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gtk2/gtk/gtkcellrenderertext.c
Sophie Herold a546ae32d7 Remove all nicks and blurbs from param specs 
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.

Closes #4904
2022-05-11 18:16:29 +02:00

1937 lines
60 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 "gtkcssnumbervalueprivate.h"
#include "gtkeditable.h"
#include "gtkentry.h"
#include "gtkentryprivate.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtksizerequest.h"
#include "gtksnapshot.h"
#include "gtkstylecontextprivate.h"
#include "gtktreeprivate.h"
#include <stdlib.h>
/**
* GtkCellRendererText:
*
* Renders text in a cell
*
* 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_snapshot (GtkCellRenderer *cell,
GtkSnapshot *snapshot,
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 char *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
static void gtk_cell_renderer_text_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimal_size,
int *natural_size);
static void gtk_cell_renderer_text_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimal_size,
int *natural_size);
static void gtk_cell_renderer_text_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
int width,
int *minimum_height,
int *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_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,
LAST_PROP
};
static guint text_cell_renderer_signals [LAST_SIGNAL];
static GParamSpec *text_cell_renderer_props [LAST_PROP];
#define GTK_CELL_RENDERER_TEXT_PATH "gtk-cell-renderer-text-path"
typedef struct _GtkCellRendererTextPrivate GtkCellRendererTextPrivate;
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;
char *text;
char *placeholder_text;
double font_scale;
int rise;
int fixed_height_rows;
int width_chars;
int max_width_chars;
int 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 entry_menu_popdown_timeout;
};
G_DEFINE_TYPE_WITH_PRIVATE (GtkCellRendererText, gtk_cell_renderer_text, GTK_TYPE_CELL_RENDERER)
static void
gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
{
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
GtkCellRenderer *cell = GTK_CELL_RENDERER (celltext);
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->snapshot = gtk_cell_renderer_text_snapshot;
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;
text_cell_renderer_props[PROP_TEXT] =
g_param_spec_string ("text", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_MARKUP] =
g_param_spec_string ("markup", NULL, NULL,
NULL,
GTK_PARAM_WRITABLE);
text_cell_renderer_props[PROP_ATTRIBUTES] =
g_param_spec_boxed ("attributes", NULL, NULL,
PANGO_TYPE_ATTR_LIST,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_SINGLE_PARAGRAPH_MODE] =
g_param_spec_boolean ("single-paragraph-mode", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
text_cell_renderer_props[PROP_BACKGROUND] =
g_param_spec_string ("background", NULL, NULL,
NULL,
GTK_PARAM_WRITABLE);
/**
* GtkCellRendererText:background-rgba:
*
* Background color as a `GdkRGBA`
*/
text_cell_renderer_props[PROP_BACKGROUND_RGBA] =
g_param_spec_boxed ("background-rgba", NULL, NULL,
GDK_TYPE_RGBA,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_FOREGROUND] =
g_param_spec_string ("foreground", NULL, NULL,
NULL,
GTK_PARAM_WRITABLE);
/**
* GtkCellRendererText:foreground-rgba:
*
* Foreground color as a `GdkRGBA`
*/
text_cell_renderer_props[PROP_FOREGROUND_RGBA] =
g_param_spec_boxed ("foreground-rgba", NULL, NULL,
GDK_TYPE_RGBA,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_EDITABLE] =
g_param_spec_boolean ("editable", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_FONT] =
g_param_spec_string ("font", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_FONT_DESC] =
g_param_spec_boxed ("font-desc", NULL, NULL,
PANGO_TYPE_FONT_DESCRIPTION,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_FAMILY] =
g_param_spec_string ("family", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_STYLE] =
g_param_spec_enum ("style", NULL, NULL,
PANGO_TYPE_STYLE,
PANGO_STYLE_NORMAL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_VARIANT] =
g_param_spec_enum ("variant", NULL, NULL,
PANGO_TYPE_VARIANT,
PANGO_VARIANT_NORMAL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_WEIGHT] =
g_param_spec_int ("weight", NULL, NULL,
0, G_MAXINT,
PANGO_WEIGHT_NORMAL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_STRETCH] =
g_param_spec_enum ("stretch", NULL, NULL,
PANGO_TYPE_STRETCH,
PANGO_STRETCH_NORMAL,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_SIZE] =
g_param_spec_int ("size", NULL, NULL,
0, G_MAXINT,
0,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_SIZE_POINTS] =
g_param_spec_double ("size-points", NULL, NULL,
0.0, G_MAXDOUBLE,
0.0,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_SCALE] =
g_param_spec_double ("scale", NULL, NULL,
0.0, G_MAXDOUBLE,
1.0,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_RISE] =
g_param_spec_int ("rise", NULL, NULL,
-G_MAXINT, G_MAXINT,
0,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_STRIKETHROUGH] =
g_param_spec_boolean ("strikethrough", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_UNDERLINE] =
g_param_spec_enum ("underline", NULL, NULL,
PANGO_TYPE_UNDERLINE,
PANGO_UNDERLINE_NONE,
GTK_PARAM_READWRITE);
text_cell_renderer_props[PROP_LANGUAGE] =
g_param_spec_string ("language", NULL, NULL,
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.
*/
text_cell_renderer_props[PROP_ELLIPSIZE] =
g_param_spec_enum ("ellipsize", NULL, NULL,
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* 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.
**/
text_cell_renderer_props[PROP_WIDTH_CHARS] =
g_param_spec_int ("width-chars", NULL, NULL,
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* 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.
**/
text_cell_renderer_props[PROP_MAX_WIDTH_CHARS] =
g_param_spec_int ("max-width-chars", NULL, NULL,
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* 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.
*/
text_cell_renderer_props[PROP_WRAP_MODE] =
g_param_spec_enum ("wrap-mode", NULL, NULL,
PANGO_TYPE_WRAP_MODE,
PANGO_WRAP_CHAR,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* 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.
*/
text_cell_renderer_props[PROP_WRAP_WIDTH] =
g_param_spec_int ("wrap-width", NULL, NULL,
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* 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.
*/
text_cell_renderer_props[PROP_ALIGN] =
g_param_spec_enum ("alignment", NULL, NULL,
PANGO_TYPE_ALIGNMENT,
PANGO_ALIGN_LEFT,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkCellRendererText:placeholder-text:
*
* The text that will be displayed in the `GtkCellRenderer` if
* `GtkCellRendererText:editable` is %TRUE and the cell is empty.
*/
text_cell_renderer_props[PROP_PLACEHOLDER_TEXT] =
g_param_spec_string ("placeholder-text", NULL, NULL,
NULL,
GTK_PARAM_READWRITE);
/* Style props are set or not */
#define ADD_SET_PROP(propname, propval, nick, blurb) text_cell_renderer_props[propval] = g_param_spec_boolean (propname, nick, blurb, FALSE, GTK_PARAM_READWRITE)
ADD_SET_PROP ("background-set", PROP_BACKGROUND_SET, NULL, NULL);
ADD_SET_PROP ("foreground-set", PROP_FOREGROUND_SET, NULL, NULL);
ADD_SET_PROP ("editable-set", PROP_EDITABLE_SET, NULL, NULL);
ADD_SET_PROP ("family-set", PROP_FAMILY_SET, NULL, NULL);
ADD_SET_PROP ("style-set", PROP_STYLE_SET, NULL, NULL);
ADD_SET_PROP ("variant-set", PROP_VARIANT_SET, NULL, NULL);
ADD_SET_PROP ("weight-set", PROP_WEIGHT_SET, NULL, NULL);
ADD_SET_PROP ("stretch-set", PROP_STRETCH_SET, NULL, NULL);
ADD_SET_PROP ("size-set", PROP_SIZE_SET, NULL, NULL);
ADD_SET_PROP ("scale-set", PROP_SCALE_SET, NULL, NULL);
ADD_SET_PROP ("rise-set", PROP_RISE_SET, NULL, NULL);
ADD_SET_PROP ("strikethrough-set", PROP_STRIKETHROUGH_SET, NULL, NULL);
ADD_SET_PROP ("underline-set", PROP_UNDERLINE_SET, NULL, NULL);
ADD_SET_PROP ("language-set", PROP_LANGUAGE_SET, NULL, NULL);
ADD_SET_PROP ("ellipsize-set", PROP_ELLIPSIZE_SET, NULL, NULL);
ADD_SET_PROP ("align-set", PROP_ALIGN_SET, NULL, NULL);
g_object_class_install_properties (object_class, LAST_PROP, text_cell_renderer_props);
/**
* 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_signal_set_va_marshaller (text_cell_renderer_signals [EDITED],
G_OBJECT_CLASS_TYPE (object_class),
_gtk_marshal_VOID__STRING_STRINGv);
