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Diffstat (limited to 'kfile-plugins/rgb/kfile_rgb.cpp')
| -rw-r--r-- | kfile-plugins/rgb/kfile_rgb.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/kfile-plugins/rgb/kfile_rgb.cpp b/kfile-plugins/rgb/kfile_rgb.cpp new file mode 100644 index 00000000..b7b55035 --- /dev/null +++ b/kfile-plugins/rgb/kfile_rgb.cpp @@ -0,0 +1,208 @@ +/* This file is part of the KDE project + * Copyright (C) 2004 Melchior FRANZ <mfranz@kde.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#include <config.h> +#include "kfile_rgb.h" + +#include <qfile.h> +#include <qvalidator.h> + +#include <kdebug.h> +#include <kgenericfactory.h> + + +typedef KGenericFactory<KRgbPlugin> RgbFactory; + +K_EXPORT_COMPONENT_FACTORY(kfile_rgb, RgbFactory("kfile_rgb")) + + +KRgbPlugin::KRgbPlugin(QObject *parent, const char *name, const QStringList &args) : + KFilePlugin(parent, name, args) +{ + KFileMimeTypeInfo* info = addMimeTypeInfo("image/x-rgb"); + + KFileMimeTypeInfo::GroupInfo* group = 0; + KFileMimeTypeInfo::ItemInfo* item; + + + group = addGroupInfo(info, "Comment", i18n("Comment")); + + item = addItemInfo(group, "ImageName", i18n("Name"), QVariant::String); + setAttributes(item, KFileMimeTypeInfo::Modifiable); + setHint(item, KFileMimeTypeInfo::Description); + + + group = addGroupInfo(info, "Technical", i18n("Technical Details")); + + item = addItemInfo(group, "Dimensions", i18n("Dimensions"), QVariant::Size); + setHint(item, KFileMimeTypeInfo::Size); + setUnit(item, KFileMimeTypeInfo::Pixels); + + item = addItemInfo(group, "BitDepth", i18n("Bit Depth"), QVariant::Int); + setUnit(item, KFileMimeTypeInfo::BitsPerPixel); + + item = addItemInfo(group, "ColorMode", i18n("Color Mode"), QVariant::String); + item = addItemInfo(group, "Compression", i18n("Compression"), QVariant::String); + item = addItemInfo(group, "SharedRows", + i18n("percentage of avoided vertical redundancy (the higher the better)", + "Shared Rows"), QVariant::String); + +} + + +bool KRgbPlugin::readInfo(KFileMetaInfo& info, uint /*what*/) +{ + QFile file(info.path()); + + if (!file.open(IO_ReadOnly)) { + kdDebug(7034) << "Couldn't open " << QFile::encodeName(info.path()) << endl; + return false; + } + + QDataStream dstream(&file); + + Q_UINT16 magic; + Q_UINT8 storage; + Q_UINT8 bpc; + Q_UINT16 dimension; + Q_UINT16 xsize; + Q_UINT16 ysize; + Q_UINT16 zsize; + Q_UINT32 pixmin; + Q_UINT32 pixmax; + Q_UINT32 dummy; + char imagename[80]; + Q_UINT32 colormap; + + dstream >> magic; + dstream >> storage; + dstream >> bpc; + dstream >> dimension; + dstream >> xsize; + dstream >> ysize; + dstream >> zsize; + dstream >> pixmin; + dstream >> pixmax; + dstream >> dummy; + dstream.readRawBytes(imagename, 80); + imagename[79] = '\0'; + dstream >> colormap; + Q_UINT8 u8; + for (uint i = 0; i < 404; i++) + dstream >> u8; + + if (magic != 474) + return false; + + KFileMetaInfoGroup group; + + group = appendGroup(info, "Technical"); + + if (dimension == 1) + ysize = 1; + appendItem(group, "Dimensions", QSize(xsize, ysize)); + appendItem(group, "BitDepth", zsize * 8 * bpc); + + if (zsize == 1) + appendItem(group, "ColorMode", i18n("Grayscale")); + else if (zsize == 2) + appendItem(group, "ColorMode", i18n("Grayscale/Alpha")); + else if (zsize == 3) + appendItem(group, "ColorMode", i18n("RGB")); + else if (zsize == 4) + appendItem(group, "ColorMode", i18n("RGB/Alpha")); + + if (!storage) + appendItem(group, "Compression", i18n("Uncompressed")); + else if (storage == 1) { + long compressed = file.size() - 512; + long verbatim = xsize * ysize * zsize; + appendItem(group, "Compression", i18n("Runlength Encoded") + + QString(", %1%").arg(compressed * 100.0 / verbatim, 0, 'f', 1)); + + long k; + Q_UINT32 offs; + QMap<Q_UINT32, uint> map; + QMap<Q_UINT32, uint>::Iterator it; + QMap<Q_UINT32, uint>::Iterator end = map.end(); + for (k = 0; k < (ysize * zsize); k++) { + dstream >> offs; + if ((it = map.find(offs)) != end) + map.replace(offs, it.data() + 1); + else + map[offs] = 0; + } + for (k = 0, it = map.begin(); it != end; ++it) + k += it.data(); + + if (k) + appendItem(group, "SharedRows", QString("%1%").arg(k * 100.0 + / (ysize * zsize), 0, 'f', 1)); + else + appendItem(group, "SharedRows", i18n("None")); + } else + appendItem(group, "Compression", i18n("Unknown")); + + + group = appendGroup(info, "Comment"); + appendItem(group, "ImageName", imagename); + + file.close(); + return true; +} + + +bool KRgbPlugin::writeInfo(const KFileMetaInfo& info) const +{ + QFile file(info.path()); + + if (!file.open(IO_WriteOnly|IO_Raw)) { + kdDebug(7034) << "couldn't open " << QFile::encodeName(info.path()) << endl; + return false; + } + + if (!file.at(24)) { + kdDebug(7034) << "couldn't set offset" << endl; + return false; + } + + QDataStream dstream(&file); + QString s = info["Comment"]["ImageName"].value().toString(); + s.truncate(79); + + unsigned i; + for (i = 0; i < s.length(); i++) + dstream << Q_UINT8(s.latin1()[i]); + for (; i < 80; i++) + dstream << Q_UINT8(0); + + file.close(); + return true; +} + + +// restrict to 79 ASCII characters +QValidator* KRgbPlugin::createValidator(const QString&, const QString &, + const QString &, QObject* parent, const char* name) const +{ + return new QRegExpValidator(QRegExp("[\x0020-\x007E]{79}"), parent, name); +} + + +#include "kfile_rgb.moc" |