Initial import of statemachine branch from the old kinetic repository

1 files changed, 547 insertions, 0 deletions

diff --git a/src/gui/painting/qmemrotate.cpp b/src/gui/painting/qmemrotate.cpp
new file mode 100644
index 0000000..7ad0e42
--- /dev/null
+++ b/src/gui/painting/qmemrotate.cpp
@@ -0,0 +1,547 @@
+/****************************************************************************
+**
+** 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 "private/qmemrotate_p.h"
+
+QT_BEGIN_NAMESPACE
+
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+static const int tileSize = 32;
+#endif
+
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_PACKED || QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+#error Big endian version not implemented for the transformed driver!
+#endif
+#endif
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_cachedRead(const SRC *src, int w, int h,
+                                             int sstride,
+                                             DST *dest, int dstride)
+{
+    const char *s = reinterpret_cast<const char*>(src);
+    char *d = reinterpret_cast<char*>(dest);
+    for (int y = 0; y < h; ++y) {
+        for (int x = w - 1; x >= 0; --x) {
+            DST *destline = reinterpret_cast<DST*>(d + (w - x - 1) * dstride);
+            destline[y] = qt_colorConvert<DST,SRC>(src[x], 0);
+        }
+        s += sstride;
+        src = reinterpret_cast<const SRC*>(s);
+    }
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_cachedRead(const SRC *src, int w, int h,
+                                              int sstride,
+                                              DST *dest, int dstride)
+{
+    const char *s = reinterpret_cast<const char*>(src);
+    char *d = reinterpret_cast<char*>(dest);
+    s += (h - 1) * sstride;
+    for (int y = h - 1; y >= 0; --y) {
+        src = reinterpret_cast<const SRC*>(s);
+        for (int x = 0; x < w; ++x) {
+            DST *destline = reinterpret_cast<DST*>(d + x * dstride);
+            destline[h - y - 1] = qt_colorConvert<DST,SRC>(src[x], 0);
+        }
+        s -= sstride;
+    }
+}
+
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_cachedWrite(const SRC *src, int w, int h,
+                                              int sstride,
+                                              DST *dest, int dstride)
+{
+    for (int x = w - 1; x >= 0; --x) {
+        DST *d = dest + (w - x - 1) * dstride;
+        for (int y = 0; y < h; ++y) {
+            *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+        }
+    }
+
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_cachedWrite(const SRC *src, int w, int h,
+                                               int sstride,
+                                               DST *dest, int dstride)
+{
+    for (int x = 0; x < w; ++x) {
+        DST *d = dest + x * dstride;
+        for (int y = h - 1; y >= 0; --y) {
+            *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+        }
+    }
+}
+
+#endif // QT_ROTATION_CACHEDWRITE
+
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
+
+// TODO: packing algorithms should probably be modified on 64-bit architectures
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_packing(const SRC *src, int w, int h,
+                                          int sstride,
+                                          DST *dest, int dstride)
+{
+    sstride /= sizeof(SRC);
+    dstride /= sizeof(DST);
+
+    const int pack = sizeof(quint32) / sizeof(DST);
+    const int unaligned = int((long(dest) & (sizeof(quint32)-1))) / sizeof(DST);
+
+    for (int x = w - 1; x >= 0; --x) {
+        int y = 0;
+
+        for (int i = 0; i < unaligned; ++i) {
+            dest[(w - x - 1) * dstride + y]
+                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+            ++y;
+        }
+
+        quint32 *d = reinterpret_cast<quint32*>(dest + (w - x - 1) * dstride
+                                                + unaligned);
+        const int rest = (h - unaligned) % pack;
+        while (y < h - rest) {
+            quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+            for (int i = 1; i < pack; ++i) {
+                c |= qt_colorConvert<DST,SRC>(src[(y + i) * sstride + x], 0)
+                     << (sizeof(int) * 8 / pack * i);
+            }
+            *d++ = c;
+            y += pack;
+        }
+
+        while (y < h) {
+            dest[(w - x - 1) * dstride + y]
+                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+            ++y;
+        }
+    }
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_packing(const SRC *src, int w, int h,
+                                           int sstride,
+                                           DST *dest, int dstride)
+{
+    sstride /= sizeof(SRC);
+    dstride /= sizeof(DST);
+
+    const int pack = sizeof(quint32) / sizeof(DST);
+    const int unaligned = int((long(dest) & (sizeof(quint32)-1))) / sizeof(DST);
+
+    for (int x = 0; x < w; ++x) {
+        int y = h - 1;
+
+        for (int i = 0; i < unaligned; ++i) {
+            dest[x * dstride + h - y - 1]
