1 files changed, 93 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/svg/SVGTextChunk.cpp b/Source/WebCore/rendering/svg/SVGTextChunk.cpp
new file mode 100644
index 0000000..5dea6ad
--- /dev/null
+++ b/Source/WebCore/rendering/svg/SVGTextChunk.cpp
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+/*
+ * Copyright (C) Research In Motion Limited 2010. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+
+#if ENABLE(SVG)
+#include "SVGTextChunk.h"
+
+#include "SVGInlineTextBox.h"
+#include "SVGTextFragment.h"
+
+namespace WebCore {
+
+SVGTextChunk::SVGTextChunk(bool isVerticalText, ETextAnchor textAnchor, SVGTextContentElement::SVGLengthAdjustType lengthAdjust, float desiredTextLength)
+    : m_isVerticalText(isVerticalText)
+    , m_textAnchor(textAnchor)
+    , m_lengthAdjust(lengthAdjust)
+    , m_desiredTextLength(desiredTextLength)
+{
+}
+
+void SVGTextChunk::calculateLength(float& length, unsigned& characters) const
+{
+    SVGTextFragment* lastFragment = 0;
+
+    unsigned boxCount = m_boxes.size();
+    for (unsigned boxPosition = 0; boxPosition < boxCount; ++boxPosition) {
+        SVGInlineTextBox* textBox = m_boxes.at(boxPosition);
+        Vector<SVGTextFragment>& fragments = textBox->textFragments();
+
+        unsigned size = fragments.size();
+        if (!size)
+            continue;
+
+        for (unsigned i = 0; i < size; ++i) {
+            SVGTextFragment& fragment = fragments.at(i);
+            characters += fragment.length;
+
+            if (m_isVerticalText)
+                length += fragment.height;
+            else
+                length += fragment.width;
+
+            if (!lastFragment) {
+                lastFragment = &fragment;
+                continue;
+            }
+
+            // Resepect gap between chunks.
+            if (m_isVerticalText)
+                 length += fragment.y - (lastFragment->y + lastFragment->height);
+            else
+                 length += fragment.x - (lastFragment->x + lastFragment->width);
+
+            lastFragment = &fragment;
+        }
+    }
+}
+
+float SVGTextChunk::calculateTextAnchorShift(float length) const
+{
+    switch (m_textAnchor) {
+    case TA_START:
+        return 0;
+    case TA_MIDDLE:
+        return -length / 2;
+    case TA_END:
+        return -length;
+    };
+
+    ASSERT_NOT_REACHED();
+    return 0;
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG)