Autocreate Fakedisplay.pm with cached font.png

1 files changed, 187 insertions, 0 deletions

diff --git a/lib/App/VRR/Fakedisplay.pm.PL b/lib/App/VRR/Fakedisplay.pm.PL
new file mode 100644
index 0000000..ebb436d
--- /dev/null
+++ b/lib/App/VRR/Fakedisplay.pm.PL
@@ -0,0 +1,187 @@
+#!/usr/bin/env perl;
+use strict;
+use warnings;
+use 5.010;
+use utf8;
+
+use GD;
+
+my ($out_file) = @ARGV;
+my $font = GD::Image->new('share/font.png');
+my $black = $font->colorClosest(0, 0, 0);
+
+open(my $out_fh, '>', $out_file) or die("open ${out_file}: $!");
+
+sub write_out {
+	my ($off_x, $off_y, $char) = @_;
+	my $char_w = 0;
+
+	say $out_fh "'${char}' => {";
+	say $out_fh 'matrix => [';
+
+	for my $pos_y ( $off_y .. ($off_y + 10)) {
+		print $out_fh '[ ';
+		for my $pos_x ( $off_x .. ($off_x + 10)) {
+			if ($font->getPixel($pos_x, $pos_y) == $black) {
+
+				if (($pos_x - $off_x) > $char_w) {
+					$char_w = $pos_x - $off_x;
+				}
+
+				print $out_fh '1, ';
+			}
+			else {
+				print $out_fh '0, ';
+			}
+		}
+		say $out_fh ' ],';
+	}
+
+	# spacing (one empty column)
+	$char_w++;
+
+	if ($char eq q{ }) {
+		$char_w = 5;
+	}
+
+	say $out_fh '],';
+	say $out_fh "width => ${char_w},";
+	say $out_fh '},';
+}
+
+sub parse_char_row {
+	my ($off_y, @chars) = @_;
+	my $off_x = 0;
+
+	for my $char (@chars) {
+		write_out($off_x, $off_y, $char);
+		$off_x += 10;
+	}
+
+	return;
+}
+
+
+print $out_fh <<'___CUT___';
+
+package App::VRR::Fakedisplay;
+
+use strict;
+use warnings;
+use 5.010;
+use utf8;
+
+use File::ShareDir qw(dist_file);
+use GD;
+
+our $VERSION = '0.00';
+
+sub new {
+	my ( $class, %opt ) = @_;
+
+	my $self = {
+		width => $opt{width} || 140,
+		height => $opt{height} || 40,
+		scale => 10,
+		offset_x => 0,
+		offset_y => 0,
+	};
+
+	$self->{image} = GD::Image->new($self->{width} * $self->{scale}, $self->{height} * $self->{scale});
+
+	$self->{color}->{bg} = $self->{image}->colorAllocate(0, 0, 0);
+	$self->{color}->{fg} = $self->{image}->colorAllocate(@{$opt{color} // [255, 0, 0]});
+
+	$self->{image}->filledRectangle(0, 0, ($self->{width} * $self->{scale}) -1,
+	($self->{height} * $self->{scale}) - 1, $self->{color}->{bg});
+
+	$self->{font} = {
+
+___CUT___
+
+parse_char_row( 0, 'A' .. 'Z');
+parse_char_row(10, 'a' .. 'z');
+parse_char_row(20, '0' .. '9');
+parse_char_row(30, q{:}, q{-}, q{.}, q{,}, q{/}, q{ });
+parse_char_row(40, qw(ä ö ü));
+
+print $out_fh <<'___CUT___';
+
+	};
+
+	return bless( $self, $class );
+}
+
+sub draw_at {
+	my ($self, $offset_x, $text) = @_;
+
+	my $im = $self->{image};
+	my $font = $self->{font};
+
+	my $c_bg = $self->{color}{bg};
+	my $c_fg = $self->{color}{fg};
+
+	my $font_idx = $self->{font_idx};
+
+	my $scale = $self->{scale};
+
+	my ($off_x, $off_y) = ($offset_x, $self->{offset_y});
+
+	if ($off_y >= $self->{height} or $off_x >= $self->{width}) {
+		return;
+	}
+
+	for my $char (split(qr{}, $text)) {
+
+		if (not exists $self->{font}->{$char}) {
+			next;
+		}
+
+		my $w = $self->{font}->{$char}->{width};
+
+		for my $y ( 0 .. 10 ) {
+			for my $x ( 0 .. $w ) {
+				if ($self->{font}->{$char}->{matrix}->[$y]->[$x]) {
+					$im->filledEllipse(
+						($off_x + $x) * $scale, ($off_y + $y) * $scale,
+						$scale, $scale,
+						$c_fg
+					);
+				}
+			}
+		}
+		$off_x += $w;
+	}
+
+	return;
+}
+
+sub new_line {
+	my ($self) = @_;
+	$self->{offset_y} += 10;
+
+	return;
+}
+
+sub png {
+	my ($self) = @_;
+
+	return $self->{image}->png;
+}
+
+sub write_image_to {
+	my ($self, $filename) = @_;
+
+	open(my $out_fh, '>', $filename) or die("Cannot open ${filename}: ${!}\n");
+	binmode $out_fh;
+	print $out_fh $self->{image}->png;
+	close($out_fh);
+
+	return;
+}
+
+1;
+
+___CUT___
+
+close($out_fh);