--- /dev/null
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ * Copyright (C) 1998 Elliot Lee
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/* NOTES about this widget:
+ It would be nice if we kept track of the last menu item that
+ people selected, so that we could allow choosing text by using
+ up/down arrows.
+*/
+#include <ctype.h>
+#include <string.h>
+#include "gdk/gdkx.h"
+#include "gdk/gdkkeysyms.h"
+#include "gdk/gdki18n.h"
+#include "gtkcombobox.h"
+#include "gtkmain.h"
+#include "gtksignal.h"
+#include "gtkmenu.h"
+#include "gtkmenuitem.h"
+#include "gtklabel.h"
+#include "gtkbin.h"
+
+#define ARROW_SIZE_X 20
+#define ARROW_SIZE_Y 20
+#define ARROW_PADDING 4
+
+static void gtk_combo_box_class_init (GtkComboBoxClass *class);
+static void gtk_combo_box_init (GtkComboBox *combobox);
+static void gtk_combo_box_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gtk_combo_box_size_allocate(GtkWidget *widget,
+ GtkAllocation *allocation);
+static void gtk_combo_box_draw (GtkWidget *widget,
+ GdkRectangle *area);
+static void gtk_combo_box_draw_arrow (GtkWidget *widget);
+static gint gtk_combo_box_expose (GtkWidget *object,
+ GdkEventExpose *event);
+static void gtk_combo_box_destroy (GtkObject *object);
+#if 0
+static gint gtk_combo_box_key_press (GtkWidget *widget,
+ GdkEventKey *event);
+#endif
+static gint gtk_combo_box_button_press (GtkWidget *widget,
+ GdkEventButton *event);
+static void gtk_combo_box_realize (GtkWidget *widget);
+static void gtk_combo_box_item_activate(GtkWidget *widget,
+ GtkComboBox *cb);
+static void gtk_combo_box_set_down (GtkWidget *widget,
+ GtkComboBox *cb);
+static void gtk_combo_box_set_up (GtkWidget *widget,
+ GtkComboBox *cb);
+
+static GtkEntryClass *parent_class = NULL;
+
+guint
+gtk_combo_box_get_type ()
+{
+ static guint combo_box_type = 0;
+
+ if (!combo_box_type)
+ {
+ GtkTypeInfo combo_box_info =
+ {
+ "GtkComboBox",
+ sizeof (GtkComboBox),
+ sizeof (GtkComboBoxClass),
+ (GtkClassInitFunc) gtk_combo_box_class_init,
+ (GtkObjectInitFunc) gtk_combo_box_init,
+ (GtkArgFunc) NULL,
+ };
+
+ combo_box_type = gtk_type_unique (gtk_entry_get_type (), &combo_box_info);
+ }
+
+ return combo_box_type;
+}
+
+static void
+gtk_combo_box_class_init (GtkComboBoxClass *class)
+{
+ GtkObjectClass *object_class;
+ GtkWidgetClass *widget_class;
+
+ object_class = (GtkObjectClass *) class;
+ widget_class = (GtkWidgetClass *) class;
+
+ parent_class = gtk_type_class (gtk_entry_get_type ());
+
+ object_class->destroy = gtk_combo_box_destroy;
+
+ widget_class->button_press_event = gtk_combo_box_button_press;
+#if 0
+ widget_class->key_press_event = gtk_combo_box_key_press;
+#endif
+ widget_class->size_request = gtk_combo_box_size_request;
+ widget_class->size_allocate = gtk_combo_box_size_allocate;
+ widget_class->draw = gtk_combo_box_draw;
+ widget_class->expose_event = gtk_combo_box_expose;
+ widget_class->realize = gtk_combo_box_realize;
+
+}
+
+static void
+gtk_combo_box_init (GtkComboBox *combobox)
+{
+ GTK_WIDGET_SET_FLAGS (combobox, GTK_CAN_FOCUS);
+
+ combobox->popdown = NULL;
+ combobox->menu_is_down = FALSE;
+}
+
+GtkWidget*
+gtk_combo_box_new (GList *popdown_strings)
