Fix bugs generating PDF on Cocoa

Provide real implementations of:
    properties(), faceId() and getUnscaledGlyph

Task-number: QTBUG-10094
Change-Id: Ib84a7a5c9e29e4d634b47bc2856787b2482048da
(cherry picked from qtbase/517fb9026896f7ac20376f253babae5a7c57721d)
Reviewed-by: Morten Johan Sørvig <[email protected]>

Author: zakalawe

src/gui/text/qfontengine_coretext.mm

@@ -831,7 +831,13 @@ static void convertCGPathToQPainterPath(void *info, const CGPathElement *element
 
 QFontEngine::FaceId QCoreTextFontEngine::faceId() const
 {
-    return QFontEngine::FaceId();
+    FaceId result;
+    result.index = 0;
+
+    QCFString name = CTFontCopyName(ctfont, kCTFontUniqueNameKey);
+    result.filename = QCFString::toQString(name).toUtf8();
+
+    return result;
 }
 
 bool QCoreTextFontEngine::canRender(const QChar *string, int len)
@@ -856,9 +862,26 @@ static void convertCGPathToQPainterPath(void *info, const CGPathElement *element
     return true;
 }
 
-void QCoreTextFontEngine::getUnscaledGlyph(glyph_t, QPainterPath *, glyph_metrics_t *)
+void QCoreTextFontEngine::getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metric)
 {
-    // ###
+    CGAffineTransform cgMatrix = CGAffineTransformIdentity;
+
+    qreal emSquare = CTFontGetUnitsPerEm(ctfont);
+    qreal scale = emSquare / CTFontGetSize(ctfont);
+    cgMatrix = CGAffineTransformScale(cgMatrix, scale, -scale);
+
+    QCFType<CGPathRef> cgpath = CTFontCreatePathForGlyph(ctfont, (CGGlyph) glyph, &cgMatrix);
+    ConvertPathInfo info(path, QPointF(0,0));
+    CGPathApply(cgpath, &info, convertCGPathToQPainterPath);
+
+    *metric = boundingBox(glyph);
+    // scale the metrics too
+    metric->width  = QFixed::fromReal(metric->width.toReal() * scale);
+    metric->height = QFixed::fromReal(metric->height.toReal() * scale);
+    metric->x      = QFixed::fromReal(metric->x.toReal() * scale);
+    metric->y      = QFixed::fromReal(metric->y.toReal() * scale);
+    metric->xoff   = QFixed::fromReal(metric->xoff.toReal() * scale);
+    metric->yoff   = QFixed::fromReal(metric->yoff.toReal() * scale);
 }
 
 QFixed QCoreTextFontEngine::emSquareSize() const
@@ -875,6 +898,45 @@ static void convertCGPathToQPainterPath(void *info, const CGPathElement *element
     return new QCoreTextFontEngine(cgFont, newFontDef);
 }
 
+QFontEngine::Properties QCoreTextFontEngine::properties() const
+{
+    Properties result;
+
+    QCFString psName, copyright;
+    psName = CTFontCopyPostScriptName(ctfont);
+    copyright = CTFontCopyName(ctfont, kCTFontCopyrightNameKey);
+    result.postscriptName = QCFString::toQString(psName).toUtf8();
+    result.copyright = QCFString::toQString(copyright).toUtf8();
+
+    qreal emSquare = CTFontGetUnitsPerEm(ctfont);
+    qreal scale = emSquare / CTFontGetSize(ctfont);
+
+    CGRect cgRect = CTFontGetBoundingBox(ctfont);
+    result.boundingBox = QRectF(cgRect.origin.x * scale,
+                                -CTFontGetAscent(ctfont) * scale,
+                                cgRect.size.width * scale,
+                                cgRect.size.height * scale);
+
+    result.emSquare = emSquareSize();
+    result.ascent = QFixed::fromReal(CTFontGetAscent(ctfont) * scale);
+    result.descent = QFixed::fromReal(CTFontGetDescent(ctfont) * scale);
+    result.leading = QFixed::fromReal(CTFontGetLeading(ctfont) * scale);
+    result.italicAngle = QFixed::fromReal(CTFontGetSlantAngle(ctfont));
+    result.capHeight = QFixed::fromReal(CTFontGetCapHeight(ctfont) * scale);
+    result.lineWidth = QFixed::fromReal(CTFontGetUnderlineThickness(ctfont) * scale);
+
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+        result.ascent = result.ascent.round();
+        result.descent = result.descent.round();
+        result.leading = result.leading.round();
+        result.italicAngle = result.italicAngle.round();
+        result.capHeight = result.capHeight.round();
+        result.lineWidth = result.lineWidth.round();
+    }
+
+    return result;
+}
+
 QT_END_NAMESPACE
 
 #endif// !defined(Q_WS_MAC) || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)

src/gui/text/qfontengine_coretext_p.h

@@ -103,6 +103,8 @@ class QCoreTextFontEngine : public QFontEngine
 
     virtual QFontEngine *cloneWithSize(qreal pixelSize) const;
 
+    virtual QFontEngine::Properties properties() const;
+
 private:
     friend class QRawFontPrivate;