Not for review - Rebase of crrev.com/62833003

Source/core/workers/TeleportContext.cpp

+/*
+ * Copyright (C) 2014 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * 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
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "core/workers/TeleportContext.h"
+
+#include "bindings/core/v8/ExceptionState.h"
+#include "platform/TraceEvent.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/text/StringBuilder.h"
+#include "wtf/text/StringHash.h"
+
+namespace blink {
+
+namespace {
+
+static WebTeleportValue::ValueType toValueType(const String& id)
+{
+    Vector<String> components;
+    id.split(":", components);
+    if (components[1] == "transform")
+        return WebTeleportValue::ValueTypeTransform;
+    if (components[1] == "opacity")
+        return WebTeleportValue::ValueTypeOpacity;
+    if (components[1] == "scrollTop")
+        return WebTeleportValue::ValueTypeScrollTop;
+    if (components[1] == "pendingScrollDelta")
+        return WebTeleportValue::ValueTypePendingScrollDelta;
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+} // namespace
+
+// TODO
+TeleportContext::TeleportContext(const Vector<String>& propertyIds) // TODO list of inputs and outputs
+    : m_timestamp(0.f)
+{
+    TRACE_EVENT0("teleport", "TeleportContext::TeleportContext");
+    for (size_t i = 0; i < propertyIds.size(); ++i) {
+        WebTeleportValue::ValueType type = toValueType(propertyIds[i]);
+        if (type == WebTeleportValue::ValueTypeTransform)
+            m_matrices.add(propertyIds[i], MatrixValue(MatrixValue::READ_WRITE));
+        else
+            m_scalars.add(propertyIds[i], ScalarValue(ScalarValue::READ_WRITE));
+    }
+}
+
+PassRefPtrWillBeRawPtr<CSSMatrix> TeleportContext::getMatrix(const String& propertyId, ExceptionState& exceptionState) const
+{
+    TRACE_EVENT1("teleport", "TeleportContext::getMatrix", "id", propertyId.ascii());
+    MatrixValues::const_iterator iter = m_matrices.find(propertyId);
+    if (iter == m_matrices.end() || !iter->value.initialized) {
+        exceptionState.throwTypeError("Invalid property id: " + propertyId + ". Did not find matrix: " + String::number(iter == m_matrices.end()) + ". Matrix was uninitialized: " + String::number(!iter->value.initialized));
+        return nullptr;
+    } else if (!iter->value.isReadable()) {
+        exceptionState.throwTypeError("Property is not readable: " + propertyId);
+        return nullptr;
+    }
+    return iter->value.value;
+}
+
+void TeleportContext::setMatrix(const String& propertyId, PassRefPtrWillBeRawPtr<CSSMatrix> value, ExceptionState& exceptionState)
+{
+    TRACE_EVENT1("teleport", "TeleportContext::setMatrix", "id", propertyId.ascii());
+
+    MatrixValues::const_iterator iter = m_matrices.find(propertyId);
+    if (iter == m_matrices.end()) {
+        exceptionState.throwTypeError("Invalid property id: " + propertyId);
+        return;
+    } else if (!iter->value.isWritable()) {
+        exceptionState.throwTypeError("Property is not writable: " + propertyId);
+        return;
+    }
+
+    MatrixValue matrixValue;
+    matrixValue.initialized = true;
+    matrixValue.modified = true;
+    matrixValue.value = value;
+    matrixValue.mode = iter->value.mode;
+    matrixValue.layer_id = iter->value.layer_id;
+
+    m_matrices.set(propertyId, matrixValue);
+}
+
+double TeleportContext::getScalar(const String& propertyId, ExceptionState& exceptionState) const
+{
+    TRACE_EVENT1("teleport", "TeleportContext::getScalar", "id", propertyId.ascii());
+    ScalarValues::const_iterator iter = m_scalars.find(propertyId);
+    if (iter == m_scalars.end() || !iter->value.initialized) {
+        exceptionState.throwTypeError("Invalid property id: " + propertyId);
+        return 0.0;
+    } else if (!iter->value.isReadable()) {
+        exceptionState.throwTypeError("Property is not readable: " + propertyId);
+        return 0.0;
+    }
+    return iter->value.value;
+}
+
+void TeleportContext::setScalar(const String& propertyId, double value, ExceptionState& exceptionState)
+{
+    TRACE_EVENT1("teleport", "TeleportContext::setScalar", "id", propertyId.ascii());
+    ScalarValue scalarValue;
+    scalarValue.initialized = true;
+    scalarValue.modified = true;
+    scalarValue.value = value;
+
+    ScalarValues::const_iterator iter = m_scalars.find(propertyId);
+    if (iter == m_scalars.end()) {
+        exceptionState.throwTypeError("Invalid property id: " + propertyId);
+        return;
+    } else if (!iter->value.isWritable()) {
+        exceptionState.throwTypeError("Property is not writable: " + propertyId);
+        return;
+    }
+
+    scalarValue.layer_id = iter->value.layer_id;
+
+    m_scalars.set(propertyId, scalarValue);
+}
+
+static String toString(const TransformationMatrix& matrix)
+{
+    StringBuilder builder;
+    builder.append("matrix(");
+    builder.append(String::number(matrix.m11()) + ", ");
+    builder.append(String::number(matrix.m12()) + ", ");
+    builder.append(String::number(matrix.m13()) + ", ");
+    builder.append(String::number(matrix.m14()) + ", ");
+    builder.append(String::number(matrix.m21()) + ", ");
