From d796c9dd933ab96ec83b9a634feedd5d32e1ba3f Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Tue, 8 Nov 2011 12:31:36 -0600 Subject: Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731 --- doc/html/xform-example.html | 559 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 559 insertions(+) create mode 100644 doc/html/xform-example.html (limited to 'doc/html/xform-example.html') diff --git a/doc/html/xform-example.html b/doc/html/xform-example.html new file mode 100644 index 000000000..d2d11ebd1 --- /dev/null +++ b/doc/html/xform-example.html @@ -0,0 +1,559 @@ + + + + + +Transformed Graphics Demo + + + + + + + +
Transformed Graphics Demo

+ + +
+This example lets the user rotate, shear and scale text and graphics +arbitrarily. +
Implementation: +
/****************************************************************************
+** $Id: qt/xform.cpp   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include <qapplication.h>
+
+#include <qdialog.h>
+#include <qlabel.h>
+#include <qlineedit.h>
+#include <qpushbutton.h>
+#include <qcheckbox.h>
+#include <qradiobutton.h>
+#include <qbuttongroup.h>
+#include <qlcdnumber.h>
+#include <qslider.h>
+#include <qmenubar.h>
+#include <qfontdialog.h>
+#include <qlayout.h>
+#include <qvbox.h>
+#include <qwidgetstack.h>
+
+#include <qpainter.h>
+#include <qpixmap.h>
+#include <qpicture.h>
+
+#include <stdlib.h>
+
+
+class ModeNames {
+public:
+    enum Mode { Text, Image, Picture };
+};
+
+
+class XFormControl : public TQVBox, public ModeNames
+{
+    Q_OBJECT
+public:
+    XFormControl( const TQFont &initialFont, TQWidget *parent=0, const char *name=0 );
+   ~XFormControl() {}
+
+    TQWMatrix matrix();
+
+signals:
+    void newMatrix( TQWMatrix );
+    void newText( const TQString& );
+    void newFont( const TQFont & );
+    void newMode( int );
+private slots:
+    void newMtx();
+    void newTxt(const TQString&);
+    void selectFont();
+    void fontSelected( const TQFont & );
+    void changeMode(int);
+    void timerEvent(TQTimerEvent*);
+private:
+    Mode mode;
+    TQSlider      *rotS;                // Rotation angle scroll bar
+    TQSlider      *shearS;              // Shear value scroll bar
+    TQSlider      *magS;                // Magnification value scroll bar
+    TQLCDNumber   *rotLCD;              // Rotation angle LCD display
+    TQLCDNumber   *shearLCD;            // Shear value LCD display
+    TQLCDNumber   *magLCD;              // Magnification value LCD display
+    TQCheckBox    *mirror;              // Checkbox for mirror image on/of
+    TQWidgetStack* optionals;
+    TQLineEdit    *textEd;              // Inp[ut field for xForm text
+    TQPushButton  *fpb;                 // Select font push button
+    TQRadioButton *rb_txt;              // Radio button for text
+    TQRadioButton *rb_img;              // Radio button for image
+    TQRadioButton *rb_pic;              // Radio button for picture
+    TQFont currentFont;
+};
+
+/*
+  ShowXForm displays a text or a pixmap (TQPixmap) using a coordinate
+  transformation matrix (TQWMatrix)
+*/
+
+class ShowXForm : public TQWidget, public ModeNames
+{
+    Q_OBJECT
+public:
+    ShowXForm( const TQFont &f, TQWidget *parent=0, const char *name=0 );
+   ~ShowXForm() {}
+    void showIt();                      // (Re)displays text or pixmap
+
+    Mode mode() const { return m; }
+public slots:
+    void setText( const TQString& );
+    void setMatrix( TQWMatrix );
+    void setFont( const TQFont &f );
+    void setPixmap( TQPixmap );
+    void setPicture( const TQPicture& );
+    void setMode( int );
+private:
+    TQSizePolicy sizePolicy() const;
+    TQSize sizeHint() const;
+    void paintEvent( TQPaintEvent * );
+    void resizeEvent( TQResizeEvent * );
+    TQWMatrix  mtx;                      // coordinate transform matrix
