--- /dev/null
+/*
+ * field-button.c
+ * Copyright (C) 2009 Jim Evins <evins@snaught.com>.
+ *
+ * This file is part of gLabels.
+ *
+ * gLabels is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * gLabels is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with gLabels. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include "field-button.h"
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+
+#include "field-button-menu.h"
+#include "marshal.h"
+
+
+
+/*========================================================*/
+/* Private types. */
+/*========================================================*/
+
+/** GL_FIELD_BUTTON Private fields */
+struct _glFieldButtonPrivate {
+
+ gboolean label_is_key;
+ gchar *key;
+
+ GtkWidget *label;
+
+ GtkWidget *menu;
+};
+
+enum {
+ KEY_SELECTED,
+ CHANGED,
+ LAST_SIGNAL
+};
+
+
+/*========================================================*/
+/* Private globals. */
+/*========================================================*/
+
+static guint signals[LAST_SIGNAL] = {0};
+
+
+/*========================================================*/
+/* Private function prototypes. */
+/*========================================================*/
+
+static void gl_field_button_finalize (GObject *object);
+
+static gboolean
+button_press_event_cb (GtkWidget *widget,
+ GdkEventButton *event,
+ glFieldButton *this);
+
+static void
+menu_key_selected_cb (glFieldButtonMenu *menu,
+ gchar *key,
+ glFieldButton *this);
+
+static void
+menu_selection_done_cb (GtkMenuShell *object,
+ glFieldButton *this);
+
+
+/*****************************************************************************/
+/* Object infrastructure. */
+/*****************************************************************************/
+G_DEFINE_TYPE (glFieldButton, gl_field_button, GTK_TYPE_TOGGLE_BUTTON)
+
+
+/*****************************************************************************/
+/* Class Init Function. */
+/*****************************************************************************/
+static void
+gl_field_button_class_init (glFieldButtonClass *class)
+{
+ GObjectClass *gobject_class = (GObjectClass *) class;
+
+ gl_field_button_parent_class = g_type_class_peek_parent (class);
+
+ gobject_class->finalize = gl_field_button_finalize;
+
+ signals[KEY_SELECTED] =
+ g_signal_new ("key_selected",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glFieldButtonClass, key_selected),
+ NULL, NULL,
+ gl_marshal_VOID__STRING,
+ G_TYPE_NONE, 1, G_TYPE_STRING);
+
+ signals[CHANGED] =
+ g_signal_new ("changed",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glFieldButtonClass, changed),
+ NULL, NULL,
+ gl_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+}
+
+
+/*****************************************************************************/
+/* Object Instance Init Function. */
+/*****************************************************************************/
+static void
+gl_field_button_init (glFieldButton *this)
+{
+ GtkWidget *hbox;
+ GtkWidget *arrow;
+
+ this->priv = g_new0 (glFieldButtonPrivate, 1);
+
+ hbox = gtk_hbox_new (FALSE, 3);
+ gtk_container_add (GTK_CONTAINER (this), hbox);
+
+ this->priv->label = gtk_label_new ("");
+ gtk_misc_set_alignment (GTK_MISC (this->priv->label), 0.0, 0.5);
+ gtk_box_pack_start (GTK_BOX (hbox), this->priv->label, TRUE, TRUE, 0);
+
+ arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
+ gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
+
+ g_signal_connect (this, "button_press_event",
+ G_CALLBACK(button_press_event_cb), this);
+}
+
+
+/*****************************************************************************/
+/* Finalize Method. */
+/*****************************************************************************/
+static void
+gl_field_button_finalize (GObject *object)
+{
+ glFieldButton *this;
+
+ g_return_if_fail (object && IS_GL_FIELD_BUTTON (object));
+ this = GL_FIELD_BUTTON (object);
+
+ g_object_ref_sink (this->priv->menu);
+ g_free (this->priv);
+
+ G_OBJECT_CLASS (gl_field_button_parent_class)->finalize (object);
+}
+
+
+/*****************************************************************************/
+/** New Object Generator. */
+/*****************************************************************************/
+GtkWidget *
+gl_field_button_new (const gchar *name)
+{
+ glFieldButton *this;
+
+ this = g_object_new (TYPE_GL_FIELD_BUTTON, NULL);
+
+ if ( name )
+ {
+ gtk_label_set_text (GTK_LABEL (this->priv->label), name);
+ }
+ else
+ {
+ this->priv->label_is_key = TRUE;
+ }
+
+ this->priv->menu = gl_field_button_menu_new ();
+
+ gtk_widget_show_all (this->priv->menu);
+
+ g_signal_connect (this->priv->menu, "key_selected",
+ G_CALLBACK (menu_key_selected_cb), this);
+ g_signal_connect (this->priv->menu, "selection_done",
+ G_CALLBACK (menu_selection_done_cb), this);
+
+ return GTK_WIDGET (this);
