PIKApp/app/widgets/pikacolormapeditor.c

474 lines
17 KiB
C

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 <gegl.h>
#include <gtk/gtk.h>
#include "libpikacolor/pikacolor.h"
#include "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pika.h"
#include "core/pikacontext.h"
#include "core/pikaimage.h"
#include "core/pikaimage-colormap.h"
#include "core/pikapalette.h"
#include "core/pikaprojection.h"
#include "pikacolordialog.h"
#include "pikacolormapeditor.h"
#include "pikacolormapselection.h"
#include "pikadialogfactory.h"
#include "pikadocked.h"
#include "pikamenufactory.h"
#include "pikawidgets-utils.h"
#include "pika-intl.h"
static void pika_colormap_editor_docked_iface_init (PikaDockedInterface *face);
static void pika_colormap_editor_constructed (GObject *object);
static void pika_colormap_editor_dispose (GObject *object);
static void pika_colormap_editor_unmap (GtkWidget *widget);
static void pika_colormap_editor_set_context (PikaDocked *docked,
PikaContext *context);
static void pika_colormap_editor_color_update (PikaColorDialog *dialog,
const PikaRGB *color,
PikaColorDialogState state,
PikaColormapEditor *editor);
static gboolean pika_colormap_editor_entry_button_press (GtkWidget *widget,
GdkEvent *event,
gpointer user_data);
static gboolean pika_colormap_editor_entry_popup (GtkWidget *widget,
gpointer user_data);
static void pika_colormap_editor_color_clicked (PikaColormapEditor *editor,
PikaPaletteEntry *entry,
GdkModifierType state);
static void pika_colormap_editor_notify_index (PikaColormapSelection *selection,
const GParamSpec *pspec,
PikaColormapEditor *editor);
G_DEFINE_TYPE_WITH_CODE (PikaColormapEditor, pika_colormap_editor,
PIKA_TYPE_IMAGE_EDITOR,
G_IMPLEMENT_INTERFACE (PIKA_TYPE_DOCKED,
pika_colormap_editor_docked_iface_init))
#define parent_class pika_colormap_editor_parent_class
static PikaDockedInterface *parent_docked_iface = NULL;
static void
pika_colormap_editor_class_init (PikaColormapEditorClass* klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->constructed = pika_colormap_editor_constructed;
object_class->dispose = pika_colormap_editor_dispose;
widget_class->unmap = pika_colormap_editor_unmap;
}
static void
pika_colormap_editor_docked_iface_init (PikaDockedInterface *iface)
{
parent_docked_iface = g_type_interface_peek_parent (iface);
if (! parent_docked_iface)
parent_docked_iface = g_type_default_interface_peek (PIKA_TYPE_DOCKED);
iface->set_context = pika_colormap_editor_set_context;
}
static void
pika_colormap_editor_init (PikaColormapEditor *editor)
{
}
static void
pika_colormap_editor_constructed (GObject *object)
{
PikaColormapEditor *editor = PIKA_COLORMAP_EDITOR (object);
GdkModifierType extend_mask;
GdkModifierType modify_mask;
G_OBJECT_CLASS (parent_class)->constructed (object);
/* Editor buttons. */
extend_mask = gtk_widget_get_modifier_mask (GTK_WIDGET (object),
GDK_MODIFIER_INTENT_EXTEND_SELECTION);
modify_mask = gtk_widget_get_modifier_mask (GTK_WIDGET (object),
GDK_MODIFIER_INTENT_MODIFY_SELECTION);
pika_editor_add_action_button (PIKA_EDITOR (editor), "colormap",
"colormap-edit-color",
NULL);
pika_editor_add_action_button (PIKA_EDITOR (editor), "colormap",
"colormap-delete-color",
NULL);
pika_editor_add_action_button (PIKA_EDITOR (editor), "colormap",
"colormap-add-color-from-fg",
"colormap-add-color-from-bg",
pika_get_toggle_behavior_mask (),
NULL);
pika_editor_add_action_button (PIKA_EDITOR (editor), "colormap",
"colormap-selection-replace",
"colormap-selection-add",
extend_mask,
"colormap-selection-subtract",
modify_mask,
"colormap-selection-intersect",
extend_mask | modify_mask,
NULL);
}
static void
pika_colormap_editor_dispose (GObject *object)
{
PikaColormapEditor *editor = PIKA_COLORMAP_EDITOR (object);
g_clear_pointer (&editor->color_dialog, gtk_widget_destroy);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_colormap_editor_unmap (GtkWidget *widget)
