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medit/moo/gtksourceview/gtksourcestyle.c

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; coding: utf-8 -*-
* gtksourcestyle.c
*
* Copyright (C) 2003 - Paolo Maggi <paolo.maggi@polito.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "gtksourcestyle-private.h"
#include "gtksourceview-i18n.h"
static void gtk_source_style_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_source_style_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
typedef GObjectClass GtkSourceStyleClass;
G_DEFINE_TYPE (GtkSourceStyle, gtk_source_style, G_TYPE_OBJECT)
enum {
PROP_0,
PROP_LINE_BACKGROUND,
PROP_LINE_BACKGROUND_SET,
PROP_BACKGROUND,
PROP_BACKGROUND_SET,
PROP_FOREGROUND,
PROP_FOREGROUND_SET,
PROP_BOLD,
PROP_BOLD_SET,
PROP_ITALIC,
PROP_ITALIC_SET,
PROP_UNDERLINE,
PROP_UNDERLINE_SET,
PROP_STRIKETHROUGH,
PROP_STRIKETHROUGH_SET
};
static void
gtk_source_style_class_init (GtkSourceStyleClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gtk_source_style_set_property;
object_class->get_property = gtk_source_style_get_property;
/* All properties are CONSTRUCT_ONLY so we can safely return references
* from style_scheme_get_style(). But style scheme is of course cheating
* and sets everything after construction (but nobody can notice it). */
g_object_class_install_property (object_class,
PROP_LINE_BACKGROUND,
g_param_spec_string ("line-background",
_("Line background"),
_("Line background color"),
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_BACKGROUND,
g_param_spec_string ("background",
_("Background"),
_("Background color"),
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_FOREGROUND,
g_param_spec_string ("foreground",
_("Foreground"),
_("Foreground color"),
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_BOLD,
g_param_spec_boolean ("bold",
_("Bold"),
_("Bold"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_ITALIC,
g_param_spec_boolean ("italic",
_("Italic"),
_("Italic"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_UNDERLINE,
g_param_spec_boolean ("underline",
_("Underline"),
_("Underline"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_STRIKETHROUGH,
g_param_spec_boolean ("strikethrough",
_("Strikethrough"),
_("Strikethrough"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_LINE_BACKGROUND_SET,
g_param_spec_boolean ("line-background-set",
_("Line background set"),
_("Whether line background color is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_FOREGROUND_SET,
g_param_spec_boolean ("foreground-set",
_("Foreground set"),
_("Whether foreground color is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_BACKGROUND_SET,
g_param_spec_boolean ("background-set",
_("Background set"),
_("Whether background color is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_BOLD_SET,
g_param_spec_boolean ("bold-set",
_("Bold set"),
_("Whether bold attribute is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_ITALIC_SET,
g_param_spec_boolean ("italic-set",
_("Italic set"),
_("Whether italic attribute is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_UNDERLINE_SET,
g_param_spec_boolean ("underline-set",
_("Underline set"),
_("Whether underline attribute is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_STRIKETHROUGH_SET,
g_param_spec_boolean ("strikethrough-set",
_("Strikethrough set"),
_("Whether strikethrough attribute is set"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
}
static void
gtk_source_style_init (GtkSourceStyle *style)
{
style->foreground = NULL;
style->background = NULL;
style->line_background = NULL;
}
#define SET_MASK(style,name) (style)->mask |= (GTK_SOURCE_STYLE_USE_##name)
#define UNSET_MASK(style,name) (style)->mask &= (GTK_SOURCE_STYLE_USE_##name)
#define MODIFY_MASK(style,value,name) \
G_STMT_START { \
if (g_value_get_boolean (value)) \
SET_MASK (style, name); \
else \
UNSET_MASK (style, name); \
} G_STMT_END
#define GET_MASK(style,value,name) \
g_value_set_boolean (value, ((style)->mask & GTK_SOURCE_STYLE_USE_##name) != 0)
static void
gtk_source_style_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkSourceStyle *style = GTK_SOURCE_STYLE (object);
const gchar *string;
switch (prop_id)
{
case PROP_FOREGROUND:
string = g_value_get_string (value);
if (string != NULL)
{
style->foreground = g_intern_string (string);
SET_MASK (style, FOREGROUND);
}
else
{
style->foreground = NULL;
UNSET_MASK (style, FOREGROUND);
}
break;
case PROP_BACKGROUND:
string = g_value_get_string (value);
if (string != NULL)
{
style->background = g_intern_string (string);
SET_MASK (style, BACKGROUND);
}
else
{
style->background = NULL;
UNSET_MASK (style, BACKGROUND);
}
break;
case PROP_LINE_BACKGROUND:
string = g_value_get_string (value);
if (string != NULL)
{
style->line_background = g_intern_string (string);
SET_MASK (style, LINE_BACKGROUND);
