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authorBST 1998 Tony Gale <gale@gtk.org>1998-07-27 08:21:40 +0000
committerTony Gale <gale@src.gnome.org>1998-07-27 08:21:40 +0000
commit88645348922d022ad92b0675f57ec17c19650726 (patch)
tree5ed3e703e7fd3c186d899ebc12cf186ef3e7964b /examples
parent718259dcc2dafecff3729f7bf9b55ab2033a9612 (diff)
downloadgdk-pixbuf-88645348922d022ad92b0675f57ec17c19650726.tar.gz
GtkTree section from David Huggins-Daines <bn711@freenet.carleton.ca>, add
Mon Jul 27 09:18:13 BST 1998 Tony Gale <gale@gtk.org> * docs/gtk_tut.sgml: GtkTree section from David Huggins-Daines <bn711@freenet.carleton.ca>, add a GtkText widget example * examples/text/* example/tree/* : new examples for the GtkTree and GtkText widgets
Diffstat (limited to 'examples')
-rw-r--r--examples/text/Makefile8
-rw-r--r--examples/text/text.c181
-rw-r--r--examples/tree/Makefile8
-rw-r--r--examples/tree/tree.c178
4 files changed, 375 insertions, 0 deletions
diff --git a/examples/text/Makefile b/examples/text/Makefile
new file mode 100644
index 000000000..b1e501a48
--- /dev/null
+++ b/examples/text/Makefile
@@ -0,0 +1,8 @@
+
+CC = gcc
+
+text: text.c
+ $(CC) `gtk-config --cflags` `gtk-config --libs` text.c -o text
+
+clean:
+ rm -f *.o text
diff --git a/examples/text/text.c b/examples/text/text.c
new file mode 100644
index 000000000..b6a021018
--- /dev/null
+++ b/examples/text/text.c
@@ -0,0 +1,181 @@
+/* example-start text text.c */
+
+/* text.c */
+
+#include <stdio.h>
+#include <gtk/gtk.h>
+
+void text_toggle_editable (GtkWidget *checkbutton,
+ GtkWidget *text)
+{
+ gtk_text_set_editable(GTK_TEXT(text),
+ GTK_TOGGLE_BUTTON(checkbutton)->active);
+}
+
+void text_toggle_word_wrap (GtkWidget *checkbutton,
+ GtkWidget *text)
+{
+ gtk_text_set_word_wrap(GTK_TEXT(text),
+ GTK_TOGGLE_BUTTON(checkbutton)->active);
+}
+
+void close_application( GtkWidget *widget, gpointer data )
+{
+ gtk_main_quit();
+}
+
+int main (int argc, char *argv[])
+{
+ GtkWidget *window;
+ GtkWidget *box1;
+ GtkWidget *box2;
+ GtkWidget *hbox;
+ GtkWidget *button;
+ GtkWidget *check;
+ GtkWidget *separator;
+ GtkWidget *table;
+ GtkWidget *vscrollbar;
+ GtkWidget *text;
+ GdkColormap *cmap;
+ GdkColor colour;
+ GdkFont *fixed_font;
+
+ FILE *infile;
+
+ gtk_init (&argc, &argv);
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_widget_set_usize (window, 600, 500);
+ gtk_window_set_policy (GTK_WINDOW(window), TRUE, TRUE, FALSE);
+ gtk_signal_connect (GTK_OBJECT (window), "destroy",
+ GTK_SIGNAL_FUNC(close_application),
+ NULL);
+ gtk_window_set_title (GTK_WINDOW (window), "Text Widget Example");
+ gtk_container_border_width (GTK_CONTAINER (window), 0);
+
+
+ box1 = gtk_vbox_new (FALSE, 0);
+ gtk_container_add (GTK_CONTAINER (window), box1);
+ gtk_widget_show (box1);
+
+
+ box2 = gtk_vbox_new (FALSE, 10);
+ gtk_container_border_width (GTK_CONTAINER (box2), 10);
+ gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
+ gtk_widget_show (box2);
+
+
+ table = gtk_table_new (2, 2, FALSE);
+ gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
+ gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
+ gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
+ gtk_widget_show (table);
+
+ /* Create the GtkText widget */
+ text = gtk_text_new (NULL, NULL);
+ gtk_text_set_editable (GTK_TEXT (text), TRUE);
+ gtk_table_attach (GTK_TABLE (table), text, 0, 1, 0, 1,
