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508 lines
13 KiB
508 lines
13 KiB
/****************************************************************************
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include <ntqapplication.h>
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#include <ntqdialog.h>
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#include <ntqlabel.h>
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#include <ntqlineedit.h>
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#include <ntqpushbutton.h>
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#include <ntqcheckbox.h>
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#include <ntqradiobutton.h>
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#include <ntqbuttongroup.h>
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#include <ntqlcdnumber.h>
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#include <ntqslider.h>
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#include <ntqmenubar.h>
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#include <ntqfontdialog.h>
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#include <ntqlayout.h>
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#include <ntqvbox.h>
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#include <ntqwidgetstack.h>
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#include <ntqpainter.h>
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#include <ntqpixmap.h>
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#include <ntqpicture.h>
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#include <stdlib.h>
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class ModeNames {
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public:
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enum Mode { Text, Image, Picture };
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};
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class XFormControl : public TQVBox, public ModeNames
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{
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TQ_OBJECT
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public:
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XFormControl( const TQFont &initialFont, TQWidget *parent=0, const char *name=0 );
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~XFormControl() {}
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TQWMatrix matrix();
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signals:
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void newMatrix( TQWMatrix );
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void newText( const TQString& );
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void newFont( const TQFont & );
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void newMode( int );
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private slots:
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void newMtx();
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void newTxt(const TQString&);
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void selectFont();
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void fontSelected( const TQFont & );
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void changeMode(int);
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void timerEvent(TQTimerEvent*);
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private:
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Mode mode;
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TQSlider *rotS; // Rotation angle scroll bar
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TQSlider *shearS; // Shear value scroll bar
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TQSlider *magS; // Magnification value scroll bar
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TQLCDNumber *rotLCD; // Rotation angle LCD display
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TQLCDNumber *shearLCD; // Shear value LCD display
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TQLCDNumber *magLCD; // Magnification value LCD display
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TQCheckBox *mirror; // Checkbox for mirror image on/of
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TQWidgetStack* optionals;
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TQLineEdit *textEd; // Inp[ut field for xForm text
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TQPushButton *fpb; // Select font push button
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TQRadioButton *rb_txt; // Radio button for text
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TQRadioButton *rb_img; // Radio button for image
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TQRadioButton *rb_pic; // Radio button for picture
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TQFont currentFont;
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};
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/*
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ShowXForm displays a text or a pixmap (TQPixmap) using a coordinate
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transformation matrix (TQWMatrix)
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*/
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class ShowXForm : public TQWidget, public ModeNames
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{
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TQ_OBJECT
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public:
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ShowXForm( const TQFont &f, TQWidget *parent=0, const char *name=0 );
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~ShowXForm() {}
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void showIt(); // (Re)displays text or pixmap
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Mode mode() const { return m; }
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public slots:
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void setText( const TQString& );
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void setMatrix( TQWMatrix );
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void setFont( const TQFont &f );
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void setPixmap( TQPixmap );
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void setPicture( const TQPicture& );
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void setMode( int );
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private:
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TQSizePolicy sizePolicy() const;
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TQSize sizeHint() const;
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void paintEvent( TQPaintEvent * );
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void resizeEvent( TQResizeEvent * );
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TQWMatrix mtx; // coordinate transform matrix
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TQString text; // text to be displayed
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TQPixmap pix; // pixmap to be displayed
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TQPicture picture; // text to be displayed
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TQRect eraseRect; // covers last displayed text/pixmap
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Mode m;
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};
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XFormControl::XFormControl( const TQFont &initialFont,
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TQWidget *parent, const char *name )
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: TQVBox( parent, name )
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{
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setSpacing(6);
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setMargin(6);
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currentFont = initialFont;
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mode = Image;
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rotLCD = new TQLCDNumber( 4, this, "rotateLCD" );
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rotS = new TQSlider( TQSlider::Horizontal, this,
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"rotateSlider" );
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shearLCD = new TQLCDNumber( 5,this, "shearLCD" );
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shearS = new TQSlider( TQSlider::Horizontal, this,
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"shearSlider" );
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mirror = new TQCheckBox( this, "mirrorCheckBox" );
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rb_txt = new TQRadioButton( this, "text" );
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rb_img = new TQRadioButton( this, "image" );
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rb_pic = new TQRadioButton( this, "picture" );
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optionals = new TQWidgetStack(this);
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TQVBox* optionals_text = new TQVBox(optionals);
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optionals_text->setSpacing(6);
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TQVBox* optionals_other = new TQVBox(optionals);
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optionals_other->setSpacing(6);
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optionals->addWidget(optionals_text,0);
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optionals->addWidget(optionals_other,1);
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fpb = new TQPushButton( optionals_text, "text" );
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textEd = new TQLineEdit( optionals_text, "text" );
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textEd->setFocus();
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rotLCD->display( " 0'" );
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rotS->setRange( -180, 180 );
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rotS->setValue( 0 );
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connect( rotS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
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shearLCD->display( "0.00" );
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shearS->setRange( -25, 25 );
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shearS->setValue( 0 );
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connect( shearS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
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mirror->setText( tr("Mirror") );
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connect( mirror, SIGNAL(clicked()), SLOT(newMtx()) );
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TQButtonGroup *bg = new TQButtonGroup(this);
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bg->hide();
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bg->insert(rb_txt,0);
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bg->insert(rb_img,1);
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bg->insert(rb_pic,2);
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rb_txt->setText( tr("Text") );
