Long live Qt 4.5!

1 files changed, 197 insertions, 0 deletions

diff --git a/src/gui/painting/qcolormap_win.cpp b/src/gui/painting/qcolormap_win.cpp
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+++ b/src/gui/painting/qcolormap_win.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 "qcolor.h"
+#include "qcolormap.h"
+#include "qvector.h"
+#include "qt_windows.h"
+
+#if defined(Q_OS_WINCE)
+#include "qguifunctions_wince.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QColormapPrivate
+{
+public:
+    inline QColormapPrivate()
+        : ref(1), mode(QColormap::Direct), depth(0), hpal(0)
+    { }
+
+    QAtomicInt ref;
+
+    QColormap::Mode mode;
+    int depth;
+    int numcolors;
+
+    HPALETTE hpal;
+    QVector<QColor> palette;
+};
+
+static QColormapPrivate *screenMap = 0;
+
+void QColormap::initialize()
+{
+    HDC dc = qt_win_display_dc();
+
+    screenMap = new QColormapPrivate;
+    screenMap->depth = GetDeviceCaps(dc, BITSPIXEL);
+
+    screenMap->numcolors = -1;
+    if (GetDeviceCaps(dc, RASTERCAPS) & RC_PALETTE)
+        screenMap->numcolors = GetDeviceCaps(dc, SIZEPALETTE);
+
+    if (screenMap->numcolors <= 16 || screenMap->numcolors > 256)        // no need to create palette
+        return;
+
+    LOGPALETTE* pal = 0;
+    int numPalEntries = 6*6*6; // color cube
+
+    pal = (LOGPALETTE*)malloc(sizeof(LOGPALETTE) + numPalEntries * sizeof(PALETTEENTRY));
+    // Make 6x6x6 color cube
+    int idx = 0;
+    for(int ir = 0x0; ir <= 0xff; ir+=0x33) {
+        for(int ig = 0x0; ig <= 0xff; ig+=0x33) {
+            for(int ib = 0x0; ib <= 0xff; ib+=0x33) {
+                pal->palPalEntry[idx].peRed = ir;
+                pal->palPalEntry[idx].peGreen = ig;
+                pal->palPalEntry[idx].peBlue = ib;
+                pal->palPalEntry[idx].peFlags = 0;
+                idx++;
+            }
+        }
+    }
+
+    pal->palVersion = 0x300;
+    pal->palNumEntries = numPalEntries;
+
+    screenMap->hpal = CreatePalette(pal);
+    if (!screenMap->hpal)
+        qErrnoWarning("QColor::initialize: Failed to create logical palette");
+    free (pal);
+
+    SelectPalette(dc, screenMap->hpal, FALSE);
+    RealizePalette(dc);
+
+    PALETTEENTRY paletteEntries[256];
+    screenMap->numcolors = GetPaletteEntries(screenMap->hpal, 0, 255, paletteEntries);
+
+    screenMap->palette.resize(screenMap->numcolors);
+    for (int i = 0; i < screenMap->numcolors; i++) {
+        screenMap->palette[i] = qRgb(paletteEntries[i].peRed,
+                                     paletteEntries[i].peGreen,
+                                     paletteEntries[i].peBlue);
+    }
+}
+
+void QColormap::cleanup()
+{
+    if (!screenMap)
+        return;
+
+    if (screenMap->hpal) {                                // delete application global
+        DeleteObject(screenMap->hpal);                        // palette
+        screenMap->hpal = 0;
+    }
+
+    delete screenMap;
+    screenMap = 0;
+}
+
+QColormap QColormap::instance(int)
+{ return QColormap(); }
+
+QColormap::QColormap()
+    : d(screenMap)
+{ d->ref.ref(); }
+
+QColormap::QColormap(const QColormap &colormap)
+    :d (colormap.d)
+{ d->ref.ref(); }
+
+QColormap::~QColormap()
+{
+    if (!d->ref.deref())
+        delete d;
+}
+
+QColormap::Mode QColormap::mode() const
+{ return d->mode; }
+
+int QColormap::depth() const
+{ return d->depth; }
+
+int QColormap::size() const
+{ return d->numcolors; }
+
+uint QColormap::pixel(const QColor &color) const
+{
+    const QColor c = color.toRgb();
+    COLORREF rgb = RGB(c.red(), c.green(), c.blue());
+    if (d->hpal)
+        return PALETTEINDEX(GetNearestPaletteIndex(d->hpal, rgb));
+    return rgb;
+}
+
+const QColor QColormap::colorAt(uint pixel) const
+{
+    if (d->hpal) {
+        if (pixel < uint(d->numcolors))
+            return d->palette.at(pixel);
+        return QColor();
+    }
+    return QColor(GetRValue(pixel), GetGValue(pixel), GetBValue(pixel));
+}
+
+
+HPALETTE QColormap::hPal()
+{ return screenMap ? screenMap->hpal : 0; }
+
+
+const QVector<QColor> QColormap::colormap() const
+{ return d->palette; }
+
+QColormap &QColormap::operator=(const QColormap &colormap)
+{ qAtomicAssign(d, colormap.d); return *this; }
+
+
+QT_END_NAMESPACE