static GtkBitmask *
gtk_css_transition_set_values (GtkStyleAnimation *animation,
GtkBitmask *changed,
gint64 for_time_us,
GtkCssComputedValues *values)
{
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
GtkCssValue *value;
double progress;
if (transition->start_time >= for_time_us)
value = _gtk_css_value_ref (transition->start);
else if (transition->end_time <= for_time_us)
value = _gtk_css_value_ref (transition->end);
else
{
progress = (double) (for_time_us - transition->start_time) / (transition->end_time - transition->start_time);
progress = _gtk_css_ease_value_transform (transition->ease, progress);
value = _gtk_css_value_transition (transition->start,
transition->end,
progress);
if (value == NULL)
value = _gtk_css_value_ref (transition->end);
}
_gtk_css_computed_values_set_value (values, transition->property, value, NULL);
_gtk_css_value_unref (value);
return _gtk_bitmask_set (changed, transition->property, TRUE);
}
static GtkCssValue *
gtk_css_value_image_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
GtkCssImage *image, *computed;
image = _gtk_css_image_value_get_image (value);
if (image == NULL)
return _gtk_css_value_ref (value);
computed = _gtk_css_image_compute (image, property_id, provider, values, parent_values, dependencies);
if (computed == image)
{
g_object_unref (computed);
return _gtk_css_value_ref (value);
}
return _gtk_css_image_value_new (computed);
}
GtkStyleAnimation *
_gtk_css_transition_new (guint property,
GtkCssValue *start,
GtkCssValue *end,
GtkCssValue *ease,
gint64 start_time_us,
gint64 end_time_us)
{
GtkCssTransition *transition;
g_return_val_if_fail (start != NULL, NULL);
g_return_val_if_fail (end != NULL, NULL);
g_return_val_if_fail (ease != NULL, NULL);
g_return_val_if_fail (start_time_us <= end_time_us, NULL);
transition = g_object_new (GTK_TYPE_CSS_TRANSITION, NULL);
transition->property = property;
transition->start = _gtk_css_value_ref (start);
transition->end = _gtk_css_value_ref (end);
transition->ease = _gtk_css_value_ref (ease);
transition->start_time = start_time_us;
transition->end_time = end_time_us;
return GTK_STYLE_ANIMATION (transition);
}
static GtkCssValue *
gtk_css_value_bg_size_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
GtkCssValue *x, *y;
GtkCssDependencies x_deps, y_deps;
if (value->x == NULL && value->y == NULL)
return _gtk_css_value_ref (value);
x_deps = y_deps = 0;
x = y = NULL;
if (value->x)
x = _gtk_css_value_compute (value->x, property_id, provider, scale, values, parent_values, &x_deps);
if (value->y)
y = _gtk_css_value_compute (value->y, property_id, provider, scale, values, parent_values, &y_deps);
*dependencies = _gtk_css_dependencies_union (x_deps, y_deps);
return _gtk_css_bg_size_value_new (value->x ? x : NULL,
value->y ? y : NULL);
}
GtkCssValue *
_gtk_css_border_style_value_new (GtkBorderStyle border_style)
{
g_return_val_if_fail (border_style < G_N_ELEMENTS (border_style_values), NULL);
return _gtk_css_value_ref (&border_style_values[border_style]);
}
static GtkCssValue *
gtk_css_value_shadows_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
GtkCssValue *result;
GtkCssDependencies child_deps;
guint i;
if (value->len == 0)
return _gtk_css_value_ref (value);
result = gtk_css_shadows_value_new (value->values, value->len);
for (i = 0; i < value->len; i++)
{
result->values[i] = _gtk_css_value_compute (value->values[i], property_id, provider, scale, values, parent_values, &child_deps);
*dependencies = _gtk_css_dependencies_union (*dependencies, child_deps);
}
return result;
}
static GtkCssValue *
gtk_css_value_rgba_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
return _gtk_css_value_ref (value);