}
static void
gtk_cell_renderer_text_finalize (GObject *object)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
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;
default:
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 = gtk_cell_renderer_text_get_instance_private (celltext);
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_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 = gtk_cell_renderer_text_get_instance_private (celltext);
if (rgba)
{
if (!priv->background_set)
{
priv->background_set = TRUE;
g_object_notify_by_pspec (G_OBJECT (celltext), text_cell_renderer_props[PROP_BACKGROUND_SET]);
}
priv->background = *rgba;
}
else
{
if (priv->background_set)
{
priv->background_set = FALSE;
g_object_notify_by_pspec (G_OBJECT (celltext), text_cell_renderer_props[PROP_BACKGROUND_SET]);
}
}
}
static void
set_fg_color (GtkCellRendererText *celltext,
GdkRGBA *rgba)
{
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
if (rgba)
{
if (!priv->foreground_set)
{
priv->foreground_set = TRUE;
g_object_notify_by_pspec (G_OBJECT (celltext), text_cell_renderer_props[PROP_FOREGROUND_SET]);
}
priv->foreground = *rgba;
}
else
{
if (priv->foreground_set)
{
priv->foreground_set = FALSE;
g_object_notify_by_pspec (G_OBJECT (celltext), text_cell_renderer_props[PROP_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)
{
int 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_by_pspec (object, text_cell_renderer_props[PROP_FAMILY_SET]);
if (changed_mask & PANGO_FONT_MASK_STYLE)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_STYLE_SET]);
if (changed_mask & PANGO_FONT_MASK_VARIANT)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_VARIANT_SET]);
if (changed_mask & PANGO_FONT_MASK_WEIGHT)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_WEIGHT_SET]);
if (changed_mask & PANGO_FONT_MASK_STRETCH)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_STRETCH_SET]);
if (changed_mask & PANGO_FONT_MASK_SIZE)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_SIZE_SET]);
}
static void
notify_fields_changed (GObject *object,
PangoFontMask changed_mask)
{
if (changed_mask & PANGO_FONT_MASK_FAMILY)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_FAMILY]);
if (changed_mask & PANGO_FONT_MASK_STYLE)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_STYLE]);
if (changed_mask & PANGO_FONT_MASK_VARIANT)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_VARIANT]);
if (changed_mask & PANGO_FONT_MASK_WEIGHT)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_WEIGHT]);
if (changed_mask & PANGO_FONT_MASK_STRETCH)
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_STRETCH]);
if (changed_mask & PANGO_FONT_MASK_SIZE)
{
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_SIZE]);
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_SIZE_POINTS]);
}
}
static void
set_font_description (GtkCellRendererText *celltext,
PangoFontDescription *font_desc)
{
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
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_by_pspec (object, text_cell_renderer_props[PROP_FONT_DESC]);
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_FONT]);
notify_fields_changed (object, changed_mask);
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 = gtk_cell_renderer_text_get_instance_private (celltext);
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_by_pspec (object, pspec);
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 char *str;
char *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:
if (priv->single_paragraph != g_value_get_boolean (value))
{
priv->single_paragraph = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
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));
}
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));
}
break;
case PROP_BACKGROUND_RGBA:
set_bg_color (celltext, g_value_get_boxed (value));
break;
case PROP_FOREGROUND_RGBA:
set_fg_color (celltext, g_value_get_boxed (value));
break;
case PROP_FONT:
{
PangoFontDescription *font_desc = NULL;
const char *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_by_pspec (object, pspec);
break;
case PROP_SIZE_POINTS:
pango_font_description_set_size (priv->font,
