Adding upstream version 2.10.36.upstream/2.10.36

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 967 insertions, 0 deletions

diff --git a/app/widgets/gimppaletteeditor.c b/app/widgets/gimppaletteeditor.c
new file mode 100644
index 0000000..b5f6285
--- /dev/null
+++ b/app/widgets/gimppaletteeditor.c
@@ -0,0 +1,967 @@
+/* GIMP - The GNU Image Manipulation Program
+ * 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/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimp.h"
+#include "core/gimpcontainer.h"
+#include "core/gimpcontext.h"
+#include "core/gimpdatafactory.h"
+#include "core/gimppalette.h"
+
+#include "gimpcolordialog.h"
+#include "gimpdnd.h"
+#include "gimpdocked.h"
+#include "gimpdialogfactory.h"
+#include "gimphelp-ids.h"
+#include "gimppaletteeditor.h"
+#include "gimppaletteview.h"
+#include "gimpsessioninfo-aux.h"
+#include "gimpuimanager.h"
+#include "gimpviewrendererpalette.h"
+#include "gimpwidgets-utils.h"
+
+#include "gimp-intl.h"
+
+
+#define ENTRY_WIDTH  12
+#define ENTRY_HEIGHT 10
+#define SPACING       1
+#define COLUMNS      16
+#define ROWS         11
+
+#define PREVIEW_WIDTH  ((ENTRY_WIDTH  + SPACING) * COLUMNS + 1)
+#define PREVIEW_HEIGHT ((ENTRY_HEIGHT + SPACING) * ROWS    + 1)
+
+
+/*  local function prototypes  */
+
+static void   gimp_palette_editor_docked_iface_init (GimpDockedInterface *face);
+
+static void   gimp_palette_editor_constructed      (GObject           *object);
+static void   gimp_palette_editor_dispose          (GObject           *object);
+
+static void   gimp_palette_editor_unmap            (GtkWidget         *widget);
+
+static void   gimp_palette_editor_set_data         (GimpDataEditor    *editor,
+                                                    GimpData          *data);
+
+static void   gimp_palette_editor_set_context      (GimpDocked        *docked,
+                                                    GimpContext       *context);
+static void   gimp_palette_editor_set_aux_info     (GimpDocked        *docked,
+                                                    GList             *aux_info);
+static GList *gimp_palette_editor_get_aux_info     (GimpDocked        *docked);
+
+static void   palette_editor_invalidate_preview    (GimpPalette       *palette,
+                                                    GimpPaletteEditor *editor);
+
+static void   palette_editor_viewport_size_allocate(GtkWidget         *widget,
+                                                    GtkAllocation     *allocation,
+                                                    GimpPaletteEditor *editor);
+
+static void   palette_editor_drop_palette          (GtkWidget         *widget,
+                                                    gint               x,
+                                                    gint               y,
+                                                    GimpViewable      *viewable,
+                                                    gpointer           data);
+static void   palette_editor_drop_color            (GtkWidget         *widget,
+                                                    gint               x,
+                                                    gint               y,
+                                                    const GimpRGB     *color,
+                                                    gpointer           data);
+
+static void   palette_editor_entry_clicked         (GimpPaletteView   *view,
+                                                    GimpPaletteEntry  *entry,
+                                                    GdkModifierType    state,
+                                                    GimpPaletteEditor *editor);
+static void   palette_editor_entry_selected        (GimpPaletteView   *view,
+                                                    GimpPaletteEntry  *entry,
+                                                    GimpPaletteEditor *editor);
+static void   palette_editor_entry_activated       (GimpPaletteView   *view,
+                                                    GimpPaletteEntry  *entry,
+                                                    GimpPaletteEditor *editor);
