gtkclist.c 160 KB
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/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball, Josh MacDonald, 
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 * Copyright (C) 1997-1998 Jay Painter <jpaint@serv.net><jpaint@gimp.org>  
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 *
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 * 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
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 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
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 */
#include <stdlib.h>
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#include <string.h>
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#include "../config.h"
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#include "gtkmain.h"
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#include "gtkclist.h"
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#include "gtkbindings.h"
#include <gdk/gdkkeysyms.h>
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/* the number rows memchunk expands at a time */
#define CLIST_OPTIMUM_SIZE 512

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/* the width of the column resize windows */
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#define DRAG_WIDTH  6
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/* minimum allowed width of a column */
#define COLUMN_MIN_WIDTH 5

/* this defigns the base grid spacing */
#define CELL_SPACING 1

/* added the horizontal space at the beginning and end of a row*/
#define COLUMN_INSET 3

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/* used for auto-scrolling */
#define SCROLL_TIME  100

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/* scrollbar spacing class macro */
#define SCROLLBAR_SPACING(w) (GTK_CLIST_CLASS (GTK_OBJECT (w)->klass)->scrollbar_spacing)
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/* gives the top pixel of the given row in context of
 * the clist's voffset */
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#define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \
				    (((row) + 1) * CELL_SPACING) + \
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				    (clist)->voffset)

/* returns the row index from a y pixel location in the 
 * context of the clist's voffset */
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#define ROW_FROM_YPIXEL(clist, y)  (((y) - (clist)->voffset) / \
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				    ((clist)->row_height + CELL_SPACING))

/* gives the left pixel of the given column in context of
 * the clist's hoffset */
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#define COLUMN_LEFT_XPIXEL(clist, colnum)  ((clist)->column[(colnum)].area.x + \
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					    (clist)->hoffset)

/* returns the column index from a x pixel location in the 
 * context of the clist's hoffset */
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static inline gint
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COLUMN_FROM_XPIXEL (GtkCList * clist,
		    gint x)
{
  gint i, cx;

  for (i = 0; i < clist->columns; i++)
    {
      cx = clist->column[i].area.x + clist->hoffset;

      if (x >= (cx - (COLUMN_INSET + CELL_SPACING)) &&
	  x <= (cx + clist->column[i].area.width + COLUMN_INSET))
	return i;
    }

  /* no match */
  return -1;
}

/* returns the top pixel of the given row in the context of
 * the list height */
#define ROW_TOP(clist, row)        (((clist)->row_height + CELL_SPACING) * (row))

/* returns the left pixel of the given column in the context of
 * the list width */
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#define COLUMN_LEFT(clist, colnum) ((clist)->column[(colnum)].area.x)
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/* returns the total height of the list */
#define LIST_HEIGHT(clist)         (((clist)->row_height * ((clist)->rows)) + \
				    (CELL_SPACING * ((clist)->rows + 1)))

/* returns the total width of the list */
#define LIST_WIDTH(clist)          ((clist)->column[(clist)->columns - 1].area.x + \
				    (clist)->column[(clist)->columns - 1].area.width + \
				    COLUMN_INSET + CELL_SPACING)

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#define GTK_CLIST_CLASS_FW(_widget_) GTK_CLIST_CLASS (GTK_OBJECT (_widget_)->klass)


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/* Signals */
enum
{
  SELECT_ROW,
  UNSELECT_ROW,
  CLICK_COLUMN,
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  TOGGLE_FOCUS_ROW,
  SELECT_ALL,
  UNSELECT_ALL,
  UNDO_SELECTION,
  START_SELECTION,
  END_SELECTION,
  TOGGLE_ADD_MODE,
  EXTEND_SELECTION,
  SCROLL_VERTICAL,
  SCROLL_HORIZONTAL,
  ABORT_COLUMN_RESIZE,
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  LAST_SIGNAL
};

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enum
{
  SYNC_REMOVE,
  SYNC_INSERT
};


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typedef void (*GtkCListSignal1) (GtkObject * object,
				 gint arg1,
				 gint arg2,
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				 GdkEvent * arg3,
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				 gpointer data);