g_value_get_double (value) * PANGO_SCALE);
g_object_notify_by_pspec (object, pspec);
break;
default:
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_by_pspec (object, text_cell_renderer_props[PROP_FONT_DESC]);
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_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_by_pspec (object, text_cell_renderer_props[PROP_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_by_pspec (object, text_cell_renderer_props[PROP_EDITABLE_SET]);
break;
case PROP_STRIKETHROUGH:
priv->strikethrough = g_value_get_boolean (value);
priv->strikethrough_set = TRUE;
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_STRIKETHROUGH_SET]);
break;
case PROP_UNDERLINE:
priv->underline_style = g_value_get_enum (value);
priv->underline_set = TRUE;
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_UNDERLINE_SET]);
break;
case PROP_RISE:
priv->rise = g_value_get_int (value);
priv->rise_set = TRUE;
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_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_by_pspec (object, text_cell_renderer_props[PROP_LANGUAGE_SET]);
break;
case PROP_ELLIPSIZE:
priv->ellipsize = g_value_get_enum (value);
priv->ellipsize_set = TRUE;
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_ELLIPSIZE_SET]);
break;
case PROP_WRAP_MODE:
if (priv->wrap_mode != g_value_get_enum (value))
{
priv->wrap_mode = g_value_get_enum (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_WRAP_WIDTH:
if (priv->wrap_width != g_value_get_int (value))
{
priv->wrap_width = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_WIDTH_CHARS:
if (priv->width_chars != g_value_get_int (value))
{
priv->width_chars = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_MAX_WIDTH_CHARS:
if (priv->max_width_chars != g_value_get_int (value))
{
priv->max_width_chars = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_ALIGN:
if (priv->align != g_value_get_enum (value))
{
priv->align = g_value_get_enum (value);
g_object_notify_by_pspec (object, pspec);
}
priv->align_set = TRUE;
g_object_notify_by_pspec (object, text_cell_renderer_props[PROP_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`.
*
* Returns: 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 = gtk_cell_renderer_text_get_instance_private (celltext);
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 = gtk_cell_renderer_text_get_instance_private (celltext);
PangoAttrList *attr_list;
PangoLayout *layout;
PangoUnderline uline;
int 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;
guint16 alpha;
color.red = CLAMP (priv->foreground.red * 65535. + 0.5, 0, 65535);
color.green = CLAMP (priv->foreground.green * 65535. + 0.5, 0, 65535);
color.blue = CLAMP (priv->foreground.blue * 65535. + 0.5, 0, 65535);
alpha = CLAMP (priv->foreground.alpha * 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_foreground_alpha_new (alpha));
}
if (priv->strikethrough_set)
add_attr (attr_list, pango_attr_strikethrough_new (priv->strikethrough));
}
else if (placeholder_layout)
{
PangoColor color;
guint16 alpha;
GtkStyleContext *context;
GdkRGBA fg = { 0.5, 0.5, 0.5, 1.0 };
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);
alpha = CLAMP (fg.alpha * 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_foreground_alpha_new (alpha));
}
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;
case PANGO_UNDERLINE_SINGLE_LINE:
uline = PANGO_UNDERLINE_DOUBLE_LINE;
break;
case PANGO_UNDERLINE_DOUBLE_LINE:
case PANGO_UNDERLINE_ERROR_LINE:
break;
case PANGO_UNDERLINE_DOUBLE:
case PANGO_UNDERLINE_LOW:
case PANGO_UNDERLINE_ERROR:
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;
int 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,
int *x_offset,
int *y_offset,
int *width,
int *height)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
PangoRectangle rect;
int xpad, ypad;
int cell_width, cell_height;
float xalign, yalign;
gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
if (priv->calc_fixed_height)
{
GtkStyleContext *style_context;
PangoContext *context;
PangoFontMetrics *metrics;
PangoFontDescription *font_desc;
int row_height;
style_context = gtk_widget_get_style_context (widget);
