QNativeImage Class Reference

#include <qnativeimage_p.h>

Public Functions
int	height () const
	QNativeImage (int width, int height, QImage::Format format, bool isTextBuffer=false, QWidget *widget=0)
int	width () const
	~QNativeImage ()

Static Public Functions
static QImage::Format	systemFormat ()

Public Variables
HBITMAP	bitmap
HDC	hdc
QImage	image
HBITMAP	null_bitmap

Detailed Description

Definition at line 73 of file qnativeimage_p.h.

Constructors and Destructors

QNativeImage()

QNativeImage::QNativeImage	(	int	width,
		int	height,
		QImage::Format	format,
		bool	isTextBuffer = false,
		QWidget *	widget = 0
	)

Definition at line 73 of file qnativeimage.cpp.

Referenced by systemFormat().

{
#ifndef Q_WS_WINCE
    Q_UNUSED(isTextBuffer);
#endif
    BITMAPINFO_MASK bmi;
    memset(&bmi, 0, sizeof(bmi));
    bmi.bmiHeader.biSize        = sizeof(BITMAPINFOHEADER);
    bmi.bmiHeader.biWidth       = width;
    bmi.bmiHeader.biHeight      = -height;
    bmi.bmiHeader.biPlanes      = 1;
    bmi.bmiHeader.biSizeImage   = 0;

    if (format == QImage::Format_RGB16) {
        bmi.bmiHeader.biBitCount = 16;
#ifdef Q_WS_WINCE
        if (isTextBuffer) {
            bmi.bmiHeader.biCompression = BI_RGB;
            bmi.redMask = 0;
            bmi.greenMask = 0;
            bmi.blueMask = 0;
        } else
#endif
        {
            bmi.bmiHeader.biCompression = BI_BITFIELDS;
            bmi.redMask = 0xF800;
            bmi.greenMask = 0x07E0;
            bmi.blueMask = 0x001F;
        }
    } else {
        bmi.bmiHeader.biBitCount    = 32;
        bmi.bmiHeader.biCompression = BI_RGB;
        bmi.redMask = 0;
        bmi.greenMask = 0;
        bmi.blueMask = 0;
    }

    HDC display_dc = GetDC(0);
    hdc = CreateCompatibleDC(display_dc);
    ReleaseDC(0, display_dc);
    Q_ASSERT(hdc);

    uchar *bits = 0;
    bitmap = CreateDIBSection(hdc, reinterpret_cast<BITMAPINFO *>(&bmi), DIB_RGB_COLORS, (void**) &bits, 0, 0);
    Q_ASSERT(bitmap);
    Q_ASSERT(bits);

    null_bitmap = (HBITMAP)SelectObject(hdc, bitmap);
    image = QImage(bits, width, height, format);

    Q_ASSERT(image.paintEngine()->type() == QPaintEngine::Raster);
    static_cast<QRasterPaintEngine *>(image.paintEngine())->setDC(hdc);

#ifndef Q_WS_WINCE
    GdiFlush();
#endif
}

~QNativeImage()

QNativeImage::~QNativeImage

(

)

Definition at line 131 of file qnativeimage.cpp.

Referenced by systemFormat().

{
    if (bitmap || hdc) {
        Q_ASSERT(hdc);
        Q_ASSERT(bitmap);
        if (null_bitmap)
            SelectObject(hdc, null_bitmap);
        DeleteDC(hdc);
        DeleteObject(bitmap);
    }
}

Functions

height()

int QNativeImage::height ( ) const

inline

Definition at line 105 of file qnativeimage_p.h.

Referenced by QFontEngineWin::alphaMapForGlyph(), QFontEngineWin::alphaRGBMapForGlyph(), QNativeImage(), and systemFormat().

{ return image.height(); }

systemFormat()

QImage::Format QNativeImage::systemFormat ( )

static

Definition at line 143 of file qnativeimage.cpp.

Referenced by QFontEngineWin::alphaMapForGlyph(), QRasterPixmapData::createPixmapForImage(), QFontEngineWin::drawGDIGlyph(), qcolorForThemeTextColor(), QRasterPixmapData::resize(), and QRasterWindowSurface::setGeometry().

{
    if (QColormap::instance().depth() == 16)
        return QImage::Format_RGB16;
    return QImage::Format_RGB32;
}

width()

int QNativeImage::width ( ) const

inline

Definition at line 104 of file qnativeimage_p.h.

Referenced by QFontEngineWin::alphaMapForGlyph(), QFontEngineWin::alphaRGBMapForGlyph(), QNativeImage(), and systemFormat().

{ return image.width(); }

Properties

bitmap

HBITMAP QNativeImage::bitmap

Definition at line 88 of file qnativeimage_p.h.

Referenced by QNativeImage(), and ~QNativeImage().

hdc

HDC QNativeImage::hdc

Definition at line 87 of file qnativeimage_p.h.

Referenced by QFontEngineWin::drawGDIGlyph(), QNativeImage(), and ~QNativeImage().

image

QImage QNativeImage::image

Definition at line 82 of file qnativeimage_p.h.

Referenced by QFontEngineWin::alphaMapForGlyph(), QFontEngineWin::alphaRGBMapForGlyph(), QRasterWindowSurface::beginPaint(), QFontEngineWin::drawGDIGlyph(), QRasterWindowSurface::flush(), height(), QRasterWindowSurface::paintDevice(), QRasterWindowSurface::prepareBuffer(), qcolorForThemeTextColor(), QNativeImage(), systemFormat(), and width().

null_bitmap

HBITMAP QNativeImage::null_bitmap

Definition at line 89 of file qnativeimage_p.h.

Referenced by QNativeImage(), and ~QNativeImage().

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The documentation for this class was generated from the following files:

• /src/gui/image/qnativeimage_p.h
• /src/gui/image/qnativeimage.cpp