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Diffstat (limited to 'examples/scrollview/scrollview.cpp')
-rw-r--r-- | examples/scrollview/scrollview.cpp | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/examples/scrollview/scrollview.cpp b/examples/scrollview/scrollview.cpp new file mode 100644 index 000000000..994cd292c --- /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 TQt. 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 TQFrame { + Q_OBJECT +public: + BigShrinker(TQWidget* parent) : + TQFrame(parent) + { + setFrameStyle(TQFrame::Box|TQFrame::Sunken); + int h=35; + int b=0; + for (int y=0; y<2000-h; y+=h+10) { + if (y == 0) { + TQButton* q=new TQPushButton("Quit", this); + connect(q, SIGNAL(clicked()), qApp, SLOT(tquit())); + } else { + TQString str; + if ( b > 0 ) { + str.sprintf("Button %d", b++); + } else { + str = "I'm shrinking!"; + ++b; + } + (new TQPushButton(str, this))->move(y/2,y); + } + } + resize(1000,2000); + + startTimer(250); + } + + void timerEvent(TQTimerEvent*) + { + int w=width(); + int h=height(); + if ( w > 50 ) w -= 1; + if ( h > 50 ) h -= 2; + resize(w,h); + } + + void mouseReleaseEvent(TQMouseEvent* e) + { + emit clicked(e->x(), e->y()); + } + +signals: + void clicked(int,int); +}; + +class BigMatrix : public TQScrollView { + TQMultiLineEdit *dragging; +public: + BigMatrix(TQWidget* parent) : + TQScrollView(parent,"matrix", WStaticContents), + bg("bg.ppm") + { + bg.load("bg.ppm"); + resizeContents(400000,300000); + + dragging = 0; + } + + void viewportMousePressEvent(TQMouseEvent* e) + { + int x, y; + viewportToContents( e->x(), e->y(), x, y ); + dragging = new TQMultiLineEdit(viewport(),"Another"); + dragging->setText("Thanks!"); + dragging->resize(100,100); + addChild(dragging, x, y); + showChild(dragging); + } + + void viewportMouseReleaseEvent(TQMouseEvent*) + { + dragging = 0; + } + + void viewportMouseMoveEvent(TQMouseEvent* 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; + TQString msg; + msg.sprintf("at (%d,%d) %d by %d",cx,cy,w,h); + dragging->setText(msg); + dragging->resize(w,h); + } + } + +protected: + void drawContents(TQPainter* 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, TQColor(240,222,208)); + } + + // The Numbers + { + TQFontMetrics 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; + TQString 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(TQFont("Charter",30)); + p->setPen(red); + TQString 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(TQFont("Charter",100)); + p->setPen(blue); + p->drawText(215000-500,115000-100,1000,200,AlignCenter,"YOU WIN!!!!!"); + } + } + } + +private: + TQPixmap bg; +}; + +class ScrollViewExample : public TQWidget { + Q_OBJECT + +public: + ScrollViewExample(int technique, TQWidget* parent=0, const char* name=0) : + TQWidget(parent,name) + { + TQMenuBar* menubar = new TQMenuBar(this); + Q_CHECK_PTR( menubar ); + + TQPopupMenu* file = new TQPopupMenu( menubar ); + Q_CHECK_PTR( file ); + menubar->insertItem( "&File", file ); + file->insertItem( "Quit", qApp, SLOT(tquit()) ); + + vp_options = new TQPopupMenu( 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 TQScrollView(this); + BigShrinker *bs = new BigShrinker(0);//(vp->viewport()); + vp->addChild(bs); + bs->setAcceptDrops(TRUE); + TQObject::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++) { + TQMultiLineEdit *l = new TQMultiLineEdit(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 TQPopupMenu( 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|TQFrame::Box ); + f_options->insertItem( "Panel", style_id|TQFrame::Panel ); + f_options->insertItem( "WinPanel", style_id|TQFrame::WinPanel ); + f_options->insertSeparator(); + f_options->insertItem( "Plain", style_id|TQFrame::Plain ); + f_options->insertItem( "Raised", style_id|TQFrame::Raised ); + f_laststyle = f_options->indexOf( + f_options->insertItem( "Sunken", style_id|TQFrame::Sunken )); + f_options->insertSeparator(); + lw_options = new TQPopupMenu( menubar ); + Q_CHECK_PTR( lw_options ); + lw_options->setCheckable( TRUE ); + for (int lw = 1; lw <= max_lw; lw++) { + TQString 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 TQPopupMenu( menubar ); + Q_CHECK_PTR( mlw_options ); + mlw_options->setCheckable( TRUE ); + for (int mlw = 0; mlw <= max_mlw; mlw++) { + TQString 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 TQPopupMenu( menubar ); + Q_CHECK_PTR( mw_options ); + mw_options->setCheckable( TRUE ); + for (int mw = 0; mw <= max_mw; mw++) { + TQString 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(); + + TQVBoxLayout* vbox = new TQVBoxLayout(this); + vbox->setMenuBar(menubar); + menubar->setSeparator(TQMenuBar::InWindowsStyle); + vbox->addWidget(vp); + vbox->activate(); + + corner = new TQSizeGrip(this); + corner->hide(); + } + +private slots: + void doVPMenuItem(int id) + { + if (id == vauto_id ) { + vp->setVScrollBarMode(TQScrollView::Auto); + } else if (id == vaoff_id) { + vp->setVScrollBarMode(TQScrollView::AlwaysOff); + } else if (id == vaon_id) { + vp->setVScrollBarMode(TQScrollView::AlwaysOn); + } else if (id == hauto_id) { + vp->setHScrollBarMode(TQScrollView::Auto); + } else if (id == haoff_id) { + vp->setHScrollBarMode(TQScrollView::AlwaysOff); + } else if (id == haon_id) { + vp->setHScrollBarMode(TQScrollView::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() + { + TQScrollView::ScrollBarMode vm = vp->vScrollBarMode(); + vp_options->setItemChecked( vauto_id, vm == TQScrollView::Auto ); + vp_options->setItemChecked( vaoff_id, vm == TQScrollView::AlwaysOff ); + vp_options->setItemChecked( vaon_id, vm == TQScrollView::AlwaysOn ); + + TQScrollView::ScrollBarMode hm = vp->hScrollBarMode(); + vp_options->setItemChecked( hauto_id, hm == TQScrollView::Auto ); + vp_options->setItemChecked( haoff_id, hm == TQScrollView::AlwaysOff ); + vp_options->setItemChecked( haon_id, hm == TQScrollView::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 & TQFrame::MShape) { + sty = vp->frameStyle()&TQFrame::MShadow; + sty = (sty ? sty : TQFrame::Plain) | (id&TQFrame::MShape); + } else { + sty = vp->frameStyle()&TQFrame::MShape; + sty = (sty ? sty : TQFrame::Box) | (id&TQFrame::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 & TQFrame::MShape) + f_options->setItemChecked( id, + ((id&TQFrame::MShape) == (sty&TQFrame::MShape)) ); + else + f_options->setItemChecked( id, + ((id&TQFrame::MShadow) == (sty&TQFrame::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: + TQScrollView* vp; + TQPopupMenu* vp_options; + TQPopupMenu* f_options; + TQPopupMenu* lw_options; + TQPopupMenu* mlw_options; + TQPopupMenu* mw_options; + TQSizeGrip* 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 ) +{ + TQApplication a( argc, argv ); + + ScrollViewExample ve1(1,0,"ve1"); + ScrollViewExample ve2(2,0,"ve2"); + ScrollViewExample ve3(3,0,"ve3"); + ve1.setCaption("TQt Example - Scrollviews"); + ve1.show(); + ve2.setCaption("TQt Example - Scrollviews"); + ve2.show(); + ve3.setCaption("TQt Example - Scrollviews"); + ve3.show(); + + TQObject::connect(qApp, SIGNAL(lastWindowClosed()), qApp, SLOT(tquit())); + + return a.exec(); +} + +#include "scrollview.moc" |