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gtk2/gtk/gtkcellrenderertext.c
Simon Feltman 283c974680 gtkcellrenderertext: Sink floating entry before using as signal argument 
Sink the GtkEntry assigned to the private structure of GtkCellRendererText
before signals containing it as an argument are sent out. This keeps
language bindings from sinking the reference and then destroying the entry
when the signal closure is finished.

https://bugzilla.gnome.org/show_bug.cgi?id=693400
2013-02-11 17:46:33 -08:00

2284 lines
73 KiB
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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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcellrenderertext.h"
#include <stdlib.h>
#include "gtkeditable.h"
#include "gtkentry.h"
#include "gtksizerequest.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtktreeprivate.h"
#include "a11y/gtktextcellaccessible.h"
/**
* SECTION:gtkcellrenderertext
* @Short_description: Renders text in a cell
* @Title: GtkCellRendererText
*
* A #GtkCellRendererText renders a given text in its cell, using the font, color and
* style information provided by its properties. The text will be ellipsized if it is
* too long and the #GtkCellRendererText:ellipsize property allows it.
*
* If the #GtkCellRenderer:mode is %GTK_CELL_RENDERER_MODE_EDITABLE,
* the #GtkCellRendererText allows to edit its text using an entry.
*/
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_render (GtkCellRenderer *cell,
cairo_t *cr,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
static GtkCellEditable *gtk_cell_renderer_text_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
static void gtk_cell_renderer_text_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimal_size,
gint *natural_size);
static void gtk_cell_renderer_text_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimal_size,
gint *natural_size);
static void gtk_cell_renderer_text_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_cell_renderer_text_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area);
enum {
EDITED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_TEXT,
PROP_MARKUP,
PROP_ATTRIBUTES,
PROP_SINGLE_PARAGRAPH_MODE,
PROP_WIDTH_CHARS,
PROP_MAX_WIDTH_CHARS,
PROP_WRAP_WIDTH,
PROP_ALIGN,
PROP_PLACEHOLDER_TEXT,
/* Style args */
PROP_BACKGROUND,
PROP_FOREGROUND,
PROP_BACKGROUND_GDK,
PROP_FOREGROUND_GDK,
PROP_BACKGROUND_RGBA,
PROP_FOREGROUND_RGBA,
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,
PROP_LANGUAGE,
PROP_ELLIPSIZE,
PROP_WRAP_MODE,
/* 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,
PROP_LANGUAGE_SET,
PROP_ELLIPSIZE_SET,
PROP_ALIGN_SET
};
static guint text_cell_renderer_signals [LAST_SIGNAL];
#define GTK_CELL_RENDERER_TEXT_PATH "gtk-cell-renderer-text-path"
struct _GtkCellRendererTextPrivate
{
GtkWidget *entry;
PangoAttrList *extra_attrs;
GdkRGBA foreground;
GdkRGBA background;
PangoAlignment align;
PangoEllipsizeMode ellipsize;
PangoFontDescription *font;
PangoLanguage *language;
PangoUnderline underline_style;
PangoWrapMode wrap_mode;
gchar *text;
gchar *placeholder_text;
gdouble font_scale;
gint rise;
gint fixed_height_rows;
gint width_chars;
gint max_width_chars;
gint wrap_width;
guint in_entry_menu : 1;
guint strikethrough : 1;
guint editable : 1;
guint scale_set : 1;
guint foreground_set : 1;
guint background_set : 1;
guint underline_set : 1;
guint rise_set : 1;
guint strikethrough_set : 1;
guint editable_set : 1;
guint calc_fixed_height : 1;
guint single_paragraph : 1;
guint language_set : 1;
guint markup_set : 1;
guint ellipsize_set : 1;
guint align_set : 1;
gulong focus_out_id;
gulong populate_popup_id;
gulong entry_menu_popdown_timeout;
};
G_DEFINE_TYPE (GtkCellRendererText, gtk_cell_renderer_text, GTK_TYPE_CELL_RENDERER)
static void
gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
{
GtkCellRendererTextPrivate *priv;
GtkCellRenderer *cell = GTK_CELL_RENDERER (celltext);
celltext->priv = G_TYPE_INSTANCE_GET_PRIVATE (celltext,
GTK_TYPE_CELL_RENDERER_TEXT,
GtkCellRendererTextPrivate);
priv = celltext->priv;
gtk_cell_renderer_set_alignment (cell, 0.0, 0.5);
gtk_cell_renderer_set_padding (cell, 2, 2);
priv->font_scale = 1.0;
priv->fixed_height_rows = -1;
priv->font = pango_font_description_new ();
priv->width_chars = -1;
priv->max_width_chars = -1;
priv->wrap_width = -1;
priv->wrap_mode = PANGO_WRAP_CHAR;
priv->align = PANGO_ALIGN_LEFT;
priv->align_set = FALSE;
}
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);
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->render = gtk_cell_renderer_text_render;
cell_class->start_editing = gtk_cell_renderer_text_start_editing;
cell_class->get_preferred_width = gtk_cell_renderer_text_get_preferred_width;
cell_class->get_preferred_height = gtk_cell_renderer_text_get_preferred_height;
cell_class->get_preferred_height_for_width = gtk_cell_renderer_text_get_preferred_height_for_width;
cell_class->get_aligned_area = gtk_cell_renderer_text_get_aligned_area;
g_object_class_install_property (object_class,
PROP_TEXT,
g_param_spec_string ("text",
P_("Text"),
P_("Text to render"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_MARKUP,
g_param_spec_string ("markup",
P_("Markup"),
P_("Marked up text to render"),
NULL,
GTK_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_ATTRIBUTES,
g_param_spec_boxed ("attributes",
P_("Attributes"),
P_("A list of style attributes to apply to the text of the renderer"),
PANGO_TYPE_ATTR_LIST,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SINGLE_PARAGRAPH_MODE,
g_param_spec_boolean ("single-paragraph-mode",
P_("Single Paragraph Mode"),
P_("Whether to keep all text in a single paragraph"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_BACKGROUND,
g_param_spec_string ("background",
P_("Background color name"),
P_("Background color as a string"),
NULL,
GTK_PARAM_WRITABLE));
/**
* GtkCellRendererText:background-gdk:
*
* Background color as a #GdkColor
*
* Deprecated: 3.4: Use #GtkCellRendererText:background-rgba instead.