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rb_img->setText( tr("Image") );
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rb_img->setChecked(TRUE);
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rb_pic->setText( tr("Picture") );
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connect( bg, SIGNAL(clicked(int)), SLOT(changeMode(int)) );
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fpb->setText( tr("Select font...") );
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connect( fpb, SIGNAL(clicked()), SLOT(selectFont()) );
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textEd->setText( "Troll" );
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connect( textEd, SIGNAL(textChanged(const TQString&)),
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SLOT(newTxt(const TQString&)) );
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magLCD = new TQLCDNumber( 4,optionals_other, "magLCD" );
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magLCD->display( "100" );
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magS = new TQSlider( TQSlider::Horizontal, optionals_other,
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"magnifySlider" );
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magS->setRange( 0, 800 );
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connect( magS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
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magS->setValue( 0 );
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connect( magS, SIGNAL(valueChanged(int)), magLCD, SLOT(display(int)));
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optionals_text->adjustSize();
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optionals_other->adjustSize();
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changeMode(Image);
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startTimer(20); // start an initial animation
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}
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void XFormControl::timerEvent(TQTimerEvent*)
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{
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int v = magS->value();
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v = (v+2)+v/10;
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if ( v >= 200 ) {
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v = 200;
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killTimers();
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}
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magS->setValue(v);
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}
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/*
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Called whenever the user has changed one of the matrix parameters
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(i.e. rotate, shear or magnification)
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*/
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void XFormControl::newMtx()
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{
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emit newMatrix( matrix() );
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}
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void XFormControl::newTxt(const TQString& s)
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{
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emit newText(s);
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changeMode(Text);
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}
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/*
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Calculates the matrix appropriate for the current controls,
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and updates the displays.
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*/
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TQWMatrix XFormControl::matrix()
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{
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TQWMatrix m;
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if (mode != Text) {
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double magVal = 1.0*magS->value()/100;
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m.scale( magVal, magVal );
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}
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double shearVal = 1.0*shearS->value()/25;
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m.shear( shearVal, shearVal );
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m.rotate( rotS->value() );
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if ( mirror->isChecked() ) {
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m.scale( 1, -1 );
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m.rotate( 180 );
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}
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TQString tmp;
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tmp.sprintf( "%1.2f", shearVal );
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if ( shearVal >= 0 )
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tmp.insert( 0, " " );
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shearLCD->display( tmp );
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int rot = rotS->value();
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if ( rot < 0 )
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rot = rot + 360;
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tmp.sprintf( "%3i'", rot );
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rotLCD->display( tmp );
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return m;
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}
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void XFormControl::selectFont()
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{
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bool ok;
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TQFont f = TQFontDialog::getFont( &ok, currentFont );
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if ( ok ) {
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currentFont = f;
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fontSelected( f );
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}
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}
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void XFormControl::fontSelected( const TQFont &font )
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{
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emit newFont( font );
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changeMode(Text);
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}
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/*
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Sets the mode - Text, Image, or Picture.
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*/
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void XFormControl::changeMode(int m)
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{
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mode = (Mode)m;
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emit newMode( m );
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newMtx();
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if ( mode == Text ) {
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optionals->raiseWidget(0);
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rb_txt->setChecked(TRUE);
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} else {
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optionals->raiseWidget(1);
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if ( mode == Image )
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rb_img->setChecked(TRUE);
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else
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rb_pic->setChecked(TRUE);
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}
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tqApp->flushX();
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}
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ShowXForm::ShowXForm( const TQFont &initialFont,
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TQWidget *parent, const char *name )
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: TQWidget( parent, name, WResizeNoErase )
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{
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setFont( initialFont );
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setBackgroundColor( white );
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m = Text;
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eraseRect = TQRect( 0, 0, 0, 0 );
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}
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TQSizePolicy ShowXForm::sizePolicy() const
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{
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return TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding );
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}
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TQSize ShowXForm::sizeHint() const
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{
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return TQSize(400,400);
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}
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void ShowXForm::paintEvent( TQPaintEvent * )
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{
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showIt();
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}
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void ShowXForm::resizeEvent( TQResizeEvent * )
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{
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eraseRect = TQRect( width()/2, height()/2, 0, 0 );
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repaint(rect());
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}
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void ShowXForm::setText( const TQString& s )
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{
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text = s;
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showIt();
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}
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void ShowXForm::setMatrix( TQWMatrix w )
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{
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mtx = w;
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showIt();
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}
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void ShowXForm::setFont( const TQFont &f )
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{
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m = Text;
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TQWidget::setFont( f );
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}
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void ShowXForm::setPixmap( TQPixmap pm )
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{
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pix = pm;
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m = Image;
