From b59cb63774b9d56b2bbaaa2d43ffea2c87eb1234 Mon Sep 17 00:00:00 2001
From: Orangerot <purple@orangerot.dev>
Date: Sat, 8 Apr 2023 14:09:15 +0200
Subject: [PATCH 1/2] listen for drops and move files to desktop directory

---
 dicons.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/dicons.c b/dicons.c
index dd5b096..d3611b6 100644
--- a/dicons.c
+++ b/dicons.c
@@ -11,6 +11,11 @@ enum
     NUM_COLS
 };
 
+static GtkTargetEntry targets[] =
+{
+    { "text/uri-list", 0, 0 }
+};
+
 GtkIconTheme *theme;
 
 void remove_row_by_file(GtkListStore *store, GFile *file)
@@ -72,6 +77,35 @@ static void file_changed_cb(GFileMonitor *monitor, GFile *file, GFile *other_fil
     }
 }
 
+static gboolean on_drag_motion(GtkWidget *widget, GdkDragContext *context,
+                               gint x, gint y, guint time, gpointer user_data)
+{
+    return TRUE;
+}
+
+static void drop_data_cb(GtkWidget* self, GdkDragContext* context, gint x, gint y, GtkSelectionData* data, guint info, guint time, gpointer user_data)
+{
+    const gchar *desktop_path;
+    gchar **uris;
+    GFile *file, *dir_file;
+    GFileInfo *file_info;
+
+    desktop_path = g_get_user_special_dir(G_USER_DIRECTORY_DESKTOP);
+    dir_file = g_file_new_for_path(desktop_path);
+    printf("test\n");
+
+    uris = gtk_selection_data_get_uris(data);
+    for (gchar **uri = uris; *uri != 0; uri++)
+    {
+        printf("dropped %s\n", *uri);
+        file = g_file_new_for_uri(*uri);
+        file_info = g_file_query_info(file, "standard::*,owner:.user", 0, 0, 0);
+        
+        g_file_copy(file, g_file_get_child(dir_file, g_file_info_get_name(file_info)), G_FILE_COPY_NONE, 0, 0, 0, 0);
+    }
+    gtk_drag_finish(context, TRUE, FALSE, time);
+}
+
 static GtkListStore *create_desktop_list(void)
 {
     GtkTreeIter iter;
@@ -154,7 +188,11 @@ static void activate (GtkApplication* app, gpointer user_data)
     gtk_icon_view_set_text_column(GTK_ICON_VIEW (icon_view), COL_DISPLAY_NAME);
     gtk_icon_view_set_pixbuf_column(GTK_ICON_VIEW (icon_view), COL_PIXBUF);
 
+    gtk_drag_dest_set(icon_view, GTK_DEST_DEFAULT_ALL, targets, G_N_ELEMENTS(targets), GDK_ACTION_COPY);
+
     g_signal_connect(icon_view, "item-activated", G_CALLBACK(activate_cb), model);
+    g_signal_connect(icon_view, "drag-data-received", G_CALLBACK(drop_data_cb), model);
+    g_signal_connect(icon_view, "drag-motion", G_CALLBACK(on_drag_motion), model);
 
     gtk_container_add(GTK_CONTAINER(window), icon_view);
     gtk_widget_grab_focus (icon_view);

From d59da82993efbea45af8ec29f5764c90987c60e6 Mon Sep 17 00:00:00 2001
From: Orangerot <purple@orangerot.dev>
Date: Wed, 12 Apr 2023 19:49:40 +0200
Subject: [PATCH 2/2] drag files to other application

---
 dicons.c | 35 ++++++++++++++++++++++++++++-------
 1 file changed, 28 insertions(+), 7 deletions(-)

diff --git a/dicons.c b/dicons.c
index d3611b6..5c4e479 100644
--- a/dicons.c
+++ b/dicons.c
@@ -77,12 +77,6 @@ static void file_changed_cb(GFileMonitor *monitor, GFile *file, GFile *other_fil
     }
 }
 
-static gboolean on_drag_motion(GtkWidget *widget, GdkDragContext *context,
-                               gint x, gint y, guint time, gpointer user_data)
-{
-    return TRUE;
-}
-
 static void drop_data_cb(GtkWidget* self, GdkDragContext* context, gint x, gint y, GtkSelectionData* data, guint info, guint time, gpointer user_data)
 {
     const gchar *desktop_path;
@@ -106,6 +100,26 @@ static void drop_data_cb(GtkWidget* self, GdkDragContext* context, gint x, gint
     gtk_drag_finish(context, TRUE, FALSE, time);
 }
 
+static void drag_data_cb(GtkWidget* widget, GdkDragContext* context, GtkSelectionData* data, guint info, guint time, gpointer user_data)
+{
+    GList *selected_items, *iter;
+    GtkTreeModel *model = GTK_TREE_MODEL(user_data);
+    gchar **uris;
+    int index = 0;
+
+    selected_items = gtk_icon_view_get_selected_items(GTK_ICON_VIEW(widget));
+    uris = g_new(gchar*, g_list_length(selected_items) + 1);
+    for (iter = selected_items; iter != NULL; iter = iter->next) 
+    {
+        GtkTreeIter tree_iter;
+        GFile *file;
+        gtk_tree_model_get_iter(model, &tree_iter, (GtkTreePath *)iter->data);
+        gtk_tree_model_get(model, &tree_iter, COL_FILE, &file, -1);
+        uris[index++] = g_file_get_uri(file);
+    }
+    gtk_selection_data_set_uris(data, uris);
+}
+
 static GtkListStore *create_desktop_list(void)
 {
     GtkTreeIter iter;
@@ -189,10 +203,17 @@ static void activate (GtkApplication* app, gpointer user_data)
     gtk_icon_view_set_pixbuf_column(GTK_ICON_VIEW (icon_view), COL_PIXBUF);
 
     gtk_drag_dest_set(icon_view, GTK_DEST_DEFAULT_ALL, targets, G_N_ELEMENTS(targets), GDK_ACTION_COPY);
+    gtk_icon_view_enable_model_drag_source (
+            GTK_ICON_VIEW(icon_view),
+            GDK_BUTTON1_MASK,
+            targets,
+            G_N_ELEMENTS(targets),
+            GDK_ACTION_COPY
+            );
 
     g_signal_connect(icon_view, "item-activated", G_CALLBACK(activate_cb), model);
     g_signal_connect(icon_view, "drag-data-received", G_CALLBACK(drop_data_cb), model);
-    g_signal_connect(icon_view, "drag-motion", G_CALLBACK(on_drag_motion), model);
+    g_signal_connect(icon_view, "drag-data-get", G_CALLBACK(drag_data_cb), model);
 
     gtk_container_add(GTK_CONTAINER(window), icon_view);
     gtk_widget_grab_focus (icon_view);