*/
g_object_class_install_property (object_class,
PROP_BACKGROUND_GDK,
g_param_spec_boxed ("background-gdk",
P_("Background color"),
P_("Background color as a GdkColor"),
GDK_TYPE_COLOR,
GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
/**
* GtkCellRendererText:background-rgba:
*
* Background color as a #GdkRGBA
*
* Since: 3.0
*/
g_object_class_install_property (object_class,
PROP_BACKGROUND_RGBA,
g_param_spec_boxed ("background-rgba",
P_("Background color as RGBA"),
P_("Background color as a GdkRGBA"),
GDK_TYPE_RGBA,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FOREGROUND,
g_param_spec_string ("foreground",
P_("Foreground color name"),
P_("Foreground color as a string"),
NULL,
GTK_PARAM_WRITABLE));
/**
* GtkCellRendererText:foreground-gdk:
*
* Foreground color as a #GdkColor
*
* Deprecated: 3.4: Use #GtkCellRendererText:foreground-rgba instead.
*/
g_object_class_install_property (object_class,
PROP_FOREGROUND_GDK,
g_param_spec_boxed ("foreground-gdk",
P_("Foreground color"),
P_("Foreground color as a GdkColor"),
GDK_TYPE_COLOR,
GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
/**
* GtkCellRendererText:foreground-rgba:
*
* Foreground color as a #GdkRGBA
*
* Since: 3.0
*/
g_object_class_install_property (object_class,
PROP_FOREGROUND_RGBA,
g_param_spec_boxed ("foreground-rgba",
P_("Foreground color as RGBA"),
P_("Foreground color as a GdkRGBA"),
GDK_TYPE_RGBA,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_EDITABLE,
g_param_spec_boolean ("editable",
P_("Editable"),
P_("Whether the text can be modified by the user"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FONT,
g_param_spec_string ("font",
P_("Font"),
P_("Font description as a string, e.g. \"Sans Italic 12\""),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FONT_DESC,
g_param_spec_boxed ("font-desc",
P_("Font"),
P_("Font description as a PangoFontDescription struct"),
PANGO_TYPE_FONT_DESCRIPTION,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FAMILY,
g_param_spec_string ("family",
P_("Font family"),
P_("Name of the font family, e.g. Sans, Helvetica, Times, Monospace"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_STYLE,
g_param_spec_enum ("style",
P_("Font style"),
P_("Font style"),
PANGO_TYPE_STYLE,
PANGO_STYLE_NORMAL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_VARIANT,
g_param_spec_enum ("variant",
P_("Font variant"),
P_("Font variant"),
PANGO_TYPE_VARIANT,
PANGO_VARIANT_NORMAL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_WEIGHT,
g_param_spec_int ("weight",
P_("Font weight"),
P_("Font weight"),
0,
G_MAXINT,
PANGO_WEIGHT_NORMAL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_STRETCH,
g_param_spec_enum ("stretch",
P_("Font stretch"),
P_("Font stretch"),
PANGO_TYPE_STRETCH,
PANGO_STRETCH_NORMAL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SIZE,
g_param_spec_int ("size",
P_("Font size"),
P_("Font size"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SIZE_POINTS,
g_param_spec_double ("size-points",
P_("Font points"),
P_("Font size in points"),
0.0,
G_MAXDOUBLE,
0.0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SCALE,
g_param_spec_double ("scale",
P_("Font scale"),
P_("Font scaling factor"),
0.0,
G_MAXDOUBLE,
1.0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_RISE,
g_param_spec_int ("rise",
P_("Rise"),
P_("Offset of text above the baseline "
"(below the baseline if rise is negative)"),
-G_MAXINT,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_STRIKETHROUGH,
g_param_spec_boolean ("strikethrough",
P_("Strikethrough"),
P_("Whether to strike through the text"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_UNDERLINE,
g_param_spec_enum ("underline",
P_("Underline"),
P_("Style of underline for this text"),
PANGO_TYPE_UNDERLINE,
PANGO_UNDERLINE_NONE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_LANGUAGE,
g_param_spec_string ("language",
P_("Language"),
P_("The language this text is in, as an ISO code. "
"Pango can use this as a hint when rendering the text. "
"If you don't understand this parameter, you probably don't need it"),
NULL,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:ellipsize:
*
* Specifies the preferred place to ellipsize the string, if the cell renderer
* does not have enough room to display the entire string. Setting it to
* %PANGO_ELLIPSIZE_NONE turns off ellipsizing. See the wrap-width property
* for another way of making the text fit into a given width.
*
* Since: 2.6
*/
g_object_class_install_property (object_class,
PROP_ELLIPSIZE,
g_param_spec_enum ("ellipsize",
P_("Ellipsize"),
P_("The preferred place to ellipsize the string, "
"if the cell renderer does not have enough room "
"to display the entire string"),
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:width-chars:
*
* The desired width of the cell, in characters. If this property is set to
* -1, the width will be calculated automatically, otherwise the cell will
* request either 3 characters or the property value, whichever is greater.
*
* Since: 2.6
**/
g_object_class_install_property (object_class,
PROP_WIDTH_CHARS,
g_param_spec_int ("width-chars",
P_("Width In Characters"),
P_("The desired width of the label, in characters"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:max-width-chars:
*
* The desired maximum width of the cell, in characters. If this property
* is set to -1, the width will be calculated automatically.
*
* For cell renderers that ellipsize or wrap text; this property
* controls the maximum reported width of the cell. The
* cell should not receive any greater allocation unless it is
* set to expand in its #GtkCellLayout and all of the cell's siblings
* have received their natural width.
*
* Since: 3.0
**/
g_object_class_install_property (object_class,
PROP_MAX_WIDTH_CHARS,
g_param_spec_int ("max-width-chars",
P_("Maximum Width In Characters"),
P_("The maximum width of the cell, in characters"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:wrap-mode:
*
* Specifies how to break the string into multiple lines, if the cell
* renderer does not have enough room to display the entire string.
* This property has no effect unless the wrap-width property is set.