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typedef void (*GtkCListSignal2) (GtkObject *object,
				 gpointer data); 

typedef void (*GtkCListSignal3) (GtkObject * object,
				 gint arg1,
				 gpointer data);
typedef void (*GtkCListSignal4) (GtkObject * object,
				 gint arg1,
				 gfloat arg2,
				 gpointer data);
typedef void (*GtkCListSignal5) (GtkObject * object,
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				 gint arg1,
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				 gfloat arg2,
				 gboolean arg3,
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				 gpointer data);


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static void sync_selection (GtkCList * clist,
	                    gint row,
                            gint mode);

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/* GtkCList Methods */
static void gtk_clist_class_init (GtkCListClass * klass);
static void gtk_clist_init (GtkCList * clist);
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static void real_clear (GtkCList * clist);
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/* GtkObject Methods */
static void gtk_clist_destroy (GtkObject * object);
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static void gtk_clist_finalize (GtkObject * object);
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/* GtkWidget Methods */
static void gtk_clist_realize (GtkWidget * widget);
static void gtk_clist_unrealize (GtkWidget * widget);
static void gtk_clist_map (GtkWidget * widget);
static void gtk_clist_unmap (GtkWidget * widget);
static void gtk_clist_draw (GtkWidget * widget,
			    GdkRectangle * area);
static gint gtk_clist_expose (GtkWidget * widget,
			      GdkEventExpose * event);
static gint gtk_clist_button_press (GtkWidget * widget,
				    GdkEventButton * event);
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static gint gtk_clist_button_release (GtkWidget * widget,
				      GdkEventButton * event);
static gint gtk_clist_motion (GtkWidget * widget, 
			      GdkEventMotion * event);
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static void gtk_clist_size_request (GtkWidget * widget,
				    GtkRequisition * requisition);
static void gtk_clist_size_allocate (GtkWidget * widget,
				     GtkAllocation * allocation);
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static gint get_selection_info (GtkCList * clist,
				gint x,
				gint y,
				gint * row,
				gint * column);
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/* GtkContainer Methods */
static void gtk_clist_foreach (GtkContainer * container,
			       GtkCallback callback,
			       gpointer callback_data);

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/* Drawing */
static void draw_row (GtkCList * clist,
		      GdkRectangle * area,
		      gint row,
		      GtkCListRow * clist_row);
static void draw_rows (GtkCList * clist,
		       GdkRectangle * area);

/* Size Allocation */
static void size_allocate_title_buttons (GtkCList * clist);
static void size_allocate_columns (GtkCList * clist);

/* Selection */
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static void toggle_row (GtkCList * clist,
			gint row,
			gint column,
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			GdkEvent * event);
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static void select_row (GtkCList * clist,
			gint row,
			gint column,
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			GdkEvent * event);
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static void unselect_row (GtkCList * clist,
			  gint row,
			  gint column,
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			  GdkEvent * event);
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static void real_select_row (GtkCList * clist,
			     gint row,
			     gint column,
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			     GdkEvent * event);
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static void real_unselect_row (GtkCList * clist,
			       gint row,
			       gint column,
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			       GdkEvent * event);
static void update_extended_selection (GtkCList *clist,
				       gint row);
static GList * selection_find (GtkCList *clist,
			       gint row_number,
			       GList *row_list_element);
static void real_select_all (GtkCList * clist);
static void real_unselect_all (GtkCList * clist);
static void move_vertical (GtkCList *clist,
			   gint row,
			   gfloat align);
static void move_horizontal (GtkCList *clist,
			     gint diff);
static void real_undo_selection (GtkCList * clist);
static void fake_unselect_all (GtkCList *clist,
			       gint row);
static void fake_toggle_row (GtkCList *clist,
			     gint row);
static void resync_selection (GtkCList *clist,
			      GdkEvent *event);
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/* Resize Columns */
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static void draw_xor_line (GtkCList * clist);
static gint new_column_width (GtkCList * clist,
			      gint column,
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			      gint * x,
			      gint * visible);
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static void resize_column (GtkCList * clist,
			   gint column,
			   gint width);
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static void abort_column_resize (GtkCList *clist);
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/* Buttons */
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static void column_button_create (GtkCList * clist,
				  gint column);
static void column_button_clicked (GtkWidget * widget,
				   gpointer data);
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/* Scrollbars */
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static void create_scrollbars (GtkCList * clist);
static void adjust_scrollbars (GtkCList * clist);
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static void check_exposures   (GtkCList * clist);
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static void vadjustment_changed (GtkAdjustment * adjustment,
				 gpointer data);
static void vadjustment_value_changed (GtkAdjustment * adjustment,
				       gpointer data);
static void hadjustment_changed (GtkAdjustment * adjustment,
				 gpointer data);
static void hadjustment_value_changed (GtkAdjustment * adjustment,
				       gpointer data);
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/* Memory Allocation/Distruction Routines */
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static GtkCListColumn *columns_new (GtkCList * clist);
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static void column_title_new (GtkCList * clist,
			      gint column,
			      gchar * title);
static void columns_delete (GtkCList * clist);
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static GtkCListRow *row_new (GtkCList * clist);
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static void row_delete (GtkCList * clist,
			GtkCListRow * clist_row);
static void cell_empty (GtkCList * clist,
			GtkCListRow * clist_row,
			gint column);
static void cell_set_text (GtkCList * clist,
			   GtkCListRow * clist_row,
			   gint column,
			   gchar * text);
static void cell_set_pixmap (GtkCList * clist,
			     GtkCListRow * clist_row,
			     gint column,
			     GdkPixmap * pixmap,
			     GdkBitmap * mask);
static void cell_set_pixtext (GtkCList * clist,
			      GtkCListRow * clist_row,
			      gint column,
			      gchar * text,
			      guint8 spacing,
			      GdkPixmap * pixmap,
			      GdkBitmap * mask);
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/* Focus handling */
static void gtk_clist_draw_focus (GtkWidget *widget);
static gint gtk_clist_focus_in   (GtkWidget     *widget,
				  GdkEventFocus *event);
static gint gtk_clist_focus_out  (GtkWidget     *widget,
				  GdkEventFocus *event);
static gint gtk_clist_focus      (GtkContainer     *container,
				  GtkDirectionType  direction);
static void gtk_clist_set_focus_child (GtkContainer *container,
				       GtkWidget    *child);
static gint gtk_clist_key_press  (GtkWidget   *widget,
				  GdkEventKey *event);

