Initial revision

1 files changed, 165 insertions, 0 deletions

diff --git a/gtk/gtkarrow.c b/gtk/gtkarrow.c
new file mode 100644
index 0000000000..b8bc2143ed
--- /dev/null
+++ b/gtk/gtkarrow.c
@@ -0,0 +1,165 @@
+/* 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 "gtkarrow.h"
+
+
+#define MIN_ARROW_SIZE  11
+
+
+static void gtk_arrow_class_init (GtkArrowClass  *klass);
+static void gtk_arrow_init       (GtkArrow       *arrow);
+static gint gtk_arrow_expose     (GtkWidget      *widget,
+				  GdkEventExpose *event);
+
+
+guint
+gtk_arrow_get_type ()
+{
+  static guint arrow_type = 0;
+
+  if (!arrow_type)
+    {
+      GtkTypeInfo arrow_info =
+      {
+	"GtkArrow",
+	sizeof (GtkArrow),
+	sizeof (GtkArrowClass),
+	(GtkClassInitFunc) gtk_arrow_class_init,
+	(GtkObjectInitFunc) gtk_arrow_init,
+	(GtkArgFunc) NULL,
+      };
+
+      arrow_type = gtk_type_unique (gtk_misc_get_type (), &arrow_info);
+    }
+
+  return arrow_type;
+}
+
+static void
+gtk_arrow_class_init (GtkArrowClass *class)
+{
+  GtkWidgetClass *widget_class;
+
+  widget_class = (GtkWidgetClass*) class;
+
+  widget_class->expose_event = gtk_arrow_expose;
+}
+
+static void
+gtk_arrow_init (GtkArrow *arrow)
+{
+  GTK_WIDGET_SET_FLAGS (arrow, GTK_NO_WINDOW);
+
+  arrow->arrow_type = GTK_ARROW_RIGHT;
+  arrow->shadow_type = GTK_SHADOW_OUT;
+}
+
+GtkWidget*
+gtk_arrow_new (GtkArrowType  arrow_type,
+	       GtkShadowType shadow_type)
+{
+  GtkArrow *arrow;
+
+  arrow = gtk_type_new (gtk_arrow_get_type ());
+
+  GTK_WIDGET (arrow)->requisition.width = MIN_ARROW_SIZE + GTK_MISC (arrow)->xpad * 2;
+  GTK_WIDGET (arrow)->requisition.height = MIN_ARROW_SIZE + GTK_MISC (arrow)->ypad * 2;
+
+  arrow->arrow_type = arrow_type;
+  arrow->shadow_type = shadow_type;
+
+  return GTK_WIDGET (arrow);
+}
+
+void
+gtk_arrow_set (GtkArrow      *arrow,
+	       GtkArrowType   arrow_type,
+	       GtkShadowType  shadow_type)
+{
+  g_return_if_fail (arrow != NULL);
+  g_return_if_fail (GTK_IS_ARROW (arrow));
+
+  if (((GtkArrowType) arrow->arrow_type != arrow_type) ||
+      ((GtkShadowType) arrow->shadow_type != shadow_type))
+    {
+      arrow->arrow_type = arrow_type;
+      arrow->shadow_type = shadow_type;
+
+      if (GTK_WIDGET_DRAWABLE (arrow))
+	{
+	  gdk_window_clear_area (GTK_WIDGET (arrow)->window,
+				 GTK_WIDGET (arrow)->allocation.x + 1,
+				 GTK_WIDGET (arrow)->allocation.y + 1,
+				 GTK_WIDGET (arrow)->allocation.width - 2,
+				 GTK_WIDGET (arrow)->allocation.height - 2);
+	  gtk_widget_queue_draw (GTK_WIDGET (arrow));
+	}
+    }
+}
+
+
+static gint
+gtk_arrow_expose (GtkWidget      *widget,
+		  GdkEventExpose *event)
+{
+  GtkArrow *arrow;
+  GtkMisc *misc;
+  GtkShadowType shadow_type;
+  gint width, height;
+  gint x, y;
+  gint extent;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_ARROW (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  if (GTK_WIDGET_DRAWABLE (widget))
+    {
+      arrow = GTK_ARROW (widget);
+      misc = GTK_MISC (widget);
+
+      width = widget->allocation.width - misc->xpad * 2;
+      height = widget->allocation.height - misc->ypad * 2;
+      extent = MIN (width, height);
+
+      x = ((widget->allocation.x + misc->xpad) * (1.0 - misc->xalign) +
+	   (widget->allocation.x + widget->allocation.width - extent - misc->ypad) * misc->xalign);
+      y = ((widget->allocation.y + misc->ypad) * (1.0 - misc->yalign) +
+	   (widget->allocation.y + widget->allocation.height - extent - misc->ypad) * misc->yalign);
+
+      shadow_type = arrow->shadow_type;
+
+      if (widget->state == GTK_STATE_ACTIVE)
+	{
+          if (shadow_type == GTK_SHADOW_IN)
+            shadow_type = GTK_SHADOW_OUT;
+          else if (shadow_type == GTK_SHADOW_OUT)
+            shadow_type = GTK_SHADOW_IN;
+          else if (shadow_type == GTK_SHADOW_ETCHED_IN)
+            shadow_type = GTK_SHADOW_ETCHED_OUT;
+          else if (shadow_type == GTK_SHADOW_ETCHED_OUT)
+            shadow_type = GTK_SHADOW_ETCHED_IN;
+	}
+
+      gtk_draw_arrow (widget->style, widget->window,
+		      widget->state, shadow_type, arrow->arrow_type, TRUE,
+		      x, y, extent, extent);
+    }
+
+  return FALSE;
+}