*
* Since: 2.8
*/
g_object_class_install_property (object_class,
PROP_WRAP_MODE,
g_param_spec_enum ("wrap-mode",
P_("Wrap mode"),
P_("How to break the string into multiple lines, "
"if the cell renderer does not have enough room "
"to display the entire string"),
PANGO_TYPE_WRAP_MODE,
PANGO_WRAP_CHAR,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:wrap-width:
*
* Specifies the minimum width at which the text is wrapped. The wrap-mode property can
* be used to influence at what character positions the line breaks can be placed.
* Setting wrap-width to -1 turns wrapping off.
*
* Since: 2.8
*/
g_object_class_install_property (object_class,
PROP_WRAP_WIDTH,
g_param_spec_int ("wrap-width",
P_("Wrap width"),
P_("The width at which the text is wrapped"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:alignment:
*
* Specifies how to align the lines of text with respect to each other.
*
* Note that this property describes how to align the lines of text in
* case there are several of them. The "xalign" property of #GtkCellRenderer,
* on the other hand, sets the horizontal alignment of the whole text.
*
* Since: 2.10
*/
g_object_class_install_property (object_class,
PROP_ALIGN,
g_param_spec_enum ("alignment",
P_("Alignment"),
P_("How to align the lines"),
PANGO_TYPE_ALIGNMENT,
PANGO_ALIGN_LEFT,
GTK_PARAM_READWRITE));
/**
* GtkCellRendererText:placeholder-text:
*
* The text that will be displayed in the #GtkCellRenderer if
* #GtkCellRendererText:editable is %TRUE and the cell is empty.
*
* Since 3.6
*/
g_object_class_install_property (object_class,
PROP_PLACEHOLDER_TEXT,
g_param_spec_string ("placeholder-text",
P_("Placeholder text"),
P_("Text rendered when an editable cell is empty"),
NULL,
GTK_PARAM_READWRITE));
/* 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, GTK_PARAM_READWRITE))
ADD_SET_PROP ("background-set", PROP_BACKGROUND_SET,
P_("Background set"),
P_("Whether this tag affects the background color"));
ADD_SET_PROP ("foreground-set", PROP_FOREGROUND_SET,
P_("Foreground set"),
P_("Whether this tag affects the foreground color"));
ADD_SET_PROP ("editable-set", PROP_EDITABLE_SET,
P_("Editability set"),
P_("Whether this tag affects text editability"));
ADD_SET_PROP ("family-set", PROP_FAMILY_SET,
P_("Font family set"),
P_("Whether this tag affects the font family"));
ADD_SET_PROP ("style-set", PROP_STYLE_SET,
P_("Font style set"),
P_("Whether this tag affects the font style"));
ADD_SET_PROP ("variant-set", PROP_VARIANT_SET,
P_("Font variant set"),
P_("Whether this tag affects the font variant"));
ADD_SET_PROP ("weight-set", PROP_WEIGHT_SET,
P_("Font weight set"),
P_("Whether this tag affects the font weight"));
ADD_SET_PROP ("stretch-set", PROP_STRETCH_SET,
P_("Font stretch set"),
P_("Whether this tag affects the font stretch"));
ADD_SET_PROP ("size-set", PROP_SIZE_SET,
P_("Font size set"),
P_("Whether this tag affects the font size"));
ADD_SET_PROP ("scale-set", PROP_SCALE_SET,
P_("Font scale set"),
P_("Whether this tag scales the font size by a factor"));
ADD_SET_PROP ("rise-set", PROP_RISE_SET,
P_("Rise set"),
P_("Whether this tag affects the rise"));
ADD_SET_PROP ("strikethrough-set", PROP_STRIKETHROUGH_SET,
P_("Strikethrough set"),
P_("Whether this tag affects strikethrough"));
ADD_SET_PROP ("underline-set", PROP_UNDERLINE_SET,
P_("Underline set"),
P_("Whether this tag affects underlining"));
ADD_SET_PROP ("language-set", PROP_LANGUAGE_SET,
P_("Language set"),
P_("Whether this tag affects the language the text is rendered as"));
ADD_SET_PROP ("ellipsize-set", PROP_ELLIPSIZE_SET,
P_("Ellipsize set"),
P_("Whether this tag affects the ellipsize mode"));
ADD_SET_PROP ("align-set", PROP_ALIGN_SET,
P_("Align set"),
P_("Whether this tag affects the alignment mode"));
/**
* GtkCellRendererText::edited:
* @renderer: the object which received the signal
* @path: the path identifying the edited cell
* @new_text: the new text
*
* This signal is emitted after @renderer has been edited.
*
* It is the responsibility of the application to update the model
* and store @new_text at the position indicated by @path.
