CSS Independent Transform Properties

Source/core/css/resolver/StyleBuilderConverter.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 917 matching lines @@
 
     CSSValueList* valueList = toCSSValueList(value);
     coordinates.reserveInitialCapacity(valueList->length());
     for (auto& snapCoordinate : *valueList) {
         coordinates.uncheckedAppend(convertPosition(state, snapCoordinate.get()));
     }
 
     return coordinates;
 }
 
+PassRefPtr<TranslateTransformOperation> StyleBuilderConverter::convertTranslate(StyleResolverState& state, CSSValue* value)
+{
+    CSSValueList* list = toCSSValueList(value);
+    ASSERT(list->length() >= 1 && list->length() <= 3);
+    Length tx = toCSSPrimitiveValue(list->item(0))->convertToLength(state.cssToLengthConversionData());
+    Length ty(0, Fixed);
+    double tz = 0;
+    TransformOperation::OperationType type = TransformOperation::TranslateX;
+
+    if (list->length() >= 2) {
+        ty = toCSSPrimitiveValue(list->item(1))->convertToLength(state.cssToLengthConversionData());
+        type = TransformOperation::Translate;
+    }
+    if (list->length() == 3) {
+        tz = toCSSPrimitiveValue(list->item(2))->getDoubleValue();
+        type = TransformOperation::Translate3D;
+    }
+    return TranslateTransformOperation::create(tx, ty, tz, type);
+}
+
+PassRefPtr<RotateTransformOperation> StyleBuilderConverter::convertRotate(StyleResolverState& state, CSSValue* value)
+{
+    CSSValueList* list = toCSSValueList(value);
+    ASSERT(list->length() == 1 || list->length() == 4);
+    double angle = toCSSPrimitiveValue(list->item(0))->computeDegrees();
+    double x = 0;
+    double y = 0;
+    double z = 1;
+    if (list->length() == 4) {
+        x = toCSSPrimitiveValue(list->item(1))->getDoubleValue();
+        y = toCSSPrimitiveValue(list->item(2))->getDoubleValue();
+        z = toCSSPrimitiveValue(list->item(3))->getDoubleValue();
+    }
+
+    TransformOperation::OperationType type = (x == 0 && y == 0 && z == 1) ? TransformOperation::Rotate : TransformOperation::Rotate3D;
+
+    return RotateTransformOperation::create(x, y, z, angle, type);
+}
+
+PassRefPtr<ScaleTransformOperation> StyleBuilderConverter::convertScale(StyleResolverState& state, CSSValue* value)
+{
+    CSSValueList* list = toCSSValueList(value);
+    ASSERT(list->length() >= 1 && list->length() <= 3);
+    double sx = toCSSPrimitiveValue(list->item(0))->getDoubleValue();
+    double sy = 1;
+    double sz = 1;
+    if (list->length() >= 2 && list->length() <= 3)
+        sy = toCSSPrimitiveValue(list->item(1))->getDoubleValue();
+    if (list->length() == 3)
+        sz = toCSSPrimitiveValue(list->item(2))->getDoubleValue();
+
+    TransformOperation::OperationType type;
+    if (sz == 1) {
+        if (sy == 1)
+            type = TransformOperation::ScaleX;
+        else
+            type = TransformOperation::Scale;
+    } else {
+        type = TransformOperation::Scale3D;
+    }
+    return ScaleTransformOperation::create(sx, sy, sz, type);
+}
+
 } // namespace blink