1 files changed, 355 insertions, 0 deletions

diff --git a/gtk/gtkhpaned.c b/gtk/gtkhpaned.c
new file mode 100644
index 000000000..23c50961e
--- /dev/null
+++ b/gtk/gtkhpaned.c
@@ -0,0 +1,355 @@
+/* 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 "gtkhpaned.h"
+#include "gtkmain.h"
+#include "gtksignal.h"
+
+static void gtk_hpaned_class_init       (GtkHPanedClass *klass);
+static void gtk_hpaned_init             (GtkHPaned      *hpaned);
+static void gtk_hpaned_size_request     (GtkWidget      *widget,
+					 GtkRequisition *requisition);
+static void gtk_hpaned_size_allocate    (GtkWidget          *widget,
+					 GtkAllocation      *allocation);
+static void gtk_hpaned_draw             (GtkWidget    *widget,
+					 GdkRectangle *area);
+static void gtk_hpaned_xor_line         (GtkPaned *paned);
+static gint gtk_hpaned_button_press     (GtkWidget *widget,
+					 GdkEventButton *event);
+static gint gtk_hpaned_button_release   (GtkWidget *widget,
+					 GdkEventButton *event);
+static gint gtk_hpaned_motion           (GtkWidget *widget,
+					 GdkEventMotion *event);
+
+guint
+gtk_hpaned_get_type ()
+{
+  static guint hpaned_type = 0;
+
+  if (!hpaned_type)
+    {
+      GtkTypeInfo hpaned_info =
+      {
+	"GtkHPaned",
+	sizeof (GtkHPaned),
+	sizeof (GtkHPanedClass),
+	(GtkClassInitFunc) gtk_hpaned_class_init,
+	(GtkObjectInitFunc) gtk_hpaned_init,
+	(GtkArgFunc) NULL,
+      };
+
+      hpaned_type = gtk_type_unique (gtk_paned_get_type (), &hpaned_info);
+    }
+
+  return hpaned_type;
+}
+
+static void
+gtk_hpaned_class_init (GtkHPanedClass *class)
+{
+  GtkWidgetClass *widget_class;
+
+  widget_class = (GtkWidgetClass*) class;
+
+  widget_class->size_request = gtk_hpaned_size_request;
+  widget_class->size_allocate = gtk_hpaned_size_allocate;
+  widget_class->draw = gtk_hpaned_draw;
+  widget_class->button_press_event = gtk_hpaned_button_press;
+  widget_class->button_release_event = gtk_hpaned_button_release;
+  widget_class->motion_notify_event = gtk_hpaned_motion;
+}
+
+static void
+gtk_hpaned_init (GtkHPaned *hpaned)
+{
+}
+
+GtkWidget*
+gtk_hpaned_new ()
+{
+  GtkHPaned *hpaned;
+
+  hpaned = gtk_type_new (gtk_hpaned_get_type ());
+
+  return GTK_WIDGET (hpaned);
+}
+
+static void
+gtk_hpaned_size_request (GtkWidget      *widget,
+			 GtkRequisition *requisition)
+{
+  GtkPaned *paned;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_HPANED (widget));
+  g_return_if_fail (requisition != NULL);
+
+  paned = GTK_PANED (widget);
+  requisition->width = 0;
+  requisition->height = 0;
+
+  if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
+    {
+      gtk_widget_size_request (paned->child1, &paned->child1->requisition);
+
+      requisition->height = paned->child1->requisition.height;
+      requisition->width = paned->child1->requisition.width;
+    }
+
+  if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
+    {
+      gtk_widget_size_request (paned->child2, &paned->child2->requisition);
+
+      requisition->height = MAX(requisition->height,
+				paned->child2->requisition.height);
+      requisition->width += paned->child2->requisition.width;
+    }
+
+  requisition->width += GTK_CONTAINER (paned)->border_width * 2 + paned->gutter_size;
+  requisition->height += GTK_CONTAINER (paned)->border_width * 2;
+}
+
+static void
+gtk_hpaned_size_allocate (GtkWidget     *widget,
+			  GtkAllocation *allocation)
+{
+  GtkPaned *paned;
+  GtkAllocation child1_allocation;
+  GtkAllocation child2_allocation;
+  guint16 border_width;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_HPANED (widget));
