1 files changed, 383 insertions, 0 deletions
diff --git a/svx/source/tbxctrls/Palette.cxx b/svx/source/tbxctrls/Palette.cxx
new file mode 100644
index 0000000000..b3f1965de3
--- /dev/null
+++ b/svx/source/tbxctrls/Palette.cxx
@@ -0,0 +1,383 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <svx/Palette.hxx>
+#include <tools/stream.hxx>
+
+#include <palettes.hxx>
+#include <utility>
+
+Palette::~Palette()
+{
+}
+
+PaletteASE::~PaletteASE()
+{
+}
+
+PaletteASE::PaletteASE( OUString aFPath, OUString aFName ) :
+    mbValidPalette( false ),
+    maFPath (std::move( aFPath )),
+    maASEPaletteName  (std::move( aFName ))
+{
+    LoadPalette();
+}
+
+void PaletteASE::LoadColorSet(SvxColorValueSet& rColorSet)
+{
+    rColorSet.Clear();
+    int nIx = 1;
+    for (const auto& rColor : maColors)
+    {
+        rColorSet.InsertItem(nIx, rColor.m_aColor, rColor.m_aName);
+        ++nIx;
+    }
+}
+
+const OUString& PaletteASE::GetName()
+{
+    return maASEPaletteName;
+}
+
+const OUString& PaletteASE::GetPath()
+{
+    return maFPath;
+}
+
+bool PaletteASE::IsValid()
+{
+    return mbValidPalette;
+}
+
+// CMYK values from 0 to 1
+// TODO: Deduplicate me (taken from core/cui/source/dialogs/colorpicker.cxx)
+static void lcl_CMYKtoRGB( float fCyan, float fMagenta, float fYellow, float fKey, float& dR, float& dG, float& dB )
+{
+    fCyan = (fCyan * ( 1.0 - fKey )) + fKey;
+    fMagenta = (fMagenta * ( 1.0 - fKey )) + fKey;
+    fYellow = (fYellow * ( 1.0 - fKey )) + fKey;
+
+    dR = std::clamp( 1.0 - fCyan, 0.0, 1.0 );
+    dG = std::clamp( 1.0 - fMagenta, 0.0, 1.0 );
+    dB = std::clamp( 1.0 - fYellow, 0.0, 1.0 );
+}
+
+void PaletteASE::LoadPalette()
+{
+    SvFileStream aFile(maFPath, StreamMode::READ);
+    aFile.SetEndian(SvStreamEndian::BIG);
+
+    // Verify magic first 4 characters
+    char cMagic[5] = {0};
+    if ((aFile.ReadBytes(cMagic, 4) != 4) || (strncmp(cMagic, "ASEF", 4) != 0))
+    {
+        mbValidPalette = false;
+        return;
+    }
+
+    // Ignore the version number
+    aFile.SeekRel(4);
+
+    sal_uInt32 nBlocks = 0;
+    aFile.ReadUInt32(nBlocks);
+    for (sal_uInt32 nI = 0; nI < nBlocks; nI++) {
+        sal_uInt32 nChunkType = 0;
+        aFile.ReadUInt32(nChunkType);
+        // End chunk
+        if (nChunkType == 0)
+           break;
+
+        // Grab chunk size, name length
+        sal_uInt16 nChunkSize = 0;
+        sal_uInt16 nChars = 0;
+        aFile.ReadUInt16(nChunkSize);
+        aFile.ReadUInt16(nChars);
+
+        OUString aPaletteName("");
+        if (nChars > 1)
+            aPaletteName = read_uInt16s_ToOUString(aFile, nChars);
+        else
+            aFile.SeekRel(2);
+
+        if (nChunkType == 0xC0010000)
+        {
+            // Got a start chunk, so set palette name
+            maASEPaletteName = aPaletteName;
+            // Is there color data? (shouldn't happen in a start block, but check anyway)
+            if (nChunkSize > ((nChars * 2) + 2))
+                aPaletteName.clear();
+            else
+                continue;
+        }
+
+        char cColorModel[5] = {0};
+        aFile.ReadBytes(cColorModel, 4);
+        OString aColorModel(cColorModel);
+        // r, g, and b are floats ranging from 0 to 1
+        float r = 0, g = 0, b = 0;
+
+        if (aColorModel.equalsIgnoreAsciiCase("cmyk"))
+        {
+            float c = 0, m = 0, y = 0, k = 0;
+            aFile.ReadFloat(c);
+            aFile.ReadFloat(m);
+            aFile.ReadFloat(y);
+            aFile.ReadFloat(k);
+            lcl_CMYKtoRGB(c, m, y, k, r, g, b);
+        }
+        else if (aColorModel.equalsIgnoreAsciiCase("rgb "))
+        {
+            aFile.ReadFloat(r);
+            aFile.ReadFloat(g);
+            aFile.ReadFloat(b);
+        }
+        else if (aColorModel.equalsIgnoreAsciiCase("gray"))
+        {
+            float nVal = 0;
+            aFile.ReadFloat(nVal);
+            r = g = b = nVal;
+        }
+        else
+        {
+            float nL = 0, nA = 0, nB = 0;
+            aFile.ReadFloat(nL);
+            aFile.ReadFloat(nA);
+            aFile.ReadFloat(nB);
+            // TODO: How to convert LAB to RGB?