+ GTK_EXPAND | GTK_SHRINK | GTK_FILL,
+ GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0);
+ gtk_widget_show (text);
+
+ /* Add a vertical scrollbar to the GtkText widget */
+ vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
+ gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
+ GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0);
+ gtk_widget_show (vscrollbar);
+
+ /* Get the system colour map and allocate the colour red */
+ cmap = gdk_colormap_get_system();
+ colour.red = 0xffff;
+ colour.green = 0;
+ colour.blue = 0;
+ if (!gdk_color_alloc(cmap, &colour)) {
+ g_error("couldn't allocate colour");
+ }
+
+ /* Load a fixed font */
+ fixed_font = gdk_font_load ("-misc-fixed-medium-r-*-*-*-140-*-*-*-*-*-*");
+
+ /* Realizing a widget creates a window for it, ready for us to insert some text */
+ gtk_widget_realize (text);
+
+ /* Freeze the text widget, ready for multiple updates */
+ gtk_text_freeze (GTK_TEXT (text));
+
+ /* Insert some coloured text */
+ gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
+ "Supports ", -1);
+ gtk_text_insert (GTK_TEXT (text), NULL, &colour, NULL,
+ "colored ", -1);
+ gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
+ "text and different ", -1);
+ gtk_text_insert (GTK_TEXT (text), fixed_font, &text->style->black, NULL,
+ "fonts\n\n", -1);
+
+ /* Load the file text.c into the text window */
+
+ infile = fopen("text.c", "r");
+
+ if (infile) {
+ char buffer[1024];
+ int nchars;
+
+ while (1)
+ {
+ nchars = fread(buffer, 1, 1024, infile);
+ gtk_text_insert (GTK_TEXT (text), fixed_font, NULL,
+ NULL, buffer, nchars);
+
+ if (nchars < 1024)
+ break;
+ }
+
+ fclose (infile);
+ }
+
+ /* Thaw the text widget, allowing the updates to become visible */
+ gtk_text_thaw (GTK_TEXT (text));
+
+ hbox = gtk_hbutton_box_new ();
+ gtk_box_pack_start (GTK_BOX (box2), hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+
+ check = gtk_check_button_new_with_label("Editable");
+ gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, FALSE, 0);
+ gtk_signal_connect (GTK_OBJECT(check), "toggled",
+ GTK_SIGNAL_FUNC(text_toggle_editable), text);
+ gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(check), TRUE);
+ gtk_widget_show (check);
+ check = gtk_check_button_new_with_label("Wrap Words");
+ gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, TRUE, 0);
+ gtk_signal_connect (GTK_OBJECT(check), "toggled",
+ GTK_SIGNAL_FUNC(text_toggle_word_wrap), text);
+ gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(check), FALSE);
+ gtk_widget_show (check);
+
+ separator = gtk_hseparator_new ();
+ gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
+ gtk_widget_show (separator);
+
+ box2 = gtk_vbox_new (FALSE, 10);
+ gtk_container_border_width (GTK_CONTAINER (box2), 10);
+ gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
+ gtk_widget_show (box2);
+
+ button = gtk_button_new_with_label ("close");
+ gtk_signal_connect (GTK_OBJECT (button), "clicked",
+ GTK_SIGNAL_FUNC(close_application),
+ NULL);
+ gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
+ GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
+ gtk_widget_grab_default (button);
+ gtk_widget_show (button);
+
+ gtk_widget_show (window);
+
+ gtk_main ();
+
+ return 0;
+}
+/* example-end */
diff --git a/examples/tree/Makefile b/examples/tree/Makefile
new file mode 100644
