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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kfile-plugins/pnm/kfile_pnm.cpp
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kfile-plugins/pnm/kfile_pnm.cpp')
-rw-r--r--kfile-plugins/pnm/kfile_pnm.cpp137
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diff --git a/kfile-plugins/pnm/kfile_pnm.cpp b/kfile-plugins/pnm/kfile_pnm.cpp
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+++ b/kfile-plugins/pnm/kfile_pnm.cpp
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+/* This file is part of the KDE project
+ * Copyright (C) 2003 Volker Krause <volker.krause@rwth-aachen.de>
+ *
+ * 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 "kfile_pnm.h"
+
+#include <math.h>
+#include <kgenericfactory.h>
+#include <qfile.h>
+#include <qtextstream.h>
+
+static const char* formats[] = {
+ I18N_NOOP("plain"),
+ I18N_NOOP("raw")
+};
+
+typedef KGenericFactory<KPnmPlugin> PnmFactory;
+
+K_EXPORT_COMPONENT_FACTORY(kfile_pnm, PnmFactory("kfile_pnm"))
+
+KPnmPlugin::KPnmPlugin(QObject *parent, const char *name, const QStringList &args) : KFilePlugin(parent, name, args)
+{
+ makeMimeTypeInfo( "image/x-portable-bitmap" );
+ makeMimeTypeInfo( "image/x-portable-greymap" );
+ makeMimeTypeInfo( "image/x-portable-pixmap" );
+}
+
+void KPnmPlugin::makeMimeTypeInfo(const QString& mimetype)
+{
+ KFileMimeTypeInfo* info = addMimeTypeInfo( mimetype );
+
+ KFileMimeTypeInfo::GroupInfo* group = 0;
+ KFileMimeTypeInfo::ItemInfo* item = 0;
+
+ group = addGroupInfo(info, "General", i18n("General"));
+
+ addItemInfo(group, "Format", i18n("Format"), QVariant::String);
+
+ item = addItemInfo(group, "Dimensions", i18n("Dimensions"), QVariant::Size);
+ setUnit(item, KFileMimeTypeInfo::Pixels);
+
+ item = addItemInfo(group, "BitDepth", i18n("Bit Depth"), QVariant::Int);
+ setUnit(item, KFileMimeTypeInfo::BitsPerPixel);
+
+ addItemInfo(group, "Comment", i18n("Comment"), QVariant::String);
+}
+
+
+bool KPnmPlugin::readInfo( KFileMetaInfo& info, uint /*what*/)
+{
+ QFile f(info.path());
+ if(!f.open(IO_ReadOnly))
+ return false;
+ if(f.size() <= 2)
+ return false;
+ QTextStream stream(&f);
+
+ char c;
+ stream >> c;
+ if(c != 'P')
+ return false;
+
+ // image format and type
+ int n;
+ stream >> n;
+ int format = (n - 1) / 3;
+ if(format != 0 && format != 1)
+ return false;
+ int type = (n - 1) % 3;
+
+ QString comments, buffer;
+ while(!stream.atEnd()) {
+ stream >> c;
+ // comment
+ if( c == '#') {
+ buffer = stream.readLine();
+ comments += buffer.stripWhiteSpace();
+ comments += '\n';
+ }
+ // image size
+ // unfortunately Qt doesn't have some kind of push-back method for
+ // QTextStream, so we need to manually decode the first part of the
+ // image size.
+ if( c >= '0' && c <= '9' ) {
+ buffer = "";
+ QChar tmp(c);
+ while(!stream.atEnd() && tmp.isDigit()) {
+ buffer += tmp;
+ stream >> tmp;
+ }
+ break;
+ }
+ }
+
+ // image size
+ int x, y, max;
+ x = buffer.toInt();
+ stream >> y;
+ stream >> max;
+
+ // bit depth
+ // PNM doesn't provide a conventional bit depth value, only the highest value
+ // per pixel. To have comparable values with other formats, we convert it to
+ // a normal bit depth value.
+ int bpp = 1;
+ if(type != 0)
+ bpp = (int)ceil(log((double)max) / log(2.0));
+ if(type == 2)
+ bpp *= 3;
+
+ KFileMetaInfoGroup group = appendGroup(info, "General");
+ appendItem(group, "Format", formats[format]);
+ appendItem(group, "Dimensions", QSize(x, y));
+ if(!comments.isEmpty())
+ appendItem(group, "Comment", comments.stripWhiteSpace());
+ appendItem(group, "BitDepth", bpp);
+
+ f.close();
+ return true;
+}
+
+#include "kfile_pnm.moc"