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[~andy/gtk] / gtk / gtkcssarrayvalue.c
index ba919da45e903a59f8f35fc332b9530b8b874a43..45f1fb2c21e70a61a406e7ad3dd0b699196c3271 100644 (file)
@@ -18,6 +18,8 @@
 #include "config.h"
 
 #include "gtkcssarrayvalueprivate.h"
+#include "gtkcssimagevalueprivate.h"
+#include "gtkcssstylepropertyprivate.h"
 
 #include <string.h>
 
@@ -40,6 +42,264 @@ gtk_css_value_array_free (GtkCssValue *value)
   g_slice_free1 (sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (value->n_values - 1), value);
 }
 
+static GtkCssValue *
+gtk_css_value_array_compute (GtkCssValue             *value,
+                             guint                    property_id,
+                             GtkStyleProviderPrivate *provider,
+                             GtkCssComputedValues    *values,
+                             GtkCssComputedValues    *parent_values,
+                             GtkCssDependencies      *dependencies)
+{
+  GtkCssValue *result;
+  GtkCssValue *i_value;
+  guint i, j;
+  GtkCssDependencies child_deps;
+
+  result = NULL;
+  for (i = 0; i < value->n_values; i++)
+    {
+      i_value =  _gtk_css_value_compute (value->values[i], property_id, provider, values, parent_values, &child_deps);
+
+      *dependencies = _gtk_css_dependencies_union (*dependencies, child_deps);
+
+      if (result == NULL &&
+         i_value != value->values[i])
+       {
+         result = _gtk_css_array_value_new_from_array (value->values, value->n_values);
+         for (j = 0; j < i; j++)
+           _gtk_css_value_ref (result->values[j]);
+       }
+
+      if (result != NULL)
+       result->values[i] = i_value;
+      else
+       _gtk_css_value_unref (i_value);
+    }
+
+  if (result == NULL)
+    return _gtk_css_value_ref (value);
+
+  return result;
+}
+
+static gboolean
+gtk_css_value_array_equal (const GtkCssValue *value1,
+                           const GtkCssValue *value2)
+{
+  guint i;
+
+  if (value1->n_values != value2->n_values)
+    return FALSE;
+
+  for (i = 0; i < value1->n_values; i++)
+    {
+      if (!_gtk_css_value_equal (value1->values[i],
+                                 value2->values[i]))
+        return FALSE;
+    }
+
+  return TRUE;
+}
+
+static guint
+gcd (guint a, guint b)
+{
+  while (b != 0)
+    {
+      guint t = b;
+      b = a % b;
+      a = t;
+    }
+  return a;
+}
+
+static guint
+lcm (guint a, guint b)
+{
+  return a / gcd (a, b) * b;
+}
+
+static GtkCssValue *
+gtk_css_value_array_transition_repeat (GtkCssValue *start,
+                                       GtkCssValue *end,
+                                       guint        property_id,
+                                       double       progress)
+{
+  GtkCssValue **transitions;
+  guint i, n;
+
+  n = lcm (start->n_values, end->n_values);
+  transitions = g_newa (GtkCssValue *, n);
+
+  for (i = 0; i < n; i++)
+    {
+      transitions[i] = _gtk_css_value_transition (start->values[i % start->n_values],
+                                                  end->values[i % end->n_values],
+                                                  property_id,
+                                                  progress);
+      if (transitions[i] == NULL)
+        {
+          while (i--)
+            _gtk_css_value_unref (transitions[i]);
+          return NULL;
+        }
+    }
+
+  return _gtk_css_array_value_new_from_array (transitions, n);
+}
+
+static GtkCssValue *
+gtk_css_array_value_create_default_transition_value (guint property_id)
+{
+  switch (property_id)
+    {
+    case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
+      return _gtk_css_image_value_new (NULL);
+    default:
+      g_return_val_if_reached (NULL);
+    }
+}
+
+static GtkCssValue *
+gtk_css_value_array_transition_extend (GtkCssValue *start,
+                                       GtkCssValue *end,
+                                       guint        property_id,
+                                       double       progress)
+{
+  GtkCssValue **transitions;
+  guint i, n;
+
+  n = MAX (start->n_values, end->n_values);
+  transitions = g_newa (GtkCssValue *, n);
+
+  for (i = 0; i < MIN (start->n_values, end->n_values); i++)
+    {
+      transitions[i] = _gtk_css_value_transition (start->values[i],
+                                                  end->values[i],
+                                                  property_id,
+                                                  progress);
+      if (transitions[i] == NULL)
+        {
+          while (i--)
+            _gtk_css_value_unref (transitions[i]);
+          return NULL;
+        }
+    }
+
+  if (start->n_values != end->n_values)
+    {
+      GtkCssValue *default_value;
+
+      default_value = gtk_css_array_value_create_default_transition_value (property_id);
+
