gimp/plug-ins/file-webp/file-webp-dialog.c

/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * file-webp - WebP file format plug-in for the GIMP
 * Copyright (C) 2015  Nathan Osman
 * Copyright (C) 2016  Ben Touchette
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>

#include "file-webp.h"
#include "file-webp-dialog.h"

#include "libgimp/stdplugins-intl.h"


static GtkListStore * save_dialog_presets        (void);
static void           save_dialog_preset_changed (GtkWidget  *widget,
                                                  gchar     **data);
static void           save_dialog_toggle_scale   (GtkWidget  *widget,
                                                  gpointer   data);


static struct
{
  const gchar *id;
  const gchar *label;
} presets[] =
{
  { "default", "Default" },
  { "picture", "Picture" },
  { "photo",   "Photo"   },
  { "drawing", "Drawing" },
  { "icon",    "Icon"    },
  { "text",    "Text"    },
  { 0 }
};

static GtkListStore *
save_dialog_presets (void)
{
  GtkListStore *list_store;
  gint          i;

  list_store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);

  for (i = 0; presets[i].id; ++i)
    gtk_list_store_insert_with_values (list_store,
                                       NULL,
                                       -1,
                                       0, presets[i].id,
                                       1, presets[i].label,
                                       -1);

  return list_store;
}

static void
save_dialog_preset_changed (GtkWidget  *widget,
                            gchar     **data)
{
  g_free (*data);
  *data = gimp_string_combo_box_get_active (GIMP_STRING_COMBO_BOX (widget));
}

static void
save_dialog_toggle_scale (GtkWidget *widget,
                          gpointer   data)
{
  gimp_scale_entry_set_sensitive (GTK_OBJECT (data),
                                  ! gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)));
}

gboolean
save_dialog (WebPSaveParams *params,
             gint32          image_ID,
             gint32          n_layers)
{
  GtkWidget     *dialog;
  GtkWidget     *vbox;
  GtkWidget     *label;
  GtkWidget     *table;
  GtkWidget     *expander;
  GtkWidget     *frame;
  GtkWidget     *vbox2;
  GtkWidget     *save_exif;
  GtkWidget     *save_xmp;
  GtkWidget     *preset_label;
  GtkListStore  *preset_list;
  GtkWidget     *preset_combo;
  GtkWidget     *lossless_checkbox;
  GtkWidget     *animation_checkbox;
  GtkObject     *quality_scale;
  GtkObject     *alpha_quality_scale;
  gboolean       animation_supported = FALSE;
  gboolean       run;
  gchar         *text;

  animation_supported = n_layers > 1;

  /* Create the dialog */
  dialog = gimp_export_dialog_new (_("WebP"), PLUG_IN_BINARY, SAVE_PROC);

  /* Create the vbox */
  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
  gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
  gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
                      vbox, FALSE, FALSE, 0);
  gtk_widget_show (vbox);

  /* Create the descriptive label at the top */
  text = g_strdup_printf ("<b>%s</b>", _("WebP Options"));
  label = gtk_label_new (NULL);
  gtk_label_set_markup (GTK_LABEL(label), text);
  g_free (text);
  gtk_label_set_xalign (GTK_LABEL (label), 0.0);
  gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);

  /* Create the table */
  table = gtk_table_new (4, 5, FALSE);
  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
  gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
  gtk_widget_show (table);

  /* Create the slider for image quality */
  quality_scale = gimp_scale_entry_new (GTK_TABLE (table),
                                        0, 0,
                                        _("Image quality:"),
                                        125,
                                        0,
                                        params->quality,
                                        0.0, 100.0,
                                        1.0, 10.0,
                                        0, TRUE,
                                        0.0, 0.0,
                                        _("Image quality"),
                                        NULL);
  gimp_scale_entry_set_sensitive (quality_scale, ! params->lossless);

  g_signal_connect (quality_scale, "value-changed",
                    G_CALLBACK (gimp_float_adjustment_update),
                    &params->quality);

