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Diffstat (limited to 'tqtinterface/qt4/src/opengl/tqglcolormap.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/opengl/tqglcolormap.cpp | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/tqtinterface/qt4/src/opengl/tqglcolormap.cpp b/tqtinterface/qt4/src/opengl/tqglcolormap.cpp deleted file mode 100644 index 3afdb7c..0000000 --- a/tqtinterface/qt4/src/opengl/tqglcolormap.cpp +++ /dev/null @@ -1,292 +0,0 @@ -/**************************************************************************** -** -** Implementation of TQGLColormap class -** -** Created : 20010326 -** -** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA. -** -** This file is part of the opengl module of the TQt GUI Toolkit. -** -** This file may be used under the terms of the GNU General -** Public License versions 2.0 or 3.0 as published by the Free -** Software Foundation and appearing in the files LICENSE.GPL2 -** and LICENSE.GPL3 included in the packaging of this file. -** Alternatively you may (at your option) use any later version -** of the GNU General Public License if such license has been -** publicly approved by Trolltech ASA (or its successors, if any) -** and the KDE Free TQt Foundation. -** -** Please review the following information to ensure GNU General -** Public Licensing requirements will be met: -** http://trolltech.com/products/qt/licenses/licensing/opensource/. -** If you are unsure which license is appropriate for your use, please -** review the following information: -** http://trolltech.com/products/qt/licenses/licensing/licensingoverview -** or contact the sales department at sales@trolltech.com. -** -** This file may be used under the terms of the Q Public License as -** defined by Trolltech ASA and appearing in the file LICENSE.TQPL -** included in the packaging of this file. Licensees holding valid TQt -** Commercial licenses may use this file in accordance with the TQt -** Commercial License Agreement provided with the Software. -** -** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, -** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted -** herein. -** -**********************************************************************/ - -/*! - \class TQGLColormap tqglcolormap.h - \brief The TQGLColormap class is used for installing custom colormaps into - TQGLWidgets. -\if defined(commercial) - It is part of the <a href="commercialeditions.html">TQt Enterprise Edition</a>. -\endif - - \module OpenGL - \ingroup graphics - \ingroup images - - TQGLColormap provides a platform independent way of specifying and - installing indexed colormaps into TQGLWidgets. TQGLColormap is - especially useful when using the \link opengl.html OpenGL\endlink - 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. - - Under Windows 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 explicit sharing (see \link shclass.html Shared - Classes\endlink). - - Example of use: - \code - #include <tqapplication.h> - #include <tqglcolormap.h> - - int main() - { - TQApplication a( argc, argv ); - - MySuperGLWidget widget( 0 ); // A TQGLWidget in color-index mode - TQGLColormap colormap; - - // This will fill the colormap with colors ranging from - // black to white. - for ( int i = 0; i < colormap.size(); i++ ) - colormap.setEntry( i, tqRgb( i, i, i ) ); - - widget.setColormap( colormap ); - widget.show(); - return a.exec(); - } - \endcode - - \sa TQGLWidget::setColormap(), TQGLWidget::colormap() -*/ - -#include "tqglcolormap.h" -#include "tqmemarray.h" - - -/*! - Construct a TQGLColormap. -*/ -TQGLColormap::TQGLColormap() -{ - d = 0; -} - - -/*! - Construct a shallow copy of \a map. -*/ -TQGLColormap::TQGLColormap( const TQGLColormap & map ) -{ - d = map.d; - if ( d ) - d->ref(); -} - -/*! - Dereferences the TQGLColormap and deletes it if this was the last - reference to it. -*/ -TQGLColormap::~TQGLColormap() -{ - if ( d && d->deref() ) { - delete d; - d = 0; - } -} - -/*! - Assign a shallow copy of \a map to this TQGLColormap. -*/ -TQGLColormap & TQGLColormap::operator=( const TQGLColormap & map ) -{ - if ( map.d != 0 ) - map.d->ref(); - - if ( d && d->deref() ) - delete d; - d = map.d; - - return *this; -} - -/*! - Detaches this TQGLColormap from the shared block. -*/ -void TQGLColormap::detach() -{ - if ( d && d->count != 1 ) { - // ### What about the actual colormap handle? - Private * newd = new Private(); - newd->cells = d->cells; - newd->cells.detach(); - if ( d->deref() ) - delete d; - d = newd; - } -} - -/*! - Set cell at index \a idx in the colormap to color \a color. -*/ -void TQGLColormap::setEntry( int idx, TQRgb color ) -{ - if ( !d ) - d = new Private(); - -#if defined(TQT_CHECK_RANGE) - if ( idx < 0 || idx > (int) d->cells.size() ) { - qWarning( "TQGLColormap::setRgb: Index out of range." ); - return; - } -#endif - d->cells[ 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. -*/ -void TQGLColormap::setEntries( int count, const TQRgb * colors, int base ) -{ - if ( !d ) - d = new Private(); - - if ( !colors || base < 0 || base >= (int) d->cells.size() ) - return; - - for( int i = base; i < base + count; i++ ) { - if ( i < (int) d->cells.size() ) - setEntry( i, colors[i] ); - else - break; - } -} - -/*! - Returns the TQRgb value in the colorcell with index \a idx. -*/ -TQRgb TQGLColormap::entryRgb( int idx ) const -{ - if ( !d || idx < 0 || idx > (int) d->cells.size() ) - return 0; - else - return d->cells[ idx ]; -} - -/*! - \overload - - Set the cell with index \a idx in the colormap to color \a color. -*/ -void TQGLColormap::setEntry( int idx, const TQColor & color ) -{ - setEntry( idx, color.rgb() ); -} - -/*! - Returns the TQRgb value in the colorcell with index \a idx. -*/ -TQColor TQGLColormap::entryColor( int idx ) const -{ - if ( !d || idx < 0 || idx > (int) d->cells.size() ) - return TQColor(); - else - return TQColor( d->cells[ idx ] ); -} - -/*! - Returns TRUE if the colormap is empty; otherwise returns FALSE. A - colormap with no color values set is considered to be empty. -*/ -bool TQGLColormap::isEmpty() const -{ - return (d == 0) || (d->cells.size() == 0) || (d->cmapHandle == 0); -} - - -/*! - Returns the number of colorcells in the colormap. -*/ -int TQGLColormap::size() const -{ - return d != 0 ? d->cells.size() : 0; -} - -/*! - Returns the index of the color \a color. If \a color is not in the - map, -1 is returned. -*/ -int TQGLColormap::find( TQRgb color ) const -{ - if ( d ) - return d->cells.find( color ); - return -1; -} - -/*! - Returns the index of the color that is the closest match to color - \a color. -*/ -int TQGLColormap::findNearest( TQRgb color ) const -{ - int idx = find( color ); - if ( idx >= 0 ) - return idx; - int mapSize = size(); - int mindist = 200000; - int r = tqRed( color ); - int g = tqGreen( color ); - int b = tqBlue( color ); - int rx, gx, bx, dist; - for ( int i=0; i < mapSize; i++ ) { - TQRgb ci = d->cells[i]; - rx = r - tqRed( ci ); - gx = g - tqGreen( ci ); - bx = b - tqBlue( ci ); - dist = rx*rx + gx*gx + bx*bx; // calculate distance - if ( dist < mindist ) { // minimal? - mindist = dist; - idx = i; - } - } - return idx; -} |