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9c5d32799d87112de1234a05ab5b026b3755d212
gtk3/gtk/gtktable.c
Elliot Lee 9508b76bd2 Initial revision
1997-11-24 22:37:52 +00:00

1179 lines
32 KiB
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/* 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 "gtktable.h"
static void gtk_table_class_init (GtkTableClass *klass);
static void gtk_table_init (GtkTable *table);
static void gtk_table_destroy (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_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
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;
guint
gtk_table_get_type ()
{
static guint table_type = 0;
if (!table_type)
{
GtkTypeInfo table_info =
{
"GtkTable",
sizeof (GtkTable),
sizeof (GtkTableClass),
(GtkClassInitFunc) gtk_table_class_init,
(GtkObjectInitFunc) gtk_table_init,
(GtkArgFunc) 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 ());
object_class->destroy = gtk_table_destroy;
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->foreach = gtk_table_foreach;
}
static void
gtk_table_init (GtkTable *table)
{
GTK_WIDGET_SET_FLAGS (table, GTK_NO_WINDOW | GTK_BASIC);
table->children = NULL;
table->rows = NULL;
table->cols = NULL;
table->nrows = 0;
table->ncols = 0;
table->homogeneous = FALSE;
}
GtkWidget*
gtk_table_new (gint rows,
gint columns,
gint homogeneous)
{
GtkTable *table;
gint row, col;
table = gtk_type_new (gtk_table_get_type ());
table->nrows = rows;
table->ncols = columns;
table->homogeneous = (homogeneous ? TRUE : FALSE);
table->rows = g_new (GtkTableRowCol, table->nrows);
table->cols = g_new (GtkTableRowCol, table->ncols);
for (row = 0; row < table->nrows; row++)
{
table->rows[row].requisition = 0;
table->rows[row].allocation = 0;
table->rows[row].spacing = 0;
table->rows[row].need_expand = 0;
table->rows[row].need_shrink = 0;
table->rows[row].expand = 0;
table->rows[row].shrink = 0;
}
for (col = 0; col < table->ncols; col++)
{
table->cols[col].requisition = 0;
table->cols[col].allocation = 0;
table->cols[col].spacing = 0;
table->cols[col].need_expand = 0;
table->cols[col].need_shrink = 0;
table->cols[col].expand = 0;
table->cols[col].shrink = 0;
}
return GTK_WIDGET (table);
}
void
gtk_table_attach (GtkTable *table,
GtkWidget *child,
gint left_attach,
gint right_attach,
gint top_attach,
gint bottom_attach,
gint xoptions,
gint yoptions,
gint xpadding,
gint 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 ((left_attach >= 0) && (left_attach < table->ncols));
g_return_if_fail ((left_attach < right_attach) && (right_attach <= table->ncols));
g_return_if_fail ((top_attach >= 0) && (top_attach < table->nrows));
g_return_if_fail ((top_attach < bottom_attach) && (bottom_attach <= table->nrows));
table_child = g_new (GtkTableChild, 1);
table_child->widget = child;
table_child->left_attach = left_attach;
table_child->right_attach = right_attach;
table_child->top_attach = top_attach;
table_child->bottom_attach = bottom_attach;
table_child->xexpand = (xoptions & GTK_EXPAND) != 0;
table_child->xshrink = (xoptions & GTK_SHRINK) != 0;
table_child->xfill = (xoptions & GTK_FILL) != 0;
table_child->xpadding = xpadding;
table_child->yexpand = (yoptions & GTK_EXPAND) != 0;
table_child->yshrink = (yoptions & GTK_SHRINK) != 0;
table_child->yfill = (yoptions & GTK_FILL) != 0;
table_child->ypadding = ypadding;
table->children = g_list_prepend (table->children, table_child);
gtk_widget_set_parent (child, GTK_WIDGET (table));
if (GTK_WIDGET_VISIBLE (GTK_WIDGET (table)))
{
if (GTK_WIDGET_REALIZED (GTK_WIDGET (table)) &&
!GTK_WIDGET_REALIZED (child))
gtk_widget_realize (child);
if (GTK_WIDGET_MAPPED (GTK_WIDGET (table)) &&
!GTK_WIDGET_MAPPED (child))
gtk_widget_map (child);
}
if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (table))
gtk_widget_queue_resize (child);
}
void
gtk_table_attach_defaults (GtkTable *table,
GtkWidget *widget,
gint left_attach,
gint right_attach,
