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gtk2/gtk/deprecated/gtkstyleproperties.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkstylepropertiesprivate.h"
#include <stdlib.h>
#include <gobject/gvaluecollector.h>
#include <cairo-gobject.h>
#include "gtkstyleprovider.h"
#include "gtkcssshorthandpropertyprivate.h"
#include "gtkcsstypedvalueprivate.h"
#include "gtkcsstypesprivate.h"
#include "gtkborderimageprivate.h"
#include "gtkprivatetypebuiltins.h"
#include "gtkstylepropertyprivate.h"
#include "gtkstyleproviderprivate.h"
#include "gtkintl.h"
#include "gtkwin32themeprivate.h"
#include "deprecated/gtkthemingengine.h"
#include "deprecated/gtkgradient.h"
#include "deprecated/gtksymboliccolorprivate.h"
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
/**
* SECTION:gtkstyleproperties
* @Short_description: Store for style property information
* @Title: GtkStyleProperties
*
* GtkStyleProperties provides the storage for style information
* that is used by #GtkStyleContext and other #GtkStyleProvider
* implementations.
*
* Before style properties can be stored in GtkStyleProperties, they
* must be registered with gtk_style_properties_register_property().
*
* Unless you are writing a #GtkStyleProvider implementation, you
* are unlikely to use this API directly, as gtk_style_context_get()
* and its variants are the preferred way to access styling information
* from widget implementations and theming engine implementations
* should use the APIs provided by #GtkThemingEngine instead.
*
* #GtkStyleProperties has been deprecated in GTK 3.16. The CSS
* machinery does not use it anymore and all users of this object
* have been deprecated.
*/
typedef struct PropertyData PropertyData;
typedef struct ValueData ValueData;
struct ValueData
{
GtkStateFlags state;
GtkCssValue *value;
};
struct PropertyData
{
GArray *values;
};
struct _GtkStylePropertiesPrivate
{
GHashTable *color_map;
GHashTable *properties;
};
static void gtk_style_properties_provider_init (GtkStyleProviderIface *iface);
static void gtk_style_properties_provider_private_init (GtkStyleProviderPrivateInterface *iface);
static void gtk_style_properties_finalize (GObject *object);
G_DEFINE_TYPE_WITH_CODE (GtkStyleProperties, gtk_style_properties, G_TYPE_OBJECT,
G_ADD_PRIVATE (GtkStyleProperties)
G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER,
gtk_style_properties_provider_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER_PRIVATE,
gtk_style_properties_provider_private_init));
static void
gtk_style_properties_class_init (GtkStylePropertiesClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_style_properties_finalize;
}
static PropertyData *
property_data_new (void)
{
PropertyData *data;
data = g_slice_new0 (PropertyData);
data->values = g_array_new (FALSE, FALSE, sizeof (ValueData));
return data;
}
static void
property_data_remove_values (PropertyData *data)
{
guint i;
for (i = 0; i < data->values->len; i++)
{
ValueData *value_data;
value_data = &g_array_index (data->values, ValueData, i);
_gtk_css_value_unref (value_data->value);
value_data->value = NULL;
}
if (data->values->len > 0)
g_array_remove_range (data->values, 0, data->values->len);
}
static void
property_data_free (PropertyData *data)
{
property_data_remove_values (data);
g_array_free (data->values, TRUE);
g_slice_free (PropertyData, data);
}
static gboolean
property_data_find_position (PropertyData *data,
GtkStateFlags state,
guint *pos)
{
gint min, max, mid;
gboolean found = FALSE;
guint position;
if (pos)
*pos = 0;
if (data->values->len == 0)
return FALSE;
/* Find position for the given state, or the position where
* it would be if not found, the array is ordered by the
* state flags.