*/
text_cell_renderer_signals [EDITED] =
g_signal_new (I_("edited"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCellRendererTextClass, edited),
NULL, NULL,
_gtk_marshal_VOID__STRING_STRING,
G_TYPE_NONE, 2,
G_TYPE_STRING,
G_TYPE_STRING);
g_type_class_add_private (object_class, sizeof (GtkCellRendererTextPrivate));
_gtk_cell_renderer_class_set_accessible_type (cell_class, GTK_TYPE_TEXT_CELL_ACCESSIBLE);
}
static void
gtk_cell_renderer_text_finalize (GObject *object)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
GtkCellRendererTextPrivate *priv = celltext->priv;
pango_font_description_free (priv->font);
g_free (priv->text);
g_free (priv->placeholder_text);
if (priv->extra_attrs)
pango_attr_list_unref (priv->extra_attrs);
if (priv->language)
g_object_unref (priv->language);
g_clear_object (&priv->entry);
G_OBJECT_CLASS (gtk_cell_renderer_text_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);
GtkCellRendererTextPrivate *priv = celltext->priv;
switch (param_id)
{
case PROP_TEXT:
g_value_set_string (value, priv->text);
break;
case PROP_ATTRIBUTES:
g_value_set_boxed (value, priv->extra_attrs);
break;
case PROP_SINGLE_PARAGRAPH_MODE:
g_value_set_boolean (value, priv->single_paragraph);
break;
case PROP_BACKGROUND_GDK:
{
GdkColor color;
color.red = (guint16) (priv->background.red * 65535);
color.green = (guint16) (priv->background.green * 65535);
color.blue = (guint16) (priv->background.blue * 65535);
g_value_set_boxed (value, &color);
}
break;
case PROP_FOREGROUND_GDK:
{
GdkColor color;
color.red = (guint16) (priv->foreground.red * 65535);
color.green = (guint16) (priv->foreground.green * 65535);
color.blue = (guint16) (priv->foreground.blue * 65535);
g_value_set_boxed (value, &color);
}
break;
case PROP_BACKGROUND_RGBA:
g_value_set_boxed (value, &priv->background);
break;
case PROP_FOREGROUND_RGBA:
g_value_set_boxed (value, &priv->foreground);
break;
case PROP_FONT:
g_value_take_string (value, pango_font_description_to_string (priv->font));
break;
case PROP_FONT_DESC:
g_value_set_boxed (value, priv->font);
break;
case PROP_FAMILY:
g_value_set_string (value, pango_font_description_get_family (priv->font));
break;
case PROP_STYLE:
g_value_set_enum (value, pango_font_description_get_style (priv->font));
break;
case PROP_VARIANT:
g_value_set_enum (value, pango_font_description_get_variant (priv->font));
break;
case PROP_WEIGHT:
g_value_set_int (value, pango_font_description_get_weight (priv->font));
break;
case PROP_STRETCH:
g_value_set_enum (value, pango_font_description_get_stretch (priv->font));
break;
case PROP_SIZE:
g_value_set_int (value, pango_font_description_get_size (priv->font));
break;
case PROP_SIZE_POINTS:
g_value_set_double (value, ((double)pango_font_description_get_size (priv->font)) / (double)PANGO_SCALE);
break;
case PROP_SCALE:
g_value_set_double (value, priv->font_scale);
break;
case PROP_EDITABLE:
g_value_set_boolean (value, priv->editable);
break;
case PROP_STRIKETHROUGH:
g_value_set_boolean (value, priv->strikethrough);
break;
case PROP_UNDERLINE:
g_value_set_enum (value, priv->underline_style);
break;
case PROP_RISE:
g_value_set_int (value, priv->rise);
break;
case PROP_LANGUAGE:
g_value_set_static_string (value, pango_language_to_string (priv->language));
break;
case PROP_ELLIPSIZE:
g_value_set_enum (value, priv->ellipsize);
break;
case PROP_WRAP_MODE:
g_value_set_enum (value, priv->wrap_mode);
break;
case PROP_WRAP_WIDTH:
g_value_set_int (value, priv->wrap_width);
break;
case PROP_ALIGN:
g_value_set_enum (value, priv->align);
break;
case PROP_BACKGROUND_SET:
g_value_set_boolean (value, priv->background_set);
break;
case PROP_FOREGROUND_SET:
g_value_set_boolean (value, priv->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 (priv->font) & mask) != 0);
break;
}
case PROP_SCALE_SET:
g_value_set_boolean (value, priv->scale_set);
break;
case PROP_EDITABLE_SET:
g_value_set_boolean (value, priv->editable_set);
break;
case PROP_STRIKETHROUGH_SET:
g_value_set_boolean (value, priv->strikethrough_set);
break;
case PROP_UNDERLINE_SET:
g_value_set_boolean (value, priv->underline_set);
break;
case PROP_RISE_SET:
g_value_set_boolean (value, priv->rise_set);
break;
case PROP_LANGUAGE_SET:
g_value_set_boolean (value, priv->language_set);
break;
case PROP_ELLIPSIZE_SET:
g_value_set_boolean (value, priv->ellipsize_set);
break;
case PROP_ALIGN_SET:
g_value_set_boolean (value, priv->align_set);
break;
case PROP_WIDTH_CHARS:
g_value_set_int (value, priv->width_chars);
break;
case PROP_MAX_WIDTH_CHARS:
g_value_set_int (value, priv->max_width_chars);
break;
case PROP_PLACEHOLDER_TEXT:
g_value_set_string (value, priv->placeholder_text);
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,
GdkRGBA *rgba)
{
GtkCellRendererTextPrivate *priv = celltext->priv;
if (rgba)
{
if (!priv->background_set)
{
priv->background_set = TRUE;
g_object_notify (G_OBJECT (celltext), "background-set");
}
priv->background = *rgba;
}
else
{
if (priv->background_set)
{
priv->background_set = FALSE;
g_object_notify (G_OBJECT (celltext), "background-set");
}
}
}
static void
set_fg_color (GtkCellRendererText *celltext,
GdkRGBA *rgba)
{
GtkCellRendererTextPrivate *priv = celltext->priv;
if (rgba)
{
if (!priv->foreground_set)
{
priv->foreground_set = TRUE;
g_object_notify (G_OBJECT (celltext), "foreground-set");
}
priv->foreground = *rgba;
}
else
{
if (priv->foreground_set)
{
priv->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)
{
GtkCellRendererTextPrivate *priv = celltext->priv;
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 (priv->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 (priv->font);
priv->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);
GtkCellRendererTextPrivate *priv = celltext->priv;
switch (param_id)
{
case PROP_TEXT:
g_free (priv->text);
if (priv->markup_set)
{
if (priv->extra_attrs)
pango_attr_list_unref (priv->extra_attrs);
priv->extra_attrs = NULL;
priv->markup_set = FALSE;
}
priv->text = g_value_dup_string (value);
g_object_notify (object, "text");
break;
case PROP_ATTRIBUTES:
if (priv->extra_attrs)
pango_attr_list_unref (priv->extra_attrs);
priv->extra_attrs = g_value_get_boxed (value);
if (priv->extra_attrs)
pango_attr_list_ref (priv->extra_attrs);
break;
case PROP_MARKUP:
{
const gchar *str;
gchar *text = NULL;
GError *error = NULL;
PangoAttrList *attrs = NULL;
str = g_value_get_string (value);
if (str && !pango_parse_markup (str,
-1,
0,
&attrs,
&text,
NULL,
&error))
{
g_warning ("Failed to set text from markup due to error parsing markup: %s",
error->message);
g_error_free (error);
return;
}
g_free (priv->text);
if (priv->extra_attrs)
pango_attr_list_unref (priv->extra_attrs);
priv->text = text;
priv->extra_attrs = attrs;
