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gtk2/gtk/gtkcellrenderertext.c
Soren Sandmann 77eee887f3 Minor documentation fixes 
2002-08-10  Soren Sandmann  <sandmann@daimi.au.dk>

	* docs/reference/gtk/tree_widget.sgml,
	docs/reference/gtk/tmpl/gtkdialog.sgml,
	docs/reference/gtk/tmpl/gtkentry.sgml,
	docs/reference/gtk/tmpl/gtkfilesel.sgml,
	docs/reference/gtk/tmpl/gtkfontsel.sgml,
	docs/reference/gtk/tmpl/gtkfontseldlg.sgml,
	docs/reference/gtk/tmpl/gtktreemodel.sgml,
	docs/reference/gtk/tmpl/gtkwidget.sgml, gdk/x11/gdkdisplay-x11.c,
	gtk/gtkbbox.c, gtk/gtkbox.c, gtk/gtkbutton.c, gtk/gtkcellrenderer.c,
	gtk/gtkcellrendererpixbuf.c, gtk/gtkcellrenderertext.c,
	gtk/gtkcheckmenuitem.c, gtk/gtkcontainer.c, gtk/gtkcurve.c,
	gtk/gtkdialog.h, gtk/gtkentry.c, gtk/gtkfilesel.c, gtk/gtkfontsel.c,
	gtk/gtkframe.c, gtk/gtkhandlebox.c, gtk/gtkiconfactory.c,
	gtk/gtkimage.c, gtk/gtkinvisible.c, gtk/gtkitemfactory.c,
	gtk/gtklabel.c, gtk/gtklayout.c, gtk/gtkmenu.c, gtk/gtkprogress.c,
	gtk/gtkprogressbar.c, gtk/gtkscrolledwindow.c, gtk/gtksizegroup.c,
	gtk/gtktable.c, gtk/gtktextiter.c, gtk/gtktexttag.c,
	gtk/gtktexttag.h, gtk/gtktextview.c, gtk/gtktogglebutton.c,
	gtk/gtktoolbar.c, gtk/gtktreemodel.c, gtk/gtktreeselection.c,
	gtk/gtktreestore.c, gtk/gtktreeview.c, gtk/gtktreeviewcolumn.c,
	gtk/gtkviewport.c, gtk/gtkwidget.c, gtk/gtkwidget.h,
	gtk/gtkwindow.c:

	Minor documentation fixes

	(#89254, patch from Brett Nash;
	 #85809, patch from daten@dnetc.org;
	 #76391, patch from Ross Burton;
	 #74559, Manuel Clos;
	 #73569, #72005, Alexey A. Malyshev;
	 #70061, patch from Dennis Bj"orklund;
	 #64566, #63388, #58328, #57499, #81007, #77349, Vitaly Tishkov;
	 #78932, Vitaly Tishkov, patch from Ross Burton;
	 #73306)
2002-08-10 09:55:41 +00:00

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/* gtkcellrenderertext.c
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This library 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 library 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 library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include "gtkcellrenderertext.h"
#include "gtkeditable.h"
#include "gtkentry.h"
#include "gtkmarshalers.h"
#include "gtksignal.h"
#include "gtkintl.h"
static void gtk_cell_renderer_text_init (GtkCellRendererText *celltext);
static void gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class);
static void gtk_cell_renderer_text_finalize (GObject *object);
static void gtk_cell_renderer_text_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_text_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_text_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height);
static void gtk_cell_renderer_text_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags);
static GtkCellEditable *gtk_cell_renderer_text_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags);
enum {
EDITED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_TEXT,
PROP_MARKUP,
PROP_ATTRIBUTES,
/* Style args */
PROP_BACKGROUND,
PROP_FOREGROUND,
PROP_BACKGROUND_GDK,
PROP_FOREGROUND_GDK,
PROP_FONT,
PROP_FONT_DESC,
PROP_FAMILY,
PROP_STYLE,
PROP_VARIANT,
PROP_WEIGHT,
PROP_STRETCH,
PROP_SIZE,
PROP_SIZE_POINTS,
PROP_SCALE,
PROP_EDITABLE,
PROP_STRIKETHROUGH,
PROP_UNDERLINE,
PROP_RISE,
/* Whether-a-style-arg-is-set args */
PROP_BACKGROUND_SET,
PROP_FOREGROUND_SET,
PROP_FAMILY_SET,
PROP_STYLE_SET,
PROP_VARIANT_SET,
PROP_WEIGHT_SET,
PROP_STRETCH_SET,
PROP_SIZE_SET,
PROP_SCALE_SET,
PROP_EDITABLE_SET,
PROP_STRIKETHROUGH_SET,
PROP_UNDERLINE_SET,
PROP_RISE_SET
};
static gpointer parent_class;
static guint text_cell_renderer_signals [LAST_SIGNAL];
#define GTK_CELL_RENDERER_TEXT_PATH "gtk-cell-renderer-text-path"
GtkType
gtk_cell_renderer_text_get_type (void)
{
static GtkType cell_text_type = 0;
if (!cell_text_type)
{
static const GTypeInfo cell_text_info =
{
sizeof (GtkCellRendererTextClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_cell_renderer_text_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkCellRendererText),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_cell_renderer_text_init,
};
cell_text_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererText", &cell_text_info, 0);
}
return cell_text_type;
}
static void
gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
{
GTK_CELL_RENDERER (celltext)->xalign = 0.0;
GTK_CELL_RENDERER (celltext)->yalign = 0.5;
GTK_CELL_RENDERER (celltext)->xpad = 2;
GTK_CELL_RENDERER (celltext)->ypad = 2;
celltext->fixed_height_rows = -1;
celltext->font = pango_font_description_new ();
}
static void
gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
parent_class = g_type_class_peek_parent (class);
object_class->finalize = gtk_cell_renderer_text_finalize;
object_class->get_property = gtk_cell_renderer_text_get_property;
object_class->set_property = gtk_cell_renderer_text_set_property;
cell_class->get_size = gtk_cell_renderer_text_get_size;
cell_class->render = gtk_cell_renderer_text_render;
cell_class->start_editing = gtk_cell_renderer_text_start_editing;
g_object_class_install_property (object_class,
PROP_TEXT,
g_param_spec_string ("text",
_("Text"),
_("Text to render"),
NULL,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_MARKUP,
g_param_spec_string ("markup",
_("Markup"),
_("Marked up text to render"),
NULL,
G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_ATTRIBUTES,
g_param_spec_boxed ("attributes",
_("Attributes"),
_("A list of style attributes to apply to the text of the renderer"),
PANGO_TYPE_ATTR_LIST,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_BACKGROUND,
g_param_spec_string ("background",
_("Background color name"),
_("Background color as a string"),
NULL,
G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_BACKGROUND_GDK,
g_param_spec_boxed ("background_gdk",
_("Background color"),
_("Background color as a GdkColor"),
GDK_TYPE_COLOR,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_FOREGROUND,
g_param_spec_string ("foreground",
_("Foreground color name"),
_("Foreground color as a string"),
NULL,
G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_FOREGROUND_GDK,
g_param_spec_boxed ("foreground_gdk",
_("Foreground color"),
_("Foreground color as a GdkColor"),
GDK_TYPE_COLOR,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_EDITABLE,
g_param_spec_boolean ("editable",
_("Editable"),
_("Whether the text can be modified by the user"),
FALSE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_FONT,
g_param_spec_string ("font",
_("Font"),
_("Font description as a string"),
NULL,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_FONT_DESC,
g_param_spec_boxed ("font_desc",
_("Font"),
_("Font description as a PangoFontDescription struct"),
PANGO_TYPE_FONT_DESCRIPTION,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_FAMILY,
g_param_spec_string ("family",
_("Font family"),
_("Name of the font family, e.g. Sans, Helvetica, Times, Monospace"),
NULL,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_STYLE,
g_param_spec_enum ("style",
_("Font style"),
_("Font style"),
PANGO_TYPE_STYLE,
PANGO_STYLE_NORMAL,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_VARIANT,
g_param_spec_enum ("variant",
_("Font variant"),
_("Font variant"),
PANGO_TYPE_VARIANT,
PANGO_VARIANT_NORMAL,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_WEIGHT,
g_param_spec_int ("weight",
_("Font weight"),
_("Font weight"),
0,
G_MAXINT,
PANGO_WEIGHT_NORMAL,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_STRETCH,
g_param_spec_enum ("stretch",
_("Font stretch"),
_("Font stretch"),
PANGO_TYPE_STRETCH,
PANGO_STRETCH_NORMAL,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_SIZE,
g_param_spec_int ("size",
_("Font size"),
_("Font size"),
0,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_SIZE_POINTS,
g_param_spec_double ("size_points",
_("Font points"),
_("Font size in points"),
0.0,
G_MAXDOUBLE,
0.0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_SCALE,
g_param_spec_double ("scale",
_("Font scale"),
_("Font scaling factor"),
0.0,
G_MAXDOUBLE,
1.0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_RISE,
g_param_spec_int ("rise",
_("Rise"),
_("Offset of text above the baseline (below the baseline if rise is negative)"),
