Attachment 140963 Details for Bug 107151 – Add FreeText font color and DA string creation and parsing in the Poppler core. Add new methods TextAnnotation::textColor and TextAnnotation::setTextColor to adjust the text color of FreeText annot.

[patch] Add FreeText font color and DA string creation and parsing in the Poppler core. Add new methods TextAnnotation::textColor and TextAnnotation::setTextColor to adjust the text color of FreeText annot.

0001-Add-FreeText-font-color-in-Poppler.patch (text/plain), 15.73 KB, created by Dileep Sankhla on 2018-08-04 10:35:57 UTC

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Creator: Dileep Sankhla

Created: 2018-08-04 10:35:57 UTC

Size: 15.73 KB

patch

obsolete

>From 8865f9d68f7ba1b52f3fbbcf42000bfadc8eebd4 Mon Sep 17 00:00:00 2001
>From: Dileep Sankhla <sankhla.dileep96@gmail.com>
>Date: Sat, 4 Aug 2018 15:48:45 +0530
>Subject: [PATCH] Add FreeText font color in Poppler
>
>Add new public methods TextAnnotation::textColor and
>TextAnnotation::setTextColor, to adjust the text color of FreeText
>annotations. We also shift the responsibility for createing and parsing
>DA strings out of Qt5 frontend and into poppler core.
>
>Co-authored-by: Tobias Deiminger <haxtibal@posteo.de>
>---
> poppler/Annot.cc                    |  77 +++++++++++++++++----
> poppler/Annot.h                     |  30 +++++++--
> qt5/src/poppler-annotation-helper.h |   2 +-
> qt5/src/poppler-annotation.cc       | 100 ++++++++++++++++------------
> qt5/src/poppler-annotation.h        |   2 +
> 5 files changed, 153 insertions(+), 58 deletions(-)
>
>diff --git a/poppler/Annot.cc b/poppler/Annot.cc
>index d37824c1..73536861 100644
>--- a/poppler/Annot.cc
>+++ b/poppler/Annot.cc
>@@ -791,6 +791,26 @@ Object AnnotColor::writeToObject(XRef *xref) const {
>   }
> }
> 
>+//------------------------------------------------------------------------
>+// DefaultAppearance
>+//------------------------------------------------------------------------
>+
>+DefaultAppearance::DefaultAppearance()
>+ : fontPtSize(0), fontColor(nullptr) {
>+  DefaultAppearance::fontTag = new GooString();
>+}
>+
>+DefaultAppearance::DefaultAppearance(const GooString &fontTag, int fontPtSize, AnnotColor *fontColor)
>+ : fontPtSize(fontPtSize), fontColor(fontColor) {
>+  DefaultAppearance::fontTag = fontTag.copy();
>+}
>+
>+DefaultAppearance::~DefaultAppearance() {
>+  delete fontTag;
>+  if (fontColor) {
>+    delete fontColor;
>+  }
>+}
> //------------------------------------------------------------------------
> // AnnotIconFit
> //------------------------------------------------------------------------
>@@ -2593,12 +2613,13 @@ void AnnotLink::draw(Gfx *gfx, GBool printing) {
> //------------------------------------------------------------------------
> // AnnotFreeText
> //------------------------------------------------------------------------
>-AnnotFreeText::AnnotFreeText(PDFDoc *docA, PDFRectangle *rect, GooString *da) :
>+AnnotFreeText::AnnotFreeText(PDFDoc *docA, PDFRectangle *rect, const DefaultAppearance &da) :
>     AnnotMarkup(docA, rect) {
>   type = typeFreeText;
> 
>+  GooString *daStr = constructAppearanceString(da.getFontTag(), da.getFontPtSize(), da.getFontColor());
>   annotObj.dictSet ("Subtype", Object(objName, "FreeText"));
>-  annotObj.dictSet("DA", Object(da->copy()));
>+  annotObj.dictSet("DA", Object(daStr));
> 
>   initialize (docA, annotObj.getDict());
> }
>@@ -2726,14 +2747,10 @@ void AnnotFreeText::setContents(GooString *new_content) {
