forked from AuroraMiddleware/gtk
363 lines
14 KiB
C
363 lines
14 KiB
C
/* gtkpango.c - pango-related utilities
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*
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* Copyright (c) 2010 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 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, see <http://www.gnu.org/licenses/>.Free
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtkpango.h"
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#include <pango/pangocairo.h>
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#include "gtkintl.h"
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#include "gtkbuilderprivate.h"
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static gboolean
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attr_list_merge_filter (PangoAttribute *attribute,
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gpointer list)
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{
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pango_attr_list_change (list, pango_attribute_copy (attribute));
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return FALSE;
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}
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/*
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* _gtk_pango_attr_list_merge:
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* @into: (nullable): a `PangoAttrList` where attributes are merged
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* @from: (nullable): a `PangoAttrList` with the attributes to merge
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*
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* Merges attributes from @from into @into.
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*
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* Returns: the merged list.
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*/
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PangoAttrList *
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_gtk_pango_attr_list_merge (PangoAttrList *into,
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PangoAttrList *from)
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{
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if (from)
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{
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if (into)
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pango_attr_list_filter (from, attr_list_merge_filter, into);
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else
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return pango_attr_list_ref (from);
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}
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return into;
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}
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static PangoAttribute *
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attribute_from_text (GtkBuilder *builder,
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const char *name,
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const char *value,
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GError **error)
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{
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PangoAttribute *attribute = NULL;
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PangoAttrType type;
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PangoLanguage *language;
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PangoFontDescription *font_desc;
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GdkRGBA *color;
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GValue val = G_VALUE_INIT;
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if (!gtk_builder_value_from_string_type (builder, PANGO_TYPE_ATTR_TYPE, name, &val, error))
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return NULL;
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type = g_value_get_enum (&val);
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g_value_unset (&val);
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switch (type)
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{
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/* PangoAttrLanguage */
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case PANGO_ATTR_LANGUAGE:
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if ((language = pango_language_from_string (value)))
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{
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attribute = pango_attr_language_new (language);
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g_value_init (&val, G_TYPE_INT);
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}
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break;
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/* PangoAttrInt */
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case PANGO_ATTR_STYLE:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STYLE, value, &val, error))
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attribute = pango_attr_style_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_WEIGHT:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_WEIGHT, value, &val, error))
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attribute = pango_attr_weight_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_VARIANT:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_VARIANT, value, &val, error))
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attribute = pango_attr_variant_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_STRETCH:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STRETCH, value, &val, error))
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attribute = pango_attr_stretch_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_UNDERLINE:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_UNDERLINE, value, &val, NULL))
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attribute = pango_attr_underline_new (g_value_get_enum (&val));
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else
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{
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/* XXX: allow boolean for backwards compat, so ignore error */
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/* Deprecate this somehow */
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g_value_unset (&val);
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if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
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attribute = pango_attr_underline_new (g_value_get_boolean (&val));
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}
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break;
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case PANGO_ATTR_STRIKETHROUGH:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
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attribute = pango_attr_strikethrough_new (g_value_get_boolean (&val));
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break;
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case PANGO_ATTR_GRAVITY:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY, value, &val, error))
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attribute = pango_attr_gravity_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_GRAVITY_HINT:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY_HINT, value, &val, error))
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attribute = pango_attr_gravity_hint_new (g_value_get_enum (&val));
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break;
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/* PangoAttrString */
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case PANGO_ATTR_FAMILY:
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attribute = pango_attr_family_new (value);
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g_value_init (&val, G_TYPE_INT);
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break;
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/* PangoAttrSize */
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case PANGO_ATTR_SIZE:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_size_new (g_value_get_int (&val));
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break;
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case PANGO_ATTR_ABSOLUTE_SIZE:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_size_new_absolute (g_value_get_int (&val));
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break;
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/* PangoAttrFontDesc */
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case PANGO_ATTR_FONT_DESC:
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if ((font_desc = pango_font_description_from_string (value)))
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{
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attribute = pango_attr_font_desc_new (font_desc);
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pango_font_description_free (font_desc);
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g_value_init (&val, G_TYPE_INT);
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}
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break;
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/* PangoAttrColor */
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case PANGO_ATTR_FOREGROUND:
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if (gtk_builder_value_from_string_type (builder, GDK_TYPE_RGBA, value, &val, error))
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{
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color = g_value_get_boxed (&val);
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attribute = pango_attr_foreground_new (color->red * 65535,
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color->green * 65535,
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color->blue * 65535);
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}
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break;
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case PANGO_ATTR_BACKGROUND:
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if (gtk_builder_value_from_string_type (builder, GDK_TYPE_RGBA, value, &val, error))
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{
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color = g_value_get_boxed (&val);
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attribute = pango_attr_background_new (color->red * 65535,
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color->green * 65535,
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color->blue * 65535);
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}
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break;
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case PANGO_ATTR_UNDERLINE_COLOR:
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if (gtk_builder_value_from_string_type (builder, GDK_TYPE_RGBA, value, &val, error))
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{
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color = g_value_get_boxed (&val);
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attribute = pango_attr_underline_color_new (color->red * 65535,
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color->green * 65535,
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color->blue * 65535);
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}
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break;
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case PANGO_ATTR_STRIKETHROUGH_COLOR:
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if (gtk_builder_value_from_string_type (builder, GDK_TYPE_RGBA, value, &val, error))
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{
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color = g_value_get_boxed (&val);
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attribute = pango_attr_strikethrough_color_new (color->red * 65535,
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color->green * 65535,