index 000000000..4f9c70a02
--- /dev/null
+++ b/examples/tree/Makefile
@@ -0,0 +1,8 @@
+
+CC = gcc
+
+tree: tree.c
+ $(CC) `gtk-config --cflags` `gtk-config --libs` tree.c -o tree
+
+clean:
+ rm -f *.o tree
diff --git a/examples/tree/tree.c b/examples/tree/tree.c
new file mode 100644
index 000000000..3b19f8db3
--- /dev/null
+++ b/examples/tree/tree.c
@@ -0,0 +1,178 @@
+/* example-start tree tree.c */
+
+#include <gtk/gtk.h>
+
+/* for all the GtkItem:: and GtkTreeItem:: signals */
+static void cb_itemsignal (GtkWidget *item, gchar *signame)
+{
+ gchar *name;
+ GtkLabel *label;
+
+ /* It's a GtkBin, so it has one child, which we know to be a
+ label, so get that */
+ label = GTK_LABEL (GTK_BIN (item)->child);
+ /* Get the text of the label */
+ gtk_label_get (label, &name);
+ /* Get the level of the tree which the item is in */
+ g_print ("%s called for item %s->%p, level %d\n", signame, name,
+ item, GTK_TREE (item->parent)->level);
+}
+
+/* Note that this is never called */
+static void cb_unselect_child (GtkWidget *root_tree, GtkWidget *child,
+ GtkWidget *subtree)
+{
+ g_print ("unselect_child called for root tree %p, subtree %p, child %p\n",
+ root_tree, subtree, child);
+}
+
+/* Note that this is called every time the user clicks on an item,
+ whether it is already selected or not. */
+static void cb_select_child (GtkWidget *root_tree, GtkWidget *child,
+ GtkWidget *subtree)
+{
+ g_print ("select_child called for root tree %p, subtree %p, child %p\n",
+ root_tree, subtree, child);
+}
+
+static void cb_selection_changed (GtkWidget *tree)
+{
+ GList *i;
+
+ g_print ("selection_change called for tree %p\n", tree);
+ g_print ("selected objects are:\n");
+
+ i = GTK_TREE_SELECTION(tree);
+ while (i){
+ gchar *name;
+ GtkLabel *label;
+ GtkWidget *item;
+
+ /* Get a GtkWidget pointer from the list node */
+ item = GTK_WIDGET (i->data);
+ label = GTK_LABEL (GTK_BIN (item)->child);
+ gtk_label_get (label, &name);
+ g_print ("\t%s on level %d\n", name, GTK_TREE
+ (item->parent)->level);
+ i = i->next;
+ }
+}
+
+int main (int argc, char *argv[])
+{
+ GtkWidget *window, *scrolled_win, *tree;
+ static gchar *itemnames[] = {"Foo", "Bar", "Baz", "Quux",
+ "Maurice"};
+ gint i;
+
+ gtk_init (&argc, &argv);
+
+ /* a generic toplevel window */
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_signal_connect (GTK_OBJECT(window), "delete_event",
+ GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
+ gtk_container_border_width (GTK_CONTAINER(window), 5);
+
+ /* A generic scrolled window */
+ scrolled_win = gtk_scrolled_window_new (NULL, NULL);
+ gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
+ GTK_POLICY_AUTOMATIC,
+ GTK_POLICY_AUTOMATIC);
+ gtk_widget_set_usize (scrolled_win, 150, 200);
+ gtk_container_add (GTK_CONTAINER(window), scrolled_win);
+ gtk_widget_show (scrolled_win);
+
+ /* Create the root tree */
+ tree = gtk_tree_new();
+ g_print ("root tree is %p\n", tree);
+ /* connect all GtkTree:: signals */
+ gtk_signal_connect (GTK_OBJECT(tree), "select_child",
+ GTK_SIGNAL_FUNC(cb_select_child), tree);
+ gtk_signal_connect (GTK_OBJECT(tree), "unselect_child",
+ GTK_SIGNAL_FUNC(cb_unselect_child), tree);
+ gtk_signal_connect (GTK_OBJECT(tree), "selection_changed",
+ GTK_SIGNAL_FUNC(cb_selection_changed), tree);
+ /* Add it to the scrolled window */
+ gtk_container_add (GTK_CONTAINER(scrolled_win), tree);