-G_MAXINT,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_STRIKETHROUGH,
g_param_spec_boolean ("strikethrough",
_("Strikethrough"),
_("Whether to strike through the text"),
FALSE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_UNDERLINE,
g_param_spec_enum ("underline",
_("Underline"),
_("Style of underline for this text"),
PANGO_TYPE_UNDERLINE,
PANGO_UNDERLINE_NONE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
/* Style props are set or not */
#define ADD_SET_PROP(propname, propval, nick, blurb) g_object_class_install_property (object_class, propval, g_param_spec_boolean (propname, nick, blurb, FALSE, G_PARAM_READABLE | G_PARAM_WRITABLE))
ADD_SET_PROP ("background_set", PROP_BACKGROUND_SET,
_("Background set"),
_("Whether this tag affects the background color"));
ADD_SET_PROP ("foreground_set", PROP_FOREGROUND_SET,
_("Foreground set"),
_("Whether this tag affects the foreground color"));
ADD_SET_PROP ("editable_set", PROP_EDITABLE_SET,
_("Editability set"),
_("Whether this tag affects text editability"));
ADD_SET_PROP ("family_set", PROP_FAMILY_SET,
_("Font family set"),
_("Whether this tag affects the font family"));
ADD_SET_PROP ("style_set", PROP_STYLE_SET,
_("Font style set"),
_("Whether this tag affects the font style"));
ADD_SET_PROP ("variant_set", PROP_VARIANT_SET,
_("Font variant set"),
_("Whether this tag affects the font variant"));
ADD_SET_PROP ("weight_set", PROP_WEIGHT_SET,
_("Font weight set"),
_("Whether this tag affects the font weight"));
ADD_SET_PROP ("stretch_set", PROP_STRETCH_SET,
_("Font stretch set"),
_("Whether this tag affects the font stretch"));
ADD_SET_PROP ("size_set", PROP_SIZE_SET,
_("Font size set"),
_("Whether this tag affects the font size"));
ADD_SET_PROP ("scale_set", PROP_SCALE_SET,
_("Font scale set"),
_("Whether this tag scales the font size by a factor"));
ADD_SET_PROP ("rise_set", PROP_RISE_SET,
_("Rise set"),
_("Whether this tag affects the rise"));
ADD_SET_PROP ("strikethrough_set", PROP_STRIKETHROUGH_SET,
_("Strikethrough set"),
_("Whether this tag affects strikethrough"));
ADD_SET_PROP ("underline_set", PROP_UNDERLINE_SET,
_("Underline set"),
_("Whether this tag affects underlining"));
text_cell_renderer_signals [EDITED] =
gtk_signal_new ("edited",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkCellRendererTextClass, edited),
_gtk_marshal_VOID__STRING_STRING,
GTK_TYPE_NONE, 2,
G_TYPE_STRING,
G_TYPE_STRING);
}
static void
gtk_cell_renderer_text_finalize (GObject *object)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
pango_font_description_free (celltext->font);
if (celltext->text)
g_free (celltext->text);
if (celltext->extra_attrs)
pango_attr_list_unref (celltext->extra_attrs);
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
static PangoFontMask
get_property_font_set_mask (guint prop_id)
{
switch (prop_id)
{
case PROP_FAMILY_SET:
return PANGO_FONT_MASK_FAMILY;
case PROP_STYLE_SET:
return PANGO_FONT_MASK_STYLE;
case PROP_VARIANT_SET:
return PANGO_FONT_MASK_VARIANT;
case PROP_WEIGHT_SET:
return PANGO_FONT_MASK_WEIGHT;
case PROP_STRETCH_SET:
return PANGO_FONT_MASK_STRETCH;
case PROP_SIZE_SET:
return PANGO_FONT_MASK_SIZE;
}
return 0;
}
static void
gtk_cell_renderer_text_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
switch (param_id)
{
case PROP_TEXT:
g_value_set_string (value, celltext->text);
break;
case PROP_ATTRIBUTES:
g_value_set_boxed (value, celltext->extra_attrs);
break;
case PROP_BACKGROUND_GDK:
{
GdkColor color;
color.red = celltext->background.red;
color.green = celltext->background.green;
color.blue = celltext->background.blue;
g_value_set_boxed (value, &color);
}
break;
case PROP_FOREGROUND_GDK:
{
GdkColor color;
color.red = celltext->foreground.red;
color.green = celltext->foreground.green;
color.blue = celltext->foreground.blue;
g_value_set_boxed (value, &color);
}
break;
case PROP_FONT:
{
/* FIXME GValue imposes a totally gratuitous string copy
* here, we could just hand off string ownership
*/
gchar *str = pango_font_description_to_string (celltext->font);
g_value_set_string (value, str);