+      for (; i < start->n_values; i++)
+        {
+          transitions[i] = _gtk_css_value_transition (start->values[i],
+                                                      default_value,
+                                                      property_id,
+                                                      progress);
+          if (transitions[i] == NULL)
+            {
+              while (i--)
+                _gtk_css_value_unref (transitions[i]);
+              return NULL;
+            }
+        }
+
+      for (; i < end->n_values; i++)
+        {
+          transitions[i] = _gtk_css_value_transition (default_value,
+                                                      end->values[i],
+                                                      property_id,
+                                                      progress);
+          if (transitions[i] == NULL)
+            {
+              while (i--)
+                _gtk_css_value_unref (transitions[i]);
+              return NULL;
+            }
+        }
+
+    }
+
+  g_assert (i == n);
+
+  return _gtk_css_array_value_new_from_array (transitions, n);
+}
+
+static GtkCssValue *
+gtk_css_value_array_transition (GtkCssValue *start,
+                                GtkCssValue *end,
+                                guint        property_id,
+                                double       progress)
+{
+  switch (property_id)
+    {
+    case GTK_CSS_PROPERTY_BACKGROUND_CLIP:
+    case GTK_CSS_PROPERTY_BACKGROUND_ORIGIN:
+    case GTK_CSS_PROPERTY_BACKGROUND_SIZE:
+    case GTK_CSS_PROPERTY_BACKGROUND_POSITION:
+    case GTK_CSS_PROPERTY_BACKGROUND_REPEAT:
+      return gtk_css_value_array_transition_repeat (start, end, property_id, progress);
+    case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
+      return gtk_css_value_array_transition_extend (start, end, property_id, progress);
+    case GTK_CSS_PROPERTY_COLOR:
+    case GTK_CSS_PROPERTY_FONT_SIZE:
+    case GTK_CSS_PROPERTY_BACKGROUND_COLOR:
+    case GTK_CSS_PROPERTY_FONT_FAMILY:
+    case GTK_CSS_PROPERTY_FONT_STYLE:
+    case GTK_CSS_PROPERTY_FONT_VARIANT:
+    case GTK_CSS_PROPERTY_FONT_WEIGHT:
+    case GTK_CSS_PROPERTY_TEXT_SHADOW:
+    case GTK_CSS_PROPERTY_ICON_SHADOW:
+    case GTK_CSS_PROPERTY_BOX_SHADOW:
+    case GTK_CSS_PROPERTY_MARGIN_TOP:
+    case GTK_CSS_PROPERTY_MARGIN_LEFT:
+    case GTK_CSS_PROPERTY_MARGIN_BOTTOM:
+    case GTK_CSS_PROPERTY_MARGIN_RIGHT:
+    case GTK_CSS_PROPERTY_PADDING_TOP:
+    case GTK_CSS_PROPERTY_PADDING_LEFT:
+    case GTK_CSS_PROPERTY_PADDING_BOTTOM:
+    case GTK_CSS_PROPERTY_PADDING_RIGHT:
+    case GTK_CSS_PROPERTY_BORDER_TOP_STYLE:
+    case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
+    case GTK_CSS_PROPERTY_BORDER_LEFT_STYLE:
+    case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
+    case GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE:
+    case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
+    case GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE:
+    case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
+    case GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS:
+    case GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS:
+    case GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS:
+    case GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS:
+    case GTK_CSS_PROPERTY_OUTLINE_STYLE:
+    case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
+    case GTK_CSS_PROPERTY_OUTLINE_OFFSET:
+    case GTK_CSS_PROPERTY_BORDER_TOP_COLOR:
+    case GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR:
+    case GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR:
+    case GTK_CSS_PROPERTY_BORDER_LEFT_COLOR:
+    case GTK_CSS_PROPERTY_OUTLINE_COLOR:
+    case GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE:
+    case GTK_CSS_PROPERTY_BORDER_IMAGE_REPEAT:
+    case GTK_CSS_PROPERTY_BORDER_IMAGE_SLICE:
+    case GTK_CSS_PROPERTY_BORDER_IMAGE_WIDTH:
+    case GTK_CSS_PROPERTY_ENGINE:
+    default:
+      /* keep all values that are not arrays here, so we get a warning if we ever turn them
+       * into arrays and start animating them. */
+      g_warning ("Don't know how to transition arrays for property '%s'", 
+                 _gtk_style_property_get_name (GTK_STYLE_PROPERTY (_gtk_css_style_property_lookup_by_id (property_id))));
+    case GTK_CSS_PROPERTY_TRANSITION_PROPERTY:
+    case GTK_CSS_PROPERTY_TRANSITION_DURATION:
+    case GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION:
+    case GTK_CSS_PROPERTY_TRANSITION_DELAY:
+    case GTK_CSS_PROPERTY_GTK_KEY_BINDINGS:
+      return NULL;
+    }
+}
+
 static void
 gtk_css_value_array_print (const GtkCssValue *value,
                            GString           *string)
@@ -62,21 +322,60 @@ gtk_css_value_array_print (const GtkCssValue *value,
 