  /* Create the slider for alpha channel quality */
  alpha_quality_scale = gimp_scale_entry_new (GTK_TABLE (table),
                                              0, 1,
                                              _("Alpha quality:"),
                                              125,
                                              0,
                                              params->alpha_quality,
                                              0.0, 100.0,
                                              1.0, 10.0,
                                              0, TRUE,
                                              0.0, 0.0,
                                              _("Alpha channel quality"),
                                              NULL);
  gimp_scale_entry_set_sensitive (alpha_quality_scale, ! params->lossless);

  g_signal_connect (alpha_quality_scale, "value-changed",
                    G_CALLBACK (gimp_float_adjustment_update),
                    &params->alpha_quality);

  /* Create the label for the selecting a preset */
  preset_label = gtk_label_new (_("Preset:"));
  gtk_label_set_xalign (GTK_LABEL (preset_label), 0.0);
  gtk_table_attach (GTK_TABLE (table), preset_label,
                    0, 1, 2, 3,
                    GTK_FILL, GTK_FILL, 0, 0);
  gtk_widget_show (preset_label);

  /* Create the combobox containing the presets */
  preset_list = save_dialog_presets ();
  preset_combo = gimp_string_combo_box_new (GTK_TREE_MODEL (preset_list), 0, 1);
  g_object_unref (preset_list);

  gimp_string_combo_box_set_active (GIMP_STRING_COMBO_BOX (preset_combo),
                                    params->preset);
  gtk_table_attach (GTK_TABLE (table), preset_combo,
                    1, 3, 2, 3,
                    GTK_FILL, GTK_FILL, 0, 0);
  gtk_widget_show (preset_combo);

  g_signal_connect (preset_combo, "changed",
                    G_CALLBACK (save_dialog_preset_changed),
                    &params->preset);

  /* Create the lossless checkbox */
  lossless_checkbox = gtk_check_button_new_with_label (_("Lossless"));
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (lossless_checkbox),
                                params->lossless);
  gtk_table_attach (GTK_TABLE (table), lossless_checkbox,
                    0, 4, 3, 4,
                    GTK_FILL, GTK_FILL, 0, 0);
  gtk_widget_show (lossless_checkbox);

  g_signal_connect (lossless_checkbox, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &params->lossless);

  /* Enable and disable the sliders when the lossless option is selected */
  g_signal_connect (lossless_checkbox, "toggled",
                    G_CALLBACK (save_dialog_toggle_scale),
                    quality_scale);
  g_signal_connect (lossless_checkbox, "toggled",
                    G_CALLBACK (save_dialog_toggle_scale),
                    alpha_quality_scale);

  if (animation_supported)
    {
      GtkWidget     *animation_box;
      GtkWidget     *animation_box2;
      GtkWidget     *loop_anim_checkbox;
      GtkWidget     *animation_expander;
      GtkWidget     *animation_frame;
      GtkAdjustment *adj;
      GtkWidget     *delay;
      GtkWidget     *delay_label;
      GtkWidget     *delay_label2;
      GtkWidget     *delay_hbox;
      GtkWidget     *delay_checkbox;

      /* Create the top-level animation checkbox */
      animation_checkbox = gtk_check_button_new_with_label (_("As animation"));
      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (animation_checkbox),
                                    params->animation);
      gtk_table_attach (GTK_TABLE (table), animation_checkbox,
                        0, 4, 4, 5,
                        GTK_FILL, GTK_FILL, 0, 0);
      gtk_widget_set_sensitive (animation_checkbox, TRUE);
      g_signal_connect (animation_checkbox, "toggled",
                        G_CALLBACK (gimp_toggle_button_update),
                        &params->animation);
      gtk_widget_show (animation_checkbox);

      text = g_strdup_printf ("<b>%s</b>", _("Animated WebP Options"));
      animation_expander = gtk_expander_new_with_mnemonic (text);
      gtk_expander_set_use_markup (GTK_EXPANDER (animation_expander), TRUE);
      g_free (text);
      gtk_box_pack_start (GTK_BOX (vbox), animation_expander, TRUE, TRUE, 0);
      gtk_widget_show (animation_expander);

      /* animation options box */
      animation_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
      gtk_container_set_border_width (GTK_CONTAINER (animation_box), 6);
      gtk_container_add (GTK_CONTAINER (animation_expander), animation_box);
      gtk_widget_show (animation_box);

      animation_frame = gimp_frame_new ("<expander>");
      gtk_box_pack_start (GTK_BOX (animation_box), animation_frame, FALSE, FALSE, 0);
      gtk_widget_show (animation_frame);

      animation_box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
      gtk_container_add (GTK_CONTAINER (animation_frame), animation_box2);
      gtk_widget_show (animation_box2);

