From: Maksym Veremeyenko <verem@m1stereo.tv>
Date: Tue, 3 Jul 2012 15:28:15 +0000 (+0300)
Subject: minimal library drag support elements
X-Git-Url: http://research.m1stereo.tv/gitweb?a=commitdiff_plain;h=07c6d84a23c9043e2334987fc8533f68e5e23183;p=melted_gui

minimal library drag support elements
---

diff --git a/src/instance.c b/src/instance.c
index 1ae08c3..05400b3 100644
--- a/src/instance.c
+++ b/src/instance.c
@@ -39,6 +39,8 @@
 #include "player.h"
 #include "library.h"
 
+GtkTargetEntry drag_targets[] = { { (char*) "application/playlist_item_t", 0, 0 } };
+
 gboolean instance_button_click(instance_t* app, control_buttons_t button)
 {
 #if 0
diff --git a/src/library.c b/src/library.c
index 5915ed5..19e4637 100644
--- a/src/library.c
+++ b/src/library.c
@@ -36,11 +36,13 @@
 #include <mvcp/mvcp.h>
 #include <mvcp/mvcp_remote.h>
 
-#include "instance.h"
+#include "library.h"
 #include "ui.h"
 #include "timecode.h"
 #include "support.h"
 
+extern GtkTargetEntry drag_targets[];
+
 void library_release(instance_t* app)
 {
     mvcp_close(app->library.handle[0]);
@@ -233,6 +235,33 @@ static void on_library_row_collapsed
     library_add_fake(user_data, GTK_TREE_STORE(model), iter);
 };
 
+static void library_drag_data_get_cb(GtkWidget *widget, GdkDragContext *context,
+    GtkSelectionData *selection_data, guint info, guint time, gpointer userdata)
+{
+    int c;
+    playlist_item_t* items;
+    instance_t* app = (instance_t*)userdata;
+
+    g_warning("library_drag_data_get_cb");
+
+    items = library_get_selected_items(app, &c);
+
+    /* clear item */
+    if(items)
+    {
+        gtk_selection_data_set(selection_data, selection_data->target, 8,
+            (const guchar *)items, sizeof(playlist_item_t) * c);
+        free(items);
+    };
+};
+
+static void library_drag_begin_cb(GtkWidget *widget, GdkDragContext *context, gpointer userdata)
+{
+    g_warning("library_drag_begin_cb");
+    gtk_drag_source_set_icon_stock(widget, GTK_STOCK_DND);
+};
+
+
 void library_init(instance_t* app)
 {
     /* connect to library */
@@ -251,29 +280,98 @@ void library_init(instance_t* app)
     /* load lib */
     library_init_load(app);
 
+    /* allow drag source */
+    gtk_drag_source_set(app->library_tree, GDK_BUTTON1_MASK,
+        drag_targets, 1, (GdkDragAction)(GDK_ACTION_COPY));
+
     /* set handlers */
     gtk_signal_connect(GTK_OBJECT(app->library_tree), "row-expanded",
         GTK_SIGNAL_FUNC(on_library_row_expanded), app);
     gtk_signal_connect(GTK_OBJECT(app->library_tree), "row-collapsed",
         GTK_SIGNAL_FUNC(on_library_row_collapsed), app);
+    g_signal_connect(GTK_OBJECT(app->library_tree), "drag_data_get",
+        G_CALLBACK(library_drag_data_get_cb), app);
+    g_signal_connect(GTK_OBJECT(app->library_tree), "drag_begin",
+        G_CALLBACK(library_drag_begin_cb), app);
 
-#if 0
-    pthread_mutex_lock(&app->library.lock);
+};
 
-    if(app->library.filename[0])
+static void library_get_selected_items_iter
+(
+    GtkTreeModel *model,
+    GtkTreePath *path,
+    GtkTreeIter *iter,
+    gpointer data
+)
+{
+    int l;
+    mvcp_dir_entry_t *dir;
+    mvcp_list_entry_t *list;
+    playlist_item_t** pitems = (playlist_item_t**)data;
+    playlist_item_t* items = *pitems;
+
+    /* request pointers to list and dir entries of library items */
+    gtk_tree_model_get(model, iter,
+        3, &dir,
+        4, &list,
+        -1);
+
+    /* check if defined */
+    if(dir && list)
     {
-        app->library.count = MAX_LIBRARY_ITEMS;
-        omnplay_library_load_file(app->library.item, &app->library.count, app->library.filename);
+        /* allocate items */
+        if(!items)
+        {
+            items = (playlist_item_t*)malloc(sizeof(playlist_item_t));
+            memset(items, 0, sizeof(playlist_item_t));
+        };
+
+        /* find numbers of items in list */
+        for(l = 0; items[l].id[0]; l++); l--;
+        g_warning("library_get_selected_items_iter: l=%d", l);
+
+        /* realloc items */
+        items = (playlist_item_t*)realloc(items, (l + 2) * sizeof(playlist_item_t));
+
+        /* clean last item */
+        memset(&items[l + 1], 0, sizeof(playlist_item_t));
+
+        /* setup items */
+        memset(&items[l + 0], 0, sizeof(playlist_item_t));
+        strncpy(items[l].id, dir->name, PATH_MAX);
+        strncpy(items[l].title, dir->full, PATH_MAX);
+        items[l].dur = list->size;
     };
 
-    omnplay_library_sort(app);
+    *pitems = items;
+};
 
-    pthread_mutex_unlock(&app->library.lock);
+playlist_item_t* library_get_selected_items(instance_t* app, int *count)
+{
+    int l = 0;
+    playlist_item_t* items = NULL;
 
-    omnplay_library_draw(app);
-#endif
+    GtkTreeSelection *selection;
+
+    selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(app->library_tree));
+    if(selection)
+    {
+        gtk_tree_selection_selected_foreach(
+            selection,
+            library_get_selected_items_iter,
+            &items);
+
+        if(items)
+        {
+            for(; items[l].id[0]; l++); l--;
+        };
+    };
+
+    *count = l;
+    return items;
 };
 
+
 #if 0
 playlist_item_t* omnplay_library_find(omnplay_instance_t* app, char* id)
 {
diff --git a/src/library.h b/src/library.h
index d7e72db..5cd6f91 100644
--- a/src/library.h
+++ b/src/library.h
@@ -29,6 +29,7 @@ extern "C"
 
 void library_init(instance_t* app);
 void library_release(instance_t* app);
+playlist_item_t* library_get_selected_items(instance_t* app, int *count);
 
 #ifdef __cplusplus
 };