drop-overlay: Introduce GcalDropOverlay
A new widget to perform drag and drop operations, for example, dropping ICS files to the GcalWindow. It allows to overlay a child for visual feedback when a DnD operation is done. either in the main window or in the import dialog, depending on whether none could be imported, or just some of them. It is based on Loupe's DragOverlay widget. Closes #1257
This commit is contained in:
Diego Iván
committed by
Georges Basile Stavracas Neto
Georges Basile Stavracas Neto
parent
75ad1425e7
commit
dfc5a9b970
@@ -0,0 +1,184 @@
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/* gcal-drop-overlay.c
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*
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* Copyright 2024 Diego Iván <diegoivan.mae@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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// A drop overlay widget, based on Loupe's LpDragOverlay
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// https://gitlab.gnome.org/GNOME/loupe/-/blob/692997ff0ee10ea187469c9da328010e1733dd6f/src/widgets/drag_overlay.rs
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#define G_LOG_DOMAIN "GcalDropOverlay"
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#include "gcal-debug.h"
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#include "gcal-drop-overlay.h"
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struct _GcalDropOverlay
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{
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AdwBin parent;
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GtkOverlay *overlay;
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GtkRevealer *revealer;
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GtkDropTarget *drop_target;
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};
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static void on_current_drop_notify_cb (GcalDropOverlay *self);
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G_DEFINE_TYPE (GcalDropOverlay, gcal_drop_overlay, ADW_TYPE_BIN)
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enum
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{
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PROP_0,
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PROP_CHILD,
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PROP_OVERLAYED,
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N_PROPS
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};
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static GParamSpec *properties[N_PROPS] = { NULL, };
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static void
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on_current_drop_notify_cb (GcalDropOverlay *self)
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{
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GdkDrop *current_drop;
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GCAL_ENTRY;
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current_drop = gtk_drop_target_get_current_drop (self->drop_target);
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if (current_drop != NULL)
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{
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gtk_revealer_set_reveal_child (self->revealer, TRUE);
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gtk_widget_add_css_class (gtk_overlay_get_child (self->overlay), "blurred");
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}
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else
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{
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gtk_revealer_set_reveal_child (self->revealer, FALSE);
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gtk_widget_remove_css_class (gtk_overlay_get_child (self->overlay), "blurred");
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}
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gtk_revealer_set_reveal_child (self->revealer, current_drop != NULL);
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GCAL_EXIT;
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}
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static void
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gcal_drop_overlay_dispose (GObject *object)
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{
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GcalDropOverlay *self = GCAL_DROP_OVERLAY (object);
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g_clear_object (&self->drop_target);
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G_OBJECT_CLASS (gcal_drop_overlay_parent_class)->dispose (object);
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}
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static void
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gcal_drop_overlay_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GcalDropOverlay *self = GCAL_DROP_OVERLAY (object);
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switch (prop_id)
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{
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case PROP_CHILD:
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g_value_set_object (value, gtk_overlay_get_child (self->overlay));
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break;
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case PROP_OVERLAYED:
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g_value_set_object (value, gtk_revealer_get_child (self->revealer));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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gcal_drop_overlay_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GcalDropOverlay *self = GCAL_DROP_OVERLAY (object);
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switch (prop_id)
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{
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case PROP_CHILD:
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gtk_overlay_set_child (self->overlay, g_value_get_object (value));
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break;
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case PROP_OVERLAYED:
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gtk_revealer_set_child (self->revealer, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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gcal_drop_overlay_class_init (GcalDropOverlayClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->dispose = gcal_drop_overlay_dispose;
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object_class->get_property = gcal_drop_overlay_get_property;
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object_class->set_property = gcal_drop_overlay_set_property;
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properties[PROP_CHILD] = g_param_spec_object ("child", NULL, NULL,
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GTK_TYPE_WIDGET,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
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properties[PROP_OVERLAYED] = g_param_spec_object ("overlayed", NULL, NULL,
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GTK_TYPE_WIDGET,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (object_class, N_PROPS, properties);
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}
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static void
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gcal_drop_overlay_init (GcalDropOverlay *self)
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{
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self->overlay = GTK_OVERLAY (gtk_overlay_new ());
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self->revealer = GTK_REVEALER (gtk_revealer_new ());
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gtk_overlay_add_overlay (self->overlay, GTK_WIDGET (self->revealer));
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gtk_widget_set_can_target (GTK_WIDGET (self->revealer), FALSE);
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gtk_revealer_set_transition_type (self->revealer, GTK_REVEALER_TRANSITION_TYPE_CROSSFADE);
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gtk_revealer_set_reveal_child (self->revealer, FALSE);
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adw_bin_set_child (ADW_BIN (self), GTK_WIDGET (self->overlay));
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}
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void
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gcal_drop_overlay_set_drop_target (GcalDropOverlay *self,
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GtkDropTarget *drop_target)
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{
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GCAL_ENTRY;
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g_return_if_fail (GCAL_IS_DROP_OVERLAY (self));
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g_return_if_fail (GTK_IS_DROP_TARGET (drop_target));
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g_set_object (&self->drop_target, drop_target);
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g_signal_connect_object (self->drop_target,
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"notify::current-drop",
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G_CALLBACK (on_current_drop_notify_cb),
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self,
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G_CONNECT_SWAPPED);
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GCAL_EXIT;
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}
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