* clutter/clutter-label.c (clutter_label_new_full): Set the terminating NULL which was removed when applying patch for fixing #606. (#645, Gwenole Beauchesne)
1432 lines
37 KiB
C
1432 lines
37 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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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, 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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/**
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* SECTION:clutter-label
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* @short_description: Actor for displaying text
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*
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* #ClutterLabel is a #ClutterActor that displays text using Pango.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-label.h"
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#include "clutter-layout.h"
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#include "clutter-main.h"
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#include "clutter-enum-types.h"
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#include "clutter-private.h"
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#include "clutter-debug.h"
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#include "clutter-units.h"
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#include "pangoclutter.h"
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#define DEFAULT_FONT_NAME "Sans 10"
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static void clutter_layout_iface_init (ClutterLayoutIface *iface);
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G_DEFINE_TYPE_WITH_CODE (ClutterLabel,
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clutter_label,
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CLUTTER_TYPE_ACTOR,
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_LAYOUT,
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clutter_layout_iface_init));
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/* Probably move into main */
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static PangoClutterFontMap *_font_map = NULL;
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static PangoContext *_context = NULL;
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enum
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{
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PROP_0,
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PROP_FONT_NAME,
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PROP_TEXT,
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PROP_COLOR,
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PROP_ATTRIBUTES,
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PROP_USE_MARKUP,
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PROP_ALIGNMENT,
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PROP_WRAP,
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PROP_WRAP_MODE,
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PROP_JUSTIFY,
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PROP_ELLIPSIZE,
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PROP_LAYOUT_FLAGS
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};
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#define CLUTTER_LABEL_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_LABEL, ClutterLabelPrivate))
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struct _ClutterLabelPrivate
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{
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PangoContext *context;
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PangoFontDescription *font_desc;
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ClutterColor fgcol;
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ClutterActorBox allocation;
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gchar *text;
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gchar *font_name;
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gint extents_width;
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gint extents_height;
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guint alignment : 2;
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guint wrap : 1;
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guint use_underline : 1;
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guint use_markup : 1;
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guint ellipsize : 3;
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guint single_line_mode : 1;
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guint wrap_mode : 3;
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guint justify : 1;
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PangoAttrList *attrs;
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PangoAttrList *effective_attrs;
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PangoLayout *layout;
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gint width_chars;
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gint wrap_width;
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};
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static gint
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get_label_char_width (ClutterLabel *label)
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{
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ClutterLabelPrivate *priv = label->priv;
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PangoContext *context;
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PangoFontMetrics *metrics;
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gint char_width, digit_width, char_pixels, w;
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context = pango_layout_get_context (priv->layout);
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metrics = pango_context_get_metrics (context, priv->font_desc,
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pango_context_get_language (context));
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char_width = pango_font_metrics_get_approximate_char_width (metrics);
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digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
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char_pixels = MAX (char_width, digit_width);
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pango_font_metrics_unref (metrics);
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if (priv->width_chars < 0)
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{
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PangoRectangle rect;
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pango_layout_set_width (priv->layout, -1);
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pango_layout_get_extents (priv->layout, NULL, &rect);
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w = char_pixels * 5;
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w = MIN (rect.width, w);
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}
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else
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{
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/* enforce minimum width for ellipsized labels at ~5 chars */
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w = char_pixels * MAX (priv->width_chars, 5);
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}
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return w;
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}
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static gint
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get_label_wrap_width (ClutterLabel *label)
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{
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ClutterLabelPrivate *priv = label->priv;
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if (priv->wrap_width < 0)
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{
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if (priv->width_chars > 0)
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priv->wrap_width = get_label_char_width (label);
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else
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{
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PangoLayout *tmp;
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tmp = pango_layout_new (_context);
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pango_layout_set_font_description (tmp, priv->font_desc);
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pango_layout_set_text (tmp, "This is a very long string, which "
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"should be enough for a wrap width.",
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-1);
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pango_layout_get_size (tmp, &priv->wrap_width, NULL);
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g_object_unref (tmp);
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}
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}
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return priv->wrap_width;
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}
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static void
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clutter_label_ensure_layout (ClutterLabel *label)
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{
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ClutterLabelPrivate *priv;
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gint width;
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priv = label->priv;
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/* use the last size requested, if any */
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width = CLUTTER_UNITS_TO_INT (priv->allocation.x2 - priv->allocation.x1);
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if (!priv->layout)
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{
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priv->layout = pango_layout_new (_context);
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if (priv->effective_attrs)
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pango_layout_set_attributes (priv->layout, priv->effective_attrs);
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pango_layout_set_alignment (priv->layout, priv->alignment);
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pango_layout_set_ellipsize (priv->layout, priv->ellipsize);
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pango_layout_set_single_paragraph_mode (priv->layout,
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priv->single_line_mode);
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pango_layout_set_font_description (priv->layout, priv->font_desc);
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pango_layout_set_justify (priv->layout, priv->justify);
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if (priv->text)
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{
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if (!priv->use_markup)
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pango_layout_set_text (priv->layout, priv->text, -1);
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else
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pango_layout_set_markup (priv->layout, priv->text, -1);
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}
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if (priv->ellipsize)
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pango_layout_set_width (priv->layout, width > 0 ? width * PANGO_SCALE
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: -1);
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else if (priv->wrap)
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{
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pango_layout_set_wrap (priv->layout, priv->wrap_mode);
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if (width > 0)
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pango_layout_set_width (priv->layout, width * PANGO_SCALE);
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else
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{
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/* this was adapted from the GtkLabel code */
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ClutterActor *stage = clutter_stage_get_default ();
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gint stage_width = clutter_actor_get_width (stage);
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gint longest_paragraph, height, wrap_width;
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PangoRectangle logical_rect;
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pango_layout_set_width (priv->layout, -1);
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pango_layout_get_extents (priv->layout, NULL, &logical_rect);
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width = logical_rect.width;
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longest_paragraph = width;
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wrap_width = get_label_wrap_width (label);
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width = MAX (width, wrap_width);
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width = MIN (width, PANGO_SCALE * (stage_width + 1) / 2);
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pango_layout_set_width (priv->layout, width);
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pango_layout_get_extents (priv->layout, NULL, &logical_rect);
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width = logical_rect.width;
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height = logical_rect.height;
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if (longest_paragraph > 0)
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{
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gint n_lines, perfect_width;
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n_lines = pango_layout_get_line_count (priv->layout);
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perfect_width = (longest_paragraph + n_lines - 1) / n_lines;
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if (perfect_width < width)
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{
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pango_layout_set_width (priv->layout, perfect_width);
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pango_layout_get_extents (priv->layout, NULL,
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&logical_rect);
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if (logical_rect.height <= height)
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width = logical_rect.width = width;
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else
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{
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gint mid_width = (perfect_width + width) / 2;
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if (mid_width > perfect_width)
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{
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pango_layout_set_width (priv->layout, mid_width);
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pango_layout_get_extents (priv->layout, NULL,
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&logical_rect);
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if (logical_rect.height <= height);
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width = logical_rect.width;
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}
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}
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}
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}
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pango_layout_set_width (priv->layout, width);
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}
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}
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else
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pango_layout_set_width (priv->layout, -1);
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}
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CLUTTER_NOTE (ACTOR, "Label width set to %d pixels", width);
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}
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static void
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clutter_label_clear_layout (ClutterLabel *label)
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{
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if (label->priv->layout)
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{
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g_object_unref (label->priv->layout);
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label->priv->layout = NULL;
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}
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}
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static void
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clutter_label_paint (ClutterActor *self)
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{
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ClutterLabel *label = CLUTTER_LABEL (self);
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ClutterLabelPrivate *priv = label->priv;
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if (priv->font_desc == NULL || priv->text == NULL)
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{
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CLUTTER_NOTE (ACTOR, "layout: %p, desc: %p, text %p",
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priv->layout,
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priv->font_desc ? priv->font_desc : 0x0,
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priv->text ? priv->text : 0x0);
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return;
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}