g_free (str);
}
break;
case PROP_FONT_DESC:
g_value_set_boxed (value, celltext->font);
break;
case PROP_FAMILY:
g_value_set_string (value, pango_font_description_get_family (celltext->font));
break;
case PROP_STYLE:
g_value_set_enum (value, pango_font_description_get_style (celltext->font));
break;
case PROP_VARIANT:
g_value_set_enum (value, pango_font_description_get_variant (celltext->font));
break;
case PROP_WEIGHT:
g_value_set_int (value, pango_font_description_get_weight (celltext->font));
break;
case PROP_STRETCH:
g_value_set_enum (value, pango_font_description_get_stretch (celltext->font));
break;
case PROP_SIZE:
g_value_set_int (value, pango_font_description_get_size (celltext->font));
break;
case PROP_SIZE_POINTS:
g_value_set_double (value, ((double)pango_font_description_get_size (celltext->font)) / (double)PANGO_SCALE);
break;
case PROP_SCALE:
g_value_set_double (value, celltext->font_scale);
break;
case PROP_EDITABLE:
g_value_set_boolean (value, celltext->editable);
break;
case PROP_STRIKETHROUGH:
g_value_set_boolean (value, celltext->strikethrough);
break;
case PROP_UNDERLINE:
g_value_set_enum (value, celltext->underline_style);
break;
case PROP_RISE:
g_value_set_int (value, celltext->rise);
break;
case PROP_BACKGROUND_SET:
g_value_set_boolean (value, celltext->background_set);
break;
case PROP_FOREGROUND_SET:
g_value_set_boolean (value, celltext->foreground_set);
break;
case PROP_FAMILY_SET:
case PROP_STYLE_SET:
case PROP_VARIANT_SET:
case PROP_WEIGHT_SET:
case PROP_STRETCH_SET:
case PROP_SIZE_SET:
{
PangoFontMask mask = get_property_font_set_mask (param_id);
g_value_set_boolean (value, (pango_font_description_get_set_fields (celltext->font) & mask) != 0);
break;
}
case PROP_SCALE_SET:
g_value_set_boolean (value, celltext->scale_set);
break;
case PROP_EDITABLE_SET:
g_value_set_boolean (value, celltext->editable_set);
break;
case PROP_STRIKETHROUGH_SET:
g_value_set_boolean (value, celltext->strikethrough_set);
break;
case PROP_UNDERLINE_SET:
g_value_set_boolean (value, celltext->underline_set);
break;
case PROP_RISE_SET:
g_value_set_boolean (value, celltext->rise_set);
break;
case PROP_BACKGROUND:
case PROP_FOREGROUND:
case PROP_MARKUP:
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
set_bg_color (GtkCellRendererText *celltext,
GdkColor *color)
{
if (color)
{
if (!celltext->background_set)
{
celltext->background_set = TRUE;
g_object_notify (G_OBJECT (celltext), "background_set");
}
celltext->background.red = color->red;
celltext->background.green = color->green;
celltext->background.blue = color->blue;
}
else
{
if (celltext->background_set)
{
celltext->background_set = FALSE;
g_object_notify (G_OBJECT (celltext), "background_set");
}
}
}
static void
set_fg_color (GtkCellRendererText *celltext,
GdkColor *color)
{
if (color)
{
if (!celltext->foreground_set)
{
celltext->foreground_set = TRUE;
g_object_notify (G_OBJECT (celltext), "foreground_set");
}
celltext->foreground.red = color->red;
celltext->foreground.green = color->green;
celltext->foreground.blue = color->blue;
}
else
{
if (celltext->foreground_set)
{
celltext->foreground_set = FALSE;
g_object_notify (G_OBJECT (celltext), "foreground_set");
}
}
}
static PangoFontMask
set_font_desc_fields (PangoFontDescription *desc,
PangoFontMask to_set)
{
PangoFontMask changed_mask = 0;
if (to_set & PANGO_FONT_MASK_FAMILY)
{
const char *family = pango_font_description_get_family (desc);
if (!family)
{
family = "sans";
changed_mask |= PANGO_FONT_MASK_FAMILY;
}
pango_font_description_set_family (desc, family);
}
if (to_set & PANGO_FONT_MASK_STYLE)
pango_font_description_set_style (desc, pango_font_description_get_style (desc));
if (to_set & PANGO_FONT_MASK_VARIANT)
pango_font_description_set_variant (desc, pango_font_description_get_variant (desc));
if (to_set & PANGO_FONT_MASK_WEIGHT)
pango_font_description_set_weight (desc, pango_font_description_get_weight (desc));
if (to_set & PANGO_FONT_MASK_STRETCH)
pango_font_description_set_stretch (desc, pango_font_description_get_stretch (desc));
if (to_set & PANGO_FONT_MASK_SIZE)
{