/* Selection handling */
static void set_anchor (GtkCList *clist,
			gboolean  add_mode,
			gint      anchor,
			gint      undo_anchor);
static void start_selection (GtkCList *clist);
static void end_selection (GtkCList *clist);

static void toggle_add_mode (GtkCList *clist);
static void toggle_focus_row (GtkCList *clist);
static void move_focus_row (GtkCList      *clist,
			    GtkScrollType  scroll_type,
			    gfloat         position);
static void scroll_horizontal (GtkCList      *clist,
			       GtkScrollType  scroll_type,
			       gfloat         position);
static void scroll_vertical (GtkCList      *clist,
			     GtkScrollType  scroll_type,
			     gfloat         position);
static void extend_selection (GtkCList      *clist,
			      GtkScrollType  scroll_type,
			      gfloat         position,
			      gboolean       auto_start_selection);

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/* Sorting */
static gint default_compare (GtkCList     *clist,
			     gconstpointer row1,
			     gconstpointer row2);
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static GList * gtk_clist_merge (GtkCList *clist,
				GList    *a,
				GList    *b);
static GList * gtk_clist_mergesort (GtkCList *clist,
				    GList    *list,
				    gint      num);
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/* Fill in data after widget is realized and has style */
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static void add_style_data (GtkCList * clist);

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static GtkContainerClass *parent_class = NULL;
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static guint clist_signals[LAST_SIGNAL] = {0};
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GtkType
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gtk_clist_get_type (void)
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{
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  static GtkType clist_type = 0;
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  if (!clist_type)
    {
      GtkTypeInfo clist_info =
      {
	"GtkCList",
	sizeof (GtkCList),
	sizeof (GtkCListClass),
	(GtkClassInitFunc) gtk_clist_class_init,
	(GtkObjectInitFunc) gtk_clist_init,
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	/* reserved_1 */ NULL,
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	/* reserved_2 */ NULL,
	(GtkClassInitFunc) NULL,
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      };

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      clist_type = gtk_type_unique (GTK_TYPE_CONTAINER, &clist_info);
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    }

  return clist_type;
}

static void
gtk_clist_class_init (GtkCListClass * klass)
{
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;

  object_class = (GtkObjectClass *) klass;
  widget_class = (GtkWidgetClass *) klass;
  container_class = (GtkContainerClass *) klass;