+static void   palette_editor_entry_context         (GimpPaletteView   *view,
+                                                    GimpPaletteEntry  *entry,
+                                                    GimpPaletteEditor *editor);
+static void   palette_editor_color_dropped         (GimpPaletteView   *view,
+                                                    GimpPaletteEntry  *entry,
+                                                    const GimpRGB     *color,
+                                                    GimpPaletteEditor *editor);
+
+static void   palette_editor_color_name_changed    (GtkWidget         *widget,
+                                                    GimpPaletteEditor *editor);
+static void   palette_editor_columns_changed       (GtkAdjustment     *adj,
+                                                    GimpPaletteEditor *editor);
+
+static void   palette_editor_resize                (GimpPaletteEditor *editor,
+                                                    gint               width,
+                                                    gdouble            zoom_factor);
+static void   palette_editor_scroll_top_left       (GimpPaletteEditor *editor);
+static void   palette_editor_edit_color_update     (GimpColorDialog   *dialog,
+                                                    const GimpRGB     *color,
+                                                    GimpColorDialogState state,
+                                                    GimpPaletteEditor *editor);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpPaletteEditor, gimp_palette_editor,
+                         GIMP_TYPE_DATA_EDITOR,
+                         G_IMPLEMENT_INTERFACE (GIMP_TYPE_DOCKED,
+                                                gimp_palette_editor_docked_iface_init))
+
+#define parent_class gimp_palette_editor_parent_class
+
+static GimpDockedInterface *parent_docked_iface = NULL;
+
+
+static void
+gimp_palette_editor_class_init (GimpPaletteEditorClass *klass)
+{
+  GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass      *widget_class = GTK_WIDGET_CLASS (klass);
+  GimpDataEditorClass *editor_class = GIMP_DATA_EDITOR_CLASS (klass);
+
+  object_class->constructed = gimp_palette_editor_constructed;
+  object_class->dispose     = gimp_palette_editor_dispose;
+
+  widget_class->unmap       = gimp_palette_editor_unmap;
+
+  editor_class->set_data    = gimp_palette_editor_set_data;
+  editor_class->title       = _("Palette Editor");
+}
+
+static void
+gimp_palette_editor_docked_iface_init (GimpDockedInterface *iface)
+{
+  parent_docked_iface = g_type_interface_peek_parent (iface);
+
+  if (! parent_docked_iface)
+    parent_docked_iface = g_type_default_interface_peek (GIMP_TYPE_DOCKED);
+
+  iface->set_context  = gimp_palette_editor_set_context;
+  iface->set_aux_info = gimp_palette_editor_set_aux_info;
+  iface->get_aux_info = gimp_palette_editor_get_aux_info;
+}
+
+static void
+gimp_palette_editor_init (GimpPaletteEditor *editor)
+{
+  GimpDataEditor *data_editor = GIMP_DATA_EDITOR (editor);
+  GtkWidget      *viewport;
+  GtkWidget      *hbox;
+  GtkWidget      *icon;
+  GtkWidget      *spinbutton;
+
+  editor->zoom_factor = 1.0;
+  editor->col_width   = 0;
+  editor->last_width  = 0;
+  editor->columns     = COLUMNS;
+
+  data_editor->view = gtk_scrolled_window_new (NULL, NULL);
+  gtk_widget_set_size_request (data_editor->view, -1, PREVIEW_HEIGHT);
+  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (data_editor->view),
+                                  GTK_POLICY_AUTOMATIC,
+                                  GTK_POLICY_AUTOMATIC);
+  gtk_box_pack_start (GTK_BOX (editor), data_editor->view, TRUE, TRUE, 0);
+  gtk_widget_show (data_editor->view);
+
+  viewport = gtk_viewport_new (NULL, NULL);
+  gtk_container_add (GTK_CONTAINER (data_editor->view), viewport);
+  gtk_widget_show (viewport);
+
+  editor->view = gimp_view_new_full_by_types (NULL,
+                                              GIMP_TYPE_PALETTE_VIEW,
+                                              GIMP_TYPE_PALETTE,
+                                              PREVIEW_WIDTH, PREVIEW_HEIGHT, 0,
