Initial revision

1 files changed, 452 insertions, 0 deletions

diff --git a/gtk/gtkpaned.c b/gtk/gtkpaned.c
new file mode 100644
index 000000000..d6b53db3d
--- /dev/null
+++ b/gtk/gtkpaned.c
@@ -0,0 +1,452 @@
+/* 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.
+ */
+#include "gtkpaned.h"
+
+
+static void gtk_paned_class_init (GtkPanedClass    *klass);
+static void gtk_paned_init       (GtkPaned         *paned);
+static void gtk_paned_destroy    (GtkObject      *object);
+static void gtk_paned_realize    (GtkWidget *widget);
+static void gtk_paned_map        (GtkWidget      *widget);
+static void gtk_paned_unmap      (GtkWidget      *widget);
+static void gtk_paned_unrealize  (GtkWidget *widget);
+static gint gtk_paned_expose     (GtkWidget      *widget,
+			        GdkEventExpose *event);
+static void gtk_paned_add        (GtkContainer   *container,
+			        GtkWidget      *widget);
+static void gtk_paned_remove     (GtkContainer   *container,
+			        GtkWidget      *widget);
+static void gtk_paned_foreach    (GtkContainer   *container,
+			        GtkCallback     callback,
+			        gpointer        callback_data);
+
+
+static GtkContainerClass *parent_class = NULL;
+
+
+guint
+gtk_paned_get_type ()
+{
+  static guint paned_type = 0;
+
+  if (!paned_type)
+    {
+      GtkTypeInfo paned_info =
+      {
+	"GtkPaned",
+	sizeof (GtkPaned),
+	sizeof (GtkPanedClass),
+	(GtkClassInitFunc) gtk_paned_class_init,
+	(GtkObjectInitFunc) gtk_paned_init,
+	(GtkArgFunc) NULL,
+      };
+
+      paned_type = gtk_type_unique (gtk_container_get_type (), &paned_info);
+    }
+
+  return paned_type;
+}
+
+static void
+gtk_paned_class_init (GtkPanedClass *class)
+{
+  GtkObjectClass *object_class;
+  GtkWidgetClass *widget_class;
+  GtkContainerClass *container_class;
+
+  object_class = (GtkObjectClass*) class;
+  widget_class = (GtkWidgetClass*) class;
+  container_class = (GtkContainerClass*) class;
+
+  parent_class = gtk_type_class (gtk_container_get_type ());
+
+  object_class->destroy = gtk_paned_destroy;
+
+  widget_class->realize = gtk_paned_realize;
+  widget_class->map = gtk_paned_map;
+  widget_class->unmap = gtk_paned_unmap;
+  widget_class->unrealize = gtk_paned_unrealize;
+  widget_class->expose_event = gtk_paned_expose;
+
+  container_class->add = gtk_paned_add;
+  container_class->remove = gtk_paned_remove;
+  container_class->foreach = gtk_paned_foreach;
+}
+
+static void
+gtk_paned_init (GtkPaned *paned)
+{
+  GTK_WIDGET_SET_FLAGS (paned, GTK_NO_WINDOW);
+
+  paned->child1 = NULL;
+  paned->child2 = NULL;
+  paned->handle = NULL;
+  paned->xor_gc = NULL;
+
+  paned->handle_size = 10;
+  paned->gutter_size = 6;
+  paned->position_set = FALSE;
+  paned->in_drag = FALSE;
+
+  paned->handle_xpos = -1;
+  paned->handle_ypos = -1;
+}
+
+
+static void
+gtk_paned_destroy (GtkObject *object)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (object != NULL);
+  g_return_if_fail (GTK_IS_PANED (object));
+
+  paned = GTK_PANED (object);
+
+  if (paned->child1)
+    {
+      paned->child1->parent = NULL;
+      gtk_object_unref (GTK_OBJECT (paned->child1));
+      gtk_widget_destroy (paned->child1);
+    }
+  if (paned->child2)
+    {
+      paned->child2->parent = NULL;
+      gtk_object_unref (GTK_OBJECT (paned->child2));
+      gtk_widget_destroy (paned->child2);
+    }
+
+  if (GTK_OBJECT_CLASS (parent_class)->destroy)
+    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+static void
+gtk_paned_realize (GtkWidget *widget)
+{
+  GtkPaned *paned;
+  GdkWindowAttr attributes;
+  gint attributes_mask;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_PANED (widget));
+
+  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+  paned = GTK_PANED (widget);
+
+  attributes.x = paned->handle_xpos;
+  attributes.y = paned->handle_ypos;
+  attributes.width = paned->handle_size;
+  attributes.height = paned->handle_size;