>   invalidateAppearance();
> }
> 
>-void AnnotFreeText::setAppearanceString(GooString *new_string) {
>+void AnnotFreeText::setAppearanceString(const DefaultAppearance &da) {
>   delete appearanceString;
> 
>-  if (new_string) {
>-    appearanceString = new GooString(new_string);
>-  } else {
>-    appearanceString = new GooString();
>-  }
>+  appearanceString = constructAppearanceString(da.getFontTag(), da.getFontPtSize(), da.getFontColor());
> 
>   update ("DA", Object(appearanceString->copy()));
>   invalidateAppearance();
>@@ -2805,7 +2822,17 @@ void AnnotFreeText::setIntent(AnnotFreeTextIntent new_intent) {
>   update ("IT", Object(objName, intentName));
> }
> 
>-static GfxFont * createAnnotDrawFont(XRef * xref, Dict *fontResDict)
>+DefaultAppearance AnnotFreeText::getAppearanceString() const {
>+  double fontSize;
>+  AnnotColor *fontColor;
>+  GooString *fontTag;
>+  parseAppearanceString(appearanceString, fontSize, fontColor, fontTag);
>+  DefaultAppearance da(*fontTag, fontSize, fontColor);
>+  delete fontTag;
>+  return da;
>+}
>+
>+static GfxFont *createAnnotDrawFont(XRef * xref, Dict *fontResDict)
> {
>   const Ref dummyRef = { -1, -1 };
> 
>@@ -2822,16 +2849,41 @@ static GfxFont * createAnnotDrawFont(XRef * xref, Dict *fontResDict)
>   return GfxFont::makeFont(xref, "AnnotDrawFont", dummyRef, fontDict);
> }
> 
>-void AnnotFreeText::parseAppearanceString(GooString *da, double &fontsize, AnnotColor* &fontcolor) {
>+GooString *AnnotFreeText::constructAppearanceString(const GooString &fontTag, double fontSize, const AnnotColor *fontColor) {
>+  const double *colorData = fontColor->getValues();
>+  GooString * cstr = nullptr;
>+  switch(fontColor->getSpace())
>+  {
>+    case AnnotColor::AnnotColorSpace::colorTransparent: // =0
>+      cstr = new GooString();
>+      break;
>+    case AnnotColor::AnnotColorSpace::colorGray: //=1
>+      cstr = GooString::format("{0:.2f} g ", colorData[0]);
>+      break;
>+    case AnnotColor::AnnotColorSpace::colorRGB: //=3
>+      cstr = GooString::format("{0:.2f} {1:.2f} {2:.2f} rg ", colorData[0], colorData[1], colorData[2]);
>+      break;
>+    case AnnotColor::AnnotColorSpace::colorCMYK: //=4
>+      cstr = GooString::format("{0:.2f} {1:.2f} {2:.2f} {3:.2f} k ", colorData[0], colorData[1], colorData[2], colorData[3]);
>+      break;
>+  }
>+  const GooString * str = GooString::format("/{0:s} {1:.2f} Tf", &fontTag, fontSize);
>+  return cstr->append( str );
>+}
>+
>+void AnnotFreeText::parseAppearanceString(GooString *da, double &fontsize, AnnotColor* &fontcolor, GooString* &fontTag) {
>   fontsize = -1;
>   fontcolor = nullptr;
>+  fontTag = nullptr;
>   if (da) {
>     GooList * daToks = new GooList();
>     int i = FormFieldText::tokenizeDA(da, daToks, "Tf");
> 
>     if (i >= 1) {
>       fontsize = gatof(( (GooString *)daToks->get(i-1) )->getCString());
>-      // TODO: Font name
>+    }
>+    if (i >= 2) {
>+      fontTag = new GooString(( (GooString *)daToks->get(i-2) )->getCString());
>     }
>     // Scan backwards: we are looking for the last set value
>     for (i = daToks->getLength()-1; i >= 0; --i) {
>@@ -2872,7 +2924,8 @@ void AnnotFreeText::generateFreeTextAppearance()
>   // Parse some properties from the appearance string
>   double fontsize;
>   AnnotColor *fontcolor;
>-  parseAppearanceString(appearanceString, fontsize, fontcolor);
>+  GooString *fontTag;
>+  parseAppearanceString(appearanceString, fontsize, fontcolor, fontTag);