+                                              FALSE, TRUE, FALSE);
+  gimp_view_renderer_palette_set_cell_size
+    (GIMP_VIEW_RENDERER_PALETTE (GIMP_VIEW (editor->view)->renderer), -1);
+  gimp_view_renderer_palette_set_draw_grid
+    (GIMP_VIEW_RENDERER_PALETTE (GIMP_VIEW (editor->view)->renderer), TRUE);
+  gtk_container_add (GTK_CONTAINER (viewport), editor->view);
+  gtk_widget_show (editor->view);
+
+  g_signal_connect (gtk_widget_get_parent (editor->view), "size-allocate",
+                    G_CALLBACK (palette_editor_viewport_size_allocate),
+                    editor);
+
+  g_signal_connect (editor->view, "entry-clicked",
+                    G_CALLBACK (palette_editor_entry_clicked),
+                    editor);
+  g_signal_connect (editor->view, "entry-selected",
+                    G_CALLBACK (palette_editor_entry_selected),
+                    editor);
+  g_signal_connect (editor->view, "entry-activated",
+                    G_CALLBACK (palette_editor_entry_activated),
+                    editor);
+  g_signal_connect (editor->view, "entry-context",
+                    G_CALLBACK (palette_editor_entry_context),
+                    editor);
+  g_signal_connect (editor->view, "color-dropped",
+                    G_CALLBACK (palette_editor_color_dropped),
+                    editor);
+
+  gimp_dnd_viewable_dest_add (editor->view,
+                              GIMP_TYPE_PALETTE,
+                              palette_editor_drop_palette,
+                              editor);
+  gimp_dnd_viewable_dest_add (gtk_widget_get_parent (editor->view),
+                              GIMP_TYPE_PALETTE,
+                              palette_editor_drop_palette,
+                              editor);
+
+  gimp_dnd_color_dest_add (gtk_widget_get_parent (editor->view),
+                           palette_editor_drop_color,
+                           editor);
+
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
+  gtk_box_pack_start (GTK_BOX (editor), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  /*  The color index number  */
+  editor->index_label = gtk_label_new ("####");
+  gtk_box_pack_start (GTK_BOX (hbox), editor->index_label, FALSE, FALSE, 0);
+  gimp_label_set_attributes (GTK_LABEL (editor->index_label),
+                             PANGO_ATTR_FAMILY, "Monospace", -1);
+  gtk_widget_show (editor->index_label);
+
+  /*  The color name entry  */
+  editor->color_name = gtk_entry_new ();
+  gtk_box_pack_start (GTK_BOX (hbox), editor->color_name, TRUE, TRUE, 0);
+  gtk_entry_set_width_chars (GTK_ENTRY (editor->color_name), 1);
+  gtk_entry_set_text (GTK_ENTRY (editor->color_name), _("Undefined"));
+  gtk_editable_set_editable (GTK_EDITABLE (editor->color_name), FALSE);
+  gtk_widget_show (editor->color_name);
+
+  g_signal_connect (editor->color_name, "changed",
+                    G_CALLBACK (palette_editor_color_name_changed),
+                    editor);
+
+  icon = gtk_image_new_from_icon_name (GIMP_ICON_GRID, GTK_ICON_SIZE_MENU);
+  gtk_box_pack_start (GTK_BOX (hbox), icon, FALSE, FALSE, 0);
+  gtk_widget_show (icon);
+
+  editor->columns_adj = (GtkAdjustment *)
+    gtk_adjustment_new (0, 0, 64, 1, 4, 0);
+  spinbutton = gimp_spin_button_new (editor->columns_adj, 1.0, 0);
+  gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
+  gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
+  gtk_widget_show (spinbutton);
+
+  gimp_help_set_help_data (spinbutton, _("Set the number of columns"), NULL);
+
+  g_signal_connect (editor->columns_adj, "value-changed",
+                    G_CALLBACK (palette_editor_columns_changed),
+                    editor);
+}
+
+static void
+gimp_palette_editor_constructed (GObject *object)
+{
+  GimpPaletteEditor *editor = GIMP_PALETTE_EDITOR (object);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  gimp_editor_add_action_button (GIMP_EDITOR (editor), "palette-editor",
+                                 "palette-editor-edit-color", NULL);
+
+  gimp_editor_add_action_button (GIMP_EDITOR (editor), "palette-editor",
+                                 "palette-editor-new-color-fg",
+                                 "palette-editor-new-color-bg",
