composition.cpp

奇趣公司比较新的qt/emd版本

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#include "composition.h"
#include <QBoxLayout>
#include <QRadioButton>
#include <QTimer>
#include <QDateTime>
#include <QSlider>
#include <QMouseEvent>
#include <math.h>

CompositionWidget::CompositionWidget(QWidget *parent)
    : QWidget(parent)
{
    CompositionRenderer *view = new CompositionRenderer(this);

    QGroupBox *mainGroup = new QGroupBox(parent);
    mainGroup->setAttribute(Qt::WA_ContentsPropagated);
    mainGroup->setTitle("Composition Modes");

    QGroupBox *modesGroup = new QGroupBox(mainGroup);
    modesGroup->setAttribute(Qt::WA_ContentsPropagated);
    modesGroup->setTitle("Mode");

    rbClear = new QRadioButton("Clear", modesGroup);
    connect(rbClear, SIGNAL(clicked()), view, SLOT(setClearMode()));
    rbSource = new QRadioButton("Source", modesGroup);
    connect(rbSource, SIGNAL(clicked()), view, SLOT(setSourceMode()));
    rbDest = new QRadioButton("Destination", modesGroup);
    connect(rbDest, SIGNAL(clicked()), view, SLOT(setDestMode()));
    rbSourceOver = new QRadioButton("Source Over", modesGroup);
    connect(rbSourceOver, SIGNAL(clicked()), view, SLOT(setSourceOverMode()));
    rbDestOver = new QRadioButton("Destination Over", modesGroup);
    connect(rbDestOver, SIGNAL(clicked()), view, SLOT(setDestOverMode()));
    rbSourceIn = new QRadioButton("Source In", modesGroup);
    connect(rbSourceIn, SIGNAL(clicked()), view, SLOT(setSourceInMode()));
    rbDestIn = new QRadioButton("Dest In", modesGroup);
    connect(rbDestIn, SIGNAL(clicked()), view, SLOT(setDestInMode()));
    rbSourceOut = new QRadioButton("Source Out", modesGroup);
    connect(rbSourceOut, SIGNAL(clicked()), view, SLOT(setSourceOutMode()));
    rbDestOut = new QRadioButton("Dest Out", modesGroup);
    connect(rbDestOut, SIGNAL(clicked()), view, SLOT(setDestOutMode()));
    rbSourceAtop = new QRadioButton("Source Atop", modesGroup);
    connect(rbSourceAtop, SIGNAL(clicked()), view, SLOT(setSourceAtopMode()));
    rbDestAtop = new QRadioButton("Dest Atop", modesGroup);
    connect(rbDestAtop, SIGNAL(clicked()), view, SLOT(setDestAtopMode()));
    rbXor = new QRadioButton("Xor", modesGroup);
    connect(rbXor, SIGNAL(clicked()), view, SLOT(setXorMode()));

    QGroupBox *circleColorGroup = new QGroupBox(mainGroup);
    circleColorGroup->setAttribute(Qt::WA_ContentsPropagated);
    circleColorGroup->setTitle("Circle color");
    QSlider *circleColorSlider = new QSlider(Qt::Horizontal, circleColorGroup);
    circleColorSlider->setRange(0, 359);
    circleColorSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
    connect(circleColorSlider, SIGNAL(valueChanged(int)), view, SLOT(setCircleColor(int)));

    QGroupBox *circleAlphaGroup = new QGroupBox(mainGroup);
    circleAlphaGroup->setAttribute(Qt::WA_ContentsPropagated);
    circleAlphaGroup->setTitle("Circle alpha");
    QSlider *circleAlphaSlider = new QSlider(Qt::Horizontal, circleAlphaGroup);
    circleAlphaSlider->setRange(0, 255);
    circleAlphaSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
    connect(circleAlphaSlider, SIGNAL(valueChanged(int)), view, SLOT(setCircleAlpha(int)));

    QPushButton *showSourceButton = new QPushButton(mainGroup);
    showSourceButton->setText("Show Source");
#ifdef QT_OPENGL_SUPPORT
    QPushButton *enableOpenGLButton = new QPushButton(mainGroup);
    enableOpenGLButton->setText("Use OpenGL");
    enableOpenGLButton->setCheckable(true);
    enableOpenGLButton->setChecked(view->usesOpenGL());

    if (!QGLFormat::hasOpenGL() || !QGLPixelBuffer::hasOpenGLPbuffers())
        enableOpenGLButton->hide();
#endif
    QPushButton *whatsThisButton = new QPushButton(mainGroup);
    whatsThisButton->setText("What's This?");
    whatsThisButton->setCheckable(true);