+ /* Set the selection mode */
+ gtk_tree_set_selection_mode (GTK_TREE(tree),
+ GTK_SELECTION_MULTIPLE);
+ /* Show it */
+ gtk_widget_show (tree);
+
+ for (i = 0; i < 5; i++){
+ GtkWidget *subtree, *item;
+ gint j;
+
+ /* Create a tree item */
+ item = gtk_tree_item_new_with_label (itemnames[i]);
+ /* Connect all GtkItem:: and GtkTreeItem:: signals */
+ gtk_signal_connect (GTK_OBJECT(item), "select",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "select");
+ gtk_signal_connect (GTK_OBJECT(item), "deselect",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "deselect");
+ gtk_signal_connect (GTK_OBJECT(item), "toggle",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "toggle");
+ gtk_signal_connect (GTK_OBJECT(item), "expand",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "expand");
+ gtk_signal_connect (GTK_OBJECT(item), "collapse",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "collapse");
+ /* Add it to the parent tree */
+ gtk_tree_append (GTK_TREE(tree), item);
+ /* Show it - this can be done at any time */
+ gtk_widget_show (item);
+ /* Create this item's subtree */
+ subtree = gtk_tree_new();
+ g_print ("-> item %s->%p, subtree %p\n", itemnames[i], item,
+ subtree);
+
+ /* This is still necesary if you want these signals to be called
+ for the subtree's children. Note that selection_change will be
+ signalled for the root tree regardless. */
+ gtk_signal_connect (GTK_OBJECT(subtree), "select_child",
+ GTK_SIGNAL_FUNC(cb_select_child), subtree);
+ gtk_signal_connect (GTK_OBJECT(subtree), "unselect_child",
+ GTK_SIGNAL_FUNC(cb_unselect_child), subtree);
+ /* This has absolutely no effect, because it is completely ignored
+ in subtrees */
+ gtk_tree_set_selection_mode (GTK_TREE(subtree),
+ GTK_SELECTION_SINGLE);
+ /* Neither does this, but for a rather different reason - the
+ view_mode and view_line values of a tree are propagated to
+ subtrees when they are mapped. So, setting it later on would
+ actually have a (somewhat unpredictable) effect */
+ gtk_tree_set_view_mode (GTK_TREE(subtree), GTK_TREE_VIEW_ITEM);
+ /* Set this item's subtree - note that you cannot do this until
+ AFTER the item has been added to its parent tree! */
+ gtk_tree_item_set_subtree (GTK_TREE_ITEM(item), subtree);
+
+ for (j = 0; j < 5; j++){
+ GtkWidget *subitem;
+
+ /* Create a subtree item, in much the same way */
+ subitem = gtk_tree_item_new_with_label (itemnames[j]);
+ /* Connect all GtkItem:: and GtkTreeItem:: signals */
+ gtk_signal_connect (GTK_OBJECT(subitem), "select",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "select");
+ gtk_signal_connect (GTK_OBJECT(subitem), "deselect",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "deselect");
+ gtk_signal_connect (GTK_OBJECT(subitem), "toggle",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "toggle");
+ gtk_signal_connect (GTK_OBJECT(subitem), "expand",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "expand");
+ gtk_signal_connect (GTK_OBJECT(subitem), "collapse",
+ GTK_SIGNAL_FUNC(cb_itemsignal), "collapse");
+ g_print ("-> -> item %s->%p\n", itemnames[j], subitem);
+ /* Add it to its parent tree */
+ gtk_tree_append (GTK_TREE(subtree), subitem);
+ /* Show it */
+ gtk_widget_show (subitem);
+ }
+ }
+
+ /* Show the window and loop endlessly */
+ gtk_widget_show (window);
+ gtk_main();
+ return 0;
+}
+/* example-end */