*/
min = 0;
max = data->values->len - 1;
do
{
ValueData *value_data;
mid = (min + max) / 2;
value_data = &g_array_index (data->values, ValueData, mid);
if (value_data->state == state)
{
found = TRUE;
position = mid;
}
else if (value_data->state < state)
position = min = mid + 1;
else
{
max = mid - 1;
position = mid;
}
}
while (!found && min <= max);
if (pos)
*pos = position;
return found;
}
static ValueData *
property_data_get_value (PropertyData *data,
GtkStateFlags state)
{
guint pos;
if (!property_data_find_position (data, state, &pos))
{
ValueData new = { 0 };
new.state = state;
g_array_insert_val (data->values, pos, new);
}
return &g_array_index (data->values, ValueData, pos);
}
static GtkCssValue *
property_data_match_state (PropertyData *data,
GtkStateFlags state)
{
guint pos;
gint i;
if (property_data_find_position (data, state, &pos))
{
ValueData *val_data;
/* Exact match */
val_data = &g_array_index (data->values, ValueData, pos);
return val_data->value;
}
if (pos >= data->values->len)
pos = data->values->len - 1;
/* No exact match, go downwards the list to find
* the closest match to the given state flags, as
* a side effect, there is an implicit precedence
* of higher flags over the smaller ones.
*/
for (i = pos; i >= 0; i--)
{
ValueData *val_data;
val_data = &g_array_index (data->values, ValueData, i);
/* Check whether any of the requested
* flags are set, and no other flags are.
*
* Also, no flags acts as a wildcard, such
* value should be always in the first position
* in the array (if present) anyways.
*/
if (val_data->state == 0 ||
((val_data->state & state) != 0 &&
(val_data->state & ~state) == 0))
return val_data->value;
}
return NULL;
}
static void
gtk_style_properties_init (GtkStyleProperties *props)
{
props->priv = gtk_style_properties_get_instance_private (props);
props->priv->properties = g_hash_table_new_full (NULL, NULL, NULL,
(GDestroyNotify) property_data_free);
}
static void
gtk_style_properties_finalize (GObject *object)
{
GtkStylePropertiesPrivate *priv;
GtkStyleProperties *props;
props = GTK_STYLE_PROPERTIES (object);
priv = props->priv;
g_hash_table_destroy (priv->properties);
if (priv->color_map)
g_hash_table_destroy (priv->color_map);
G_OBJECT_CLASS (gtk_style_properties_parent_class)->finalize (object);
}
static void
gtk_style_properties_provider_init (GtkStyleProviderIface *iface)
{
}
static GtkCssValue *
gtk_style_properties_provider_get_color (GtkStyleProviderPrivate *provider,
const char *name)
{
GtkSymbolicColor *symbolic;
symbolic = gtk_style_properties_lookup_color (GTK_STYLE_PROPERTIES (provider), name);
if (symbolic == NULL)
return NULL;
return _gtk_symbolic_color_get_css_value (symbolic);
}
static void
gtk_style_properties_provider_lookup (GtkStyleProviderPrivate *provider,
const GtkCssMatcher *matcher,
GtkCssLookup *lookup,
GtkCssChange *change)
{
GtkStyleProperties *props;
GtkStylePropertiesPrivate *priv;
GHashTableIter iter;
gpointer key, value;
props = GTK_STYLE_PROPERTIES (provider);
priv = props->priv;
/* Merge symbolic style properties */
g_hash_table_iter_init (&iter, priv->properties);
while (g_hash_table_iter_next (&iter, &key, &value))
{
GtkCssStyleProperty *prop = key;
PropertyData *data = value;
GtkCssValue *value;
guint id;
id = _gtk_css_style_property_get_id (prop);
if (!_gtk_css_lookup_is_missing (lookup, id))
continue;
value = property_data_match_state (data, _gtk_css_matcher_get_state (matcher));
if (value == NULL)
continue;
_gtk_css_lookup_set (lookup, id, NULL, value);
}
if (change)
*change = GTK_CSS_CHANGE_STATE;
}
static void
gtk_style_properties_provider_private_init (GtkStyleProviderPrivateInterface *iface)
{
iface->get_color = gtk_style_properties_provider_get_color;
iface->lookup = gtk_style_properties_provider_lookup;
}
/* GtkStyleProperties methods */
/**
* gtk_style_properties_new:
*
* Returns a newly created #GtkStyleProperties
*
* Returns: a new #GtkStyleProperties
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
GtkStyleProperties *
gtk_style_properties_new (void)
{
return g_object_new (GTK_TYPE_STYLE_PROPERTIES, NULL);
}
/**
* gtk_style_properties_map_color:
* @props: a #GtkStyleProperties
* @name: color name
* @color: #GtkSymbolicColor to map @name to
*
* Maps @color so it can be referenced by @name. See
* gtk_style_properties_lookup_color()
*
* Since: 3.0
*
* Deprecated: 3.8: #GtkSymbolicColor is deprecated.