}
else
{
style->line_background = NULL;
UNSET_MASK (style, LINE_BACKGROUND);
}
break;
case PROP_BOLD:
style->bold = g_value_get_boolean (value) != 0;
SET_MASK (style, BOLD);
break;
case PROP_ITALIC:
style->italic = g_value_get_boolean (value) != 0;
SET_MASK (style, ITALIC);
break;
case PROP_UNDERLINE:
style->underline = g_value_get_boolean (value) != 0;
SET_MASK (style, UNDERLINE);
break;
case PROP_STRIKETHROUGH:
style->strikethrough = g_value_get_boolean (value) != 0;
SET_MASK (style, STRIKETHROUGH);
break;
case PROP_FOREGROUND_SET:
MODIFY_MASK (style, value, FOREGROUND);
break;
case PROP_BACKGROUND_SET:
MODIFY_MASK (style, value, BACKGROUND);
break;
case PROP_LINE_BACKGROUND_SET:
MODIFY_MASK (style, value, LINE_BACKGROUND);
break;
case PROP_BOLD_SET:
MODIFY_MASK (style, value, BOLD);
break;
case PROP_ITALIC_SET:
MODIFY_MASK (style, value, ITALIC);
break;
case PROP_UNDERLINE_SET:
MODIFY_MASK (style, value, UNDERLINE);
break;
case PROP_STRIKETHROUGH_SET:
MODIFY_MASK (style, value, STRIKETHROUGH);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_source_style_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkSourceStyle *style = GTK_SOURCE_STYLE (object);
switch (prop_id)
{
case PROP_FOREGROUND:
g_value_set_string (value, style->foreground);
break;
case PROP_BACKGROUND:
g_value_set_string (value, style->background);
break;
case PROP_LINE_BACKGROUND:
g_value_set_string (value, style->line_background);
break;
case PROP_BOLD:
g_value_set_boolean (value, style->bold);
break;
case PROP_ITALIC:
g_value_set_boolean (value, style->italic);
break;
case PROP_UNDERLINE:
g_value_set_boolean (value, style->underline);
break;
case PROP_STRIKETHROUGH:
g_value_set_boolean (value, style->strikethrough);
break;
case PROP_FOREGROUND_SET:
GET_MASK (style, value, FOREGROUND);
break;
case PROP_BACKGROUND_SET:
GET_MASK (style, value, BACKGROUND);
break;
case PROP_LINE_BACKGROUND_SET:
GET_MASK (style, value, LINE_BACKGROUND);
break;
case PROP_BOLD_SET:
GET_MASK (style, value, BOLD);
break;
case PROP_ITALIC_SET:
GET_MASK (style, value, ITALIC);
break;
case PROP_UNDERLINE_SET:
GET_MASK (style, value, UNDERLINE);
break;
case PROP_STRIKETHROUGH_SET:
GET_MASK (style, value, STRIKETHROUGH);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_source_style_copy:
* @style: a #GtkSourceStyle structure to copy.
*
* Creates a copy of @style, that is a new #GtkSourceStyle instance which
* has the same attributes set.
*
* Returns: copy of @style, call g_object_unref() when you are done with it.
*
* Since: 2.0
*/
GtkSourceStyle *
gtk_source_style_copy (const GtkSourceStyle *style)
{
GtkSourceStyle *copy;
g_return_val_if_fail (style != NULL, NULL);
copy = g_object_new (GTK_TYPE_SOURCE_STYLE, NULL);
copy->foreground = style->foreground;
copy->background = style->background;
copy->line_background = style->line_background;
copy->italic = style->italic;
copy->bold = style->bold;
copy->underline = style->underline;
copy->strikethrough = style->strikethrough;
copy->mask = style->mask;
return copy;
}
/**
* _gtk_source_style_apply:
* @style: a #GtkSourceStyle to apply.
* @tag: a #GtkTextTag to apply styles to.
*
* Applies text styles set in @style if it's not %NULL, or
* unsets style fields in @tag set with _gtk_source_style_apply()
* if @style is %NULL. Note that it does not touch fields which
* are not set in @style. To reset everything use @style == %NULL.
*
* Since: 2.0
*/
void
_gtk_source_style_apply (const GtkSourceStyle *style,
GtkTextTag *tag)
{
g_return_if_fail (GTK_IS_TEXT_TAG (tag));
if (style != NULL)
{
g_object_freeze_notify (G_OBJECT (tag));
if (style->mask & GTK_SOURCE_STYLE_USE_BACKGROUND)
g_object_set (tag, "background", style->background, NULL);
if (style->mask & GTK_SOURCE_STYLE_USE_FOREGROUND)
g_object_set (tag, "foreground", style->foreground, NULL);
if (style->mask & GTK_SOURCE_STYLE_USE_LINE_BACKGROUND)
g_object_set (tag, "paragraph-background", style->line_background, NULL);
if (style->mask & GTK_SOURCE_STYLE_USE_ITALIC)
g_object_set (tag, "style", style->italic ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, NULL);
if (style->mask & GTK_SOURCE_STYLE_USE_BOLD)
g_object_set (tag, "weight", style->bold ? PANGO_WEIGHT_BOLD : PANGO_WEIGHT_NORMAL, NULL);
if (style->mask & GTK_SOURCE_STYLE_USE_UNDERLINE)
g_object_set (tag, "underline", style->underline ? PANGO_UNDERLINE_SINGLE : PANGO_UNDERLINE_NONE, NULL);
if (style->mask & GTK_SOURCE_STYLE_USE_STRIKETHROUGH)
g_object_set (tag, "strikethrough", style->strikethrough != 0, NULL);
g_object_thaw_notify (G_OBJECT (tag));
}
else
{
g_object_set (tag,
"background-set", FALSE,
"foreground-set", FALSE,
"paragraph-background-set", FALSE,
"style-set", FALSE,
"weight-set", FALSE,
"underline-set", FALSE,
"strikethrough-set", FALSE,
NULL);
}
}
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