+                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+            --y;
+        }
+
+        quint32 *d = reinterpret_cast<quint32*>(dest + x * dstride
+                                                + unaligned);
+        const int rest = (h - unaligned) % pack;
+        while (y > rest) {
+            quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+            for (int i = 1; i < pack; ++i) {
+                c |= qt_colorConvert<DST,SRC>(src[(y - i) * sstride + x], 0)
+                     << (sizeof(int) * 8 / pack * i);
+            }
+            *d++ = c;
+            y -= pack;
+        }
+        while (y >= 0) {
+            dest[x * dstride + h - y - 1]
+                = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+            --y;
+        }
+    }
+}
+
+#endif // QT_ROTATION_PACKING
+
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_tiled(const SRC *src, int w, int h,
+                                        int sstride,
+                                        DST *dest, int dstride)
+{
+    sstride /= sizeof(SRC);
+    dstride /= sizeof(DST);
+
+    const int pack = sizeof(quint32) / sizeof(DST);
+    const int unaligned =
+        qMin(uint((quintptr(dest) & (sizeof(quint32)-1)) / sizeof(DST)), uint(h));
+    const int restX = w % tileSize;
+    const int restY = (h - unaligned) % tileSize;
+    const int unoptimizedY = restY % pack;
+    const int numTilesX = w / tileSize + (restX > 0);
+    const int numTilesY = (h - unaligned) / tileSize + (restY >= pack);
+
+    for (int tx = 0; tx < numTilesX; ++tx) {
+        const int startx = w - tx * tileSize - 1;
+        const int stopx = qMax(startx - tileSize, 0);
+
+        if (unaligned) {
+            for (int x = startx; x >= stopx; --x) {
+                DST *d = dest + (w - x - 1) * dstride;
+                for (int y = 0; y < unaligned; ++y) {
+                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+                }
+            }
+        }
+
+        for (int ty = 0; ty < numTilesY; ++ty) {
+            const int starty = ty * tileSize + unaligned;
+            const int stopy = qMin(starty + tileSize, h - unoptimizedY);
+
+            for (int x = startx; x >= stopx; --x) {
+                quint32 *d = reinterpret_cast<quint32*>(dest + (w - x - 1) * dstride + starty);
+                for (int y = starty; y < stopy; y += pack) {
+                    quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+                    for (int i = 1; i < pack; ++i) {
+                        const int shift = (sizeof(int) * 8 / pack * i);
+                        const DST color = qt_colorConvert<DST,SRC>(src[(y + i) * sstride + x], 0);
+                        c |= color << shift;
+                    }
+                    *d++ = c;
+                }
+            }
+        }
+
+        if (unoptimizedY) {
+            const int starty = h - unoptimizedY;
+            for (int x = startx; x >= stopx; --x) {
+                DST *d = dest + (w - x - 1) * dstride + starty;
+                for (int y = starty; y < h; ++y) {
+                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+                }
+            }
+        }
+    }
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_tiled_unpacked(const SRC *src, int w, int h,
+                                                 int sstride,
+                                                 DST *dest, int dstride)
+{
+    const int numTilesX = (w + tileSize - 1) / tileSize;
+    const int numTilesY = (h + tileSize - 1) / tileSize;
+
+    for (int tx = 0; tx < numTilesX; ++tx) {
+        const int startx = w - tx * tileSize - 1;
+        const int stopx = qMax(startx - tileSize, 0);
+
+        for (int ty = 0; ty < numTilesY; ++ty) {
+            const int starty = ty * tileSize;
+            const int stopy = qMin(starty + tileSize, h);
+
+            for (int x = startx; x >= stopx; --x) {
+                DST *d = (DST*)((char*)dest + (w - x - 1) * dstride) + starty;
+                const char *s = (const char*)(src + x) + starty * sstride;
+                for (int y = starty; y < stopy; ++y) {
+                    *d++ = qt_colorConvert<DST,SRC>(*(const SRC*)(s), 0);
+                    s += sstride;
+                }
+            }
+        }
+    }
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_tiled(const SRC *src, int w, int h,
+                                         int sstride,
+                                         DST *dest, int dstride)
+{
+    sstride /= sizeof(SRC);
+    dstride /= sizeof(DST);
+
+    const int pack = sizeof(quint32) / sizeof(DST);
+    const int unaligned =
+        qMin(uint((long(dest) & (sizeof(quint32)-1)) / sizeof(DST)), uint(h));
+    const int restX = w % tileSize;
+    const int restY = (h - unaligned) % tileSize;
+    const int unoptimizedY = restY % pack;
+    const int numTilesX = w / tileSize + (restX > 0);
+    const int numTilesY = (h - unaligned) / tileSize + (restY >= pack);
+
+    for (int tx = 0; tx < numTilesX; ++tx) {
+        const int startx = tx * tileSize;
+        const int stopx = qMin(startx + tileSize, w);
+
+        if (unaligned) {
+            for (int x = startx; x < stopx; ++x) {
