Add GIMP palette loading code

Change-Id: Ie0d0787342bc806a1848cb904114f0ca16c9df69

include/svx/SvxColorValueSet.hxx

@@ -24,6 +24,16 @@
 
 class XColorList;
 
+struct Palette
+{
+    typedef std::pair<Color, OString> NamedColor;
+    typedef std::vector< NamedColor > ColorList;
+    Palette(){};
+    Palette(const OUString &rFname);
+    OString maName;
+    ColorList maColors;
+};
+
 class SVX_DLLPUBLIC SvxColorValueSet : public ValueSet
 {
 private:
@@ -39,7 +49,8 @@ public:
     sal_uInt32 getColumnCount() const;
 
     void addEntriesForXColorList(const XColorList& rXColorList, sal_uInt32 nStartIndex = 1);
-    void addEntriesForColorVector(const std::vector<Color>& rColorVector, sal_uInt32 nStartIndex = 1);
+    void loadColorVector(const std::vector<Color>& rColorVector, const OUString& rNamePrefix, sal_uInt32 nStartIndex = 1);
+    void loadPalette(const Palette& rPalette);
     Size layoutAllVisible(sal_uInt32 nEntryCount);
     Size layoutToGivenHeight(sal_uInt32 nHeight, sal_uInt32 nEntryCount);
 };

svx/source/tbxctrls/SvxColorValueSet.cxx

@@ -24,6 +24,83 @@
 #include <vcl/settings.hxx>
 
 
+// finds first token in rStr from index, separated by whitespace
+// returns position of next token in index
+OString lcl_getToken(const OString& rStr, sal_Int32& index)
+{
+    sal_Int32 substart, toklen = 0;
+
+    while(index < rStr.getLength() &&
+          (rStr[index] == ' ' || rStr[index] == '\n' || rStr[index] == '\t'))
+        ++index;
+    if(index == rStr.getLength())
+    {
+        index = -1;
+        return OString();
+    }
+    substart = index;
+
+    while(index < rStr.getLength() &&
+          !(rStr[index] == ' ' || rStr[index] == '\n' || rStr[index] == '\t'))
+    {
+        ++index;
+        ++toklen;
+    }
+
+    while(index < rStr.getLength() &&
+          (rStr[index] == ' ' || rStr[index] == '\n' || rStr[index] == '\t'))
+        ++index;
+    if(index == rStr.getLength())
+        index = -1;
+
+    return rStr.copy(substart, toklen);
+}
+
+Palette::Palette(const OUString &rFname)
+{
+    // TODO add error handling!!!
+    SvFileStream aFile(rFname, STREAM_READ);
+
+    OString aPaletteName;
+    OString aLine;
+
+    aFile.ReadLine(aLine);
+    if( !aLine.startsWith("GIMP Palette") ) return;
+    aFile.ReadLine(aLine);
+    if( aLine.startsWith("Name: ", &aPaletteName) )
+    {
+        aFile.ReadLine(aLine);
+        if( aLine.startsWith("Columns: "))
+            aFile.ReadLine(aLine); // we can ignore this
+    }
+
+    do {
+        if (aLine[0] != '#' && aLine[0] != '\n')
+        {
+            // TODO check if r,g,b are 0<= x <=255, or just clamp?
+            sal_Int32 nIndex = 0;
+            OString token;
+
+            token = lcl_getToken(aLine, nIndex);
+            if(token == "" || nIndex == -1) continue;
+            sal_Int32 r = token.toInt32();
+
+            token = lcl_getToken(aLine, nIndex);
+            if(token == "" || nIndex == -1) continue;
+            sal_Int32 g = token.toInt32();
+
+            token = lcl_getToken(aLine, nIndex);
+            if(token == "") continue;
+            sal_Int32 b = token.toInt32();
+
+            OString name;
+            if(nIndex != -1)
+                name = aLine.copy(nIndex);
+
+            maColors.push_back(std::make_pair(Color(r, g, b), name));
+        }
+    } while (aFile.ReadLine(aLine));
+}
 
 SvxColorValueSet::SvxColorValueSet(Window* _pParent, WinBits nWinStyle)
 :   ValueSet(_pParent, nWinStyle)
@@ -88,12 +165,37 @@ void SvxColorValueSet::addEntriesForXColorList(const XColorList& rXColorList, sa
     }
 }
 
-void SvxColorValueSet::addEntriesForColorVector(const std::vector<Color>& rColorVector, sal_uInt32 nStartIndex)
+void SvxColorValueSet::loadColorVector(const std::vector<Color>& rColorVector, const OUString& rNamePrefix, sal_uInt32 nStartIndex)
+{
+    if(rNamePrefix.getLength() != 0)
+    {
+        for(std::vector<Color>::const_iterator it = rColorVector.begin();
+            it != rColorVector.end(); it++, nStartIndex++)
+        {
+            InsertItem(nStartIndex, *it, rNamePrefix + OUString::number(nStartIndex));
+        }
+    }
+    else
+    {
+        for(std::vector<Color>::const_iterator it = rColorVector.begin();
+            it != rColorVector.end(); it++, nStartIndex++)
+        {
+            InsertItem(nStartIndex, *it, "");
+        }
+    }
+}
+
+
+void SvxColorValueSet::loadPalette(const Palette& rPalette)
 {
-    for(std::vector<Color>::const_iterator it = rColorVector.begin();
-        it != rColorVector.end(); it++, nStartIndex++)
+    const Palette::ColorList &rColors = rPalette.maColors;
+    Clear();
+    int nIx = 1;
+    for(Palette::ColorList::const_iterator it = rColors.begin();
+        it != rColors.end(); ++it)
     {
-        InsertItem(nStartIndex, *it, "");
+        InsertItem(nIx, it->first, OStringToOUString(it->second, RTL_TEXTENCODING_ASCII_US));
+        ++nIx;
     }
 }