+                                 gimp_get_toggle_behavior_mask (),
+                                 NULL);
+
+  gimp_editor_add_action_button (GIMP_EDITOR (editor), "palette-editor",
+                                 "palette-editor-delete-color", NULL);
+
+  gimp_editor_add_action_button (GIMP_EDITOR (editor), "palette-editor",
+                                 "palette-editor-zoom-out", NULL);
+
+  gimp_editor_add_action_button (GIMP_EDITOR (editor), "palette-editor",
+                                 "palette-editor-zoom-in", NULL);
+
+  gimp_editor_add_action_button (GIMP_EDITOR (editor), "palette-editor",
+                                 "palette-editor-zoom-all", NULL);
+}
+
+static void
+gimp_palette_editor_dispose (GObject *object)
+{
+  GimpPaletteEditor *editor = GIMP_PALETTE_EDITOR (object);
+
+  g_clear_pointer (&editor->color_dialog, gtk_widget_destroy);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_palette_editor_unmap (GtkWidget *widget)
+{
+  GimpPaletteEditor *editor = GIMP_PALETTE_EDITOR (widget);
+
+  if (editor->color_dialog)
+    gtk_widget_hide (editor->color_dialog);
+
+  GTK_WIDGET_CLASS (parent_class)->unmap (widget);
+}
+
+static void
+gimp_palette_editor_set_data (GimpDataEditor *editor,
+                              GimpData       *data)
+{
+  GimpPaletteEditor *palette_editor = GIMP_PALETTE_EDITOR (editor);
+
+  g_signal_handlers_block_by_func (palette_editor->columns_adj,
+                                   palette_editor_columns_changed,
+                                   editor);
+
+  if (editor->data)
+    {
+      if (palette_editor->color_dialog)
+        {
+          gtk_widget_destroy (palette_editor->color_dialog);
+          palette_editor->color_dialog = NULL;
+        }
+
+      g_signal_handlers_disconnect_by_func (editor->data,
+                                            palette_editor_invalidate_preview,
+                                            editor);
+
+      gtk_adjustment_set_value (palette_editor->columns_adj, 0);
+    }
+
+  GIMP_DATA_EDITOR_CLASS (parent_class)->set_data (editor, data);
+
+  gimp_view_set_viewable (GIMP_VIEW (palette_editor->view),
+                          GIMP_VIEWABLE (data));
+
+  if (editor->data)
+    {
+      GimpPalette *palette = GIMP_PALETTE (editor->data);
+
+      g_signal_connect (editor->data, "invalidate-preview",
+                        G_CALLBACK (palette_editor_invalidate_preview),
+                        editor);
+
+      gtk_adjustment_set_value (palette_editor->columns_adj,
+                                gimp_palette_get_columns (palette));
+
+      palette_editor_scroll_top_left (palette_editor);
+
+      palette_editor_invalidate_preview (GIMP_PALETTE (editor->data),
+                                         palette_editor);
+    }
+
+  g_signal_handlers_unblock_by_func (palette_editor->columns_adj,
+                                     palette_editor_columns_changed,
+                                     editor);
+}
+
+static void
+gimp_palette_editor_set_context (GimpDocked  *docked,
+                                 GimpContext *context)
+{
+  GimpPaletteEditor *editor = GIMP_PALETTE_EDITOR (docked);
+
+  parent_docked_iface->set_context (docked, context);
+
+  gimp_view_renderer_set_context (GIMP_VIEW (editor->view)->renderer,
+                                  context);
+}
+
+#define AUX_INFO_ZOOM_FACTOR "zoom-factor"
+
+static void
+gimp_palette_editor_set_aux_info (GimpDocked *docked,
+                                  GList      *aux_info)
+{
+  GimpPaletteEditor *editor = GIMP_PALETTE_EDITOR (docked);
+  GList             *list;
+
+  parent_docked_iface->set_aux_info (docked, aux_info);
+
+  for (list = aux_info; list; list = g_list_next (list))
+    {
+      GimpSessionInfoAux *aux = list->data;
+
+      if (! strcmp (aux->name, AUX_INFO_ZOOM_FACTOR))
+        {
+          gdouble zoom_factor;
+
+          zoom_factor = g_ascii_strtod (aux->value, NULL);
+
+          editor->zoom_factor = CLAMP (zoom_factor, 0.1, 4.0);
+        }
+    }
+}
+
+static GList *
+gimp_palette_editor_get_aux_info (GimpDocked *docked)
+{
+  GimpPaletteEditor *editor = GIMP_PALETTE_EDITOR (docked);
+  GList             *aux_info;