+{
+ GtkWidget *retval = GTK_WIDGET (gtk_type_new (gtk_combo_box_get_type ()));
+ if(popdown_strings)
+ gtk_combo_box_set_popdown_strings(GTK_COMBO_BOX(retval), popdown_strings);
+ return retval;
+}
+
+GtkWidget*
+gtk_combo_box_new_with_max_length (GList *popdown_strings,
+ guint16 max)
+{
+ GtkWidget *retval;
+ retval = GTK_WIDGET(gtk_type_new (gtk_combo_box_get_type ()));
+ GTK_ENTRY(retval)->text_max_length = max;
+ if(popdown_strings)
+ gtk_combo_box_set_popdown_strings(GTK_COMBO_BOX(retval), popdown_strings);
+ return retval;
+}
+
+void
+gtk_combo_box_set_popdown_strings(GtkComboBox *combobox,
+ GList *popdown_strings)
+{
+ GList *t;
+
+ g_return_if_fail(combobox != NULL);
+ g_return_if_fail(popdown_strings != NULL);
+ if(combobox->popdown)
+ gtk_widget_destroy(combobox->popdown);
+
+ combobox->popdown = gtk_menu_new();
+ gtk_signal_connect(GTK_OBJECT(combobox->popdown),
+ "show",
+ GTK_SIGNAL_FUNC(gtk_combo_box_set_down),
+ combobox);
+ gtk_signal_connect(GTK_OBJECT(combobox->popdown),
+ "hide",
+ GTK_SIGNAL_FUNC(gtk_combo_box_set_up),
+ combobox);
+
+ for(t = popdown_strings; t; t = t->next)
+ {
+ GtkWidget *mitem;
+ mitem = gtk_menu_item_new_with_label(t->data);
+ gtk_widget_show(mitem);
+ gtk_menu_append(GTK_MENU(combobox->popdown), mitem);
+ gtk_signal_connect(GTK_OBJECT(mitem), "activate",
+ GTK_SIGNAL_FUNC(gtk_combo_box_item_activate),
+ combobox);
+ }
+
+ if(GTK_WIDGET_REALIZED(combobox))
+ gtk_widget_set_usize(combobox->popdown,
+ GTK_WIDGET(combobox)->requisition.width,
+ -1);
+}
+
+static void
+gtk_combo_box_realize(GtkWidget *widget)
+{
+ GtkComboBox *cb;
+
+ g_return_if_fail(widget != NULL);
+ g_return_if_fail(GTK_IS_COMBO_BOX(widget));
+
+ cb = GTK_COMBO_BOX(widget);
+ GTK_WIDGET_CLASS(parent_class)->realize(widget);
+ gdk_window_set_background (GTK_WIDGET(widget)->window,
+ &widget->style->bg[GTK_WIDGET_STATE(widget)]);
+
+ if(cb->popdown)
+ {
+ gtk_widget_set_usize(cb->popdown,
+ widget->requisition.width,
+ -1);
+ }
+}
+
+static void
+gtk_combo_box_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_COMBO_BOX (widget));
+ g_return_if_fail (requisition != NULL);
+
+ GTK_WIDGET_CLASS(parent_class)->size_request(widget, requisition);
+
+ requisition->width += ARROW_SIZE_X;
+ if(requisition->height < ARROW_SIZE_Y)
+ requisition->height = ARROW_SIZE_Y;
+}
+
+static void
+gtk_combo_box_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ GtkComboBox *cb;
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_COMBO_BOX (widget));
+ g_return_if_fail (allocation != NULL);
+
+ cb = GTK_COMBO_BOX(widget);
+
+ widget->allocation = *allocation;
+
+ GTK_WIDGET_CLASS(parent_class)->size_allocate(widget, allocation);
+#define INNER_BORDER 2
+ gdk_window_resize(GTK_ENTRY(widget)->text_area,
+ allocation->width - (widget->style->klass->xthickness + INNER_BORDER) * 2 - ARROW_SIZE_X,
+ widget->requisition.height - (widget->style->klass->ythickness + INNER_BORDER) * 2);
+}
+
+static void
+gtk_combo_box_draw_arrow (GtkWidget *widget)
+{
+ gint sx, sy;
+
+ sx = widget->allocation.width - ARROW_SIZE_X;
+ sy = ARROW_PADDING;
+ widget->style->klass->draw_arrow(widget->style,
+ widget->window,