gint size = pango_font_description_get_size (desc);
if (size <= 0)
{
size = 10 * PANGO_SCALE;
changed_mask |= PANGO_FONT_MASK_SIZE;
}
pango_font_description_set_size (desc, size);
}
return changed_mask;
}
static void
notify_set_changed (GObject *object,
PangoFontMask changed_mask)
{
if (changed_mask & PANGO_FONT_MASK_FAMILY)
g_object_notify (object, "family_set");
if (changed_mask & PANGO_FONT_MASK_STYLE)
g_object_notify (object, "style_set");
if (changed_mask & PANGO_FONT_MASK_VARIANT)
g_object_notify (object, "variant_set");
if (changed_mask & PANGO_FONT_MASK_WEIGHT)
g_object_notify (object, "weight_set");
if (changed_mask & PANGO_FONT_MASK_STRETCH)
g_object_notify (object, "stretch_set");
if (changed_mask & PANGO_FONT_MASK_SIZE)
g_object_notify (object, "size_set");
}
static void
notify_fields_changed (GObject *object,
PangoFontMask changed_mask)
{
if (changed_mask & PANGO_FONT_MASK_FAMILY)
g_object_notify (object, "family");
if (changed_mask & PANGO_FONT_MASK_STYLE)
g_object_notify (object, "style");
if (changed_mask & PANGO_FONT_MASK_VARIANT)
g_object_notify (object, "variant");
if (changed_mask & PANGO_FONT_MASK_WEIGHT)
g_object_notify (object, "weight");
if (changed_mask & PANGO_FONT_MASK_STRETCH)
g_object_notify (object, "stretch");
if (changed_mask & PANGO_FONT_MASK_SIZE)
g_object_notify (object, "size");
}
static void
set_font_description (GtkCellRendererText *celltext,
PangoFontDescription *font_desc)
{
GObject *object = G_OBJECT (celltext);
PangoFontDescription *new_font_desc;
PangoFontMask old_mask, new_mask, changed_mask, set_changed_mask;
if (font_desc)
new_font_desc = pango_font_description_copy (font_desc);
else
new_font_desc = pango_font_description_new ();
old_mask = pango_font_description_get_set_fields (celltext->font);
new_mask = pango_font_description_get_set_fields (new_font_desc);
changed_mask = old_mask | new_mask;
set_changed_mask = old_mask ^ new_mask;
pango_font_description_free (celltext->font);
celltext->font = new_font_desc;
g_object_freeze_notify (object);
g_object_notify (object, "font_desc");
g_object_notify (object, "font");
if (changed_mask & PANGO_FONT_MASK_FAMILY)
g_object_notify (object, "family");
if (changed_mask & PANGO_FONT_MASK_STYLE)
g_object_notify (object, "style");
if (changed_mask & PANGO_FONT_MASK_VARIANT)
g_object_notify (object, "variant");
if (changed_mask & PANGO_FONT_MASK_WEIGHT)
g_object_notify (object, "weight");
if (changed_mask & PANGO_FONT_MASK_STRETCH)
g_object_notify (object, "stretch");
if (changed_mask & PANGO_FONT_MASK_SIZE)
{
g_object_notify (object, "size");
g_object_notify (object, "size_points");
}
notify_set_changed (object, set_changed_mask);
g_object_thaw_notify (object);
}
static void
gtk_cell_renderer_text_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
switch (param_id)
{
case PROP_TEXT:
if (celltext->text)
g_free (celltext->text);
celltext->text = g_strdup (g_value_get_string (value));
g_object_notify (object, "text");
break;
case PROP_ATTRIBUTES:
if (celltext->extra_attrs)
pango_attr_list_unref (celltext->extra_attrs);
celltext->extra_attrs = g_value_get_boxed (value);
if (celltext->extra_attrs)
pango_attr_list_ref (celltext->extra_attrs);
break;
case PROP_MARKUP:
{
const gchar *str;
gchar *text = NULL;
GError *error = NULL;
PangoAttrList *attrs = NULL;
if (celltext->text)
g_free (celltext->text);
if (celltext->extra_attrs)
pango_attr_list_unref (celltext->extra_attrs);
str = g_value_get_string (value);
if (str && !pango_parse_markup (str,
-1,
0,
&attrs,
&text,
NULL,
&error))
{
g_warning ("Failed to set cell text from markup due to error parsing markup: %s",
error->message);
g_error_free (error);
return;
}
celltext->text = text;
celltext->extra_attrs = attrs;
}
break;
case PROP_BACKGROUND:
{
GdkColor color;
if (!g_value_get_string (value))
set_bg_color (celltext, NULL); /* reset to backgrounmd_set to FALSE */
else if (gdk_color_parse (g_value_get_string (value), &color))
set_bg_color (celltext, &color);
else
g_warning ("Don't know color `%s'", g_value_get_string (value));
g_object_notify (object, "background_gdk");
}
break;
case PROP_FOREGROUND:
{
GdkColor color;
if (!g_value_get_string (value))
set_fg_color (celltext, NULL); /* reset to foreground_set to FALSE */
else if (gdk_color_parse (g_value_get_string (value), &color))
set_fg_color (celltext, &color);
else
g_warning ("Don't know color `%s'", g_value_get_string (value));
g_object_notify (object, "foreground_gdk");
}
break;
case PROP_BACKGROUND_GDK:
/* This notifies the GObject itself. */
set_bg_color (celltext, g_value_get_boxed (value));
break;
case PROP_FOREGROUND_GDK:
/* This notifies the GObject itself. */
set_fg_color (celltext, g_value_get_boxed (value));
break;
case PROP_FONT:
{
PangoFontDescription *font_desc = NULL;
const gchar *name;
name = g_value_get_string (value);
if (name)
font_desc = pango_font_description_from_string (name);
set_font_description (celltext, font_desc);
if (celltext->fixed_height_rows != -1)
celltext->calc_fixed_height = TRUE;
}
break;
case PROP_FONT_DESC:
set_font_description (celltext, g_value_get_boxed (value));
if (celltext->fixed_height_rows != -1)
celltext->calc_fixed_height = TRUE;
break;
case PROP_FAMILY:
case PROP_STYLE:
case PROP_VARIANT:
case PROP_WEIGHT:
case PROP_STRETCH:
case PROP_SIZE:
case PROP_SIZE_POINTS:
{
PangoFontMask old_set_mask = pango_font_description_get_set_fields (celltext->font);
switch (param_id)
{
case PROP_FAMILY:
pango_font_description_set_family (celltext->font,
g_value_get_string (value));
break;
case PROP_STYLE:
pango_font_description_set_style (celltext->font,
g_value_get_enum (value));
break;
case PROP_VARIANT:
pango_font_description_set_variant (celltext->font,
g_value_get_enum (value));
break;
case PROP_WEIGHT:
pango_font_description_set_weight (celltext->font,
g_value_get_int (value));
break;
case PROP_STRETCH:
pango_font_description_set_stretch (celltext->font,
g_value_get_enum (value));
break;
case PROP_SIZE:
pango_font_description_set_size (celltext->font,
g_value_get_int (value));
g_object_notify (object, "size_points");
break;
case PROP_SIZE_POINTS:
pango_font_description_set_size (celltext->font,
g_value_get_double (value) * PANGO_SCALE);
g_object_notify (object, "size");
break;
}
if (celltext->fixed_height_rows != -1)
celltext->calc_fixed_height = TRUE;
notify_set_changed (object, old_set_mask & pango_font_description_get_set_fields (celltext->font));
g_object_notify (object, "font_desc");
g_object_notify (object, "font");
break;
}
case PROP_SCALE:
celltext->font_scale = g_value_get_double (value);
celltext->scale_set = TRUE;
if (celltext->fixed_height_rows != -1)
celltext->calc_fixed_height = TRUE;
g_object_notify (object, "scale_set");
break;
case PROP_EDITABLE:
celltext->editable = g_value_get_boolean (value);
celltext->editable_set = TRUE;
if (celltext->editable)
GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_EDITABLE;
else
GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_INERT;
g_object_notify (object, "editable_set");
break;
case PROP_STRIKETHROUGH:
celltext->strikethrough = g_value_get_boolean (value);
celltext->strikethrough_set = TRUE;
g_object_notify (object, "strikethrough_set");
break;
case PROP_UNDERLINE:
celltext->underline_style = g_value_get_enum (value);
celltext->underline_set = TRUE;
g_object_notify (object, "underline_set");
break;
case PROP_RISE:
celltext->rise = g_value_get_int (value);
celltext->rise_set = TRUE;
g_object_notify (object, "rise_set");
if (celltext->fixed_height_rows != -1)
celltext->calc_fixed_height = TRUE;
break;
case PROP_BACKGROUND_SET:
celltext->background_set = g_value_get_boolean (value);
break;
case PROP_FOREGROUND_SET:
celltext->foreground_set = g_value_get_boolean (value);
break;
case PROP_FAMILY_SET:
case PROP_STYLE_SET:
case PROP_VARIANT_SET:
case PROP_WEIGHT_SET:
case PROP_STRETCH_SET:
case PROP_SIZE_SET:
if (!g_value_get_boolean (value))
{
pango_font_description_unset_fields (celltext->font,
get_property_font_set_mask (param_id));
}
else
{
PangoFontMask changed_mask;
changed_mask = set_font_desc_fields (celltext->font,
get_property_font_set_mask (param_id));
notify_fields_changed (G_OBJECT (celltext), changed_mask);
}
break;
case PROP_SCALE_SET:
celltext->scale_set = g_value_get_boolean (value);
break;
case PROP_EDITABLE_SET:
celltext->editable_set = g_value_get_boolean (value);
break;
case PROP_STRIKETHROUGH_SET:
celltext->strikethrough_set = g_value_get_boolean (value);
break;
case PROP_UNDERLINE_SET:
celltext->underline_set = g_value_get_boolean (value);
break;
case PROP_RISE_SET:
celltext->rise_set = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
/**
* gtk_cell_renderer_text_new:
*
* Creates a new #GtkCellRendererText. Adjust how text is drawn using
* object properties. Object properties can be
* set globally (with g_object_set()). Also, with #GtkTreeViewColumn,
* you can bind a property to a value in a #GtkTreeModel. For example,
* you can bind the "text" property on the cell renderer to a string
* value in the model, thus rendering a different string in each row
* of the #GtkTreeView
*
* Return value: the new cell renderer
**/
GtkCellRenderer *
gtk_cell_renderer_text_new (void)
{
return GTK_CELL_RENDERER (g_object_new (gtk_cell_renderer_text_get_type (), NULL));
}
static void
add_attr (PangoAttrList *attr_list,
PangoAttribute *attr)
{
attr->start_index = 0;
attr->end_index = G_MAXINT;
pango_attr_list_insert (attr_list, attr);
}
static PangoLayout*
get_layout (GtkCellRendererText *celltext,
GtkWidget *widget,
gboolean will_render,
GtkCellRendererState flags)
{
PangoAttrList *attr_list;
PangoLayout *layout;
PangoUnderline uline;
layout = gtk_widget_create_pango_layout (widget, celltext->text);
if (celltext->extra_attrs)
attr_list = pango_attr_list_copy (celltext->extra_attrs);
else
attr_list = pango_attr_list_new ();
if (will_render)
{
/* Add options that affect appearance but not size */
/* note that background doesn't go here, since it affects
* background_area not the PangoLayout area
*/
if (celltext->foreground_set)
{
PangoColor color;
color = celltext->foreground;
add_attr (attr_list,
pango_attr_foreground_new (color.red, color.green, color.blue));
}
if (celltext->strikethrough_set)
add_attr (attr_list,
pango_attr_strikethrough_new (celltext->strikethrough));
}
add_attr (attr_list, pango_attr_font_desc_new (celltext->font));
if (celltext->scale_set &&
celltext->font_scale != 1.0)
add_attr (attr_list, pango_attr_scale_new (celltext->font_scale));
if (celltext->underline_set)
uline = celltext->underline_style;
else
uline = PANGO_UNDERLINE_NONE;
if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT)
{
switch (uline)
{
case PANGO_UNDERLINE_NONE:
uline = PANGO_UNDERLINE_SINGLE;
break;
case PANGO_UNDERLINE_SINGLE:
uline = PANGO_UNDERLINE_DOUBLE;
break;
default:
break;
}
}
if (uline != PANGO_UNDERLINE_NONE)
add_attr (attr_list, pango_attr_underline_new (celltext->underline_style));
if (celltext->rise_set)
add_attr (attr_list, pango_attr_rise_new (celltext->rise));
pango_layout_set_attributes (layout, attr_list);
pango_layout_set_width (layout, -1);
pango_attr_list_unref (attr_list);
return layout;
}
static void
gtk_cell_renderer_text_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
PangoRectangle rect;
PangoLayout *layout;
if (celltext->calc_fixed_height)
{
PangoContext *context;
PangoFontMetrics *metrics;
PangoFontDescription *font_desc;
gint row_height;
font_desc = pango_font_description_copy (widget->style->font_desc);
pango_font_description_merge (font_desc, celltext->font, TRUE);
if (celltext->scale_set)
pango_font_description_set_size (font_desc,
celltext->font_scale * pango_font_description_get_size (font_desc));
context = gtk_widget_get_pango_context (widget);
metrics = pango_context_get_metrics (context,
font_desc,
pango_context_get_language (context));
row_height = (pango_font_metrics_get_ascent (metrics) +
pango_font_metrics_get_descent (metrics));
pango_font_metrics_unref (metrics);
gtk_cell_renderer_set_fixed_size (cell,
cell->width, 2*cell->ypad +
celltext->fixed_height_rows * PANGO_PIXELS (row_height));
if (height)
{
*height = cell->height;
height = NULL;
}
celltext->calc_fixed_height = FALSE;
if (width == NULL)
return;
}
layout = get_layout (celltext, widget, FALSE, 0);
pango_layout_get_pixel_extents (layout, NULL, &rect);
