C++ (Cpp) _gtk_css_computed_values_set_value Examples

Example #1

File: gtkcsstransition.c Project: jdapena/gtk

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);
}

Example #2

File: gtkcsscomputedvalues.c Project: soreau/gtk

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);
}