+
+  aux_info = parent_docked_iface->get_aux_info (docked);
+
+  if (editor->zoom_factor != 1.0)
+    {
+      GimpSessionInfoAux *aux;
+      gchar               value[G_ASCII_DTOSTR_BUF_SIZE];
+
+      g_ascii_formatd (value, sizeof (value), "%.2f", editor->zoom_factor);
+
+      aux = gimp_session_info_aux_new (AUX_INFO_ZOOM_FACTOR, value);
+      aux_info = g_list_append (aux_info, aux);
+    }
+
+  return aux_info;
+}
+
+
+/*  public functions  */
+
+GtkWidget *
+gimp_palette_editor_new (GimpContext     *context,
+                         GimpMenuFactory *menu_factory)
+{
+  g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
+
+  return g_object_new (GIMP_TYPE_PALETTE_EDITOR,
+                       "menu-factory",    menu_factory,
+                       "menu-identifier", "<PaletteEditor>",
+                       "ui-path",         "/palette-editor-popup",
+                       "data-factory",    context->gimp->palette_factory,
+                       "context",         context,
+                       "data",            gimp_context_get_palette (context),
+                       NULL);
+}
+
+void
+gimp_palette_editor_edit_color (GimpPaletteEditor *editor)
+{
+  GimpDataEditor *data_editor;
+  GimpPalette    *palette;
+
+  g_return_if_fail (GIMP_IS_PALETTE_EDITOR (editor));
+
+  data_editor = GIMP_DATA_EDITOR (editor);
+
+  if (! (data_editor->data_editable && editor->color))
+    return;
+
+  palette = GIMP_PALETTE (gimp_data_editor_get_data (data_editor));
+
+  if (! editor->color_dialog)
+    {
+      editor->color_dialog =
+        gimp_color_dialog_new (GIMP_VIEWABLE (palette),
+                               data_editor->context,
+                               _("Edit Palette Color"),
+                               GIMP_ICON_PALETTE,
+                               _("Edit Color Palette Entry"),
+                               GTK_WIDGET (editor),
+                               gimp_dialog_factory_get_singleton (),
+                               "gimp-palette-editor-color-dialog",
+                               &editor->color->color,
+                               FALSE, FALSE);
+
+      g_signal_connect (editor->color_dialog, "destroy",
+                        G_CALLBACK (gtk_widget_destroyed),
+                        &editor->color_dialog);
+
+      g_signal_connect (editor->color_dialog, "update",
+                        G_CALLBACK (palette_editor_edit_color_update),
+                        editor);
+    }
+  else
+    {
+      gimp_viewable_dialog_set_viewable (GIMP_VIEWABLE_DIALOG (editor->color_dialog),
+                                         GIMP_VIEWABLE (palette),
+                                         data_editor->context);
+      gimp_color_dialog_set_color (GIMP_COLOR_DIALOG (editor->color_dialog),
+                                   &editor->color->color);
+
+      if (! gtk_widget_get_visible (editor->color_dialog))
+        gimp_dialog_factory_position_dialog (gimp_dialog_factory_get_singleton (),
+                                             "gimp-palette-editor-color-dialog",
+                                             editor->color_dialog,
+                                             gtk_widget_get_screen (GTK_WIDGET (editor)),
+                                             gimp_widget_get_monitor (GTK_WIDGET (editor)));
+    }
+
+  gtk_window_present (GTK_WINDOW (editor->color_dialog));
+}
+
+void
+gimp_palette_editor_pick_color (GimpPaletteEditor  *editor,
+                                const GimpRGB      *color,
+                                GimpColorPickState  pick_state)
+{
+  g_return_if_fail (GIMP_IS_PALETTE_EDITOR (editor));
+  g_return_if_fail (color != NULL);
+
+  if (GIMP_DATA_EDITOR (editor)->data_editable)
+    {
+      GimpPaletteEntry *entry;
+      GimpData         *data;
+      gint              index = -1;
+
+      data = gimp_data_editor_get_data (GIMP_DATA_EDITOR (editor));
+
+      switch (pick_state)
+        {
+        case GIMP_COLOR_PICK_STATE_START:
+          if (editor->color)
+            index = editor->color->position + 1;
+
+          entry = gimp_palette_add_entry (GIMP_PALETTE (data), index,
