gtktable.c

gtk是linux一款强大的夸平台的图形化开发工具

/* 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include "gtktable.h"

enum
{
  ARG_0,
  ARG_N_ROWS,
  ARG_N_COLUMNS,
  ARG_COLUMN_SPACING,
  ARG_ROW_SPACING,
  ARG_HOMOGENEOUS
};

enum
{
  CHILD_ARG_0,
  CHILD_ARG_LEFT_ATTACH,
  CHILD_ARG_RIGHT_ATTACH,
  CHILD_ARG_TOP_ATTACH,
  CHILD_ARG_BOTTOM_ATTACH,
  CHILD_ARG_X_OPTIONS,
  CHILD_ARG_Y_OPTIONS,
  CHILD_ARG_X_PADDING,
  CHILD_ARG_Y_PADDING
};
  

static void gtk_table_class_init    (GtkTableClass  *klass);
static void gtk_table_init	    (GtkTable	    *table);
static void gtk_table_finalize	    (GtkObject	    *object);
static void gtk_table_map	    (GtkWidget	    *widget);
static void gtk_table_unmap	    (GtkWidget	    *widget);
static void gtk_table_draw	    (GtkWidget	    *widget,
				     GdkRectangle   *area);
static gint gtk_table_expose	    (GtkWidget	    *widget,
				     GdkEventExpose *event);
static void gtk_table_size_request  (GtkWidget	    *widget,
				     GtkRequisition *requisition);
static void gtk_table_size_allocate (GtkWidget	    *widget,
				     GtkAllocation  *allocation);
static void gtk_table_add	    (GtkContainer   *container,
				     GtkWidget	    *widget);
static void gtk_table_remove	    (GtkContainer   *container,
				     GtkWidget	    *widget);
static void gtk_table_forall	    (GtkContainer   *container,
				     gboolean	     include_internals,
				     GtkCallback     callback,
				     gpointer	     callback_data);
static void gtk_table_get_arg       (GtkObject      *object,
				     GtkArg         *arg,
				     guint           arg_id);
static void gtk_table_set_arg       (GtkObject      *object,
				     GtkArg         *arg,
				     guint           arg_id);
static void gtk_table_set_child_arg (GtkContainer   *container,
				     GtkWidget      *child,
				     GtkArg         *arg,
				     guint           arg_id);
static void gtk_table_get_child_arg (GtkContainer   *container,
				     GtkWidget      *child,
				     GtkArg         *arg,
				     guint           arg_id);
static GtkType gtk_table_child_type (GtkContainer   *container);


static void gtk_table_size_request_init	 (GtkTable *table);
static void gtk_table_size_request_pass1 (GtkTable *table);
static void gtk_table_size_request_pass2 (GtkTable *table);
static void gtk_table_size_request_pass3 (GtkTable *table);

static void gtk_table_size_allocate_init  (GtkTable *table);
static void gtk_table_size_allocate_pass1 (GtkTable *table);
static void gtk_table_size_allocate_pass2 (GtkTable *table);


static GtkContainerClass *parent_class = NULL;


GtkType
gtk_table_get_type (void)
{
  static GtkType table_type = 0;
  
  if (!table_type)
    {
      static const GtkTypeInfo table_info =
      {
	"GtkTable",
	sizeof (GtkTable),
	sizeof (GtkTableClass),
	(GtkClassInitFunc) gtk_table_class_init,
	(GtkObjectInitFunc) gtk_table_init,
        /* reserved_1 */ NULL,
	/* reserved_2 */ NULL,
	(GtkClassInitFunc) NULL,
      };
      
      table_type = gtk_type_unique (gtk_container_get_type (), &table_info);
    }
  
  return table_type;
}

static void
gtk_table_class_init (GtkTableClass *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 ());
  
