Add Qt3 development HEAD version

1 files changed, 441 insertions, 0 deletions

diff --git a/examples/scrollview/scrollview.cpp b/examples/scrollview/scrollview.cpp
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--- /dev/null
+++ b/examples/scrollview/scrollview.cpp
@@ -0,0 +1,441 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include <qscrollview.h>
+#include <qapplication.h>
+#include <qmenubar.h>
+#include <qpopupmenu.h>
+#include <qpushbutton.h>
+#include <qpainter.h>
+#include <qpixmap.h>
+#include <qmessagebox.h>
+#include <qlayout.h>
+#include <qlabel.h>
+#include <qmultilineedit.h>
+#include <qsizegrip.h>
+#include <stdlib.h>
+
+
+static const int style_id	= 0x1000;
+static const int lw_id		= 0x2000;
+static const int mlw_id		= 0x4000;
+static const int mw_id		= 0x8000;
+static const int max_lw		= 16;
+static const int max_mlw	= 5;
+static const int max_mw		= 10;
+
+
+class BigShrinker : public QFrame {
+    Q_OBJECT
+public:
+    BigShrinker(QWidget* parent) :
+	QFrame(parent)
+    {
+	setFrameStyle(QFrame::Box|QFrame::Sunken);
+	int h=35;
+	int b=0;
+	for (int y=0; y<2000-h; y+=h+10) {
+	    if (y == 0) {
+		QButton* q=new QPushButton("Quit", this);
+		connect(q, SIGNAL(clicked()), qApp, SLOT(quit()));
+	    } else {
+		QString str;
+		if ( b > 0 ) {
+		    str.sprintf("Button %d", b++);
+		} else {
+		    str = "I'm shrinking!";
+		    ++b;
+		}
+		(new QPushButton(str, this))->move(y/2,y);
+	    }
+	}
+	resize(1000,2000);
+
+	startTimer(250);
+    }
+
+    void timerEvent(QTimerEvent*)
+    {
+	int w=width();
+	int h=height();
+	if ( w > 50 ) w -= 1;
+	if ( h > 50 ) h -= 2;
+	resize(w,h);
+    }
+
+    void mouseReleaseEvent(QMouseEvent* e)
+    {
+	emit clicked(e->x(), e->y());
+    }
+
+signals:
+    void clicked(int,int);
+};
+
+class BigMatrix : public QScrollView {
+    QMultiLineEdit *dragging;
+public:
+    BigMatrix(QWidget* parent) :
+	QScrollView(parent,"matrix", WStaticContents),
+	bg("bg.ppm")
+    {
+	bg.load("bg.ppm");
+	resizeContents(400000,300000);
+
+	dragging = 0;
+    }
+
+    void viewportMousePressEvent(QMouseEvent* e)
+    {
+	int x, y;
+	viewportToContents( e->x(),  e->y(), x, y );
+	dragging = new QMultiLineEdit(viewport(),"Another");
+	dragging->setText("Thanks!");
+	dragging->resize(100,100);
+	addChild(dragging, x, y);
+	showChild(dragging);
+    }
+
+    void viewportMouseReleaseEvent(QMouseEvent*)
+    {
+	dragging = 0;
+    }
+
+    void viewportMouseMoveEvent(QMouseEvent* e)
+    {
+	if ( dragging ) {
+	    int mx, my;
+	    viewportToContents( e->x(),  e->y(), mx, my );
+	    int cx = childX(dragging);
+	    int cy = childY(dragging);
+	    int w = mx - cx + 1;
+	    int h = my - cy + 1;
+	    QString msg;
+	    msg.sprintf("at (%d,%d) %d by %d",cx,cy,w,h);
+	    dragging->setText(msg);
+	    dragging->resize(w,h);
+	}
+    }
+
+protected:
+    void drawContents(QPainter* p, int cx, int cy, int cw, int ch)
+    {
+	// The Background
+	if ( !bg.isNull() ) {
+	    int rowheight=bg.height();
+	    int toprow=cy/rowheight;
+	    int bottomrow=(cy+ch+rowheight-1)/rowheight;
+	    int colwidth=bg.width();
+	    int leftcol=cx/colwidth;
+	    int rightcol=(cx+cw+colwidth-1)/colwidth;
+	    for (int r=toprow; r<=bottomrow; r++) {
+		int py=r*rowheight;
+		for (int c=leftcol; c<=rightcol; c++) {
+		    int px=c*colwidth;
+		    p->drawPixmap(px, py, bg);
+		}
+	    }
+	} else {
+	    p->fillRect(cx, cy, cw, ch, QColor(240,222,208));
+	}
+
+	// The Numbers
+	{
+	    QFontMetrics fm=p->fontMetrics();
+	    int rowheight=fm.lineSpacing();
+	    int toprow=cy/rowheight;
+	    int bottomrow=(cy+ch+rowheight-1)/rowheight;
+	    int colwidth=fm.width("00000,000000 ")+3;
+	    int leftcol=cx/colwidth;
+	    int rightcol=(cx+cw+colwidth-1)/colwidth;
+	    QString str;
+	    for (int r=toprow; r<=bottomrow; r++) {
+		int py=r*rowheight;
+		for (int c=leftcol; c<=rightcol; c++) {
+		    int px=c*colwidth;
+		    str.sprintf("%d,%d",c,r);
+		    p->drawText(px+3, py+fm.ascent(), str);
+		}
+	    }
+
+	    // The Big Hint
+	    if (leftcol<10 && toprow<5) {
+		p->setFont(QFont("Charter",30));
+		p->setPen(red);
+		QString text;
+		text.sprintf("HINT:  Look at %d,%d",215000/colwidth,115000/rowheight);
+		p->drawText(100,50,text);
+	    }
+	}
+
+	// The Big X
+	{
+	    if (cx+cw>200000 && cy+ch>100000 && cx<230000 && cy<130000) {
+		// Note that some X server cannot even handle co-ordinates
+		// beyond about 4000, so you might not see this.
+		p->drawLine(200000,100000,229999,129999);
+		p->drawLine(229999,100000,200000,129999);
+
+		// X marks the spot!
+		p->setFont(QFont("Charter",100));
+		p->setPen(blue);
+		p->drawText(215000-500,115000-100,1000,200,AlignCenter,"YOU WIN!!!!!");
+	    }
+	}
+    }
+
+private:
+    QPixmap bg;
+};
+
+class ScrollViewExample : public QWidget {
+    Q_OBJECT
+
+public:
+    ScrollViewExample(int technique, QWidget* parent=0, const char* name=0) :
+	QWidget(parent,name)
+    {
+	QMenuBar* menubar = new QMenuBar(this);
+	Q_CHECK_PTR( menubar );
+
+	QPopupMenu* file = new QPopupMenu( menubar );
+	Q_CHECK_PTR( file );
+	menubar->insertItem( "&File", file );
+	file->insertItem( "Quit", qApp,  SLOT(quit()) );
+
+	vp_options = new QPopupMenu( menubar );
+	Q_CHECK_PTR( vp_options );
+	vp_options->setCheckable( TRUE );
+	menubar->insertItem( "&ScrollView", vp_options );
+	connect( vp_options, SIGNAL(activated(int)),
+	    this, SLOT(doVPMenuItem(int)) );
+
+	vauto_id = vp_options->insertItem( "Vertical Auto" );
+	vaoff_id = vp_options->insertItem( "Vertical AlwaysOff" );
+	vaon_id = vp_options->insertItem( "Vertical AlwaysOn" );
+	vp_options->insertSeparator();
+	hauto_id = vp_options->insertItem( "Horizontal Auto" );
+	haoff_id = vp_options->insertItem( "Horizontal AlwaysOff" );
+	haon_id = vp_options->insertItem( "Horizontal AlwaysOn" );
+	vp_options->insertSeparator();
+	corn_id = vp_options->insertItem( "cornerWidget" );
+
+	if (technique == 1) {
+	    vp = new QScrollView(this);
+	    BigShrinker *bs = new BigShrinker(0);//(vp->viewport());
+	    vp->addChild(bs);
+	    bs->setAcceptDrops(TRUE);
+	    QObject::connect(bs, SIGNAL(clicked(int,int)),
+			    vp, SLOT(center(int,int)));
+	} else {
+	    vp = new BigMatrix(this);
+	    if ( technique == 3 )
+		vp->enableClipper(TRUE);
+	    srand(1);
+	    for (int i=0; i<30; i++) {