>   // Default values
>   if (fontsize <= 0)
>     fontsize = 10;
>diff --git a/poppler/Annot.h b/poppler/Annot.h
>index 83c10b39..b8c82bcf 100644
>--- a/poppler/Annot.h
>+++ b/poppler/Annot.h
>@@ -347,6 +347,27 @@ private:
>   int length;
> };
> 
>+//------------------------------------------------------------------------
>+// DefaultAppearance
>+//------------------------------------------------------------------------
>+
>+class DefaultAppearance {
>+public:
>+
>+  DefaultAppearance();
>+  DefaultAppearance(const GooString &fontTag, int fontPtSize, AnnotColor *fontColor = nullptr);
>+  const GooString &getFontTag() const { return *fontTag; }
>+  int getFontPtSize() const { return fontPtSize; }
>+  const AnnotColor *getFontColor() const { return fontColor; }
>+  ~DefaultAppearance();
>+
>+private:
>+
>+  GooString *fontTag;
>+  int fontPtSize;
>+  AnnotColor *fontColor;
>+};
>+
> //------------------------------------------------------------------------
> // AnnotIconFit
> //------------------------------------------------------------------------
>@@ -969,7 +990,7 @@ public:
>     intentFreeTextTypeWriter  // FreeTextTypeWriter
>   };
> 
>-  AnnotFreeText(PDFDoc *docA, PDFRectangle *rect, GooString *da);
>+  AnnotFreeText(PDFDoc *docA, PDFRectangle *rect, const DefaultAppearance &da);
>   AnnotFreeText(PDFDoc *docA, Object *dictObject, Object *obj);
>   ~AnnotFreeText();
> 
>@@ -977,14 +998,14 @@ public:
>   Object getAppearanceResDict() override;
>   void setContents(GooString *new_content) override;
> 
>-  void setAppearanceString(GooString *new_string);
>+  void setAppearanceString(const DefaultAppearance &da);
>   void setQuadding(AnnotFreeTextQuadding new_quadding);
>   void setStyleString(GooString *new_string);
>   void setCalloutLine(AnnotCalloutLine *line);
>   void setIntent(AnnotFreeTextIntent new_intent);
> 
>   // getters
>-  const GooString *getAppearanceString() const { return appearanceString; }
>+  DefaultAppearance getAppearanceString() const;
>   AnnotFreeTextQuadding getQuadding() const { return quadding; }
>   // return rc
>   const GooString *getStyleString() const { return styleString; }
>@@ -997,7 +1018,8 @@ public:
> protected:
> 
>   void initialize(PDFDoc *docA, Dict *dict);
>-  static void parseAppearanceString(GooString *da, double &fontsize, AnnotColor* &fontcolor);
>+  static GooString *constructAppearanceString(const GooString &fontTag, double fontSize, const AnnotColor *fontColor);
>+  static void parseAppearanceString(GooString *da, double &fontSize, AnnotColor* &fontColor, GooString* &fontTag);
>   void generateFreeTextAppearance();
> 
>   // required
>diff --git a/qt5/src/poppler-annotation-helper.h b/qt5/src/poppler-annotation-helper.h
>index 3150569c..669b98ee 100644
>--- a/qt5/src/poppler-annotation-helper.h
>+++ b/qt5/src/poppler-annotation-helper.h
>@@ -175,7 +175,7 @@ void XPDFReader::invTransform( double * M, const QPointF &p, double &x, double &
>     y = invM[1] * xt + invM[3] * yt;
> }
> 
>-QColor convertAnnotColor( AnnotColor *color );
>+QColor convertAnnotColor( const AnnotColor *color );
> AnnotColor* convertQColor( const QColor &color );
> 
> }
>diff --git a/qt5/src/poppler-annotation.cc b/qt5/src/poppler-annotation.cc
>index 5550efcd..0b14ad69 100644
>--- a/qt5/src/poppler-annotation.cc
>+++ b/qt5/src/poppler-annotation.cc
>@@ -1816,17 +1816,17 @@ class TextAnnotationPrivate : public AnnotationPrivate
>         TextAnnotationPrivate();
>         Annotation * makeAlias() override;
