//SAMSUNG_THAI_EDITING_FIX >>
FloatRect Font::selectionRectForComplexText(const TextRun& run,
const IntPoint& point, int h, int from, int to) const
{
SkPaint paint;
SkPaint::FontMetrics metrics;
float beforeWidth = 0.0f ;
float afterWidth = 0.0f ;
primaryFont()->platformData().setupPaint(&paint);
size_t length = from ;
if (length > 0) {
beforeWidth = paint.measureText(run.characters(), length << 1);
}
length = to ;
if (length > 0) {
afterWidth = paint.measureText(run.characters(), length << 1);
}
return FloatRect(point.x() + floorf(beforeWidth),
point.y(),
roundf(afterWidth) - floorf(beforeWidth),
roundf(SkScalarToFloat(h)));
}
FloatRect Font::selectionRectForComplexText(const TextRun& run,
const IntPoint& point, int h, int from, int to) const
{
SkPaint paint;
SkScalar width, left;
SkPaint::FontMetrics metrics;
primaryFont()->platformData().setupPaint(&paint);
SkScalar spacing = paint.getFontMetrics(&metrics);
float beforeWidth = SkScalarToFloat(paint.measureText(run.characters(), from << 1));
float afterWidth = SkScalarToFloat(paint.measureText(run.characters(), to << 1));
if (run.rtl()) {
float totalWidth = SkScalarToFloat(paint.measureText(run.characters(), run.length() << 1));
return FloatRect(point.x() + floorf(totalWidth - afterWidth),
point.y(),
roundf(totalWidth - beforeWidth) - floorf(totalWidth - afterWidth),
//roundf(SkScalarToFloat(spacing))); // Don't compute rect height, but use h.
h);
} else {
return FloatRect(point.x() + floorf(beforeWidth),
point.y(),
roundf(afterWidth) - floorf(beforeWidth),
//roundf(SkScalarToFloat(spacing))); // Don't compute rect height, but use h.
h);
}
}
float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFontData*>* /* fallbackFonts */) const
{
void* font = 0;
float w = 0.f;
const UChar* str = 0;
UChar c = 0;
const SimpleFontData* sfont = primaryFont();
float scale = 0;
int i, len;
if (!sfont) return 0.f;
len = run.length();
if (!len) return 0.f;
str = run.characters();
font = sfont->platformData().Font();
if (!font) return 0.f;
scale = sfont->platformData().scale();
for (i=0; i<len; i++) {
c = fixedChar(str[i]);
if (!c) continue;
w += (float)wkcFontGetCharWidthPeer(font, c) * scale;
}
return w;
}
int Font::offsetForPositionForComplexText(const TextRun& run, int x,
bool includePartialGlyphs) const
{
SkPaint paint;
int count = run.length();
SkAutoSTMalloc<64, SkScalar> storage(count);
SkScalar* widths = storage.get();
SkAutoSTMalloc<64, int> storageClusterIndex(count);
int* clusterIndex = storageClusterIndex.get();
primaryFont()->platformData().setupPaint(&paint);
//count = paint.getTextWidths(run.characters(), count << 1, widths);
count = paint.getComplexTextWidths(run.characters(), count << 1, widths, clusterIndex);
if (count > 0)
{
SkScalar pos = 0;
for (int i = 0; i < count; i++)
{
if (x < SkScalarRound(pos + SkScalarHalf(widths[i])))
return clusterIndex[i];
pos += widths[i];
}
}
return run.length();
}
int Font::offsetForPositionForSimpleText(const TextRun& run, int position, bool includePartialGlyphs) const
{
#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
String sanitized = Font::normalizeSpaces(String(run.characters(), run.length()));
QString string = fromRawDataWithoutRef(sanitized);
QFontMetrics fm(font());
float delta = (float)position;
int curPos = 0;
do {
float charWidth = fm.width(string[curPos]);
delta -= charWidth;
if (includePartialGlyphs) {
if (delta + charWidth / 2 <= 0)
break;
} else {
if (delta + charWidth <= 0)
break;
}
} while (++curPos < string.size());
return curPos;
#else
Q_ASSERT(false);
return 0;
#endif
}
int Font::offsetForPositionForComplexText(const TextRun& run, float xFloat, bool includePartialGlyphs) const
{
#if USE(FREETYPE)
if (!primaryFont()->platformData().m_pattern)
return offsetForPositionForSimpleText(run, xFloat, includePartialGlyphs);
#endif
// FIXME: This truncation is not a problem for HTML, but only affects SVG, which passes floating-point numbers
// to Font::offsetForPosition(). Bug http://webkit.org/b/40673 tracks fixing this problem.