+		QMultiLineEdit *l = new QMultiLineEdit(vp->viewport(),"First");
+		l->setText("Drag out more of these.");
+		l->resize(100,100);
+		vp->addChild(l, rand()%800, rand()%10000);
+	    }
+	    vp->viewport()->setBackgroundMode(NoBackground);
+	}
+
+	f_options = new QPopupMenu( menubar );
+	Q_CHECK_PTR( f_options );
+	f_options->setCheckable( TRUE );
+	menubar->insertItem( "F&rame", f_options );
+	connect( f_options, SIGNAL(activated(int)),
+	    this, SLOT(doFMenuItem(int)) );
+
+	f_options->insertItem( "No Frame", style_id );
+	f_options->insertItem( "Box", style_id|QFrame::Box );
+	f_options->insertItem( "Panel", style_id|QFrame::Panel );
+	f_options->insertItem( "WinPanel", style_id|QFrame::WinPanel );
+	f_options->insertSeparator();
+	f_options->insertItem( "Plain", style_id|QFrame::Plain );
+	f_options->insertItem( "Raised", style_id|QFrame::Raised );
+	f_laststyle = f_options->indexOf(
+	    f_options->insertItem( "Sunken", style_id|QFrame::Sunken ));
+	f_options->insertSeparator();
+	lw_options = new QPopupMenu( menubar );
+	Q_CHECK_PTR( lw_options );
+	lw_options->setCheckable( TRUE );
+	for (int lw = 1; lw <= max_lw; lw++) {
+	    QString str;
+	    str.sprintf("%d Pixels", lw);
+	    lw_options->insertItem( str, lw_id | lw );
+	}
+	f_options->insertItem( "Line Width", lw_options );
+	connect( lw_options, SIGNAL(activated(int)),
+	    this, SLOT(doFMenuItem(int)) );
+	mlw_options = new QPopupMenu( menubar );
+	Q_CHECK_PTR( mlw_options );
+	mlw_options->setCheckable( TRUE );
+	for (int mlw = 0; mlw <= max_mlw; mlw++) {
+	    QString str;
+	    str.sprintf("%d Pixels", mlw);
+	    mlw_options->insertItem( str, mlw_id | mlw );
+	}
+	f_options->insertItem( "Midline Width", mlw_options );
+	connect( mlw_options, SIGNAL(activated(int)),
+	    this, SLOT(doFMenuItem(int)) );
+	mw_options = new QPopupMenu( menubar );
+	Q_CHECK_PTR( mw_options );
+	mw_options->setCheckable( TRUE );
+	for (int mw = 0; mw <= max_mw; mw++) {
+	    QString str;
+	    str.sprintf("%d Pixels", mw);
+	    mw_options->insertItem( str, mw_id | mw );
+	}
+	f_options->insertItem( "Margin Width", mw_options );
+	connect( mw_options, SIGNAL(activated(int)),
+	    this, SLOT(doFMenuItem(int)) );
+
+	setVPMenuItems();
+	setFMenuItems();
+
+	QVBoxLayout* vbox = new QVBoxLayout(this);
+	vbox->setMenuBar(menubar);
+	menubar->setSeparator(QMenuBar::InWindowsStyle);
+	vbox->addWidget(vp);
+	vbox->activate();
+
+	corner = new QSizeGrip(this);
+	corner->hide();
+    }
+
+private slots:
+    void doVPMenuItem(int id)
+    {
+	if (id == vauto_id ) {
+	    vp->setVScrollBarMode(QScrollView::Auto);
+	} else if (id == vaoff_id) {
+	    vp->setVScrollBarMode(QScrollView::AlwaysOff);
+	} else if (id == vaon_id) {
+	    vp->setVScrollBarMode(QScrollView::AlwaysOn);
+	} else if (id == hauto_id) {
+	    vp->setHScrollBarMode(QScrollView::Auto);
+	} else if (id == haoff_id) {
+	    vp->setHScrollBarMode(QScrollView::AlwaysOff);
+	} else if (id == haon_id) {
+	    vp->setHScrollBarMode(QScrollView::AlwaysOn);
+	} else if (id == corn_id) {
+	    bool corn = !vp->cornerWidget();
+	    vp->setCornerWidget(corn ? corner : 0);
+	} else {
+	    return; // Not for us to process.