+  attributes.wclass = GDK_INPUT_OUTPUT;
+  attributes.window_type = GDK_WINDOW_CHILD;
+  attributes.visual = gtk_widget_get_visual (widget);
+  attributes.colormap = gtk_widget_get_colormap (widget);
+  attributes.cursor = gdk_cursor_new(GDK_CROSS);
+  attributes.event_mask = gtk_widget_get_events (widget);
+  attributes.event_mask |= (GDK_EXPOSURE_MASK |
+			    GDK_BUTTON_PRESS_MASK |
+			    GDK_BUTTON_RELEASE_MASK |
+			    GDK_POINTER_MOTION_MASK |
+			    GDK_POINTER_MOTION_HINT_MASK);
+
+  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP |
+    GDK_WA_CURSOR;
+
+  paned->handle = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
+  gdk_window_set_user_data (paned->handle, widget);
+  gdk_window_show (paned->handle);
+  gdk_window_raise (paned->handle);
+
+  widget->window = widget->parent->window;
+  widget->style = gtk_style_attach (widget->style, widget->window);
+
+  gtk_style_set_background (widget->style, paned->handle, GTK_STATE_NORMAL);
+}
+
+static void
+gtk_paned_map (GtkWidget *widget)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_PANED (widget));
+
+  GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
+  paned = GTK_PANED (widget);
+
+  gdk_window_show (paned->handle);
+  gtk_widget_queue_draw (widget);
+
+  if (paned->child1 &&
+      GTK_WIDGET_VISIBLE (paned->child1) &&
+      !GTK_WIDGET_MAPPED (paned->child1))
+    gtk_widget_map (paned->child1);
+  if (paned->child2 &&
+      GTK_WIDGET_VISIBLE (paned->child2) &&
+      !GTK_WIDGET_MAPPED (paned->child2))
+    gtk_widget_map (paned->child2);
+}
+
+static void
+gtk_paned_unmap (GtkWidget *widget)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_PANED (widget));
+
+  GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
+  paned = GTK_PANED (widget);
+
+  gdk_window_clear_area (widget->window,
+			 widget->allocation.x,
+			 widget->allocation.y,
+			 widget->allocation.width,
+			 widget->allocation.height);
+  gdk_window_hide (paned->handle);
+
+  if (paned->child1 &&
+      GTK_WIDGET_VISIBLE (paned->child1) &&
+      GTK_WIDGET_MAPPED (paned->child1))
+    gtk_widget_unmap (paned->child1);
+  if (paned->child2 &&
+      GTK_WIDGET_VISIBLE (paned->child2) &&
+      GTK_WIDGET_MAPPED (paned->child2))
+    gtk_widget_unmap (paned->child2);
+}
+
+static void
+gtk_paned_unrealize (GtkWidget *widget)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_PANED (widget));
+
+  GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED);
+  paned = GTK_PANED (widget);
+
+  gtk_style_detach (widget->style);
+
+  if (paned->xor_gc)
+    gdk_gc_destroy (paned->xor_gc);
+  if (paned->handle)
+    gdk_window_destroy (paned->handle);
+
+  paned->handle = NULL;
+  widget->window = NULL;
+}
+
+static gint
+gtk_paned_expose (GtkWidget      *widget,
+		  GdkEventExpose *event)
+{
+  GtkPaned *paned;
+  GdkEventExpose child_event;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  if (GTK_WIDGET_DRAWABLE (widget))
+    {
+      paned = GTK_PANED (widget);
+
+      /* An expose event for the handle */
+      if (event->window == paned->handle)
+	{
+	  gdk_window_set_background (paned->handle,
+				     &widget->style->bg[widget->state]);
+	  gdk_window_clear (paned->handle);
+	  gtk_draw_shadow (widget->style, paned->handle,
+			   GTK_WIDGET_STATE(widget),
+			   GTK_SHADOW_OUT, 0, 0,
+			   paned->handle_size, paned->handle_size);
+	}
+      else
+	{
+	  child_event = *event;
+	  if (paned->child1 &&
+	      GTK_WIDGET_NO_WINDOW (paned->child1) &&
+	      gtk_widget_intersect (paned->child1, &event->area, &child_event.area))
+	    gtk_widget_event (paned->child1, (GdkEvent*) &child_event);
+
+	  if (paned->child2 &&
+	      GTK_WIDGET_NO_WINDOW (paned->child2) &&
+	      gtk_widget_intersect (paned->child2, &event->area, &child_event.area))
+	    gtk_widget_event (paned->child2, (GdkEvent*) &child_event);
+