int x = static_cast<int>(xFloat);
PangoLayout* layout = getDefaultPangoLayout(run);
setPangoAttributes(this, run, layout);
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
pango_layout_set_text(layout, utf8, -1);
int index, trailing;
pango_layout_xy_to_index(layout, x * PANGO_SCALE, 1, &index, &trailing);
glong offset = g_utf8_pointer_to_offset(utf8, utf8 + index);
if (includePartialGlyphs)
offset += trailing;
g_free(utf8);
g_object_unref(layout);
return offset;
}
TextRunWalker(const TextRun& run, unsigned startingX, const Font* font)
: m_font(font)
, m_run(run)
, m_startingX(startingX)
, m_offsetX(m_startingX)
, m_iterateBackwards(run.rtl())
{
memset(&m_item, 0, sizeof(m_item));
// We cannot know, ahead of time, how many glyphs a given script run
// will produce. We take a guess that script runs will not produce more
// than twice as many glyphs as there are code points and fallback if
// we find that we are wrong.
m_maxGlyphs = run.length() * 2;
createGlyphArrays();
m_item.log_clusters = new unsigned short[run.length()];
m_item.face = 0;
m_item.font = allocHarfbuzzFont();
m_item.string = run.characters();
m_item.stringLength = run.length();
m_item.item.bidiLevel = run.rtl();
reset();
}
void Font::drawComplexText(GraphicsContext* context, const TextRun& run, const TextStyle& style, const FloatPoint& point, int from, int to) const
{
cairo_t* cr = context->platformContext();
cairo_save(cr);
PangoLayout* layout = pango_cairo_create_layout(cr);
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), from, run.length());
pango_layout_set_text(layout, utf8, -1);
setPangoAttributes(this, run, layout, style.rtl());
// Set the text color to use for drawing.
float red, green, blue, alpha;
Color penColor = context->fillColor();
penColor.getRGBA(red, green, blue, alpha);
cairo_set_source_rgba(cr, red, green, blue, alpha);
cairo_move_to(cr, point.x(), point.y());
PangoLayoutLine* layoutLine = pango_layout_get_line(layout, 0);
pango_cairo_show_layout_line(cr, layoutLine);
g_free(utf8);
g_object_unref(layout);
cairo_restore(cr);
}
void Font::drawComplexText(GraphicsContext* context, const TextRun& run, const FloatPoint& point, int from, int to) const
{
#if defined(USE_FREETYPE)
if (!primaryFont()->platformData().m_pattern) {
drawSimpleText(context, run, point, from, to);
return;
}
#endif
cairo_t* cr = context->platformContext();
PangoLayout* layout = pango_cairo_create_layout(cr);
setPangoAttributes(this, run, layout);
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
pango_layout_set_text(layout, utf8, -1);
// Our layouts are single line
PangoLayoutLine* layoutLine = pango_layout_get_line_readonly(layout, 0);
// Get the region where this text will be laid out. We will use it to clip
// the Cairo context, for when we are only painting part of the text run and
// to calculate the size of the shadow buffer.
PangoRegionType partialRegion = 0;
char* start = g_utf8_offset_to_pointer(utf8, from);
char* end = g_utf8_offset_to_pointer(start, to - from);
int ranges[] = {start - utf8, end - utf8};
partialRegion = gdk_pango_layout_line_get_clip_region(layoutLine, 0, 0, ranges, 1);
drawGlyphsShadow(context, cr, point, layoutLine, partialRegion);
cairo_save(cr);
cairo_translate(cr, point.x(), point.y());
float red, green, blue, alpha;
context->fillColor().getRGBA(red, green, blue, alpha);
cairo_set_source_rgba(cr, red, green, blue, alpha);
gdk_cairo_region(cr, partialRegion);
cairo_clip(cr);
pango_cairo_show_layout_line(cr, layoutLine);
if (context->textDrawingMode() & TextModeStroke) {
Color strokeColor = context->strokeColor();
strokeColor.getRGBA(red, green, blue, alpha);
cairo_set_source_rgba(cr, red, green, blue, alpha);
pango_cairo_layout_line_path(cr, layoutLine);
cairo_set_line_width(cr, context->strokeThickness());
cairo_stroke(cr);
}
// Pango sometimes leaves behind paths we don't want
cairo_new_path(cr);
destroyPangoRegion(partialRegion);
g_free(utf8);
g_object_unref(layout);
cairo_restore(cr);
}
void Font::drawComplexText(GraphicsContext* ctx, const TextRun& run, const TextStyle&, const FloatPoint& point) const
{
// FIXME: style, run.from()/length() cut-off
ctx->platformContext()->drawText(point,
QString::fromRawData(
reinterpret_cast<const QChar*>(
run.characters() + run.from()), run.length()));
}
int Font::offsetForPositionForComplexText(const TextRun& run, float position, bool) const
{
String sanitized = Font::normalizeSpaces(run.characters(), run.length());
QString string = fromRawDataWithoutRef(sanitized);
QTextLayout layout(string, font());
QTextLine line = setupLayout(&layout, run);
return line.xToCursor(position);
}
FloatRect Font::selectionRectForSimpleText(const TextRun& run, const FloatPoint& pt, int h, int from, int to) const
{
String sanitized = Font::normalizeSpaces(run.characters(), run.length());
QString wholeText = fromRawDataWithoutRef(sanitized);
QString selectedText = fromRawDataWithoutRef(sanitized, from, qMin(to - from, wholeText.length() - from));
int startX = QFontMetrics(font()).width(wholeText, from, Qt::TextBypassShaping);
int width = QFontMetrics(font()).width(selectedText, -1, Qt::TextBypassShaping);
return FloatRect(pt.x() + startX, pt.y(), width, h);
}
float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFontData*>*) const
{
SkPaint paint;
primaryFont()->platformData().setupPaint(&paint);
//printf("--------- complext measure %d chars\n", run.to() - run.from());
SkScalar width = paint.measureText(run.characters(), run.length() << 1);
return SkScalarToFloat(width);
}
static QString qstring(const TextRun& run)
{
QString string((QChar *)run.characters(), run.length());
QChar *uc = string.data();
for (int i = 0; i < string.length(); ++i) {
if (Font::treatAsSpace(uc[i].unicode()))
uc[i] = 0x20;
else if (Font::treatAsZeroWidthSpace(uc[i].unicode()))
uc[i] = 0x200c;
}
return string;
}
static float getWidth(PangoLayout *layout, const TextRun& run, int from, int to)
{
int layoutWidth;
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), from, to);
pango_layout_set_text(layout, utf8, -1);
g_free(utf8);
pango_layout_get_size(layout, &layoutWidth, 0);
float width = (float)layoutWidth / (double)PANGO_SCALE;
return width;
}
FloatRect Font::selectionRectForComplexText(const TextRun& run, const FloatPoint& pt, int h, int from, int to) const
{
String sanitized = Font::normalizeSpaces(run.characters(), run.length());
QString string = fromRawDataWithoutRef(sanitized);
QTextLayout layout(string, font());
QTextLine line = setupLayout(&layout, run);
float x1 = line.cursorToX(from);
float x2 = line.cursorToX(to);
if (x2 < x1)
qSwap(x1, x2);
return FloatRect(pt.x() + x1, pt.y(), x2 - x1, h);
}
FloatRect Font::selectionRectForSimpleText(const TextRun& run, const IntPoint& pt, int h, int from, int to) const
{
#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
String sanitized = Font::normalizeSpaces(String(run.characters(), run.length()));
QString wholeText = fromRawDataWithoutRef(sanitized);
QString selectedText = fromRawDataWithoutRef(sanitized, from, to - from);