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CLUTTER_NOTE (PAINT, "painting label (text:`%s')", priv->text);
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clutter_label_ensure_layout (label);
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priv->fgcol.alpha = clutter_actor_get_opacity (self);
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pango_clutter_render_layout (priv->layout, 0, 0, &priv->fgcol, 0);
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}
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static void
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clutter_label_query_coords (ClutterActor *self,
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ClutterActorBox *box)
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{
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ClutterLabel *label = CLUTTER_LABEL(self);
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ClutterLabelPrivate *priv;
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PangoRectangle logical_rect;
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priv = label->priv;
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if (priv->wrap)
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clutter_label_clear_layout (label);
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clutter_label_ensure_layout (label);
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pango_layout_get_extents (priv->layout, NULL, &logical_rect);
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box->x2 = box->x1 + CLUTTER_UNITS_FROM_PANGO_UNIT (logical_rect.width);
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box->y2 = box->y1 + CLUTTER_UNITS_FROM_PANGO_UNIT (logical_rect.height);
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return;
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}
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static void
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clutter_label_request_coords (ClutterActor *self,
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ClutterActorBox *box)
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{
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ClutterLabel *label = CLUTTER_LABEL (self);
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ClutterLabelPrivate *priv = label->priv;
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if (priv->ellipsize)
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{
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if (priv->layout)
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{
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gint width;
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PangoRectangle logical;
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width = CLUTTER_UNITS_TO_INT (box->x2 - box->x1) * PANGO_SCALE;
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pango_layout_set_width (priv->layout, -1);
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pango_layout_get_extents (priv->layout, NULL, &logical);
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if (logical.width > width)
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pango_layout_set_width (priv->layout, width);
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}
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}
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else
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clutter_label_clear_layout (label);
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priv->allocation = *box;
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}
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static void
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clutter_label_dispose (GObject *object)
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{
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ClutterLabel *self = CLUTTER_LABEL(object);
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ClutterLabelPrivate *priv;
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priv = self->priv;
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if (priv->layout)
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{
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g_object_unref (priv->layout);
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priv->layout = NULL;
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}
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if (priv->context)
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{
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g_object_unref (priv->context);
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priv->context = NULL;
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}
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G_OBJECT_CLASS (clutter_label_parent_class)->dispose (object);
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}
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static void
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clutter_label_finalize (GObject *object)
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{
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ClutterLabel *self = CLUTTER_LABEL(object);
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ClutterLabelPrivate *priv;
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priv = self->priv;
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if (priv->font_desc)
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pango_font_description_free (priv->font_desc);
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g_free (priv->text);
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g_free (priv->font_name);
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G_OBJECT_CLASS (clutter_label_parent_class)->finalize (object);
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}
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static ClutterLayoutFlags
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clutter_label_get_layout_flags (ClutterLayout *layout)
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{
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ClutterLayoutFlags flags;
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ClutterFixed angle;
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flags = CLUTTER_LAYOUT_NATURAL;
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angle = clutter_actor_get_rotationx (CLUTTER_ACTOR (layout),
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CLUTTER_Z_AXIS,
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NULL, NULL, NULL);
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if (angle == 0 || angle == CLUTTER_INT_TO_FIXED (180))
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flags |= CLUTTER_LAYOUT_HEIGHT_FOR_WIDTH;
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else if (angle == CLUTTER_INT_TO_FIXED (90) || angle == CLUTTER_INT_TO_FIXED (270))
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flags |= CLUTTER_LAYOUT_WIDTH_FOR_HEIGHT;
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return flags;
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}
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static void
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clutter_label_width_for_height (ClutterLayout *layout,
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ClutterUnit *width,
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ClutterUnit height)
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{
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ClutterLabel *label = CLUTTER_LABEL (layout);
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PangoLayout *tmp;
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gint layout_height;
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clutter_label_ensure_layout (label);
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tmp = pango_layout_copy (label->priv->layout);
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pango_layout_set_width (tmp, CLUTTER_UNITS_TO_PANGO_UNIT (height));
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pango_layout_get_pixel_size (tmp, NULL, &layout_height);
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if (width)
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*width = CLUTTER_UNITS_FROM_INT (layout_height);
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g_object_unref (tmp);
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}
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static void
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clutter_label_height_for_width (ClutterLayout *layout,
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ClutterUnit width,
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ClutterUnit *height)
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{
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ClutterLabel *label = CLUTTER_LABEL (layout);
|
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PangoLayout *tmp;
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gint layout_height;
