# PIKA - Photo and Image Kooker Application
# Copyright (C) 1995 Spencer Kimball and Peter Mattis

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# "Perlized" from C source by Manish Singh <yosh@gimp.org>


sub gradients_popup {
    $blurb = 'Invokes the Pika gradients selection dialog.';
    $help  = 'Opens a dialog letting a user choose a gradient.';

    &andy_pdb_misc('1998');

    @inargs = (
      { name => 'gradient_callback', type => 'string', non_empty => 1,
        desc => 'The callback PDB proc to call when user chooses a gradient' },
      { name => 'popup_title', type => 'string',
        desc => 'Title of the gradient selection dialog' },
      { name => 'initial_gradient', type => 'gradient', null_ok => 1,
        desc => 'The initial gradient choice' },
      { name => 'parent_window', type => 'bytes', null_ok => 1,
        desc => 'An optional parent window handle for the popup to be set transient to' }
      );

    %invoke = (
	code => <<'CODE'
{
  PikaContainer *container = pika_data_factory_get_container (pika->gradient_factory);

  /* Formerly, this procedure had another parameter:
   * the sample size of the gradient's data passed in the changed callback.
   * Now the sample size is determined by core, and in the future,
   * the callback won't return a sample of the data at all.
   */

  if (pika->no_interface ||
      ! pika_pdb_lookup_procedure (pika->pdb, gradient_callback) ||
      ! pika_pdb_dialog_new (pika, context, progress,
                             pika_container_get_children_type (container),
                             parent_window, popup_title, gradient_callback,
                             PIKA_OBJECT (initial_gradient), NULL))
    success = FALSE;
}
CODE
    );
}

sub gradients_close_popup {
    $blurb = 'Close the gradient selection dialog.';
    $help  = 'Closes an open gradient selection dialog.';

    &andy_pdb_misc('1998');

    @inargs = (
      { name => 'gradient_callback', type => 'string', non_empty => 1,
        desc => 'The name of the callback registered for this pop-up' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaContainer *container = pika_data_factory_get_container (pika->gradient_factory);

  if (pika->no_interface ||
      ! pika_pdb_lookup_procedure (pika->pdb, gradient_callback) ||
      ! pika_pdb_dialog_close (pika,
                               pika_container_get_children_type (container),
                               gradient_callback))
    success = FALSE;
}
CODE
    );
}

sub gradients_set_popup {
    $blurb = 'Sets the current gradient in a gradient selection dialog.';
    $help  = $blurb;

    &andy_pdb_misc('1998');

    @inargs = (
      { name => 'gradient_callback', type => 'string', non_empty => 1,
        desc => 'The name of the callback registered for this pop-up' },
      { name => 'gradient', type => 'gradient',
        desc => 'The gradient to set as selected' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaContainer *container = pika_data_factory_get_container (pika->gradient_factory);

  if (pika->no_interface ||
      ! pika_pdb_lookup_procedure (pika->pdb, gradient_callback) ||
      ! pika_pdb_dialog_set (pika,
                             pika_container_get_children_type (container),
                             gradient_callback, PIKA_OBJECT (gradient), NULL))
    success = FALSE;
}
CODE
    );
}


@headers = qw("core/pika.h"
              "core/pikacontainer.h"
              "core/pikadatafactory.h"
              "core/pikagradient.h");

@procs = qw(gradients_popup
            gradients_close_popup
            gradients_set_popup);

%exports = (app => [@procs], lib => [@procs]);

$desc = 'Gradient UI';
$doc_title = 'pikagradientselect';
$doc_short_desc = 'Methods of a gradient chooser dialog';
$doc_long_desc = 'A dialog letting a user choose a gradient.  Read more at pikafontselect.';

1;