{
PikaColormapEditor *editor = PIKA_COLORMAP_EDITOR (widget);
if (editor->color_dialog)
gtk_widget_hide (editor->color_dialog);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
static void
pika_colormap_editor_set_context (PikaDocked *docked,
PikaContext *context)
{
PikaColormapEditor *editor = PIKA_COLORMAP_EDITOR (docked);
parent_docked_iface->set_context (docked, context);
if (editor->selection)
gtk_widget_destroy (editor->selection);
editor->selection = NULL;
/* Main selection widget. */
if (context)
{
editor->selection = pika_colormap_selection_new (context);
gtk_box_pack_start (GTK_BOX (editor), editor->selection, TRUE, TRUE, 0);
gtk_widget_show (editor->selection);
g_signal_connect_swapped (editor->selection, "color-clicked",
G_CALLBACK (pika_colormap_editor_color_clicked),
editor);
g_signal_connect_swapped (editor->selection, "color-activated",
G_CALLBACK (pika_colormap_editor_edit_color),
editor);
g_signal_connect (editor->selection, "button-press-event",
G_CALLBACK (pika_colormap_editor_entry_button_press),
editor);
g_signal_connect (editor->selection, "popup-menu",
G_CALLBACK (pika_colormap_editor_entry_popup),
editor);
g_signal_connect (editor->selection, "notify::index",
G_CALLBACK (pika_colormap_editor_notify_index),
editor);
}
}
/* public functions */
GtkWidget *
pika_colormap_editor_new (PikaMenuFactory *menu_factory)
{
g_return_val_if_fail (PIKA_IS_MENU_FACTORY (menu_factory), NULL);
return g_object_new (PIKA_TYPE_COLORMAP_EDITOR,
"menu-factory", menu_factory,
"menu-identifier", "<Colormap>",
"ui-path", "/colormap-popup",
NULL);
}
void
pika_colormap_editor_edit_color (PikaColormapEditor *editor)
{
PikaImage *image;
PikaRGB color;
gchar *desc;
gint index;
g_return_if_fail (PIKA_IS_COLORMAP_EDITOR (editor));
image = PIKA_IMAGE_EDITOR (editor)->image;
index = pika_colormap_selection_get_index (PIKA_COLORMAP_SELECTION (editor->selection),
NULL);
if (index == -1)
/* No colormap. */
return;
pika_image_get_colormap_entry (image, index, &color);
desc = g_strdup_printf (_("Edit colormap entry #%d"), index);
if (! editor->color_dialog)
{
editor->color_dialog =
pika_color_dialog_new (PIKA_VIEWABLE (image),
PIKA_IMAGE_EDITOR (editor)->context,
FALSE,
_("Edit Colormap Entry"),
PIKA_ICON_COLORMAP,
desc,
GTK_WIDGET (editor),
pika_dialog_factory_get_singleton (),
"pika-colormap-editor-color-dialog",
(const PikaRGB *) &color,
TRUE, 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 (pika_colormap_editor_color_update),
editor);
}
else
{
pika_viewable_dialog_set_viewables (PIKA_VIEWABLE_DIALOG (editor->color_dialog),
g_list_prepend (NULL, image),
PIKA_IMAGE_EDITOR (editor)->context);
g_object_set (editor->color_dialog, "description", desc, NULL);
pika_color_dialog_set_color (PIKA_COLOR_DIALOG (editor->color_dialog),
&color);
if (! gtk_widget_get_visible (editor->color_dialog))
pika_dialog_factory_position_dialog (pika_dialog_factory_get_singleton (),
"pika-colormap-editor-color-dialog",
editor->color_dialog,
pika_widget_get_monitor (GTK_WIDGET (editor)));
}
g_free (desc);
gtk_window_present (GTK_WINDOW (editor->color_dialog));
}
void
pika_colormap_editor_delete_color (PikaColormapEditor *editor)
{
PikaColormapSelection *selection;
PikaImage *image;
gint index;
g_return_if_fail (PIKA_IS_COLORMAP_EDITOR (editor));
g_return_if_fail (pika_colormap_editor_is_color_deletable (editor));
image = PIKA_IMAGE_EDITOR (editor)->image;
selection = PIKA_COLORMAP_SELECTION (editor->selection);
index = pika_colormap_selection_get_index (selection, NULL);
pika_image_delete_colormap_entry (image, index, TRUE);
}
gboolean
pika_colormap_editor_is_color_deletable (PikaColormapEditor *editor)
{
PikaColormapSelection *selection;
PikaImage *image;
gint index;
g_return_val_if_fail (PIKA_IS_COLORMAP_EDITOR (editor), FALSE);
image = PIKA_IMAGE_EDITOR (editor)->image;
selection = PIKA_COLORMAP_SELECTION (editor->selection);
index = pika_colormap_selection_get_index (selection, NULL);
if (index == -1)
/* No colormap. */
return FALSE;
else
return ! pika_image_colormap_is_index_used (image, index);
}
gint
pika_colormap_editor_get_index (PikaColormapEditor *editor,
const PikaRGB *search)
{
g_return_val_if_fail (PIKA_IS_COLORMAP_EDITOR (editor), 0);
return pika_colormap_selection_get_index (PIKA_COLORMAP_SELECTION (editor->selection), search);
}
gboolean
pika_colormap_editor_set_index (PikaColormapEditor *editor,
gint index,
PikaRGB *color)
{
g_return_val_if_fail (PIKA_IS_COLORMAP_EDITOR (editor), FALSE);
return pika_colormap_selection_set_index (PIKA_COLORMAP_SELECTION (editor->selection), index, color);
}
gint
pika_colormap_editor_max_index (PikaColormapEditor *editor)
{
g_return_val_if_fail (PIKA_IS_COLORMAP_EDITOR (editor), -1);
return pika_colormap_selection_max_index (PIKA_COLORMAP_SELECTION (editor->selection));
}
static void
pika_colormap_editor_color_update (PikaColorDialog *dialog,
const PikaRGB *color,
PikaColorDialogState state,
PikaColormapEditor *editor)
{
PikaImageEditor *image_editor = PIKA_IMAGE_EDITOR (editor);
PikaImage *image = image_editor->image;
gboolean push_undo = FALSE;
switch (state)
{
case PIKA_COLOR_DIALOG_OK:
push_undo = TRUE;
if (state & pika_get_toggle_behavior_mask ())
pika_context_set_background (image_editor->context, color);
else
pika_context_set_foreground (image_editor->context, color);
/* Fall through */
case PIKA_COLOR_DIALOG_CANCEL:
gtk_widget_hide (editor->color_dialog);
break;
case PIKA_COLOR_DIALOG_UPDATE:
break;
}
if (image)
{
gint col_index;
col_index = pika_colormap_selection_get_index (PIKA_COLORMAP_SELECTION (editor->selection),
NULL);
if (push_undo)
{
PikaRGB old_color;
pika_color_selection_get_old_color (
PIKA_COLOR_SELECTION (dialog->selection), &old_color);
/* Restore old color for undo */
pika_image_set_colormap_entry (image, col_index, &old_color,
FALSE);
}
pika_image_set_colormap_entry (image, col_index, color,
push_undo);
if (push_undo)
pika_image_flush (image);
else
pika_projection_flush (pika_image_get_projection (image));
}
}
static gboolean
pika_colormap_editor_entry_button_press (GtkWidget *widget,
GdkEvent *event,
gpointer user_data)
{
if (gdk_event_triggers_context_menu (event))
{
pika_editor_popup_menu_at_pointer (PIKA_EDITOR (user_data), event);
return GDK_EVENT_STOP;
}
return GDK_EVENT_PROPAGATE;
}
static gboolean
pika_colormap_editor_entry_popup (GtkWidget *widget,
gpointer user_data)
{
PikaColormapEditor *editor = PIKA_COLORMAP_EDITOR (user_data);
PikaColormapSelection *selection = PIKA_COLORMAP_SELECTION (widget);
PikaPaletteEntry *selected;
GdkRectangle rect;
selected = pika_colormap_selection_get_selected_entry (selection);
if (!selected)
return GDK_EVENT_PROPAGATE;
pika_colormap_selection_get_entry_rect (selection, selected, &rect);
return pika_editor_popup_menu_at_rect (PIKA_EDITOR (editor),
gtk_widget_get_window (widget),
&rect, GDK_GRAVITY_CENTER, GDK_GRAVITY_NORTH_WEST,
NULL);
}
static void
pika_colormap_editor_color_clicked (PikaColormapEditor *editor,
PikaPaletteEntry *entry,
GdkModifierType state)
{
PikaImageEditor *image_editor = PIKA_IMAGE_EDITOR (editor);
if (state & pika_get_toggle_behavior_mask ())
pika_context_set_background (image_editor->context, &entry->color);
else
pika_context_set_foreground (image_editor->context, &entry->color);
}
static void
pika_colormap_editor_notify_index (PikaColormapSelection *selection,
const GParamSpec *pspec,
PikaColormapEditor *editor)
{
g_return_if_fail (PIKA_IS_COLORMAP_EDITOR (editor));
pika_editor_set_action_sensitive (PIKA_EDITOR (editor), "colormap",
"colormap-delete-color",
pika_colormap_editor_is_color_deletable (editor),
_("The color is used in this indexed image"));
}