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clutter_label_ensure_layout (label);
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tmp = pango_layout_copy (label->priv->layout);
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pango_layout_set_width (tmp, CLUTTER_UNITS_TO_PANGO_UNIT (width));
|
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pango_layout_get_pixel_size (tmp, NULL, &layout_height);
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|
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if (height)
|
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*height = CLUTTER_UNITS_FROM_INT (layout_height);
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g_object_unref (tmp);
|
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}
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|
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static void
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clutter_label_natural_request (ClutterLayout *layout,
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ClutterUnit *width,
|
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ClutterUnit *height)
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{
|
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ClutterLabel *label = CLUTTER_LABEL (layout);
|
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PangoLayout *tmp;
|
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PangoRectangle logical_rect = { 0, };
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clutter_label_ensure_layout (label);
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|
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tmp = pango_layout_copy (label->priv->layout);
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pango_layout_set_width (tmp, -1);
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pango_layout_set_ellipsize (tmp, PANGO_ELLIPSIZE_NONE);
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pango_layout_get_extents (tmp, NULL, &logical_rect);
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if (width)
|
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*width = CLUTTER_UNITS_FROM_PANGO_UNIT (logical_rect.width);
|
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if (height)
|
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*height = CLUTTER_UNITS_FROM_PANGO_UNIT (logical_rect.height);
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|
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g_object_unref (tmp);
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}
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|
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static void
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clutter_layout_iface_init (ClutterLayoutIface *iface)
|
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{
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iface->get_layout_flags = clutter_label_get_layout_flags;
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iface->height_for_width = clutter_label_height_for_width;
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iface->width_for_height = clutter_label_width_for_height;
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iface->natural_request = clutter_label_natural_request;
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}
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static void
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clutter_label_set_property (GObject *object,
|
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guint prop_id,
|
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const GValue *value,
|
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GParamSpec *pspec)
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{
|
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ClutterLabel *label;
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ClutterLabelPrivate *priv;
|
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|
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label = CLUTTER_LABEL(object);
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priv = label->priv;
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|
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switch (prop_id)
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{
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case PROP_FONT_NAME:
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clutter_label_set_font_name (label, g_value_get_string (value));
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break;
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case PROP_TEXT:
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clutter_label_set_text (label, g_value_get_string (value));
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break;
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case PROP_COLOR:
|
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clutter_label_set_color (label, g_value_get_boxed (value));
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break;
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case PROP_ATTRIBUTES:
|
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clutter_label_set_attributes (label, g_value_get_boxed (value));
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break;
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case PROP_ALIGNMENT:
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clutter_label_set_alignment (label, g_value_get_enum (value));
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break;
|
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case PROP_USE_MARKUP:
|
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clutter_label_set_use_markup (label, g_value_get_boolean (value));
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break;
|
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case PROP_WRAP:
|
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clutter_label_set_line_wrap (label, g_value_get_boolean (value));
|
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break;
|
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case PROP_JUSTIFY:
|
|
clutter_label_set_justify (label, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_WRAP_MODE:
|
|
clutter_label_set_line_wrap_mode (label, g_value_get_enum (value));
|
|
break;
|
|
case PROP_ELLIPSIZE:
|
|
clutter_label_set_ellipsize (label, g_value_get_enum (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_label_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
ClutterLabel *label;
|
|
ClutterLabelPrivate *priv;
|
|
ClutterColor color;
|
|
|
|
label = CLUTTER_LABEL (object);
|
|
priv = label->priv;
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_FONT_NAME:
|
|
g_value_set_string (value, priv->font_name);
|
|
break;
|
|
case PROP_TEXT:
|
|
g_value_set_string (value, priv->text);
|
|
break;
|
|
case PROP_COLOR:
|
|
clutter_label_get_color (label, &color);
|
|
g_value_set_boxed (value, &color);
|
|
break;
|
|
case PROP_ATTRIBUTES:
|
|
g_value_set_boxed (value, priv->attrs);
|
|
break;
|
|
case PROP_ALIGNMENT:
|
|
g_value_set_enum (value, priv->alignment);
|
|
break;
|
|
case PROP_USE_MARKUP:
|
|
g_value_set_boolean (value, priv->use_markup);
|
|
break;
|
|
case PROP_JUSTIFY:
|
|
g_value_set_boolean (value, priv->justify);
|
|
break;
|
|
case PROP_WRAP:
|
|
g_value_set_boolean (value, priv->wrap);
|
|
break;
|
|
case PROP_WRAP_MODE:
|
|
g_value_set_enum (value, priv->wrap_mode);
|
|
break;
|
|
case PROP_ELLIPSIZE:
|
|
g_value_set_enum (value, priv->ellipsize);
|
|
break;
|
|
case PROP_LAYOUT_FLAGS:
|
|
g_value_set_flags (value,
|
|
clutter_label_get_layout_flags (CLUTTER_LAYOUT (label)));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_label_class_init (ClutterLabelClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
|
|
|
|
actor_class->paint = clutter_label_paint;
|
|
actor_class->request_coords = clutter_label_request_coords;
|
|
actor_class->query_coords = clutter_label_query_coords;
|
|
|
|
gobject_class->finalize = clutter_label_finalize;
|
|
gobject_class->dispose = clutter_label_dispose;
|
|
gobject_class->set_property = clutter_label_set_property;
|
|
gobject_class->get_property = clutter_label_get_property;
|
|
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_FONT_NAME,
|
|
g_param_spec_string ("font-name",
|
|
"Font Name",
|
|
"Pango font description",
|
|
NULL,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_TEXT,
|
|
g_param_spec_string ("text",
|
|
"Text",
|
|
"Text to render",
|
|
NULL,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_COLOR,
|
|
g_param_spec_boxed ("color",
|
|
"Font Colour",
|
|
"Font Colour",
|
|
CLUTTER_TYPE_COLOR,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_ATTRIBUTES,
|
|
g_param_spec_boxed ("attributes",
|
|
"Attributes",
|
|
"A list of style attributes to apply to the"
|
|
"text of the label",
|
|
PANGO_TYPE_ATTR_LIST,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_USE_MARKUP,
|
|
g_param_spec_boolean ("use-markup",
|
|
"Use markup",
|
|
"The text of the label includes XML markup."