int startX = QFontMetrics(font()).width(wholeText, from, Qt::TextBypassShaping);
int width = QFontMetrics(font()).width(selectedText, -1, Qt::TextBypassShaping);
return FloatRect(pt.x() + startX, pt.y(), width, h);
#else
Q_ASSERT(false);
return FloatRect();
#endif
}
SVGTextMetrics::SVGTextMetrics(const Font& font, const TextRun& run, unsigned position, unsigned textLength)
: m_width(0)
, m_height(0)
, m_length(0)
{
int extraCharsAvailable = textLength - (position + run.length());
int length = 0;
m_width = font.floatWidth(run, extraCharsAvailable, length, m_glyph.name);
m_height = font.fontMetrics().height();
m_glyph.unicodeString = String(run.characters(), length);
m_glyph.isValid = true;
ASSERT(length >= 0);
m_length = static_cast<unsigned>(length);
}
int Font::offsetForPositionForComplexText(const TextRun& run, const TextStyle& style, int x, bool includePartialGlyphs) const
{
PangoLayout* layout = getDefaultPangoLayout(run);
setPangoAttributes(this, run, layout, style.rtl());
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
pango_layout_set_text(layout, utf8, -1);
int index, trailing;
pango_layout_xy_to_index(layout, x * PANGO_SCALE, 1, &index, &trailing);
glong offset = g_utf8_pointer_to_offset(utf8, utf8 + index);
g_object_unref(layout);
g_free(utf8);
return offset;
}
FloatRect Font::selectionRectForComplexText(const TextRun& run, const IntPoint& point, int h, int from, int to) const
{
void* font = 0;
const UChar* str = 0;
const SimpleFontData* sfont = 0;
int i, len;
float x0,x1,x2;
float scale = 0;
UChar c = 0;
len = run.length();
if (!len) return FloatRect();
if (from>=len || to>len) return FloatRect();
if (from>=to) return FloatRect();
if (from<0) from = 0;
if (to>len) to = len;
str = run.characters();
sfont = primaryFont();
if (!sfont) return FloatRect();
font = sfont->platformData().Font();
if (!font) return FloatRect();
scale = sfont->platformData().scale();
x0=x1=x2=0;
for (i=0; i<from; i++) {
c = fixedChar(str[i]);
if (!c) continue;
x0 += ((float)wkcFontGetCharWidthPeer(font, c) * scale);
}
for (i=from; i<to; i++) {
c = fixedChar(str[i]);
if (!c) continue;
x1 += ((float)wkcFontGetCharWidthPeer(font, c) * scale);
}
for (i=to; i<len; i++) {
c = fixedChar(str[i]);
if (!c) continue;
x2 += ((float)wkcFontGetCharWidthPeer(font, c) * scale);
}
if (run.rtl()) {
return FloatRect(point.x() + x2, point.y(), x1, h);
} else {
return FloatRect(point.x() + x0, point.y(), x1, h);
}
}
float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFontData*>*) const
{
#if 0
SkPaint paint;
primaryFont()->platformData().setupPaint(&paint);
//printf("--------- complext measure %d chars\n", run.to() - run.from());
SkScalar width = paint.measureText(run.characters(), run.length() << 1);
return SkScalarToFloat(width);
#else
WidthIterator it(this, run);
it.advance(run.length());
return SkScalarToFloat(it.m_runWidthSoFar);
#endif
}
void Font::drawComplexText(GraphicsContext* gc, TextRun const& run,
FloatPoint const& point, int, int) const
{
SkCanvas* canvas = gc->platformContext()->mCanvas;
SkPaint paint;
if (!setupForText(&paint, gc, primaryFont())) {
return;
}
// go to chars, instead of glyphs, which was set by setupForText()
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
canvas->drawText(run.characters(), run.length() << 1,
SkFloatToScalar(point.x()), SkFloatToScalar(point.y()),
paint);
}
FloatRect Font::selectionRectForComplexText(const TextRun& run,
const IntPoint& point, int h, int, int) const
{
SkPaint paint;
SkScalar width, left;
SkPaint::FontMetrics metrics;
primaryFont()->platformData().setupPaint(&paint);
width = paint.measureText(run.characters(), run.length() << 1);
SkScalar spacing = paint.getFontMetrics(&metrics);
return FloatRect(point.x(),
point.y() - floorf(SkScalarToFloat(-metrics.fAscent)),
roundf(SkScalarToFloat(width)),
roundf(SkScalarToFloat(spacing)));
}
float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFontData*>*, GlyphOverflow*) const
{
if (!run.length())
return 0;
if (run.length() == 1 && treatAsSpace(run[0]))
return QFontMetrics(font()).width(space) + run.padding();
String sanitized = Font::normalizeSpaces(String(run.characters(), run.length()));