priv->markup_set = TRUE;
}
break;
case PROP_SINGLE_PARAGRAPH_MODE:
priv->single_paragraph = g_value_get_boolean (value);
break;
case PROP_BACKGROUND:
{
GdkRGBA rgba;
if (!g_value_get_string (value))
set_bg_color (celltext, NULL); /* reset to background_set to FALSE */
else if (gdk_rgba_parse (&rgba, g_value_get_string (value)))
set_bg_color (celltext, &rgba);
else
g_warning ("Don't know color `%s'", g_value_get_string (value));
g_object_notify (object, "background-gdk");
}
break;
case PROP_FOREGROUND:
{
GdkRGBA rgba;
if (!g_value_get_string (value))
set_fg_color (celltext, NULL); /* reset to foreground_set to FALSE */
else if (gdk_rgba_parse (&rgba, g_value_get_string (value)))
set_fg_color (celltext, &rgba);
else
g_warning ("Don't know color `%s'", g_value_get_string (value));
g_object_notify (object, "foreground-gdk");
}
break;
case PROP_BACKGROUND_GDK:
{
GdkColor *color;
color = g_value_get_boxed (value);
if (color)
{
GdkRGBA rgba;
rgba.red = color->red / 65535.;
rgba.green = color->green / 65535.;
rgba.blue = color->blue / 65535.;
rgba.alpha = 1;
set_bg_color (celltext, &rgba);
}
else
{
set_bg_color (celltext, NULL);
}
}
break;
case PROP_FOREGROUND_GDK:
{
GdkColor *color;
color = g_value_get_boxed (value);
if (color)
{
GdkRGBA rgba;
rgba.red = color->red / 65535.;
rgba.green = color->green / 65535.;
rgba.blue = color->blue / 65535.;
rgba.alpha = 1;
set_fg_color (celltext, &rgba);
}
else
{
set_fg_color (celltext, NULL);
}
}
break;
case PROP_BACKGROUND_RGBA:
/* This notifies the GObject itself. */
set_bg_color (celltext, g_value_get_boxed (value));
break;
case PROP_FOREGROUND_RGBA:
/* 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);
pango_font_description_free (font_desc);
if (priv->fixed_height_rows != -1)
priv->calc_fixed_height = TRUE;
}
break;
case PROP_FONT_DESC:
set_font_description (celltext, g_value_get_boxed (value));
if (priv->fixed_height_rows != -1)
priv->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 (priv->font);
switch (param_id)
{
case PROP_FAMILY:
pango_font_description_set_family (priv->font,
g_value_get_string (value));
break;
case PROP_STYLE:
pango_font_description_set_style (priv->font,
g_value_get_enum (value));
break;
case PROP_VARIANT:
pango_font_description_set_variant (priv->font,
g_value_get_enum (value));
break;
case PROP_WEIGHT:
pango_font_description_set_weight (priv->font,
g_value_get_int (value));
break;
case PROP_STRETCH:
pango_font_description_set_stretch (priv->font,
g_value_get_enum (value));
break;
case PROP_SIZE:
pango_font_description_set_size (priv->font,
g_value_get_int (value));
g_object_notify (object, "size-points");
break;
case PROP_SIZE_POINTS:
pango_font_description_set_size (priv->font,
g_value_get_double (value) * PANGO_SCALE);
g_object_notify (object, "size");
break;
}
if (priv->fixed_height_rows != -1)
priv->calc_fixed_height = TRUE;
notify_set_changed (object, old_set_mask & pango_font_description_get_set_fields (priv->font));
g_object_notify (object, "font-desc");
g_object_notify (object, "font");
break;
}
case PROP_SCALE:
priv->font_scale = g_value_get_double (value);
priv->scale_set = TRUE;
if (priv->fixed_height_rows != -1)
priv->calc_fixed_height = TRUE;
g_object_notify (object, "scale-set");
break;
case PROP_EDITABLE:
priv->editable = g_value_get_boolean (value);
priv->editable_set = TRUE;
if (priv->editable)
g_object_set (celltext, "mode", GTK_CELL_RENDERER_MODE_EDITABLE, NULL);
else
g_object_set (celltext, "mode", GTK_CELL_RENDERER_MODE_INERT, NULL);
g_object_notify (object, "editable-set");
break;
case PROP_STRIKETHROUGH:
priv->strikethrough = g_value_get_boolean (value);
priv->strikethrough_set = TRUE;
g_object_notify (object, "strikethrough-set");
break;
case PROP_UNDERLINE:
priv->underline_style = g_value_get_enum (value);
priv->underline_set = TRUE;
g_object_notify (object, "underline-set");
break;
case PROP_RISE:
priv->rise = g_value_get_int (value);
priv->rise_set = TRUE;
g_object_notify (object, "rise-set");
if (priv->fixed_height_rows != -1)
priv->calc_fixed_height = TRUE;
break;
case PROP_LANGUAGE:
priv->language_set = TRUE;
if (priv->language)
g_object_unref (priv->language);
priv->language = pango_language_from_string (g_value_get_string (value));
g_object_notify (object, "language-set");
break;
case PROP_ELLIPSIZE:
priv->ellipsize = g_value_get_enum (value);
priv->ellipsize_set = TRUE;
g_object_notify (object, "ellipsize-set");
break;
case PROP_WRAP_MODE:
priv->wrap_mode = g_value_get_enum (value);
break;
case PROP_WRAP_WIDTH:
priv->wrap_width = g_value_get_int (value);
break;
case PROP_WIDTH_CHARS:
priv->width_chars = g_value_get_int (value);
break;
case PROP_MAX_WIDTH_CHARS:
priv->max_width_chars = g_value_get_int (value);
break;
case PROP_ALIGN:
priv->align = g_value_get_enum (value);
priv->align_set = TRUE;
g_object_notify (object, "align-set");
break;
case PROP_BACKGROUND_SET:
priv->background_set = g_value_get_boolean (value);
break;
case PROP_FOREGROUND_SET:
priv->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 (priv->font,
get_property_font_set_mask (param_id));
}
else
{
PangoFontMask changed_mask;
changed_mask = set_font_desc_fields (priv->font,
get_property_font_set_mask (param_id));
notify_fields_changed (G_OBJECT (celltext), changed_mask);
}
break;
case PROP_SCALE_SET:
priv->scale_set = g_value_get_boolean (value);
break;
case PROP_EDITABLE_SET:
priv->editable_set = g_value_get_boolean (value);
break;
case PROP_STRIKETHROUGH_SET:
priv->strikethrough_set = g_value_get_boolean (value);
break;
case PROP_UNDERLINE_SET:
priv->underline_set = g_value_get_boolean (value);
break;
case PROP_RISE_SET:
priv->rise_set = g_value_get_boolean (value);
break;
case PROP_LANGUAGE_SET:
priv->language_set = g_value_get_boolean (value);
break;
case PROP_ELLIPSIZE_SET:
priv->ellipsize_set = g_value_get_boolean (value);
break;
case PROP_ALIGN_SET:
priv->align_set = g_value_get_boolean (value);
break;
case PROP_PLACEHOLDER_TEXT:
g_free (priv->placeholder_text);
priv->placeholder_text = g_value_dup_string (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 g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, NULL);
}
static inline gboolean
show_placeholder_text (GtkCellRendererText *celltext)
{
GtkCellRendererTextPrivate *priv = celltext->priv;
return priv->editable && priv->placeholder_text &&
(!priv->text || !priv->text[0]);
}
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,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererTextPrivate *priv = celltext->priv;
PangoAttrList *attr_list;
PangoLayout *layout;
PangoUnderline uline;
gint xpad;
gboolean placeholder_layout = show_placeholder_text (celltext);
layout = gtk_widget_create_pango_layout (widget, placeholder_layout ?
