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Diffstat (limited to 'src/widgets/util/qcolormap_qpa.cpp')
-rw-r--r-- | src/widgets/util/qcolormap_qpa.cpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/widgets/util/qcolormap_qpa.cpp b/src/widgets/util/qcolormap_qpa.cpp new file mode 100644 index 0000000000..6ad3abb3aa --- /dev/null +++ b/src/widgets/util/qcolormap_qpa.cpp @@ -0,0 +1,228 @@ +/**************************************************************************** +** +** Copyright (C) 2009 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 "qcolormap.h" +#include "qcolor.h" +#include "qpaintdevice.h" +#include "qscreen.h" +#include "qguiapplication.h" + +QT_BEGIN_NAMESPACE + +class QColormapPrivate +{ +public: + inline QColormapPrivate() + : ref(1), mode(QColormap::Direct), depth(0), numcolors(0) + { } + + QAtomicInt ref; + + QColormap::Mode mode; + int depth; + int numcolors; +}; + +static QColormapPrivate *screenMap = 0; + +void QColormap::initialize() +{ + screenMap = new QColormapPrivate; + + screenMap->depth = QGuiApplication::primaryScreen()->depth(); + if (screenMap->depth < 8) { + screenMap->mode = QColormap::Indexed; + screenMap->numcolors = 256; + } else { + screenMap->mode = QColormap::Direct; + screenMap->numcolors = -1; + } +} + +void QColormap::cleanup() +{ + delete screenMap; + screenMap = 0; +} + +QColormap QColormap::instance(int /*screen*/) +{ + 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; +} + +#ifndef QT_QWS_DEPTH16_RGB +#define QT_QWS_DEPTH16_RGB 565 +#endif +static const int qt_rbits = (QT_QWS_DEPTH16_RGB/100); +static const int qt_gbits = (QT_QWS_DEPTH16_RGB/10%10); +static const int qt_bbits = (QT_QWS_DEPTH16_RGB%10); +static const int qt_red_shift = qt_bbits+qt_gbits-(8-qt_rbits); +static const int qt_green_shift = qt_bbits-(8-qt_gbits); +static const int qt_neg_blue_shift = 8-qt_bbits; +static const int qt_blue_mask = (1<<qt_bbits)-1; +static const int qt_green_mask = (1<<(qt_gbits+qt_bbits))-(1<<qt_bbits); +static const int qt_red_mask = (1<<(qt_rbits+qt_gbits+qt_bbits))-(1<<(qt_gbits+qt_bbits)); + +static const int qt_red_rounding_shift = qt_red_shift + qt_rbits; +static const int qt_green_rounding_shift = qt_green_shift + qt_gbits; +static const int qt_blue_rounding_shift = qt_bbits - qt_neg_blue_shift; + +inline ushort qt_convRgbTo16(QRgb c) +{ + const int tr = qRed(c) << qt_red_shift; + const int tg = qGreen(c) << qt_green_shift; + const int tb = qBlue(c) >> qt_neg_blue_shift; + + return (tb & qt_blue_mask) | (tg & qt_green_mask) | (tr & qt_red_mask); +} + +inline QRgb qt_conv16ToRgb(ushort c) +{ + const int r=(c & qt_red_mask); + const int g=(c & qt_green_mask); + const int b=(c & qt_blue_mask); + const int tr = r >> qt_red_shift | r >> qt_red_rounding_shift; + const int tg = g >> qt_green_shift | g >> qt_green_rounding_shift; + const int tb = b << qt_neg_blue_shift | b >> qt_blue_rounding_shift; + + return qRgb(tr,tg,tb); +} + +uint QColormap::pixel(const QColor &color) const +{ + QRgb rgb = color.rgba(); + if (d->mode == QColormap::Direct) { + switch(d->depth) { + case 16: + return qt_convRgbTo16(rgb); + case 24: + case 32: + { + const int r = qRed(rgb); + const int g = qGreen(rgb); + const int b = qBlue(rgb); + const int red_shift = 16; + const int green_shift = 8; + const int red_mask = 0xff0000; + const int green_mask = 0x00ff00; + const int blue_mask = 0x0000ff; + const int tg = g << green_shift; +#ifdef QT_QWS_DEPTH_32_BGR + if (qt_screen->pixelType() == QScreen::BGRPixel) { + const int tb = b << red_shift; + return 0xff000000 | (r & blue_mask) | (tg & green_mask) | (tb & red_mask); + } +#endif + const int tr = r << red_shift; + return 0xff000000 | (b & blue_mask) | (tg & green_mask) | (tr & red_mask); + } + } + } + //XXX + //return qt_screen->alloc(qRed(rgb), qGreen(rgb), qBlue(rgb)); + return 0; +} + +const QColor QColormap::colorAt(uint pixel) const +{ + if (d->mode == Direct) { + if (d->depth == 16) { + pixel = qt_conv16ToRgb(pixel); + } + const int red_shift = 16; + const int green_shift = 8; + const int red_mask = 0xff0000; + const int green_mask = 0x00ff00; + const int blue_mask = 0x0000ff; +#ifdef QT_QWS_DEPTH_32_BGR + if (qt_screen->pixelType() == QScreen::BGRPixel) { + return QColor((pixel & blue_mask), + (pixel & green_mask) >> green_shift, + (pixel & red_mask) >> red_shift); + } +#endif + return QColor((pixel & red_mask) >> red_shift, + (pixel & green_mask) >> green_shift, + (pixel & blue_mask)); + } +#if 0 // XXX + Q_ASSERT_X(int(pixel) < qt_screen->numCols(), "QColormap::colorAt", "pixel out of bounds of palette"); + return QColor(qt_screen->clut()[pixel]); +#endif + return QColor(); +} + +const QVector<QColor> QColormap::colormap() const +{ + return QVector<QColor>(); +} + +QColormap &QColormap::operator=(const QColormap &colormap) +{ qAtomicAssign(d, colormap.d); return *this; } + +QT_END_NAMESPACE |