Long live Qt 4.5!

1 files changed, 279 insertions, 0 deletions

diff --git a/src/gui/image/qnativeimage.cpp b/src/gui/image/qnativeimage.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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
+
+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_OS_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_OS_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 = CreateCompatibleDC(qt_win_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_OS_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)
+{
+    if (!X11->use_mitshm) {
+        xshmimg = 0;
+        xshmpm = 0;
+        image = QImage(width, height, format);
+        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 *)
+    : image(width, height, format)
+{
+    cgColorSpace = CGColorSpaceCreateDeviceRGB();
+    uint cgflags = kCGImageAlphaNoneSkipFirst;
+
+#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
+    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
+        cgflags |= kCGBitmapByteOrder32Host;
+#endif
+
+    cg = CGBitmapContextCreate(image.bits(), width, height, 8, image.bytesPerLine(), cgColorSpace, 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);
+    CGColorSpaceRelease(cgColorSpace);
+}
+
+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
+