+	  /* redraw the groove if necessary */
+	  child_event.area = paned->groove_rectangle;
+	  if (gtk_widget_intersect (widget, &event->area, &child_event.area))
+	    gtk_widget_draw (widget, &child_event.area);
+	}
+    }
+  return FALSE;
+}
+
+void
+gtk_paned_add1 (GtkPaned     *paned,
+		GtkWidget    *widget)
+{
+  g_return_if_fail (widget != NULL);
+
+  if (!paned->child1)
+    {
+      gtk_widget_set_parent (widget, GTK_WIDGET (paned));
+
+      if (GTK_WIDGET_VISIBLE (widget->parent))
+	{
+	  if (GTK_WIDGET_REALIZED (widget->parent) &&
+	      !GTK_WIDGET_REALIZED (widget))
+	    gtk_widget_realize (widget);
+	  
+	  if (GTK_WIDGET_MAPPED (widget->parent) &&
+	      !GTK_WIDGET_MAPPED (widget))
+	    gtk_widget_map (widget);
+	}
+
+      paned->child1 = widget;
+
+      if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (paned))
+        gtk_widget_queue_resize (widget);
+    }
+}
+
+void
+gtk_paned_add2 (GtkPaned  *paned,
+		GtkWidget *widget)
+{
+  g_return_if_fail (widget != NULL);
+
+  if (!paned->child2)
+    {
+      gtk_widget_set_parent (widget, GTK_WIDGET (paned));
+
+      if (GTK_WIDGET_VISIBLE (widget->parent))
+	{
+	  if (GTK_WIDGET_REALIZED (widget->parent) &&
+	      !GTK_WIDGET_REALIZED (widget))
+	    gtk_widget_realize (widget);
+	  
+	  if (GTK_WIDGET_MAPPED (widget->parent) &&
+	      !GTK_WIDGET_MAPPED (widget))
+	    gtk_widget_map (widget);
+	}
+
+      paned->child2 = widget;
+
+      if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (paned))
+        gtk_widget_queue_resize (widget);
+    }
+}
+
+static void
+gtk_paned_add (GtkContainer *container,
+	       GtkWidget    *widget)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (container != NULL);
+  g_return_if_fail (GTK_IS_PANED (container));
+  g_return_if_fail (widget != NULL);
+
+  paned = GTK_PANED (container);
+
+  if (!paned->child1)
+    gtk_paned_add1 (GTK_PANED (container),widget);
+  else if (!paned->child2)
+    gtk_paned_add2 (GTK_PANED (container),widget);
+}
+
+static void
+gtk_paned_remove (GtkContainer *container,
+		  GtkWidget    *widget)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (container != NULL);
+  g_return_if_fail (GTK_IS_PANED (container));
+  g_return_if_fail (widget != NULL);
+
+  paned = GTK_PANED (container);
+
+  if (paned->child1 == widget)
+    {
+      gtk_widget_unparent (widget);
+
+      paned->child1 = NULL;
+
+      if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
+        gtk_widget_queue_resize (GTK_WIDGET (container));
+    }
+  else if (paned->child2 == widget)
+    {
+      gtk_widget_unparent (widget);
+
+      paned->child2 = NULL;
+
+      if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
+        gtk_widget_queue_resize (GTK_WIDGET (container));
+    }
+}
+
+static void
+gtk_paned_foreach (GtkContainer *container,
+		 GtkCallback   callback,
+		 gpointer      callback_data)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (container != NULL);
+  g_return_if_fail (GTK_IS_PANED (container));
+  g_return_if_fail (callback != NULL);
+
+  paned = GTK_PANED (container);
+
+  if (paned->child1)
+    (* callback) (paned->child1, callback_data);
+  if (paned->child2)
+    (* callback) (paned->child2, callback_data);
+}
+
+void
+gtk_paned_handle_size (GtkPaned *paned, guint16 size)
+{
+  gint x,y;
+
+  if (paned->handle)
+    {
+      gdk_window_get_geometry (paned->handle, &x, &y, NULL, NULL, NULL);
+      gdk_window_move_resize (paned->handle,
+                              x + paned->handle_size / 2 - size / 2,
+                              y + paned->handle_size / 2 - size / 2,
+                              size, size);
+    }
+  
+  paned->handle_size = size;
+}
+
+void
+gtk_paned_gutter_size (GtkPaned *paned, guint16 size)
+{
+  paned->gutter_size = size;
+
+  if (GTK_WIDGET_VISIBLE (GTK_WIDGET (paned)))
+    gtk_widget_queue_resize (GTK_WIDGET (paned));
+}