AuroraMiddleware/gtk
1
0
Fork 1
mirror of https://gitlab.gnome.org/GNOME/gtk.git synced 2024-12-29 06:51:10 +00:00
Code Issues Projects Releases Wiki Activity
9e7e65ca6e
gtk/gtk/gtkcellrenderertext.c
Carlos Garcia Campos a18f018d87 cellrenderertext: Add placeholder-text property 
It works similar to placeholder text in a GtkEntry, if the cell renderer
is editable and it's empty, the placeholder text is displayed.
https://bugzilla.gnome.org/show_bug.cgi?id=645514
2012-05-03 23:35:34 -04:00

2284 lines
73 KiB
C
Raw Blame History

/* 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_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);
font_desc = pango_font_description_copy_static (gtk_style_context_get_font (style_context, state));
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;
priv->entry = NULL;
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 ();
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;
GtkStyleContext *style_context;
const PangoFontDescription *font_desc;
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;
style_context = gtk_widget_get_style_context (widget);
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);
font_desc = gtk_style_context_get_font (style_context, 0);
metrics = pango_context_get_metrics (context, font_desc,
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);
}
Reference in New Issue View Git Blame Copy Permalink