+            r = g = b = 0;
+        }
+
+        // Ignore color type
+        aFile.SeekRel(2);
+        maColors.emplace_back(Color(r * 255, g * 255, b * 255), aPaletteName);
+    }
+
+    mbValidPalette = true;
+}
+
+Palette* PaletteASE::Clone() const
+{
+    return new PaletteASE(*this);
+}
+
+// PaletteGPL ------------------------------------------------------------------
+
+static OString lcl_getToken(OStringBuffer& rStr, sal_Int32& index);
+
+PaletteGPL::PaletteGPL( OUString aFPath, OUString aFName ) :
+    mbLoadedPalette( false ),
+    mbValidPalette( false ),
+    maFName(std::move( aFName )),
+    maFPath(std::move( aFPath ))
+{
+    LoadPaletteHeader();
+}
+
+PaletteGPL::~PaletteGPL()
+{
+}
+
+const OUString& PaletteGPL::GetName()
+{
+    return maGPLPaletteName;
+}
+
+const OUString& PaletteGPL::GetPath()
+{
+    return maFPath;
+}
+
+void PaletteGPL::LoadColorSet(SvxColorValueSet& rColorSet)
+{
+    LoadPalette();
+
+    rColorSet.Clear();
+    int nIx = 1;
+    for (const auto& rColor : maColors)
+    {
+        rColorSet.InsertItem(nIx, rColor.m_aColor, rColor.m_aName);
+        ++nIx;
+    }
+}
+
+bool PaletteGPL::IsValid()
+{
+    return mbValidPalette;
+}
+
+bool PaletteGPL::ReadPaletteHeader(SvFileStream& rFileStream)
+{
+    OString aLine;
+    OString aPaletteName;
+
+    rFileStream.ReadLine(aLine);
+    if( !aLine.startsWith("GIMP Palette") ) return false;
+    rFileStream.ReadLine(aLine);
+    if( aLine.startsWith("Name: ", &aPaletteName) )
+    {
+        maGPLPaletteName = OStringToOUString(aPaletteName, RTL_TEXTENCODING_ASCII_US);
+        rFileStream.ReadLine(aLine);
+        if( aLine.startsWith("Columns: "))
+            rFileStream.ReadLine(aLine); // we can ignore this
+    }
+    else
+    {
+        maGPLPaletteName = maFName;
+    }
+    return true;
+}
+
+void PaletteGPL::LoadPaletteHeader()
+{
+    SvFileStream aFile(maFPath, StreamMode::READ);
+    mbValidPalette = ReadPaletteHeader( aFile );
+}
+
+void PaletteGPL::LoadPalette()
+{
+    if( mbLoadedPalette ) return;
+    mbLoadedPalette = true;
+
+    // TODO add error handling!!!
+    SvFileStream aFile(maFPath, StreamMode::READ);
+    mbValidPalette = ReadPaletteHeader( aFile );
+
+    if( !mbValidPalette ) return;
+
+    OStringBuffer aLine;
+    do {
+        if (aLine.isEmpty())
+            continue;
+
+        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.isEmpty() || nIndex == -1) continue;
+            sal_Int32 r = token.toInt32();
+
+            token = lcl_getToken(aLine, nIndex);
+            if(token.isEmpty() || nIndex == -1) continue;
+            sal_Int32 g = token.toInt32();
+
+            token = lcl_getToken(aLine, nIndex);
+            if(token.isEmpty()) continue;
+            sal_Int32 b = token.toInt32();
+
+            std::string_view name;
+            if(nIndex != -1)
+                name = std::string_view(aLine).substr(nIndex);
+
+            maColors.emplace_back(
+                Color(r, g, b),
+                OStringToOUString(name, RTL_TEXTENCODING_ASCII_US));
+        }
+    } while (aFile.ReadLine(aLine));
+}
+
+Palette* PaletteGPL::Clone() const
+{
+    return new PaletteGPL(*this);
+}
+
+// finds first token in rStr from index, separated by whitespace
+// returns position of next token in index
+static OString lcl_getToken(OStringBuffer& rStr, sal_Int32& index)
+{
+    sal_Int32 substart, toklen = 0;
+    OUString aWhitespaceChars( " \n\t" );
+
+    while(index < rStr.getLength() &&
+            aWhitespaceChars.indexOf( rStr[index] ) != -1)
+        ++index;
+    if(index == rStr.getLength())
+    {
+        index = -1;
+        return OString();
+    }
+    substart = index;
+
+    //counts length of token
+    while(index < rStr.getLength() &&
+            aWhitespaceChars.indexOf( rStr[index] ) == -1 )
+    {
+        ++index;
+        ++toklen;
+    }
+
+    //counts to position of next token
+    while(index < rStr.getLength() &&
+            aWhitespaceChars.indexOf( rStr[index] ) != -1 )
+        ++index;
+    if(index == rStr.getLength())
+        index = -1;
+
+    return OString(std::string_view(rStr).substr(substart, toklen));
+}
+
+// PaletteSOC ------------------------------------------------------------------
+
+PaletteSOC::PaletteSOC( OUString aFPath, OUString aFName ) :
+    mbLoadedPalette( false ),
+    maFPath(std::move( aFPath )),
+    maSOCPaletteName(std::move( aFName ))
+{
+}
+
+PaletteSOC::~PaletteSOC()
+{
+}
+
+const OUString& PaletteSOC::GetName()
+{
+    return maSOCPaletteName;
+}
+
+const OUString& PaletteSOC::GetPath()
+{
+    return maFPath;
+}
+
+void PaletteSOC::LoadColorSet(SvxColorValueSet& rColorSet)
+{
+    if( !mbLoadedPalette )
+    {
+        mbLoadedPalette = true;
+        mpColorList = XPropertyList::AsColorList(XPropertyList::CreatePropertyListFromURL(XPropertyListType::Color, maFPath));
+        (void)mpColorList->Load();
+    }
+    rColorSet.Clear();
+    if( mpColorList.is() )
+        rColorSet.addEntriesForXColorList( *mpColorList );
+}
+
+bool PaletteSOC::IsValid()
+{
+    return true;
+}
+
+Palette* PaletteSOC::Clone() const
+{
+    return new PaletteSOC(*this);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */