forked from AuroraMiddleware/gtk
606 lines
16 KiB
C
606 lines
16 KiB
C
/* gtkcellareaiter.c
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*
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* Copyright (C) 2010 Openismus GmbH
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*
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* Authors:
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* Tristan Van Berkom <tristanvb@openismus.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 "gtkintl.h"
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#include "gtkmarshalers.h"
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#include "gtkcellareaiter.h"
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/* GObjectClass */
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static void gtk_cell_area_iter_finalize (GObject *object);
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static void gtk_cell_area_iter_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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/* GtkCellAreaIterClass */
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static void gtk_cell_area_iter_real_flush_preferred_width (GtkCellAreaIter *iter);
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static void gtk_cell_area_iter_real_flush_preferred_height_for_width (GtkCellAreaIter *iter,
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gint width);
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static void gtk_cell_area_iter_real_flush_preferred_height (GtkCellAreaIter *iter);
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static void gtk_cell_area_iter_real_flush_preferred_width_for_height (GtkCellAreaIter *iter,
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gint height);
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/* CachedSize management */
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typedef struct {
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gint min_size;
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gint nat_size;
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} CachedSize;
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static CachedSize *cached_size_new (gint min_size, gint nat_size);
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static void cached_size_free (CachedSize *size);
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struct _GtkCellAreaIterPrivate
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{
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gint min_width;
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gint nat_width;
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gint min_height;
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gint nat_height;
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GHashTable *widths;
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GHashTable *heights;
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};
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enum {
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PROP_0,
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PROP_MIN_WIDTH,
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PROP_NAT_WIDTH,
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PROP_MIN_HEIGHT,
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PROP_NAT_HEIGHT
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};
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enum {
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SIGNAL_WIDTH_CHANGED,
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SIGNAL_HEIGHT_CHANGED,
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LAST_SIGNAL
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};
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static guint cell_area_iter_signals[LAST_SIGNAL] = { 0 };
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G_DEFINE_TYPE (GtkCellAreaIter, gtk_cell_area_iter, G_TYPE_OBJECT);
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static void
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gtk_cell_area_iter_init (GtkCellAreaIter *iter)
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{
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GtkCellAreaIterPrivate *priv;
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iter->priv = G_TYPE_INSTANCE_GET_PRIVATE (iter,
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GTK_TYPE_CELL_AREA_ITER,
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GtkCellAreaIterPrivate);
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priv = iter->priv;
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priv->min_width = -1;
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priv->nat_width = -1;
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priv->min_height = -1;
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priv->nat_height = -1;
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priv->widths = g_hash_table_new_full (g_direct_hash, g_direct_equal,
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NULL, (GDestroyNotify)cached_size_free);
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priv->heights = g_hash_table_new_full (g_direct_hash, g_direct_equal,
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NULL, (GDestroyNotify)cached_size_free);
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}
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static void
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gtk_cell_area_iter_class_init (GtkCellAreaIterClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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/* GObjectClass */
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object_class->finalize = gtk_cell_area_iter_finalize;
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object_class->get_property = gtk_cell_area_iter_get_property;
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class->flush_preferred_width = gtk_cell_area_iter_real_flush_preferred_width;
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class->flush_preferred_height_for_width = gtk_cell_area_iter_real_flush_preferred_height_for_width;
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class->flush_preferred_height = gtk_cell_area_iter_real_flush_preferred_height;
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class->flush_preferred_width_for_height = gtk_cell_area_iter_real_flush_preferred_width_for_height;
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cell_area_iter_signals[SIGNAL_HEIGHT_CHANGED] =
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g_signal_new (I_("height-changed"),
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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0, /* Class offset (just a notification, no class handler) */
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NULL, NULL,
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_gtk_marshal_VOID__INT_INT_INT,
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G_TYPE_NONE, 3,
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G_TYPE_INT, G_TYPE_INT, G_TYPE_INT);
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cell_area_iter_signals[SIGNAL_WIDTH_CHANGED] =
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g_signal_new (I_("width-changed"),
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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0, /* Class offset (just a notification, no class handler) */
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NULL, NULL,
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_gtk_marshal_VOID__INT_INT_INT,
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G_TYPE_NONE, 3,
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G_TYPE_INT, G_TYPE_INT, G_TYPE_INT);
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g_object_class_install_property (object_class,
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PROP_MIN_WIDTH,
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g_param_spec_int ("minimum-width",
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P_("Minimum Width"),
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P_("Minimum cached width"),
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-1,
