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https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-14 04:31:09 +00:00
gtk: Add GtkBitmask
The CSS code likes to have that very much.
This commit is contained in:
Benjamin Otte
parent
f7d3ca46f7
commit
45b9193290
@ -404,6 +404,7 @@ gtk_private_h_sources = \
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gtkappchoosermodule.h \
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gtkappchooseronline.h \
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gtkbindingsprivate.h \
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gtkbitmaskprivate.h \
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gtkborderimageprivate.h \
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gtkboxprivate.h \
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gtkbuilderprivate.h \
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@ -547,6 +548,7 @@ gtk_base_c_sources = \
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gtkbbox.c \
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gtkbin.c \
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gtkbindings.c \
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gtkbitmask.c \
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gtkborder.c \
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gtkborderimage.c \
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gtkbox.c \
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279
gtk/gtkbitmask.c
Normal file
279
gtk/gtkbitmask.c
Normal file
@ -0,0 +1,279 @@
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/*
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* Copyright © 2011 Red Hat Inc.
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#include <config.h>
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#define GTK_INSIDE_BITMASK_C
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#include "gtk/gtkbitmaskprivate.h"
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#define VALUE_TYPE gsize
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#define VALUE_SIZE_BITS (sizeof (VALUE_TYPE) * 8)
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#define VALUE_BIT(idx) (((VALUE_TYPE) 1) << (idx))
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GtkBitmask *
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_gtk_bitmask_new (void)
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{
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return g_array_new (FALSE, TRUE, sizeof (VALUE_TYPE));
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}
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GtkBitmask *
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_gtk_bitmask_copy (const GtkBitmask *mask)
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{
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GtkBitmask *copy;
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g_return_val_if_fail (mask != NULL, NULL);
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copy = _gtk_bitmask_new ();
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_gtk_bitmask_union (copy, mask);
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return copy;
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}
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void
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_gtk_bitmask_free (GtkBitmask *mask)
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{
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g_return_if_fail (mask != NULL);
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g_array_free (mask, TRUE);
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}
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void
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_gtk_bitmask_print (const GtkBitmask *mask,
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GString *string)
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{
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int i;
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g_return_if_fail (mask != NULL);
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g_return_if_fail (string != NULL);
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for (i = mask->len * VALUE_SIZE_BITS - 1; i >= 0; i--)
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{
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if (_gtk_bitmask_get (mask, i))
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break;
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}
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if (i < 0)
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{
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g_string_append_c (string, '0');
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return;
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}
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for (; i >= 0; i--)
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{
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g_string_append_c (string, _gtk_bitmask_get (mask, i) ? '1' : '0');
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}
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}
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char *
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_gtk_bitmask_to_string (const GtkBitmask *mask)
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{
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GString *string;
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string = g_string_new (NULL);
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_gtk_bitmask_print (mask, string);
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return g_string_free (string, FALSE);
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}
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/* NB: Call this function whenever the
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* array might have become too large.
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* _gtk_bitmask_is_empty() depends on this.
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*/
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static void
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gtk_bitmask_shrink (GtkBitmask *mask)
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{
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guint i;
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for (i = mask->len; i; i--)
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{
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if (g_array_index (mask, VALUE_TYPE, i - 1))
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break;
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}
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g_array_set_size (mask, i);
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}
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void
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_gtk_bitmask_intersect (GtkBitmask *mask,
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const GtkBitmask *other)
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{
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guint i;
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g_return_if_fail (mask != NULL);
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g_return_if_fail (other != NULL);
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g_array_set_size (mask, MIN (mask->len, other->len));
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for (i = 0; i < mask->len; i++)
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{
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g_array_index (mask, VALUE_TYPE, i) &= g_array_index (other, VALUE_TYPE, i);
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}
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gtk_bitmask_shrink (mask);
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}
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void
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_gtk_bitmask_union (GtkBitmask *mask,
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const GtkBitmask *other)
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{
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guint i;
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g_return_if_fail (mask != NULL);
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g_return_if_fail (other != NULL);
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g_array_set_size (mask, MAX (mask->len, other->len));
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for (i = 0; i < other->len; i++)
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{
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g_array_index (mask, VALUE_TYPE, i) |= g_array_index (other, VALUE_TYPE, i);
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}
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}
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void
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_gtk_bitmask_subtract (GtkBitmask *mask,
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const GtkBitmask *other)
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{
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guint i;
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g_return_if_fail (mask != NULL);
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g_return_if_fail (other != NULL);
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for (i = 0; i < other->len; i++)
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{
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g_array_index (mask, VALUE_TYPE, i) &= ~g_array_index (other, VALUE_TYPE, i);
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}
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gtk_bitmask_shrink (mask);
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}