>         Annot* createNativeAnnot(::Page *destPage, DocumentData *doc) override;
>+        void setDefaultAppearanceToNative();
>+        DefaultAppearance getDefaultAppearanceFromNative() const;
> 
>         // data fields
>         TextAnnotation::TextType textType;
>         QString textIcon;
>         QFont textFont;
>+        QColor textColor;
>         int inplaceAlign; // 0:left, 1:center, 2:right
>         QVector<QPointF> inplaceCallout;
>         TextAnnotation::InplaceIntent inplaceIntent;
>-
>-        // Helper
>-        static GooString * toAppearanceString(const QFont &font);
> };
> 
> TextAnnotationPrivate::TextAnnotationPrivate()
>@@ -1841,13 +1841,6 @@ Annotation * TextAnnotationPrivate::makeAlias()
>     return new TextAnnotation(*this);
> }
> 
>-GooString * TextAnnotationPrivate::toAppearanceString(const QFont &font)
>-{
>-    GooString * s = GooString::format("/Invalid_font {0:d} Tf", font.pointSize());
>-    // TODO: Font family, style (bold, italic, ...) and pointSize as float
>-    return s;
>-}
>-
> Annot* TextAnnotationPrivate::createNativeAnnot(::Page *destPage, DocumentData *doc)
> {
>     // Setters are defined in the public class
>@@ -1859,15 +1852,11 @@ Annot* TextAnnotationPrivate::createNativeAnnot(::Page *destPage, DocumentData *
> 
>     // Set pdfAnnot
>     PDFRectangle rect = boundaryToPdfRectangle(boundary, flags);
>-    if (textType == TextAnnotation::Linked)
>-    {
>-        pdfAnnot = new AnnotText(destPage->getDoc(), &rect);
>-    }
>-    else
>-    {
>-        GooString * da = toAppearanceString(textFont);
>-        pdfAnnot = new AnnotFreeText(destPage->getDoc(), &rect, da);
>-        delete da;
>+    if (textType == TextAnnotation::Linked) {
>+      pdfAnnot = new AnnotText(destPage->getDoc(), &rect);
>+    } else {
>+      DefaultAppearance da(GooString("Invalid_font"), textFont.pointSize(), convertQColor(textColor));
>+      pdfAnnot = new AnnotFreeText(destPage->getDoc(), &rect, da);
>     }
> 
>     // Set properties
>@@ -1884,6 +1873,26 @@ Annot* TextAnnotationPrivate::createNativeAnnot(::Page *destPage, DocumentData *
>     return pdfAnnot;
> }
> 
>+void TextAnnotationPrivate::setDefaultAppearanceToNative()
>+{
>+    if (pdfAnnot && pdfAnnot->getType() == Annot::typeFreeText) {
>+        AnnotFreeText * ftextann = static_cast<AnnotFreeText*>(pdfAnnot);
>+        AnnotColor *color = convertQColor(textColor);
>+        DefaultAppearance da(GooString("Invalid_font"), textFont.pointSize(), color);
>+        ftextann->setAppearanceString(da);
>+    }
>+}
>+
>+DefaultAppearance TextAnnotationPrivate::getDefaultAppearanceFromNative() const
>+{
>+    if (pdfAnnot && pdfAnnot->getType() == Annot::typeFreeText) {
>+        AnnotFreeText * ftextann = static_cast<AnnotFreeText*>(pdfAnnot);
>+        return ftextann->getAppearanceString();
>+    } else {
>+        return DefaultAppearance();
>+    }
>+}
>+
> TextAnnotation::TextAnnotation( TextAnnotation::TextType type )
>     : Annotation( *new TextAnnotationPrivate() )
> {
>@@ -1916,6 +1925,12 @@ TextAnnotation::TextAnnotation( const QDomNode & node )
>             QFont font;
>             font.fromString( e.attribute( QStringLiteral("font") ) );
>             setTextFont(font);
>+            if ( e.hasAttribute( QStringLiteral("fontColor") ) )
>+            {
>+                QColor color;
>+                color = QColor(e.attribute( QStringLiteral("fontColor") ) );
>+                setTextColor(color);
>+            }
>         }