}
GtkCssValue *
gtk_css_icon_theme_value_new (GtkIconTheme *icontheme)
{
GtkCssValue *result;
if (icontheme == NULL)
return _gtk_css_value_ref (&default_icon_theme_value);
result = g_object_get_data (G_OBJECT (icontheme), "-gtk-css-value");
if (result)
return _gtk_css_value_ref (result);
result = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_ICON_THEME);
result->icontheme = g_object_ref (icontheme);
g_object_set_data (G_OBJECT (icontheme), I_("-gtk-css-value"), result);
result->changed_id = g_signal_connect (icontheme, "changed", G_CALLBACK (gtk_css_value_icon_theme_changed_cb), result);
return result;
}
static GtkCssValue *
gtk_css_value_enum_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
return _gtk_css_value_ref (value);
}
GtkCssValue *
_gtk_css_bg_size_value_parse (GtkCssParser *parser)
{
GtkCssValue *x, *y;
if (_gtk_css_parser_try (parser, "cover", TRUE))
return _gtk_css_value_ref (&cover_singleton);
else if (_gtk_css_parser_try (parser, "contain", TRUE))
return _gtk_css_value_ref (&contain_singleton);
if (_gtk_css_parser_try (parser, "auto", TRUE))
x = NULL;
else
{
x = _gtk_css_number_value_parse (parser,
GTK_CSS_POSITIVE_ONLY
| GTK_CSS_PARSE_PERCENT
| GTK_CSS_PARSE_LENGTH);
if (x == NULL)
return NULL;
}
if (_gtk_css_parser_try (parser, "auto", TRUE))
y = NULL;
else if (!gtk_css_number_value_can_parse (parser))
y = NULL;
else
{
y = _gtk_css_number_value_parse (parser,
GTK_CSS_POSITIVE_ONLY
| GTK_CSS_PARSE_PERCENT
| GTK_CSS_PARSE_LENGTH);
if (y == NULL)
{
_gtk_css_value_unref (x);
return NULL;
}
}
return _gtk_css_bg_size_value_new (x, y);
}
static GtkCssValue *
gtk_css_value_bg_size_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
GtkCssValue *x, *y;
if (start->cover)
return end->cover ? _gtk_css_value_ref (end) : NULL;
if (start->contain)
return end->contain ? _gtk_css_value_ref (end) : NULL;
if ((start->x != NULL) ^ (end->x != NULL) ||
(start->y != NULL) ^ (end->y != NULL))
return NULL;
if (start->x)
{
x = _gtk_css_value_transition (start->x, end->x, property_id, progress);
if (x == NULL)
return NULL;
}
else
x = NULL;
if (start->y)
{
y = _gtk_css_value_transition (start->y, end->y, property_id, progress);
if (y == NULL)
{
_gtk_css_value_unref (x);
return NULL;
}
}
else
y = NULL;
return _gtk_css_bg_size_value_new (x, y);
}
GtkCssValue *
_gtk_css_image_value_new (GtkCssImage *image)
{
static GtkCssValue none_singleton = { >K_CSS_VALUE_IMAGE, 1, NULL };
GtkCssValue *value;
if (image == NULL)
return _gtk_css_value_ref (&none_singleton);
value = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_IMAGE);
value->image = image;
return value;
}
GtkCssValue *
_gtk_css_bg_size_value_new (GtkCssValue *x,
GtkCssValue *y)
{
GtkCssValue *result;
if (x == NULL && y == NULL)
return _gtk_css_value_ref (&auto_singleton);
result = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_BG_SIZE);
result->x = x;
result->y = y;
return result;
}
GtkCssValue *
_gtk_css_border_style_value_try_parse (GtkCssParser *parser)
{
guint i;
g_return_val_if_fail (parser != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (border_style_values); i++)
{
if (_gtk_css_parser_try (parser, border_style_values[i].name, TRUE))
return _gtk_css_value_ref (&border_style_values[i]);
}
return NULL;
}
static GtkCssValue *
gtk_css_value_image_compute (GtkCssValue *value,
guint property_id,
GtkStyleProvider *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssImage *image, *computed;
image = _gtk_css_image_value_get_image (value);
if (image == NULL)
return _gtk_css_value_ref (value);
computed = _gtk_css_image_compute (image, property_id, provider, style, parent_style);
if (computed == image)
{
g_object_unref (computed);
return _gtk_css_value_ref (value);
}
return _gtk_css_image_value_new (computed);
}
GtkCssValue *
_gtk_css_number_value_new (double value,
GtkCssUnit unit)
{
static GtkCssValue number_singletons[] = {
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_NUMBER, 0 },
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_NUMBER, 1 },
};
static GtkCssValue px_singletons[] = {
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 0 },
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 1 },
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 2 },
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 3 },
{ >K_CSS_VALUE_NUMBER, 1, GTK_CSS_PX, 4 },
};
GtkCssValue *result;
if (unit == GTK_CSS_NUMBER && (value == 0 || value == 1))
return _gtk_css_value_ref (&number_singletons[(int) value]);
if (unit == GTK_CSS_PX &&
(value == 0 ||
value == 1 ||
value == 2 ||
value == 3 ||
value == 4))
{
return _gtk_css_value_ref (&px_singletons[(int) value]);
}
result = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_NUMBER);
result->unit = unit;
result->value = value;
return result;
}
void
_gtk_css_computed_values_set_animated_value (GtkCssComputedValues *values,
guint id,
GtkCssValue *value)
{
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
gtk_internal_return_if_fail (value != NULL);
if (values->animated_values == NULL)
values->animated_values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
if (id >= values->animated_values->len)
g_ptr_array_set_size (values->animated_values, id + 1);
if (g_ptr_array_index (values->animated_values, id))
_gtk_css_value_unref (g_ptr_array_index (values->animated_values, id));
g_ptr_array_index (values->animated_values, id) = _gtk_css_value_ref (value);
}
void
gtk_css_animated_style_set_animated_value (GtkCssAnimatedStyle *style,
guint id,
GtkCssValue *value)
{
gtk_internal_return_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style));
gtk_internal_return_if_fail (value != NULL);
if (style->animated_values == NULL)
style->animated_values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
if (id >= style->animated_values->len)
g_ptr_array_set_size (style->animated_values, id + 1);
if (g_ptr_array_index (style->animated_values, id))
_gtk_css_value_unref (g_ptr_array_index (style->animated_values, id));
g_ptr_array_index (style->animated_values, id) = _gtk_css_value_ref (value);
}
void
_gtk_css_computed_values_set_value (GtkCssComputedValues *values,
guint id,
GtkCssValue *value,
GtkCssDependencies dependencies,
GtkCssSection *section)
{
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
if (values->values == NULL)
values->values = g_ptr_array_new_full (_gtk_css_style_property_get_n_properties (),
(GDestroyNotify)_gtk_css_value_unref);
if (id >= values->values->len)
g_ptr_array_set_size (values->values, id + 1);
if (g_ptr_array_index (values->values, id))
_gtk_css_value_unref (g_ptr_array_index (values->values, id));
g_ptr_array_index (values->values, id) = _gtk_css_value_ref (value);
if (dependencies & (GTK_CSS_DEPENDS_ON_PARENT | GTK_CSS_EQUALS_PARENT))
values->depends_on_parent = _gtk_bitmask_set (values->depends_on_parent, id, TRUE);
if (dependencies & (GTK_CSS_EQUALS_PARENT))
values->equals_parent = _gtk_bitmask_set (values->equals_parent, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_COLOR))
values->depends_on_color = _gtk_bitmask_set (values->depends_on_color, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_FONT_SIZE))
values->depends_on_font_size = _gtk_bitmask_set (values->depends_on_font_size, id, TRUE);
if (values->sections && values->sections->len > id && g_ptr_array_index (values->sections, id))
{