+	}
+	setVPMenuItems();
+    }
+
+    void setVPMenuItems()
+    {
+	QScrollView::ScrollBarMode vm = vp->vScrollBarMode();
+	vp_options->setItemChecked( vauto_id, vm == QScrollView::Auto );
+	vp_options->setItemChecked( vaoff_id, vm == QScrollView::AlwaysOff );
+	vp_options->setItemChecked( vaon_id, vm == QScrollView::AlwaysOn );
+
+	QScrollView::ScrollBarMode hm = vp->hScrollBarMode();
+	vp_options->setItemChecked( hauto_id, hm == QScrollView::Auto );
+	vp_options->setItemChecked( haoff_id, hm == QScrollView::AlwaysOff );
+	vp_options->setItemChecked( haon_id, hm == QScrollView::AlwaysOn );
+
+	vp_options->setItemChecked( corn_id, !!vp->cornerWidget() );
+    }
+
+    void doFMenuItem(int id)
+    {
+	if (id & style_id) {
+	    int sty;
+
+	    if (id == style_id) {
+		sty = 0;
+	    } else if (id & QFrame::MShape) {
+		sty = vp->frameStyle()&QFrame::MShadow;
+		sty = (sty ? sty : QFrame::Plain) | (id&QFrame::MShape);
+	    } else {
+		sty = vp->frameStyle()&QFrame::MShape;
+		sty = (sty ? sty : QFrame::Box) | (id&QFrame::MShadow);
+	    }
+	    vp->setFrameStyle(sty);
+	} else if (id & lw_id) {
+	    vp->setLineWidth(id&~lw_id);
+	} else if (id & mlw_id) {
+	    vp->setMidLineWidth(id&~mlw_id);
+	} else {
+	    vp->setMargin(id&~mw_id);
+	}
+
+	vp->update();
+	setFMenuItems();
+    }
+
+    void setFMenuItems()
+    {
+	int sty = vp->frameStyle();
+
+	f_options->setItemChecked( style_id, !sty );
+
+	for (int i=1; i <= f_laststyle; i++) {
+	    int id = f_options->idAt(i);
+	    if (id & QFrame::MShape)
+		f_options->setItemChecked( id,
+		    ((id&QFrame::MShape) == (sty&QFrame::MShape)) );
+	    else
+		f_options->setItemChecked( id,
+		    ((id&QFrame::MShadow) == (sty&QFrame::MShadow)) );
+	}
+
+	for (int lw=1; lw<=max_lw; lw++)
+	    lw_options->setItemChecked( lw_id|lw, vp->lineWidth() == lw );
+
+	for (int mlw=0; mlw<=max_mlw; mlw++)
+	    mlw_options->setItemChecked( mlw_id|mlw, vp->midLineWidth() == mlw );
+
+	for (int mw=0; mw<=max_mw; mw++)
+	    mw_options->setItemChecked( mw_id|mw, vp->margin() == mw );
+    }
+
+private:
+    QScrollView* vp;
+    QPopupMenu* vp_options;
+    QPopupMenu* f_options;
+    QPopupMenu* lw_options;
+    QPopupMenu* mlw_options;
+    QPopupMenu* mw_options;
+    QSizeGrip* corner;
+
+    int vauto_id, vaoff_id, vaon_id,
+	hauto_id, haoff_id, haon_id,
+	corn_id;
+
+    int f_laststyle;
+};
+
+int main( int argc, char **argv )
+{
+    QApplication a( argc, argv );
+
+    ScrollViewExample ve1(1,0,"ve1");
+    ScrollViewExample ve2(2,0,"ve2");
+    ScrollViewExample ve3(3,0,"ve3");
+    ve1.setCaption("Qt Example - Scrollviews");
+    ve1.show();
+    ve2.setCaption("Qt Example - Scrollviews");
+    ve2.show();
+    ve3.setCaption("Qt Example - Scrollviews");
+    ve3.show();
+
+    QObject::connect(qApp, SIGNAL(lastWindowClosed()), qApp, SLOT(quit()));
+
+    return a.exec();
+}
+
+#include "scrollview.moc"