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https://github.com/Rafostar/clapper.git
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clapper-gtk: Add video placeholder widget
A simple placeholder to be shown when "ClapperGtkVideo" is used with a video sink that cannot be embedded in it (with a text explaining that).
This commit is contained in:
Rafał Dzięgiel
145
src/lib/clapper-gtk/clapper-gtk-video-placeholder.c
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145
src/lib/clapper-gtk/clapper-gtk-video-placeholder.c
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/* 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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#include "config.h"
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#include <glib/gi18n-lib.h>
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#include <gst/gst.h>
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#include "clapper-gtk-video-placeholder-private.h"
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#include "clapper-gtk-utils-private.h"
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#define NORMAL_SPACING 16
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#define ADAPT_SPACING 8
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#define GST_CAT_DEFAULT clapper_gtk_video_placeholder_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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struct _ClapperGtkVideoPlaceholder
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{
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ClapperGtkContainer parent;
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GtkWidget *box;
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GtkWidget *title_label;
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ClapperPlayer *player;
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};
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#define parent_class clapper_gtk_video_placeholder_parent_class
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G_DEFINE_TYPE (ClapperGtkVideoPlaceholder, clapper_gtk_video_placeholder, CLAPPER_GTK_TYPE_CONTAINER)
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static void
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adapt_cb (ClapperGtkContainer *container, gboolean adapt,
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ClapperGtkVideoPlaceholder *self)
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{
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GST_DEBUG_OBJECT (self, "Adapted: %s", (adapt) ? "yes" : "no");
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gtk_box_set_spacing (GTK_BOX (self->box), (adapt) ? ADAPT_SPACING : NORMAL_SPACING);
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if (adapt) {
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gtk_widget_add_css_class (GTK_WIDGET (self), "adapted");
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gtk_widget_add_css_class (GTK_WIDGET (self->title_label), "title-2");
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} else {
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gtk_widget_remove_css_class (GTK_WIDGET (self), "adapted");
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gtk_widget_remove_css_class (GTK_WIDGET (self->title_label), "title-2");
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}
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}
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static void
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_player_state_changed_cb (ClapperPlayer *player,
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GParamSpec *pspec G_GNUC_UNUSED, ClapperGtkVideoPlaceholder *self)
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{
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gtk_widget_set_visible (self->box,
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clapper_player_get_state (player) > CLAPPER_PLAYER_STATE_STOPPED);
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}
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GtkWidget *
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clapper_gtk_video_placeholder_new (void)
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{
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return g_object_new (CLAPPER_GTK_TYPE_VIDEO_PLACEHOLDER, NULL);
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}
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static void
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clapper_gtk_video_placeholder_map (GtkWidget *widget)
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{
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ClapperGtkVideoPlaceholder *self = CLAPPER_GTK_VIDEO_PLACEHOLDER_CAST (widget);
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if ((self->player = clapper_gtk_get_player_from_ancestor (widget))) {
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g_signal_connect (self->player, "notify::state",
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G_CALLBACK (_player_state_changed_cb), self);
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_player_state_changed_cb (self->player, NULL, self);
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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_video_placeholder_unmap (GtkWidget *widget)
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{
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ClapperGtkVideoPlaceholder *self = CLAPPER_GTK_VIDEO_PLACEHOLDER_CAST (widget);
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if (self->player) {
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g_signal_handlers_disconnect_by_func (self->player, _player_state_changed_cb, self);
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self->player = NULL;
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}
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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_video_placeholder_init (ClapperGtkVideoPlaceholder *self)
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{
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gtk_widget_init_template (GTK_WIDGET (self));
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gtk_box_set_spacing (GTK_BOX (self->box), NORMAL_SPACING);
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}
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static void
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clapper_gtk_video_placeholder_dispose (GObject *object)
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{
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gtk_widget_dispose_template (GTK_WIDGET (object), CLAPPER_GTK_TYPE_VIDEO_PLACEHOLDER);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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clapper_gtk_video_placeholder_class_init (ClapperGtkVideoPlaceholderClass *klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GtkWidgetClass *widget_class = (GtkWidgetClass *) klass;
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "clappergtkvideoplaceholder", 0,
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"Clapper GTK Video Placeholder");
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clapper_gtk_init_translations ();
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gobject_class->dispose = clapper_gtk_video_placeholder_dispose;
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widget_class->map = clapper_gtk_video_placeholder_map;
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widget_class->unmap = clapper_gtk_video_placeholder_unmap;
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gtk_widget_class_set_template_from_resource (widget_class,
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CLAPPER_GTK_RESOURCE_PREFIX "/ui/clapper-gtk-video-placeholder.ui");
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gtk_widget_class_bind_template_child (widget_class, ClapperGtkVideoPlaceholder, box);
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gtk_widget_class_bind_template_child (widget_class, ClapperGtkVideoPlaceholder, title_label);
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gtk_widget_class_bind_template_callback (widget_class, adapt_cb);
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gtk_widget_class_set_css_name (widget_class, "clapper-gtk-video-placeholder");
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}
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