PIKApp/app/widgets/pikabrushfactoryview.c

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2023-09-26 00:35:21 +02:00
/* 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
*
* pikabrushfactoryview.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* 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 "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pikacontainer.h"
#include "core/pikacontext.h"
#include "core/pikabrush.h"
#include "core/pikabrushgenerated.h"
#include "core/pikadatafactory.h"
#include "pikabrushfactoryview.h"
#include "pikacontainerview.h"
#include "pikaeditor.h"
#include "pikamenufactory.h"
#include "pikaviewrenderer.h"
#include "pika-intl.h"
enum
{
SPACING_CHANGED,
LAST_SIGNAL
};
static void pika_brush_factory_view_dispose (GObject *object);
static void pika_brush_factory_view_select_item (PikaContainerEditor *editor,
PikaViewable *viewable);
static void pika_brush_factory_view_spacing_changed (PikaBrush *brush,
PikaBrushFactoryView *view);
static void pika_brush_factory_view_spacing_update (GtkAdjustment *adjustment,
PikaBrushFactoryView *view);
G_DEFINE_TYPE (PikaBrushFactoryView, pika_brush_factory_view,
PIKA_TYPE_DATA_FACTORY_VIEW)
#define parent_class pika_brush_factory_view_parent_class
static guint pika_brush_factory_view_signals[LAST_SIGNAL] = { 0 };
static void
pika_brush_factory_view_class_init (PikaBrushFactoryViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaContainerEditorClass *editor_class = PIKA_CONTAINER_EDITOR_CLASS (klass);
object_class->dispose = pika_brush_factory_view_dispose;
editor_class->select_item = pika_brush_factory_view_select_item;
/**
* PikaBrushFactoryView::spacing-changed:
* @view: the #PikaBrushFactoryView.
*
* Emitted when the spacing changed.
*/
pika_brush_factory_view_signals[SPACING_CHANGED] =
g_signal_new ("spacing-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (PikaBrushFactoryViewClass, spacing_changed),
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}
static void
pika_brush_factory_view_init (PikaBrushFactoryView *view)
{
view->spacing_adjustment = gtk_adjustment_new (0.0, 1.0, 5000.0,
1.0, 10.0, 0.0);
view->spacing_scale = pika_spin_scale_new (view->spacing_adjustment,
_("Spacing"), 1);
pika_spin_scale_set_scale_limits (PIKA_SPIN_SCALE (view->spacing_scale),
1.0, 200.0);
pika_help_set_help_data (view->spacing_scale,
_("Percentage of width of brush"),
NULL);
g_signal_connect (view->spacing_adjustment, "value-changed",
G_CALLBACK (pika_brush_factory_view_spacing_update),
view);
}
static void
pika_brush_factory_view_dispose (GObject *object)
{
PikaBrushFactoryView *view = PIKA_BRUSH_FACTORY_VIEW (object);
PikaContainerEditor *editor = PIKA_CONTAINER_EDITOR (object);
if (view->spacing_changed_handler_id)
{
PikaDataFactory *factory;
PikaContainer *container;
factory = pika_data_factory_view_get_data_factory (PIKA_DATA_FACTORY_VIEW (editor));
container = pika_data_factory_get_container (factory);
pika_container_remove_handler (container,
view->spacing_changed_handler_id);
view->spacing_changed_handler_id = 0;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
GtkWidget *
pika_brush_factory_view_new (PikaViewType view_type,
PikaDataFactory *factory,
PikaContext *context,
gboolean change_brush_spacing,
gint view_size,
gint view_border_width,
PikaMenuFactory *menu_factory)
{
PikaBrushFactoryView *factory_view;
PikaContainerEditor *editor;
g_return_val_if_fail (PIKA_IS_DATA_FACTORY (factory), NULL);
