forked from AuroraMiddleware/gtk
e2a82c70b4
This patch adds height-for-width geometry management for cell renderers while still responding to the old gtk_cell_renderer_get_size() apis with virtual return values (obtained by soliciting the new height-for-width cell renderer apis).
336 lines
9.8 KiB
C
336 lines
9.8 KiB
C
/* gtkcellsizerequest.c
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* Copyright (C) 2010 Openismus GmbH
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*
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* Author:
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* Tristan Van Berkom <tristan.van.berkom@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* 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
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include "gtkcellrenderer.h"
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#include "gtkcellsizerequest.h"
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#include "gtkintl.h"
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#define DEBUG_CELL_SIZE_REQUEST 0
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GType
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gtk_cell_size_request_get_type (void)
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{
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static GType cell_size_request_type = 0;
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if (G_UNLIKELY(!cell_size_request_type))
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{
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cell_size_request_type =
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g_type_register_static_simple (G_TYPE_INTERFACE, I_("GtkCellSizeRequest"),
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sizeof (GtkCellSizeRequestIface),
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NULL, 0, NULL, 0);
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g_type_interface_add_prerequisite (cell_size_request_type, GTK_TYPE_CELL_RENDERER);
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}
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return cell_size_request_type;
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}
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/**
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* gtk_cell_size_request_get_request_mode:
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* @cell: a #GtkCellSizeRequest instance
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*
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* Gets whether the cell renderer prefers a height-for-width layout
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* or a width-for-height layout.
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*
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* Returns: The #GtkSizeRequestMode preferred by this renderer.
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*
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* Since: 3.0
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*/
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GtkSizeRequestMode
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gtk_cell_size_request_get_request_mode (GtkCellSizeRequest *cell)
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{
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GtkCellSizeRequestIface *iface;
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g_return_val_if_fail (GTK_IS_CELL_SIZE_REQUEST (cell), FALSE);
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iface = GTK_CELL_SIZE_REQUEST_GET_IFACE (cell);
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if (iface->get_request_mode)
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return iface->get_request_mode (cell);
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/* By default cell renderers are height-for-width. */
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return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
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}
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/**
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* gtk_cell_size_request_get_width:
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* @cell: a #GtkCellSizeRequest instance
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* @widget: the #GtkWidget this cell will be rendering to
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* @minimum_size: location to store the minimum size, or %NULL
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* @natural_size: location to store the natural size, or %NULL
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*
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* Retreives a renderer's natural size when rendered to @widget.
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*
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* Since: 3.0
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*/
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void
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gtk_cell_size_request_get_width (GtkCellSizeRequest *cell,
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GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size)
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{
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GtkCellSizeRequestIface *iface;
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gint width;
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g_return_if_fail (GTK_IS_CELL_SIZE_REQUEST (cell));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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g_return_if_fail (NULL != minimum_size || NULL != natural_size);
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gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), &width, NULL);
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if (width < 0)
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{
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iface = GTK_CELL_SIZE_REQUEST_GET_IFACE (cell);
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iface->get_width (cell, widget, minimum_size, natural_size);
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}
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else
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{
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if (minimum_size)
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*minimum_size = width;
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if (natural_size)
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*natural_size = width;
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}
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#if DEBUG_CELL_SIZE_REQUEST
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g_message ("%s returning minimum width: %d and natural width: %d",
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G_OBJECT_TYPE_NAME (cell),
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minimum_size ? *minimum_size : 20000,
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natural_size ? *natural_size : 20000);
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#endif
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}
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/**
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* gtk_cell_size_request_get_height:
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* @cell: a #GtkCellSizeRequest instance
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* @widget: the #GtkWidget this cell will be rendering to
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* @minimum_size: location to store the minimum size, or %NULL
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* @natural_size: location to store the natural size, or %NULL
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*
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* Retreives a renderer's natural size when rendered to @widget.
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*
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* Since: 3.0
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*/
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void
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gtk_cell_size_request_get_height (GtkCellSizeRequest *cell,
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GtkWidget *widget,
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gint *minimum_size,
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gint *natural_size)
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{
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GtkCellSizeRequestIface *iface;
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gint height;
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g_return_if_fail (GTK_IS_CELL_SIZE_REQUEST (cell));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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g_return_if_fail (NULL != minimum_size || NULL != natural_size);
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gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), NULL, &height);
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if (height < 0)
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{
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iface = GTK_CELL_SIZE_REQUEST_GET_IFACE (cell);
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iface->get_height (cell, widget, minimum_size, natural_size);
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}
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else
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{
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if (minimum_size)
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*minimum_size = height;
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if (natural_size)
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*natural_size = height;
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}
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#if DEBUG_CELL_SIZE_REQUEST
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g_message ("%s returning minimum height: %d and natural height: %d",
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G_OBJECT_TYPE_NAME (cell),
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minimum_size ? *minimum_size : 20000,
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natural_size ? *natural_size : 20000);
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#endif
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}
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/**
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* gtk_cell_size_request_get_width_for_height:
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* @cell: a #GtkCellSizeRequest instance
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* @widget: the #GtkWidget this cell will be rendering to
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* @height: the size which is available for allocation
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* @minimum_width: location for storing the minimum size, or %NULL
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* @natural_width: location for storing the preferred size, or %NULL
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*
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* Retreives a cell renderers's minimum and natural width if it were rendered to
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* @widget with the specified @height.
