaderprogram.h>
-#include "pageflipmath_p.h"
-
-class PageFlipGradientEffect;
-
-class PageFlipView : public QGLWidget
-{
- Q_OBJECT
-public:
- PageFlipView(QWidget *parent = 0);
- ~PageFlipView();
-
- void setBlend(bool value) { blend = value; }
- void setVertical(bool value) { vertical = value; }
-
-protected:
- void resizeGL(int width, int height);
- void initializeGL();
- void paintGL();
- void mousePressEvent(QMouseEvent *e);
-
-private slots:
- void animate();
-
-private:
- bool blend;
- bool vertical;
-
- qreal posn; // Position within the animation - 0...1
- QSize pageSize; // Size of a page within the window.
-
- QRect pageRect1;
- QRect pageRect2;
-
- QColor colors[4];
- int colorIndex;
-
- QGLTexture2D textures[4];
-
- QGLTexture2D gradientTexture;
-
- PageFlipMath pageFlipMath;
-
- PageFlipGradientEffect *effect;
-
- void setAlphaValue(QGLPainter *painter, GLfloat value);
-};
-
-class PageFlipGradientEffect : public QGLShaderProgramEffect
-{
-public:
- PageFlipGradientEffect();
- ~PageFlipGradientEffect();
-
- void setAlphaValue(GLfloat value);
-};
-
-PageFlipView::PageFlipView(QWidget *parent)
- : QGLWidget(parent)
-{
- posn = 0.0f;
- blend = false;
- vertical = false;
-
- colors[0] = QColor(0, 192, 192, 255);
- colors[1] = QColor(192, 0, 0, 255);
- colors[2] = QColor(192, 192, 0, 255);
- colors[3] = QColor(128, 128, 0, 255);
- colorIndex = 0;
-
- QTimer *timer = new QTimer(this);
- connect(timer, SIGNAL(timeout()), this, SLOT(animate()));
- timer->start(40);
-
- effect = new PageFlipGradientEffect();
-}
-
-PageFlipView::~PageFlipView()
-{
- delete effect;
-}
-
-void PageFlipView::resizeGL(int width, int height)
-{
- glViewport(0, 0, width, height);
-}
-
-void PageFlipView::initializeGL()
-{
- QGLPainter painter(this);
-
- //QSize size = rect().size();
- //int width = size.width() / 3;
- //int height = (int)(width * 1.414f);
- int width = 227;
- int height = 320;
- pageSize = QSize(width, height);
-
- textures[0].setImage(QImage(QLatin1String(":/qqpage1.png")));
- textures[1].setImage(QImage(QLatin1String(":/qqpage2.png")));
- textures[2].setImage(QImage(QLatin1String(":/qqpage3.png")));
- textures[3].setImage(QImage(QLatin1String(":/qqpage4.png")));
-
- gradientTexture.setImage(QImage(QLatin1String(":/gradient.png")));
-
- if (painter.hasOpenGLFeature(QOpenGLFunctions::BlendColor))
- painter.glBlendColor(0, 0, 0, 0);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- if (painter.hasOpenGLFeature(QOpenGLFunctions::BlendEquation))
- painter.glBlendEquation(GL_FUNC_ADD);
- else if (painter.hasOpenGLFeature(QOpenGLFunctions::BlendEquationSeparate))
- painter.glBlendEquationSeparate(GL_FUNC_ADD, GL_FUNC_ADD);
-
- glEnable(GL_BLEND);
-
- if (vertical)
- pageFlipMath.setStartCorner(PageFlipMath::VerticalBottomRight);
- else
- pageFlipMath.setStartCorner(PageFlipMath::BottomRight);
-}
-
-void PageFlipView::paintGL()
-{
- QGLPainter painter(this);
-
- QRect rect = this->rect();
- int midx = rect.width() / 2;
- int topy = (rect.height() - pageSize.height()) / 2;
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- QMatrix4x4 projm;
- projm.ortho(rect);
- painter.projectionMatrix() = projm;
- painter.modelViewMatrix().setToIdentity();
-
- if (vertical) {
- pageRect2 = QRect(QPoint(midx - pageSize.width() / 2, topy), pageSize);
- pageRect1 = QRect(QPoint(pageRect2.x() - pageSize.width(), topy), pageSize);