|
|
"See pango_parse_markup()",
|
|
FALSE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_WRAP,
|
|
g_param_spec_boolean ("wrap",
|
|
"Line wrap",
|
|
"If set, wrap lines if the text becomes too wide",
|
|
FALSE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_WRAP_MODE,
|
|
g_param_spec_enum ("wrap-mode",
|
|
"Line wrap mode",
|
|
"If wrap is set, controls how linewrapping is done",
|
|
PANGO_TYPE_WRAP_MODE,
|
|
PANGO_WRAP_WORD,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_ELLIPSIZE,
|
|
g_param_spec_enum ( "ellipsize",
|
|
"Ellipsize",
|
|
"The preferred place to ellipsize the string,"
|
|
"if the label does not have enough room to "
|
|
"display the entire string",
|
|
PANGO_TYPE_ELLIPSIZE_MODE,
|
|
PANGO_ELLIPSIZE_NONE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_ALIGNMENT,
|
|
g_param_spec_enum ( "alignment",
|
|
"Alignment",
|
|
"The preferred alignment for the string",
|
|
PANGO_TYPE_ALIGNMENT,
|
|
PANGO_ALIGN_LEFT,
|
|
CLUTTER_PARAM_READWRITE));
|
|
/**
|
|
* ClutterLabel:justify:
|
|
*
|
|
* Whether the contents of the label should be justified on both
|
|
* margins.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_JUSTIFY,
|
|
g_param_spec_boolean ("justify",
|
|
"Justify",
|
|
"Whether the contents of the label should be justified",
|
|
FALSE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
|
|
g_object_class_override_property (gobject_class,
|
|
PROP_LAYOUT_FLAGS,
|
|
"layout-flags");
|
|
|
|
g_type_class_add_private (gobject_class, sizeof (ClutterLabelPrivate));
|
|
}
|
|
|
|
static void
|
|
clutter_label_init (ClutterLabel *self)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
self->priv = priv = CLUTTER_LABEL_GET_PRIVATE (self);
|
|
|
|
if (G_UNLIKELY (_context == NULL))
|
|
{
|
|
ClutterBackend *backend;
|
|
gdouble resolution;
|
|
|
|
backend = clutter_get_default_backend ();
|
|
resolution = clutter_backend_get_resolution (backend);
|
|
if (resolution < 0)
|
|
resolution = 96.0;
|
|
|
|
_font_map = PANGO_CLUTTER_FONT_MAP (pango_clutter_font_map_new ());
|
|
pango_clutter_font_map_set_resolution (_font_map, resolution);
|
|
_context = pango_clutter_font_map_create_context (_font_map);
|
|
}
|
|
|
|
priv->alignment = PANGO_ALIGN_LEFT;
|
|
priv->wrap = FALSE;
|
|
priv->wrap_mode = PANGO_WRAP_WORD;
|
|
priv->ellipsize = PANGO_ELLIPSIZE_NONE;
|
|
priv->use_underline = FALSE;
|
|
priv->use_markup = FALSE;
|
|
priv->justify = FALSE;
|
|
|
|
priv->layout = NULL;
|
|
priv->text = NULL;
|
|
priv->attrs = NULL;
|
|
|
|
priv->width_chars = -1;
|
|
priv->wrap_width = -1;
|
|
|
|
priv->fgcol.red = 0;
|
|
priv->fgcol.green = 0;
|
|
priv->fgcol.blue = 0;
|
|
priv->fgcol.alpha = 255;
|
|
|
|
priv->font_name = g_strdup (DEFAULT_FONT_NAME);
|
|
priv->font_desc = pango_font_description_from_string (priv->font_name);
|
|
|
|
CLUTTER_MARK();
|
|
}
|
|
|
|
/**
|
|
* clutter_label_new_with_text:
|
|
* @font_name: the name (and size) of the font to be used
|
|
* @text: the text to be displayed
|
|
*
|
|
* Creates a new #ClutterLabel displaying @text using @font_name.
|
|
*
|
|
* Return value: a #ClutterLabel
|
|
*/
|
|
ClutterActor*
|
|
clutter_label_new_with_text (const gchar *font_name,
|
|
const gchar *text)
|
|
{
|
|
return g_object_new (CLUTTER_TYPE_LABEL,
|
|
"font-name", font_name,
|
|
"text", text,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_label_new_full:
|
|
* @font_name: the name (and size) of the font to be used
|
|
* @text: the text to be displayed
|
|
* @color: #ClutterColor for text
|
|
*
|
|
* Creates a new #ClutterLabel displaying @text with color @color
|
|
* using @font_name.
|
|
*
|
|
* Return value: a #ClutterLabel
|
|
*/
|
|
ClutterActor*
|
|
clutter_label_new_full (const gchar *font_name,
|
|
const gchar *text,
|
|
const ClutterColor *color)
|
|
{
|
|
return g_object_new (CLUTTER_TYPE_LABEL,
|
|
"font-name", font_name,
|
|
"text", text,
|
|
"color", color,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_label_new:
|
|
*
|
|
* Creates a new, empty #ClutterLabel.
