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675ddc85a1
An easy to use GTK integration library. Meant as a GtkVideo alternative. While GtkVideo is more of a simple example of video playback under GTK4, this acts as a full-fledged video player in the form of a GtkWidget that can be placed anywhere within application. The widget offers customization options for both top header and bottom playback controls panels. The Clapper playback API is exposed under widget "player" property making it easy for the programmer to set media and control playback programically. The new library will be distributed with Clapper player. This includes public headers and GObject Introspection support. Licensed under LGPL-2.1-or-later.
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/* Clapper GTK Integration Library
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* Copyright (C) 2024 Rafał Dzięgiel <rafostar.github@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* ClapperGtkPreviousItemButton:
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*
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* A #GtkButton for selecting previous queue item.
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*/
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#include <clapper/clapper.h>
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#include "clapper-gtk-previous-item-button.h"
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#include "clapper-gtk-utils.h"
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#define GST_CAT_DEFAULT clapper_gtk_previous_item_button_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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struct _ClapperGtkPreviousItemButton
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{
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GtkButton parent;
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GBinding *n_items_binding;
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GBinding *current_index_binding;
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};
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#define parent_class clapper_gtk_previous_item_button_parent_class
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G_DEFINE_TYPE (ClapperGtkPreviousItemButton, clapper_gtk_previous_item_button, GTK_TYPE_BUTTON)
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static gboolean
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_transform_sensitive_func (GBinding *binding, const GValue *from_value,
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GValue *to_value, ClapperGtkPreviousItemButton *self)
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{
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ClapperQueue *queue = CLAPPER_QUEUE_CAST (g_binding_dup_source (binding));
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guint current_index;
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gboolean can_skip;
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if (G_UNLIKELY (queue == NULL))
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return FALSE;
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current_index = clapper_queue_get_current_index (queue);
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can_skip = (current_index != CLAPPER_QUEUE_INVALID_POSITION
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&& current_index > 0);
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gst_object_unref (queue);
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g_value_set_boolean (to_value, can_skip);
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GST_DEBUG_OBJECT (self, "Set sensitive: %s", (can_skip) ? "yes" : "no");
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return TRUE;
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}
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/**
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* clapper_gtk_previous_item_button_new:
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*
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* Creates a new #ClapperGtkPreviousItemButton to play previous #ClapperMediaItem.
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*
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* Returns: a new previous item button #GtkWidget.
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*/
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GtkWidget *
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clapper_gtk_previous_item_button_new (void)
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{
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return g_object_new (CLAPPER_GTK_TYPE_PREVIOUS_ITEM_BUTTON, NULL);
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}
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static void
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clapper_gtk_previous_item_button_init (ClapperGtkPreviousItemButton *self)
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{
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gtk_widget_set_sensitive (GTK_WIDGET (self), FALSE);
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gtk_button_set_icon_name (GTK_BUTTON (self), "media-skip-backward-symbolic");
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gtk_actionable_set_action_name (GTK_ACTIONABLE (self), "video.previous-item");
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}
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static void
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clapper_gtk_previous_item_button_map (GtkWidget *widget)
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{
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ClapperGtkPreviousItemButton *self = CLAPPER_GTK_PREVIOUS_ITEM_BUTTON_CAST (widget);
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ClapperPlayer *player;
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if ((player = clapper_gtk_get_player_from_ancestor (widget))) {
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ClapperQueue *queue = clapper_player_get_queue (player);
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self->n_items_binding = g_object_bind_property_full (queue, "n-items",
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self, "sensitive", G_BINDING_DEFAULT, // Since we sync below, no need to do it twice
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(GBindingTransformFunc) _transform_sensitive_func,
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NULL, self, NULL);
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self->current_index_binding = g_object_bind_property_full (queue, "current-index",
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self, "sensitive", G_BINDING_SYNC_CREATE,
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(GBindingTransformFunc) _transform_sensitive_func,
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NULL, self, NULL);
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}
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GTK_WIDGET_CLASS (parent_class)->map (widget);
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}
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static void
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clapper_gtk_previous_item_button_unmap (GtkWidget *widget)
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{
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ClapperGtkPreviousItemButton *self = CLAPPER_GTK_PREVIOUS_ITEM_BUTTON_CAST (widget);
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g_clear_pointer (&self->n_items_binding, g_binding_unbind);
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g_clear_pointer (&self->current_index_binding, g_binding_unbind);
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GTK_WIDGET_CLASS (parent_class)->unmap (widget);
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}
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static void
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clapper_gtk_previous_item_button_class_init (ClapperGtkPreviousItemButtonClass *klass)
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{
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GtkWidgetClass *widget_class = (GtkWidgetClass *) klass;
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "clappergtkpreviousitembutton", 0,
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"Clapper GTK Previous Item Button");
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widget_class->map = clapper_gtk_previous_item_button_map;
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widget_class->unmap = clapper_gtk_previous_item_button_unmap;
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}
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