New widget (GtkComboBox) and fixed gdk_window_init to initialize gdk_root_parent some more

7 files changed, 484 insertions, 6 deletions

diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index ff0c18e2b..a6ace7c35 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -18,6 +18,7 @@ libgtk_la_SOURCES = \
 	gtkcheckmenuitem.c	\
 	gtkclist.c		\
 	gtkcolorsel.c		\
+	gtkcombobox.c		\
 	gtkcontainer.c		\
 	gtkcurve.c		\
 	gtkdata.c		\
@@ -106,6 +107,7 @@ gtkinclude_HEADERS = \
 	gtkcheckmenuitem.h	\
 	gtkclist.h		\
 	gtkcolorsel.h		\
+	gtkcombobox.h		\
 	gtkcontainer.h		\
 	gtkcurve.h		\
 	gtkdata.h		\
diff --git a/gtk/gtk.h b/gtk/gtk.h
index dfce27528..345f3f942 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -33,6 +33,7 @@
 #include <gtk/gtkcheckmenuitem.h>
 #include <gtk/gtkclist.h>
 #include <gtk/gtkcolorsel.h>
+#include <gtk/gtkcombobox.h>
 #include <gtk/gtkcontainer.h>
 #include <gtk/gtkcurve.h>
 #include <gtk/gtkdata.h>
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
new file mode 100644
index 000000000..a9e101ff2
--- /dev/null
+++ b/gtk/gtkcombobox.c
@@ -0,0 +1,393 @@
+/* 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);
+}
diff --git a/gtk/gtkcombobox.h b/gtk/gtkcombobox.h
new file mode 100644
index 000000000..4aab5548c
--- /dev/null
+++ b/gtk/gtkcombobox.h
@@ -0,0 +1,66 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * 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.
+ */
+#ifndef __GTK_COMBO_H__
+#define __GTK_COMBO_H__
+
+
+#include <gdk/gdk.h>
+#include <gtk/gtkentry.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GTK_COMBO_BOX(obj)          GTK_CHECK_CAST (obj, gtk_combo_box_get_type (), GtkComboBox)
+#define GTK_COMBO_BOX_CLASS(klass)  GTK_CHECK_CLASS_CAST (klass, gtk_combo_box_get_type (), GtkComboBoxClass)
+#define GTK_IS_COMBO_BOX(obj)       GTK_CHECK_TYPE (obj, gtk_combo_box_get_type ())
+
+
+typedef struct _GtkComboBox       GtkComboBox;
+typedef struct _GtkComboBoxClass  GtkComboBoxClass;
+
+struct _GtkComboBox
+{
+  GtkEntry parent_widget;
+  GtkWidget *popdown;
+  gboolean menu_is_down;
+};
+
+struct _GtkComboBoxClass
+{
+  GtkEntryClass parent_class;
+};
+
+
+guint      gtk_combo_box_get_type     (void);
+/* These GList's should be lists of strings that should be placed
+   in the popdown menu */
+GtkWidget* gtk_combo_box_new          (GList *popdown_strings);
+GtkWidget* gtk_combo_box_new_with_max_length (GList *popdown_strings,
+					      guint16 max);
+void gtk_combo_box_set_popdown_strings(GtkComboBox *combobox,
+				       GList *popdown_strings);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GTK_ENTRY_H__ */
diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 9c6c58aaa..482712b1a 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -222,8 +222,13 @@ gtk_main_quit ()
   done = TRUE;
 }
 
+gint gtk_main_iteration ()
+{
+  return gtk_main_iteration_do(TRUE);
+}
+
 gint
-gtk_main_iteration ()
+gtk_main_iteration_do (gboolean blocking)
 {
   GtkWidget *event_widget;
   GtkWidget *grab_widget;
@@ -267,7 +272,7 @@ gtk_main_iteration ()
        */
       gtk_handle_timer ();
       
-      event = gdk_event_get ();
+      if(blocking) event = gdk_event_get ();
     }
   
   /* "gdk_event_get" can return FALSE if the timer goes off
diff --git a/gtk/gtkmain.h b/gtk/gtkmain.h
index ae588d4d2..708b2c1d6 100644
--- a/gtk/gtkmain.h
+++ b/gtk/gtkmain.h
@@ -38,6 +38,8 @@ void	   gtk_main		 (void);
 guint	   gtk_main_level	 (void);
 void	   gtk_main_quit	 (void);
 gint	   gtk_main_iteration	 (void);
+/* gtk_main_iteration() calls gtk_main_iteration_do(TRUE) */
+gint	   gtk_main_iteration_do (gboolean blocking);
 
 gint	   gtk_true		 (void);
 gint	   gtk_false		 (void);
diff --git a/gtk/testgtk.c b/gtk/testgtk.c
index 9c6aaf795..d3d9a46e2 100644
--- a/gtk/testgtk.c
+++ b/gtk/testgtk.c
@@ -20,7 +20,6 @@
 #include "gtk.h"
 #include "../gdk/gdk.h"
 #include "../gdk/gdkx.h"
-#include "gtkhandlebox.h"
 
 void
 destroy_window (GtkWidget  *widget,
@@ -1346,12 +1345,16 @@ create_entry ()
   GtkWidget *box1;
   GtkWidget *box2;
   GtkWidget *editable_check;
-  GtkWidget *entry;
+  GtkWidget *entry, *cb;
   GtkWidget *button;
   GtkWidget *separator;
+  GList *cbitems = NULL;
 
-  /*  if (!window) */
+  if (!window)
     {
+      cbitems = g_list_append(cbitems, "item1");
+      cbitems = g_list_append(cbitems, "item2");
+      cbitems = g_list_append(cbitems, "and item3");
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 
       gtk_signal_connect (GTK_OBJECT (window), "destroy",
@@ -1376,13 +1379,19 @@ create_entry ()
       gtk_widget_show (box2);
 
       entry = gtk_entry_new ();
-      /* gtk_widget_set_usize (entry, 0, 25); */
       gtk_entry_set_text (GTK_ENTRY (entry), "hello world");
       gtk_entry_select_region (GTK_ENTRY (entry), 
 			       0, GTK_ENTRY(entry)->text_length);
       gtk_box_pack_start (GTK_BOX (box2), entry, TRUE, TRUE, 0);
       gtk_widget_show (entry);
 
+      cb = gtk_combo_box_new (cbitems);
+      gtk_entry_set_text (GTK_ENTRY (cb), "hello world");
+      gtk_entry_select_region (GTK_ENTRY (cb),
+			       0, GTK_ENTRY(entry)->text_length);
+      gtk_box_pack_start (GTK_BOX (box2), cb, TRUE, TRUE, 0);
+      gtk_widget_show (cb);
+
       editable_check = gtk_check_button_new_with_label("Editable");
       gtk_box_pack_start (GTK_BOX (box2), editable_check, TRUE, TRUE, 0);
       gtk_signal_connect (GTK_OBJECT(editable_check), "toggled",