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  parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
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  clist_signals[SELECT_ROW] =
    gtk_signal_new ("select_row",
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		    GTK_RUN_FIRST,
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		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, select_row),
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		    gtk_marshal_NONE__INT_INT_POINTER,
		    GTK_TYPE_NONE, 3,
		    GTK_TYPE_INT,
		    GTK_TYPE_INT,
		    GTK_TYPE_GDK_EVENT);
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  clist_signals[UNSELECT_ROW] =
    gtk_signal_new ("unselect_row",
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		    GTK_RUN_FIRST,
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		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, unselect_row),
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		    gtk_marshal_NONE__INT_INT_POINTER,
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	    GTK_TYPE_NONE, 3, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_GDK_EVENT);
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  clist_signals[CLICK_COLUMN] =
    gtk_signal_new ("click_column",
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		    GTK_RUN_FIRST,
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		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, click_column),
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		    gtk_marshal_NONE__INT,
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		    GTK_TYPE_NONE, 1, GTK_TYPE_INT);

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  clist_signals[TOGGLE_FOCUS_ROW] =
    gtk_signal_new ("toggle_focus_row",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, toggle_focus_row),
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                    gtk_marshal_NONE__NONE,
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                    GTK_TYPE_NONE, 0);
  clist_signals[SELECT_ALL] =
    gtk_signal_new ("select_all",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, select_all),
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                    gtk_marshal_NONE__NONE,
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                    GTK_TYPE_NONE, 0);
  clist_signals[UNSELECT_ALL] =
    gtk_signal_new ("unselect_all",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, unselect_all),
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                    gtk_marshal_NONE__NONE,
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                    GTK_TYPE_NONE, 0);
  clist_signals[UNDO_SELECTION] =
    gtk_signal_new ("undo_selection",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, undo_selection),
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		    gtk_marshal_NONE__NONE,
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		    GTK_TYPE_NONE, 0);
  clist_signals[START_SELECTION] =
    gtk_signal_new ("start_selection",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, start_selection),
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		    gtk_marshal_NONE__NONE,
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		    GTK_TYPE_NONE, 0);
  clist_signals[END_SELECTION] =
    gtk_signal_new ("end_selection",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, end_selection),
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		    gtk_marshal_NONE__NONE,
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		    GTK_TYPE_NONE, 0);
  clist_signals[TOGGLE_ADD_MODE] =
    gtk_signal_new ("toggle_add_mode",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkCListClass, toggle_add_mode),
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		    gtk_marshal_NONE__NONE,
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		    GTK_TYPE_NONE, 0);
  clist_signals[EXTEND_SELECTION] =
    gtk_signal_new ("extend_selection",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, extend_selection),
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                    gtk_marshal_NONE__ENUM_FLOAT_BOOL,
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                    GTK_TYPE_NONE, 3,
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		    GTK_TYPE_SCROLL_TYPE, GTK_TYPE_FLOAT, GTK_TYPE_BOOL);
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  clist_signals[SCROLL_VERTICAL] =
    gtk_signal_new ("scroll_vertical",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, scroll_vertical),
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                    gtk_marshal_NONE__ENUM_FLOAT,
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                    GTK_TYPE_NONE, 2, GTK_TYPE_SCROLL_TYPE, GTK_TYPE_FLOAT);
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  clist_signals[SCROLL_HORIZONTAL] =
    gtk_signal_new ("scroll_horizontal",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, scroll_horizontal),
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                    gtk_marshal_NONE__ENUM_FLOAT,
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                    GTK_TYPE_NONE, 2, GTK_TYPE_SCROLL_TYPE, GTK_TYPE_FLOAT);
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  clist_signals[ABORT_COLUMN_RESIZE] =
    gtk_signal_new ("abort_column_resize",
                    GTK_RUN_LAST | GTK_RUN_ACTION,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkCListClass, abort_column_resize),
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                    gtk_marshal_NONE__NONE,
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                    GTK_TYPE_NONE, 0);