 static const GtkCssValueClass GTK_CSS_VALUE_ARRAY = {
   gtk_css_value_array_free,
+  gtk_css_value_array_compute,
+  gtk_css_value_array_equal,
+  gtk_css_value_array_transition,
   gtk_css_value_array_print
 };
 
 GtkCssValue *
-_gtk_css_array_value_new (GtkCssValue **values,
-                          guint         n_values)
+_gtk_css_array_value_new (GtkCssValue *content)
 {
-  GtkCssValue *result;
-  
-  g_return_val_if_fail (values != NULL || n_values == 0, NULL);
+  g_return_val_if_fail (content != NULL, NULL);
+
+  return _gtk_css_array_value_new_from_array (&content, 1);
+}
 
-  result = _gtk_css_value_alloc (&GTK_CSS_VALUE_ARRAY, sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (MAX (1, n_values) - 1));
+GtkCssValue *
+_gtk_css_array_value_new_from_array (GtkCssValue **values,
+                                     guint         n_values)
+{
+  GtkCssValue *result;
+           
+  g_return_val_if_fail (values != NULL, NULL);
+  g_return_val_if_fail (n_values > 0, NULL);
+         
+  result = _gtk_css_value_alloc (&GTK_CSS_VALUE_ARRAY, sizeof (GtkCssValue) + sizeof (GtkCssValue *) * (n_values - 1));
   result->n_values = n_values;
   memcpy (&result->values[0], values, sizeof (GtkCssValue *) * n_values);
+            
+  return result;
+}
+
+GtkCssValue *
+_gtk_css_array_value_parse (GtkCssParser *parser,
+                            GtkCssValue  *(* parse_func) (GtkCssParser *parser))
+{
+  GtkCssValue *value, *result;
+  GPtrArray *values;
+
+  values = g_ptr_array_new ();
+
+  do {
+    value = parse_func (parser);
+
+    if (value == NULL)
+      {
+        g_ptr_array_set_free_func (values, (GDestroyNotify) _gtk_css_value_unref);
+        g_ptr_array_free (values, TRUE);
+        return NULL;
+      }
+
+    g_ptr_array_add (values, value);
+  } while (_gtk_css_parser_try (parser, ",", TRUE));
 
+  result = _gtk_css_array_value_new_from_array ((GtkCssValue **) values->pdata, values->len);
+  g_ptr_array_free (values, TRUE);
   return result;
 }