+                DST *d = dest + x * dstride;
+                for (int y = h - 1; y >= h - unaligned; --y) {
+                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+                }
+            }
+        }
+
+        for (int ty = 0; ty < numTilesY; ++ty) {
+            const int starty = h - 1 - unaligned - ty * tileSize;
+            const int stopy = qMax(starty - tileSize, unoptimizedY);
+
+            for (int x = startx; x < stopx; ++x) {
+                quint32 *d = reinterpret_cast<quint32*>(dest + x * dstride
+                                                        + h - 1 - starty);
+                for (int y = starty; y > stopy; y -= pack) {
+                    quint32 c = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+                    for (int i = 1; i < pack; ++i) {
+                        const int shift = (sizeof(int) * 8 / pack * i);
+                        const DST color = qt_colorConvert<DST,SRC>(src[(y - i) * sstride + x], 0);
+                        c |= color << shift;
+                    }
+                    *d++ = c;
+                }
+            }
+        }
+        if (unoptimizedY) {
+            const int starty = unoptimizedY - 1;
+            for (int x = startx; x < stopx; ++x) {
+                DST *d = dest + x * dstride + h - 1 - starty;
+                for (int y = starty; y >= 0; --y) {
+                    *d++ = qt_colorConvert<DST,SRC>(src[y * sstride + x], 0);
+                }
+            }
+        }
+    }
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_tiled_unpacked(const SRC *src, int w, int h,
+                                                  int sstride,
+                                                  DST *dest, int dstride)
+{
+    const int numTilesX = (w + tileSize - 1) / tileSize;
+    const int numTilesY = (h + tileSize - 1) / tileSize;
+
+    for (int tx = 0; tx < numTilesX; ++tx) {
+        const int startx = tx * tileSize;
+        const int stopx = qMin(startx + tileSize, w);
+
+        for (int ty = 0; ty < numTilesY; ++ty) {
+            const int starty = h - 1 - ty * tileSize;
+            const int stopy = qMax(starty - tileSize, 0);
+
+            for (int x = startx; x < stopx; ++x) {
+                DST *d = (DST*)((char*)dest + x * dstride) + h - 1 - starty;
+                const char *s = (const char*)(src + x) + starty * sstride;
+                for (int y = starty; y >= stopy; --y) {
+                    *d++ = qt_colorConvert<DST,SRC>(*(const SRC*)s, 0);
+                    s -= sstride;
+                }
+            }
+        }
+    }
+}
+
+#endif // QT_ROTATION_ALGORITHM
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate90_template(const SRC *src,
+                                           int srcWidth, int srcHeight, int srcStride,
+                                           DST *dest, int dstStride)
+{
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
+    qt_memrotate90_cachedRead<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                       dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
+    qt_memrotate90_cachedWrite<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                        dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
+    qt_memrotate90_packing<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                    dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+    qt_memrotate90_tiled<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                  dest, dstStride);
+#endif
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate180_template(const SRC *src,
+                                            int w, int h, int sstride,
+                                            DST *dest, int dstride)
+{
+    const char *s = (const char*)(src) + (h - 1) * sstride;
+    for (int y = h - 1; y >= 0; --y) {
+        DST *d = reinterpret_cast<DST*>((char *)(dest) + (h - y - 1) * dstride);
+        src = reinterpret_cast<const SRC*>(s);
+        for (int x = w - 1; x >= 0; --x) {
+            d[w - x - 1] = qt_colorConvert<DST,SRC>(src[x], 0);
+        }
+        s -= sstride;
+    }
+}
+
+template <class DST, class SRC>
+Q_STATIC_TEMPLATE_FUNCTION inline void qt_memrotate270_template(const SRC *src,
+                                            int srcWidth, int srcHeight, int srcStride,
+                                            DST *dest, int dstStride)
+{
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
+    qt_memrotate270_cachedRead<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                        dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
+    qt_memrotate270_cachedWrite<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                         dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
+    qt_memrotate270_packing<DST,SRC>(src, srcWidth, srcHeight, srcStride,
+                                     dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+    qt_memrotate270_tiled_unpacked<DST,SRC>(src, srcWidth, srcHeight,
+                                            srcStride,
+                                            dest, dstStride);