+  g_return_if_fail (allocation != NULL);
+
+  widget->allocation = *allocation;
+
+  paned = GTK_PANED (widget);
+  border_width = GTK_CONTAINER (paned)->border_width;
+
+  if (!paned->position_set)
+    {
+      if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
+	paned->child1_size = paned->child1->requisition.width;
+      else
+	paned->child1_size = 0;
+    }
+
+  /* Move the handle first so we don't get extra expose events */
+
+  paned->handle_xpos = allocation->x + paned->child1_size + border_width + paned->gutter_size / 2 - paned->handle_size / 2;
+  paned->handle_ypos = allocation->y + allocation->height - border_width - 2*paned->handle_size;
+
+  if (GTK_WIDGET_REALIZED (widget))
+    {
+      gdk_window_move (paned->handle, paned->handle_xpos, paned->handle_ypos);
+      gdk_window_raise (paned->handle);
+    }
+
+  if (GTK_WIDGET_MAPPED (widget))
+    {
+      gdk_window_clear_area (widget->window,
+			     paned->groove_rectangle.x,
+			     paned->groove_rectangle.y,
+			     paned->groove_rectangle.width,
+			     paned->groove_rectangle.height);
+    }
+  
+  child1_allocation.height = child2_allocation.height = allocation->height - border_width * 2;
+  child1_allocation.width = paned->child1_size;
+  child1_allocation.x = allocation->x + border_width;
+  child1_allocation.y = child2_allocation.y = allocation->y + border_width;
+  
+  paned->groove_rectangle.x = child1_allocation.x 
+    + child1_allocation.width + paned->gutter_size / 2 - 1;
+  paned->groove_rectangle.y = allocation->y;
+  paned->groove_rectangle.width = 2;
+  paned->groove_rectangle.height = allocation->height;
+      
+  child2_allocation.x = paned->groove_rectangle.x + paned->gutter_size / 2 + 1;
+  child2_allocation.width = allocation->x + allocation->width
+    - child2_allocation.x - border_width;
+  
+  /* Now allocate the childen, making sure, when resizing not to
+   * overlap the windows */
+  if (GTK_WIDGET_MAPPED(widget) &&
+      paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
+      paned->child1->allocation.width < child1_allocation.width)
+    {
+      if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
+	gtk_widget_size_allocate (paned->child2, &child2_allocation);
+      gtk_widget_size_allocate (paned->child1, &child1_allocation);      
+    }
+  else
+    {
+      if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
+	gtk_widget_size_allocate (paned->child1, &child1_allocation);
+      if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
+	gtk_widget_size_allocate (paned->child2, &child2_allocation);
+    }
+}
+
+static void
+gtk_hpaned_draw (GtkWidget    *widget,
+		GdkRectangle *area)
+{
+  GtkPaned *paned;
+  GdkRectangle child_area;
+  guint16 border_width;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_PANED (widget));
+
+  if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
+    {
+      paned = GTK_PANED (widget);
+      border_width = GTK_CONTAINER (paned)->border_width;
+
+      if (paned->child1 &&
+	  gtk_widget_intersect (paned->child1, area, &child_area))
+        gtk_widget_draw (paned->child1, &child_area);
+      if (paned->child2 &&
+	  gtk_widget_intersect (paned->child2, area, &child_area))
+        gtk_widget_draw (paned->child2, &child_area);
+
+      gdk_draw_line (widget->window,
+		     widget->style->dark_gc[widget->state],
+		     widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2 - 1,
+		     widget->allocation.y,
+		     widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2 - 1,
+		     widget->allocation.y + widget->allocation.height - 1);
+      gdk_draw_line (widget->window,
+		     widget->style->light_gc[widget->state],
+		     widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2,
+		     widget->allocation.y,
+		     widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2,
+		     widget->allocation.y + widget->allocation.height - 1);
+    }
+}
+
+static void
+gtk_hpaned_xor_line (GtkPaned *paned)
+{
+  GtkWidget *widget;
+  GdkGCValues values;
+  guint16 xpos;
+
+  widget = GTK_WIDGET(paned);
+
+  if (!paned->xor_gc)
+    {
+      values.foreground = widget->style->white;
+      values.function = GDK_XOR;
+      values.subwindow_mode = GDK_INCLUDE_INFERIORS;
+      paned->xor_gc = gdk_gc_new_with_values (widget->window,
+					      &values,
+					      GDK_GC_FOREGROUND |
+					      GDK_GC_FUNCTION |
+					      GDK_GC_SUBWINDOW);
+    }
+
+  xpos = widget->allocation.x + paned->child1_size
+    + GTK_CONTAINER(paned)->border_width + paned->gutter_size / 2;
+
+  gdk_draw_line (widget->window, paned->xor_gc,
+		 xpos,
+		 widget->allocation.y,
+		 xpos,
+		 widget->allocation.y + widget->allocation.height - 1);
+}
+
+static gint
+gtk_hpaned_button_press (GtkWidget *widget, GdkEventButton *event)
+{
+  GtkPaned *paned;
+
+  g_return_val_if_fail (widget != NULL,FALSE);
+  g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
+
+  paned = GTK_PANED (widget);
+
+  if (!paned->in_drag &&
+      (event->window == paned->handle) && (event->button == 1))
+    {
+      paned->in_drag = TRUE;
+      /* We need a server grab here, not gtk_grab_add(), since
+       * we don't want to pass events on to the widget's children */
+      gdk_pointer_grab (paned->handle, FALSE,
+			GDK_POINTER_MOTION_HINT_MASK 
+			| GDK_BUTTON1_MOTION_MASK 
+			| GDK_BUTTON_RELEASE_MASK,
+			NULL, NULL, event->time);
+      paned->child1_size += event->x - paned->handle_size / 2;
+      paned->child1_size = CLAMP (paned->child1_size, 0,
+                                  widget->allocation.width - paned->gutter_size
+                                  - 2 * GTK_CONTAINER (paned)->border_width);
+      gtk_hpaned_xor_line (paned);
+    }
+
+  return TRUE;
+}
+
+static gint
+gtk_hpaned_button_release (GtkWidget *widget, GdkEventButton *event)
+{
+  GtkPaned *paned;
+
+  g_return_val_if_fail (widget != NULL,FALSE);
+  g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
+
+  paned = GTK_PANED (widget);
+
+  if (paned->in_drag && (event->button == 1))
+    {
+      gtk_hpaned_xor_line (paned);
+      paned->in_drag = FALSE;
+      paned->position_set = TRUE;
+      gdk_pointer_ungrab (event->time);
+      gtk_widget_queue_resize (GTK_WIDGET (paned));
+    }
+
+  return TRUE;
+}
+
+static gint
+gtk_hpaned_motion (GtkWidget *widget, GdkEventMotion *event)
+{
+  GtkPaned *paned;
+  gint x;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
+
+  if (event->is_hint || event->window != widget->window)
+    gtk_widget_get_pointer(widget, &x, NULL);
+  else
+    x = event->x;
+
+  paned = GTK_PANED (widget);
+
+  if (paned->in_drag)
+    {
+      gtk_hpaned_xor_line (paned);
+      paned->child1_size = x - GTK_CONTAINER (paned)->border_width - paned->gutter_size / 2;
+      paned->child1_size = CLAMP (paned->child1_size, 0,
+                                  widget->allocation.width - paned->gutter_size
+                                  - 2 * GTK_CONTAINER (paned)->border_width);
+      gtk_hpaned_xor_line (paned);
+    }
+
+  return TRUE;
+}