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color->blue * 65535);
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}
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break;
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/* PangoAttrShape */
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case PANGO_ATTR_SHAPE:
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/* Unsupported for now */
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break;
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/* PangoAttrFloat */
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case PANGO_ATTR_SCALE:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE, value, &val, error))
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attribute = pango_attr_scale_new (g_value_get_double (&val));
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break;
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case PANGO_ATTR_LETTER_SPACING:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_letter_spacing_new (g_value_get_int (&val));
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break;
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case PANGO_ATTR_RISE:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_rise_new (g_value_get_int (&val));
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break;
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case PANGO_ATTR_FALLBACK:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
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attribute = pango_attr_fallback_new (g_value_get_boolean (&val));
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break;
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case PANGO_ATTR_FONT_FEATURES:
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attribute = pango_attr_font_features_new (value);
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break;
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case PANGO_ATTR_FOREGROUND_ALPHA:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_foreground_alpha_new ((guint16)g_value_get_int (&val));
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break;
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case PANGO_ATTR_BACKGROUND_ALPHA:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_background_alpha_new ((guint16)g_value_get_int (&val));
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break;
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case PANGO_ATTR_ALLOW_BREAKS:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
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attribute = pango_attr_allow_breaks_new (g_value_get_boolean (&val));
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break;
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case PANGO_ATTR_SHOW:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_SHOW_FLAGS, value, &val, error))
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attribute = pango_attr_show_new (g_value_get_flags (&val));
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break;
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case PANGO_ATTR_INSERT_HYPHENS:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
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attribute = pango_attr_insert_hyphens_new (g_value_get_boolean (&val));
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break;
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case PANGO_ATTR_OVERLINE:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_OVERLINE, value, &val, NULL))
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attribute = pango_attr_overline_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_OVERLINE_COLOR:
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if (gtk_builder_value_from_string_type (builder, GDK_TYPE_RGBA, value, &val, error))
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{
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color = g_value_get_boxed (&val);
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attribute = pango_attr_overline_color_new (color->red * 65535,
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color->green * 65535,
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color->blue * 65535);
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}
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break;
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case PANGO_ATTR_LINE_HEIGHT:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE, value, &val, error))
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attribute = pango_attr_line_height_new (g_value_get_double (&val));
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break;
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case PANGO_ATTR_ABSOLUTE_LINE_HEIGHT:
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if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
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attribute = pango_attr_line_height_new_absolute (g_value_get_int (&val) * PANGO_SCALE);
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break;
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case PANGO_ATTR_TEXT_TRANSFORM:
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if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_TEXT_TRANSFORM, value, &val, error))
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attribute = pango_attr_text_transform_new (g_value_get_enum (&val));
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break;
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case PANGO_ATTR_INVALID:
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default:
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break;
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}
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g_value_unset (&val);
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return attribute;
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}
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void
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gtk_pango_attribute_start_element (GtkBuildableParseContext *context,
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const char *element_name,
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const char **names,
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const char **values,
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gpointer user_data,
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GError **error)
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{
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GtkPangoAttributeParserData *data = user_data;
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if (strcmp (element_name, "attribute") == 0)
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{
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PangoAttribute *attr = NULL;
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const char *name = NULL;
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const char *value = NULL;
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const char *start = NULL;
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const char *end = NULL;
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guint start_val = 0;
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guint end_val = G_MAXUINT;
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GValue val = G_VALUE_INIT;
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if (!_gtk_builder_check_parent (data->builder, context, "attributes", error))
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return;
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if (!g_markup_collect_attributes (element_name, names, values, error,
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G_MARKUP_COLLECT_STRING, "name", &name,
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G_MARKUP_COLLECT_STRING, "value", &value,
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G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "start", &start,
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G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "end", &end,
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G_MARKUP_COLLECT_INVALID))
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{
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_gtk_builder_prefix_error (data->builder, context, error);
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return;
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}
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if (start)
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{
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if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT, start, &val, error))
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{
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_gtk_builder_prefix_error (data->builder, context, error);
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return;
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}
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start_val = g_value_get_uint (&val);
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g_value_unset (&val);
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}
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if (end)
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{
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if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT, end, &val, error))
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{
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_gtk_builder_prefix_error (data->builder, context, error);
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return;
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}
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end_val = g_value_get_uint (&val);
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g_value_unset (&val);
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}
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attr = attribute_from_text (data->builder, name, value, error);
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if (!attr)
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{
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_gtk_builder_prefix_error (data->builder, context, error);
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return;
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}
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attr->start_index = start_val;
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attr->end_index = end_val;
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if (!data->attrs)
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data->attrs = pango_attr_list_new ();
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pango_attr_list_insert (data->attrs, attr);
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}
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else if (strcmp (element_name, "attributes") == 0)
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{
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if (!_gtk_builder_check_parent (data->builder, context, "object", error))
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return;
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if (!g_markup_collect_attributes (element_name, names, values, error,
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G_MARKUP_COLLECT_INVALID, NULL, NULL,
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G_MARKUP_COLLECT_INVALID))
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_gtk_builder_prefix_error (data->builder, context, error);
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}
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else
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{
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_gtk_builder_error_unhandled_tag (data->builder, context,
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"GtkWidget", element_name,
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error);
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}
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}
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