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|
use warnings;
use strict;
use File::Temp;
use Image::Magick;
use Test::More tests => 4;
use MIME::Base64;
BEGIN {
use Glib qw/TRUE FALSE/;
use Gtk3 -init;
use_ok('Gtk3::ImageView');
Glib::Object::Introspection->setup(
basename => 'GdkX11',
version => '3.0',
package => 'Gtk3::GdkX11',
);
}
my $window = Gtk3::Window->new('toplevel');
$window->set_size_request( 300, 200 );
my $css_provider_alpha = Gtk3::CssProvider->new;
Gtk3::StyleContext::add_provider_for_screen( $window->get_screen,
$css_provider_alpha, 0 );
$css_provider_alpha->load_from_data( "
.imageview.transparent {
background-color: #ff0000;
background-image: none;
}
.imageview {
background-image: url('t/transp-blue.svg');
}
" );
my $view = Gtk3::ImageView->new;
$view->set_pixbuf( Gtk3::Gdk::Pixbuf->new_from_file('t/transp-green.svg'),
TRUE );
$window->add($view);
$window->show_all;
my $xid = $window->get_window->get_xid;
my $image = Image::Magick->new( magick => 'png' );
Glib::Timeout->add(
1000,
sub {
$image->Read("x:$xid");
Gtk3::main_quit;
return FALSE;
}
);
Gtk3::main;
diag('PNG of the shown window:');
diag( encode_base64( $image->ImageToBlob ) );
my $x = $image->Get('width') / 2;
my $y = $image->Get('height') / 2;
my @middle = $image->GetPixel( x => $x, y => $y );
is_deeply( \@middle, [ 0, 1, 0 ], 'middle pixel should be green' );
my $found;
$found = 0;
while ( $x > 0 ) {
my @pixel = $image->GetPixel( x => $x, y => $y );
if ( join( ',', @pixel ) eq '1,0,0' ) {
$found = 1;
last;
}
$x--;
}
is( $found, 1, 'there is red background' );
$found = 0;
while ( $x > 0 ) {
my @pixel = $image->GetPixel( x => $x, y => $y );
# the blue chessboard can become blurred with hidpi :(
my @pixel_below =
$image->GetPixel( x => $x, y => $y + $view->get('scale-factor') );
if ( join( ',', @pixel ) eq '0,0,1'
or join( ',', @pixel_below ) eq '0,0,1' )
{
$found = 1;
last;
}
$x--;
}
is( $found, 1, 'there is blue outside' );
|