  gtk_object_add_arg_type ("GtkTable::n_rows", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_N_ROWS);
  gtk_object_add_arg_type ("GtkTable::n_columns", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_N_COLUMNS);
  gtk_object_add_arg_type ("GtkTable::row_spacing", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_ROW_SPACING);
  gtk_object_add_arg_type ("GtkTable::column_spacing", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_COLUMN_SPACING);
  gtk_object_add_arg_type ("GtkTable::homogeneous", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_HOMOGENEOUS);
  gtk_container_add_child_arg_type ("GtkTable::left_attach", GTK_TYPE_UINT, GTK_ARG_READWRITE, CHILD_ARG_LEFT_ATTACH);
  gtk_container_add_child_arg_type ("GtkTable::right_attach", GTK_TYPE_UINT, GTK_ARG_READWRITE, CHILD_ARG_RIGHT_ATTACH);
  gtk_container_add_child_arg_type ("GtkTable::top_attach", GTK_TYPE_UINT, GTK_ARG_READWRITE, CHILD_ARG_TOP_ATTACH);
  gtk_container_add_child_arg_type ("GtkTable::bottom_attach", GTK_TYPE_UINT, GTK_ARG_READWRITE, CHILD_ARG_BOTTOM_ATTACH);
  gtk_container_add_child_arg_type ("GtkTable::x_options", GTK_TYPE_ATTACH_OPTIONS, GTK_ARG_READWRITE, CHILD_ARG_X_OPTIONS);
  gtk_container_add_child_arg_type ("GtkTable::y_options", GTK_TYPE_ATTACH_OPTIONS, GTK_ARG_READWRITE, CHILD_ARG_Y_OPTIONS);
  gtk_container_add_child_arg_type ("GtkTable::x_padding", GTK_TYPE_UINT, GTK_ARG_READWRITE, CHILD_ARG_X_PADDING);
  gtk_container_add_child_arg_type ("GtkTable::y_padding", GTK_TYPE_UINT, GTK_ARG_READWRITE, CHILD_ARG_Y_PADDING);

  object_class->get_arg = gtk_table_get_arg;
  object_class->set_arg = gtk_table_set_arg;
  object_class->finalize = gtk_table_finalize;
  
  widget_class->map = gtk_table_map;
  widget_class->unmap = gtk_table_unmap;
  widget_class->draw = gtk_table_draw;
  widget_class->expose_event = gtk_table_expose;
  widget_class->size_request = gtk_table_size_request;
  widget_class->size_allocate = gtk_table_size_allocate;
  
  container_class->add = gtk_table_add;
  container_class->remove = gtk_table_remove;
  container_class->forall = gtk_table_forall;
  container_class->child_type = gtk_table_child_type;
  container_class->set_child_arg = gtk_table_set_child_arg;
  container_class->get_child_arg = gtk_table_get_child_arg;
}

static GtkType
gtk_table_child_type (GtkContainer   *container)
{
  return GTK_TYPE_WIDGET;
}

static void
gtk_table_get_arg (GtkObject      *object,
		   GtkArg         *arg,
		   guint           arg_id)
{
  GtkTable *table;

  table = GTK_TABLE (object);

  switch (arg_id)
    {
    case ARG_N_ROWS:
      GTK_VALUE_UINT (*arg) = table->nrows;
      break;
    case ARG_N_COLUMNS:
      GTK_VALUE_UINT (*arg) = table->ncols;
      break;
    case ARG_ROW_SPACING:
      GTK_VALUE_UINT (*arg) = table->row_spacing;
      break;
    case ARG_COLUMN_SPACING:
      GTK_VALUE_UINT (*arg) = table->column_spacing;
      break;
    case ARG_HOMOGENEOUS:
      GTK_VALUE_BOOL (*arg) = table->homogeneous;
      break;
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
    }
}

static void
gtk_table_set_arg (GtkObject      *object,
		   GtkArg         *arg,
		   guint           arg_id)
{
  GtkTable *table;

  table = GTK_TABLE (object);

  switch (arg_id)
    {
    case ARG_N_ROWS:
      gtk_table_resize (table, GTK_VALUE_UINT (*arg), table->ncols);
      break;
    case ARG_N_COLUMNS:
      gtk_table_resize (table, table->nrows, GTK_VALUE_UINT (*arg));
      break;
    case ARG_ROW_SPACING:
      gtk_table_set_row_spacings (table, GTK_VALUE_UINT (*arg));
      break;
    case ARG_COLUMN_SPACING:
      gtk_table_set_col_spacings (table, GTK_VALUE_UINT (*arg));
      break;
    case ARG_HOMOGENEOUS:
      gtk_table_set_homogeneous (table, GTK_VALUE_BOOL (*arg));
      break;
    default:
      break;
    }
}

static void
gtk_table_set_child_arg (GtkContainer   *container,
			 GtkWidget      *child,
			 GtkArg         *arg,
			 guint           arg_id)
{
  GtkTable *table;
  GtkTableChild *table_child;
  GList *list;