gint top_attach,
gint bottom_attach)
{
gtk_table_attach (table, widget,
left_attach, right_attach,
top_attach, bottom_attach,
GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL,
0, 0);
}
void
gtk_table_set_row_spacing (GtkTable *table,
gint row,
gint spacing)
{
g_return_if_fail (table != NULL);
g_return_if_fail (GTK_IS_TABLE (table));
g_return_if_fail ((row >= 0) && (row < (table->nrows - 1)));
if (table->rows[row].spacing != spacing)
{
table->rows[row].spacing = spacing;
if (GTK_WIDGET_VISIBLE (table))
gtk_widget_queue_resize (GTK_WIDGET (table));
}
}
void
gtk_table_set_col_spacing (GtkTable *table,
gint column,
gint spacing)
{
g_return_if_fail (table != NULL);
g_return_if_fail (GTK_IS_TABLE (table));
g_return_if_fail ((column >= 0) && (column < (table->ncols - 1)));
if (table->cols[column].spacing != spacing)
{
table->cols[column].spacing = spacing;
if (GTK_WIDGET_VISIBLE (table))
gtk_widget_queue_resize (GTK_WIDGET (table));
}
}
void
gtk_table_set_row_spacings (GtkTable *table,
gint spacing)
{
gint row;
g_return_if_fail (table != NULL);
g_return_if_fail (GTK_IS_TABLE (table));
for (row = 0; row < table->nrows - 1; row++)
table->rows[row].spacing = spacing;
if (GTK_WIDGET_VISIBLE (table))
gtk_widget_queue_resize (GTK_WIDGET (table));
}
void
gtk_table_set_col_spacings (GtkTable *table,
gint spacing)
{
gint col;
g_return_if_fail (table != NULL);
g_return_if_fail (GTK_IS_TABLE (table));
for (col = 0; col < table->ncols - 1; col++)
table->cols[col].spacing = spacing;
if (GTK_WIDGET_VISIBLE (table))
gtk_widget_queue_resize (GTK_WIDGET (table));
}
static void
gtk_table_destroy (GtkObject *object)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_TABLE (object));
table = GTK_TABLE (object);
children = table->children;
while (children)
{
child = children->data;
children = children->next;
child->widget->parent = NULL;
gtk_object_unref (GTK_OBJECT (child->widget));
gtk_widget_destroy (child->widget);
g_free (child);
}
g_list_free (table->children);
g_free (table->rows);
g_free (table->cols);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_table_map (GtkWidget *widget)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TABLE (widget));
table = GTK_TABLE (widget);
GTK_WIDGET_SET_FLAGS (table, GTK_MAPPED);
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget) &&
!GTK_WIDGET_MAPPED (child->widget))
gtk_widget_map (child->widget);
}
}
static void
gtk_table_unmap (GtkWidget *widget)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TABLE (widget));
table = GTK_TABLE (widget);
GTK_WIDGET_UNSET_FLAGS (table, GTK_MAPPED);
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget) &&
GTK_WIDGET_MAPPED (child->widget))
gtk_widget_unmap (child->widget);
}
}
static void
gtk_table_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
GdkRectangle child_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TABLE (widget));
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
{
table = GTK_TABLE (widget);
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (gtk_widget_intersect (child->widget, area, &child_area))
gtk_widget_draw (child->widget, &child_area);
}
}
}
static gint
gtk_table_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
GdkEventExpose child_event;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_TABLE (widget), FALSE);
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
{
table = GTK_TABLE (widget);
child_event = *event;
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_NO_WINDOW (child->widget) &&
gtk_widget_intersect (child->widget, &event->area, &child_event.area))
gtk_widget_event (child->widget, (GdkEvent*) &child_event);
}
}
return FALSE;
}
static void
gtk_table_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkTable *table;
gint row, col;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TABLE (widget));
g_return_if_fail (requisition != NULL);
table = GTK_TABLE (widget);
requisition->width = 0;
requisition->height = 0;
