C++ (Cpp) createPixmapForImage示例

示例#1

文件： qpixmapdata_gl.cpp 项目： RS102839/qt

bool QGLPixmapData::fromData(const uchar *buffer, uint len, const char *format,
                             Qt::ImageConversionFlags flags)
{
    bool alpha;
    const char *buf = reinterpret_cast<const char *>(buffer);
    if (m_texture.canBindCompressedTexture(buf, int(len), format, &alpha)) {
        resize(0, 0);
        QGLShareContextScope ctx(qt_gl_share_context());
        QSize size = m_texture.bindCompressedTexture(buf, int(len), format);
        if (!size.isEmpty()) {
            w = size.width();
            h = size.height();
            is_null = false;
            d = 32;
            m_hasAlpha = alpha;
            m_source = QImage();
            m_dirty = isValid();
            return true;
        }
    }

    QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len);
    QBuffer b(&a);
    b.open(QIODevice::ReadOnly);
    QImage image = QImageReader(&b, format).read();
    if (image.isNull())
        return false;

    createPixmapForImage(image, flags, true);

    return !isNull();
}

示例#2

文件： qpixmap_raster.cpp 项目： CodeDJ/qt5-hidpi

void QRasterPlatformPixmap::fromImage(const QImage &sourceImage,
                                  Qt::ImageConversionFlags flags)
{
    Q_UNUSED(flags);
    QImage image = sourceImage;
    createPixmapForImage(image, flags, /* inplace = */false);
}

示例#3

文件： qpixmapdata_vg.cpp 项目： Marforius/qt

void QVGPixmapData::fromImage(const QImage &image, Qt::ImageConversionFlags flags)
{
    if (image.isNull())
        return;

    QImage img = image;
    createPixmapForImage(img, flags, false);
}

示例#4

文件： qpixmapdata_gl.cpp 项目： RS102839/qt

void QGLPixmapData::fromImageReader(QImageReader *imageReader,
                                 Qt::ImageConversionFlags flags)
{
    QImage image = imageReader->read();
    if (image.isNull())
        return;

    createPixmapForImage(image, flags, true);
}

示例#5

文件： qpixmap_raster.cpp 项目： 3163504123/phantomjs

void QRasterPlatformPixmap::fromImageReader(QImageReader *imageReader,
                                        Qt::ImageConversionFlags flags)
{
    Q_UNUSED(flags);
    QImage image = imageReader->read();
    if (image.isNull())
        return;

    createPixmapForImage(image, flags, /* inplace = */true);
}

示例#6

文件： qpixmapdata_vg.cpp 项目： Marforius/qt

bool QVGPixmapData::fromFile(const QString &filename, const char *format,
                          Qt::ImageConversionFlags flags)
{
    QImage image = QImageReader(filename, format).read();
    if (image.isNull())
        return false;

    createPixmapForImage(image, flags, true);

    return !isNull();
}

示例#7

文件： qpixmap_raster.cpp 项目： 3163504123/phantomjs

bool QRasterPlatformPixmap::fromData(const uchar *buffer, uint len, const char *format,
                      Qt::ImageConversionFlags flags)
{
    QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len);
    QBuffer b(&a);
    b.open(QIODevice::ReadOnly);
    QImage image = QImageReader(&b, format).read();
    if (image.isNull())
        return false;

    createPixmapForImage(image, flags, /* inplace = */true);
    return !isNull();
}

示例#8

文件： qpixmapdata_gl.cpp 项目： RS102839/qt

bool QGLPixmapData::fromFile(const QString &filename, const char *format,
                             Qt::ImageConversionFlags flags)
{
    if (pixelType() == QPixmapData::BitmapType)
        return QPixmapData::fromFile(filename, format, flags);
    QFile file(filename);
    if (file.open(QIODevice::ReadOnly)) {
        QByteArray data = file.peek(64);
        bool alpha;
        if (m_texture.canBindCompressedTexture
                (data.constData(), data.size(), format, &alpha)) {
            resize(0, 0);
            data = file.readAll();
            file.close();
            QGLShareContextScope ctx(qt_gl_share_context());
            QSize size = m_texture.bindCompressedTexture
                (data.constData(), data.size(), format);
            if (!size.isEmpty()) {
                w = size.width();
                h = size.height();
                is_null = false;
                d = 32;
                m_hasAlpha = alpha;
                m_source = QImage();
                m_dirty = isValid();
                return true;
            }
            return false;
        }
    }

    QImage image = QImageReader(filename, format).read();
    if (image.isNull())
        return false;

    createPixmapForImage(image, flags, true);

    return !isNull();
}

示例#9

文件： qpixmapdata_gl.cpp 项目： RS102839/qt

void QGLPixmapData::fromImage(const QImage &image,
                              Qt::ImageConversionFlags flags)
{
    QImage img = image;
    createPixmapForImage(img, flags, false);
}

示例#10

文件： qpixmap_raster.cpp 项目： 3163504123/phantomjs

void QRasterPlatformPixmap::fromImageInPlace(QImage &sourceImage,
                                             Qt::ImageConversionFlags flags)
{
    createPixmapForImage(sourceImage, flags, /* inplace = */true);
}