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  gtk_object_class_add_signals (object_class, clist_signals, LAST_SIGNAL);

  object_class->destroy = gtk_clist_destroy;
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  object_class->finalize = gtk_clist_finalize;
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  widget_class->realize = gtk_clist_realize;
  widget_class->unrealize = gtk_clist_unrealize;
  widget_class->map = gtk_clist_map;
  widget_class->unmap = gtk_clist_unmap;
  widget_class->draw = gtk_clist_draw;
  widget_class->button_press_event = gtk_clist_button_press;
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  widget_class->button_release_event = gtk_clist_button_release;
  widget_class->motion_notify_event = gtk_clist_motion;
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  widget_class->expose_event = gtk_clist_expose;
  widget_class->size_request = gtk_clist_size_request;
  widget_class->size_allocate = gtk_clist_size_allocate;
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  widget_class->key_press_event = gtk_clist_key_press;
  widget_class->focus_in_event = gtk_clist_focus_in;
  widget_class->focus_out_event = gtk_clist_focus_out;
  widget_class->draw_focus = gtk_clist_draw_focus;
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  /* container_class->add = NULL; use the default GtkContainerClass warning */
  /* container_class->remove = NULL; use the default GtkContainerClass warning */
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  container_class->foreach = gtk_clist_foreach;
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  container_class->focus = gtk_clist_focus;
  container_class->set_focus_child = gtk_clist_set_focus_child;
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  klass->select_row = real_select_row;
  klass->unselect_row = real_unselect_row;
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  klass->undo_selection = real_undo_selection;
  klass->resync_selection = resync_selection;
  klass->selection_find = selection_find;
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  klass->click_column = NULL;
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  klass->draw_row = draw_row;
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  klass->clear = real_clear;
  klass->select_all = real_select_all;
  klass->unselect_all = real_unselect_all;
  klass->fake_unselect_all = fake_unselect_all;
  klass->scroll_horizontal = scroll_horizontal;
  klass->scroll_vertical = scroll_vertical;
  klass->extend_selection = extend_selection;
  klass->toggle_focus_row = toggle_focus_row;
  klass->toggle_add_mode = toggle_add_mode;
  klass->start_selection = start_selection;
  klass->end_selection = end_selection;
  klass->abort_column_resize = abort_column_resize;
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  klass->scrollbar_spacing = 5;
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  {
    GtkBindingSet *binding_set;

    binding_set = gtk_binding_set_by_class (klass);
    gtk_binding_entry_add_signal (binding_set, GDK_Up, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Down, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Home, GDK_CONTROL_MASK,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_End, GDK_CONTROL_MASK,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 1.0);

    gtk_binding_entry_add_signal (binding_set, GDK_Up, GDK_SHIFT_MASK,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_Down, GDK_SHIFT_MASK,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, GDK_SHIFT_MASK,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, GDK_SHIFT_MASK,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_Home,
				  GDK_SHIFT_MASK | GDK_CONTROL_MASK,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_End,
				  GDK_SHIFT_MASK | GDK_CONTROL_MASK,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 1.0, GTK_TYPE_BOOL, TRUE);


    gtk_binding_entry_add_signal (binding_set, GDK_Left, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Right, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Home, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_End, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 1.0);


    gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
				  "undo_selection", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
				  "abort_column_resize", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
				  "toggle_focus_row", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK,
				  "toggle_add_mode", 0);
    gtk_binding_entry_add_signal (binding_set, '/', GDK_CONTROL_MASK,
				  "select_all", 0);
    gtk_binding_entry_add_signal (binding_set, '\\', GDK_CONTROL_MASK,
				  "unselect_all", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_Shift_L,
				  GDK_RELEASE_MASK | GDK_SHIFT_MASK,
				  "end_selection", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_Shift_R,
				  GDK_RELEASE_MASK | GDK_SHIFT_MASK,
				  "end_selection", 0);
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    gtk_binding_entry_add_signal (binding_set, GDK_Shift_L,
				  GDK_RELEASE_MASK | GDK_SHIFT_MASK |
				  GDK_CONTROL_MASK,
				  "end_selection", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_Shift_R,
				  GDK_RELEASE_MASK | GDK_SHIFT_MASK |
				  GDK_CONTROL_MASK,
				  "end_selection", 0);
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  }

