src/qeffects.h

   1 #if 0
   2
   3 // Note: this file has been copied from the Qt source.
   4 // Those classes are normally used internally in Qt
   5 // but we need them for immitate the roll-over effect of QComboBox.
   6 //
   7 // Some class definitions have been moved from qeffects.cpp to this file.
   8 // They are framed with the comment "MOVED FROM qeffect.cpp"
   9
  10 /****************************************************************************
  11 ** $Id: qt/qeffects_p.h   3.3.4   edited May 27 2003 $
  12 **
  13 ** Definition of QEffects functions
  14 **
  15 ** Created : 000621
  16 **
  17 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
  18 **
  19 ** This file is part of the widgets module of the Qt GUI Toolkit.
  20 **
  21 ** This file may be distributed under the terms of the Q Public License
  22 ** as defined by Trolltech AS of Norway and appearing in the file
  23 ** LICENSE.QPL included in the packaging of this file.
  24 **
  25 ** This file may be distributed and/or modified under the terms of the
  26 ** GNU General Public License version 2 as published by the Free Software
  27 ** Foundation and appearing in the file LICENSE.GPL included in the
  28 ** packaging of this file.
  29 **
  30 ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
  31 ** licenses may use this file in accordance with the Qt Commercial License
  32 ** Agreement provided with the Software.
  33 **
  34 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  35 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  36 **
  37 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
  38 **   information about Qt Commercial License Agreements.
  39 ** See http://www.trolltech.com/qpl/ for QPL licensing information.
  40 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
  41 **
  42 ** Contact info@trolltech.com if any conditions of this licensing are
  43 ** not clear to you.
  44 **
  45 **********************************************************************/
  46
  47 #ifndef QEFFECTS_P_H
  48 #define QEFFECTS_P_H
  49
  50
  51 //
  52 //  W A R N I N G
  53 //  -------------
  54 //
  55 // This file is not part of the Qt API.  It exists for the convenience
  56 // of qeffects.cpp, qcombobox.cpp, qpopupmenu.cpp and qtooltip.cpp.
  57 // This header file may change from version to version without notice,
  58 // or even be removed.
  59 //
  60 // We mean it.
  61 //
  62 //
  63
  64 #ifndef QT_H
  65 #include "qnamespace.h"
  66 #endif // QT_H
  67
  68 #ifndef QT_NO_EFFECTS
  69 class QWidget;
  70
  71 struct QEffects
  72 {
  73         enum Direction {
  74                 LeftScroll      = 0x0001,
  75                 RightScroll     = 0x0002,
  76                 UpScroll        = 0x0004,
  77                 DownScroll      = 0x0008
  78         };
  79
  80         typedef uint DirFlags;
  81 };
  82
  83 extern void Q_EXPORT qScrollEffect( QWidget*, QEffects::DirFlags dir = QEffects::DownScroll, int time = -1 );
  84 extern void Q_EXPORT qFadeEffect( QWidget*, int time = -1 );
  85
  86
  87 /******************* MOVED FROM qeffect.cpp: */
  88
  89 #include "qguardedptr.h"
  90 #include "qdatetime.h"
  91 #include "qtimer.h"
  92 #include "qpixmap.h"
  93 #include "qimage.h"
  94
  95 /*
  96   Internal class to get access to protected QWidget-members
  97 */
  98
  99 class QAccessWidget : public QWidget
 100 {
 101         friend class QAlphaWidget;
 102         friend class QRollEffect;
 103         public:
 104                 QAccessWidget( QWidget* parent=0, const char* name=0, WFlags f = 0 )
 105         : QWidget( parent, name, f ) {}
 106 };
 107
 108 /*
 109   Internal class QAlphaWidget.
 110
 111   The QAlphaWidget is shown while the animation lasts
 112   and displays the pixmap resulting from the alpha blending.
 113 */
 114
 115 class QAlphaWidget: public QWidget, private QEffects
 116 {
 117         Q_OBJECT
 118         public:
 119                 QAlphaWidget( QWidget* w, WFlags f = 0 );
 120
 121                 void run( int time );
 122
 123         protected:
 124                 void paintEvent( QPaintEvent* e );
 125                 void closeEvent( QCloseEvent* );
 126                 bool eventFilter( QObject* o, QEvent* e );
 127                 void alphaBlend();
 128
 129         protected slots:
 130                 void render();
 131
 132         private:
 133                 QPixmap pm;
 134                 double alpha;
 135                 QImage back;
 136                 QImage front;
 137                 QImage mixed;
 138                 QGuardedPtr<QAccessWidget> widget;
 139                 int duration;
 140                 int elapsed;
 141                 bool showWidget;
 142                 QTimer anim;
 143                 QTime checkTime;
 144 };
 145
 146 /*
 147   Internal class QRollEffect
 148
 149   The QRollEffect widget is shown while the animation lasts
 150   and displays a scrolling pixmap.
 151 */
 152
 153 class QRollEffect : public QWidget, private QEffects
 154 {
 155         Q_OBJECT
 156         public:
 157                 QRollEffect( QWidget* w, WFlags f, DirFlags orient );
 158
 159                 void run( int time );
 160
 161         protected:
 162                 void paintEvent( QPaintEvent* );
 163                 bool eventFilter( QObject*, QEvent* );
 164                 void closeEvent( QCloseEvent* );
 165
 166         private slots:
 167                 void scroll();
 168
 169         private:
 170                 QGuardedPtr<QAccessWidget> widget;
 171
 172                 int currentHeight;
 173                 int currentWidth;
 174                 int totalHeight;
 175                 int totalWidth;
 176
 177                 int duration;
 178                 int elapsed;
 179                 bool done;
 180                 bool showWidget;
 181                 int orientation;
 182
 183                 QTimer anim;
 184                 QTime checkTime;
 185
 186                 QPixmap pm;
 187 };
 188
 189 /******************************/
 190
 191 #endif // QT_NO_EFFECTS
 192
 193 #endif // QEFFECTS_P_H
 194
 195 #endif // #if 0