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static void
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gtk_bitmask_indexes (guint index_,
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guint *array_index,
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guint *bit_index)
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{
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*array_index = index_ / VALUE_SIZE_BITS;
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*bit_index = index_ % VALUE_SIZE_BITS;
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}
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gboolean
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_gtk_bitmask_get (const GtkBitmask *mask,
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guint index_)
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{
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guint array_index, bit_index;
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g_return_val_if_fail (mask != NULL, FALSE);
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gtk_bitmask_indexes (index_, &array_index, &bit_index);
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if (array_index >= mask->len)
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return FALSE;
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return (g_array_index (mask, VALUE_TYPE, array_index) & VALUE_BIT (bit_index)) ? TRUE : FALSE;
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}
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void
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_gtk_bitmask_set (GtkBitmask *mask,
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guint index_,
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gboolean value)
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{
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guint array_index, bit_index;
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g_return_if_fail (mask != NULL);
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gtk_bitmask_indexes (index_, &array_index, &bit_index);
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if (value)
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{
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if (array_index >= mask->len)
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g_array_set_size (mask, array_index + 1);
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g_array_index (mask, VALUE_TYPE, array_index) |= VALUE_BIT (bit_index);
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}
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else
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{
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if (array_index < mask->len)
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{
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g_array_index (mask, VALUE_TYPE, array_index) &= ~ VALUE_BIT (bit_index);
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gtk_bitmask_shrink (mask);
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}
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}
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}
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void
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_gtk_bitmask_invert_range (GtkBitmask *mask,
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guint start,
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guint end)
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{
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guint i;
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g_return_if_fail (mask != NULL);
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g_return_if_fail (start < end);
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/* I CAN HAS SPEEDUP? */
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for (i = start; i < end; i++)
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_gtk_bitmask_set (mask, i, !_gtk_bitmask_get (mask, i));
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}
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gboolean
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_gtk_bitmask_is_empty (const GtkBitmask *mask)
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{
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g_return_val_if_fail (mask != NULL, FALSE);
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return mask->len == 0;
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}
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gboolean
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_gtk_bitmask_equals (const GtkBitmask *mask,
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const GtkBitmask *other)
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{
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guint i;
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g_return_val_if_fail (mask != NULL, FALSE);
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g_return_val_if_fail (other != NULL, FALSE);
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if (mask->len != other->len)
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return FALSE;
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for (i = 0; i < mask->len; i++)
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{
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if (g_array_index (mask, VALUE_TYPE, i) != g_array_index (other, VALUE_TYPE, i))
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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_gtk_bitmask_intersects (const GtkBitmask *mask,
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const GtkBitmask *other)
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{
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int i;
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g_return_val_if_fail (mask != NULL, FALSE);
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g_return_val_if_fail (other != NULL, FALSE);
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for (i = MIN (mask->len, other->len) - 1; i >= 0; i--)
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{
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if (g_array_index (mask, VALUE_TYPE, i) & g_array_index (other, VALUE_TYPE, i))
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return TRUE;
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}
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return FALSE;
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}
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68
gtk/gtkbitmaskprivate.h
Normal file
68
gtk/gtkbitmaskprivate.h
Normal file
@ -0,0 +1,68 @@
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/*
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* Copyright © 2011 Red Hat Inc.
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_BITMASK_PRIVATE_H__
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#define __GTK_BITMASK_PRIVATE_H__
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#include <glib.h>
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G_BEGIN_DECLS
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#ifdef GTK_INSIDE_BITMASK_C
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typedef GArray GtkBitmask;
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#else
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typedef struct _GtkBitmask GtkBitmask;
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#endif
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GtkBitmask * _gtk_bitmask_new (void);
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GtkBitmask * _gtk_bitmask_copy (const GtkBitmask *mask);
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void _gtk_bitmask_free (GtkBitmask *mask);
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char * _gtk_bitmask_to_string (const GtkBitmask *mask);
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void _gtk_bitmask_print (const GtkBitmask *mask,
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GString *string);
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void _gtk_bitmask_intersect (GtkBitmask *mask,
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const GtkBitmask *other);
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void _gtk_bitmask_union (GtkBitmask *mask,
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const GtkBitmask *other);
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void _gtk_bitmask_subtract (GtkBitmask *mask,
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const GtkBitmask *other);
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gboolean _gtk_bitmask_get (const GtkBitmask *mask,
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guint index_);
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void _gtk_bitmask_set (GtkBitmask *mask,
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guint index_,
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gboolean value);
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void _gtk_bitmask_invert_range (GtkBitmask *mask,
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guint start,
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guint end);
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gboolean _gtk_bitmask_is_empty (const GtkBitmask *mask);
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gboolean _gtk_bitmask_equals (const GtkBitmask *mask,
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const GtkBitmask *other);
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gboolean _gtk_bitmask_intersects (const GtkBitmask *mask,
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const GtkBitmask *other);
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G_END_DECLS
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#endif /* __GTK_BITMASK_PRIVATE_H__ */
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