  /*
  {
    GtkBindingSet *binding_set;

    binding_set = gtk_binding_set_by_class (klass);
    gtk_binding_entry_add_signal (binding_set, GDK_Up, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Down, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Home, GDK_CONTROL_MASK,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_End, GDK_CONTROL_MASK,
				  "scroll_vertical", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0);

    gtk_binding_entry_add_signal (binding_set, GDK_KP_Up, 0,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Down, 0,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Page_Up, 0,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Page_Down, 0,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_PAGE_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Home, 0,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0.0, GTK_TYPE_BOOL, TRUE);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_End, 0,
				  "extend_selection", 3,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 1.0, GTK_TYPE_BOOL, TRUE);

    gtk_binding_entry_add_signal (binding_set, GDK_Left, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Right, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_Home, 0,
				  "scroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 0.0);
    gtk_binding_entry_add_signal (binding_set, GDK_End, 0,
				  "sroll_horizontal", 2,
				  GTK_TYPE_ENUM, GTK_SCROLL_JUMP,
                                  GTK_TYPE_FLOAT, 1.0);

    gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
				  "undo_selection", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
				  "abort_column_resize", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
				  "toggle_focus_row", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
				  "toggle_add_mode", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0,
				  "select_all", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0,
				  "unselect_all", 0);
    gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0,
				  "end_selection", 0);
  }
  */
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}

static void
gtk_clist_init (GtkCList * clist)
{
  clist->flags = 0;

  GTK_WIDGET_UNSET_FLAGS (clist, GTK_NO_WINDOW);
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  GTK_CLIST_SET_FLAG (clist, CLIST_FROZEN);
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  clist->row_mem_chunk = NULL;
  clist->cell_mem_chunk = NULL;

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  clist->rows = 0;
  clist->row_center_offset = 0;
  clist->row_height = 0;
  clist->row_list = NULL;
  clist->row_list_end = NULL;

  clist->columns = 0;

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  clist->title_window = NULL;
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  clist->column_title_area.x = 0;
  clist->column_title_area.y = 0;
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  clist->column_title_area.width = 1;
  clist->column_title_area.height = 1;
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  clist->clist_window = NULL;
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  clist->clist_window_width = 1;
  clist->clist_window_height = 1;
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  clist->hoffset = 0;
  clist->voffset = 0;

  clist->shadow_type = GTK_SHADOW_IN;
  clist->hscrollbar_policy = GTK_POLICY_ALWAYS;
  clist->vscrollbar_policy = GTK_POLICY_ALWAYS;

  clist->cursor_drag = NULL;
  clist->xor_gc = NULL;
  clist->fg_gc = NULL;
  clist->bg_gc = NULL;
  clist->x_drag = 0;

  clist->selection_mode = GTK_SELECTION_SINGLE;
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  clist->selection = NULL;
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  clist->selection_end = NULL;
  clist->undo_selection = NULL;
  clist->undo_unselection = NULL;

  GTK_WIDGET_SET_FLAGS (clist, GTK_CAN_FOCUS);
  GTK_CLIST_SET_FLAG (clist, CLIST_CHILD_HAS_FOCUS);
  clist->focus_row = -1;
  clist->undo_anchor = -1;

  clist->anchor = -1;
  clist->anchor_state = GTK_STATE_SELECTED;
  clist->drag_pos = -1;
  clist->htimer = 0;
  clist->vtimer = 0;
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  clist->compare = default_compare;
  clist->sort_type = GTK_SORT_ASCENDING;
  clist->sort_column = 0;
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}

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/* Constructors */
void
gtk_clist_construct (GtkCList * clist,
		     gint columns,
		     gchar *titles[])
{
  int i;

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  g_return_if_fail (clist != NULL);
  g_return_if_fail (GTK_IS_CLIST (clist));
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  g_return_if_fail (GTK_CLIST_CONSTRUCTED (clist) == FALSE);
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  GTK_CLIST_SET_FLAG (clist, CLIST_CONSTRUCTED);
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  /* initalize memory chunks, if this has not been done by any
   * possibly derived widget
   */
  if (!clist->row_mem_chunk)
    clist->row_mem_chunk = g_mem_chunk_new ("clist row mem chunk",
					    sizeof (GtkCListRow),
					    sizeof (GtkCListRow) * CLIST_OPTIMUM_SIZE, 
					    G_ALLOC_AND_FREE);

  if (!clist->cell_mem_chunk)
    clist->cell_mem_chunk = g_mem_chunk_new ("clist cell mem chunk",
					     sizeof (GtkCell) * columns,
					     sizeof (GtkCell) * columns * CLIST_OPTIMUM_SIZE, 
					     G_ALLOC_AND_FREE);
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  /* set number of columns, allocate memory */
  clist->columns = columns;
  clist->column = columns_new (clist);

