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Diffstat (limited to 'src/opengl/qglcolormap.cpp')
| -rw-r--r-- | src/opengl/qglcolormap.cpp | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/src/opengl/qglcolormap.cpp b/src/opengl/qglcolormap.cpp deleted file mode 100644 index f314a9715d..0000000000 --- a/src/opengl/qglcolormap.cpp +++ /dev/null @@ -1,296 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtOpenGL module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \class QGLColormap - \brief The QGLColormap class is used for installing custom colormaps into - a QGLWidget. - - \obsolete - \inmodule QtOpenGL - \ingroup painting-3D - \ingroup shared - - QGLColormap provides a platform independent way of specifying and - installing indexed colormaps for a QGLWidget. QGLColormap is - especially useful when using the OpenGL color-index mode. - - Under X11 you must use an X server that supports either a \c - PseudoColor or \c DirectColor visual class. If your X server - currently only provides a \c GrayScale, \c TrueColor, \c - StaticColor or \c StaticGray visual, you will not be able to - allocate colorcells for writing. If this is the case, try setting - your X server to 8 bit mode. It should then provide you with at - least a \c PseudoColor visual. Note that you may experience - colormap flashing if your X server is running in 8 bit mode. - - The size() of the colormap is always set to 256 - colors. Note that under Windows you can also install colormaps - in child widgets. - - This class uses \l{implicit sharing} as a memory and speed - optimization. - - Example of use: - \snippet code/src_opengl_qglcolormap.cpp 0 - - \sa QGLWidget::setColormap(), QGLWidget::colormap() -*/ - -/*! - \fn Qt::HANDLE QGLColormap::handle() - - \internal - - Returns the handle for this color map. -*/ - -/*! - \fn void QGLColormap::setHandle(Qt::HANDLE handle) - - \internal - - Sets the handle for this color map to \a handle. -*/ - -#include "qglcolormap.h" - -QT_BEGIN_NAMESPACE - -QGLColormap::QGLColormapData QGLColormap::shared_null = { Q_BASIC_ATOMIC_INITIALIZER(1), 0, 0 }; - -/*! - Construct a QGLColormap. -*/ -QGLColormap::QGLColormap() - : d(&shared_null) -{ - d->ref.ref(); -} - - -/*! - Construct a shallow copy of \a map. -*/ -QGLColormap::QGLColormap(const QGLColormap &map) - : d(map.d) -{ - d->ref.ref(); -} - -/*! - Dereferences the QGLColormap and deletes it if this was the last - reference to it. -*/ -QGLColormap::~QGLColormap() -{ - if (!d->ref.deref()) - cleanup(d); -} - -void QGLColormap::cleanup(QGLColormap::QGLColormapData *x) -{ - delete x->cells; - x->cells = 0; - delete x; -} - -/*! - Assign a shallow copy of \a map to this QGLColormap. -*/ -QGLColormap & QGLColormap::operator=(const QGLColormap &map) -{ - map.d->ref.ref(); - if (!d->ref.deref()) - cleanup(d); - d = map.d; - return *this; -} - -/*! - \fn void QGLColormap::detach() - \internal - - Detaches this QGLColormap from the shared block. -*/ - -void QGLColormap::detach_helper() -{ - QGLColormapData *x = new QGLColormapData; - x->ref.storeRelaxed(1); - x->cmapHandle = 0; - x->cells = 0; - if (d->cells) { - x->cells = new QVector<QRgb>(256); - *x->cells = *d->cells; - } - if (!d->ref.deref()) - cleanup(d); - d = x; -} - -/*! - Set cell at index \a idx in the colormap to color \a color. -*/ -void QGLColormap::setEntry(int idx, QRgb color) -{ - detach(); - if (!d->cells) - d->cells = new QVector<QRgb>(256); - d->cells->replace(idx, color); -} - -/*! - Set an array of cells in this colormap. \a count is the number of - colors that should be set, \a colors is the array of colors, and - \a base is the starting index. The first element in \a colors - is set at \a base in the colormap. -*/ -void QGLColormap::setEntries(int count, const QRgb *colors, int base) -{ - detach(); - if (!d->cells) - d->cells = new QVector<QRgb>(256); - - Q_ASSERT_X(colors && base >= 0 && (base + count) <= d->cells->size(), "QGLColormap::setEntries", - "preconditions not met"); - for (int i = 0; i < count; ++i) - setEntry(base + i, colors[i]); -} - -/*! - Returns the QRgb value in the colorcell with index \a idx. -*/ -QRgb QGLColormap::entryRgb(int idx) const -{ - if (d == &shared_null || !d->cells) - return 0; - else - return d->cells->at(idx); -} - -/*! - \overload - - Set the cell with index \a idx in the colormap to color \a color. -*/ -void QGLColormap::setEntry(int idx, const QColor &color) -{ - setEntry(idx, color.rgb()); -} - -/*! - Returns the QRgb value in the colorcell with index \a idx. -*/ -QColor QGLColormap::entryColor(int idx) const -{ - if (d == &shared_null || !d->cells) - return QColor(); - else - return QColor(d->cells->at(idx)); -} - -/*! - Returns \c true if the colormap is empty or it is not in use - by a QGLWidget; otherwise returns \c false. - - A colormap with no color values set is considered to be empty. - For historical reasons, a colormap that has color values set - but which is not in use by a QGLWidget is also considered empty. - - Compare size() with zero to determine if the colormap is empty - regardless of whether it is in use by a QGLWidget or not. - - \sa size() -*/ -bool QGLColormap::isEmpty() const -{ - return d == &shared_null || d->cells == 0 || d->cells->size() == 0 || d->cmapHandle == 0; -} - - -/*! - Returns the number of colorcells in the colormap. -*/ -int QGLColormap::size() const -{ - return d->cells ? d->cells->size() : 0; -} - -/*! - Returns the index of the color \a color. If \a color is not in the - map, -1 is returned. -*/ -int QGLColormap::find(QRgb color) const -{ - if (d->cells) - return d->cells->indexOf(color); - return -1; -} - -/*! - Returns the index of the color that is the closest match to color - \a color. -*/ -int QGLColormap::findNearest(QRgb color) const -{ - int idx = find(color); - if (idx >= 0) - return idx; - int mapSize = size(); - int mindist = 200000; - int r = qRed(color); - int g = qGreen(color); - int b = qBlue(color); - int rx, gx, bx, dist; - for (int i = 0; i < mapSize; ++i) { - QRgb ci = d->cells->at(i); - rx = r - qRed(ci); - gx = g - qGreen(ci); - bx = b - qBlue(ci); - dist = rx * rx + gx * gx + bx * bx; // calculate distance - if (dist < mindist) { // minimal? - mindist = dist; - idx = i; - } - } - return idx; -} - -QT_END_NAMESPACE |