[gnome-calendar/gbsneto/gtk4: 2/34] event-editor/date-chooser: Port to GTK4

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c7b3de4e90d4da79b9d76268a185607ebdec8fc4
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Jan 10 16:42:11 2022 -0300

    event-editor/date-chooser: Port to GTK4

 src/gui/event-editor/gcal-date-chooser.c  | 68 +++++++++++++------------------
 src/gui/event-editor/gcal-date-chooser.h  |  4 +-
 src/gui/event-editor/gcal-date-chooser.ui | 30 +++++++-------
 3 files changed, 45 insertions(+), 57 deletions(-)
---
diff --git a/src/gui/event-editor/gcal-date-chooser.c b/src/gui/event-editor/gcal-date-chooser.c
index 949a138d..5dc17a8c 100644
--- a/src/gui/event-editor/gcal-date-chooser.c
+++ b/src/gui/event-editor/gcal-date-chooser.c
@@ -30,7 +30,7 @@
 
 struct _GcalDateChooser
 {
-  GtkBin              parent;
+  AdwBin              parent;
 
   GtkWidget          *month_choice;
   GtkWidget          *year_choice;
@@ -57,7 +57,7 @@ struct _GcalDateChooser
   GDestroyNotify      day_options_destroy;
 };
 
-G_DEFINE_TYPE (GcalDateChooser, gcal_date_chooser, GTK_TYPE_BIN)
+G_DEFINE_TYPE (GcalDateChooser, gcal_date_chooser, ADW_TYPE_BIN)
 
 enum
 {
@@ -410,49 +410,38 @@ multi_choice_changed (GcalDateChooser *self)
   gcal_date_chooser_set_date (self, date);
 }
 
-static void
-calendar_drag_data_received (GtkWidget        *widget,
-                             GdkDragContext   *context,
-                             gint              x,
-                             gint              y,
-                             GtkSelectionData *selection_data,
-                             guint             info,
-                             guint             time)
-{
-  GcalDateChooser *self = GCAL_DATE_CHOOSER (widget);
-  gchar *text;
-  GDate *gdate;
+static gboolean
+on_drop_target_drop_cb (GtkDropTarget   *target,
+                        const GValue    *value,
+                        double           x,
+                        double           y,
+                        GcalDateChooser *self)
+{
+  g_autoptr (GDateTime) date = NULL;
+  g_autoptr (GDate) gdate = NULL;
+  const gchar *text;
   gint year, month, day;
-  GDateTime *date;
 
   gdate = g_date_new ();
-  text = (gchar *)gtk_selection_data_get_text (selection_data);
+  text = g_value_get_string (value);
+
   if (text)
-    {
-      g_date_set_parse (gdate, text);
-      g_free (text);
-    }
+    g_date_set_parse (gdate, text);
+
   if (!g_date_valid (gdate))
-    {
-      g_date_free (gdate);
-      gtk_drag_finish (context, FALSE, FALSE, time);
-      return;
-    }
+    return FALSE;
 
   year = g_date_get_year (gdate);
   month = g_date_get_month (gdate);
   day = g_date_get_day (gdate);
 
-  g_date_free (gdate);
-
-  gtk_drag_finish (context, TRUE, FALSE, time);
-
   if (!self->show_heading || self->no_month_change)
     g_date_time_get_ymd (self->date, &year, &month, NULL);
 
   date = g_date_time_new_local (year, month, day, 1, 1, 1);
   gcal_date_chooser_set_date (self, date);
-  g_date_time_unref (date);
+
+  return TRUE;
 }
 
 static void
@@ -483,8 +472,6 @@ gcal_date_chooser_class_init (GcalDateChooserClass *class)
   object_class->set_property = calendar_set_property;
   object_class->get_property = calendar_get_property;
 
-  widget_class->drag_data_received = calendar_drag_data_received;
-
   gtk_widget_class_set_template_from_resource (widget_class, 
"/org/gnome/calendar/ui/event-editor/gcal-date-chooser.ui");
 
   properties[PROP_DATE] = g_param_spec_boxed ("date",
@@ -548,6 +535,7 @@ gcal_date_chooser_class_init (GcalDateChooserClass *class)
 static void
 gcal_date_chooser_init (GcalDateChooser *self)
 {
+  GtkDropTarget *drop_target;
   GtkWidget *label;
   gint row, col;
   gint year, month;
@@ -599,14 +587,14 @@ gcal_date_chooser_init (GcalDateChooser *self)
    */
   self->corner = gtk_stack_new ();
   gtk_grid_attach (GTK_GRID (self->grid), self->corner, -1, -1, 1, 1);
+
   label = gtk_label_new ("");
-  gtk_widget_show (label);
-  gtk_style_context_add_class (gtk_widget_get_style_context (label), "weekday");
-  gtk_container_add (GTK_CONTAINER (self->corner), label);
+  gtk_widget_add_css_class (label, "weekday");
+  gtk_stack_add_named (GTK_STACK (self->corner), label, "weekday");
 
   label = gtk_label_new ("99");
-  gtk_style_context_add_class (gtk_widget_get_style_context (label), "weeknum");
-  gtk_container_add (GTK_CONTAINER (self->corner), label);
+  gtk_widget_add_css_class (label, "weeknum");
+  gtk_stack_add_named (GTK_STACK (self->corner), label, "weeknum");
 
   self->day_grid = g_object_new (GTK_TYPE_GRID,
                                  "valign", GTK_ALIGN_FILL,
@@ -643,8 +631,10 @@ gcal_date_chooser_init (GcalDateChooser *self)
   gcal_multi_choice_set_value (GCAL_MULTI_CHOICE (self->month_choice), month - 1);
   calendar_update_selected_day_display (self);
 
-  gtk_drag_dest_set (GTK_WIDGET (self), GTK_DEST_DEFAULT_ALL, NULL, 0, GDK_ACTION_COPY);
-  gtk_drag_dest_add_text_targets (GTK_WIDGET (self));
+  drop_target = gtk_drop_target_new (G_TYPE_STRING, GDK_ACTION_COPY);
+  gtk_drop_target_set_preload (drop_target, TRUE);
+  g_signal_connect (drop_target, "drop", G_CALLBACK (on_drop_target_drop_cb), NULL);
+  gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (drop_target));
 }
 
 GtkWidget*
diff --git a/src/gui/event-editor/gcal-date-chooser.h b/src/gui/event-editor/gcal-date-chooser.h
index cbbdf1d0..d04f3e91 100644
--- a/src/gui/event-editor/gcal-date-chooser.h
+++ b/src/gui/event-editor/gcal-date-chooser.h
@@ -18,7 +18,7 @@
 #ifndef __GCAL_DATE_CHOOSER_H__
 #define __GCAL_DATE_CHOOSER_H__
 
-#include <gtk/gtk.h>
+#include <adwaita.h>
 
 G_BEGIN_DECLS
 
@@ -32,7 +32,7 @@ typedef enum
 
 #define GCAL_TYPE_DATE_CHOOSER (gcal_date_chooser_get_type ())
 
-G_DECLARE_FINAL_TYPE (GcalDateChooser, gcal_date_chooser, GCAL, DATE_CHOOSER, GtkBin)
+G_DECLARE_FINAL_TYPE (GcalDateChooser, gcal_date_chooser, GCAL, DATE_CHOOSER, AdwBin)
 
 typedef GcalDateChooserDayOptions (*GcalDateChooserDayOptionsCallback) (GcalDateChooser *self,
                                                                         GDateTime       *date,
diff --git a/src/gui/event-editor/gcal-date-chooser.ui b/src/gui/event-editor/gcal-date-chooser.ui
index db203431..15093450 100644
--- a/src/gui/event-editor/gcal-date-chooser.ui
+++ b/src/gui/event-editor/gcal-date-chooser.ui
@@ -1,10 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <requires lib="gtk+" version="3.16"/>
-  <template class="GcalDateChooser" parent="GtkBin">
+  <template class="GcalDateChooser" parent="AdwBin">
     <child>
       <object class="GtkGrid">
-        <property name="visible">True</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GcalMultiChoice" id="month_choice">
@@ -15,11 +14,11 @@
             <property name="animate">False</property>
             <property name="value">0</property>
             <signal name="notify::value" handler="multi_choice_changed" swapped="yes"/>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GcalMultiChoice" id="year_choice">
@@ -30,23 +29,22 @@
             <property name="animate">False</property>
             <property name="value">0</property>
             <signal name="notify::value" handler="multi_choice_changed" swapped="yes"/>
+            <layout>
+              <property name="column">1</property>
+              <property name="row">0</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">1</property>
-            <property name="top-attach">0</property>
-          </packing>
         </child>
         <child>
           <object class="GtkGrid" id="grid">
-            <property name="visible">True</property>
             <property name="row-homogeneous">True</property>
             <property name="column-homogeneous">True</property>
+            <layout>
+              <property name="column">0</property>
+              <property name="column-span">2</property>
+              <property name="row">1</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">1</property>
-            <property name="width">2</property>
-          </packing>
         </child>
       </object>
     </child>