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Diffstat (limited to 'PerlTQt/examples/drawlines/drawlines.pl')
-rw-r--r-- | PerlTQt/examples/drawlines/drawlines.pl | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/PerlTQt/examples/drawlines/drawlines.pl b/PerlTQt/examples/drawlines/drawlines.pl new file mode 100644 index 0000000..1d7575f --- /dev/null +++ b/PerlTQt/examples/drawlines/drawlines.pl @@ -0,0 +1,74 @@ +#!/usr/bin/perl -w +use strict; +package ConnectWidget; +use TQt; +use TQt::isa qw(TQt::Widget); +use TQt::attributes qw( + points + colors + count + down +); +use constant MAXPOINTS => 2000; +use constant MAXCOLORS => 40; + +# +# Constructs a ConnectWidget. +# + +sub NEW { + shift->SUPER::NEW(@_[0,1], &WStaticContents); + + setBackgroundColor(&white); + count = 0; + down = 0; + points = []; + my @colors; + for(1 .. MAXCOLORS) { + push @colors, TQt::Color(rand(255), rand(255), rand(255)); + } + colors = \@colors; +} + +sub paintEvent { + my $paint = TQt::Painter(this); + for(my $i = 0; $i < count-1; $i++) { + for(my $j = $i+1; $j < count; $j++) { + $paint->setPen(colors->[rand(MAXCOLORS)]); + $paint->drawLine(points->[$i], points->[$j]); + } + } +} + +sub mousePressEvent { + down = 1; + count = 0; + points = []; + erase(); +} + +sub mouseReleaseEvent { + down = 0; + update(); +} + +sub mouseMoveEvent { + my $e = shift; + if(down && count < MAXPOINTS) { + my $paint = TQt::Painter(this); + push @{this->points}, TQt::Point($e->pos); + count++; + $paint->drawPoint($e->pos); + } +} + +package main; +use TQt; +use ConnectWidget; + +my $a = TQt::Application(\@ARGV); +my $connect = ConnectWidget; +$connect->setCaption("PerlTQt Example - Draw lines"); +$a->setMainWidget($connect); +$connect->show; +exit $a->exec; |