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CppTrial-pg152.pl
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CppTrial-pg152.pl
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#!/usr/bin/perl
# CppTrial-pg152.pl
# Cross-Platform GUI Programming with wxWidgets - Smart, Hock, & Csomor
# C++ Example from pg 152 - Centering Text - Extends pg 151, 150, & 135 examples
# C++ Example from pg 151 - Drawing Text Rotated - Extends pg 150, & 135 examples
# C++ Example from pg 150 - Drawing Text - Extends pg 135 example
# C++ Example from pg 135 - Drawing on Windows with wxPaintDC
# Ported to wxPerl by James M. Lynes Jr. - Last Modified 9/24/2012
use 5.010;
use strict;
use warnings;
use Wx qw(:everything);
use Wx::Event qw(EVT_PAINT);
# create the WxApplication
my $app = Wx::SimpleApp->new;
my $frame = Wx::Frame->new(undef, -1,
'CppTrial-pg152.pl',
wxDefaultPosition, wxDefaultSize);
EVT_PAINT($frame,\&OnPaint);
$frame->Show;
$app->MainLoop;
# Example specific code
sub OnPaint {
my ( $self, $event) = @_;
my $dc = Wx::PaintDC->new($self);
my $pen = Wx::Pen->new(wxBLACK,1,wxSOLID);
$dc->SetPen($pen);
my $brush=Wx::Brush->new(wxRED,wxSOLID);
$dc->SetBrush($brush);
my $sz=$self->GetClientSize();
my $szx=$sz->x;
my $szy=$sz->y;
my $w=100;
my $h=50;
my $x=($szx - $w)/2;
my $y=($szy - $h)/2;
$dc->DrawRectangle($x,$y,$w,$h); # Centered on frame
my $pt1=Wx::Point->new(160,275); # Fixed position
CppDrawText($dc, "Test Text", $pt1);
my $pt2=Wx::Point->new(200,375); # Fixed position
CppDrawRotatedText($dc, "Test Text", $pt2);
my $pt3=Wx::Point->new(0,50); # Centered on frame
CppDrawCenteredText("Centered Text", $dc, $pt3, $self);
}
sub CppDrawText {
my ( $dc, $text, $pt) = @_;
my $font = Wx::Font->new(12, wxFONTFAMILY_ROMAN, wxNORMAL, wxBOLD);
$dc->SetFont($font);
$dc->SetBackgroundMode(wxTRANSPARENT);
$dc->SetTextForeground(wxBLACK);
$dc->SetTextBackground(wxWHITE);
$dc->DrawText($text,$pt->x, $pt->y);
return;
}
sub CppDrawRotatedText {
my ( $dc, $text, $pt) = @_;
my $font = Wx::Font->new(12, wxFONTFAMILY_ROMAN, wxNORMAL, wxNORMAL);
$dc->SetFont($font);
$dc->SetBackgroundMode(wxTRANSPARENT);
$dc->SetTextForeground(wxGREEN);
$dc->SetTextBackground(wxWHITE);
for (my $angle=0; $angle<360; $angle +=45) {
$dc->DrawRotatedText($text,$pt->x, $pt->y, $angle);
}
return;
}
sub CppDrawCenteredText {
my ( $text, $dc, $pt, $self) = @_;
my $font = Wx::Font->new(12, wxFONTFAMILY_ROMAN, wxNORMAL, wxBOLD);
$dc->SetFont($font);
$dc->SetBackgroundMode(wxTRANSPARENT);
$dc->SetTextForeground(wxBLUE);
$dc->SetTextBackground(wxWHITE);
my $sz=$self->GetClientSize();
my @te=$dc->GetTextExtent($text);
my $x=($sz->x - $te[0])/2;
my $y=$pt->y;
$dc->DrawText($text, $x, $y);
return;
}