forked from AuroraMiddleware/gtk
159 lines
4.2 KiB
C
159 lines
4.2 KiB
C
/* Icon View/Editing and Drag-and-Drop
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*
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* The GtkIconView widget supports Editing and Drag-and-Drop.
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* This example also demonstrates using the generic GtkCellLayout
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* interface to set up cell renderers in an icon view.
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*/
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#include <gtk/gtk.h>
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#include <string.h>
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enum
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{
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COL_TEXT,
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NUM_COLS
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};
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static void
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fill_store (GtkListStore *store)
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{
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GtkTreeIter iter;
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const gchar *text[] = { "Red", "Green", "Blue", "Yellow" };
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gint i;
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/* First clear the store */
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gtk_list_store_clear (store);
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for (i = 0; i < 4; i++)
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{
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter, COL_TEXT, text[i], -1);
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}
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}
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static GtkListStore *
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create_store (void)
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{
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GtkListStore *store;
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store = gtk_list_store_new (NUM_COLS, G_TYPE_STRING);
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return store;
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}
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static void
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set_cell_color (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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gpointer data)
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{
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gchar *text;
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GdkRGBA color;
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guint32 pixel = 0;
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GdkPixbuf *pixbuf;
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gtk_tree_model_get (tree_model, iter, COL_TEXT, &text, -1);
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if (!text)
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return;
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if (gdk_rgba_parse (&color, text))
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pixel =
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((gint)(color.red * 255)) << 24 |
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((gint)(color.green * 255)) << 16 |
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((gint)(color.blue * 255)) << 8 |
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((gint)(color.alpha * 255));
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g_free (text);
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pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
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gdk_pixbuf_fill (pixbuf, pixel);
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g_object_set (cell, "pixbuf", pixbuf, NULL);
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g_object_unref (pixbuf);
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}
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static void
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edited (GtkCellRendererText *cell,
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gchar *path_string,
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gchar *text,
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gpointer data)
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{
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GtkTreeModel *model;
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GtkTreeIter iter;
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GtkTreePath *path;
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model = gtk_icon_view_get_model (GTK_ICON_VIEW (data));
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path = gtk_tree_path_new_from_string (path_string);
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gtk_tree_model_get_iter (model, &iter, path);
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gtk_list_store_set (GTK_LIST_STORE (model), &iter,
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COL_TEXT, text, -1);
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gtk_tree_path_free (path);
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}
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GtkWidget *
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do_iconview_edit (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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if (!window)
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{
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GtkWidget *icon_view;
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GtkListStore *store;
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GtkCellRenderer *renderer;
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window = gtk_window_new ();
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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gtk_window_set_title (GTK_WINDOW (window), "Editing and Drag-and-Drop");
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g_signal_connect (window, "destroy",
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G_CALLBACK (gtk_widget_destroyed), &window);
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store = create_store ();
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fill_store (store);
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icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (store));
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g_object_unref (store);
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gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (icon_view),
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GTK_SELECTION_SINGLE);
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gtk_icon_view_set_item_orientation (GTK_ICON_VIEW (icon_view),
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GTK_ORIENTATION_HORIZONTAL);
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gtk_icon_view_set_columns (GTK_ICON_VIEW (icon_view), 2);
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gtk_icon_view_set_reorderable (GTK_ICON_VIEW (icon_view), TRUE);
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renderer = gtk_cell_renderer_pixbuf_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (icon_view),
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renderer, TRUE);
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gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (icon_view),
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renderer,
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set_cell_color,
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NULL, NULL);
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renderer = gtk_cell_renderer_text_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (icon_view),
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renderer, TRUE);
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g_object_set (renderer, "editable", TRUE, NULL);
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g_signal_connect (renderer, "edited", G_CALLBACK (edited), icon_view);
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gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
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renderer,
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"text", COL_TEXT,
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NULL);
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gtk_container_add (GTK_CONTAINER (window), icon_view);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_widget_destroy (window);
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return window;
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}
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