**/
void
gtk_style_properties_map_color (GtkStyleProperties *props,
const gchar *name,
GtkSymbolicColor *color)
{
GtkStylePropertiesPrivate *priv;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
g_return_if_fail (name != NULL);
g_return_if_fail (color != NULL);
priv = props->priv;
if (G_UNLIKELY (!priv->color_map))
priv->color_map = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) gtk_symbolic_color_unref);
g_hash_table_replace (priv->color_map,
g_strdup (name),
gtk_symbolic_color_ref (color));
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (props));
}
/**
* gtk_style_properties_lookup_color:
* @props: a #GtkStyleProperties
* @name: color name to lookup
*
* Returns the symbolic color that is mapped
* to @name.
*
* Returns: (transfer none): The mapped color
*
* Since: 3.0
*
* Deprecated: 3.8: #GtkSymbolicColor is deprecated.
**/
GtkSymbolicColor *
gtk_style_properties_lookup_color (GtkStyleProperties *props,
const gchar *name)
{
GtkStylePropertiesPrivate *priv;
g_return_val_if_fail (GTK_IS_STYLE_PROPERTIES (props), NULL);
g_return_val_if_fail (name != NULL, NULL);
priv = props->priv;
if (!priv->color_map)
return NULL;
return g_hash_table_lookup (priv->color_map, name);
}
void
_gtk_style_properties_set_property_by_property (GtkStyleProperties *props,
GtkCssStyleProperty *style_prop,
GtkStateFlags state,
GtkCssValue *value)
{
GtkStylePropertiesPrivate *priv;
PropertyData *prop;
ValueData *val;
priv = props->priv;
prop = g_hash_table_lookup (priv->properties, style_prop);
if (!prop)
{
prop = property_data_new ();
g_hash_table_insert (priv->properties, (gpointer) style_prop, prop);
}
val = property_data_get_value (prop, state);
_gtk_css_value_unref (val->value);
val->value = _gtk_css_value_ref (value);
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (props));
}
/**
* gtk_style_properties_set_property:
* @props: a #GtkStyleProperties
* @property: styling property to set
* @state: state to set the value for
* @value: new value for the property
*
* Sets a styling property in @props.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_set_property (GtkStyleProperties *props,
const gchar *property,
GtkStateFlags state,
const GValue *value)
{
GtkStyleProperty *node;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
g_return_if_fail (property != NULL);
g_return_if_fail (value != NULL);
node = _gtk_style_property_lookup (property);
if (!node)
{
g_warning ("Style property \"%s\" is not registered", property);
return;
}
if (_gtk_style_property_get_value_type (node) == G_TYPE_NONE)
{
g_warning ("Style property \"%s\" is not settable", property);
return;
}
_gtk_style_property_assign (node, props, state, value);
}
/**
* gtk_style_properties_set_valist:
* @props: a #GtkStyleProperties
* @state: state to set the values for
* @args: va_list of property name/value pairs, followed by %NULL
*
* Sets several style properties on @props.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_set_valist (GtkStyleProperties *props,
GtkStateFlags state,
va_list args)
{
const gchar *property_name;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
property_name = va_arg (args, const gchar *);
while (property_name)
{
GtkStyleProperty *node;
gchar *error = NULL;
GType val_type;
GValue val = G_VALUE_INIT;
node = _gtk_style_property_lookup (property_name);
if (!node)
{
g_warning ("Style property \"%s\" is not registered", property_name);
break;
}
val_type = _gtk_style_property_get_value_type (node);
if (val_type == G_TYPE_NONE)
{
g_warning ("Style property \"%s\" is not settable", property_name);
break;
}
G_VALUE_COLLECT_INIT (&val, _gtk_style_property_get_value_type (node),
args, 0, &error);
if (error)
{
g_warning ("Could not set style property \"%s\": %s", property_name, error);
g_value_unset (&val);
g_free (error);
break;
}
_gtk_style_property_assign (node, props, state, &val);
g_value_unset (&val);
property_name = va_arg (args, const gchar *);
}
}
/**
* gtk_style_properties_set:
* @props: a #GtkStyleProperties
* @state: state to set the values for
* @...: property name/value pairs, followed by %NULL
*
* Sets several style properties on @props.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_set (GtkStyleProperties *props,
GtkStateFlags state,
...)
