/***************************************************************************
- * 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"
+
+// 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;
+
+// PRIVATE DATA FOR CHATLINE MODEL ITEM
+class ChatLineModelItemPrivate {
+
+public:
+ inline ChatLineModelItemPrivate(const Message &msg);
+ ~ChatLineModelItemPrivate();
+
+ inline bool needsStyling();
+ QVariant data(MessageModel::ColumnType column, int role);
+
+private:
+ void style();
+ void computeWrapList();
+
+ ChatLineModel::WrapList _wrapList;
+ Message *_msgBuffer;
+ UiStyle::StyledMessage *_styledMsg;
+
+ static unsigned char *TextBoundaryFinderBuffer;
+ static int TextBoundaryFinderBufferSize;
+};
+
+ChatLineModelItemPrivate::ChatLineModelItemPrivate(const Message &msg)
+: _msgBuffer(new Message(msg)),
+ _styledMsg(0) {
-ChatlineModelItem::ChatlineModelItem(const Message &msg) : MessageModelItem(msg) {
- _msg = QtUi::style()->styleMessage(msg);
+}
+ChatLineModelItemPrivate::~ChatLineModelItemPrivate() {
+ if(_msgBuffer) {
+ delete _msgBuffer;
+ } else {
+ delete _styledMsg;
+ }
}
+bool ChatLineModelItemPrivate::needsStyling() {
+ return (bool)_msgBuffer;
+}
-QVariant ChatlineModelItem::data(int column, int role) const {
- switch(role) {
- case ChatlineModel::DisplayRole:
- switch(column) {
- case ChatlineModel::TimestampColumn: return _msg.timestamp.text;
- case ChatlineModel::SenderColumn: return _msg.sender.text;
- case ChatlineModel::TextColumn: return _msg.text.text;
+QVariant ChatLineModelItemPrivate::data(MessageModel::ColumnType column, int role) {
+ if(needsStyling())
+ style();
+ switch(column) {
+ case ChatLineModel::TimestampColumn:
+ 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()));
+ }
+ break;
+ case ChatLineModel::SenderColumn:
+ switch(role) {
+ 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()));
}
break;
- case ChatlineModel::FormatRole:
- switch(column) {
- case ChatlineModel::TimestampColumn: return QVariant::fromValue<UiStyle::FormatList>(_msg.timestamp.formats);
- case ChatlineModel::SenderColumn: return QVariant::fromValue<UiStyle::FormatList>(_msg.sender.formats);
- case ChatlineModel::TextColumn: return QVariant::fromValue<UiStyle::FormatList>(_msg.text.formats);
+ case ChatLineModel::ContentsColumn:
+ 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);
}
break;
+ default:
+ Q_ASSERT(false);
+ return 0;
+ }
+ return QVariant();
+}
+
+void ChatLineModelItemPrivate::style() {
+ _styledMsg = new QtUiStyle::StyledMessage(*_msgBuffer);
+ _styledMsg->style(QtUi::style());
+ delete _msgBuffer;
+ _msgBuffer = 0;
+}
+
+void ChatLineModelItemPrivate::computeWrapList() {
+ int length = _styledMsg->contents().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->contents().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->contents());
+ 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);
}
- return MessageModelItem::data(column, role);
}
-bool ChatlineModelItem::setData(int column, const QVariant &value, int role) {
- return false;
+unsigned char *ChatLineModelItemPrivate::TextBoundaryFinderBuffer = (unsigned char *)malloc(512 * sizeof(HB_CharAttributes_Dummy));
+int ChatLineModelItemPrivate::TextBoundaryFinderBufferSize = 512 * (sizeof(HB_CharAttributes_Dummy) / sizeof(unsigned char));
+
+// ****************************************
+// the actual ChatLineModelItem
+// ****************************************
+ChatLineModelItem::ChatLineModelItem(const Message &msg)
+ : MessageModelItem(msg),
+ _data(new ChatLineModelItemPrivate(msg))
+{
+}
+
+ChatLineModelItem::ChatLineModelItem(const ChatLineModelItem &other)
+ : MessageModelItem(other)
+{
+ _data = new ChatLineModelItemPrivate(message());
+}
+
+ChatLineModelItem::~ChatLineModelItem() {
+ delete _data;
+}
+
+QVariant ChatLineModelItem::data(int column, int role) const {
+ QVariant d = _data->data((MessageModel::ColumnType)column, role);
+ if(!d.isValid()) return MessageModelItem::data(column, role);
+ return d;
}
projects / quassel.git / blobdiff