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338 lines
7.4 KiB
338 lines
7.4 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 <ntqprogressdialog.h>
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#include <ntqapplication.h>
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#include <ntqmenubar.h>
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#include <ntqpopupmenu.h>
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#include <ntqpainter.h>
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#include <stdlib.h>
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class AnimatedThingy : public TQLabel {
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public:
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AnimatedThingy( TQWidget* parent, const TQString& s ) :
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TQLabel(parent),
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label(s),
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step(0)
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{
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setBackgroundColor(white);
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label+="\n... and wasting CPU\nwith this animation!\n";
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for (int i=0; i<nqix; i++)
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ox[0][i] = oy[0][i] = ox[1][i] = oy[1][i] = 0;
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x0 = y0 = x1 = y1 = 0;
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dx0 = rand()%8+2;
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dy0 = rand()%8+2;
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dx1 = rand()%8+2;
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dy1 = rand()%8+2;
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}
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void show()
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{
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if (!isVisible()) startTimer(100);
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TQWidget::show();
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}
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void hide()
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{
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TQWidget::hide();
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killTimers();
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}
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TQSize sizeHint() const
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{
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return TQSize(120,100);
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}
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protected:
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void timerEvent(TQTimerEvent*)
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{
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TQPainter p(this);
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TQPen pn=p.pen();
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pn.setWidth(2);
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pn.setColor(backgroundColor());
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p.setPen(pn);
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step = (step + 1) % nqix;
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p.drawLine(ox[0][step], oy[0][step], ox[1][step], oy[1][step]);
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inc(x0, dx0, width());
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inc(y0, dy0, height());
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inc(x1, dx1, width());
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inc(y1, dy1, height());
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ox[0][step] = x0;
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oy[0][step] = y0;
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ox[1][step] = x1;
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oy[1][step] = y1;
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TQColor c;
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c.setHsv( (step*255)/nqix, 255, 255 ); // rainbow effect
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pn.setColor(c);
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p.setPen(pn);
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p.drawLine(ox[0][step], oy[0][step], ox[1][step], oy[1][step]);
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p.setPen(colorGroup().text());
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p.drawText(rect(), AlignCenter, label);
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}
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void paintEvent(TQPaintEvent* event)
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{
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TQPainter p(this);
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TQPen pn=p.pen();
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pn.setWidth(2);
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p.setPen(pn);
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p.setClipRect(event->rect());
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for (int i=0; i<nqix; i++) {
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TQColor c;
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c.setHsv( (i*255)/nqix, 255, 255 ); // rainbow effect
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pn.setColor(c);
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p.setPen(pn);
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p.drawLine(ox[0][i], oy[0][i], ox[1][i], oy[1][i]);
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}
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p.setPen(colorGroup().text());
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p.drawText(rect(), AlignCenter, label);
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}
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private:
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void inc(int& x, int& dx, int b)
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{
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x+=dx;
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if (x<0) { x=0; dx=rand()%8+2; }
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else if (x>=b) { x=b-1; dx=-(rand()%8+2); }
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}
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enum {nqix=10};
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int ox[2][nqix];
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int oy[2][nqix];
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int x0,y0,x1,y1;
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int dx0,dy0,dx1,dy1;
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TQString label;
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int step;
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};
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class CPUWaster : public TQWidget
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{
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TQ_OBJECT
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enum { first_draw_item = 1000, last_draw_item = 1006 };
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int drawItemRects(int id)
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{
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int n = id - first_draw_item;
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int r = 100;
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while (n--) r*=(n%3 ? 5 : 4);
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return r;
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}
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TQString drawItemText(int id)
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{
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TQString str;
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str.sprintf("%d Rectangles", drawItemRects(id));
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return str;
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}
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public:
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CPUWaster() :
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pb(0)
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{
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menubar = new TQMenuBar( this, "menu" );
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TQ_CHECK_PTR( menubar );
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TQPopupMenu* file = new TQPopupMenu();
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TQ_CHECK_PTR( file );
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menubar->insertItem( "&File", file );
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for (int i=first_draw_item; i<=last_draw_item; i++)
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file->insertItem( drawItemText(i), i );
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connect( menubar, SIGNAL(activated(int)), this, SLOT(doMenuItem(int)) );
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file->insertSeparator();
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file->insertItem( "Quit", tqApp, SLOT(quit()) );
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options = new TQPopupMenu();
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TQ_CHECK_PTR( options );
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menubar->insertItem( "&Options", options );
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td_id = options->insertItem( "Timer driven", this, SLOT(timerDriven()) );
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ld_id = options->insertItem( "Loop driven", this, SLOT(loopDriven()) );
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options->insertSeparator();
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dl_id = options->insertItem( "Default label", this, SLOT(defaultLabel()) );
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cl_id = options->insertItem( "Custom label", this, SLOT(customLabel()) );
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options->insertSeparator();
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md_id = options->insertItem( "No minimum duration", this, SLOT(toggleMinimumDuration()) );
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options->setCheckable( TRUE );
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loopDriven();