gtk_css_section_unref (g_ptr_array_index (values->sections, id));
g_ptr_array_index (values->sections, id) = NULL;
}
if (section)
{
if (values->sections == NULL)
values->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
if (values->sections->len <= id)
g_ptr_array_set_size (values->sections, id + 1);
g_ptr_array_index (values->sections, id) = gtk_css_section_ref (section);
}
}
static GtkCssValue *
gtk_css_value_inherit_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
if (parent_style)
{
return _gtk_css_value_ref (gtk_css_style_get_value (parent_style, property_id));
}
else
{
return _gtk_css_value_compute (_gtk_css_initial_value_get (),
property_id,
provider,
style,
parent_style);
}
}
void
_gtk_css_computed_values_compute_value (GtkCssComputedValues *values,
GtkStyleProviderPrivate *provider,
GtkCssComputedValues *parent_values,
guint id,
GtkCssValue *specified,
GtkCssSection *section)
{
GtkCssDependencies dependencies;
GtkCssValue *value;
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
gtk_internal_return_if_fail (parent_values == NULL || GTK_IS_CSS_COMPUTED_VALUES (parent_values));
/* http://www.w3.org/TR/css3-cascade/#cascade
* Then, for every element, the value for each property can be found
* by following this pseudo-algorithm:
* 1) Identify all declarations that apply to the element
*/
if (specified == NULL)
{
GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
if (_gtk_css_style_property_is_inherit (prop))
specified = _gtk_css_inherit_value_new ();
else
specified = _gtk_css_initial_value_new ();
}
else
_gtk_css_value_ref (specified);
value = _gtk_css_value_compute (specified, id, provider, values, parent_values, &dependencies);
_gtk_css_computed_values_set_value (values, id, value, dependencies, section);
_gtk_css_value_unref (value);
_gtk_css_value_unref (specified);
}
static GtkCssValue *
gtk_css_value_bg_size_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkCssValue *x, *y;
if (value->x == NULL && value->y == NULL)
return _gtk_css_value_ref (value);
x = y = NULL;
if (value->x)
x = _gtk_css_value_compute (value->x, property_id, provider, style, parent_style);
if (value->y)
y = _gtk_css_value_compute (value->y, property_id, provider, style, parent_style);
return _gtk_css_bg_size_value_new (value->x ? x : NULL,
value->y ? y : NULL);
}
static GtkCssValue *
gtk_css_value_inherit_compute (GtkCssValue *value,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
if (parent_values)
{
*dependencies = GTK_CSS_EQUALS_PARENT;
return _gtk_css_value_ref (_gtk_css_computed_values_get_value (parent_values, property_id));
}
else
{
return _gtk_css_value_compute (_gtk_css_initial_value_get (),
property_id,
provider,
values,
parent_values,
dependencies);
}
}
GtkStyleAnimation *
_gtk_css_animation_new (const char *name,
GtkCssKeyframes *keyframes,
gint64 timestamp,
gint64 delay_us,
gint64 duration_us,
GtkCssValue *ease,
GtkCssDirection direction,
GtkCssPlayState play_state,
GtkCssFillMode fill_mode,
double iteration_count)
{
GtkCssAnimation *animation;
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (keyframes != NULL, NULL);
g_return_val_if_fail (ease != NULL, NULL);
g_return_val_if_fail (iteration_count >= 0, NULL);
animation = g_object_new (GTK_TYPE_CSS_ANIMATION, NULL);
animation->name = g_strdup (name);
animation->keyframes = _gtk_css_keyframes_ref (keyframes);
if (play_state == GTK_CSS_PLAY_STATE_PAUSED)
animation->timestamp = - delay_us;
else
animation->timestamp = timestamp + delay_us;
animation->duration = duration_us;
animation->ease = _gtk_css_value_ref (ease);
animation->direction = direction;
animation->play_state = play_state;
animation->fill_mode = fill_mode;
