1 files changed, 138 insertions, 0 deletions
diff --git a/src/app/metaedit.cpp b/src/app/metaedit.cpp
new file mode 100644
index 0000000..0d56f48
--- /dev/null
+++ b/src/app/metaedit.cpp
@@ -0,0 +1,138 @@
+// vim: set tabstop=4 shiftwidth=4 noexpandtab
+/*
+Copyright (c) 2003 Jos van den Oever
+
+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; either version 2
+of the License, or (at your option) any later version.
+
+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; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+// Qt
+#include <qlabel.h>
+#include <qtextedit.h>
+#include <qfileinfo.h>
+
+// KDE
+#include <kdeversion.h>
+#include <klocale.h>
+
+// Local
+#include "gvcore/document.h"
+#include "metaedit.moc"
+namespace Gwenview {
+
+// FIXME: Why doesn't MetaEdit inherits from QTextEdit rather than QVBox?
+MetaEdit::MetaEdit(QWidget *parent, Document *gvp, const char *name)
+: QVBox(parent, name)
+, mEmpty(true)
+, mDocument(gvp)
+{
+	mCommentEdit=new QTextEdit(this);
+	mCommentEdit->installEventFilter(this);
+	connect(mCommentEdit, SIGNAL(modificationChanged(bool)),
+		this, SLOT(setModified(bool)));
+	connect(mDocument,SIGNAL(loaded(const KURL&)),
+		this,SLOT(updateContent()) );
+	connect(mCommentEdit, SIGNAL(textChanged()),
+		this, SLOT(updateDoc()) );
+	updateContent();
+	mCommentEdit->setMinimumHeight(int (mCommentEdit->fontMetrics().height() * 1.5) );
+}
+
+
+MetaEdit::~MetaEdit() {
+}
+
+
+bool MetaEdit::eventFilter(QObject*, QEvent *event) {
+	if (mEmpty
+		&& (mDocument->commentState()==Document::WRITABLE)
+		&& (event->type()==QEvent::FocusIn || event->type()==QEvent::FocusOut) 
+	) {
+		setEmptyText();
+	}
+	return false;
+}
+
+
+void MetaEdit::setModified(bool m) {
+	if (m && mEmpty) {
+		mEmpty = false;
+	}
+}
+
+
+void MetaEdit::updateContent() {
+	if (mDocument->isNull()) {
+		setMessage(i18n("No image selected."));
+		return;
+	}
+
+	if (mDocument->commentState() == Document::NONE) {
+		setMessage(i18n("This image cannot be commented."));
+		return;
+	}
+	
+	QString comment=mDocument->comment();
+	mEmpty = comment.isEmpty();
+	if (mEmpty) {
+		setEmptyText();
+		return;
+	}
+	setComment(comment);
+}
+
+
+void MetaEdit::updateDoc() {
+	if ((mDocument->commentState()==Document::WRITABLE) && mCommentEdit->isModified()) {
+		mDocument->setComment(mCommentEdit->text());
+		mCommentEdit->setModified(false);
+	}
+}
+
+
+void MetaEdit::setEmptyText() {
+	Q_ASSERT(mDocument->commentState()!=Document::NONE);
+	if (mDocument->commentState()==Document::WRITABLE) {
+		if (mCommentEdit->hasFocus()) {
+			setComment("");
+		} else {
+			setMessage(i18n("Type here to add a comment to this image."));
+		}
+	} else {
+		setMessage(i18n("No comment available."));
+	}
+}
+
+
+/**
+ * Use mCommentEdit to show the comment and let the user edit it
+ */
+void MetaEdit::setComment(const QString& comment) {
+	Q_ASSERT(mDocument->commentState()!=Document::NONE);
+	mCommentEdit->setTextFormat(QTextEdit::PlainText);
+	mCommentEdit->setReadOnly(mDocument->commentState()==Document::READ_ONLY);
+	mCommentEdit->setText(comment);
+}
+
+
+/**
+ * Use mCommentEdit to display a read-only message
+ */
+void MetaEdit::setMessage(const QString& msg) {
+	mCommentEdit->setTextFormat(QTextEdit::RichText);
+	mCommentEdit->setReadOnly(true);
+	mCommentEdit->setText(QString("<i>%1</i>").arg(msg));
+}
+
+} // namespace