source: trunk/src/gui/painting/qwindowsurface_raster.cpp@ 938

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#include <qdebug.h>

#include <qglobal.h> // for Q_WS_WIN define (non-PCH)
#ifdef Q_WS_WIN
#include <qlibrary.h>
#include <qt_windows.h>
#endif

#include <QtGui/qpaintdevice.h>
#include <QtGui/qwidget.h>

#include "private/qwindowsurface_raster_p.h"
#include "private/qnativeimage_p.h"
#include "private/qwidget_p.h"

#ifdef Q_WS_X11
#include "private/qpixmap_x11_p.h"
#include "private/qt_x11_p.h"
#include "private/qwidget_p.h"
#include "qx11info_x11.h"
#endif
#include "private/qdrawhelper_p.h"

#ifdef Q_WS_MAC
#include <private/qt_cocoa_helpers_mac_p.h>
#endif

#if defined(Q_WS_PM) && defined(QT_LOG_BLITSPEED)
#include <InnotekLIBC/FastInfoBlocks.h>
#endif

#if defined(Q_WS_PM)
LONG APIENTRY GpiQueryYInversion(HPS hps);
BOOL APIENTRY GpiEnableYInversion(HPS hps, LONG lHeight);
#define QT_BITMAP_MIRROR 3  // 1 = QImage.mirrored()
                            // 2 = GpiEnableYInversion()
                            // 3 = GPI Matrix (seems to be the fastest)
#endif

QT_BEGIN_NAMESPACE

#if defined(Q_WS_PM) && defined(QT_LOG_BLITSPEED)
unsigned long long qt_total_blit_ms = 0;
unsigned long long qt_total_blit_pixels = 0;
#endif

class QRasterWindowSurfacePrivate
{
public:
    QNativeImage *image;

#ifdef Q_WS_X11
    GC gc;
#ifndef QT_NO_XRENDER
    uint translucentBackground : 1;
#endif
#endif
    uint inSetGeometry : 1;
};

QRasterWindowSurface::QRasterWindowSurface(QWidget *window)
    : QWindowSurface(window), d_ptr(new QRasterWindowSurfacePrivate)
{
#ifdef Q_WS_X11
    d_ptr->gc = XCreateGC(X11->display, window->handle(), 0, 0);
#ifndef QT_NO_XRENDER
    d_ptr->translucentBackground = X11->use_xrender
        && window->x11Info().depth() == 32;
#endif
#endif
    d_ptr->image = 0;
    d_ptr->inSetGeometry = false;
    setStaticContentsSupport(true);
}


QRasterWindowSurface::~QRasterWindowSurface()
{
#ifdef Q_WS_X11
    XFreeGC(X11->display, d_ptr->gc);
#endif
    if (d_ptr->image)
        delete d_ptr->image;
}


QPaintDevice *QRasterWindowSurface::paintDevice()
{
    return &d_ptr->image->image;
}

void QRasterWindowSurface::beginPaint(const QRegion &rgn)
{
#if (defined(Q_WS_X11) && !defined(QT_NO_XRENDER)) || (defined(Q_WS_WIN) && !defined(Q_WS_WINCE))
    if (!qt_widget_private(window())->isOpaque && window()->testAttribute(Qt::WA_TranslucentBackground)) {
#if defined(Q_WS_WIN) && !defined(Q_WS_WINCE)
        if (d_ptr->image->image.format() != QImage::Format_ARGB32_Premultiplied)
            prepareBuffer(QImage::Format_ARGB32_Premultiplied, window());
#endif
        QPainter p(&d_ptr->image->image);
        p.setCompositionMode(QPainter::CompositionMode_Source);
        const QVector<QRect> rects = rgn.rects();
        const QColor blank = Qt::transparent;
        for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
            p.fillRect(*it, blank);
        }
    }
#else
    Q_UNUSED(rgn);
#endif
}

void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
    Q_D(QRasterWindowSurface);

    // Not ready for painting yet, bail out. This can happen in
    // QWidget::create_sys()
    if (!d->image || rgn.rectCount() == 0)
        return;

#ifdef Q_WS_WIN
    QRect br = rgn.boundingRect();