+ GTK_WIDGET_STATE(widget),
+ GTK_SHADOW_OUT,
+ GTK_ARROW_DOWN, TRUE,
+ sx, sy,
+ ARROW_SIZE_X - ARROW_PADDING,
+ ARROW_SIZE_Y - ARROW_PADDING - 2);
+}
+
+static void
+gtk_combo_box_draw (GtkWidget *widget,
+ GdkRectangle *area)
+{
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_COMBO_BOX (widget));
+ g_return_if_fail (area != NULL);
+
+ if (GTK_WIDGET_DRAWABLE (widget))
+ {
+ gtk_combo_box_draw_arrow(widget);
+ GTK_WIDGET_CLASS(parent_class)->draw(widget, area);
+ }
+}
+
+static gint
+gtk_combo_box_expose (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ gint retval;
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ gtk_combo_box_draw_arrow(widget);
+ retval = GTK_WIDGET_CLASS(parent_class)->expose_event(widget, event);
+ return retval;
+}
+
+static void
+gtk_combo_box_position_menu(GtkMenu *menu,
+ gint *x,
+ gint *y,
+ gpointer user_data)
+{
+ GtkComboBox *cb;
+ GtkWidget *widget;
+ gint rootw, rooth, wy;
+
+ g_return_if_fail(user_data != NULL);
+ g_return_if_fail(GTK_IS_COMBO_BOX(user_data));
+
+ cb = GTK_COMBO_BOX(user_data);
+ widget = GTK_WIDGET(user_data);
+
+ gdk_window_get_origin(widget->window, x, &wy);
+ *y = wy + widget->allocation.height;
+
+ gdk_window_get_size(GDK_ROOT_PARENT(), &rootw, &rooth);
+
+ /* This check isn't perfect - what if the menu is too big to fit on
+ the screen going either up or down? *sigh* not a perfect
+ world, I guess */
+ if((*y + GTK_WIDGET(menu)->requisition.height) > rooth)
+ *y = wy - GTK_WIDGET(menu)->requisition.height;
+}
+
+static void
+gtk_combo_box_set_down (GtkWidget *widget,
+ GtkComboBox *cb)
+{
+ g_return_if_fail(GTK_IS_COMBO_BOX(cb));
+
+ cb->menu_is_down = TRUE;
+}
+
+static void
+gtk_combo_box_set_up (GtkWidget *widget,
+ GtkComboBox *cb)
+{
+ g_return_if_fail(GTK_IS_COMBO_BOX(cb));
+
+ cb->menu_is_down = FALSE;
+}
+
+static gint
+gtk_combo_box_button_press (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ GtkComboBox *cb;
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ cb = GTK_COMBO_BOX(widget);
+
+ if(event->window == widget->window
+ && event->x > (widget->allocation.width - ARROW_SIZE_X)
+ && event->x < widget->allocation.width
+ && event->button == 1)
+ {
+ gtk_menu_popup(GTK_MENU(cb->popdown),
+ NULL, NULL,
+ gtk_combo_box_position_menu,
+ cb, event->button,
+ event->time);
+ return TRUE;
+ }
+ else
+ return GTK_WIDGET_CLASS(parent_class)->button_press_event(widget, event);
+}
+
+#if 0
+static gint
+gtk_combo_box_key_press (GtkWidget *widget,
+ GdkEventKey *event)
+{
+
+ g_return_val_if_fail (widget != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ return GTK_WIDGET_CLASS(parent_class)->key_press_event(widget, event);
+}
+#endif
+
+static void
+gtk_combo_box_destroy(GtkObject *object)
+{
+ GtkComboBox *cb;
+ g_return_if_fail(GTK_IS_COMBO_BOX(object));
+
+ cb = GTK_COMBO_BOX(object);
+ if(cb->popdown)
+ gtk_widget_destroy(cb->popdown);
+
+ GTK_OBJECT_CLASS(parent_class)->destroy(object);
+}
+
+static void gtk_combo_box_item_activate(GtkWidget *widget,
+ GtkComboBox *cb)
+{
+ char *newtext = GTK_LABEL(GTK_BIN(widget)->child)->label;
+
+ gtk_entry_set_text(GTK_ENTRY(cb), newtext);
+}
projects / ~andy / gtk / commitdiff