+    TQString   text;                     // text to be displayed
+    TQPixmap   pix;                      // pixmap to be displayed
+    TQPicture  picture;                  // text to be displayed
+    TQRect     eraseRect;                // covers last displayed text/pixmap
+    Mode      m;
+};
+
+XFormControl::XFormControl( const TQFont &initialFont,
+                            TQWidget *parent, const char *name )
+        : TQVBox( parent, name )
+{
+    setSpacing(6);
+    setMargin(6);
+    currentFont = initialFont;
+    mode = Image;
+
+    rotLCD      = new TQLCDNumber( 4, this, "rotateLCD" );
+    rotS        = new TQSlider( TQSlider::Horizontal, this,
+                                  "rotateSlider" );
+    shearLCD    = new TQLCDNumber( 5,this, "shearLCD" );
+    shearS      = new TQSlider( TQSlider::Horizontal, this,
+                                  "shearSlider" );
+    mirror      = new TQCheckBox( this, "mirrorCheckBox" );
+    rb_txt = new TQRadioButton( this, "text" );
+    rb_img = new TQRadioButton( this, "image" );
+    rb_pic = new TQRadioButton( this, "picture" );
+    optionals = new TQWidgetStack(this);
+    TQVBox* optionals_text = new TQVBox(optionals);
+    optionals_text->setSpacing(6);
+    TQVBox* optionals_other = new TQVBox(optionals);
+    optionals_other->setSpacing(6);
+    optionals->addWidget(optionals_text,0);
+    optionals->addWidget(optionals_other,1);
+    fpb         = new TQPushButton( optionals_text, "text" );
+    textEd      = new TQLineEdit( optionals_text, "text" );
+    textEd->setFocus();
+
+    rotLCD->display( "  0'" );
+
+    rotS->setRange( -180, 180 );
+    rotS->setValue( 0 );
+    connect( rotS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
+
+    shearLCD->display( "0.00" );
+
+    shearS->setRange( -25, 25 );
+    shearS->setValue( 0 );
+    connect( shearS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
+
+    mirror->setText( tr("Mirror") );
+    connect( mirror, SIGNAL(clicked()), SLOT(newMtx()) );
+
+    TQButtonGroup *bg = new TQButtonGroup(this);
+    bg->hide();
+    bg->insert(rb_txt,0);
+    bg->insert(rb_img,1);
+    bg->insert(rb_pic,2);
+    rb_txt->setText( tr("Text") );
+    rb_img->setText( tr("Image") );
+    rb_img->setChecked(TRUE);
+    rb_pic->setText( tr("Picture") );
+    connect( bg, SIGNAL(clicked(int)), SLOT(changeMode(int)) );
+
+    fpb->setText( tr("Select font...") );
+    connect( fpb, SIGNAL(clicked()), SLOT(selectFont()) );
+
+    textEd->setText( "Troll" );
+    connect( textEd, SIGNAL(textChanged(const TQString&)),
+                     SLOT(newTxt(const TQString&)) );
+
+    magLCD = new TQLCDNumber( 4,optionals_other, "magLCD" );
+    magLCD->display( "100" );
+    magS = new TQSlider( TQSlider::Horizontal, optionals_other,
+                           "magnifySlider" );
+    magS->setRange( 0, 800 );
+    connect( magS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
+    magS->setValue( 0 );
+    connect( magS, SIGNAL(valueChanged(int)), magLCD, SLOT(display(int)));
+
+    optionals_text->adjustSize();
+    optionals_other->adjustSize();
+    changeMode(Image);
+
+    startTimer(20); // start an initial animation
+}
+
+void XFormControl::timerEvent(TQTimerEvent*)
+{
+    int v = magS->value();
+    v = (v+2)+v/10;
+    if ( v >= 200 ) {
+        v = 200;
+        killTimers();
+    }
+    magS->setValue(v);
+}
+
+
+
+/*
+    Called whenever the user has changed one of the matrix parameters
+    (i.e. rotate, shear or magnification)
+*/
+void XFormControl::newMtx()
+{
+    emit newMatrix( matrix() );
+}
+
+void XFormControl::newTxt(const TQString& s)
+{
+    emit newText(s);
+    changeMode(Text);
+}
+
+/*
+    Calculates the matrix appropriate for the current controls,
+    and updates the displays.