+                                          NULL, color);
+          gimp_palette_view_select_entry (GIMP_PALETTE_VIEW (editor->view),
+                                          entry);
+          break;
+
+        case GIMP_COLOR_PICK_STATE_UPDATE:
+        case GIMP_COLOR_PICK_STATE_END:
+          gimp_palette_set_entry_color (GIMP_PALETTE (data),
+                                        editor->color->position,
+                                        color);
+          break;
+        }
+    }
+}
+
+void
+gimp_palette_editor_zoom (GimpPaletteEditor  *editor,
+                          GimpZoomType        zoom_type)
+{
+  GimpPalette *palette;
+  gdouble      zoom_factor;
+
+  g_return_if_fail (GIMP_IS_PALETTE_EDITOR (editor));
+
+  palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+  if (! palette)
+    return;
+
+  zoom_factor = editor->zoom_factor;
+
+  switch (zoom_type)
+    {
+    case GIMP_ZOOM_IN_MAX:
+    case GIMP_ZOOM_IN_MORE:
+    case GIMP_ZOOM_IN:
+      zoom_factor += 0.1;
+      break;
+
+    case GIMP_ZOOM_OUT_MORE:
+    case GIMP_ZOOM_OUT:
+      zoom_factor -= 0.1;
+      break;
+
+    case GIMP_ZOOM_OUT_MAX:
+    case GIMP_ZOOM_TO: /* abused as ZOOM_ALL */
+      {
+        GtkWidget     *scrolled_win = GIMP_DATA_EDITOR (editor)->view;
+        GtkWidget     *viewport     = gtk_bin_get_child (GTK_BIN (scrolled_win));
+        GtkAllocation  allocation;
+        gint           columns;
+        gint           rows;
+
+        gtk_widget_get_allocation (viewport, &allocation);
+
+        columns = gimp_palette_get_columns (palette);
+        if (columns == 0)
+          columns = COLUMNS;
+
+        rows = gimp_palette_get_n_colors (palette) / columns;
+        if (gimp_palette_get_n_colors (palette) % columns)
+          rows += 1;
+
+        rows = MAX (1, rows);
+
+        zoom_factor = (((gdouble) allocation.height - 2 * SPACING) /
+                       (gdouble) rows - SPACING) / ENTRY_HEIGHT;
+      }
+      break;
+    }
+
+  zoom_factor = CLAMP (zoom_factor, 0.1, 4.0);
+
+  editor->columns = gimp_palette_get_columns (palette);
+  if (editor->columns == 0)
+    editor->columns = COLUMNS;
+
+  palette_editor_resize (editor, editor->last_width, zoom_factor);
+
+  palette_editor_scroll_top_left (editor);
+}
+
+gint
+gimp_palette_editor_get_index (GimpPaletteEditor *editor,
+                               const GimpRGB     *search)
+{
+  GimpPalette *palette;
+
+  g_return_val_if_fail (GIMP_IS_PALETTE_EDITOR (editor), -1);
+  g_return_val_if_fail (search != NULL, -1);
+
+  palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+  if (palette && gimp_palette_get_n_colors (palette) > 0)
+    {
+      GimpPaletteEntry *entry;
+
+      entry = gimp_palette_find_entry (palette, search, editor->color);
+
+      if (entry)
+        return entry->position;
+    }
+
+  return -1;
+}
+
+gboolean
+gimp_palette_editor_set_index (GimpPaletteEditor *editor,
+                               gint               index,
+                               GimpRGB           *color)
+{
+  GimpPalette *palette;
+
+  g_return_val_if_fail (GIMP_IS_PALETTE_EDITOR (editor), FALSE);
+
+  palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+  if (palette && gimp_palette_get_n_colors (palette) > 0)
+    {
+      GimpPaletteEntry *entry;
+
+      index = CLAMP (index, 0, gimp_palette_get_n_colors (palette) - 1);
+
+      entry = gimp_palette_get_entry (palette, index);
+
+      gimp_palette_view_select_entry (GIMP_PALETTE_VIEW (editor->view),
+                                      entry);
+
+      if (color)
+        *color = editor->color->color;
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+gint
+gimp_palette_editor_max_index (GimpPaletteEditor *editor)
+{
+  GimpPalette *palette;
+
+  g_return_val_if_fail (GIMP_IS_PALETTE_EDITOR (editor), -1);
+
+  palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+  if (palette && gimp_palette_get_n_colors (palette) > 0)
+    {
+      return gimp_palette_get_n_colors (palette) - 1;
+    }
+
+  return -1;
+}
+
+
+/*  private functions  */
+
+static void
+palette_editor_invalidate_preview (GimpPalette       *palette,
+                                   GimpPaletteEditor *editor)