- } else {
- pageRect1 = QRect(QPoint(midx - pageSize.width(), topy), pageSize);
- pageRect2 = QRect(QPoint(midx, topy), pageSize);
- }
- pageFlipMath.setPageRect(pageRect2);
- pageFlipMath.setShowPageReverse(false);
- pageFlipMath.compute(posn);
-
- QGLAttributeValue positions
- (2, GL_FLOAT, pageFlipMath.stride(), pageFlipMath.vertexArray());
- QGLAttributeValue texCoords
- (2, GL_FLOAT, pageFlipMath.stride(), pageFlipMath.vertexArray() + 2);
- QGLAttributeValue gradientCoords
- (1, GL_FLOAT, pageFlipMath.stride(), pageFlipMath.vertexArray() + 4);
-
- if (painter.isFixedFunction())
- painter.setStandardEffect(QGL::FlatReplaceTexture2D);
- else
- painter.setUserEffect(effect);
- painter.setColor(colors[colorIndex]);
- painter.glActiveTexture(GL_TEXTURE0);
- textures[colorIndex].bind();
- if (!painter.isFixedFunction()) {
- painter.glActiveTexture(GL_TEXTURE1);
- gradientTexture.bind();
- }
- painter.clearAttributes();
- painter.setVertexAttribute(QGL::Position, positions);
- painter.setVertexAttribute(QGL::TextureCoord0, texCoords);
- painter.setVertexAttribute(QGL::CustomVertex0, gradientCoords);
- setAlphaValue(&painter, 1.0f);
- painter.update();
- pageFlipMath.drawPage(0);
-
- painter.setColor(colors[(colorIndex + 1) % 4]);
- painter.glActiveTexture(GL_TEXTURE0);
- textures[(colorIndex + 1) % 4].bind();
- setAlphaValue(&painter, 1.0f);
- painter.update();
- pageFlipMath.drawPage(1);
-
- painter.setColor(colors[(colorIndex + 2) % 4]);
- if (!pageFlipMath.showPageReverse())
- textures[(colorIndex + 2) % 4].bind();
- if (blend)
- setAlphaValue(&painter, 0.75f);
- else
- setAlphaValue(&painter, 1.0f);
- painter.update();
- pageFlipMath.drawPage(2);
-
- painter.setColor(colors[(colorIndex + 3) % 4]);
- textures[(colorIndex + 3) % 4].bind();
- setAlphaValue(&painter, 1.0f);
- painter.update();
- pageFlipMath.drawPage(3);
-
- glBindTexture(GL_TEXTURE_2D, 0);
- painter.glActiveTexture(GL_TEXTURE1);
- glBindTexture(GL_TEXTURE_2D, 0);
-
- painter.setStandardEffect(QGL::FlatColor);
- painter.clearAttributes();
- painter.setVertexAttribute(QGL::Position, positions);
- painter.setVertexAttribute(QGL::TextureCoord0, texCoords);
- painter.setVertexAttribute(QGL::CustomVertex0, gradientCoords);
- painter.setColor(QColor(0, 0, 0, 255));
- painter.update();
- pageFlipMath.drawOutline(2);
-}
-
-void PageFlipView::mousePressEvent(QMouseEvent *e)
-{
- int x = e->x();
- int y = e->y();
- bool changed = true;
- if (vertical) {
- if (x >= pageRect2.x() && x < (pageRect2.x() + 20) &&
- y >= pageRect2.y() && y < (pageRect2.y() + 20))
- pageFlipMath.setStartCorner(PageFlipMath::VerticalTopLeft);
- else if (x >= pageRect2.x() && x < (pageRect2.x() + 20) &&
- y >= (pageRect2.bottom() - 20) && y <= pageRect2.bottom())
- pageFlipMath.setStartCorner(PageFlipMath::VerticalBottomLeft);
- else if (x >= (pageRect2.right() - 20) && x <= pageRect2.right() &&
- y >= pageRect2.y() && y < (pageRect2.y() + 20))
- pageFlipMath.setStartCorner(PageFlipMath::VerticalTopRight);
- else if (x >= (pageRect2.right() - 20) && x <= pageRect2.right() &&
- y >= (pageRect2.bottom() - 20) && y <= pageRect2.bottom())
- pageFlipMath.setStartCorner(PageFlipMath::VerticalBottomRight);
- else
- changed = false;
- } else {
- if (x >= pageRect1.x() && x < (pageRect1.x() + 20) &&
- y >= pageRect1.y() && y < (pageRect1.y() + 20))