+*/
+TQWMatrix XFormControl::matrix()
+{
+    TQWMatrix m;
+    if (mode != Text) {
+        double magVal = 1.0*magS->value()/100;
+        m.scale( magVal, magVal );
+    }
+    double shearVal = 1.0*shearS->value()/25;
+    m.shear( shearVal, shearVal );
+    m.rotate( rotS->value() );
+    if ( mirror->isChecked() ) {
+        m.scale( 1, -1 );
+        m.rotate( 180 );
+    }
+
+    TQString tmp;
+    tmp.sprintf( "%1.2f", shearVal  );
+    if ( shearVal >= 0 )
+        tmp.insert( 0, " " );
+    shearLCD->display( tmp );
+
+    int rot = rotS->value();
+    if ( rot < 0 )
+        rot = rot + 360;
+    tmp.sprintf( "%3i'", rot );
+    rotLCD->display( tmp );
+    return m;
+}
+
+
+void XFormControl::selectFont()
+{
+    bool ok;
+    TQFont f = TQFontDialog::getFont( &ok, currentFont );
+    if ( ok ) {
+        currentFont = f;
+        fontSelected( f );
+    }
+}
+
+void XFormControl::fontSelected( const TQFont &font )
+{
+    emit newFont( font );
+    changeMode(Text);
+}
+
+/*
+    Sets the mode - Text, Image, or Picture.
+*/
+
+void XFormControl::changeMode(int m)
+{
+    mode = (Mode)m;
+
+    emit newMode( m );
+    newMtx();
+    if ( mode == Text ) {
+        optionals->raiseWidget(0);
+        rb_txt->setChecked(TRUE);
+    } else {
+        optionals->raiseWidget(1);
+        if ( mode == Image )
+            rb_img->setChecked(TRUE);
+        else
+            rb_pic->setChecked(TRUE);
+    }
+    qApp->flushX();
+}
+
+ShowXForm::ShowXForm( const TQFont &initialFont,
+                      TQWidget *parent, const char *name )
+        : TQWidget( parent, name, WResizeNoErase )
+{
+    setFont( initialFont );
+    setBackgroundColor( white );
+    m = Text;
+    eraseRect = TQRect( 0, 0, 0, 0 );
+}
+
+TQSizePolicy ShowXForm::sizePolicy() const
+{
+    return TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding );
+}
+
+TQSize ShowXForm::sizeHint() const
+{
+    return TQSize(400,400);
+}
+
+void ShowXForm::paintEvent( TQPaintEvent * )
+{
+    showIt();
+}
+
+void ShowXForm::resizeEvent( TQResizeEvent * )
+{
+    eraseRect = TQRect( width()/2, height()/2, 0, 0 );
+    repaint(rect());
+}
+
+void ShowXForm::setText( const TQString& s )
+{
+    text = s;
+    showIt();
+}
+
+void ShowXForm::setMatrix( TQWMatrix w )
+{
+    mtx = w;
+    showIt();
+}
+
+void ShowXForm::setFont( const TQFont &f )
+{
+    m = Text;
+    TQWidget::setFont( f );
+}
+
+void ShowXForm::setPixmap( TQPixmap pm )
+{
+    pix  = pm;
+    m    = Image;
+    showIt();
+}
+
+void ShowXForm::setPicture( const TQPicture& p )
+{
+    picture = p;
+    m = Picture;
+    showIt();
+}
+
+void ShowXForm::setMode( int mode )
+{
+    m = (Mode)mode;
+}
+
+void ShowXForm::showIt()
+{
+    TQPainter p;
+    TQRect r;      // rectangle covering new text/pixmap in virtual coordinates
+    TQWMatrix um;  // copy user specified transform
+    int textYPos = 0; // distance from boundingRect y pos to baseline
+    int textXPos = 0; // distance from boundingRect x pos to text start
+    TQRect br;
+    TQFontMetrics fm( fontMetrics() );   // get widget font metrics
+    switch ( mode() ) {
+      case Text:
+        br = fm.boundingRect( text );   // rectangle covering text
+        r  = br;
+        textYPos = -r.y();
+        textXPos = -r.x();
+        br.moveTopLeft( TQPoint( -br.width()/2, -br.height()/2 ) );
+        break;
+      case Image:
+        r = TQRect(0, 0, pix.width()+1, pix.height()+1);
+        break;
+      case Picture:
+        // ### need TQPicture::boundingRect()
+        r = TQRect(0,0,1000,1000);