|
|
*
|
|
* Returns: the newly created #ClutterLabel
|
|
*/
|
|
ClutterActor *
|
|
clutter_label_new (void)
|
|
{
|
|
return g_object_new (CLUTTER_TYPE_LABEL, NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_text:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Retrieves the text displayed by @label
|
|
*
|
|
* Return value: the text of the label. The returned string is
|
|
* owned by #ClutterLabel and should not be modified or freed.
|
|
*/
|
|
G_CONST_RETURN gchar *
|
|
clutter_label_get_text (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), NULL);
|
|
|
|
return label->priv->text;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_text:
|
|
* @label: a #ClutterLabel
|
|
* @text: the text to be displayed
|
|
*
|
|
* Sets @text as the text to be displayed by @label.
|
|
*/
|
|
void
|
|
clutter_label_set_text (ClutterLabel *label,
|
|
const gchar *text)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
priv = label->priv;
|
|
|
|
g_object_ref (label);
|
|
|
|
g_free (priv->text);
|
|
priv->text = g_strdup (text);
|
|
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR(label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR(label));
|
|
|
|
g_object_notify (G_OBJECT (label), "text");
|
|
g_object_unref (label);
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_font_name:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Retrieves the font used by @label.
|
|
*
|
|
* Return value: a string containing the font name, in a format
|
|
* understandable by pango_font_description_from_string(). The
|
|
* string is owned by #ClutterLabel and should not be modified
|
|
* or freed.
|
|
*/
|
|
G_CONST_RETURN gchar *
|
|
clutter_label_get_font_name (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), NULL);
|
|
|
|
return label->priv->font_name;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_font_name:
|
|
* @label: a #ClutterLabel
|
|
* @font_name: a font name and size, or %NULL for the default font
|
|
*
|
|
* Sets @font_name as the font used by @label.
|
|
*
|
|
* @font_name must be a string containing the font name and its
|
|
* size, similarly to what you would feed to the
|
|
* pango_font_description_from_string() function.
|
|
*/
|
|
void
|
|
clutter_label_set_font_name (ClutterLabel *label,
|
|
const gchar *font_name)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
PangoFontDescription *desc;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
if (!font_name || font_name[0] == '\0')
|
|
font_name = DEFAULT_FONT_NAME;
|
|
|
|
priv = label->priv;
|
|
|
|
if (strcmp (priv->font_name, font_name) == 0)
|
|
return;
|
|
|
|
desc = pango_font_description_from_string (font_name);
|
|
if (!desc)
|
|
{
|
|
g_warning ("Attempting to create a PangoFontDescription for "
|
|
"font name `%s', but failed.",
|
|
font_name);
|
|
return;
|
|
}
|
|
|
|
g_object_ref (label);
|
|
|
|
g_free (priv->font_name);
|
|
priv->font_name = g_strdup (font_name);
|
|
|
|
if (priv->font_desc)
|
|
pango_font_description_free (priv->font_desc);
|
|
|
|
priv->font_desc = desc;
|
|
priv->wrap_width = -1;
|
|
|
|
if (label->priv->text && label->priv->text[0] != '\0')
|
|
{
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (label))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (label));
|
|
}
|
|
|
|
g_object_notify (G_OBJECT (label), "font-name");
|
|
g_object_unref (label);
|
|
}
|
|
|
|
|
|
/**
|
|
* clutter_label_set_color:
|
|
* @label: a #ClutterLabel
|
|
* @color: a #ClutterColor
|
|
*
|
|
* Sets the color of @label.
|
|
*/
|
|
void
|
|
clutter_label_set_color (ClutterLabel *label,
|
|
const ClutterColor *color)
|
|
{
|
|
ClutterActor *actor;
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
priv = label->priv;
|
|
|
|
g_object_ref (label);
|
|
|
|
priv->fgcol.red = color->red;
|
|
priv->fgcol.green = color->green;
|
|
priv->fgcol.blue = color->blue;
|
|
priv->fgcol.alpha = color->alpha;
|
|
|
|
actor = CLUTTER_ACTOR (label);
|
|
|
|
clutter_actor_set_opacity (actor, priv->fgcol.alpha);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (actor))
|
|
clutter_actor_queue_redraw (actor);
|
|
|
|
g_object_notify (G_OBJECT (label), "color");
|
|
g_object_unref (label);
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_color:
|
|
* @label: a #ClutterLabel
|
|
* @color: return location for a #ClutterColor
|
|
*
|
|
* Retrieves the color of @label.