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*
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* Since: 3.0
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*/
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void
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gtk_cell_size_request_get_width_for_height (GtkCellSizeRequest *cell,
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GtkWidget *widget,
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gint height,
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gint *minimum_width,
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gint *natural_width)
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{
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GtkCellSizeRequestIface *iface;
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gint width;
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g_return_if_fail (GTK_IS_CELL_SIZE_REQUEST (cell));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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g_return_if_fail (NULL != minimum_width || NULL != natural_width);
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gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), &width, NULL);
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if (width < 0)
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{
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iface = GTK_CELL_SIZE_REQUEST_GET_IFACE (cell);
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iface->get_width_for_height (cell, widget, height, minimum_width, natural_width);
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}
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else
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{
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if (minimum_width)
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*minimum_width = width;
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if (natural_width)
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*natural_width = width;
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}
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#if DEBUG_CELL_SIZE_REQUEST
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g_message ("%s width for height: %d is minimum %d and natural: %d",
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G_OBJECT_TYPE_NAME (cell), height,
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minimum_width ? *minimum_width : 20000,
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natural_width ? *natural_width : 20000);
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#endif
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}
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/**
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* gtk_cell_size_request_get_height_for_width:
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* @cell: a #GtkCellSizeRequest instance
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* @widget: the #GtkWidget this cell will be rendering to
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* @width: the size which is available for allocation
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* @minimum_height: location for storing the minimum size, or %NULL
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* @natural_height: location for storing the preferred size, or %NULL
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*
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* Retreives a cell renderers's minimum and natural height if it were rendered to
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* @widget with the specified @width.
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*
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* Since: 3.0
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*/
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void
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gtk_cell_size_request_get_height_for_width (GtkCellSizeRequest *cell,
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GtkWidget *widget,
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gint width,
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gint *minimum_height,
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gint *natural_height)
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{
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GtkCellSizeRequestIface *iface;
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gint height;
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g_return_if_fail (GTK_IS_CELL_SIZE_REQUEST (cell));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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g_return_if_fail (NULL != minimum_height || NULL != natural_height);
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gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), NULL, &height);
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if (height < 0)
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{
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iface = GTK_CELL_SIZE_REQUEST_GET_IFACE (cell);
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iface->get_height_for_width (cell, widget, width, minimum_height, natural_height);
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}
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else
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{
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if (minimum_height)
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*minimum_height = height;
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if (natural_height)
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*natural_height = height;
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}
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#if DEBUG_CELL_SIZE_REQUEST
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g_message ("%s height for width: %d is minimum %d and natural: %d",
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G_OBJECT_TYPE_NAME (cell), width,
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minimum_height ? *minimum_height : 20000,
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natural_height ? *natural_height : 20000);
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#endif
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}
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/**
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* gtk_cell_size_request_get_size:
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* @cell: a #GtkCellSizeRequest instance
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* @widget: the #GtkWidget this cell will be rendering to
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* @request_natural: Whether to base the contextual request off of the
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* base natural or the base minimum
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* @minimum_size: (out) (allow-none): location for storing the minimum size, or %NULL
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* @natural_size: (out) (allow-none): location for storing the natural size, or %NULL
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*
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* Retrieves the minimum and natural size of a cell taking
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* into account the widget's preference for height-for-width management.
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*
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* If request_natural is specified, the non-contextual natural value will
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* be used to make the contextual request; otherwise the minimum will be used.
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*
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* Since: 3.0
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*/
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void
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gtk_cell_size_request_get_size (GtkCellSizeRequest *cell,
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GtkWidget *widget,
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GtkRequisition *minimum_size,
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GtkRequisition *natural_size)
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{
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gint min_width, nat_width;
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gint min_height, nat_height;
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g_return_if_fail (GTK_IS_CELL_SIZE_REQUEST (cell));
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if (gtk_cell_size_request_get_request_mode (cell) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
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{
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gtk_cell_size_request_get_width (cell, widget, &min_width, &nat_width);
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if (minimum_size)
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{
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minimum_size->width = min_width;
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gtk_cell_size_request_get_height_for_width (cell, widget, min_width,
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&minimum_size->height, NULL);
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}
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if (natural_size)
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{
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natural_size->width = nat_width;
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gtk_cell_size_request_get_height_for_width (cell, widget, nat_width,
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NULL, &natural_size->height);
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}
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}
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else /* GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT */
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{
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gtk_cell_size_request_get_height (cell, widget, &min_height, &nat_height);
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if (minimum_size)
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{
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minimum_size->height = min_height;
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gtk_cell_size_request_get_width_for_height (cell, widget, min_height,
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&minimum_size->width, NULL);
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}
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if (natural_size)
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{
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natural_size->height = nat_height;
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gtk_cell_size_request_get_width_for_height (cell, widget, nat_height,
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NULL, &natural_size->width);
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}
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}
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}
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