+        break;
+    }
+    r.moveTopLeft( TQPoint(-r.width()/2, -r.height()/2) );
+    r.moveBy( -1, -1 ); // add border for matrix round off
+    r.setSize( TQSize( r.width() + 2,r.height() + 2 ) );
+          // compute union of new and old rect
+          // the resulting rectangle will cover what is already displayed
+          // and have room for the new text/pixmap
+    eraseRect = eraseRect.unite( mtx.mapRect(r) );
+    int pw = TQMIN(eraseRect.width(),width());
+    int ph = TQMIN(eraseRect.height(),height());
+    TQPixmap pm( pw, ph );               // off-screen drawing pixmap
+    pm.fill( backgroundColor() );
+
+    p.begin( &pm );
+    um.translate( pw/2, ph/2 ); // 0,0 is center
+    um = mtx * um;
+    p.setWorldMatrix( um );
+    switch ( mode() ) {
+      case Text:
+        p.setFont( font() );            // use widget font
+        p.drawText( r.left() + textXPos, r.top() + textYPos, text );
+#if 0
+        p.setPen( red );
+        p.drawRect( br );
+#endif
+        break;
+    case Image:
+        p.drawPixmap( -pix.width()/2, -pix.height()/2, pix );
+        break;
+      case Picture:
+        // ### need TQPicture::boundingRect()
+        p.scale(0.25,0.25);
+        p.translate(-230,-180);
+        p.drawPicture( picture );
+    }
+    p.end();
+
+    int xpos = width()/2  - pw/2;
+    int ypos = height()/2 - ph/2;
+    bitBlt( this, xpos, ypos,                   // copy pixmap to widget
+            &pm, 0, 0, -1, -1 );
+    eraseRect =  mtx.map( r );
+}
+
+
+/*
+    Grand unifying widget, putting ShowXForm and XFormControl
+    together.
+*/
+
+class XFormCenter : public TQHBox, public ModeNames
+{
+    Q_OBJECT
+public:
+    XFormCenter( TQWidget *parent=0, const char *name=0 );
+public slots:
+    void setFont( const TQFont &f ) { sx->setFont( f ); }
+    void newMode( int );
+private:
+    ShowXForm   *sx;
+    XFormControl *xc;
+};
+
+void XFormCenter::newMode( int m )
+{
+    static bool first_i = TRUE;
+    static bool first_p = TRUE;
+
+    if ( sx->mode() == m )
+        return;
+    if ( m == Image && first_i ) {
+        first_i = FALSE;
+        TQPixmap pm;
+        if ( pm.load( "image.any" ) )
+            sx->setPixmap( pm );
+        return;
+    }
+    if ( m == Picture && first_p ) {
+        first_p = FALSE;
+        TQPicture p;
+        if (p.load( "picture.any" ))
+            sx->setPicture( p );
+        return;
+    }
+    sx->setMode(m);
+}
+
+XFormCenter::XFormCenter( TQWidget *parent, const char *name )
+    : TQHBox( parent, name )
+{
+    TQFont f( "Charter", 36, TQFont::Bold );
+
+    xc = new XFormControl( f, this );
+    sx = new ShowXForm( f, this );
+    setStretchFactor(sx,1);
+    xc->setFrameStyle( TQFrame::Panel | TQFrame::Raised );
+    xc->setLineWidth( 2 );
+    connect( xc, SIGNAL(newText(const TQString&)), sx,
+                 SLOT(setText(const TQString&)) );
+    connect( xc, SIGNAL(newMatrix(TQWMatrix)),
+             sx, SLOT(setMatrix(TQWMatrix)) );
+    connect( xc, SIGNAL(newFont(const TQFont&)), sx,
+                 SLOT(setFont(const TQFont&)) );
+    connect( xc, SIGNAL(newMode(int)), SLOT(newMode(int)) );
+    sx->setText( "Troll" );
+    newMode( Image );
+    sx->setMatrix(xc->matrix());
+}
+
+
+int main( int argc, char **argv )
+{
+    TQApplication a( argc, argv );
+
+    XFormCenter *xfc = new XFormCenter;
+
+    a.setMainWidget( xfc );
+    xfc->setCaption("TQt Example - XForm");
+    xfc->show();
+    return a.exec();
+}
+
+#include "xform.moc"                  // include metadata generated by the moc
+
+ +