{
va_list args;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
va_start (args, state);
gtk_style_properties_set_valist (props, state, args);
va_end (args);
}
typedef struct {
GtkStyleProperties *props;
GtkStateFlags state;
} StyleQueryData;
static GtkCssValue *
style_query_func (guint id,
gpointer data)
{
StyleQueryData *query = data;
PropertyData *prop;
prop = g_hash_table_lookup (query->props->priv->properties,
_gtk_css_style_property_lookup_by_id (id));
if (prop == NULL)
return NULL;
return property_data_match_state (prop, query->state);
}
/**
* gtk_style_properties_get_property:
* @props: a #GtkStyleProperties
* @property: style property name
* @state: state to retrieve the property value for
* @value: (out) (transfer full): return location for the style property value.
*
* Gets a style property from @props for the given state. When done with @value,
* g_value_unset() needs to be called to free any allocated memory.
*
* Returns: %TRUE if the property exists in @props, %FALSE otherwise
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
gboolean
gtk_style_properties_get_property (GtkStyleProperties *props,
const gchar *property,
GtkStateFlags state,
GValue *value)
{
StyleQueryData query = { props, state };
GtkStyleProperty *node;
g_return_val_if_fail (GTK_IS_STYLE_PROPERTIES (props), FALSE);
g_return_val_if_fail (property != NULL, FALSE);
g_return_val_if_fail (value != NULL, FALSE);
node = _gtk_style_property_lookup (property);
if (!node)
{
g_warning ("Style property \"%s\" is not registered", property);
return FALSE;
}
if (_gtk_style_property_get_value_type (node) == G_TYPE_NONE)
{
g_warning ("Style property \"%s\" is not gettable", property);
return FALSE;
}
_gtk_style_property_query (node,
value,
style_query_func,
&query);
return TRUE;
}
/**
* gtk_style_properties_get_valist:
* @props: a #GtkStyleProperties
* @state: state to retrieve the property values for
* @args: va_list of property name/return location pairs, followed by %NULL
*
* Retrieves several style property values from @props for a given state.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_get_valist (GtkStyleProperties *props,
GtkStateFlags state,
va_list args)
{
const gchar *property_name;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
property_name = va_arg (args, const gchar *);
while (property_name)
{
gchar *error = NULL;
GValue value = G_VALUE_INIT;
if (!gtk_style_properties_get_property (props,
property_name,
state,
&value))
break;
G_VALUE_LCOPY (&value, args, 0, &error);
g_value_unset (&value);
if (error)
{
g_warning ("Could not get style property \"%s\": %s", property_name, error);
g_free (error);
break;
}
property_name = va_arg (args, const gchar *);
}
}
/**
* gtk_style_properties_get:
* @props: a #GtkStyleProperties
* @state: state to retrieve the property values for
* @...: property name /return value pairs, followed by %NULL
*
* Retrieves several style property values from @props for a
* given state.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_get (GtkStyleProperties *props,
GtkStateFlags state,
...)
{
va_list args;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
va_start (args, state);
gtk_style_properties_get_valist (props, state, args);
va_end (args);
}
/**
* gtk_style_properties_unset_property:
* @props: a #GtkStyleProperties
* @property: property to unset
* @state: state to unset
*
* Unsets a style property in @props.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_unset_property (GtkStyleProperties *props,
const gchar *property,
GtkStateFlags state)
{
GtkStylePropertiesPrivate *priv;
GtkStyleProperty *node;
PropertyData *prop;
guint pos;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
g_return_if_fail (property != NULL);
node = _gtk_style_property_lookup (property);
if (!node)
{
g_warning ("Style property \"%s\" is not registered", property);
return;
}
if (_gtk_style_property_get_value_type (node) == G_TYPE_NONE)
{
g_warning ("Style property \"%s\" is not settable", property);
return;
}
if (GTK_IS_CSS_SHORTHAND_PROPERTY (node))
{
GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (node);
for (pos = 0; pos < _gtk_css_shorthand_property_get_n_subproperties (shorthand); pos++)
{
GtkCssStyleProperty *sub = _gtk_css_shorthand_property_get_subproperty (shorthand, pos);
gtk_style_properties_unset_property (props,
_gtk_style_property_get_name (GTK_STYLE_PROPERTY (sub)),
state);
}
return;
}
priv = props->priv;
prop = g_hash_table_lookup (priv->properties, node);
if (!prop)
return;
if (property_data_find_position (prop, state, &pos))
{
ValueData *data;
data = &g_array_index (prop->values, ValueData, pos);
_gtk_css_value_unref (data->value);
data->value = NULL;
g_array_remove_index (prop->values, pos);
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (props));
}
}
/**
* gtk_style_properties_clear:
* @props: a #GtkStyleProperties
*
* Clears all style information from @props.