  table = GTK_TABLE (container);
  table_child = NULL;
  for (list = table->children; list; list = list->next)
    {
      table_child = list->data;

      if (table_child->widget == child)
	break;
    }
  if (!list)
    return;

  switch (arg_id)
    {
    case CHILD_ARG_LEFT_ATTACH:
      table_child->left_attach = GTK_VALUE_UINT (*arg);
      if (table_child->right_attach <= table_child->left_attach)
	table_child->right_attach = table_child->left_attach + 1;
      if (table_child->right_attach >= table->ncols)
	gtk_table_resize (table, table->ncols, table_child->right_attach);
      break;
    case CHILD_ARG_RIGHT_ATTACH:
      if (GTK_VALUE_UINT (*arg) > 0)
	{
	  table_child->right_attach = GTK_VALUE_UINT (*arg);
	  if (table_child->right_attach <= table_child->left_attach)
	    table_child->left_attach = table_child->right_attach - 1;
	  if (table_child->right_attach >= table->ncols)
	    gtk_table_resize (table, table->ncols, table_child->right_attach);
	}
      break;
    case CHILD_ARG_TOP_ATTACH:
      table_child->top_attach = GTK_VALUE_UINT (*arg);
      if (table_child->bottom_attach <= table_child->top_attach)
	table_child->bottom_attach = table_child->top_attach + 1;
      if (table_child->bottom_attach >= table->nrows)
	gtk_table_resize (table, table_child->bottom_attach, table->ncols);
      break;
    case CHILD_ARG_BOTTOM_ATTACH:
      if (GTK_VALUE_UINT (*arg) > 0)
	{
	  table_child->bottom_attach = GTK_VALUE_UINT (*arg);
	  if (table_child->bottom_attach <= table_child->top_attach)
	    table_child->top_attach = table_child->bottom_attach - 1;
	  if (table_child->bottom_attach >= table->nrows)
	    gtk_table_resize (table, table_child->bottom_attach, table->ncols);
	}
      break;
    case CHILD_ARG_X_OPTIONS:
      table_child->xexpand = (GTK_VALUE_FLAGS (*arg) & GTK_EXPAND) != 0;
      table_child->xshrink = (GTK_VALUE_FLAGS (*arg) & GTK_SHRINK) != 0;
      table_child->xfill = (GTK_VALUE_FLAGS (*arg) & GTK_FILL) != 0;
      break;
    case CHILD_ARG_Y_OPTIONS:
      table_child->yexpand = (GTK_VALUE_FLAGS (*arg) & GTK_EXPAND) != 0;
      table_child->yshrink = (GTK_VALUE_FLAGS (*arg) & GTK_SHRINK) != 0;
      table_child->yfill = (GTK_VALUE_FLAGS (*arg) & GTK_FILL) != 0;
      break;
    case CHILD_ARG_X_PADDING:
      table_child->xpadding = GTK_VALUE_UINT (*arg);
      break;
    case CHILD_ARG_Y_PADDING:
      table_child->ypadding = GTK_VALUE_UINT (*arg);
      break;
    default:
      break;
    }
  if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (table))
    gtk_widget_queue_resize (child);
}

static void
gtk_table_get_child_arg (GtkContainer   *container,
			 GtkWidget      *child,
			 GtkArg         *arg,
			 guint           arg_id)
{
  GtkTable *table;
  GtkTableChild *table_child;
  GList *list;

  table = GTK_TABLE (container);
  table_child = NULL;
  for (list = table->children; list; list = list->next)
    {
      table_child = list->data;

      if (table_child->widget == child)
	break;
    }
  if (!list)
    return;

  switch (arg_id)
    {
    case CHILD_ARG_LEFT_ATTACH:
      GTK_VALUE_UINT (*arg) = table_child->left_attach;
      break;
    case CHILD_ARG_RIGHT_ATTACH:
      GTK_VALUE_UINT (*arg) = table_child->right_attach;
      break;
    case CHILD_ARG_TOP_ATTACH:
      GTK_VALUE_UINT (*arg) = table_child->top_attach;
      break;
    case CHILD_ARG_BOTTOM_ATTACH:
      GTK_VALUE_UINT (*arg) = table_child->bottom_attach;
      break;
    case CHILD_ARG_X_OPTIONS:
      GTK_VALUE_FLAGS (*arg) = (table_child->xexpand * GTK_EXPAND |
				table_child->xshrink * GTK_SHRINK |
				table_child->xfill * GTK_FILL);
      break;
    case CHILD_ARG_Y_OPTIONS:
      GTK_VALUE_FLAGS (*arg) = (table_child->yexpand * GTK_EXPAND |
				table_child->yshrink * GTK_SHRINK |
				table_child->yfill * GTK_FILL);
      break;
    case CHILD_ARG_X_PADDING:
      GTK_VALUE_UINT (*arg) = table_child->xpadding;
      break;
    case CHILD_ARG_Y_PADDING:
      GTK_VALUE_UINT (*arg) = table_child->ypadding;
      break;
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
    }
}