font_desc = gtk_css_style_get_pango_font (gtk_style_context_lookup_style (style_context));
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;
}
pango_layout_get_pixel_extents (layout, NULL, &rect);
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 (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);
*y_offset = yalign * (cell_area->height - (rect.height + (2 * ypad)));
*y_offset = MAX (*y_offset, 0);
if (height)
*height = ypad * 2 + rect.height;
if (width)
*width = xpad * 2 + rect.width;
}
static void
gtk_cell_renderer_text_snapshot (GtkCellRenderer *cell,
GtkSnapshot *snapshot,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
GtkStyleContext *context;
PangoLayout *layout;
int x_offset = 0;
int y_offset = 0;
int 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)
{
gtk_snapshot_append_color (snapshot,
&priv->background,
&GRAPHENE_RECT_INIT(
background_area->x, background_area->y,
background_area->width, background_area->height
));
}
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;
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT(
cell_area->x, cell_area->y,
cell_area->width, cell_area->height
));
gtk_snapshot_render_layout (snapshot, context,
cell_area->x + x_offset + xpad,
cell_area->y + y_offset + ypad,
layout);
gtk_snapshot_pop (snapshot);
g_object_unref (layout);
}
static void
gtk_cell_renderer_text_editing_done (GtkCellEditable *entry,
gpointer data)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (data);
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
const char *path;
const char *new_text;
gboolean canceled;
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->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_editable_get_text (GTK_EDITABLE (entry));
g_signal_emit (data, text_cell_renderer_signals[EDITED], 0, path, new_text);
}
static void
gtk_cell_renderer_text_focus_changed (GtkWidget *entry,
GParamSpec *pspec,
gpointer data)
{
if (gtk_widget_has_focus (entry) ||
gtk_widget_has_focus (GTK_WIDGET (gtk_entry_get_text_widget (GTK_ENTRY (entry)))))
return;
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));
}
static GtkCellEditable *
gtk_cell_renderer_text_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const char *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
float xalign, yalign;
/* If the cell isn't editable we return NULL. */
if (!priv->editable)
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);
gtk_editable_set_width_chars (GTK_EDITABLE (priv->entry), 5);
if (priv->text)
gtk_editable_set_text (GTK_EDITABLE (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, "notify::has-focus",
G_CALLBACK (gtk_cell_renderer_text_focus_changed),
celltext);
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 inflexible, 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,
int number_of_rows)
{
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (renderer);
GtkCellRenderer *cell = GTK_CELL_RENDERER (renderer);
g_return_if_fail (GTK_IS_CELL_RENDERER_TEXT (renderer));
g_return_if_fail (number_of_rows == -1 || number_of_rows > 0);
if (number_of_rows == -1)
{
int 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,
int *minimum_size,
int *natural_size)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GtkCellRendererTextPrivate *priv = gtk_cell_renderer_text_get_instance_private (celltext);
PangoLayout *layout;
PangoContext *context;
PangoFontMetrics *metrics;
PangoRectangle rect;
int char_width, text_width, ellipsize_chars, xpad;
int 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))
*/
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 character */
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)
{
int 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,
int width,
int *minimum_height,
int *natural_height)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
PangoLayout *layout;
int text_height, xpad, ypad;
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,
int *minimum_size,
int *natural_size)
{
int 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 won't 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;
int x_offset = 0;
int 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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