      /* loop animation checkbox */
      loop_anim_checkbox = gtk_check_button_new_with_label (_("Loop forever"));
      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (loop_anim_checkbox),
                                    params->loop);
      gtk_box_pack_start (GTK_BOX (animation_box2), loop_anim_checkbox, FALSE, FALSE, 0);
      gtk_widget_show (loop_anim_checkbox);

      g_signal_connect (loop_anim_checkbox, "toggled",
                        G_CALLBACK (gimp_toggle_button_update),
                        &params->loop);

      /* create a hbox for delay */
      delay_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
      gtk_box_pack_start (GTK_BOX (animation_box2), delay_hbox, FALSE, FALSE, 0);
      gtk_widget_show (delay_hbox);

      /* label for 'delay' adjustment */
      delay_label = gtk_label_new (_("Delay between frames where unspecified:"));
      gtk_label_set_xalign (GTK_LABEL (delay_label), 0.0);
      gtk_box_pack_start (GTK_BOX (delay_hbox), delay_label, FALSE, FALSE, 0);
      gtk_widget_show (delay_label);

      /* default delay */
      adj = (GtkAdjustment *) gtk_adjustment_new (params->delay, 1, 10000, 1, 10, 0);
      delay = gtk_spin_button_new (adj, 1, 0);
      gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (delay), TRUE);
      gtk_box_pack_start (GTK_BOX (delay_hbox), delay, FALSE, FALSE, 0);
      gtk_widget_show (delay);

      g_signal_connect (adj, "value-changed",
                        G_CALLBACK (gimp_int_adjustment_update),
                        &params->delay);

      /* label for 'ms' adjustment */
      delay_label2 = gtk_label_new (_("milliseconds"));
      gtk_box_pack_start (GTK_BOX (delay_hbox), delay_label2, FALSE, FALSE, 0);
      gtk_widget_show (delay_label2);

      /* Create the force-delay checkbox */
      delay_checkbox = gtk_check_button_new_with_label (_("Use delay entered above for all frames"));
      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (delay_checkbox),
                                    params->force_delay);
      gtk_box_pack_start (GTK_BOX (animation_box2), delay_checkbox, FALSE, FALSE, 0);
      gtk_widget_show (delay_checkbox);

      g_signal_connect (delay_checkbox, "toggled",
                        G_CALLBACK (gimp_toggle_button_update),
                        &params->force_delay);



      /* bind the animation checkbox to the parameters */
      g_object_bind_property (animation_checkbox, "active",
                              animation_expander,  "sensitive",
                              G_BINDING_SYNC_CREATE);
  }

  /* Advanced options */
  text = g_strdup_printf ("<b>%s</b>", _("_Advanced Options"));
  expander = gtk_expander_new_with_mnemonic (text);
  gtk_expander_set_use_markup (GTK_EXPANDER (expander), TRUE);
  g_free (text);

  gtk_box_pack_start (GTK_BOX (vbox), expander, TRUE, TRUE, 0);
  gtk_widget_show (expander);

  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
  gtk_container_add (GTK_CONTAINER (expander), vbox);
  gtk_widget_show (vbox);

  frame = gimp_frame_new ("<expander>");
  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
  gtk_widget_show (frame);

  vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
  gtk_container_add (GTK_CONTAINER (frame), vbox2);
  gtk_widget_show (vbox2);

  /* Save EXIF data */
  save_exif = gtk_check_button_new_with_mnemonic (_("Save _Exif data"));
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (save_exif), params->exif);
  gtk_box_pack_start (GTK_BOX (vbox2), save_exif, FALSE, FALSE, 0);
  gtk_widget_show (save_exif);

  g_signal_connect (save_exif, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &params->exif);

  /* XMP metadata */
  save_xmp = gtk_check_button_new_with_mnemonic (_("Save _XMP data"));
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (save_xmp), params->xmp);
  gtk_box_pack_start (GTK_BOX (vbox2), save_xmp, FALSE, FALSE, 0);
  gtk_widget_show (save_xmp);

  g_signal_connect (save_xmp, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &params->xmp);


  gtk_widget_show (dialog);

  run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);

  gtk_widget_destroy (dialog);

  return run;
}