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GtkGrid: Add a way to insert rows or columns

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This is useful functionality that makes it easier to insert
things in the middle of an already populated grid.

Bug 653817
This commit is contained in:
Matthias Clasen
2011-08-08 12:06:59 +02:00
parent 5bfef8c80a
commit 17f99f663f
5 changed files with 223 additions and 0 deletions
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136
gtk/gtkgrid.c
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@ -1479,6 +1479,142 @@ gtk_grid_attach_next_to (GtkGrid *grid,
grid_attach (grid, child, left, top, width, height);
}
/**
* gtk_grid_insert_row:
* @grid: a #GtkGrid
* @position: the position to insert the row at
*
* Inserts a row at the specified position.
*
* Children which are attached at or below this position
* are moved one row down. Children which span across this
* position are grown to span the new row.
*
* Since: 3.2
*/
void
gtk_grid_insert_row (GtkGrid *grid,
gint position)
{
GtkGridPrivate *priv = grid->priv;
GtkGridChild *child;
GList *list;
gint top, height;
g_return_if_fail (GTK_IS_GRID (grid));
for (list = priv->children; list; list = list->next)
{
child = list->data;
top = CHILD_TOP (child);
height = CHILD_HEIGHT (child);
if (top >= position)
{
CHILD_TOP (child) = top + 1;
gtk_container_child_notify (GTK_CONTAINER (grid), child->widget, "top-attach");
}
else if (top + height > position)
{
CHILD_HEIGHT (child) = height + 1;
gtk_container_child_notify (GTK_CONTAINER (grid), child->widget, "height");
}
}
}
/**
* gtk_grid_insert_column:
* @grid: a #GtkGrid
* @position: the position to insert the column at
*
* Inserts a column at the specified position.
*
* Children which are attached at or to the right of this position
* are moved one column to the right. Children which span across this
* position are grown to span the new column.
*
* Since: 3.2
*/
void
gtk_grid_insert_column (GtkGrid *grid,
gint position)
{
GtkGridPrivate *priv = grid->priv;
GtkGridChild *child;
GList *list;
gint left, width;
g_return_if_fail (GTK_IS_GRID (grid));
for (list = priv->children; list; list = list->next)
{
child = list->data;
left = CHILD_LEFT (child);
width = CHILD_WIDTH (child);
if (left >= position)
{
CHILD_LEFT (child) = left + 1;
gtk_container_child_notify (GTK_CONTAINER (grid), child->widget, "left-attach");
}
else if (left + width > position)
{
CHILD_WIDTH (child) = width + 1;
gtk_container_child_notify (GTK_CONTAINER (grid), child->widget, "width");
}
}
}
/**
* gtk_grid_insert_next_to:
* @grid: a #GtkGrid
* @sibling: the child of @grid that the new row or column will be
* placed next to
* @side: the side of @sibling that @child is positioned next to
*
* Inserts a row or column at the specified position.
*
* The new row or column is placed next to @sibling, on the side
* determined by @side. If @side is %GTK_POS_TOP or %GTK_POS_BOTTOM,
* a row is inserted. If @side is %GTK_POS_LEFT of %GTK_POS_RIGHT,
* a column is inserted.
*
* Since: 3.2
*/
void
gtk_grid_insert_next_to (GtkGrid *grid,
GtkWidget *sibling,
GtkPositionType side)
{
GtkGridChild *child;
g_return_if_fail (GTK_IS_GRID (grid));
g_return_if_fail (GTK_IS_WIDGET (sibling));
g_return_if_fail (gtk_widget_get_parent (sibling) == (GtkWidget*)grid);
child = find_grid_child (grid, sibling);
switch (side)
{
case GTK_POS_LEFT:
gtk_grid_insert_column (grid, CHILD_LEFT (child));
break;
case GTK_POS_RIGHT:
gtk_grid_insert_column (grid, CHILD_LEFT (child) + CHILD_WIDTH (child));
break;
case GTK_POS_TOP:
gtk_grid_insert_row (grid, CHILD_TOP (child));
break;
case GTK_POS_BOTTOM:
gtk_grid_insert_row (grid, CHILD_TOP (child) + CHILD_HEIGHT (child));
break;
default:
g_assert_not_reached ();
}
}
/**
* gtk_grid_set_row_homogeneous:
* @grid: a #GtkGrid