gtk_table_size_request_init (table);
gtk_table_size_request_pass1 (table);
gtk_table_size_request_pass2 (table);
gtk_table_size_request_pass3 (table);
gtk_table_size_request_pass2 (table);
for (col = 0; col < table->ncols; col++)
requisition->width += table->cols[col].requisition;
for (col = 0; col < table->ncols - 1; col++)
requisition->width += table->cols[col].spacing;
for (row = 0; row < table->nrows; row++)
requisition->height += table->rows[row].requisition;
for (row = 0; row < table->nrows - 1; row++)
requisition->height += table->rows[row].spacing;
requisition->width += GTK_CONTAINER (table)->border_width * 2;
requisition->height += GTK_CONTAINER (table)->border_width * 2;
}
static void
gtk_table_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkTable *table;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TABLE (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
table = GTK_TABLE (widget);
gtk_table_size_allocate_init (table);
gtk_table_size_allocate_pass1 (table);
gtk_table_size_allocate_pass2 (table);
}
static void
gtk_table_add (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_TABLE (container));
g_return_if_fail (widget != NULL);
gtk_table_attach_defaults (GTK_TABLE (container), widget, 0, 1, 0, 1);
}
static void
gtk_table_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_TABLE (container));
g_return_if_fail (widget != NULL);
table = GTK_TABLE (container);
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (child->widget == widget)
{
gtk_widget_unparent (widget);
table->children = g_list_remove (table->children, child);
g_free (child);
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
break;
}
}
}
static void
gtk_table_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkTable *table;
GtkTableChild *child;
GList *children;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_TABLE (container));
g_return_if_fail (callback != NULL);
table = GTK_TABLE (container);
children = table->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child->widget, callback_data);
}
}
static void
gtk_table_size_request_init (GtkTable *table)
{
GtkTableChild *child;
GList *children;
gint row, col;
for (row = 0; row < table->nrows; row++)
table->rows[row].requisition = 0;
for (col = 0; col < table->ncols; col++)
table->cols[col].requisition = 0;
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
gtk_widget_size_request (child->widget, &child->widget->requisition);
}
}
static void
gtk_table_size_request_pass1 (GtkTable *table)
{
GtkTableChild *child;
GList *children;
gint width;
gint height;
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
/* Child spans a single column.
*/
if (child->left_attach == (child->right_attach - 1))
{
width = child->widget->requisition.width + child->xpadding * 2;
table->cols[child->left_attach].requisition = MAX (table->cols[child->left_attach].requisition, width);
}
/* Child spans a single row.
*/
if (child->top_attach == (child->bottom_attach - 1))
{
height = child->widget->requisition.height + child->ypadding * 2;
table->rows[child->top_attach].requisition = MAX (table->rows[child->top_attach].requisition, height);
}
}
}
}
static void
gtk_table_size_request_pass2 (GtkTable *table)
{
gint max_width;
gint max_height;
gint row, col;
if (table->homogeneous)
{
max_width = 0;
max_height = 0;
for (col = 0; col < table->ncols; col++)
max_width = MAX (max_width, table->cols[col].requisition);
for (row = 0; row < table->nrows; row++)
max_height = MAX (max_height, table->rows[row].requisition);
for (col = 0; col < table->ncols; col++)
table->cols[col].requisition = max_width;
for (row = 0; row < table->nrows; row++)
table->rows[row].requisition = max_height;
}
}
static void
gtk_table_size_request_pass3 (GtkTable *table)
{
GtkTableChild *child;
GList *children;
gint width, height;
gint row, col;
gint extra;
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
/* Child spans multiple columns.