+    builder.append(String::number(matrix.m22()) + ", ");
+    builder.append(String::number(matrix.m23()) + ", ");
+    builder.append(String::number(matrix.m24()) + ", ");
+    builder.append(String::number(matrix.m31()) + ", ");
+    builder.append(String::number(matrix.m32()) + ", ");
+    builder.append(String::number(matrix.m33()) + ", ");
+    builder.append(String::number(matrix.m34()) + ", ");
+    builder.append(String::number(matrix.m41()) + ", ");
+    builder.append(String::number(matrix.m42()) + ", ");
+    builder.append(String::number(matrix.m43()) + ", ");
+    builder.append(String::number(matrix.m44()) + ")");
+    return builder.toString();
+}
+
+PassOwnPtr<WebTeleportValues> TeleportContext::getWebTeleportValues() const
+{
+    size_t numValues = m_scalars.size() + m_matrices.size();
+
+    TRACE_EVENT1("teleport", "TeleportContext::getWebTeleportValues", "count", static_cast<int>(numValues));
+    OwnPtr<WebTeleportValues> values(adoptPtr(new WebTeleportValues(numValues)));
+    size_t i = 0;
+    for (ScalarValues::const_iterator it = m_scalars.begin(); it != m_scalars.end(); ++it) {
+        WebTeleportValue value;
+        value.id = it->key;
+        value.layer_id = it->value.layer_id;
+        value.type = toValueType(it->key);
+        value.value.scalar = it->value.value;
+        value.initialized = it->value.initialized;
+        value.modified = it->value.modified;
+        (*values)[i++] = value;
+    }
+
+    for (MatrixValues::const_iterator it = m_matrices.begin(); it != m_matrices.end(); ++it) {
+        WebTeleportValue value;
+        value.id = it->key;
+        value.layer_id = it->value.layer_id;
+        value.type = toValueType(it->key);
+        value.initialized = it->value.initialized && it->value.value;
+        value.modified = it->value.modified;
+        if (value.initialized) {
+            const TransformationMatrix& matrix = it->value.value->transform();
+            TRACE_EVENT1("teleport", "TeleportContext::getWebTeleportValues getValue", "value", toString(matrix).ascii());
+            value.value.matrix[0] = matrix.m11();
+            value.value.matrix[1] = matrix.m21();
+            value.value.matrix[2] = matrix.m31();
+            value.value.matrix[3] = matrix.m41();
+            value.value.matrix[4] = matrix.m12();
+            value.value.matrix[5] = matrix.m22();
+            value.value.matrix[6] = matrix.m32();
+            value.value.matrix[7] = matrix.m42();
+            value.value.matrix[8] = matrix.m13();
+            value.value.matrix[9] = matrix.m23();
+            value.value.matrix[10] = matrix.m33();
+            value.value.matrix[11] = matrix.m43();
+            value.value.matrix[12] = matrix.m14();
+            value.value.matrix[13] = matrix.m24();
+            value.value.matrix[14] = matrix.m34();
+            value.value.matrix[15] = matrix.m44();
+        }
+        (*values)[i++] = value;
+    }
+
+    return values.release();
+}
+
+void TeleportContext::setWebTeleportValues(const WebTeleportValues& values)
+{
+    TRACE_EVENT1("teleport", "TeleportContext::setWebTeleportValues", "count", static_cast<int>(values.size()));
+    for (size_t i = 0; i < values.size(); ++i) {
+        const WebTeleportValue& value = values[i];
+        switch (value.type) {
+        case WebTeleportValue::ValueTypeTransform: {
+            TransformationMatrix matrix(
+                value.value.matrix[0],
+                value.value.matrix[4],
+                value.value.matrix[8],
+                value.value.matrix[12],
+                value.value.matrix[1],
+                value.value.matrix[5],
+                value.value.matrix[9],
+                value.value.matrix[13],
+                value.value.matrix[2],
+                value.value.matrix[6],
+                value.value.matrix[10],
+                value.value.matrix[14],
+                value.value.matrix[3],
+                value.value.matrix[7],
+                value.value.matrix[11],
+                value.value.matrix[15]);
+            MatrixValue matrixValue;
+            matrixValue.initialized = true;
+            matrixValue.value = CSSMatrix::create(matrix);
+            matrixValue.layer_id = value.layer_id;
+            m_matrices.set(value.id, matrixValue);
+            TRACE_EVENT1("teleport", "TeleportContext::setWebTeleportValues setValue", "value", toString(matrix).ascii());
+            break;
+        }
+        case WebTeleportValue::ValueTypeScrollTop:
+        case WebTeleportValue::ValueTypePendingScrollDelta:
+        case WebTeleportValue::ValueTypeOpacity: {
+            ScalarValue scalarValue;
+            scalarValue.initialized = true;
+            scalarValue.value = value.value.scalar;
+            scalarValue.layer_id = value.layer_id;
+            m_scalars.set(value.id, scalarValue);
+            break;
+        }
+        case WebTeleportValue::ValueTypeTimestamp: {
+            m_timestamp = value.value.scalar;
+            break;
+        }
+        case WebTeleportValue::ValueTypeError: {
+            break;
+        }
+        default:
+            ASSERT_NOT_REACHED();
+            break;
+        }
+    }
+}
+
+} // namespace blink