KD Chart 2  [rev.2.5]
KDChartTextAttributes.cpp
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00001 /****************************************************************************
00002 ** Copyright (C) 2001-2012 Klaralvdalens Datakonsult AB.  All rights reserved.
00003 **
00004 ** This file is part of the KD Chart library.
00005 **
00006 ** Licensees holding valid commercial KD Chart licenses may use this file in
00007 ** accordance with the KD Chart Commercial License Agreement provided with
00008 ** the Software.
00009 **
00010 **
00011 ** This file may be distributed and/or modified under the terms of the
00012 ** GNU General Public License version 2 and version 3 as published by the
00013 ** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
00014 **
00015 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00016 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00017 **
00018 ** Contact info@kdab.com if any conditions of this licensing are not
00019 ** clear to you.
00020 **
00021 **********************************************************************/
00022 
00023 #include "KDChartTextAttributes.h"
00024 
00025 #include <KDChartCartesianCoordinatePlane.h>
00026 
00027 #include <QFont>
00028 #include <QPen>
00029 #include <qglobal.h>
00030 #include <QApplication>
00031 #include <QSharedPointer>
00032 #include <QTextDocument>
00033 #include <KDABLibFakes>
00034 
00035 #define d d_func()
00036 
00037 using namespace KDChart;
00038 
00039 class TextAttributes::Private
00040 {
00041     friend class TextAttributes;
00042 public:
00043      Private();
00044 private:
00045     bool visible;
00046     QFont font;
00047     mutable QFont cachedFont;
00048     mutable qreal cachedFontSize;
00049     Measure fontSize;
00050     Measure minimalFontSize;
00051     bool autoRotate;
00052     bool autoShrink;
00053     bool hasRotation;
00054     int rotation;
00055     QPen pen;
00056     QSharedPointer<QTextDocument> document;
00057 };
00058 
00059 TextAttributes::Private::Private()
00060     : visible( true ),
00061       font( QApplication::font() ),
00062       cachedFontSize( -1.0 ),
00063       autoRotate( false ),
00064       autoShrink( false ),
00065       hasRotation( false ),
00066       rotation( 0 ),
00067       pen( Qt::black )
00068 {
00069 }
00070 
00071 TextAttributes::TextAttributes()
00072     : _d( new Private() )
00073 {
00074 }
00075 
00076 TextAttributes::TextAttributes( const TextAttributes& r )
00077     : _d( new Private( *r.d ) )
00078 {
00079 
00080 }
00081 
00082 TextAttributes & TextAttributes::operator=( const TextAttributes& r )
00083 {
00084     if( this == &r )
00085         return *this;
00086 
00087     *d = *r.d;
00088 
00089     return *this;
00090 }
00091 
00092 TextAttributes::~TextAttributes()
00093 {
00094     delete _d; _d = 0;
00095 }
00096 
00097 
00098 bool TextAttributes::operator==( const TextAttributes& r ) const
00099 {
00100     // the following works around a bug in gcc 4.3.2
00101     // causing StyleHint to be set to Zero when copying a QFont
00102     const QFont myFont( font() );
00103     QFont r_font( r.font() );
00104     r_font.setStyleHint( myFont.styleHint(), myFont.styleStrategy() );
00105     return ( isVisible() == r.isVisible() &&
00106              myFont == r_font &&
00107              fontSize() == r.fontSize() &&
00108              minimalFontSize() == r.minimalFontSize() &&
00109              autoRotate() == r.autoRotate() &&
00110              autoShrink() == r.autoShrink() &&
00111              rotation() == r.rotation() &&
00112              pen() == r.pen() &&
00113              textDocument() == r.textDocument() );
00114 }
00115 
00116 
00117 void TextAttributes::setVisible( bool visible )
00118 {
00119     d->visible = visible;
00120 }
00121 
00122 bool TextAttributes::isVisible() const
00123 {
00124     return d->visible;
00125 }
00126 
00127 void TextAttributes::setFont( const QFont& font )
00128 {
00129     d->font       = font;
00130     d->cachedFont = font; // note: we do not set the font's size here, but in calculatedFont()
00131     d->cachedFontSize = -1.0;
00132 }
00133 
00134 QFont TextAttributes::font() const
00135 {
00136     return d->font;
00137 }
00138 
00139 void TextAttributes::setFontSize( const Measure & measure )
00140 {