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G_MAXINT,
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-1,
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G_PARAM_READABLE));
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g_object_class_install_property (object_class,
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PROP_NAT_WIDTH,
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g_param_spec_int ("natural-width",
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P_("Minimum Width"),
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P_("Minimum cached width"),
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-1,
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G_MAXINT,
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-1,
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G_PARAM_READABLE));
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g_object_class_install_property (object_class,
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PROP_MIN_HEIGHT,
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g_param_spec_int ("minimum-height",
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P_("Minimum Height"),
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P_("Minimum cached height"),
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-1,
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G_MAXINT,
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-1,
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G_PARAM_READABLE));
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g_object_class_install_property (object_class,
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PROP_NAT_HEIGHT,
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g_param_spec_int ("natural-height",
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P_("Minimum Height"),
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P_("Minimum cached height"),
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-1,
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G_MAXINT,
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-1,
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G_PARAM_READABLE));
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g_type_class_add_private (object_class, sizeof (GtkCellAreaIterPrivate));
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}
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/*************************************************************
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* Cached Sizes *
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*************************************************************/
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static CachedSize *
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cached_size_new (gint min_size,
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gint nat_size)
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{
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CachedSize *size = g_slice_new (CachedSize);
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size->min_size = min_size;
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size->nat_size = nat_size;
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return size;
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}
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static void
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cached_size_free (CachedSize *size)
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{
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g_slice_free (CachedSize, size);
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}
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/*************************************************************
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* GObjectClass *
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*************************************************************/
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static void
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gtk_cell_area_iter_finalize (GObject *object)
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{
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GtkCellAreaIter *iter = GTK_CELL_AREA_ITER (object);
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GtkCellAreaIterPrivate *priv = iter->priv;
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g_hash_table_destroy (priv->widths);
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g_hash_table_destroy (priv->heights);
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G_OBJECT_CLASS (gtk_cell_area_iter_parent_class)->finalize (object);
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}
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static void
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gtk_cell_area_iter_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkCellAreaIter *iter = GTK_CELL_AREA_ITER (object);
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GtkCellAreaIterPrivate *priv = iter->priv;
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switch (prop_id)
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{
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case PROP_MIN_WIDTH:
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g_value_set_int (value, priv->min_width);
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break;
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case PROP_NAT_WIDTH:
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g_value_set_int (value, priv->nat_width);
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break;
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case PROP_MIN_HEIGHT:
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g_value_set_int (value, priv->min_height);
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break;
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case PROP_NAT_HEIGHT:
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g_value_set_int (value, priv->nat_height);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/*************************************************************
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* GtkCellAreaIterClass *
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*************************************************************/
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static void
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gtk_cell_area_iter_real_flush_preferred_width (GtkCellAreaIter *iter)
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{
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GtkCellAreaIterPrivate *priv = iter->priv;
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priv->min_width = -1;
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priv->nat_width = -1;
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g_object_freeze_notify (G_OBJECT (iter));
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g_object_notify (G_OBJECT (iter), "minimum-width");
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g_object_notify (G_OBJECT (iter), "natural-width");
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g_object_thaw_notify (G_OBJECT (iter));
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}
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static void
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gtk_cell_area_iter_real_flush_preferred_height_for_width (GtkCellAreaIter *iter,
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gint width)
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{
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GtkCellAreaIterPrivate *priv = iter->priv;
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/* Flush all sizes for special -1 value */
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if (width < 0)
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g_hash_table_remove_all (priv->heights);
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else
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g_hash_table_remove (priv->heights, GINT_TO_POINTER (width));
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/* XXX Should we bother signalling removed values as "size-changed" signals ? */