+#endif
+}
+
+template <>
+Q_STATIC_TEMPLATE_SPECIALIZATION
+inline void qt_memrotate90_template<quint24, quint24>(const quint24 *src,
+                                                             int srcWidth, int srcHeight, int srcStride,
+                                                             quint24 *dest, int dstStride)
+{
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
+    qt_memrotate90_cachedRead<quint24,quint24>(src, srcWidth, srcHeight,
+                                               srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
+    qt_memrotate90_cachedWrite<quint24,quint24>(src, srcWidth, srcHeight,
+                                                srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
+    // packed algorithm not implemented
+    qt_memrotate90_cachedRead<quint24,quint24>(src, srcWidth, srcHeight,
+                                               srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+    // packed algorithm not implemented
+    qt_memrotate90_tiled_unpacked<quint24,quint24>(src, srcWidth, srcHeight,
+                                                   srcStride, dest, dstStride);
+#endif
+}
+
+template <>
+Q_STATIC_TEMPLATE_SPECIALIZATION
+inline void qt_memrotate90_template<quint24, quint32>(const quint32 *src,
+                                                             int srcWidth, int srcHeight, int srcStride,
+                                                             quint24 *dest, int dstStride)
+{
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
+    qt_memrotate90_cachedRead<quint24,quint32>(src, srcWidth, srcHeight,
+                                               srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
+    qt_memrotate90_cachedWrite<quint24,quint32>(src, srcWidth, srcHeight,
+                                                srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
+    // packed algorithm not implemented
+    qt_memrotate90_cachedRead<quint24,quint32>(src, srcWidth, srcHeight,
+                                               srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+    // packed algorithm not implemented
+    qt_memrotate90_tiled_unpacked<quint24,quint32>(src, srcWidth, srcHeight,
+                                                   srcStride, dest, dstStride);
+#endif
+}
+
+template <>
+Q_STATIC_TEMPLATE_SPECIALIZATION
+inline void qt_memrotate90_template<quint18, quint32>(const quint32 *src,
+                                                             int srcWidth, int srcHeight, int srcStride,
+                                                             quint18 *dest, int dstStride)
+{
+#if QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDREAD
+    qt_memrotate90_cachedRead<quint18,quint32>(src, srcWidth, srcHeight,
+                                               srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_CACHEDWRITE
+    qt_memrotate90_cachedWrite<quint18,quint32>(src, srcWidth, srcHeight,
+                                                srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_PACKING
+    // packed algorithm not implemented
+    qt_memrotate90_cachedRead<quint18,quint32>(src, srcWidth, srcHeight,
+                                               srcStride, dest, dstStride);
+#elif QT_ROTATION_ALGORITHM == QT_ROTATION_TILED
+    // packed algorithm not implemented
+    qt_memrotate90_tiled_unpacked<quint18,quint32>(src, srcWidth, srcHeight,
+                                                   srcStride, dest, dstStride);
+#endif
+}
+
+#define QT_IMPL_MEMROTATE(srctype, desttype)                        \
+void qt_memrotate90(const srctype *src, int w, int h, int sstride,  \
+                    desttype *dest, int dstride)                    \
+{                                                                   \
+    qt_memrotate90_template(src, w, h, sstride, dest, dstride);     \
+}                                                                   \
+void qt_memrotate180(const srctype *src, int w, int h, int sstride, \
+                     desttype *dest, int dstride)                   \
+{                                                                   \
+    qt_memrotate180_template(src, w, h, sstride, dest, dstride);    \
+}                                                                   \
+void qt_memrotate270(const srctype *src, int w, int h, int sstride, \
+                     desttype *dest, int dstride)                   \
+{                                                                   \
+    qt_memrotate270_template(src, w, h, sstride, dest, dstride);    \
+}
+
+QT_IMPL_MEMROTATE(quint32, quint32)
+QT_IMPL_MEMROTATE(quint32, quint16)
+QT_IMPL_MEMROTATE(quint16, quint32)
+QT_IMPL_MEMROTATE(quint16, quint16)
+QT_IMPL_MEMROTATE(quint24, quint24)
+QT_IMPL_MEMROTATE(quint32, quint24)
+QT_IMPL_MEMROTATE(quint32, quint18)
+QT_IMPL_MEMROTATE(quint32, quint8)
+QT_IMPL_MEMROTATE(quint16, quint8)
+QT_IMPL_MEMROTATE(quint8, quint8)
+#ifdef QT_QWS_DEPTH_GENERIC
+QT_IMPL_MEMROTATE(quint32, qrgb_generic16)
+QT_IMPL_MEMROTATE(quint16, qrgb_generic16)
+#endif
+
+
+QT_END_NAMESPACE