- pageFlipMath.setStartCorner(PageFlipMath::TopLeft);
- else if (x >= pageRect1.x() && x < (pageRect1.x() + 20) &&
- y >= (pageRect1.bottom() - 20) && y <= pageRect1.bottom())
- pageFlipMath.setStartCorner(PageFlipMath::BottomLeft);
- else if (x >= pageRect2.x() && x < (pageRect2.x() + 20) &&
- y >= pageRect2.y() && y < (pageRect2.y() + 20))
- pageFlipMath.setStartCorner(PageFlipMath::TopLeftOnePage);
- else if (x >= pageRect2.x() && x < (pageRect2.x() + 20) &&
- y >= (pageRect2.bottom() - 20) && y <= pageRect2.bottom())
- pageFlipMath.setStartCorner(PageFlipMath::BottomLeftOnePage);
- else if (x >= (pageRect2.right() - 20) && x <= pageRect2.right() &&
- y >= pageRect2.y() && y < (pageRect2.y() + 20))
- pageFlipMath.setStartCorner(PageFlipMath::TopRight);
- else if (x >= (pageRect2.right() - 20) && x <= pageRect2.right() &&
- y >= (pageRect2.bottom() - 20) && y <= pageRect2.bottom())
- pageFlipMath.setStartCorner(PageFlipMath::BottomRight);
- else
- changed = false;
- }
- if (changed)
- posn = 0.0f;
- QGLWidget::mousePressEvent(e);
-}
-
-void PageFlipView::animate()
-{
- posn += 0.04f;
- if (posn >= 1.0f) {
- posn = 0.0f;
- colorIndex = (colorIndex + 2) % 4;
- }
- updateGL();
-}
-
-void PageFlipView::setAlphaValue(QGLPainter *painter, GLfloat value)
-{
- if (!painter->isFixedFunction())
- effect->setAlphaValue(value);
-}
-
-static char const gradientVertexShader[] =
- "attribute highp vec4 qt_Vertex;\n"
- "attribute highp vec4 qt_MultiTexCoord0;\n"
- "attribute highp float qt_Custom0;\n"
- "uniform mediump mat4 qt_ModelViewProjectionMatrix;\n"
- "varying highp vec4 qt_TexCoord0;\n"
- "varying highp float qGradCtrl;\n"
- "void main(void)\n"
- "{\n"
- " gl_Position = qt_ModelViewProjectionMatrix * qt_Vertex;\n"
- " qt_TexCoord0 = qt_MultiTexCoord0;\n"
- " qGradCtrl = qt_Custom0;\n"
- "}\n";
-
-static char const gradientFragmentShader[] =
- "uniform sampler2D qt_Texture0;\n"
- "uniform sampler2D qt_Texture1;\n"
- "uniform mediump float alphaValue;\n"
- "varying highp vec4 qt_TexCoord0;\n"
- "varying highp float qGradCtrl;\n"
- "void main(void)\n"
- "{\n"
- " mediump vec4 col = texture2D(qt_Texture0, qt_TexCoord0.st);\n"
- " mediump vec4 gradcol = texture2D(qt_Texture1, vec2(qGradCtrl, qt_TexCoord0.t));\n"
- " gl_FragColor = vec4((col * gradcol).xyz, alphaValue);\n"
- "}\n";
-
-PageFlipGradientEffect::PageFlipGradientEffect()
-{
- setVertexShader(gradientVertexShader);
- setFragmentShader(gradientFragmentShader);
-}
-
-PageFlipGradientEffect::~PageFlipGradientEffect()
-{
-}
-
-void PageFlipGradientEffect::setAlphaValue(GLfloat value)
-{
- program()->setUniformValue("alphaValue", value);
-}
-
-int main(int argc, char *argv[])
-{
- QApplication app(argc, argv);
- PageFlipView view;
- if (QApplication::arguments().contains(QLatin1String("-blend")))
- view.setBlend(true);
- if (QApplication::arguments().contains(QLatin1String("-vertical")))
- view.setVertical(true);
-
-
-#ifdef Q_OS_SYMBIAN
- view.setAttribute(Qt::WA_LockLandscapeOrientation, true);
- view.showFullScreen();
-#else
- if (QApplication::arguments().contains(QLatin1String("-maximize")))
- view.showMaximized();
- else if (QApplication::arguments().contains(QLatin1String("-fullscreen")))
- view.showFullScreen();
- else
- view.show();
-#endif
-
- return app.exec();
-}
-
-#include "pageflip.moc"
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