qdirectfbpixmap.cpp File Reference

#include "qdirectfbpixmap.h"
#include "qdirectfbscreen.h"
#include "qdirectfbpaintengine.h"
#include <QtGui/qbitmap.h>
#include <QtCore/qfile.h>
#include <directfb.h>

Go to the source code of this file.

Classes
struct	QDirectFBInterfaceCleanupHandler< T >
class	QDirectFBPointer< T >

Functions
static bool	checkForAlphaPixels (const QImage &img)
static bool	isOpaqueFormat (QImage::Format format)
Q_GUI_EXPORT IDirectFBSurface *	qt_directfb_surface_for_pixmap (const QPixmap &pixmap)

Variables
static int	global_ser_no = 0

Function Documentation

checkForAlphaPixels()

static bool checkForAlphaPixels ( const QImage &  img )

static

Definition at line 96 of file qdirectfbpixmap.cpp.

Referenced by QDirectFBPixmapData::hasAlphaChannel().

{
    const uchar *bits = img.bits();
    const int bytes_per_line = img.bytesPerLine();
    const uchar *end_bits = bits + bytes_per_line;
    const int width = img.width();
    const int height = img.height();
    switch (img.format()) {
    case QImage::Format_Indexed8:
        return img.hasAlphaChannel();
    case QImage::Format_ARGB32:
    case QImage::Format_ARGB32_Premultiplied:
        for (int y=0; y<height; ++y) {
            for (int x=0; x<width; ++x) {
                if ((((uint *)bits)[x] & 0xff000000) != 0xff000000) {
                    return true;
                }
            }
            bits += bytes_per_line;
        }
        break;

    case QImage::Format_ARGB8555_Premultiplied:
    case QImage::Format_ARGB8565_Premultiplied:
        for (int y=0; y<height; ++y) {
            while (bits < end_bits) {
                if (bits[0] != 0) {
                    return true;
                }
                bits += 3;
            }
            bits = end_bits;
            end_bits += bytes_per_line;
        }
        break;

    case QImage::Format_ARGB6666_Premultiplied:
        for (int y=0; y<height; ++y) {
            while (bits < end_bits) {
                if ((bits[0] & 0xfc) != 0) {
                    return true;
                }
                bits += 3;
            }
            bits = end_bits;
            end_bits += bytes_per_line;
        }
        break;

    case QImage::Format_ARGB4444_Premultiplied:
        for (int y=0; y<height; ++y) {
            while (bits < end_bits) {
                if ((bits[0] & 0xf0) != 0) {
                    return true;
                }
                bits += 2;
            }
            bits = end_bits;
            end_bits += bytes_per_line;
        }
        break;

    default:
        break;
    }

    return false;
}

isOpaqueFormat()

static bool isOpaqueFormat ( QImage::Format  format )

inlinestatic

Definition at line 386 of file qdirectfbpixmap.cpp.

Referenced by QDirectFBPixmapData::fill().

{
    switch (format) {
    case QImage::Format_RGB32:
    case QImage::Format_RGB16:
    case QImage::Format_RGB666:
    case QImage::Format_RGB555:
    case QImage::Format_RGB888:
    case QImage::Format_RGB444:
        return true;
    default:
        break;
    }
    return false;
}

qt_directfb_surface_for_pixmap()

Q_GUI_EXPORT IDirectFBSurface* qt_directfb_surface_for_pixmap

(

const QPixmap &

pixmap

)

Definition at line 577 of file qdirectfbpixmap.cpp.

{
    const QPixmapData *data = pixmap.pixmapData();
    if (!data || data->classId() != QPixmapData::DirectFBClass)
        return 0;
    const QDirectFBPixmapData *dfbData = static_cast<const QDirectFBPixmapData*>(data);
    return dfbData->directFBSurface();
}

Variable Documentation

global_ser_no

int global_ser_no = 0

static

Definition at line 56 of file qdirectfbpixmap.cpp.

Referenced by QDirectFBPixmapData::copy(), QDirectFBPixmapData::fill(), QDirectFBPixmapData::fromDataBufferDescription(), QDirectFBPixmapData::fromImage(), QDirectFBPixmapData::resize(), and QDirectFBPixmapData::transformed().