|
|
*/
|
|
void
|
|
clutter_label_get_color (ClutterLabel *label,
|
|
ClutterColor *color)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
priv = label->priv;
|
|
|
|
color->red = priv->fgcol.red;
|
|
color->green = priv->fgcol.green;
|
|
color->blue = priv->fgcol.blue;
|
|
color->alpha = priv->fgcol.alpha;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_ellipsize:
|
|
* @label: a #ClutterLabel
|
|
* @mode: a #PangoEllipsizeMode
|
|
*
|
|
* Sets the mode used to ellipsize (add an ellipsis: "...") to the text
|
|
* if there is not enough space to render the entire string.
|
|
*
|
|
* Since: 0.2
|
|
**/
|
|
void
|
|
clutter_label_set_ellipsize (ClutterLabel *label,
|
|
PangoEllipsizeMode mode)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE &&
|
|
mode <= PANGO_ELLIPSIZE_END);
|
|
|
|
priv = label->priv;
|
|
|
|
if ((PangoEllipsizeMode) priv->ellipsize != mode)
|
|
{
|
|
g_object_ref (label);
|
|
|
|
priv->ellipsize = mode;
|
|
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR(label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR(label));
|
|
|
|
g_object_notify (G_OBJECT (label), "ellipsize");
|
|
g_object_unref (label);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_ellipsize:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Returns the ellipsizing position of the label.
|
|
* See clutter_label_set_ellipsize().
|
|
*
|
|
* Return value: #PangoEllipsizeMode
|
|
*
|
|
* Since: 0.2
|
|
**/
|
|
PangoEllipsizeMode
|
|
clutter_label_get_ellipsize (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), PANGO_ELLIPSIZE_NONE);
|
|
|
|
return label->priv->ellipsize;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_line_wrap:
|
|
* @label: a #ClutterLabel
|
|
* @wrap: the setting
|
|
*
|
|
* Toggles line wrapping within the #ClutterLabel widget. %TRUE makes
|
|
* it break lines if text exceeds the widget's size. %FALSE lets the
|
|
* text get cut off by the edge of the widget if it exceeds the widget
|
|
* size.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
void
|
|
clutter_label_set_line_wrap (ClutterLabel *label,
|
|
gboolean wrap)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
priv = label->priv;
|
|
|
|
wrap = wrap != FALSE;
|
|
|
|
if (priv->wrap != wrap)
|
|
{
|
|
g_object_ref (label);
|
|
|
|
priv->wrap = wrap;
|
|
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "wrap");
|
|
g_object_unref (label);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_line_wrap:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Returns whether lines in the label are automatically wrapped.
|
|
* See clutter_label_set_line_wrap ().
|
|
*
|
|
* Return value: %TRUE if the lines of the label are automatically wrapped.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
gboolean
|
|
clutter_label_get_line_wrap (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), FALSE);
|
|
|
|
return label->priv->wrap;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_line_wrap_mode:
|
|
* @label: a #ClutterLabel
|
|
* @wrap_mode: the line wrapping mode
|
|
*
|
|
* If line wrapping is on (see clutter_label_set_line_wrap()) this controls how
|
|
* the line wrapping is done. The default is %PANGO_WRAP_WORD which means
|
|
* wrap on word boundaries.
|
|
*
|
|
* Since: 0.2
|
|
**/
|
|
void
|
|
clutter_label_set_line_wrap_mode (ClutterLabel *label,
|
|
PangoWrapMode wrap_mode)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
priv = label->priv;
|
|
|
|
if (priv->wrap_mode != wrap_mode)
|
|
{
|
|
g_object_ref (label);
|
|
|
|
priv->wrap_mode = wrap_mode;
|
|
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "wrap-mode");
|
|
g_object_unref (label);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_line_wrap_mode:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Returns line wrap mode used by the label.
|
|
* See clutter_label_set_line_wrap_mode ().
|
|
*
|
|
* Return value: %TRUE if the lines of the label are automatically wrapped.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
PangoWrapMode
|
|
clutter_label_get_line_wrap_mode (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), FALSE);
|
|
|
|
return label->priv->wrap_mode;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_layout:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Gets the #PangoLayout used to display the label.
|
|
* The layout is useful to e.g. convert text positions to
|
|
* pixel positions.
|
|
* The returned layout is owned by the label so need not be
|
|
* freed by the caller.