animation->iteration_count = iteration_count;
return GTK_STYLE_ANIMATION (animation);
}
static GtkCssValue *
gtk_css_value_number_compute (GtkCssValue *number,
guint property_id,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *values,
GtkCssComputedValues *parent_values,
GtkCssDependencies *dependencies)
{
switch (number->unit)
{
default:
g_assert_not_reached();
/* fall through */
case GTK_CSS_PERCENT:
/* percentages for font sizes are computed, other percentages aren't */
if (property_id == GTK_CSS_PROPERTY_FONT_SIZE)
return _gtk_css_number_value_new (number->value / 100.0 *
get_base_font_size (property_id, provider, values, parent_values, dependencies),
GTK_CSS_PX);
case GTK_CSS_NUMBER:
case GTK_CSS_PX:
case GTK_CSS_DEG:
case GTK_CSS_S:
return _gtk_css_value_ref (number);
case GTK_CSS_PT:
return _gtk_css_number_value_new (number->value * 96.0 / 72.0,
GTK_CSS_PX);
case GTK_CSS_PC:
return _gtk_css_number_value_new (number->value * 96.0 / 72.0 * 12.0,
GTK_CSS_PX);
break;
case GTK_CSS_IN:
return _gtk_css_number_value_new (number->value * 96.0,
GTK_CSS_PX);
break;
case GTK_CSS_CM:
return _gtk_css_number_value_new (number->value * 96.0 * 0.39370078740157477,
GTK_CSS_PX);
break;
case GTK_CSS_MM:
return _gtk_css_number_value_new (number->value * 96.0 * 0.039370078740157477,
GTK_CSS_PX);
break;
case GTK_CSS_EM:
return _gtk_css_number_value_new (number->value *
get_base_font_size (property_id, provider, values, parent_values, dependencies),
GTK_CSS_PX);
break;
case GTK_CSS_EX:
/* for now we pretend ex is half of em */
return _gtk_css_number_value_new (number->value * 0.5 *
get_base_font_size (property_id, provider, values, parent_values, dependencies),
GTK_CSS_PX);
case GTK_CSS_RAD:
return _gtk_css_number_value_new (number->value * 360.0 / (2 * G_PI),
GTK_CSS_DEG);
case GTK_CSS_GRAD:
return _gtk_css_number_value_new (number->value * 360.0 / 400.0,
GTK_CSS_DEG);
case GTK_CSS_TURN:
return _gtk_css_number_value_new (number->value * 360.0,
GTK_CSS_DEG);
case GTK_CSS_MS:
return _gtk_css_number_value_new (number->value / 1000.0,
GTK_CSS_S);
}
}
static GtkCssValue *
gtk_css_value_dimension_compute (GtkCssValue *number,
guint property_id,
GtkStyleProviderPrivate *provider,
GtkCssStyle *style,
GtkCssStyle *parent_style)
{
GtkBorderStyle border_style;
/* special case according to http://dev.w3.org/csswg/css-backgrounds/#the-border-width */
switch (property_id)
{
case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
border_style = _gtk_css_border_style_value_get(gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_STYLE));
if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
return gtk_css_dimension_value_new (0, GTK_CSS_NUMBER);
break;
default:
break;
}
switch (number->unit)
{
default:
g_assert_not_reached();
/* fall through */
case GTK_CSS_PERCENT:
/* percentages for font sizes are computed, other percentages aren't */
if (property_id == GTK_CSS_PROPERTY_FONT_SIZE)
return gtk_css_dimension_value_new (number->value / 100.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_NUMBER:
case GTK_CSS_PX:
case GTK_CSS_DEG:
case GTK_CSS_S:
return _gtk_css_value_ref (number);
case GTK_CSS_PT:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0,
GTK_CSS_PX);
case GTK_CSS_PC:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0 * 12.0,
GTK_CSS_PX);
case GTK_CSS_IN:
return gtk_css_dimension_value_new (number->value * get_dpi (style),
GTK_CSS_PX);
case GTK_CSS_CM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) * 0.39370078740157477,
GTK_CSS_PX);
case GTK_CSS_MM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) * 0.039370078740157477,
GTK_CSS_PX);
case GTK_CSS_EM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_EX:
/* for now we pretend ex is half of em */
return gtk_css_dimension_value_new (number->value * 0.5 * get_dpi (style) / 72.0 *
get_base_font_size (property_id, provider, style, parent_style),
GTK_CSS_PX);
case GTK_CSS_REM:
return gtk_css_dimension_value_new (number->value * get_dpi (style) / 72.0 *
_gtk_css_font_size_get_default (provider),
GTK_CSS_PX);
case GTK_CSS_RAD:
return gtk_css_dimension_value_new (number->value * 360.0 / (2 * G_PI),
GTK_CSS_DEG);
case GTK_CSS_GRAD:
return gtk_css_dimension_value_new (number->value * 360.0 / 400.0,
GTK_CSS_DEG);
case GTK_CSS_TURN:
return gtk_css_dimension_value_new (number->value * 360.0,
GTK_CSS_DEG);
case GTK_CSS_MS:
return gtk_css_dimension_value_new (number->value / 1000.0,
GTK_CSS_S);
}
}
void
_gtk_css_computed_values_compute_value (GtkCssComputedValues *values,
GtkStyleProviderPrivate *provider,
int scale,
GtkCssComputedValues *parent_values,
guint id,
GtkCssValue *specified,
GtkCssSection *section)
{
GtkCssDependencies dependencies;
GtkCssValue *value;
gtk_internal_return_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values));
gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
gtk_internal_return_if_fail (parent_values == NULL || GTK_IS_CSS_COMPUTED_VALUES (parent_values));
/* http://www.w3.org/TR/css3-cascade/#cascade
* Then, for every element, the value for each property can be found
* by following this pseudo-algorithm:
* 1) Identify all declarations that apply to the element
*/
if (specified == NULL)
{
GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
if (_gtk_css_style_property_is_inherit (prop))
specified = _gtk_css_inherit_value_new ();
else
specified = _gtk_css_initial_value_new ();
}
else
_gtk_css_value_ref (specified);
value = _gtk_css_value_compute (specified, id, provider, scale, values, parent_values, &dependencies);
if (values->values == NULL)
values->values = g_ptr_array_new_full (_gtk_css_style_property_get_n_properties (),
(GDestroyNotify)_gtk_css_value_unref);
if (id >= values->values->len)
g_ptr_array_set_size (values->values, id + 1);
if (g_ptr_array_index (values->values, id))
_gtk_css_value_unref (g_ptr_array_index (values->values, id));
g_ptr_array_index (values->values, id) = _gtk_css_value_ref (value);
if (dependencies & (GTK_CSS_DEPENDS_ON_PARENT | GTK_CSS_EQUALS_PARENT))
values->depends_on_parent = _gtk_bitmask_set (values->depends_on_parent, id, TRUE);
if (dependencies & (GTK_CSS_EQUALS_PARENT))
values->equals_parent = _gtk_bitmask_set (values->equals_parent, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_COLOR))
values->depends_on_color = _gtk_bitmask_set (values->depends_on_color, id, TRUE);
if (dependencies & (GTK_CSS_DEPENDS_ON_FONT_SIZE))
values->depends_on_font_size = _gtk_bitmask_set (values->depends_on_font_size, id, TRUE);
if (values->sections && values->sections->len > id && g_ptr_array_index (values->sections, id))
{
gtk_css_section_unref (g_ptr_array_index (values->sections, id));
g_ptr_array_index (values->sections, id) = NULL;
}
if (section)
{
if (values->sections == NULL)
values->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
if (values->sections->len <= id)
g_ptr_array_set_size (values->sections, id + 1);
g_ptr_array_index (values->sections, id) = gtk_css_section_ref (section);
}
_gtk_css_value_unref (value);
_gtk_css_value_unref (specified);
}
static gboolean
gtk_css_image_radial_parse (GtkCssImage *image,
GtkCssParser *parser)
{
GtkCssImageRadial *radial = GTK_CSS_IMAGE_RADIAL (image);
gboolean has_shape = FALSE;
gboolean has_size = FALSE;
gboolean found_one = FALSE;
guint i;
static struct {
const char *name;
guint value;
} names[] = {