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_clear (GtkStyleProperties *props)
{
GtkStylePropertiesPrivate *priv;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
priv = props->priv;
g_hash_table_remove_all (priv->properties);
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (props));
}
/**
* gtk_style_properties_merge:
* @props: a #GtkStyleProperties
* @props_to_merge: a second #GtkStyleProperties
* @replace: whether to replace values or not
*
* Merges into @props all the style information contained
* in @props_to_merge. If @replace is %TRUE, the values
* will be overwritten, if it is %FALSE, the older values
* will prevail.
*
* Since: 3.0
*
* Deprecated: 3.16: #GtkStyleProperties are deprecated.
**/
void
gtk_style_properties_merge (GtkStyleProperties *props,
const GtkStyleProperties *props_to_merge,
gboolean replace)
{
GtkStylePropertiesPrivate *priv, *priv_to_merge;
GHashTableIter iter;
gpointer key, value;
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props));
g_return_if_fail (GTK_IS_STYLE_PROPERTIES (props_to_merge));
priv = props->priv;
priv_to_merge = props_to_merge->priv;
/* Merge symbolic color map */
if (priv_to_merge->color_map)
{
g_hash_table_iter_init (&iter, priv_to_merge->color_map);
while (g_hash_table_iter_next (&iter, &key, &value))
{
const gchar *name;
GtkSymbolicColor *color;
name = key;
color = value;
if (!replace &&
g_hash_table_lookup (priv->color_map, name))
continue;
gtk_style_properties_map_color (props, name, color);
}
}
/* Merge symbolic style properties */
g_hash_table_iter_init (&iter, priv_to_merge->properties);
while (g_hash_table_iter_next (&iter, &key, &value))
{
PropertyData *prop_to_merge = value;
PropertyData *prop;
guint i;
prop = g_hash_table_lookup (priv->properties, key);
if (!prop)
{
prop = property_data_new ();
g_hash_table_insert (priv->properties, key, prop);
}
for (i = 0; i < prop_to_merge->values->len; i++)
{
ValueData *data;
ValueData *value;
data = &g_array_index (prop_to_merge->values, ValueData, i);
if (replace && data->state == GTK_STATE_FLAG_NORMAL &&
_gtk_is_css_typed_value_of_type (data->value, PANGO_TYPE_FONT_DESCRIPTION))
{
/* Let normal state override all states
* previously set in the original set
*/
property_data_remove_values (prop);
}
value = property_data_get_value (prop, data->state);
if (_gtk_is_css_typed_value_of_type (data->value, PANGO_TYPE_FONT_DESCRIPTION) &&
value->value != NULL)
{
PangoFontDescription *font_desc;
PangoFontDescription *font_desc_to_merge;
/* Handle merging of font descriptions */
font_desc = g_value_get_boxed (_gtk_css_typed_value_get (value->value));
font_desc_to_merge = g_value_get_boxed (_gtk_css_typed_value_get (data->value));
pango_font_description_merge (font_desc, font_desc_to_merge, replace);
}
else if (_gtk_is_css_typed_value_of_type (data->value, G_TYPE_PTR_ARRAY) &&
value->value != NULL)
{
GPtrArray *array, *array_to_merge;
gint i;
/* Append the array, mainly thought
* for the gtk-key-bindings property
*/
array = g_value_get_boxed (_gtk_css_typed_value_get (value->value));
array_to_merge = g_value_get_boxed (_gtk_css_typed_value_get (data->value));
for (i = 0; i < array_to_merge->len; i++)
g_ptr_array_add (array, g_ptr_array_index (array_to_merge, i));
}
else if (replace || value->value == NULL)
{
_gtk_css_value_unref (value->value);
value->value = _gtk_css_value_ref (data->value);
}
}
}
_gtk_style_provider_private_changed (GTK_STYLE_PROVIDER_PRIVATE (props));
}
G_GNUC_END_IGNORE_DEPRECATIONS;
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