    QPushButton *animateButton = new QPushButton(mainGroup);
    animateButton->setText("Animated");
    animateButton->setCheckable(true);
    animateButton->setChecked(true);

    QHBoxLayout *viewLayout = new QHBoxLayout(this);
    viewLayout->addWidget(view);
    viewLayout->addWidget(mainGroup);

    QVBoxLayout *mainGroupLayout = new QVBoxLayout(mainGroup);
    mainGroupLayout->addWidget(circleColorGroup);
    mainGroupLayout->addWidget(circleAlphaGroup);
    mainGroupLayout->addWidget(modesGroup);
    mainGroupLayout->addStretch();
    mainGroupLayout->addWidget(animateButton);
    mainGroupLayout->addWidget(whatsThisButton);
    mainGroupLayout->addWidget(showSourceButton);
#ifdef QT_OPENGL_SUPPORT
    mainGroupLayout->addWidget(enableOpenGLButton);
#endif

    QVBoxLayout *modesLayout = new QVBoxLayout(modesGroup);
    modesLayout->addWidget(rbClear);
    modesLayout->addWidget(rbSource);
    modesLayout->addWidget(rbDest);
    modesLayout->addWidget(rbSourceOver);
    modesLayout->addWidget(rbDestOver);
    modesLayout->addWidget(rbSourceIn);
    modesLayout->addWidget(rbDestIn);
    modesLayout->addWidget(rbSourceOut);
    modesLayout->addWidget(rbDestOut);
    modesLayout->addWidget(rbSourceAtop);
    modesLayout->addWidget(rbDestAtop);
    modesLayout->addWidget(rbXor);

    QVBoxLayout *circleColorLayout = new QVBoxLayout(circleColorGroup);
    circleColorLayout->addWidget(circleColorSlider);

    QVBoxLayout *circleAlphaLayout = new QVBoxLayout(circleAlphaGroup);
    circleAlphaLayout->addWidget(circleAlphaSlider);

    view->loadDescription(":res/composition.html");
    view->loadSourceFile(":res/composition.cpp");

    connect(whatsThisButton, SIGNAL(clicked(bool)), view, SLOT(setDescriptionEnabled(bool)));
    connect(view, SIGNAL(descriptionEnabledChanged(bool)), whatsThisButton, SLOT(setChecked(bool)));
    connect(showSourceButton, SIGNAL(clicked()), view, SLOT(showSource()));
#ifdef QT_OPENGL_SUPPORT
    connect(enableOpenGLButton, SIGNAL(clicked(bool)), view, SLOT(enableOpenGL(bool)));
#endif
    connect(animateButton, SIGNAL(toggled(bool)), view, SLOT(setAnimationEnabled(bool)));

    circleColorSlider->setValue(270);
    circleAlphaSlider->setValue(200);
    rbSourceOut->animateClick();

    setWindowTitle(tr("Composition Modes"));
}


void CompositionWidget::nextMode()
{
    /*
      if (!m_animation_enabled)
      return;
      if (rbClear->isChecked()) rbSource->animateClick();
      if (rbSource->isChecked()) rbDest->animateClick();
      if (rbDest->isChecked()) rbSourceOver->animateClick();
      if (rbSourceOver->isChecked()) rbDestOver->animateClick();
      if (rbDestOver->isChecked()) rbSourceIn->animateClick();
      if (rbSourceIn->isChecked()) rbDestIn->animateClick();
      if (rbDestIn->isChecked()) rbSourceOut->animateClick();
      if (rbSourceOut->isChecked()) rbDestOut->animateClick();
      if (rbDestOut->isChecked()) rbSourceAtop->animateClick();
      if (rbSourceAtop->isChecked()) rbDestAtop->animateClick();
      if (rbDestAtop->isChecked()) rbXor->animateClick();
      if (rbXor->isChecked()) rbClear->animateClick();
    */
}

CompositionRenderer::CompositionRenderer(QWidget *parent)
    : ArthurFrame(parent)
{
    m_animation_enabled = true;
    m_image = QImage(":res/flower_2.png");
    m_circle_alpha = 127;
    m_circle_hue = 255;
    m_current_object = NoObject;
    m_composition_mode = QPainter::CompositionMode_SourceOut;

    m_circle_pos = QPoint(200, 100);

    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
#ifdef QT_OPENGL_SUPPORT
    m_pbuffer = 0;
    m_pbuffer_size = 1024;
#endif
}

QRectF rectangle_around(const QPointF &p, const QSizeF &size = QSize(250, 200))
{
    QRectF rect(p, size);