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package dc::UI::Canvas; |
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use strict; |
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use utf8; |
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use List::Util qw(max min); |
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1.3 |
use dc::OpenGL; |
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1.1 |
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1.3 |
our @ISA = dc::UI::Fixed::; |
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1.1 |
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sub new { |
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my ($class, %arg) = @_; |
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my $items = delete $arg{items}; |
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my $self = $class->SUPER::new ( |
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1.2 |
items => [], |
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1.1 |
@_, |
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); |
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$self->add (@$items) |
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if $items && @$items; |
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$self |
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} |
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sub add_items { |
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my ($self, @items) = @_; |
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push @{$self->{items}}, @items; |
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my @coords = |
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map @{ $_->{coord} }, |
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grep $_->{coord_mode} ne "rel", |
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@{ $self->{items} }; |
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$self->{item_max_w} = max map $_->[0], @coords; |
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$self->{item_max_h} = max map $_->[1], @coords; |
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$self->realloc; |
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map $_+0, @items |
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} |
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sub size_request { |
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my ($self) = @_; |
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my ($w, $h) = $self->SUPER::size_request; |
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1.2 |
( |
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(max $w, $self->{item_max_w}), |
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(max $h, $self->{item_max_h}), |
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) |
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1.1 |
} |
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my %GLTYPE = ( |
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lines => GL_LINES, |
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line_strip => GL_LINE_STRIP, |
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line_loop => GL_LINE_LOOP, |
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quads => GL_QUADS, |
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quad_strip => GL_QUAD_STRIP, |
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triangles => GL_TRIANGLES, |
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triangle_strip => GL_TRIANGLE_STRIP, |
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triangle_fan => GL_TRIANGLE_FAN, |
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polygon => GL_POLYGON, |
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); |
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sub _draw { |
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my ($self) = @_; |
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$self->SUPER::_draw; |
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for my $item (@{ $self->{items} }) { |
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glPushMatrix; |
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glScale $self->{w}, $self->{h} if $item->{coord_mode} eq "rel"; |
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glColor @{ $item->{color} }; |
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glLineWidth $item->{width} || 1.; |
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glPointSize $item->{size} || 1.; |
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if (my $gltype = $GLTYPE{$item->{type}}) { |
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glBegin $gltype; |
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glVertex @$_ for @{$item->{coord}}; |
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glEnd; |
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} |
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glPopMatrix; |
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} |
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} |
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