SVGTextChunkBuilder.cpp [plain text]
#include "config.h"
#include "SVGTextChunkBuilder.h"
#include "SVGElement.h"
#include "SVGInlineTextBox.h"
#include "SVGLengthContext.h"
#include "SVGTextFragment.h"
namespace WebCore {
SVGTextChunkBuilder::SVGTextChunkBuilder()
{
}
unsigned SVGTextChunkBuilder::totalCharacters() const
{
unsigned characters = 0;
for (const auto& chunk : m_textChunks)
characters += chunk.totalCharacters();
return characters;
}
float SVGTextChunkBuilder::totalLength() const
{
float length = 0;
for (const auto& chunk : m_textChunks)
length += chunk.totalLength();
return length;
}
float SVGTextChunkBuilder::totalAnchorShift() const
{
float anchorShift = 0;
for (const auto& chunk : m_textChunks)
anchorShift += chunk.totalAnchorShift();
return anchorShift;
}
AffineTransform SVGTextChunkBuilder::transformationForTextBox(SVGInlineTextBox* textBox) const
{
auto it = m_textBoxTransformations.find(textBox);
return it == m_textBoxTransformations.end() ? AffineTransform() : it->value;
}
void SVGTextChunkBuilder::buildTextChunks(const Vector<SVGInlineTextBox*>& lineLayoutBoxes)
{
if (lineLayoutBoxes.isEmpty())
return;
unsigned limit = lineLayoutBoxes.size();
unsigned first = limit;
for (unsigned i = 0; i < limit; ++i) {
if (!lineLayoutBoxes[i]->startsNewTextChunk())
continue;
if (first == limit)
first = i;
else {
ASSERT_WITH_SECURITY_IMPLICATION(first != i);
m_textChunks.append(SVGTextChunk(lineLayoutBoxes, first, i));
first = i;
}
}
if (first != limit)
m_textChunks.append(SVGTextChunk(lineLayoutBoxes, first, limit));
}
void SVGTextChunkBuilder::layoutTextChunks(const Vector<SVGInlineTextBox*>& lineLayoutBoxes)
{
buildTextChunks(lineLayoutBoxes);
if (m_textChunks.isEmpty())
return;
for (const auto& chunk : m_textChunks)
chunk.layout(m_textBoxTransformations);
m_textChunks.clear();
}
}