g_return_val_if_fail (PIKA_IS_CONTEXT (context), NULL);
g_return_val_if_fail (view_size > 0 &&
view_size <= PIKA_VIEWABLE_MAX_PREVIEW_SIZE, NULL);
g_return_val_if_fail (view_border_width >= 0 &&
view_border_width <= PIKA_VIEW_MAX_BORDER_WIDTH,
NULL);
g_return_val_if_fail (menu_factory == NULL ||
PIKA_IS_MENU_FACTORY (menu_factory), NULL);
factory_view = g_object_new (PIKA_TYPE_BRUSH_FACTORY_VIEW,
"view-type", view_type,
"data-factory", factory,
"context", context,
"view-size", view_size,
"view-border-width", view_border_width,
"menu-factory", menu_factory,
"menu-identifier", "<Brushes>",
"ui-path", "/brushes-popup",
"action-group", "brushes",
NULL);
factory_view->change_brush_spacing = change_brush_spacing;
editor = PIKA_CONTAINER_EDITOR (factory_view);
pika_editor_add_action_button (PIKA_EDITOR (editor->view),
"brushes", "brushes-open-as-image",
NULL);
gtk_box_pack_end (GTK_BOX (editor->view), factory_view->spacing_scale,
FALSE, FALSE, 0);
gtk_widget_show (factory_view->spacing_scale);
factory_view->spacing_changed_handler_id =
pika_container_add_handler (pika_data_factory_get_container (factory), "spacing-changed",
G_CALLBACK (pika_brush_factory_view_spacing_changed),
factory_view);
return GTK_WIDGET (factory_view);
}
static void
pika_brush_factory_view_select_item (PikaContainerEditor *editor,
PikaViewable *viewable)
{
PikaBrushFactoryView *view = PIKA_BRUSH_FACTORY_VIEW (editor);
PikaContainer *container;
gboolean spacing_sensitive = FALSE;
if (PIKA_CONTAINER_EDITOR_CLASS (parent_class)->select_item)
PIKA_CONTAINER_EDITOR_CLASS (parent_class)->select_item (editor, viewable);
container = pika_container_view_get_container (editor->view);
if (viewable && pika_container_have (container, PIKA_OBJECT (viewable)))
{
PikaBrush *brush = PIKA_BRUSH (viewable);
spacing_sensitive = TRUE;
g_signal_handlers_block_by_func (view->spacing_adjustment,
pika_brush_factory_view_spacing_update,
view);
gtk_adjustment_set_value (view->spacing_adjustment,
pika_brush_get_spacing (brush));
g_signal_handlers_unblock_by_func (view->spacing_adjustment,
pika_brush_factory_view_spacing_update,
view);
}
gtk_widget_set_sensitive (view->spacing_scale, spacing_sensitive);
}
static void
pika_brush_factory_view_spacing_changed (PikaBrush *brush,
PikaBrushFactoryView *view)
{
PikaContainerEditor *editor = PIKA_CONTAINER_EDITOR (view);
PikaContext *context;
context = pika_container_view_get_context (editor->view);
if (brush == pika_context_get_brush (context))
{
g_signal_handlers_block_by_func (view->spacing_adjustment,
pika_brush_factory_view_spacing_update,
view);
gtk_adjustment_set_value (view->spacing_adjustment,
pika_brush_get_spacing (brush));
g_signal_handlers_unblock_by_func (view->spacing_adjustment,
pika_brush_factory_view_spacing_update,
view);
}
}
static void
pika_brush_factory_view_spacing_update (GtkAdjustment *adjustment,
PikaBrushFactoryView *view)
{
PikaContainerEditor *editor = PIKA_CONTAINER_EDITOR (view);
PikaContext *context;
PikaBrush *brush;
context = pika_container_view_get_context (editor->view);
brush = pika_context_get_brush (context);
if (brush && view->change_brush_spacing)
{
g_signal_handlers_block_by_func (brush,
pika_brush_factory_view_spacing_changed,
view);
pika_brush_set_spacing (brush, gtk_adjustment_get_value (adjustment));
g_signal_handlers_unblock_by_func (brush,
pika_brush_factory_view_spacing_changed,
view);
}
g_signal_emit (view, pika_brush_factory_view_signals[SPACING_CHANGED], 0);
}