  /* there needs to be at least one column button 
   * because there is alot of code that will break if it
   * isn't there*/
  column_button_create (clist, 0);

  /* create scrollbars */
  create_scrollbars (clist);

  if (titles)
    {
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      GTK_CLIST_SET_FLAG (clist, CLIST_SHOW_TITLES);
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      for (i = 0; i < columns; i++)
	gtk_clist_set_column_title (clist, i, titles[i]);
    }
  else
    {
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      GTK_CLIST_UNSET_FLAG (clist, CLIST_SHOW_TITLES);
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    }
}

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/*
 * GTKCLIST PUBLIC INTERFACE
 *   gtk_clist_new_with_titles
 *   gtk_clist_new
 */
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GtkWidget *
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gtk_clist_new_with_titles (gint columns,
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			   gchar * titles[])
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{
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  GtkWidget *widget;
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  g_return_val_if_fail (titles != NULL, NULL);
  
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  widget = gtk_type_new (GTK_TYPE_CLIST);
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  gtk_clist_construct (GTK_CLIST (widget), columns, titles);
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  return widget;
}

GtkWidget *
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gtk_clist_new (gint columns)
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{
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  GtkCList *clist;

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  if (columns < 1)
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    return NULL;

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  clist = gtk_type_new (GTK_TYPE_CLIST);
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  gtk_clist_construct (clist, columns, NULL);
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  return GTK_WIDGET (clist);
}

void
gtk_clist_set_border (GtkCList * clist,
		      GtkShadowType border)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  clist->shadow_type = border;

  if (GTK_WIDGET_VISIBLE (clist))
    gtk_widget_queue_resize (GTK_WIDGET (clist));
}

void
gtk_clist_set_selection_mode (GtkCList * clist,
			      GtkSelectionMode mode)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));

  if (mode == clist->selection_mode)
    return;
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  clist->selection_mode = mode;
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  clist->anchor = -1;
  clist->anchor_state = GTK_STATE_SELECTED;
  clist->drag_pos = -1;
  clist->undo_anchor = clist->focus_row;

  g_list_free (clist->undo_selection);
  g_list_free (clist->undo_unselection);
  clist->undo_selection = NULL;
  clist->undo_unselection = NULL;

  switch (mode)
    {
    case GTK_SELECTION_MULTIPLE:
    case GTK_SELECTION_EXTENDED:
      return;
    case GTK_SELECTION_BROWSE:
    case GTK_SELECTION_SINGLE:
      gtk_clist_unselect_all (clist);
      break;
    }
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}

void
gtk_clist_freeze (GtkCList * clist)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  GTK_CLIST_SET_FLAG (clist, CLIST_FROZEN);
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}

void
gtk_clist_thaw (GtkCList * clist)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  GTK_CLIST_UNSET_FLAG (clist, CLIST_FROZEN);
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  adjust_scrollbars (clist);
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  draw_rows (clist, NULL);
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}

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void
gtk_clist_column_titles_show (GtkCList * clist)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (!GTK_CLIST_SHOW_TITLES (clist))
    {
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      GTK_CLIST_SET_FLAG (clist, CLIST_SHOW_TITLES);
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      if (clist->title_window)
	      gdk_window_show (clist->title_window);
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      gtk_widget_queue_resize (GTK_WIDGET (clist));
    }
}

void 
gtk_clist_column_titles_hide (GtkCList * clist)
{
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  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (GTK_CLIST_SHOW_TITLES (clist))
    {
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      GTK_CLIST_UNSET_FLAG (clist, CLIST_SHOW_TITLES);
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      if (clist->title_window)
	      gdk_window_hide (clist->title_window);
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      gtk_widget_queue_resize (GTK_WIDGET (clist));
    }
}
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void
gtk_clist_column_title_active (GtkCList * clist,
			       gint column)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (column < 0 || column >= clist->columns)
    return;

  if (!GTK_WIDGET_SENSITIVE (clist->column[column].button) ||
      !GTK_WIDGET_CAN_FOCUS (clist->column[column].button))
    {
      GTK_WIDGET_SET_FLAGS (clist->column[column].button, GTK_SENSITIVE | GTK_CAN_FOCUS);
      if (GTK_WIDGET_VISIBLE (clist))
	gtk_widget_queue_draw (clist->column[column].button);
    }
}