+}
+
+
+/*****************************************************************************/
+/* Set key list. */
+/*****************************************************************************/
+void
+gl_field_button_set_keys (glFieldButton *this,
+ GList *key_list)
+{
+ gl_field_button_menu_set_keys (GL_FIELD_BUTTON_MENU (this->priv->menu),
+ key_list);
+ this->priv->key = g_strdup (key_list->data);
+ if ( this->priv->label_is_key )
+ {
+ gtk_label_set_text (GTK_LABEL (this->priv->label), key_list->data);
+ }
+
+ gtk_widget_show_all (this->priv->menu);
+}
+
+
+/*****************************************************************************/
+/* Set current key. */
+/*****************************************************************************/
+void
+gl_field_button_set_key (glFieldButton *this,
+ const gchar *key)
+{
+ g_free (this->priv->key);
+ this->priv->key = g_strdup (key);
+
+ if ( this->priv->label_is_key )
+ {
+ gtk_label_set_text (GTK_LABEL (this->priv->label), key);
+ }
+}
+
+
+/*****************************************************************************/
+/* Get current key. */
+/*****************************************************************************/
+gchar *
+gl_field_button_get_key (glFieldButton *this)
+{
+ return g_strdup (this->priv->key);
+}
+
+
+/*****************************************************************************/
+/* Menu positioning function. */
+/*****************************************************************************/
+static void
+menu_position_function (GtkMenu *menu,
+ gint *x,
+ gint *y,
+ gboolean *push_in,
+ glFieldButton *this)
+{
+ GdkScreen *screen;
+ gint w_screen, h_screen;
+ GdkWindow *window;
+ gint x_window, y_window;
+ GtkAllocation allocation;
+ gint x_this, y_this, h_this;
+ GtkRequisition menu_requisition;
+ gint h_menu, w_menu;
+
+ /*
+ * Screen size
+ */
+ screen = gtk_widget_get_screen (GTK_WIDGET (this));
+ w_screen = gdk_screen_get_width (screen);
+ h_screen = gdk_screen_get_height (screen);
+
+ /*
+ * Absolute position of "this" window on screen.
+ */
+ window = gtk_widget_get_window (GTK_WIDGET (this));
+ gdk_window_get_origin (window, &x_window, &y_window);
+
+ /*
+ * Position and size of "this" inside window
+ */
+ gtk_widget_get_allocation (GTK_WIDGET (this), &allocation);
+ x_this = allocation.x;
+ y_this = allocation.y;
+ h_this = allocation.height;
+
+ /*
+ * Size of menu.
+ */
+ gtk_widget_size_request (this->priv->menu, &menu_requisition);
+ h_menu = menu_requisition.height;
+ w_menu = menu_requisition.width;
+
+ /*
+ * Default position anchored to lower left corner of "this".
+ */
+ *x = x_window + x_this;
+ *y = y_window + y_this + h_this;
+
+ /*
+ * Adjust vertical position if menu if extends past bottom of screen.
+ */
+ if ( (*y + h_menu) > h_screen )
+ {
+ *y = y_window + y_this - h_menu;
+
+ if ( *y < 0 )
+ {
+ *y = h_screen - h_menu;
+ }
+ }
+
+ /*
+ * Adjust horizontal position if menu if extends past edge of screen.
+ */
+ if ( (*x + w_menu) > w_screen )
+ {
+ *x = w_screen - w_menu;
+ }
+
+
+ *push_in = TRUE;
+}
+
+
+/*****************************************************************************/
+/* Button "button_press_event" callback. */
+/*****************************************************************************/
+static gboolean
+button_press_event_cb (GtkWidget *widget,
+ GdkEventButton *event,
+ glFieldButton *this)
+{
+ switch (event->button)
+ {
+
+ case 1:
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), TRUE);
+
+ gtk_menu_popup (GTK_MENU (this->priv->menu),
+ NULL, NULL,
+ (GtkMenuPositionFunc)menu_position_function, this,
+ event->button, event->time);
+ break;
+
+ default:
+ break;
+
+ }
+
+ return FALSE;
+}
+
+
+/*****************************************************************************/
+/* Menu "key selected" callback. */
+/*****************************************************************************/
+static void
+menu_key_selected_cb (glFieldButtonMenu *menu,
+ gchar *key,
+ glFieldButton *this)
+{
+ if (this->priv->label_is_key)
+ {
+ gtk_label_set_text (GTK_LABEL (this->priv->label), key);
+ }
+
+ g_free (this->priv->key);
+ this->priv->key = g_strdup (key);
+
+ g_signal_emit (this, signals[KEY_SELECTED], 0, key);
+ g_signal_emit (this, signals[CHANGED], 0);
+}
+
+
+/*****************************************************************************/
+/* Menu "selection done" callback. */
+/*****************************************************************************/
+static void
+menu_selection_done_cb (GtkMenuShell *object,
+ glFieldButton *this)
+{
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), FALSE);
+}
+
+
+
+/*
+ * Local Variables: -- emacs
+ * mode: C -- emacs
+ * c-basic-offset: 8 -- emacs
+ * tab-width: 8 -- emacs
+ * indent-tabs-mode: nil -- emacs
+ * End: -- emacs
+ */
projects / glabels / blobdiff