forked from AuroraMiddleware/gtk
217 lines
6.6 KiB
C
217 lines
6.6 KiB
C
/* Assistant
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*
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* Demonstrates a sample multistep assistant. Assistants are used to divide
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* an operation into several simpler sequential steps, and to guide the user
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* through these steps.
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*/
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#include <gtk/gtk.h>
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#include "demo-common.h"
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static GtkWidget *assistant = NULL;
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static GtkWidget *progress_bar = NULL;
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static gboolean
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apply_changes_gradually (gpointer data)
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{
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gdouble fraction;
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/* Work, work, work... */
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fraction = gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR (progress_bar));
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fraction += 0.05;
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if (fraction < 1.0)
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{
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gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), fraction);
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return TRUE;
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}
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else
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{
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/* Close automatically once changes are fully applied. */
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gtk_widget_destroy (assistant);
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return FALSE;
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}
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}
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static void
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on_assistant_apply (GtkWidget *widget, gpointer data)
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{
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/* Start a timer to simulate changes taking a few seconds to apply. */
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g_timeout_add (100, apply_changes_gradually, NULL);
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}
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static void
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on_assistant_close_cancel (GtkWidget *widget, gpointer data)
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{
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GtkWidget **assistant = (GtkWidget **) data;
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gtk_widget_destroy (*assistant);
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*assistant = NULL;
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}
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static void
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on_assistant_prepare (GtkWidget *widget, GtkWidget *page, gpointer data)
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{
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gint current_page, n_pages;
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gchar *title;
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current_page = gtk_assistant_get_current_page (GTK_ASSISTANT (widget));
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n_pages = gtk_assistant_get_n_pages (GTK_ASSISTANT (widget));
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title = g_strdup_printf ("Sample assistant (%d of %d)", current_page + 1, n_pages);
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gtk_window_set_title (GTK_WINDOW (widget), title);
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g_free (title);
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/* The fourth page (counting from zero) is the progress page. The
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* user clicked Apply to get here so we tell the assistant to commit,
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* which means the changes up to this point are permanent and cannot
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* be cancelled or revisited. */
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if (current_page == 3)
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gtk_assistant_commit (GTK_ASSISTANT (widget));
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}
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static void
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on_entry_changed (GtkWidget *widget, gpointer data)
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{
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GtkAssistant *assistant = GTK_ASSISTANT (data);
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GtkWidget *current_page;
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gint page_number;
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const gchar *text;
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page_number = gtk_assistant_get_current_page (assistant);
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current_page = gtk_assistant_get_nth_page (assistant, page_number);
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text = gtk_entry_get_text (GTK_ENTRY (widget));
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if (text && *text)
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gtk_assistant_set_page_complete (assistant, current_page, TRUE);
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else
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gtk_assistant_set_page_complete (assistant, current_page, FALSE);
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}
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static void
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create_page1 (GtkWidget *assistant)
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{
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GtkWidget *box, *label, *entry;
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GdkPixbuf *pixbuf;
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box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
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gtk_container_set_border_width (GTK_CONTAINER (box), 12);
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label = gtk_label_new ("You must fill out this entry to continue:");
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gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
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entry = gtk_entry_new ();
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gtk_box_pack_start (GTK_BOX (box), entry, TRUE, TRUE, 0);
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g_signal_connect (G_OBJECT (entry), "changed",
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G_CALLBACK (on_entry_changed), assistant);
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gtk_widget_show_all (box);
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gtk_assistant_append_page (GTK_ASSISTANT (assistant), box);
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gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), box, "Page 1");
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gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), box, GTK_ASSISTANT_PAGE_INTRO);
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pixbuf = gtk_widget_render_icon (assistant, GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_DIALOG, NULL);
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gtk_assistant_set_page_header_image (GTK_ASSISTANT (assistant), box, pixbuf);
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g_object_unref (pixbuf);
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}
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static void
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create_page2 (GtkWidget *assistant)
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{
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GtkWidget *box, *checkbutton;
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GdkPixbuf *pixbuf;
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
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gtk_container_set_border_width (GTK_CONTAINER (box), 12);
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checkbutton = gtk_check_button_new_with_label ("This is optional data, you may continue "
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"even if you do not check this");
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gtk_box_pack_start (GTK_BOX (box), checkbutton, FALSE, FALSE, 0);
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gtk_widget_show_all (box);
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gtk_assistant_append_page (GTK_ASSISTANT (assistant), box);
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gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), box, TRUE);
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gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), box, "Page 2");
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pixbuf = gtk_widget_render_icon (assistant, GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_DIALOG, NULL);
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gtk_assistant_set_page_header_image (GTK_ASSISTANT (assistant), box, pixbuf);
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g_object_unref (pixbuf);
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}
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static void
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create_page3 (GtkWidget *assistant)
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{
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GtkWidget *label;
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GdkPixbuf *pixbuf;
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label = gtk_label_new ("This is a confirmation page, press 'Apply' to apply changes");
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gtk_widget_show (label);
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gtk_assistant_append_page (GTK_ASSISTANT (assistant), label);
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gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), label, GTK_ASSISTANT_PAGE_CONFIRM);
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gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), label, TRUE);
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gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), label, "Confirmation");
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pixbuf = gtk_widget_render_icon (assistant, GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_DIALOG, NULL);
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gtk_assistant_set_page_header_image (GTK_ASSISTANT (assistant), label, pixbuf);
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g_object_unref (pixbuf);
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}
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static void
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create_page4 (GtkWidget *assistant)
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{
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GtkWidget *page;
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page = gtk_alignment_new (0.5, 0.5, 0.5, 0.0);
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progress_bar = gtk_progress_bar_new ();
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gtk_container_add (GTK_CONTAINER (page), progress_bar);
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gtk_widget_show_all (page);
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gtk_assistant_append_page (GTK_ASSISTANT (assistant), page);
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gtk_assistant_set_page_type (GTK_ASSISTANT (assistant), page, GTK_ASSISTANT_PAGE_PROGRESS);
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gtk_assistant_set_page_title (GTK_ASSISTANT (assistant), page, "Applying changes");
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/* This prevents the assistant window from being
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* closed while we're "busy" applying changes. */
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gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant), page, FALSE);
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}
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GtkWidget*
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do_assistant (GtkWidget *do_widget)
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{
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if (!assistant)
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{
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assistant = gtk_assistant_new ();
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gtk_window_set_default_size (GTK_WINDOW (assistant), -1, 300);
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gtk_window_set_screen (GTK_WINDOW (assistant),
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gtk_widget_get_screen (do_widget));
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create_page1 (assistant);
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create_page2 (assistant);
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create_page3 (assistant);
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create_page4 (assistant);
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g_signal_connect (G_OBJECT (assistant), "cancel",
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G_CALLBACK (on_assistant_close_cancel), &assistant);
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g_signal_connect (G_OBJECT (assistant), "close",
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G_CALLBACK (on_assistant_close_cancel), &assistant);
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g_signal_connect (G_OBJECT (assistant), "apply",
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G_CALLBACK (on_assistant_apply), NULL);
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g_signal_connect (G_OBJECT (assistant), "prepare",
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G_CALLBACK (on_assistant_prepare), NULL);
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}
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if (!gtk_widget_get_visible (assistant))
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gtk_widget_show (assistant);
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else
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{
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gtk_widget_destroy (assistant);
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assistant = NULL;
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}
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return assistant;
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}
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