static void
gtk_table_init (GtkTable *table)
{
  GTK_WIDGET_SET_FLAGS (table, GTK_NO_WINDOW);
  
  table->children = NULL;
  table->rows = NULL;
  table->cols = NULL;
  table->nrows = 0;
  table->ncols = 0;
  table->column_spacing = 0;
  table->row_spacing = 0;
  table->homogeneous = FALSE;

  gtk_table_resize (table, 1, 1);
}

GtkWidget*
gtk_table_new (guint	rows,
	       guint	columns,
	       gboolean homogeneous)
{
  GtkTable *table;

  if (rows == 0)
	  rows = 1;
  if (columns == 0)
	  columns = 1;
  
  table = gtk_type_new (gtk_table_get_type ());
  
  table->homogeneous = (homogeneous ? TRUE : FALSE);

  gtk_table_resize (table, rows, columns);
  
  return GTK_WIDGET (table);
}

void
gtk_table_resize (GtkTable *table,
		  guint     n_rows,
		  guint     n_cols)
{
  g_return_if_fail (table != NULL);
  g_return_if_fail (GTK_IS_TABLE (table));

  n_rows = MAX (n_rows, 1);
  n_cols = MAX (n_cols, 1);
  
  if (n_rows != table->nrows ||
      n_cols != table->ncols)
    {
      GList *list;
      
      for (list = table->children; list; list = list->next)
	{
	  GtkTableChild *child;
	  
	  child = list->data;
	  
	  n_rows = MAX (n_rows, child->bottom_attach);
	  n_cols = MAX (n_cols, child->right_attach);
	}
      
      if (n_rows != table->nrows)
	{
	  guint i;

	  i = table->nrows;
	  table->nrows = n_rows;
	  table->rows = g_realloc (table->rows, table->nrows * sizeof (GtkTableRowCol));
	  
	  for (; i < table->nrows; i++)
	    {
	      table->rows[i].requisition = 0;
	      table->rows[i].allocation = 0;
	      table->rows[i].spacing = table->row_spacing;
	      table->rows[i].need_expand = 0;
	      table->rows[i].need_shrink = 0;
	      table->rows[i].expand = 0;
	      table->rows[i].shrink = 0;
	    }
	}

      if (n_cols != table->ncols)
	{
	  guint i;

	  i = table->ncols;
	  table->ncols = n_cols;
	  table->cols = g_realloc (table->cols, table->ncols * sizeof (GtkTableRowCol));
	  
	  for (; i < table->ncols; i++)
	    {
	      table->cols[i].requisition = 0;
	      table->cols[i].allocation = 0;
	      table->cols[i].spacing = table->column_spacing;
	      table->cols[i].need_expand = 0;
	      table->cols[i].need_shrink = 0;
	      table->cols[i].expand = 0;
	      table->cols[i].shrink = 0;
	    }
	}
    }
}

void
gtk_table_attach (GtkTable	  *table,
		  GtkWidget	  *child,
		  guint		   left_attach,
		  guint		   right_attach,
		  guint		   top_attach,
		  guint		   bottom_attach,
		  GtkAttachOptions xoptions,
		  GtkAttachOptions yoptions,
		  guint		   xpadding,
		  guint		   ypadding)
{
  GtkTableChild *table_child;
  
  g_return_if_fail (table != NULL);
  g_return_if_fail (GTK_IS_TABLE (table));
  g_return_if_fail (child != NULL);
  g_return_if_fail (GTK_IS_WIDGET (child));
  g_return_if_fail (child->parent == NULL);
  
  /* g_return_if_fail (left_attach >= 0); */
  g_return_if_fail (left_attach < right_attach);
  /* g_return_if_fail (top_attach >= 0); */