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}
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static void
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gtk_cell_area_iter_real_flush_preferred_height (GtkCellAreaIter *iter)
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{
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GtkCellAreaIterPrivate *priv = iter->priv;
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priv->min_height = -1;
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priv->nat_height = -1;
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g_object_freeze_notify (G_OBJECT (iter));
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g_object_notify (G_OBJECT (iter), "minimum-height");
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g_object_notify (G_OBJECT (iter), "natural-height");
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g_object_thaw_notify (G_OBJECT (iter));
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}
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static void
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gtk_cell_area_iter_real_flush_preferred_width_for_height (GtkCellAreaIter *iter,
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gint height)
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{
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GtkCellAreaIterPrivate *priv = iter->priv;
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/* Flush all sizes for special -1 value */
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if (height < 0)
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g_hash_table_remove_all (priv->widths);
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else
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g_hash_table_remove (priv->widths, GINT_TO_POINTER (height));
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/* XXX Should we bother signalling removed values as "size-changed" signals ? */
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}
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/*************************************************************
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* API *
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*************************************************************/
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void
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gtk_cell_area_iter_get_preferred_width (GtkCellAreaIter *iter,
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gint *minimum_width,
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gint *natural_width)
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{
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GtkCellAreaIterPrivate *priv;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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if (minimum_width)
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*minimum_width = priv->min_width;
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if (natural_width)
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*natural_width = priv->nat_width;
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}
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void
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gtk_cell_area_iter_get_preferred_height_for_width (GtkCellAreaIter *iter,
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gint for_width,
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gint *minimum_height,
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gint *natural_height)
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{
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GtkCellAreaIterPrivate *priv;
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CachedSize *size;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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size = g_hash_table_lookup (priv->heights, GINT_TO_POINTER (for_width));
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if (size)
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{
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if (minimum_height)
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*minimum_height = size->min_size;
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if (natural_height)
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*natural_height = size->nat_size;
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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 = -1;
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if (natural_height)
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*natural_height = -1;
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}
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}
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void
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gtk_cell_area_iter_get_preferred_height (GtkCellAreaIter *iter,
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gint *minimum_height,
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gint *natural_height)
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{
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GtkCellAreaIterPrivate *priv;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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if (minimum_height)
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*minimum_height = priv->min_height;
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if (natural_height)
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*natural_height = priv->nat_height;
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}
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void
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gtk_cell_area_iter_get_preferred_width_for_height (GtkCellAreaIter *iter,
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gint for_height,
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gint *minimum_width,
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gint *natural_width)
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{
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GtkCellAreaIterPrivate *priv;
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CachedSize *size;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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size = g_hash_table_lookup (priv->widths, GINT_TO_POINTER (for_height));
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if (size)
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{
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if (minimum_width)
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*minimum_width = size->min_size;
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if (natural_width)
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*natural_width = size->nat_size;
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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 = -1;
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if (natural_width)
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*natural_width = -1;
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}
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}
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void
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gtk_cell_area_iter_push_preferred_width (GtkCellAreaIter *iter,
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gint minimum_width,
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gint natural_width)
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{
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GtkCellAreaIterPrivate *priv;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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g_object_freeze_notify (G_OBJECT (iter));
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if (minimum_width > priv->min_width)
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{
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priv->min_width = minimum_width;
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g_object_notify (G_OBJECT (iter), "minimum-width");
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}