priv->placeholder_text : priv->text);
gtk_cell_renderer_get_padding (GTK_CELL_RENDERER (celltext), &xpad, NULL);
if (priv->extra_attrs)
attr_list = pango_attr_list_copy (priv->extra_attrs);
else
attr_list = pango_attr_list_new ();
pango_layout_set_single_paragraph_mode (layout, priv->single_paragraph);
if (!placeholder_layout && cell_area)
{
/* 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 (priv->foreground_set
&& (flags & GTK_CELL_RENDERER_SELECTED) == 0)
{
PangoColor color;
color.red = (guint16) (priv->foreground.red * 65535);
color.green = (guint16) (priv->foreground.green * 65535);
color.blue = (guint16) (priv->foreground.blue * 65535);
add_attr (attr_list,
pango_attr_foreground_new (color.red, color.green, color.blue));
}
if (priv->strikethrough_set)
add_attr (attr_list,
pango_attr_strikethrough_new (priv->strikethrough));
}
else if (placeholder_layout)
{
PangoColor color;
GtkStyleContext *context;
GdkRGBA fg = { 0.5, 0.5, 0.5 };
context = gtk_widget_get_style_context (widget);
gtk_style_context_lookup_color (context, "placeholder_text_color", &fg);
color.red = CLAMP (fg.red * 65535. + 0.5, 0, 65535);
color.green = CLAMP (fg.green * 65535. + 0.5, 0, 65535);
color.blue = CLAMP (fg.blue * 65535. + 0.5, 0, 65535);
add_attr (attr_list,
pango_attr_foreground_new (color.red, color.green, color.blue));
}
add_attr (attr_list, pango_attr_font_desc_new (priv->font));
if (priv->scale_set &&
priv->font_scale != 1.0)
add_attr (attr_list, pango_attr_scale_new (priv->font_scale));
if (priv->underline_set)
uline = priv->underline_style;
else
uline = PANGO_UNDERLINE_NONE;
if (priv->language_set)
add_attr (attr_list, pango_attr_language_new (priv->language));
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 (priv->underline_style));
if (priv->rise_set)
add_attr (attr_list, pango_attr_rise_new (priv->rise));
/* Now apply the attributes as they will effect the outcome
* of pango_layout_get_extents() */
pango_layout_set_attributes (layout, attr_list);
pango_attr_list_unref (attr_list);
if (priv->ellipsize_set)
pango_layout_set_ellipsize (layout, priv->ellipsize);
else
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_NONE);
if (priv->wrap_width != -1)
{
PangoRectangle rect;
gint width, text_width;
pango_layout_get_extents (layout, NULL, &rect);
text_width = rect.width;
if (cell_area)
width = (cell_area->width - xpad * 2) * PANGO_SCALE;
else
width = priv->wrap_width * PANGO_SCALE;
width = MIN (width, text_width);
pango_layout_set_width (layout, width);
pango_layout_set_wrap (layout, priv->wrap_mode);
}
else
{
pango_layout_set_width (layout, -1);
pango_layout_set_wrap (layout, PANGO_WRAP_CHAR);
}
if (priv->align_set)
pango_layout_set_alignment (layout, priv->align);
else
{
PangoAlignment align;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
align = PANGO_ALIGN_RIGHT;
else
align = PANGO_ALIGN_LEFT;
pango_layout_set_alignment (layout, align);
}
return layout;
}
static void
get_size (GtkCellRenderer *cell,
GtkWidget *widget,
const GdkRectangle *cell_area,
PangoLayout *layout,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GtkCellRendererTextPrivate *priv = celltext->priv;
PangoRectangle rect;
gint xpad, ypad;
gint cell_width, cell_height;
gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
if (priv->calc_fixed_height)
{
GtkStyleContext *style_context;
GtkStateFlags state;
PangoContext *context;
PangoFontMetrics *metrics;
PangoFontDescription *font_desc;
gint row_height;
style_context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get (style_context, state, "font", &font_desc, NULL);
pango_font_description_merge_static (font_desc, priv->font, TRUE);
if (priv->scale_set)
pango_font_description_set_size (font_desc,
priv->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);
pango_font_description_free (font_desc);
gtk_cell_renderer_get_fixed_size (cell, &cell_width, &cell_height);
gtk_cell_renderer_set_fixed_size (cell,
cell_width, 2 * ypad +
priv->fixed_height_rows * PANGO_PIXELS (row_height));
if (height)
{
*height = cell_height;
height = NULL;
}
priv->calc_fixed_height = FALSE;
if (width == NULL)
return;
}
if (layout)
g_object_ref (layout);
else
layout = get_layout (celltext, widget, NULL, 0);
pango_layout_get_pixel_extents (layout, NULL, &rect);
if (cell_area)
{
gfloat xalign, yalign;
gtk_cell_renderer_get_alignment (cell, &xalign, &yalign);
rect.height = MIN (rect.height, cell_area->height - 2 * ypad);
rect.width = MIN (rect.width, cell_area->width - 2 * xpad);
if (x_offset)
{
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
*x_offset = (1.0 - xalign) * (cell_area->width - (rect.width + (2 * xpad)));
else
*x_offset = xalign * (cell_area->width - (rect.width + (2 * xpad)));
if ((priv->ellipsize_set && priv->ellipsize != PANGO_ELLIPSIZE_NONE) || priv->wrap_width != -1)
*x_offset = MAX(*x_offset, 0);
}
if (y_offset)
{
*y_offset = yalign * (cell_area->height - (rect.height + (2 * ypad)));
*y_offset = MAX (*y_offset, 0);
}
}
else
{
if (x_offset) *x_offset = 0;
if (y_offset) *y_offset = 0;
}
if (height)
