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Allow minimal implementation of GtkCellLayout

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Since GtkCellArea delegate does all the work, cell layout widgets
who use a GtkCellArea internally only have to implement the _get_area()
method, this just reduces code to forward the calls over the the internal
cell area.
This commit is contained in:
Tristan Van Berkom 2010-11-22 16:27:52 +09:00
parent d3aed12b65
commit cad41833a2
1 changed files with 126 additions and 23 deletions
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149
gtk/gtkcelllayout.c
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@ -54,12 +54,23 @@ gtk_cell_layout_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->pack_start) (cell_layout,
cell,
expand);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->pack_start)
iface->pack_start (cell_layout, cell, expand);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (area), cell, expand);
}
}
/**
@ -81,12 +92,23 @@ gtk_cell_layout_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->pack_end) (cell_layout,
cell,
expand);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->pack_end)
iface->pack_end (cell_layout, cell, expand);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (area), cell, expand);
}
}
/**
@ -101,9 +123,22 @@ gtk_cell_layout_pack_end (GtkCellLayout *cell_layout,
void
gtk_cell_layout_clear (GtkCellLayout *cell_layout)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->clear) (cell_layout);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->clear)
iface->clear (cell_layout);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_clear (GTK_CELL_LAYOUT (area));
}
}
static void
@ -114,17 +149,28 @@ gtk_cell_layout_set_attributesv (GtkCellLayout *cell_layout,
gchar *attribute;
gint column;
GtkCellLayoutIface *iface;
GtkCellArea *area;
attribute = va_arg (args, gchar *);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
(* iface->clear_attributes) (cell_layout, cell);
if (iface->get_area)
area = iface->get_area (cell_layout);
if (iface->clear_attributes)
iface->clear_attributes (cell_layout, cell);
else if (area)
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (area), cell);
while (attribute != NULL)
{
column = va_arg (args, gint);
(* iface->add_attribute) (cell_layout, cell, attribute, column);
if (iface->add_attribute)
iface->add_attribute (cell_layout, cell, attribute, column);
else if (area)
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (area), cell, attribute, column);
attribute = va_arg (args, gchar *);
}
}
@ -178,15 +224,28 @@ gtk_cell_layout_add_attribute (GtkCellLayout *cell_layout,
const gchar *attribute,
gint column)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (attribute != NULL);
g_return_if_fail (column >= 0);
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->add_attribute) (cell_layout,
cell,
attribute,
column);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->add_attribute)
iface->add_attribute (cell_layout,
cell,
attribute,
column);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (area), cell, attribute, column);
}
}
/**
@ -211,14 +270,27 @@ gtk_cell_layout_set_cell_data_func (GtkCellLayout *cell_layout,
gpointer func_data,
GDestroyNotify destroy)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->set_cell_data_func) (cell_layout,
cell,
func,
func_data,
destroy);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->set_cell_data_func)
iface->set_cell_data_func (cell_layout,
cell,
func,
func_data,
destroy);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (area), cell, func, func_data, destroy);
}
}
/**
@ -235,11 +307,23 @@ void
gtk_cell_layout_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->clear_attributes) (cell_layout,
cell);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->clear_attributes)
iface->clear_attributes (cell_layout, cell);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (area), cell);
}
}
/**
@ -258,12 +342,23 @@ gtk_cell_layout_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gint position)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_if_fail (GTK_IS_CELL_LAYOUT (cell_layout));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
(* GTK_CELL_LAYOUT_GET_IFACE (cell_layout)->reorder) (cell_layout,
cell,
position);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->reorder)
iface->reorder (cell_layout, cell, position);
else
{
area = iface->get_area (cell_layout);
if (area)
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (area), cell, position);
}
}
/**
@ -282,12 +377,20 @@ GList *
gtk_cell_layout_get_cells (GtkCellLayout *cell_layout)
{
GtkCellLayoutIface *iface;
GtkCellArea *area;
g_return_val_if_fail (GTK_IS_CELL_LAYOUT (cell_layout), NULL);
iface = GTK_CELL_LAYOUT_GET_IFACE (cell_layout);
if (iface->get_cells)
return iface->get_cells (cell_layout);
else
{
area = iface->get_area (cell_layout);
if (area)
return gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
}
return NULL;
}