C++ (Cpp) invalidateBackingStore示例

示例#1

文件： qwt_plot_canvas.cpp 项目： Alex-Rongzhen-Huang/OpenPilot

/*!
   Invalidate the paint cache and repaint the canvas
   \sa invalidatePaintCache()
*/
void QwtPlotCanvas::replot()
{
    invalidateBackingStore();

    if ( testPaintAttribute( QwtPlotCanvas::ImmediatePaint ) )
        repaint( contentsRect() );
    else
        update( contentsRect() );
}

示例#2

文件： qwt_plot_abstract_canvas.cpp 项目： Au-Zone/qwt

/*!
   Invalidate the paint cache and repaint the canvas
   \sa invalidatePaintCache()
*/
void QwtPlotAbstractGLCanvas::replot()
{
    invalidateBackingStore();
    
    QWidget *w = canvasWidget();
    if ( testPaintAttribute( QwtPlotAbstractGLCanvas::ImmediatePaint ) )
        w->repaint( w->contentsRect() );
    else
        w->update( w->contentsRect() );
}

示例#3

void ChunkedUpdateDrawingAreaProxy::didSetSize(UpdateChunk* updateChunk)
{
    ASSERT(m_isWaitingForDidSetFrameNotification);
    m_isWaitingForDidSetFrameNotification = false;

    IntSize viewSize = updateChunk->rect().size();

    if (viewSize != m_lastSetViewSize)
        setSize(m_lastSetViewSize);

    invalidateBackingStore();
    drawUpdateChunkIntoBackingStore(updateChunk);

    WebPageProxy* page = this->page();
    page->process()->responsivenessTimer()->stop();
}

示例#4

文件： qwt_plot_glcanvas.cpp 项目： XelaRellum/qwt

void QwtPlotGLCanvas::resizeGL( int, int )
{
    invalidateBackingStore();
}

示例#5

文件： qwt_plot_glcanvas.cpp 项目： XelaRellum/qwt

void QwtPlotGLCanvas::paintGL()
{
    const bool hasFocusIndicator =
        hasFocus() && focusIndicator() == CanvasFocusIndicator;

    QPainter painter;

#if QT_VERSION < 0x040600
    painter.begin( this );
    draw( &painter );
#else
    if ( testPaintAttribute( QwtPlotGLCanvas::BackingStore ) )
    {
        if ( d_data->fbo == NULL || d_data->fbo->size() != size() )
        {
            invalidateBackingStore();

            const int numSamples = 16;

            QGLFramebufferObjectFormat format;
            format.setSamples( numSamples );
            format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);

            QGLFramebufferObject fbo( size(), format );

            QPainter fboPainter( &fbo );
            draw( &fboPainter);
            fboPainter.end();

            d_data->fbo = new QGLFramebufferObject( size() );

            QRect rect(0, 0, width(), height());
            QGLFramebufferObject::blitFramebuffer(d_data->fbo, rect, &fbo, rect);
        }

        // drawTexture( QRectF( -1.0, 1.0, 2.0, -2.0 ), d_data->fbo->texture() );

        if ( hasFocusIndicator )
            painter.begin( this );
        
        glBindTexture(GL_TEXTURE_2D, d_data->fbo->texture());
        
        glEnable(GL_TEXTURE_2D);
        
        glBegin(GL_QUADS);
        
        glTexCoord2f(0.0f, 0.0f);
        glVertex2f(-1.0f, -1.0f);
        glTexCoord2f(1.0f, 0.0f);
        glVertex2f( 1.0f, -1.0f);
        glTexCoord2f(1.0f, 1.0f);
        glVertex2f( 1.0f,  1.0f);
        glTexCoord2f(0.0f, 1.0f);
        glVertex2f(-1.0f,  1.0f);
        
        glEnd();
    }
    else
    {
        painter.begin( this );
        draw( &painter );
    }
#endif

    if ( hasFocus() && focusIndicator() == CanvasFocusIndicator )
        drawFocusIndicator( &painter );
}