00141     d->fontSize = measure;
00142 }
00143 
00144 Measure TextAttributes::fontSize() const
00145 {
00146     return d->fontSize;
00147 }
00148 
00149 void TextAttributes::setMinimalFontSize( const Measure & measure )
00150 {
00151     d->minimalFontSize = measure;
00152 }
00153 
00154 Measure TextAttributes::minimalFontSize() const
00155 {
00156     return d->minimalFontSize;
00157 }
00158 
00159 bool TextAttributes::hasAbsoluteFontSize() const
00160 {
00161     return d->fontSize.calculationMode() == KDChartEnums::MeasureCalculationModeAbsolute
00162         && d->minimalFontSize.calculationMode() == KDChartEnums::MeasureCalculationModeAbsolute;
00163 }
00164 
00165 
00166 #if QT_VERSION < 0x040400 || defined(Q_COMPILER_MANGLES_RETURN_TYPE)
00167 const
00168 #endif
00169 qreal TextAttributes::calculatedFontSize(
00170         const QObject*                   autoReferenceArea,
00171         KDChartEnums::MeasureOrientation autoReferenceOrientation ) const
00172 {
00173     const qreal normalSize  = fontSize().calculatedValue( autoReferenceArea, autoReferenceOrientation );
00174     const qreal minimalSize = minimalFontSize().calculatedValue( autoReferenceArea, autoReferenceOrientation );
00175     return qMax( normalSize, minimalSize );
00176 }
00177 
00178 
00179 const QFont TextAttributes::calculatedFont( const QObject* autoReferenceArea,
00180                                             KDChartEnums::MeasureOrientation autoReferenceOrientation ) const
00181 {
00182     qreal size = calculatedFontSize( autoReferenceArea, autoReferenceOrientation );
00183 
00184     const CartesianCoordinatePlane* plane = qobject_cast< const CartesianCoordinatePlane* >( autoReferenceArea );
00185     if ( plane  && plane->hasFixedDataCoordinateSpaceRelation() ) {
00186         // FIXME (KDCH-514) make sure to return the same size as last time for this plane
00187         //       note that a proper fix might have to be implemented somewhere else, not here
00188     }
00189 
00190     if ( size > 0.0 && d->cachedFontSize != size ) {
00191         d->cachedFontSize = size;
00192         d->cachedFont.setPointSizeF( d->cachedFontSize );
00193     }
00194 
00195     return d->cachedFont;
00196 }
00197 
00198 
00199 void TextAttributes::setAutoRotate( bool autoRotate )
00200 {
00201     d->autoRotate = autoRotate;
00202 }
00203 
00204 bool TextAttributes::autoRotate() const
00205 {
00206     return d->autoRotate;
00207 }
00208 
00209 void TextAttributes::setAutoShrink( bool autoShrink )
00210 {
00211     d->autoShrink = autoShrink;
00212 }
00213 
00214 bool TextAttributes::autoShrink() const
00215 {
00216     return d->autoShrink;
00217 }
00218 
00219 void TextAttributes::setRotation( int rotation )
00220 {
00221     d->hasRotation = true;
00222     d->rotation = rotation;
00223 }
00224 
00225 int TextAttributes::rotation() const
00226 {
00227     return d->rotation;
00228 }
00229 
00230 void TextAttributes::resetRotation()
00231 {
00232     d->hasRotation = false;
00233     d->rotation = 0;
00234 }
00235 
00236 bool TextAttributes::hasRotation() const
00237 {
00238     return d->hasRotation;
00239 }
00240 
00241 void TextAttributes::setPen( const QPen& pen )
00242 {
00243     d->pen = pen;
00244 }
00245 
00246 QPen TextAttributes::pen() const
00247 {
00248     return d->pen;
00249 }
00250 
00251 QTextDocument* TextAttributes::textDocument() const
00252 {
00253     return d->document.data();
00254 }
00255 
00256 void TextAttributes::setTextDocument(QTextDocument* document)
00257 {
00258     d->document = QSharedPointer<QTextDocument>(document);
00259 }
00260 
00261 #if !defined(QT_NO_DEBUG_STREAM)
00262 QDebug operator<<(QDebug dbg, const KDChart::TextAttributes& ta)
00263 {
00264     dbg << "KDChart::TextAttributes("
00265     << "visible=" << ta.isVisible()
00266     << "font=" << ta.font().toString() /* What? No QDebug for QFont? */
00267     << "fontsize=" << ta.fontSize()
00268     << "minimalfontsize=" << ta.minimalFontSize()
00269     << "autorotate=" << ta.autoRotate()
00270     << "autoshrink=" << ta.autoShrink()
00271     << "rotation=" << ta.rotation()
00272     << "pen=" << ta.pen()
00273     << ")";
00274     return dbg;
00275 }
00276 #endif /* QT_NO_DEBUG_STREAM */
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