void
gtk_clist_column_title_passive (GtkCList * clist,
				gint column)
{
  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (column < 0 || column >= clist->columns)
    return;

  if (GTK_WIDGET_SENSITIVE (clist->column[column].button) ||
      GTK_WIDGET_CAN_FOCUS (clist->column[column].button))
    {
      GTK_WIDGET_UNSET_FLAGS (clist->column[column].button, GTK_SENSITIVE | GTK_CAN_FOCUS);
      if (GTK_WIDGET_VISIBLE (clist))
	gtk_widget_queue_draw (clist->column[column].button);
    }
}

void
gtk_clist_column_titles_active (GtkCList * clist)
{
  gint i;

  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  for (i = 0; i < clist->columns; i++)
    if (clist->column[i].button)
      gtk_clist_column_title_active (clist, i);
}

void
gtk_clist_column_titles_passive (GtkCList * clist)
{
  gint i;

  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  for (i = 0; i < clist->columns; i++)
    if (clist->column[i].button)
      gtk_clist_column_title_passive (clist, i);
}

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void
gtk_clist_set_column_title (GtkCList * clist,
			    gint column,
			    gchar * title)
{
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  gint new_button = 0;
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  GtkWidget *old_widget;
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  GtkWidget *alignment = NULL;
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  GtkWidget *label;

  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (column < 0 || column >= clist->columns)
    return;

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  /* if the column button doesn't currently exist,
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   * it has to be created first */
  if (!clist->column[column].button)
    {
      column_button_create (clist, column);
      new_button = 1;
    }

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  column_title_new (clist, column, title);
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  /* remove and destroy the old widget */
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  old_widget = GTK_BIN (clist->column[column].button)->child;
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  if (old_widget)
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    gtk_container_remove (GTK_CONTAINER (clist->column[column].button), old_widget);
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  /* create new alignment based no column justification */
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  switch (clist->column[column].justification)
    {
    case GTK_JUSTIFY_LEFT:
      alignment = gtk_alignment_new (0.0, 0.5, 0.0, 0.0);
      break;

    case GTK_JUSTIFY_RIGHT:
      alignment = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
      break;

    case GTK_JUSTIFY_CENTER:
      alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
      break;

    case GTK_JUSTIFY_FILL:
      alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
      break;
    }

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  label = gtk_label_new (clist->column[column].title);
  gtk_container_add (GTK_CONTAINER (alignment), label);
  gtk_container_add (GTK_CONTAINER (clist->column[column].button), alignment);
  gtk_widget_show (label);
  gtk_widget_show (alignment);

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  /* if this button didn't previously exist, then the
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   * column button positions have to be re-computed */
  if (GTK_WIDGET_VISIBLE (clist) && new_button)
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    size_allocate_title_buttons (clist);
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}

void
gtk_clist_set_column_widget (GtkCList * clist,
			     gint column,
			     GtkWidget * widget)
{
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  gint new_button = 0;
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  GtkWidget *old_widget;

  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (column < 0 || column >= clist->columns)
    return;

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  /* if the column button doesn't currently exist,
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   * it has to be created first */
  if (!clist->column[column].button)
    {
      column_button_create (clist, column);
      new_button = 1;
    }

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  column_title_new (clist, column, NULL);
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  /* remove and destroy the old widget */
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  old_widget = GTK_BIN (clist->column[column].button)->child;
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  if (old_widget)
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    gtk_container_remove (GTK_CONTAINER (clist->column[column].button), old_widget);
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  /* add and show the widget */
  if (widget)
    {
      gtk_container_add (GTK_CONTAINER (clist->column[column].button), widget);
      gtk_widget_show (widget);
    }
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  /* if this button didn't previously exist, then the
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   * column button positions have to be re-computed */
  if (GTK_WIDGET_VISIBLE (clist) && new_button)
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    size_allocate_title_buttons (clist);
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}

void
gtk_clist_set_column_justification (GtkCList * clist,
				    gint column,
				    GtkJustification justification)
{
  GtkWidget *alignment;

  g_return_if_fail (clist != NULL);
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  g_return_if_fail (GTK_IS_CLIST (clist));
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  if (column < 0 || column >= clist->columns)
    return;

  clist->column[column].justification = justification;

  /* change the alinment of the button title if it's not a
   * custom widget */
  if (clist->column[column].title)
    {