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showIt();
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}
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void ShowXForm::setPicture( const TQPicture& p )
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{
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picture = p;
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m = Picture;
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showIt();
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}
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void ShowXForm::setMode( int mode )
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{
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m = (Mode)mode;
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}
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void ShowXForm::showIt()
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{
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TQPainter p;
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TQRect r; // rectangle covering new text/pixmap in virtual coordinates
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TQWMatrix um; // copy user specified transform
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int textYPos = 0; // distance from boundingRect y pos to baseline
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int textXPos = 0; // distance from boundingRect x pos to text start
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TQRect br;
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TQFontMetrics fm( fontMetrics() ); // get widget font metrics
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switch ( mode() ) {
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case Text:
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br = fm.boundingRect( text ); // rectangle covering text
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r = br;
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textYPos = -r.y();
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textXPos = -r.x();
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br.moveTopLeft( TQPoint( -br.width()/2, -br.height()/2 ) );
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break;
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case Image:
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r = TQRect(0, 0, pix.width()+1, pix.height()+1);
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break;
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case Picture:
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// ### need TQPicture::boundingRect()
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r = TQRect(0,0,1000,1000);
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break;
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}
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r.moveTopLeft( TQPoint(-r.width()/2, -r.height()/2) );
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r.moveBy( -1, -1 ); // add border for matrix round off
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r.setSize( TQSize( r.width() + 2,r.height() + 2 ) );
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// compute union of new and old rect
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// the resulting rectangle will cover what is already displayed
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// and have room for the new text/pixmap
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eraseRect = eraseRect.unite( mtx.mapRect(r) );
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int pw = TQMIN(eraseRect.width(),width());
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int ph = TQMIN(eraseRect.height(),height());
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TQPixmap pm( pw, ph ); // off-screen drawing pixmap
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pm.fill( backgroundColor() );
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p.begin( &pm );
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um.translate( pw/2, ph/2 ); // 0,0 is center
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um = mtx * um;
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p.setWorldMatrix( um );
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switch ( mode() ) {
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case Text:
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p.setFont( font() ); // use widget font
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p.drawText( r.left() + textXPos, r.top() + textYPos, text );
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#if 0
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p.setPen( red );
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p.drawRect( br );
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#endif
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break;
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case Image:
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p.drawPixmap( -pix.width()/2, -pix.height()/2, pix );
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break;
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case Picture:
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// ### need TQPicture::boundingRect()
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p.scale(0.25,0.25);
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p.translate(-230,-180);
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p.drawPicture( picture );
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}
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p.end();
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int xpos = width()/2 - pw/2;
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int ypos = height()/2 - ph/2;
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bitBlt( this, xpos, ypos, // copy pixmap to widget
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&pm, 0, 0, -1, -1 );
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eraseRect = mtx.map( r );
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}
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/*
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Grand unifying widget, putting ShowXForm and XFormControl
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together.
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*/
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class XFormCenter : public TQHBox, public ModeNames
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{
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TQ_OBJECT
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public:
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XFormCenter( TQWidget *parent=0, const char *name=0 );
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public slots:
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void setFont( const TQFont &f ) { sx->setFont( f ); }
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void newMode( int );
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private:
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ShowXForm *sx;
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XFormControl *xc;
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};
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void XFormCenter::newMode( int m )
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{
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static bool first_i = TRUE;
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static bool first_p = TRUE;
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if ( sx->mode() == m )
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return;
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if ( m == Image && first_i ) {
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first_i = FALSE;
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TQPixmap pm;
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if ( pm.load( "image.any" ) )
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sx->setPixmap( pm );
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return;
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}
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if ( m == Picture && first_p ) {
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first_p = FALSE;
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TQPicture p;
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if (p.load( "picture.any" ))
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sx->setPicture( p );
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return;
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}
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sx->setMode(m);
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}
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XFormCenter::XFormCenter( TQWidget *parent, const char *name )
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: TQHBox( parent, name )
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{
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TQFont f( "Charter", 36, TQFont::Bold );
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xc = new XFormControl( f, this );
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sx = new ShowXForm( f, this );
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setStretchFactor(sx,1);
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xc->setFrameStyle( TQFrame::Panel | TQFrame::Raised );
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xc->setLineWidth( 2 );
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connect( xc, SIGNAL(newText(const TQString&)), sx,
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SLOT(setText(const TQString&)) );
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connect( xc, SIGNAL(newMatrix(TQWMatrix)),
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sx, SLOT(setMatrix(TQWMatrix)) );
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connect( xc, SIGNAL(newFont(const TQFont&)), sx,
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SLOT(setFont(const TQFont&)) );
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connect( xc, SIGNAL(newMode(int)), SLOT(newMode(int)) );
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sx->setText( "Troll" );
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newMode( Image );
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sx->setMatrix(xc->matrix());
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}
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int main( int argc, char **argv )
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{
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TQApplication a( argc, argv );
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XFormCenter *xfc = new XFormCenter;
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a.setMainWidget( xfc );
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xfc->setCaption("TQt Example - XForm");
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xfc->show();
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return a.exec();
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}
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#include "xform.moc" // include metadata generated by the moc
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