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Diffstat (limited to 'src/gui/painting/qcolormap_win.cpp')
| -rw-r--r-- | src/gui/painting/qcolormap_win.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/gui/painting/qcolormap_win.cpp b/src/gui/painting/qcolormap_win.cpp new file mode 100644 index 0000000000..1773f717c0 --- /dev/null +++ b/src/gui/painting/qcolormap_win.cpp @@ -0,0 +1,201 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 "qcolor.h" +#include "qcolormap.h" +#include "qvector.h" +#include "qt_windows.h" + +#if defined(Q_WS_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) +{ + Q_ASSERT_X(screenMap, "QColormap", + "A QApplication object needs to be constructed before QColormap is used."); + 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 |