+{
+  editor->columns = gimp_palette_get_columns (palette);
+  if (editor->columns == 0)
+    editor->columns = COLUMNS;
+
+  palette_editor_resize (editor, editor->last_width, editor->zoom_factor);
+}
+
+static void
+palette_editor_viewport_size_allocate (GtkWidget         *widget,
+                                       GtkAllocation     *allocation,
+                                       GimpPaletteEditor *editor)
+{
+  if (allocation->width != editor->last_width)
+    {
+      palette_editor_resize (editor, allocation->width,
+                             editor->zoom_factor);
+    }
+}
+
+static void
+palette_editor_drop_palette (GtkWidget    *widget,
+                             gint          x,
+                             gint          y,
+                             GimpViewable *viewable,
+                             gpointer      data)
+{
+  gimp_data_editor_set_data (GIMP_DATA_EDITOR (data), GIMP_DATA (viewable));
+}
+
+static void
+palette_editor_drop_color (GtkWidget     *widget,
+                           gint           x,
+                           gint           y,
+                           const GimpRGB *color,
+                           gpointer       data)
+{
+  GimpPaletteEditor *editor = data;
+
+  if (GIMP_DATA_EDITOR (editor)->data_editable)
+    {
+      GimpPalette      *palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+      GimpPaletteEntry *entry;
+
+      entry = gimp_palette_add_entry (palette, -1, NULL, color);
+      gimp_palette_view_select_entry (GIMP_PALETTE_VIEW (editor->view), entry);
+    }
+}
+
+
+/*  palette view callbacks  */
+
+static void
+palette_editor_entry_clicked (GimpPaletteView   *view,
+                              GimpPaletteEntry  *entry,
+                              GdkModifierType    state,
+                              GimpPaletteEditor *editor)
+{
+  if (entry)
+    {
+      GimpDataEditor *data_editor = GIMP_DATA_EDITOR (editor);
+
+      if (state & gimp_get_toggle_behavior_mask ())
+        gimp_context_set_background (data_editor->context, &entry->color);
+      else
+        gimp_context_set_foreground (data_editor->context, &entry->color);
+    }
+}
+
+static void
+palette_editor_entry_selected (GimpPaletteView   *view,
+                               GimpPaletteEntry  *entry,
+                               GimpPaletteEditor *editor)
+{
+  GimpDataEditor *data_editor = GIMP_DATA_EDITOR (editor);
+
+  if (editor->color != entry)
+    {
+      gchar index[8];
+
+      editor->color = entry;
+
+      if (entry)
+        g_snprintf (index, sizeof (index), "%04i", entry->position);
+      else
+        g_snprintf (index, sizeof (index), "####");
+
+      gtk_label_set_text (GTK_LABEL (editor->index_label), index);
+
+      g_signal_handlers_block_by_func (editor->color_name,
+                                       palette_editor_color_name_changed,
+                                       editor);
+
+      gtk_entry_set_text (GTK_ENTRY (editor->color_name),
+                          entry ? entry->name : _("Undefined"));
+
+      g_signal_handlers_unblock_by_func (editor->color_name,
+                                         palette_editor_color_name_changed,
+                                         editor);
+
+      gtk_editable_set_editable (GTK_EDITABLE (editor->color_name),
+                                 entry && data_editor->data_editable);
+
+      gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
+                              gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
+    }
+}
+
+static void
+palette_editor_entry_activated (GimpPaletteView   *view,
+                                GimpPaletteEntry  *entry,
+                                GimpPaletteEditor *editor)
+{
+  if (GIMP_DATA_EDITOR (editor)->data_editable && entry == editor->color)
+    {
+      gimp_ui_manager_activate_action (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
+                                       "palette-editor",
+                                       "palette-editor-edit-color");
+    }
+}
+
+static void
+palette_editor_entry_context (GimpPaletteView   *view,
+                              GimpPaletteEntry  *entry,