{ "closest-side", GTK_CSS_CLOSEST_SIDE },
{ "farthest-side", GTK_CSS_FARTHEST_SIDE },
{ "closest-corner", GTK_CSS_CLOSEST_CORNER },
{ "farthest-corner", GTK_CSS_FARTHEST_CORNER }
};
if (_gtk_css_parser_try (parser, "repeating-radial-gradient(", TRUE))
radial->repeating = TRUE;
else if (_gtk_css_parser_try (parser, "radial-gradient(", TRUE))
radial->repeating = FALSE;
else
{
_gtk_css_parser_error (parser, "Not a radial gradient");
return FALSE;
}
do {
found_one = FALSE;
if (!has_shape && _gtk_css_parser_try (parser, "circle", TRUE))
{
radial->circle = TRUE;
found_one = has_shape = TRUE;
}
else if (!has_shape && _gtk_css_parser_try (parser, "ellipse", TRUE))
{
radial->circle = FALSE;
found_one = has_shape = TRUE;
}
else if (!has_size)
{
for (i = 0; i < G_N_ELEMENTS (names); i++)
{
if (_gtk_css_parser_try (parser, names[i].name, TRUE))
{
found_one = has_size = TRUE;
radial->size = names[i].value;
break;
}
}
if (!has_size)
{
if (_gtk_css_parser_has_number (parser))
radial->sizes[0] = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_LENGTH | GTK_CSS_PARSE_PERCENT);
if (_gtk_css_parser_has_number (parser))
radial->sizes[1] = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_LENGTH | GTK_CSS_PARSE_PERCENT);
found_one = has_size = radial->sizes[0] != NULL;
}
}
} while (found_one && !(has_shape && has_size));
if (_gtk_css_parser_try (parser, "at", TRUE))
{
radial->position = _gtk_css_position_value_parse (parser);
if (!radial->position)
return FALSE;
if (!_gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Expected a comma here");
return FALSE;
}
}
else
{
radial->position = _gtk_css_position_value_new (_gtk_css_number_value_new (50, GTK_CSS_PERCENT),
_gtk_css_number_value_new (50, GTK_CSS_PERCENT));
if ((has_shape || has_size) &&
!_gtk_css_parser_try (parser, ",", TRUE))
{
_gtk_css_parser_error (parser, "Expected a comma here");
return FALSE;
}
}
if (!has_size)
{
radial->size = GTK_CSS_FARTHEST_CORNER;
}
if (!has_shape)
{
if (radial->sizes[0] && radial->sizes[1])
radial->circle = FALSE;
else
radial->circle = TRUE;
}
if (has_shape && radial->circle)
{
if (radial->sizes[0] && radial->sizes[1])
{
_gtk_css_parser_error (parser, "Circular gradient can only have one size");
return FALSE;
}
if (radial->sizes[0] && _gtk_css_number_value_get_unit (radial->sizes[0]) == GTK_CSS_PERCENT)
{
_gtk_css_parser_error (parser, "Circular gradient cannot have percentage as size");
return FALSE;
}
}
if (has_size && !radial->circle)
{
if (!radial->sizes[1])
radial->sizes[1] = _gtk_css_value_ref (radial->sizes[0]);
}
do {
GtkCssImageRadialColorStop stop;
stop.color = _gtk_css_color_value_parse (parser);
if (stop.color == NULL)
return FALSE;
if (_gtk_css_parser_has_number (parser))
{
stop.offset = _gtk_css_number_value_parse (parser,
GTK_CSS_PARSE_PERCENT
| GTK_CSS_PARSE_LENGTH);
if (stop.offset == NULL)
{
_gtk_css_value_unref (stop.color);
return FALSE;
}
}
else
{
stop.offset = NULL;
}
g_array_append_val (radial->stops, stop);
} while (_gtk_css_parser_try (parser, ",", TRUE));
if (!_gtk_css_parser_try (parser, ")", TRUE))
{
_gtk_css_parser_error (parser, "Missing closing bracket at end of radial gradient");
return FALSE;
}
return TRUE;
}
GtkCssValue *
_gtk_css_unset_value_new (void)
{
return _gtk_css_value_ref (&unset);
}
goto fail;
}
if (i == 0)
{
_gtk_css_parser_error (parser, "Expected a number");
goto fail;
}
for (; i < 4; i++)
y[i] = _gtk_css_value_ref (y[(i - 1) >> 1]);
}
else
{
for (i = 0; i < 4; i++)
y[i] = _gtk_css_value_ref (x[i]);
}
for (i = 0; i < 4; i++)
{
values[i] = _gtk_css_corner_value_new (x[i], y[i]);
}
return TRUE;
fail:
for (i = 0; i < 4; i++)
{
if (x[i])
_gtk_css_value_unref (x[i]);
if (y[i])