if (width)
*width = GTK_CELL_RENDERER (celltext)->xpad * 2 + rect.width;
if (height)
*height = GTK_CELL_RENDERER (celltext)->ypad * 2 + rect.height;
if (cell_area)
{
if (x_offset)
{
*x_offset = cell->xalign * (cell_area->width - rect.width - (2 * cell->xpad));
*x_offset = MAX (*x_offset, 0);
}
if (y_offset)
{
*y_offset = cell->yalign * (cell_area->height - rect.height - (2 * cell->ypad));
*y_offset = MAX (*y_offset, 0);
}
}
g_object_unref (G_OBJECT (layout));
}
static void
gtk_cell_renderer_text_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags)
{
GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
PangoLayout *layout;
GtkStateType state;
gint x_offset;
gint y_offset;
layout = get_layout (celltext, widget, TRUE, flags);
gtk_cell_renderer_text_get_size (cell, widget, cell_area, &x_offset, &y_offset, NULL, NULL);
if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
{
if (GTK_WIDGET_HAS_FOCUS (widget))
state = GTK_STATE_SELECTED;
else
state = GTK_STATE_ACTIVE;
}
else
{
if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
}
if (celltext->background_set && state != GTK_STATE_SELECTED)
{
GdkColor color;
GdkGC *gc;
color.red = celltext->background.red;
color.green = celltext->background.green;
color.blue = celltext->background.blue;
gc = gdk_gc_new (window);
gdk_gc_set_rgb_fg_color (gc, &color);
gdk_draw_rectangle (window,
gc,
TRUE,
background_area->x,
background_area->y,
background_area->width,
background_area->height);
g_object_unref (G_OBJECT (gc));
}
gtk_paint_layout (widget->style,
window,
state,
TRUE,
cell_area,
widget,
"cellrenderertext",
cell_area->x + x_offset + cell->xpad,
cell_area->y + y_offset + cell->ypad,
layout);
g_object_unref (G_OBJECT (layout));
}
static void
gtk_cell_renderer_text_editing_done (GtkCellEditable *entry,
gpointer data)
{
const gchar *path;
const gchar *new_text;
if (GTK_ENTRY (entry)->editing_canceled)
return;
path = g_object_get_data (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH);
new_text = gtk_entry_get_text (GTK_ENTRY (entry));
gtk_signal_emit (GTK_OBJECT (data), text_cell_renderer_signals[EDITED], path, new_text);
}
static GtkCellEditable *
gtk_cell_renderer_text_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererText *celltext;
GtkWidget *entry;
celltext = GTK_CELL_RENDERER_TEXT (cell);
/* If the cell isn't editable we return NULL. */
if (celltext->editable == FALSE)
return NULL;
entry = g_object_new (GTK_TYPE_ENTRY,
"has_frame", FALSE,
NULL);
gtk_entry_set_text (GTK_ENTRY (entry), celltext->text);
g_object_set_data_full (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH, g_strdup (path), g_free);
gtk_editable_select_region (GTK_EDITABLE (entry), 0, -1);
gtk_widget_show (entry);
gtk_signal_connect (GTK_OBJECT (entry),
"editing_done",
G_CALLBACK (gtk_cell_renderer_text_editing_done),
celltext);
return GTK_CELL_EDITABLE (entry);
}
/**
* gtk_cell_renderer_text_set_fixed_height_from_font:
* @renderer: A #GtkCellRendererText
* @number_of_rows: Number of rows of text each cell renderer is allocated, or -1
*
* Sets the height of a renderer to explicitly be determined by the "font" and
* "y_pad" property set on it. Further changes in these properties do not
* affect the height, so they must be accompanied by a subsequent call to this
* function. Using this function is unflexible, and should really only be used
* if calculating the size of a cell is too slow (ie, a massive number of cells
* displayed). If @number_of_rows is -1, then the fixed height is unset, and
* the height is determined by the properties again.
**/
void
gtk_cell_renderer_text_set_fixed_height_from_font (GtkCellRendererText *renderer,
gint number_of_rows)
{
g_return_if_fail (GTK_IS_CELL_RENDERER_TEXT (renderer));
g_return_if_fail (number_of_rows == -1 || number_of_rows > 0);
if (number_of_rows == -1)
{
gtk_cell_renderer_set_fixed_size (GTK_CELL_RENDERER (renderer),
GTK_CELL_RENDERER (renderer)->width,
-1);
}
else
{
renderer->fixed_height_rows = number_of_rows;
renderer->calc_fixed_height = TRUE;
}
}
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