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if (natural_width > priv->nat_width)
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{
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priv->nat_width = natural_width;
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g_object_notify (G_OBJECT (iter), "natural-width");
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}
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g_object_thaw_notify (G_OBJECT (iter));
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}
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void
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gtk_cell_area_iter_push_preferred_height_for_width (GtkCellAreaIter *iter,
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gint for_width,
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gint minimum_height,
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gint natural_height)
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{
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GtkCellAreaIterPrivate *priv;
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CachedSize *size;
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gboolean changed = FALSE;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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size = g_hash_table_lookup (priv->heights, GINT_TO_POINTER (for_width));
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if (!size)
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{
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size = cached_size_new (minimum_height, natural_height);
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g_hash_table_insert (priv->heights, GINT_TO_POINTER (for_width), size);
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changed = TRUE;
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}
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else
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{
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if (minimum_height > size->min_size)
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{
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size->min_size = minimum_height;
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changed = TRUE;
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}
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if (natural_height > size->nat_size)
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{
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size->nat_size = natural_height;
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changed = TRUE;
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}
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}
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if (changed)
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g_signal_emit (iter, cell_area_iter_signals[SIGNAL_HEIGHT_CHANGED], 0,
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for_width, size->min_size, size->nat_size);
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}
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void
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gtk_cell_area_iter_push_preferred_height (GtkCellAreaIter *iter,
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gint minimum_height,
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gint natural_height)
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{
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GtkCellAreaIterPrivate *priv;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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g_object_freeze_notify (G_OBJECT (iter));
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if (minimum_height > priv->min_height)
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{
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priv->min_height = minimum_height;
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g_object_notify (G_OBJECT (iter), "minimum-height");
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}
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if (natural_height > priv->nat_height)
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{
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priv->nat_height = natural_height;
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g_object_notify (G_OBJECT (iter), "natural-height");
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}
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g_object_thaw_notify (G_OBJECT (iter));
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}
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void
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gtk_cell_area_iter_push_preferred_width_for_height (GtkCellAreaIter *iter,
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gint for_height,
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gint minimum_width,
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gint natural_width)
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{
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GtkCellAreaIterPrivate *priv;
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CachedSize *size;
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gboolean changed = FALSE;
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g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
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priv = iter->priv;
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size = g_hash_table_lookup (priv->widths, GINT_TO_POINTER (for_height));
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if (!size)
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{
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size = cached_size_new (minimum_width, natural_width);
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g_hash_table_insert (priv->widths, GINT_TO_POINTER (for_height), size);
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changed = TRUE;
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}
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else
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{
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if (minimum_width > size->min_size)
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{
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size->min_size = minimum_width;
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changed = TRUE;
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}
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|
if (natural_width > size->nat_size)
|
|
{
|
|
size->nat_size = natural_width;
|
|
changed = TRUE;
|
|
}
|
|
}
|
|
|
|
if (changed)
|
|
g_signal_emit (iter, cell_area_iter_signals[SIGNAL_WIDTH_CHANGED], 0,
|
|
for_height, size->min_size, size->nat_size);
|
|
}
|
|
|
|
void
|
|
gtk_cell_area_iter_flush (GtkCellAreaIter *iter)
|
|
{
|
|
g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
|
|
|
|
gtk_cell_area_iter_flush_preferred_width (iter);
|
|
gtk_cell_area_iter_flush_preferred_height_for_width (iter, -1);
|
|
gtk_cell_area_iter_flush_preferred_height (iter);
|
|
gtk_cell_area_iter_flush_preferred_width_for_height (iter, -1);
|
|
}
|
|
|
|
void
|
|
gtk_cell_area_iter_flush_preferred_width (GtkCellAreaIter *iter)
|
|
{
|
|
g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
|
|
|
|
GTK_CELL_AREA_ITER_GET_CLASS (iter)->flush_preferred_width (iter);
|
|
}
|
|
|
|
void
|
|
gtk_cell_area_iter_flush_preferred_height_for_width (GtkCellAreaIter *iter,
|
|
gint for_width)
|
|
{
|
|
g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
|
|
|
|
GTK_CELL_AREA_ITER_GET_CLASS (iter)->flush_preferred_height_for_width (iter, for_width);
|
|
}
|
|
|
|
void
|
|
gtk_cell_area_iter_flush_preferred_height (GtkCellAreaIter *iter)
|
|
{
|
|
g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
|
|
|
|
GTK_CELL_AREA_ITER_GET_CLASS (iter)->flush_preferred_height (iter);
|
|
}
|
|
|
|
void
|
|
gtk_cell_area_iter_flush_preferred_width_for_height (GtkCellAreaIter *iter,
|
|
gint for_height)
|
|
{
|
|
g_return_if_fail (GTK_IS_CELL_AREA_ITER (iter));
|
|
|
|
GTK_CELL_AREA_ITER_GET_CLASS (iter)->flush_preferred_width_for_height (iter, for_height);
|
|
}
|