File indexing completed on 2024-06-16 04:17:04

 /*
  *  SPDX-FileCopyrightText: 2009 Boudewijn Rempt <boud@valdyas.org>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 #include "psd_colormode_block.h"
 
 #include <psd_utils.h>
 #include <QByteArray>
 #include <QColor>
 
 PSDColorModeBlock::PSDColorModeBlock(psd_color_mode colormode)
     : blocksize(0)
     , colormode(colormode)
 {
 }
 
 bool PSDColorModeBlock::read(QIODevice &io)
 {
     // get length
     psdread(io, blocksize);
 
     if (blocksize == 0) {
         if (colormode == Indexed || colormode == DuoTone) {
             error = "Blocksize of 0 and Indexed or DuoTone colormode";
             return false;
         }
         else {
             return true;
         }
     }
 
     if (colormode == Indexed && blocksize != 768) {
         error = QString("Indexed mode, but block size is %1.").arg(blocksize);
         return false;
     }
 
     data = io.read(blocksize);
     if ((quint32)data.size() != blocksize) return false;
 
     if (colormode == Indexed) {
         int i = 0;
         while (i <= 767) {
             colormap.append(qRgb(data[i],data[i + 1],data[i + 2]));
             i += 2;
         }
     }
     else {
         duotoneSpecification = data;
     }
     return valid();
 }
 
 bool PSDColorModeBlock::write(QIODevice &io)
 {
     if (!valid()) {
         error = "Cannot write an invalid Color Mode Block";
         return false;
     }
     if (colormap.size() > 0 && colormode == Indexed) {
         error = "Cannot write indexed color data";
         return false;
     }
     else if (duotoneSpecification.size() > 0 && colormode == DuoTone) {
         quint32 blocksize = duotoneSpecification.size();
         psdwrite(io, blocksize);
         if (io.write(duotoneSpecification.constData(), blocksize) != blocksize) {
             error = "Failed to write duotone specification";
             return false;
         }
     }
     else {
         quint32 i = 0;
         psdwrite(io, i);
     }
     return true;
 }
 
 bool PSDColorModeBlock::valid()
 {
     if (blocksize == 0 && (colormode == Indexed || colormode == DuoTone)) {
         error = "Blocksize of 0 and Indexed or DuoTone colormode";
         return false;
     }
     if (colormode == Indexed && blocksize != 768) {
         error = QString("Indexed mode, but block size is %1.").arg(blocksize);
         return false;
     }
     if (colormode == DuoTone && blocksize == 0) {
         error = QString("DuoTone mode, but data block is empty");
         return false;
     }
     if ((quint32)data.size() != blocksize) {
         error = QString("Data size is %1, but block size is %2").arg(data.size()).arg(blocksize);
         return false;
     }
     return true;
 }