*/
if (child->left_attach != (child->right_attach - 1))
{
/* Check and see if there is already enough space
* for the child.
*/
width = 0;
for (col = child->left_attach; col < child->right_attach; col++)
{
width += table->cols[col].requisition;
if ((col + 1) < child->right_attach)
width += table->cols[col].spacing;
}
/* If we need to request more space for this child to fill
* its requisition, then divide up the needed space evenly
* amongst the columns it spans.
*/
if (width < child->widget->requisition.width)
{
width = child->widget->requisition.width - width;
extra = width / (child->right_attach - child->left_attach);
for (col = child->left_attach; col < child->right_attach; col++)
{
if ((col + 1) < child->right_attach)
table->cols[col].requisition += extra;
else
table->cols[col].requisition += width;
width -= extra;
}
}
}
/* Child spans multiple rows.
*/
if (child->top_attach != (child->bottom_attach - 1))
{
/* Check and see if there is already enough space
* for the child.
*/
height = 0;
for (row = child->top_attach; row < child->bottom_attach; row++)
{
height += table->rows[row].requisition;
if ((row + 1) < child->bottom_attach)
height += table->rows[row].spacing;
}
/* If we need to request more space for this child to fill
* its requisition, then divide up the needed space evenly
* amongst the columns it spans.
*/
if (height < child->widget->requisition.height)
{
height = child->widget->requisition.height - height;
extra = height / (child->bottom_attach - child->top_attach);
for (row = child->top_attach; row < child->bottom_attach; row++)
{
if ((row + 1) < child->bottom_attach)
table->rows[row].requisition += extra;
else
table->rows[row].requisition += height;
height -= extra;
}
}
}
}
}
}
static void
gtk_table_size_allocate_init (GtkTable *table)
{
GtkTableChild *child;
GList *children;
gint row, col;
gint has_expand;
gint has_shrink;
/* Initialize the rows and cols.
* By default, rows and cols do not expand and do shrink.
* Those values are modified by the children that occupy
* the rows and cols.
*/
for (col = 0; col < table->ncols; col++)
{
table->cols[col].allocation = table->cols[col].requisition;
table->cols[col].need_expand = FALSE;
table->cols[col].need_shrink = TRUE;
table->cols[col].expand = FALSE;
table->cols[col].shrink = TRUE;
}
for (row = 0; row < table->nrows; row++)
{
table->rows[row].allocation = table->rows[row].requisition;
table->rows[row].need_expand = FALSE;
table->rows[row].need_shrink = TRUE;
table->rows[row].expand = FALSE;
table->rows[row].shrink = TRUE;
}
/* Loop over all the children and adjust the row and col values
* based on whether the children want to be allowed to expand
* or shrink. This loop handles children that occupy a single
* row or column.
*/
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
if (child->left_attach == (child->right_attach - 1))
{
if (child->xexpand)
table->cols[child->left_attach].expand = TRUE;
if (!child->xshrink)
table->cols[child->left_attach].shrink = FALSE;
}
if (child->top_attach == (child->bottom_attach - 1))
{
if (child->yexpand)
table->rows[child->top_attach].expand = TRUE;
if (!child->yshrink)
table->rows[child->top_attach].shrink = FALSE;
}
}
}
/* Loop over all the children again and this time handle children
* which span multiple rows or columns.
*/
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
if (child->left_attach != (child->right_attach - 1))
{
if (child->xexpand)
{
has_expand = FALSE;
for (col = child->left_attach; col < child->right_attach; col++)
if (table->cols[col].expand)
{
has_expand = TRUE;
break;
}
if (!has_expand)
for (col = child->left_attach; col < child->right_attach; col++)
table->cols[col].need_expand = TRUE;
}
if (!child->xshrink)
{
has_shrink = TRUE;
for (col = child->left_attach; col < child->right_attach; col++)
if (!table->cols[col].shrink)
{
has_shrink = FALSE;
break;
}
if (has_shrink)
for (col = child->left_attach; col < child->right_attach; col++)
table->cols[col].need_shrink = FALSE;
}
}
if (child->top_attach != (child->bottom_attach - 1))
{
if (child->yexpand)
{
has_expand = FALSE;
for (row = child->top_attach; row < child->bottom_attach; row++)
if (table->rows[row].expand)
{
has_expand = TRUE;
break;
}
if (!has_expand)
for (row = child->top_attach; row < child->bottom_attach; row++)
table->rows[row].need_expand = TRUE;
}
if (!child->yshrink)
{
has_shrink = TRUE;
for (row = child->top_attach; row < child->bottom_attach; row++)
if (!table->rows[row].shrink)
{
has_shrink = FALSE;
break;
}
if (has_shrink)
for (row = child->top_attach; row < child->bottom_attach; row++)
table->rows[row].need_shrink = FALSE;
}
}
}
}
/* Loop over the columns and set the expand and shrink values
* if the column can be expanded or shrunk.
*/
for (col = 0; col < table->ncols; col++)
{
if (table->cols[col].need_expand)
table->cols[col].expand = TRUE;
if (!table->cols[col].need_shrink)
table->cols[col].shrink = FALSE;
}
/* Loop over the rows and set the expand and shrink values
* if the row can be expanded or shrunk.
*/
for (row = 0; row < table->nrows; row++)
{
if (table->rows[row].need_expand)
table->rows[row].expand = TRUE;
if (!table->rows[row].need_shrink)
table->rows[row].shrink = FALSE;
}
}
static void
gtk_table_size_allocate_pass1 (GtkTable *table)
{
gint real_width;
gint real_height;
gint width, height;
gint row, col;
gint nexpand;
gint nshrink;
gint extra;
/* If we were allocated more space than we requested
* then we have to expand any expandable rows and columns
* to fill in the extra space.
*/
real_width = GTK_WIDGET (table)->allocation.width - GTK_CONTAINER (table)->border_width * 2;
real_height = GTK_WIDGET (table)->allocation.height - GTK_CONTAINER (table)->border_width * 2;
if (table->homogeneous)
{
nexpand = 0;
for (col = 0; col < table->ncols; col++)
if (table->cols[col].expand)
{
nexpand += 1;
break;
}
if (nexpand > 0)
{
width = real_width;
for (col = 0; col < table->ncols - 1; col++)
width -= table->cols[col].spacing;
extra = width / table->ncols;
for (col = 0; col < table->ncols; col++)
{
if ((col + 1) == table->ncols)
table->cols[col].allocation = width;
else
table->cols[col].allocation = extra;
width -= extra;
}
}
}
else
{
width = 0;
nexpand = 0;
nshrink = 0;
for (col = 0; col < table->ncols; col++)
{
width += table->cols[col].requisition;
if (table->cols[col].expand)
nexpand += 1;
if (table->cols[col].shrink)
nshrink += 1;
}
for (col = 0; col < table->ncols - 1; col++)
width += table->cols[col].spacing;
/* Check to see if we were allocated more width than we requested.
*/
if ((width < real_width) && (nexpand >= 1))
{
width = real_width - width;
extra = width / nexpand;
for (col = 0; col < table->ncols; col++)
if (table->cols[col].expand)
{
if (nexpand == 1)
table->cols[col].allocation += width;
else
table->cols[col].allocation += extra;
width -= extra;
nexpand -= 1;
}
}
/* Check to see if we were allocated less width than we requested.
*/
if ((width > real_width) && (nshrink >= 1))
{
width = width - real_width;
extra = width / nshrink;
for (col = 0; col < table->ncols; col++)
if (table->cols[col].shrink)
{
if (nshrink == 1)
table->cols[col].allocation -= width;
else
table->cols[col].allocation -= extra;
width -= extra;
nshrink -= 1;
}
}
}
if (table->homogeneous)
{
nexpand = 0;
for (row = 0; row < table->nrows; row++)
if (table->rows[row].expand)
{
nexpand += 1;
break;
}
if (nexpand > 0)
{
height = real_height;
for (row = 0; row < table->nrows - 1; row++)
height -= table->rows[row].spacing;
extra = height / table->nrows;
for (row = 0; row < table->nrows; row++)
{
if ((row + 1) == table->nrows)
table->rows[row].allocation = height;
else
table->rows[row].allocation = extra;
height -= extra;
}
}
}
else
{
height = 0;
nexpand = 0;
nshrink = 0;
for (row = 0; row < table->nrows; row++)
{
height += table->rows[row].requisition;
if (table->rows[row].expand)
nexpand += 1;
if (table->rows[row].shrink)
nshrink += 1;
}
for (row = 0; row < table->nrows - 1; row++)
height += table->rows[row].spacing;
/* Check to see if we were allocated more height than we requested.
*/
if ((height < real_height) && (nexpand >= 1))
{
height = real_height - height;
extra = height / nexpand;
for (row = 0; row < table->nrows; row++)
if (table->rows[row].expand)
{
if (nexpand == 1)
table->rows[row].allocation += height;
else
table->rows[row].allocation += extra;
height -= extra;
nexpand -= 1;
}
}
/* Check to see if we were allocated less height than we requested.
*/
if ((height > real_height) && (nshrink >= 1))
{
height = height - real_height;
extra = height / nshrink;
for (row = 0; row < table->nrows; row++)
if (table->rows[row].shrink)
{
if (nshrink == 1)
table->rows[row].allocation -= height;
else
table->rows[row].allocation -= extra;
height -= extra;
nshrink -= 1;
}
}
}
}
static void
gtk_table_size_allocate_pass2 (GtkTable *table)
{
GtkTableChild *child;
GList *children;
gint max_width;
gint max_height;
gint x, y;
gint row, col;
GtkAllocation allocation;
children = table->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
x = GTK_WIDGET (table)->allocation.x + GTK_CONTAINER (table)->border_width;
y = GTK_WIDGET (table)->allocation.y + GTK_CONTAINER (table)->border_width;
max_width = 0;
max_height = 0;
for (col = 0; col < child->left_attach; col++)
{
x += table->cols[col].allocation;
x += table->cols[col].spacing;
}
for (col = child->left_attach; col < child->right_attach; col++)
{
max_width += table->cols[col].allocation;
if ((col + 1) < child->right_attach)
max_width += table->cols[col].spacing;
}
for (row = 0; row < child->top_attach; row++)
{
y += table->rows[row].allocation;
y += table->rows[row].spacing;
}
for (row = child->top_attach; row < child->bottom_attach; row++)
{
max_height += table->rows[row].allocation;
if ((row + 1) < child->bottom_attach)
max_height += table->rows[row].spacing;
}
if (child->xfill)
{
allocation.width = max_width - child->xpadding * 2;
allocation.x = x + (max_width - allocation.width) / 2;
}
else
{
allocation.width = child->widget->requisition.width;
allocation.x = x + (max_width - allocation.width) / 2;
}
if (child->yfill)
{
allocation.height = max_height - child->ypadding * 2;
allocation.y = y + (max_height - allocation.height) / 2;
}
else
{
allocation.height = child->widget->requisition.height;
allocation.y = y + (max_height - allocation.height) / 2;
}
gtk_widget_size_allocate (child->widget, &allocation);
}
}
}
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