/****************************************************************************+ −
**+ −
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+ −
** All rights reserved.+ −
** Contact: Nokia Corporation (qt-info@nokia.com)+ −
**+ −
** This file is part of the QtGui module of the Qt Toolkit.+ −
**+ −
** $QT_BEGIN_LICENSE:LGPL$+ −
** No Commercial Usage+ −
** This file contains pre-release code and may not be distributed.+ −
** You may use this file in accordance with the terms and conditions+ −
** contained in the Technology Preview License Agreement accompanying+ −
** this package.+ −
**+ −
** GNU Lesser General Public License Usage+ −
** Alternatively, this file may be used under the terms of the GNU Lesser+ −
** General Public License version 2.1 as published by the Free Software+ −
** Foundation and appearing in the file LICENSE.LGPL included in the+ −
** packaging of this file. Please review the following information to+ −
** ensure the GNU Lesser General Public License version 2.1 requirements+ −
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+ −
**+ −
** In addition, as a special exception, Nokia gives you certain additional+ −
** rights. These rights are described in the Nokia Qt LGPL Exception+ −
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+ −
**+ −
** If you have questions regarding the use of this file, please contact+ −
** Nokia at qt-info@nokia.com.+ −
**+ −
**+ −
**+ −
**+ −
**+ −
**+ −
**+ −
**+ −
** $QT_END_LICENSE$+ −
**+ −
****************************************************************************/+ −
+ − #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;+ −
if (shmctl(xshminfo.shmid, IPC_RMID, 0) == -1)+ −
qWarning() << "Error while marking the shared memory segment to be destroyed";+ −
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;+ −
}+ −
if (X11->use_mitshm_pixmaps) {+ −
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+ −
+ −