|
|
*
|
|
* Return value: the #PangoLayout for this label
|
|
*
|
|
* Since: 0.2
|
|
**/
|
|
PangoLayout*
|
|
clutter_label_get_layout (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), NULL);
|
|
|
|
clutter_label_ensure_layout (label);
|
|
|
|
return label->priv->layout;
|
|
}
|
|
|
|
static inline void
|
|
clutter_label_set_attributes_internal (ClutterLabel *label,
|
|
PangoAttrList *attrs)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
priv = label->priv;
|
|
|
|
g_object_ref (label);
|
|
|
|
if (attrs)
|
|
pango_attr_list_ref (attrs);
|
|
|
|
if (priv->attrs)
|
|
pango_attr_list_unref (priv->attrs);
|
|
|
|
if (!priv->use_markup)
|
|
{
|
|
if (attrs)
|
|
pango_attr_list_ref (attrs);
|
|
if (priv->effective_attrs)
|
|
pango_attr_list_unref (priv->effective_attrs);
|
|
priv->effective_attrs = attrs;
|
|
}
|
|
|
|
label->priv->attrs = attrs;
|
|
g_object_notify (G_OBJECT (label), "attributes");
|
|
g_object_unref (label);
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_attributes:
|
|
* @label: a #ClutterLabel
|
|
* @attrs: a #PangoAttrList
|
|
*
|
|
* Sets a #PangoAttrList; the attributes in the list are applied to the
|
|
* label text. The attributes set with this function will be ignored
|
|
* if the "use_markup" property
|
|
* is %TRUE.
|
|
*
|
|
* Since: 0.2
|
|
**/
|
|
void
|
|
clutter_label_set_attributes (ClutterLabel *label,
|
|
PangoAttrList *attrs)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
clutter_label_set_attributes_internal (label, attrs);
|
|
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR(label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR(label));
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_attributes:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Gets the attribute list that was set on the label using
|
|
* clutter_label_set_attributes(), if any.
|
|
*
|
|
* Return value: the attribute list, or %NULL if none was set.
|
|
*
|
|
* Since: 0.2
|
|
**/
|
|
PangoAttrList *
|
|
clutter_label_get_attributes (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), NULL);
|
|
|
|
return label->priv->attrs;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_use_markup:
|
|
* @label: a #ClutterLabel
|
|
* @setting: %TRUE if the label's text should be parsed for markup.
|
|
*
|
|
* Sets whether the text of the label contains markup in <link
|
|
* linkend="PangoMarkupFormat">Pango's text markup
|
|
* language</link>.
|
|
**/
|
|
void
|
|
clutter_label_set_use_markup (ClutterLabel *label,
|
|
gboolean setting)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
priv = label->priv;
|
|
|
|
if (priv->use_markup != setting)
|
|
{
|
|
g_object_ref (label);
|
|
|
|
priv->use_markup = setting;
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "use-markup");
|
|
g_object_unref (label);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_use_markup:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Returns whether the label's text is interpreted as marked up with
|
|
* the <link linkend="PangoMarkupFormat">Pango text markup
|
|
* language</link>. See clutter_label_set_use_markup ().
|
|
*
|
|
* Return value: %TRUE if the label's text will be parsed for markup.
|
|
**/
|
|
gboolean
|
|
clutter_label_get_use_markup (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), FALSE);
|
|
|
|
return label->priv->use_markup;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_alignment:
|
|
* @label: a #ClutterLabel
|
|
* @alignment: A #PangoAlignment
|
|
*
|
|
* Sets text alignment of the label.
|
|
**/
|
|
void
|
|
clutter_label_set_alignment (ClutterLabel *label,
|
|
PangoAlignment alignment)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
priv = label->priv;
|
|
|
|
if (priv->alignment != alignment)
|
|
{
|
|
g_object_ref (label);
|
|
|
|
priv->alignment = alignment;
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (label)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "alignment");
|
|
g_object_unref (label);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_alignment:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Returns the label's text alignment
|
|
*
|
|
* Return value: The labels #PangoAlignment
|
|
*
|
|
* Since 0.2
|
|
**/
|
|
PangoAlignment
|
|
clutter_label_get_alignment (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), FALSE);
|
|
|
|
return label->priv->alignment;
|
|
}
|
|
|
|
/**
|
|
* clutter_label_set_justify:
|
|
* @label: a #ClutterLabel
|
|
* @justify: whether the text should be justified
|
|
*
|
|
* Sets whether the text of the @label actor should be justified
|
|
* on both margins. This setting is ignored if Clutter is compiled
|
|
* against Pango > 1.18.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_label_set_justify (ClutterLabel *label,
|
|
gboolean justify)
|
|
{
|
|
ClutterLabelPrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_LABEL (label));
|
|
|
|
priv = label->priv;
|
|
|
|
if (priv->justify != justify)
|
|
{
|
|
priv->justify = justify;
|
|
|
|
clutter_label_clear_layout (label);
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (label))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "justify");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_label_get_justify:
|
|
* @label: a #ClutterLabel
|
|
*
|
|
* Retrieves whether the label should justify the text on both margins.
|
|
*
|
|
* Return value: %TRUE if the text should be justified
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
gboolean
|
|
clutter_label_get_justify (ClutterLabel *label)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_LABEL (label), FALSE);
|
|
|
|
return label->priv->justify;
|
|
}
|