+                              GimpPaletteEditor *editor)
+{
+  gimp_editor_popup_menu (GIMP_EDITOR (editor), NULL, NULL);
+}
+
+static void
+palette_editor_color_dropped (GimpPaletteView   *view,
+                              GimpPaletteEntry  *entry,
+                              const GimpRGB     *color,
+                              GimpPaletteEditor *editor)
+{
+  if (GIMP_DATA_EDITOR (editor)->data_editable)
+    {
+      GimpPalette *palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+      gint         pos     = -1;
+
+      if (entry)
+        pos = entry->position;
+
+      entry = gimp_palette_add_entry (palette, pos, NULL, color);
+      gimp_palette_view_select_entry (GIMP_PALETTE_VIEW (editor->view), entry);
+    }
+}
+
+
+/*  color name and columns callbacks  */
+
+static void
+palette_editor_color_name_changed (GtkWidget         *widget,
+                                   GimpPaletteEditor *editor)
+{
+  if (GIMP_DATA_EDITOR (editor)->data)
+    {
+      GimpPalette *palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+      const gchar *name;
+
+      name = gtk_entry_get_text (GTK_ENTRY (editor->color_name));
+
+      gimp_palette_set_entry_name (palette, editor->color->position, name);
+    }
+}
+
+static void
+palette_editor_columns_changed (GtkAdjustment     *adj,
+                                GimpPaletteEditor *editor)
+{
+  if (GIMP_DATA_EDITOR (editor)->data)
+    {
+      GimpPalette *palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+      gimp_palette_set_columns (palette,
+                                ROUND (gtk_adjustment_get_value (adj)));
+    }
+}
+
+
+/*  misc utils  */
+
+static void
+palette_editor_resize (GimpPaletteEditor *editor,
+                       gint               width,
+                       gdouble            zoom_factor)
+{
+  GimpPalette *palette;
+  gint         rows;
+  gint         preview_width;
+  gint         preview_height;
+
+  palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+  if (! palette)
+    return;
+
+  editor->zoom_factor = zoom_factor;
+  editor->last_width  = width;
+  editor->col_width   = width / (editor->columns + 1) - SPACING;
+
+  if (editor->col_width < 0)
+    editor->col_width = 0;
+
+  rows = gimp_palette_get_n_colors (palette) / editor->columns;
+  if (gimp_palette_get_n_colors (palette) % editor->columns)
+    rows += 1;
+
+  preview_width  = (editor->col_width + SPACING) * editor->columns;
+  preview_height = (rows *
+                    (SPACING + (gint) (ENTRY_HEIGHT * editor->zoom_factor)));
+
+  if (preview_height > GIMP_VIEWABLE_MAX_PREVIEW_SIZE)
+    preview_height = ((GIMP_VIEWABLE_MAX_PREVIEW_SIZE - SPACING) / rows) * rows;
+
+  gimp_view_renderer_set_size_full (GIMP_VIEW (editor->view)->renderer,
+                                    preview_width  + SPACING,
+                                    preview_height + SPACING, 0);
+}
+
+static void
+palette_editor_scroll_top_left (GimpPaletteEditor *palette_editor)
+{
+  GimpDataEditor *data_editor = GIMP_DATA_EDITOR (palette_editor);
+  GtkAdjustment  *hadj;
+  GtkAdjustment  *vadj;
+
+  if (! data_editor->view)
+    return;
+
+  hadj = gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (data_editor->view));
+  vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (data_editor->view));
+
+  if (hadj)
+    gtk_adjustment_set_value (hadj, 0.0);
+  if (vadj)
+    gtk_adjustment_set_value (vadj, 0.0);
+}
+
+static void
+palette_editor_edit_color_update (GimpColorDialog      *dialog,
+                                  const GimpRGB        *color,
+                                  GimpColorDialogState  state,
+                                  GimpPaletteEditor    *editor)
+{
+  GimpPalette *palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
+
+  switch (state)
+    {
+    case GIMP_COLOR_DIALOG_UPDATE:
+      break;
+
+    case GIMP_COLOR_DIALOG_OK:
+      if (editor->color)
+        {
+          editor->color->color = *color;
+          gimp_data_dirty (GIMP_DATA (palette));
+        }
+      /* Fallthrough */
+
+    case GIMP_COLOR_DIALOG_CANCEL:
+      gtk_widget_hide (editor->color_dialog);
+      break;
+    }
+}