package Crossfire::Client::Widget;

use strict;
use SDL::OpenGL;
use SDL::OpenGL::Constants;

our $FOCUS;  # the widget with current focus
our %ACTIVE_WIDGETS;

# class methods for events
sub feed_sdl_key_down_event    { $FOCUS->key_down ($_[0])    if $FOCUS }
sub feed_sdl_key_up_event      { $FOCUS->key_up ($_[0])      if $FOCUS }
sub feed_sdl_button_down_event { $FOCUS->button_down ($_[0]) if $FOCUS }
sub feed_sdl_button_up_event   { $FOCUS->button_up ($_[0])   if $FOCUS }

sub new {
   my $class = shift;

   bless { @_ }, $class
}

sub activate {
   $ACTIVE_WIDGETS{$_[0]} = $_[0];
}

sub deactivate {
   delete $ACTIVE_WIDGETS{$_[0]};
}

sub focus_in {
   my ($widget) = @_;
   $FOCUS = $widget;
}

sub focus_out {
   my ($widget) = @_;
}

sub key_down {
   my ($widget, $sdlev) = @_;
}

sub key_up {
   my ($widget, $sdlev) = @_;
}

sub button_down {
   my ($widget, $sdlev) = @_;
}

sub button_up {
   my ($widget, $sdlev) = @_;
}

sub x { $_[0]->{x} = $_[1] if $_[1]; $_[0]->{x} }
sub y { $_[0]->{y} = $_[1] if $_[1]; $_[0]->{y} }

sub draw {
   my ($self) = @_;

   glPushMatrix;
   glTranslate ($self->{x} || 0, $self->{y} || 0, 0);
   $self->_draw;
   glPopMatrix;
}

sub _draw {
   my ($widget) = @_;
}

sub bbox {
   my ($widget) = @_;
}

package Crossfire::Client::Widget::Label;

use SDL::OpenGL;

sub new {
   my ($class, $ttf, $text) = @_;

   my $self = $class->SUPER::new;

   $self->{texture} = new_from_ttf Crossfire::Client::Texture $ttf, $text;

   $self
}

sub _draw {
   my ($self) = @_;

   my $tex = $self->{texture};

   glEnable GL_TEXTURE_2D;
   glBindTexture GL_TEXTURE_2D, $tex->{name};

   glBegin GL_QUADS;
   glTexCoord 0, 0; glVertex 0            , 0;
   glTexCoord 0, 1; glVertex 0            , $tex->{height};
   glTexCoord 1, 1; glVertex $tex->{width}, $tex->{height};
   glTexCoord 1, 0; glVertex $tex->{width}, 0;
   glEnd;

   glDisable GL_TEXTURE_2D;
}

package Crossfire::Client::Widget::TextView;

use strict;

our @ISA = qw/Crossfire::Client::Widget/;

use SDL::OpenGL;
use SDL::OpenGL::Constants;

sub add_line {
   my ($self, $line) = @_;
   push @{$self->{lines}}, $line;
}

sub _draw {
   my ($self) = @_;

}

package Crossfire::Client::Widget::MapWidget;

use strict;

our @ISA = qw/Crossfire::Client::Widget/;

use SDL::OpenGL;
use SDL::OpenGL::Constants;

sub key_down {
   print "MAPKEYDOWN\n";
}

sub key_up {
}

sub _draw {
   glEnable GL_TEXTURE_2D;
   glEnable GL_BLEND;

   my $map = $::CONN->{map};

   for my $x (0 .. $::CONN->{mapw} - 1) {
      for my $y (0 .. $::CONN->{maph} - 1) {

         my $cell = $map->[$x][$y]
            or next;

         my $darkness = $cell->[3] * (1 / 255);
         glColor $darkness, $darkness, $darkness;

         for my $num (grep $_, $cell->[0], $cell->[1], $cell->[2]) {
            my $tex = $::CONN->{face}[$num]{texture} || next;

            glBindTexture GL_TEXTURE_2D, $tex->{name};

            glBegin GL_QUADS;
            glTexCoord 0, 0; glVertex $x * 32     , $y * 32;
            glTexCoord 0, 1; glVertex $x * 32     , $y * 32 + 32;
            glTexCoord 1, 1; glVertex $x * 32 + 32, $y * 32 + 32;
            glTexCoord 1, 0; glVertex $x * 32 + 32, $y * 32;
            glEnd;
         }
      }
   }

   glDisable GL_TEXTURE_2D;
   glDisable GL_BLEND;
}

1;