/***************************************************************************
- * Copyright (C) 2005-08 by the Quassel Project *
+ * Copyright (C) 2005-09 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#include <QFontMetrics>
+#include <QTextBoundaryFinder>
+
#include "chatlinemodelitem.h"
#include "chatlinemodel.h"
#include "qtui.h"
-#include "uistyle.h"
+#include "qtuistyle.h"
-ChatlineModelItem::ChatlineModelItem(const Message &msg) : MessageModelItem(msg) {
- QtUiStyle::StyledMessage m = QtUi::style()->styleMessage(msg);
+// This Struct is taken from Harfbuzz. We use it only to calc it's size.
+// we use a shared memory region so we do not have to malloc a buffer area for every line
+typedef struct {
+ /*HB_LineBreakType*/ unsigned lineBreakType :2;
+ /*HB_Bool*/ unsigned whiteSpace :1; /* A unicode whitespace character, except NBSP, ZWNBSP */
+ /*HB_Bool*/ unsigned charStop :1; /* Valid cursor position (for left/right arrow) */
+ /*HB_Bool*/ unsigned wordBoundary :1;
+ /*HB_Bool*/ unsigned sentenceBoundary :1;
+ unsigned unused :2;
+} HB_CharAttributes_Dummy;
- _timestamp.plainText = m.timestamp.text;
- _sender.plainText = m.sender.text;
- _contents.plainText = m.text.text;
- _timestamp.formatList = m.timestamp.formats;
- _sender.formatList = m.sender.formats;
- _contents.formatList = m.text.formats;
+unsigned char *ChatLineModelItem::TextBoundaryFinderBuffer = (unsigned char *)malloc(512 * sizeof(HB_CharAttributes_Dummy));
+int ChatLineModelItem::TextBoundaryFinderBufferSize = 512 * (sizeof(HB_CharAttributes_Dummy) / sizeof(unsigned char));
+// ****************************************
+// the actual ChatLineModelItem
+// ****************************************
+ChatLineModelItem::ChatLineModelItem(const Message &msg)
+ : MessageModelItem(),
+ _styledMsg(msg)
+{
+ if(!msg.sender().contains('!'))
+ _styledMsg.setFlags(msg.flags() |= Message::ServerMsg);
}
+QVariant ChatLineModelItem::data(int column, int role) const {
+ MessageModel::ColumnType col = (MessageModel::ColumnType)column;
+ QVariant variant;
+ switch(col) {
+ case ChatLineModel::TimestampColumn:
+ variant = timestampData(role);
+ break;
+ case ChatLineModel::SenderColumn:
+ variant = senderData(role);
+ break;
+ case ChatLineModel::ContentsColumn:
+ variant = contentsData(role);
+ break;
+ default:
+ break;
+ }
+ if(!variant.isValid())
+ return MessageModelItem::data(column, role);
+ return variant;
+}
-QVariant ChatlineModelItem::data(int column, int role) const {
- const ChatlinePart *part;
-
- switch(column) {
- case ChatlineModel::TimestampColumn: part = &_timestamp; break;
- case ChatlineModel::SenderColumn: part = &_sender; break;
- case ChatlineModel::TextColumn: part = &_contents; break;
- default: return MessageModelItem::data(column, role);
+QVariant ChatLineModelItem::timestampData(int role) const {
+ switch(role) {
+ case ChatLineModel::DisplayRole:
+ return _styledMsg.decoratedTimestamp();
+ case ChatLineModel::EditRole:
+ return _styledMsg.timestamp();
+ case ChatLineModel::FormatRole:
+ return QVariant::fromValue<UiStyle::FormatList>(UiStyle::FormatList() << qMakePair((quint16)0, (quint32)_styledMsg.timestampFormat()));
}
+ return QVariant();
+}
+QVariant ChatLineModelItem::senderData(int role) const {
switch(role) {
- case ChatlineModel::DisplayRole: return part->plainText;
- case ChatlineModel::FormatRole: return QVariant::fromValue<UiStyle::FormatList>(part->formatList);
+ case ChatLineModel::DisplayRole:
+ return _styledMsg.decoratedSender();
+ case ChatLineModel::EditRole:
+ return _styledMsg.plainSender();
+ case ChatLineModel::FormatRole:
+ return QVariant::fromValue<UiStyle::FormatList>(UiStyle::FormatList() << qMakePair((quint16)0, (quint32)_styledMsg.senderFormat()));
}
+ return QVariant();
+}
+
+QVariant ChatLineModelItem::contentsData(int role) const {
+ if(_styledMsg.needsStyling())
+ _styledMsg.style(QtUi::style());
- return MessageModelItem::data(column, role);
+ switch(role) {
+ case ChatLineModel::DisplayRole:
+ case ChatLineModel::EditRole:
+ return _styledMsg.plainContents();
+ case ChatLineModel::FormatRole:
+ return QVariant::fromValue<UiStyle::FormatList>(_styledMsg.contentsFormatList());
+ case ChatLineModel::WrapListRole:
+ if(_wrapList.isEmpty())
+ computeWrapList();
+ return QVariant::fromValue<ChatLineModel::WrapList>(_wrapList);
+ }
+ return QVariant();
}
-bool ChatlineModelItem::setData(int column, const QVariant &value, int role) {
- return false;
+void ChatLineModelItem::computeWrapList() const {
+ int length = _styledMsg.plainContents().length();
+ if(!length)
+ return;
+
+ enum Mode { SearchStart, SearchEnd };
+
+ QList<ChatLineModel::Word> wplist; // use a temp list which we'll later copy into a QVector for efficiency
+ QTextBoundaryFinder finder(QTextBoundaryFinder::Word, _styledMsg.plainContents().unicode(), length,
+ TextBoundaryFinderBuffer, TextBoundaryFinderBufferSize);
+
+ int idx;
+ int oldidx = 0;
+ bool wordStart = false;
+ bool wordEnd = false;
+ Mode mode = SearchEnd;
+ ChatLineModel::Word word;
+ word.start = 0;
+ qreal wordstartx = 0;
+
+ QTextLayout layout(_styledMsg.plainContents());
+ QTextOption option;
+ option.setWrapMode(QTextOption::NoWrap);
+ layout.setTextOption(option);
+
+ layout.setAdditionalFormats(QtUi::style()->toTextLayoutList(_styledMsg.contentsFormatList(), length));
+ layout.beginLayout();
+ QTextLine line = layout.createLine();
+ line.setNumColumns(length);
+ layout.endLayout();
+
+ do {
+ idx = finder.toNextBoundary();
+ if(idx < 0) {
+ idx = length;
+ wordStart = false;
+ wordEnd = false;
+ mode = SearchStart;
+ } else {
+ wordStart = finder.boundaryReasons().testFlag(QTextBoundaryFinder::StartWord);
+ wordEnd = finder.boundaryReasons().testFlag(QTextBoundaryFinder::EndWord);
+ }
+
+ //if(flg) qDebug() << idx << mode << wordStart << wordEnd << contents->plainText.left(idx) << contents->plainText.mid(idx);
+
+ if(mode == SearchEnd || (!wordStart && wordEnd)) {
+ if(wordStart || !wordEnd) continue;
+ oldidx = idx;
+ mode = SearchStart;
+ continue;
+ }
+ qreal wordendx = line.cursorToX(oldidx);
+ qreal trailingendx = line.cursorToX(idx);
+ word.endX = wordendx;
+ word.width = wordendx - wordstartx;
+ word.trailing = trailingendx - wordendx;
+ wordstartx = trailingendx;
+ wplist.append(word);
+
+ if(wordStart) {
+ word.start = idx;
+ mode = SearchEnd;
+ }
+ // the part " || (finder.position() == contents->plainText.length())" shouldn't be necessary
+ // but in rare and indeterministic cases Qt states that the end of the text is not a boundary o_O
+ } while(finder.isAtBoundary() || (finder.position() == length));
+
+ // A QVector needs less space than a QList
+ _wrapList.resize(wplist.count());
+ for(int i = 0; i < wplist.count(); i++) {
+ _wrapList[i] = wplist.at(i);
+ }
}
+