>         if ( e.hasAttribute( QStringLiteral("align") ) )
>             setInplaceAlign(e.attribute( QStringLiteral("align") ).toInt());
>@@ -1975,6 +1990,7 @@ void TextAnnotation::store( QDomNode & node, QDomDocument & document ) const
>         textElement.setAttribute( QStringLiteral("intent"), (int)inplaceIntent() );
> 
>     textElement.setAttribute( QStringLiteral("font"), textFont().toString() );
>+    textElement.setAttribute( QStringLiteral("fontColor"), textColor().name() );
> 
>     // Sub-Node-1 - escapedText
>     if ( !contents().isEmpty() )
>@@ -2074,17 +2090,8 @@ QFont TextAnnotation::textFont() const
> 
>     if (d->pdfAnnot->getType() == Annot::typeFreeText)
>     {
>-        const AnnotFreeText * ftextann = static_cast<const AnnotFreeText*>(d->pdfAnnot);
>-        const GooString * da = ftextann->getAppearanceString();
>-        if (da)
>-        {
>-            // At the moment, only font size is parsed
>-            QString style = QString::fromLatin1( da->getCString() );
>-            QRegExp rx(QStringLiteral("(\\d+)(\\.\\d*)? Tf"));
>-            if (rx.indexIn(style) != -1)
>-                font.setPointSize( rx.cap(1).toInt() );
>-            // TODO: Other properties
>-        }
>+        DefaultAppearance da = d->getDefaultAppearanceFromNative();
>+        font.setPointSize( da.getFontPtSize() );
>     }
> 
>     return font;
>@@ -2093,20 +2100,31 @@ QFont TextAnnotation::textFont() const
> void TextAnnotation::setTextFont( const QFont &font )
> {
>     Q_D( TextAnnotation );
>+    d->textFont = font;
>+    d->textColor = Qt::black;
>+
>+    d->setDefaultAppearanceToNative();
>+}
>+
>+QColor TextAnnotation::textColor() const
>+{
>+    Q_D( const TextAnnotation );
> 
>     if (!d->pdfAnnot)
>-    {
>-        d->textFont = font;
>-        return;
>-    }
>+        return d->textColor;
> 
>-    if (d->pdfAnnot->getType() != Annot::typeFreeText)
>-        return;
>+    QColor color;
>+    DefaultAppearance da = d->getDefaultAppearanceFromNative();
>+    color = convertAnnotColor(da.getFontColor());
>+    return color;
>+}
> 
>-    AnnotFreeText * ftextann = static_cast<AnnotFreeText*>(d->pdfAnnot);
>-    GooString * da = TextAnnotationPrivate::toAppearanceString(font);
>-    ftextann->setAppearanceString(da);
>-    delete da;
>+void TextAnnotation::setTextColor( const QColor &color )
>+{
>+    Q_D( TextAnnotation );
>+    d->textColor = color;
>+
>+    d->setDefaultAppearanceToNative();
> }
> 
> int TextAnnotation::inplaceAlign() const
>@@ -5055,7 +5073,7 @@ RichMediaAnnotation::Content* RichMediaAnnotation::content() const
> 
> 
> //BEGIN utility annotation functions
>-QColor convertAnnotColor( AnnotColor *color )
>+QColor convertAnnotColor( const AnnotColor *color )
> {
>     if ( !color )
>         return QColor();
>diff --git a/qt5/src/poppler-annotation.h b/qt5/src/poppler-annotation.h
>index a70cbe4f..63bf79ae 100644
>--- a/qt5/src/poppler-annotation.h
>+++ b/qt5/src/poppler-annotation.h
>@@ -484,6 +484,8 @@ class POPPLER_QT5_EXPORT TextAnnotation : public Annotation
> 
>     QFont textFont() const;
>     void setTextFont( const QFont &font );
>+    QColor textColor() const;
>+    void setTextColor( const QColor &color );
> 
>     int inplaceAlign() const;
>     void setInplaceAlign( int align );
>-- 
>2.17.1
>

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Attachments on bug 107151: 140496 | 140512 | 140860 | 140935 | 140963 | 141142

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