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generated by cgit v0.12 at 2025-01-18 23:02:52 (GMT)
> #include <qdebug.h> #include "qnativeimage_p.h" #include "qcolormap.h" #include "private/qpaintengine_raster_p.h" #if defined(Q_WS_X11) && !defined(QT_NO_MITSHM) #include <qx11info_x11.h> #include <sys/ipc.h> #include <sys/shm.h> #include <qwidget.h> #endif #ifdef Q_WS_MAC #include <private/qpaintengine_mac_p.h> #endif QT_BEGIN_NAMESPACE #ifdef Q_WS_WIN typedef struct { BITMAPINFOHEADER bmiHeader; DWORD redMask; DWORD greenMask; DWORD blueMask; } BITMAPINFO_MASK; QNativeImage::QNativeImage(int width, int height, QImage::Format format, bool isTextBuffer, QWidget *) { #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() { if (bitmap || hdc) { Q_ASSERT(hdc); Q_ASSERT(bitmap); if (null_bitmap) SelectObject(hdc, null_bitmap); DeleteDC(hdc); DeleteObject(bitmap); } } QImage::Format QNativeImage::systemFormat() { if (QColormap::instance().depth() == 16) return QImage::Format_RGB16; return QImage::Format_RGB32; } #elif defined(Q_WS_X11) && !defined(QT_NO_MITSHM) QNativeImage::QNativeImage(int width, int height, QImage::Format format,bool /* isTextBuffer */, QWidget *widget) : xshmimg(0), xshmpm(0) { if (!X11->use_mitshm) { image = QImage(width, height, format); // follow good coding practice and set xshminfo attributes, though values not used in this case xshminfo.readOnly = true; xshminfo.shmaddr = 0; xshminfo.shmid = 0; xshminfo.shmseg = 0; return; } QX11Info info = widget->x11Info(); int dd = info.depth(); Visual *vis = (Visual*) info.visual(); xshmimg = XShmCreateImage(X11->display, vis, dd, ZPixmap, 0, &xshminfo, width, height); if (!xshmimg) { qWarning("QNativeImage: Unable to create shared XImage."); return; } bool ok; xshminfo.shmid = shmget(IPC_PRIVATE, xshmimg->bytes_per_line * xshmimg->height, IPC_CREAT | 0777); ok = xshminfo.shmid != -1; if (ok) { xshmimg->data = (char*)shmat(xshminfo.shmid, 0, 0); xshminfo.shmaddr = xshmimg->data; ok = (xshminfo.shmaddr != (char*)-1); if (ok) image = QImage((uchar *)xshmimg->data, width, height, systemFormat()); } xshminfo.readOnly = false; if (ok) ok = XShmAttach(X11->display, &xshminfo); if (!ok) { qWarning() << "QNativeImage: Unable to attach to shared memory segment."; if (xshmimg->data) { free(xshmimg->data); xshmimg->data = 0; } XDestroyImage(xshmimg); xshmimg = 0; if (xshminfo.shmaddr) shmdt(xshminfo.shmaddr); if (xshminfo.shmid != -1) shmctl(xshminfo.shmid, IPC_RMID, 0); return; } xshmpm = XShmCreatePixmap(X11->display, DefaultRootWindow(X11->display), xshmimg->data, &xshminfo, width, height, dd); if (!xshmpm) { qWarning() << "QNativeImage: Unable to create shared Pixmap."; } } QNativeImage::~QNativeImage() { if (!xshmimg) return; if (xshmpm) { XFreePixmap(X11->display, xshmpm); xshmpm = 0; } XShmDetach(X11->display, &xshminfo); xshmimg->data = 0; XDestroyImage(xshmimg); xshmimg = 0; shmdt(xshminfo.shmaddr); shmctl(xshminfo.shmid, IPC_RMID, 0); } QImage::Format QNativeImage::systemFormat() { if (QX11Info::appDepth() == 16) return QImage::Format_RGB16; return QImage::Format_RGB32; } #elif defined(Q_WS_MAC) QNativeImage::QNativeImage(int width, int height, QImage::Format format, bool /* isTextBuffer */, QWidget *widget) : image(width, height, format) { uint cgflags = kCGImageAlphaNoneSkipFirst; #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version cgflags |= kCGBitmapByteOrder32Host; #endif cg = CGBitmapContextCreate(image.bits(), width, height, 8, image.bytesPerLine(), QCoreGraphicsPaintEngine::macDisplayColorSpace(widget), cgflags); CGContextTranslateCTM(cg, 0, height); CGContextScaleCTM(cg, 1, -1); Q_ASSERT(image.paintEngine()->type() == QPaintEngine::Raster); static_cast<QRasterPaintEngine *>(image.paintEngine())->setCGContext(cg); } QNativeImage::~QNativeImage() { CGContextRelease(cg); } QImage::Format QNativeImage::systemFormat() { return QImage::Format_RGB32; } #else // other platforms... QNativeImage::QNativeImage(int width, int height, QImage::Format format, bool /* isTextBuffer */, QWidget *) : image(width, height, format) { } QNativeImage::~QNativeImage() { } QImage::Format QNativeImage::systemFormat() { return QImage::Format_RGB32; } #endif // platforms QT_END_NAMESPACE
generated by cgit v0.12 at 2025-01-18 23:02:51 (GMT)