[monet/monet-xml] Set mn_widget names for scrollbar elements.

[Benjamin Berg <bberg src gnome org>]

commit 89c1a9de48548e999f8c1ddcf2499d5cb05f086b
Author: Benjamin Berg <benjamin sipsolutions net>
Date:   Tue Sep 14 23:30:51 2010 +0200

    Set mn_widget names for scrollbar elements.

 monet-gtk/style.c |  118 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 monet/mn-config.h |   13 ++++++
 2 files changed, 131 insertions(+), 0 deletions(-)
---
diff --git a/monet-gtk/style.c b/monet-gtk/style.c
index b47d3ee..e133e2f 100644
--- a/monet-gtk/style.c
+++ b/monet-gtk/style.c
@@ -2,6 +2,10 @@
  *
  *  Copyright (C) 2008  Benjamin Berg <benjamin sipsolutions net>
  *
+ *  Some portions adapted from Clearlooks:
+ *    Copyright (C) 2006 Andrew Johnson <acjgenius earthlink net>
+ *    Copyright (C) 2007 Benjamin Berg <benjamin sipsolutions net>
+ *
  *  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
@@ -259,6 +263,99 @@ monet_gtk_draw_arrow (GtkStyle      *style,
 
 /*##################################*/
 
+static gboolean
+_check_orientable_is_horizontal (GtkOrientable *orientable)
+{
+  return (gtk_orientable_get_orientation (orientable)
+          == GTK_ORIENTATION_HORIZONTAL);
+}
+
+
+/* the following function is adapted from Clearlooks' support.c */
+const gchar *
+_scrollbar_get_stepper (GtkWidget    *widget,
+                        GdkRectangle *stepper)
+{
+  const gchar *value = NULL;
+  GdkRectangle tmp;
+  GdkRectangle check_rectangle;
+  gboolean horizontal;
+  gint border;
+
+  if (!GTK_IS_RANGE (widget))
+    return "";
+
+  check_rectangle.x      = widget->allocation.x;
+  check_rectangle.y      = widget->allocation.y;
+  check_rectangle.width  = stepper->width;
+  check_rectangle.height = stepper->height;
+
+  horizontal = (gtk_orientable_get_orientation (GTK_ORIENTABLE (widget))
+                == GTK_ORIENTATION_HORIZONTAL);
+
+  if (widget->allocation.x == -1 && widget->allocation.y == -1)
+    return "";
+
+  /* Assume that the border is the same on all sides. */
+  if (horizontal)
+    border = stepper->y - check_rectangle.y;
+  else
+    border = stepper->x - check_rectangle.x;
+
+  check_rectangle.x += border;
+  check_rectangle.y += border;
+
+  if (gdk_rectangle_intersect (stepper, &check_rectangle, &tmp))
+    if (horizontal)
+      value = MN_SCROLLBAR_HSTEPPER_A;
+    else
+      value = MN_SCROLLBAR_VSTEPPER_A;
+
+  if (!value) /* Haven't found a match */
+    {
+      if (horizontal)
+        check_rectangle.x = widget->allocation.x + border + stepper->width;
+      else
+        check_rectangle.y = widget->allocation.y + border + stepper->height;
+
+      if (gdk_rectangle_intersect (stepper, &check_rectangle, &tmp))
+        if (horizontal)
+          value = MN_SCROLLBAR_HSTEPPER_B;
+        else
+          value = MN_SCROLLBAR_VSTEPPER_B;
+    }
+
+  if (!value) /* Still haven't found a match */
+    {
+      if (horizontal)
+        check_rectangle.x = widget->allocation.x + widget->allocation.width - (stepper->width + border) * 2;
+      else
+        check_rectangle.y = widget->allocation.y + widget->allocation.height - (stepper->height + border) * 2;
+
+      if (gdk_rectangle_intersect (stepper, &check_rectangle, &tmp))
+        if (horizontal)
+          value = MN_SCROLLBAR_HSTEPPER_C;
+        else
+          value = MN_SCROLLBAR_VSTEPPER_C;
+    }
+
+  if (!value) /* STILL haven't found a match */
+    {
+      if (horizontal)
+        check_rectangle.x = widget->allocation.x + widget->allocation.width - 2*border - stepper->width;
+      else
+        check_rectangle.y = widget->allocation.y + widget->allocation.height - 2*border - stepper->height;
+
+      if (gdk_rectangle_intersect (stepper, &check_rectangle, &tmp))
+        if (horizontal)
+          value = MN_SCROLLBAR_HSTEPPER_D;
+        else
+          value = MN_SCROLLBAR_VSTEPPER_D;
+    }
+
+  return value;
+}
+
 static void
 monet_gtk_draw_box (GtkStyle      *style,
                     GdkWindow     *window,
@@ -312,6 +409,27 @@ monet_gtk_draw_box (GtkStyle      *style,
     {
       mn_widget = MN_TOOL_BAR;
     }
+  else if (DETAIL ("hscrollbar") || DETAIL ("vscrollbar"))
+    mn_widget = _scrollbar_get_stepper (widget, area);
+  else if (DETAIL ("slider"))
+    {
+      if (widget && GTK_IS_SCROLLBAR (widget))
+        {
+          mn_widget = MN_VSCROLLBAR_SLIDER;
+          if (_check_orientable_is_horizontal (GTK_ORIENTABLE (widget)))
+            mn_widget = MN_HSCROLLBAR_SLIDER;
+        }
+    }
+  else if (DETAIL ("trough"))
+    {
+      if (widget && GTK_IS_SCROLLBAR (widget))
+        {
+          mn_widget = MN_VSCROLLBAR_BG;
+          if (_check_orientable_is_horizontal (GTK_ORIENTABLE (widget)))
+            mn_widget = MN_HSCROLLBAR_BG;
+        }
+    }
+
 
   if (mn_widget != NULL)
     {
diff --git a/monet/mn-config.h b/monet/mn-config.h
index bba10d8..492a456 100644
--- a/monet/mn-config.h
+++ b/monet/mn-config.h
@@ -69,6 +69,19 @@ typedef struct
 #define MN_MENU_ITEM "menu-item"
 #define MN_MENU_BAR "menu-bar"
 #define MN_TOOL_BAR "tool-bar"
+#define MN_SCOLLBAR_HSTEPPER_A
+#define MN_VSCROLLBAR_SLIDER "scrollbar-vertical-slider"
+#define MN_HSCROLLBAR_SLIDER "scrollbar-horizontal-slider"
+#define MN_VSCROLLBAR_BG "scrollbar-vertical-background"
+#define MN_HSCROLLBAR_BG "scrollbar-horizontal-background"
+#define MN_SCROLLBAR_VSTEPPER_A "scrollbar-vstepper-a"
+#define MN_SCROLLBAR_VSTEPPER_B "scrollbar-vstepper-b"
+#define MN_SCROLLBAR_VSTEPPER_C "scrollbar-vstepper-c"
+#define MN_SCROLLBAR_VSTEPPER_D "scrollbar-vstepper-d"
+#define MN_SCROLLBAR_HSTEPPER_A "scrollbar-hstepper-a"
+#define MN_SCROLLBAR_HSTEPPER_B "scrollbar-hstepper-b"
+#define MN_SCROLLBAR_HSTEPPER_C "scrollbar-hstepper-c"
+#define MN_SCROLLBAR_HSTEPPER_D "scrollbar-hstepper-d"
 
 struct _MnConfig
 {