| /**************************************************************************** |
| ** |
| ** 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. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** 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. |
| ** |
| ** 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. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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 |