#
# Copyright (c) 1997-2002 The Protein Laboratory, University of Copenhagen
# All rights reserved.
#
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# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
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#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
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# $Id$
#
=pod
=item NAME
Screen and widget grabbing example
=item FEATURES
Provided two standalone tests.
The "grip test" copies a graphic content of a widget onto a monochrome
bitmap, thus testing the widget representation on a monochrome display.
This test is useful together with a L<launch> example, that allows execution
of several Prima examples in one task space.
The "grab test" copies the selected region of a screen.
Tests the correct implementation of apc_application_get_bitmap() function,
especially on paletted displays.
=cut
use strict;
use Prima;
use Prima::ImageViewer;
use Prima::Application;
use Prima::RubberBand;
package MonoDeviceBitmap;
use vars qw(@ISA);
@ISA = qw(Prima::DeviceBitmap);
sub color
{
return $_[0]-> SUPER::color unless $#_;
my ( $self, $color) = @_;
$self-> SUPER::color( $self-> get_nearest_color( $color));
}
sub backColor
{
return $_[0]-> SUPER::backColor unless $#_;
my ( $self, $color) = @_;
$self-> SUPER::backColor( $self-> get_nearest_color( $color));
}
package Generic;
my $imgType = im::bpp1;
sub canvas
{
my $self = $_[0];
my $i = MonoDeviceBitmap-> create(
type => $imgType,
width => $self-> width,
height => $self-> height,
monochrome => 1,
preserveType => 1,
);
$i-> begin_paint;
$i-> set(
color => $self-> color,
backColor => $self-> backColor,
font => $self-> font,
);
return $i;
}
sub paint
{
my ( $self, $canvas) = @_;
$self-> notify(q(Paint), $canvas);
$canvas-> clipRect( 0, 0, $self-> size);
$canvas-> translate(0, 0);
$canvas-> palette([]);
my @c = $self-> widgets;
for ( @c) {
next unless $_-> visible;
my @org = $_-> origin;
my $i = canvas( $_);
if ( $_-> transparent) {
$i-> put_image( -$org[0], -$org[1], $canvas);
}
paint( $_, $i);
$i-> end_paint;
$canvas-> put_image( @org, $i);
}
}
sub xordraw
{
my ($self, $new_rect) = @_;
my $o = $::application;
$o-> begin_paint;
$o-> rubberband( $new_rect ?
( rect => [$self-> {capx},$self-> {capy}, $self-> {dx},$self-> {dy}]) :
( destroy => 1 )
);
$o-> end_paint;
}
my $w = Prima::MainWindow-> create(
size => [ 200, 200],
menuItems => [
[ "~Grip" => sub {
my $self = $_[0];
$self-> capture( 1);
$self-> pointer( cr::Move);
$self-> { cap} = 1;
}],
[ "G~rab" => sub {
my $self = $_[0];
$self-> capture( 1);
$self-> { cap} = 2;
}],
],
onMouseDown => sub {
my ( $self, $btn, $mod, $x, $y) = @_;
return unless defined $self-> {cap};
return unless $self-> {cap} == 2;
return unless $btn == mb::Left;
$self-> {cap} = 3;
($self-> {capx},$self-> {capy}) = $self-> client_to_screen( $x, $y);
($self-> {dx},$self-> {dy}) = ($self-> {capx},$self-> {capy});
xordraw( $self, 1);
},
onMouseMove => sub {
my ( $self, $mod, $x, $y) = @_;
return unless defined $self-> {cap};
return unless $self-> {cap} == 3;
my @od = ($self-> {dx},$self-> {dy});
($self-> {dx},$self-> {dy}) = $self-> client_to_screen( $x, $y);
xordraw( $self, 1);
},
onMouseUp => sub {
my ( $self, $btn, $mod, $x, $y) = @_;
return unless defined $self-> { cap};
my $cap = $self-> { cap};
$self-> { cap} = undef;
$self-> capture(0);
if ( $cap == 1) {
$self-> pointer( cr::Default);
my $v = $::application-> get_widget_from_point( $self-> client_to_screen( $x, $y));
return unless $v;
my $i = canvas( $v);
paint( $v, $i);
$i-> end_paint;
$self-> IV-> image( $i-> image);
} elsif ( $cap == 3) {
($self-> {dx},$self-> {dy}) = $self-> client_to_screen( $x, $y);
xordraw( $self);
my ( $xl, $yl) = (abs($self-> {dx} - $self-> {capx}), abs($self-> {dy} - $self-> {capy}));
$x = $self-> {capx} > $self-> {dx} ? $self-> {dx} : $self-> {capx};
$y = $self-> {capy} > $self-> {dy} ? $self-> {dy} : $self-> {capy};
my $i = $::application-> get_image( $x, $y, $xl, $yl);
$self-> IV-> image( $i);
}
},
);
$w-> insert( ImageViewer =>
pack => { expand => 1, fill => 'both' },
name => 'IV',
valignment => ta::Center,
alignment => ta::Center,
quality => 1,
);
run Prima;