QString string = fromRawDataWithoutRef(sanitized);
int w = QFontMetrics(font()).width(string);
// WebKit expects us to ignore word spacing on the first character (as opposed to what Qt does)
if (treatAsSpace(run[0]))
w -= m_wordSpacing;
return w + run.padding();
}
float Font::floatWidthForComplexText(const TextRun& run) const
{
if (run.length() == 0)
return 0.0f;
PangoLayout* layout = getDefaultPangoLayout(run);
setPangoAttributes(this, run, layout);
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
pango_layout_set_text(layout, utf8, -1);
int width;
pango_layout_get_pixel_size(layout, &width, 0);
g_free(utf8);
g_object_unref(layout);
return width;
}
float Font::floatWidthForComplexText(const TextRun& run, const TextStyle& style) const
{
if (run.length() == 0)
return 0.0f;
PangoLayout* layout = getDefaultPangoLayout(run);
setPangoAttributes(this, run, layout, style.rtl());
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
pango_layout_set_text(layout, utf8, -1);
g_free(utf8);
int layoutWidth;
pango_layout_get_size(layout, &layoutWidth, 0);
float width = (float)layoutWidth / (double)PANGO_SCALE;
g_object_unref(layout);
return width;
}
float Font::floatWidthForSimpleText(const TextRun& run, GlyphBuffer* glyphBuffer, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow* glyphOverflow) const
{
if (!primaryFont()->platformData().size())
return 0;
if (!run.length())
return 0;
String sanitized = Font::normalizeSpaces(run.characters(), run.length());
QString string = fromRawDataWithoutRef(sanitized);
int w = QFontMetrics(font()).width(string, -1, Qt::TextBypassShaping);
// WebKit expects us to ignore word spacing on the first character (as opposed to what Qt does)
if (treatAsSpace(run[0]))
w -= m_wordSpacing;
return w + run.expansion();
}
FloatRect Font::selectionRectForComplexText(const TextRun& run, const FloatPoint& point, int h, int from, int to) const
{
#if USE(FREETYPE)
if (!primaryFont()->platformData().m_pattern)
return selectionRectForSimpleText(run, point, h, from, to);
#endif
PangoLayout* layout = getDefaultPangoLayout(run);
setPangoAttributes(this, run, layout);
gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
pango_layout_set_text(layout, utf8, -1);
char* start = g_utf8_offset_to_pointer(utf8, from);
char* end = g_utf8_offset_to_pointer(start, to - from);
if (run.ltr()) {
from = start - utf8;
to = end - utf8;
} else {
from = end - utf8;
to = start - utf8;
}
PangoLayoutLine* layoutLine = pango_layout_get_line_readonly(layout, 0);
int xPos;
xPos = 0;
if (from < layoutLine->length)
pango_layout_line_index_to_x(layoutLine, from, FALSE, &xPos);
float beforeWidth = PANGO_PIXELS_FLOOR(xPos);
xPos = 0;
if (run.ltr() || to < layoutLine->length)
pango_layout_line_index_to_x(layoutLine, to, FALSE, &xPos);
float afterWidth = PANGO_PIXELS(xPos);
g_free(utf8);
g_object_unref(layout);
return FloatRect(point.x() + beforeWidth, point.y(), afterWidth - beforeWidth, h);
}
SVGTextMetrics::SVGTextMetrics(RenderSVGInlineText* textRenderer, const TextRun& run)
{
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer->scaledFont();
int length = 0;
// Calculate width/height using the scaled font, divide this result by the scalingFactor afterwards.
m_width = scaledFont.width(run, length, m_glyph.name) / scalingFactor;
m_height = scaledFont.fontMetrics().floatHeight() / scalingFactor;
m_glyph.unicodeString = String(run.characters(), length);
m_glyph.isValid = true;
ASSERT(length >= 0);
m_length = static_cast<unsigned>(length);
}
float Font::floatWidthForSimpleText(const TextRun& run, GlyphBuffer* glyphBuffer, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow* glyphOverflow) const
{
#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
if (!run.length())
return 0;
String sanitized = Font::normalizeSpaces(String(run.characters(), run.length()));
QString string = fromRawDataWithoutRef(sanitized);
int w = QFontMetrics(font()).width(string, -1, Qt::TextBypassShaping);
// WebKit expects us to ignore word spacing on the first character (as opposed to what Qt does)
if (treatAsSpace(run[0]))
w -= m_wordSpacing;
return w + run.padding();
#else
Q_ASSERT(false);
return 0.0f;
#endif
}