*height = ypad * 2 + rect.height;
if (width)
*width = xpad * 2 + rect.width;
g_object_unref (layout);
}
static void
gtk_cell_renderer_text_render (GtkCellRenderer *cell,
cairo_t *cr,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GtkCellRendererTextPrivate *priv = celltext->priv;
GtkStyleContext *context;
PangoLayout *layout;
gint x_offset = 0;
gint y_offset = 0;
gint xpad, ypad;
PangoRectangle rect;
layout = get_layout (celltext, widget, cell_area, flags);
get_size (cell, widget, cell_area, layout, &x_offset, &y_offset, NULL, NULL);
context = gtk_widget_get_style_context (widget);
if (priv->background_set && (flags & GTK_CELL_RENDERER_SELECTED) == 0)
{
gdk_cairo_rectangle (cr, background_area);
gdk_cairo_set_source_rgba (cr, &priv->background);
cairo_fill (cr);
}
gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
if (priv->ellipsize_set && priv->ellipsize != PANGO_ELLIPSIZE_NONE)
pango_layout_set_width (layout,
(cell_area->width - x_offset - 2 * xpad) * PANGO_SCALE);
else if (priv->wrap_width == -1)
pango_layout_set_width (layout, -1);
pango_layout_get_pixel_extents (layout, NULL, &rect);
x_offset = x_offset - rect.x;
cairo_save (cr);
gdk_cairo_rectangle (cr, cell_area);
cairo_clip (cr);
gtk_render_layout (context, cr,
cell_area->x + x_offset + xpad,
cell_area->y + y_offset + ypad,
layout);
cairo_restore (cr);
g_object_unref (layout);
}
static void
gtk_cell_renderer_text_editing_done (GtkCellEditable *entry,
gpointer data)
{
GtkCellRendererTextPrivate *priv;
const gchar *path;
const gchar *new_text;
gboolean canceled;
priv = GTK_CELL_RENDERER_TEXT (data)->priv;
g_clear_object (&priv->entry);
if (priv->focus_out_id > 0)
{
g_signal_handler_disconnect (entry, priv->focus_out_id);
priv->focus_out_id = 0;
}
if (priv->populate_popup_id > 0)
{
g_signal_handler_disconnect (entry, priv->populate_popup_id);
priv->populate_popup_id = 0;
}
if (priv->entry_menu_popdown_timeout)
{
g_source_remove (priv->entry_menu_popdown_timeout);
priv->entry_menu_popdown_timeout = 0;
}
g_object_get (entry,
"editing-canceled", &canceled,
NULL);
gtk_cell_renderer_stop_editing (GTK_CELL_RENDERER (data), canceled);
if (canceled)
return;
path = g_object_get_data (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH);
new_text = gtk_entry_get_text (GTK_ENTRY (entry));
g_signal_emit (data, text_cell_renderer_signals[EDITED], 0, path, new_text);
}
static gboolean
popdown_timeout (gpointer data)
{
GtkCellRendererTextPrivate *priv;
priv = GTK_CELL_RENDERER_TEXT (data)->priv;
priv->entry_menu_popdown_timeout = 0;
if (!gtk_widget_has_focus (priv->entry))
gtk_cell_renderer_text_editing_done (GTK_CELL_EDITABLE (priv->entry), data);
return FALSE;
}
static void
gtk_cell_renderer_text_popup_unmap (GtkMenu *menu,
gpointer data)
{
GtkCellRendererTextPrivate *priv;
priv = GTK_CELL_RENDERER_TEXT (data)->priv;
priv->in_entry_menu = FALSE;
if (priv->entry_menu_popdown_timeout)
return;
priv->entry_menu_popdown_timeout = gdk_threads_add_timeout (500, popdown_timeout,
data);
}
static void
gtk_cell_renderer_text_populate_popup (GtkEntry *entry,
GtkMenu *menu,
gpointer data)
{
GtkCellRendererTextPrivate *priv;
priv = GTK_CELL_RENDERER_TEXT (data)->priv;
if (priv->entry_menu_popdown_timeout)
{
g_source_remove (priv->entry_menu_popdown_timeout);
priv->entry_menu_popdown_timeout = 0;
}
priv->in_entry_menu = TRUE;
g_signal_connect (menu, "unmap",
G_CALLBACK (gtk_cell_renderer_text_popup_unmap), data);
}
static gboolean
gtk_cell_renderer_text_focus_out_event (GtkWidget *entry,
GdkEvent *event,
gpointer data)
{
GtkCellRendererTextPrivate *priv;
priv = GTK_CELL_RENDERER_TEXT (data)->priv;
if (priv->in_entry_menu)
return FALSE;
g_object_set (entry,
"editing-canceled", TRUE,
NULL);
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (entry));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (entry));
/* entry needs focus-out-event */
return FALSE;
}
static GtkCellEditable *
gtk_cell_renderer_text_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererText *celltext;
GtkCellRendererTextPrivate *priv;
gfloat xalign, yalign;
celltext = GTK_CELL_RENDERER_TEXT (cell);
priv = celltext->priv;
/* If the cell isn't editable we return NULL. */
if (priv->editable == FALSE)
return NULL;
gtk_cell_renderer_get_alignment (cell, &xalign, &yalign);
priv->entry = gtk_entry_new ();
g_object_ref_sink (G_OBJECT (priv->entry));
gtk_entry_set_has_frame (GTK_ENTRY (priv->entry), FALSE);
gtk_entry_set_alignment (GTK_ENTRY (priv->entry), xalign);
if (priv->text)
gtk_entry_set_text (GTK_ENTRY (priv->entry), priv->text);
g_object_set_data_full (G_OBJECT (priv->entry), I_(GTK_CELL_RENDERER_TEXT_PATH), g_strdup (path), g_free);
gtk_editable_select_region (GTK_EDITABLE (priv->entry), 0, -1);
priv->in_entry_menu = FALSE;
if (priv->entry_menu_popdown_timeout)
{
g_source_remove (priv->entry_menu_popdown_timeout);
priv->entry_menu_popdown_timeout = 0;
}
g_signal_connect (priv->entry,
"editing-done",
G_CALLBACK (gtk_cell_renderer_text_editing_done),
celltext);
priv->focus_out_id = g_signal_connect_after (priv->entry, "focus-out-event",
G_CALLBACK (gtk_cell_renderer_text_focus_out_event),
celltext);
priv->populate_popup_id =
g_signal_connect (priv->entry, "populate-popup",
G_CALLBACK (gtk_cell_renderer_text_populate_popup),
celltext);
gtk_widget_show (priv->entry);
return GTK_CELL_EDITABLE (priv->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)
{
GtkCellRendererTextPrivate *priv;
GtkCellRenderer *cell;
g_return_if_fail (GTK_IS_CELL_RENDERER_TEXT (renderer));
g_return_if_fail (number_of_rows == -1 || number_of_rows > 0);
cell = GTK_CELL_RENDERER (renderer);
priv = renderer->priv;
if (number_of_rows == -1)
{
gint width, height;
gtk_cell_renderer_get_fixed_size (cell, &width, &height);
gtk_cell_renderer_set_fixed_size (cell, width, -1);
}
else
{
priv->fixed_height_rows = number_of_rows;
priv->calc_fixed_height = TRUE;
}
}
static void
gtk_cell_renderer_text_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
GtkCellRendererTextPrivate *priv;
GtkCellRendererText *celltext;
PangoLayout *layout;
PangoContext *context;
PangoFontMetrics *metrics;
PangoRectangle rect;
gint char_width, text_width, ellipsize_chars, xpad;
gint min_width, nat_width;
/* "width-chars" Hard-coded minimum width:
* - minimum size should be MAX (width-chars, strlen ("..."));
* - natural size should be MAX (width-chars, strlen (label->text));
*
* "wrap-width" User specified natural wrap width
* - minimum size should be MAX (width-chars, 0)
* - natural size should be MIN (wrap-width, strlen (label->text))
*/
celltext = GTK_CELL_RENDERER_TEXT (cell);
priv = celltext->priv;
gtk_cell_renderer_get_padding (cell, &xpad, NULL);
layout = get_layout (celltext, widget, NULL, 0);
/* Fetch the length of the complete unwrapped text */
pango_layout_set_width (layout, -1);
pango_layout_get_extents (layout, NULL, &rect);
text_width = rect.width;
/* Fetch the average size of a charachter */
context = pango_layout_get_context (layout);
metrics = pango_context_get_metrics (context,
pango_context_get_font_description (context),
pango_context_get_language (context));
char_width = pango_font_metrics_get_approximate_char_width (metrics);
pango_font_metrics_unref (metrics);
g_object_unref (layout);
/* enforce minimum width for ellipsized labels at ~3 chars */
if (priv->ellipsize_set && priv->ellipsize != PANGO_ELLIPSIZE_NONE)
ellipsize_chars = 3;
else
ellipsize_chars = 0;
if ((priv->ellipsize_set && priv->ellipsize != PANGO_ELLIPSIZE_NONE) || priv->width_chars > 0)
min_width = xpad * 2 +
MIN (PANGO_PIXELS_CEIL (text_width),
(PANGO_PIXELS (char_width) * MAX (priv->width_chars, ellipsize_chars)));
/* If no width-chars set, minimum for wrapping text will be the wrap-width */
else if (priv->wrap_width > -1)
min_width = xpad * 2 + rect.x + MIN (PANGO_PIXELS_CEIL (text_width), priv->wrap_width);
else
min_width = xpad * 2 + rect.x + PANGO_PIXELS_CEIL (text_width);
if (priv->width_chars > 0)
nat_width = xpad * 2 +
MAX ((PANGO_PIXELS (char_width) * priv->width_chars), PANGO_PIXELS_CEIL (text_width));
else
nat_width = xpad * 2 + PANGO_PIXELS_CEIL (text_width);
nat_width = MAX (nat_width, min_width);
if (priv->max_width_chars > 0)
{
gint max_width = xpad * 2 + PANGO_PIXELS (char_width) * priv->max_width_chars;
min_width = MIN (min_width, max_width);
nat_width = MIN (nat_width, max_width);
}
if (minimum_size)
*minimum_size = min_width;
if (natural_size)
*natural_size = nat_width;
}
static void
gtk_cell_renderer_text_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height)
{
GtkCellRendererText *celltext;
PangoLayout *layout;
gint text_height, xpad, ypad;
celltext = GTK_CELL_RENDERER_TEXT (cell);
gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
layout = get_layout (celltext, widget, NULL, 0);
pango_layout_set_width (layout, (width - xpad * 2) * PANGO_SCALE);
pango_layout_get_pixel_size (layout, NULL, &text_height);
if (minimum_height)
*minimum_height = text_height + ypad * 2;
if (natural_height)
*natural_height = text_height + ypad * 2;
g_object_unref (layout);
}
static void
gtk_cell_renderer_text_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gint min_width;
/* Thankfully cell renderers dont rotate, so they only have to do
* height-for-width and not the opposite. Here we have only to return
* the height for the base minimum width of the renderer.
*
* Note this code path wont be followed by GtkTreeView which is
* height-for-width specifically.
*/
gtk_cell_renderer_get_preferred_width (cell, widget, &min_width, NULL);
gtk_cell_renderer_text_get_preferred_height_for_width (cell, widget, min_width,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_text_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
PangoLayout *layout;
gint x_offset = 0;
gint y_offset = 0;
layout = get_layout (celltext, widget, cell_area, flags);
get_size (cell, widget, cell_area, layout, &x_offset, &y_offset,
&aligned_area->width, &aligned_area->height);
aligned_area->x = cell_area->x + x_offset;
aligned_area->y = cell_area->y + y_offset;
g_object_unref (layout);
}
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