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defaultLabel();
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setFixedSize( 400, 300 );
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setBackgroundColor( black );
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}
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public slots:
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void doMenuItem(int id)
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{
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if (id >= first_draw_item && id <= last_draw_item)
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draw(drawItemRects(id));
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}
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void stopDrawing() { got_stop = TRUE; }
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void timerDriven()
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{
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timer_driven = TRUE;
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options->setItemChecked( td_id, TRUE );
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options->setItemChecked( ld_id, FALSE );
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}
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void loopDriven()
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{
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timer_driven = FALSE;
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options->setItemChecked( ld_id, TRUE );
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options->setItemChecked( td_id, FALSE );
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}
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void defaultLabel()
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{
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default_label = TRUE;
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options->setItemChecked( dl_id, TRUE );
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options->setItemChecked( cl_id, FALSE );
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}
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void customLabel()
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{
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default_label = FALSE;
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options->setItemChecked( dl_id, FALSE );
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options->setItemChecked( cl_id, TRUE );
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}
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void toggleMinimumDuration()
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{
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options->setItemChecked( md_id,
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!options->isItemChecked( md_id ) );
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}
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private:
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void timerEvent( TQTimerEvent* )
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{
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if (!got_stop)
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pb->setProgress( pb->totalSteps() - rects );
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rects--;
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{
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TQPainter p(this);
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int ww = width();
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int wh = height();
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if ( ww > 8 && wh > 8 ) {
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TQColor c(rand()%255, rand()%255, rand()%255);
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int x = rand() % (ww-8);
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int y = rand() % (wh-8);
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int w = rand() % (ww-x);
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int h = rand() % (wh-y);
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p.fillRect( x, y, w, h, c );
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}
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}
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if (!rects || got_stop) {
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if (!got_stop)
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pb->setProgress( pb->totalSteps() );
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TQPainter p(this);
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p.fillRect(0, 0, width(), height(), backgroundColor());
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enableDrawingItems(TRUE);
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killTimers();
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delete pb;
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pb = 0;
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}
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}
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TQProgressDialog* newProgressDialog( const char* label, int steps, bool modal )
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{
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TQProgressDialog *d = new TQProgressDialog(label, "Cancel", steps, this,
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"progress", modal);
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if ( options->isItemChecked( md_id ) )
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d->setMinimumDuration(0);
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if ( !default_label )
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d->setLabel( new AnimatedThingy(d,label) );
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return d;
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}
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void enableDrawingItems(bool yes)
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{
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for (int i=first_draw_item; i<=last_draw_item; i++) {
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menubar->setItemEnabled(i, yes);
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}
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}
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void draw(int n)
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{
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if ( timer_driven ) {
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if ( pb ) {
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qWarning("This cannot happen!");
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return;
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}
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rects = n;
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pb = newProgressDialog("Drawing rectangles.\n"
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"Using timer event.", n, FALSE);
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pb->setCaption("Please Wait");
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connect(pb, SIGNAL(cancelled()), this, SLOT(stopDrawing()));
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enableDrawingItems(FALSE);
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startTimer(0);
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got_stop = FALSE;
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} else {
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TQProgressDialog* lpb = newProgressDialog(
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"Drawing rectangles.\nUsing loop.", n, TRUE);
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lpb->setCaption("Please Wait");
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TQPainter p(this);
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for (int i=0; i<n; i++) {
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lpb->setProgress(i);
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if ( lpb->wasCancelled() )
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break;
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TQColor c(rand()%255, rand()%255, rand()%255);
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int x = rand()%(width()-8);
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int y = rand()%(height()-8);
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int w = rand()%(width()-x);
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int h = rand()%(height()-y);
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p.fillRect(x,y,w,h,c);
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}
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p.fillRect(0, 0, width(), height(), backgroundColor());
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delete lpb;
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}
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}
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TQMenuBar* menubar;
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TQProgressDialog* pb;
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TQPopupMenu* options;
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int td_id, ld_id;
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int dl_id, cl_id;
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int md_id;
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int rects;
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bool timer_driven;
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bool default_label;
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bool got_stop;
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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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int wincount = argc > 1 ? atoi(argv[1]) : 1;
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for ( int i=0; i<wincount; i++ ) {
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CPUWaster* cpuw = new CPUWaster;
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if ( i == 0 ) a.setMainWidget(cpuw);
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cpuw->show();
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}
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return a.exec();
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}
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#include "progress.moc"
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