X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatlinemodelitem.cpp;h=1e12cd1a106f2d67ef08cd9a803a5b67a504dc03;hp=59f7b5cc361c3fc43039bb82aa465d92978282ae;hb=8c171717381424c896b9f720db203ddb815c76e1;hpb=1817c8c8e2437d8aadcc1f07195fa4555cb1c17c diff --git a/src/qtui/chatlinemodelitem.cpp b/src/qtui/chatlinemodelitem.cpp index 59f7b5cc..1e12cd1a 100644 --- a/src/qtui/chatlinemodelitem.cpp +++ b/src/qtui/chatlinemodelitem.cpp @@ -18,43 +18,205 @@ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ +#include +#include + #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.plainText; - _sender.plainText = m.sender.plainText; - _contents.plainText = m.contents.plainText; +// PRIVATE DATA FOR CHATLINE MODEL ITEM +class ChatLineModelItemPrivate { + struct ChatLinePart { + QString plainText; + UiStyle::FormatList formatList; + inline ChatLinePart(const QString &pT, const UiStyle::FormatList &fL) : plainText(pT), formatList(fL) {} + }; - _timestamp.formatList = m.timestamp.formatList; - _sender.formatList = m.sender.formatList; - _contents.formatList = m.contents.formatList; +public: + inline ChatLineModelItemPrivate(const Message &msg) : _msgBuffer(new Message(msg)), timestamp(0), sender(0), contents(0) {} + inline ~ChatLineModelItemPrivate() { + if(_msgBuffer) { + delete _msgBuffer; + } else { + delete timestamp; + delete sender; + delete contents; + } + } -} + inline bool needsStyling() { return (bool)_msgBuffer; } + inline ChatLinePart *partByColumn(MessageModel::ColumnType column) { + switch(column) { + case ChatLineModel::TimestampColumn: + return timestamp; + case ChatLineModel::SenderColumn: + return sender; + case ChatLineModel::ContentsColumn: + return contents; + default: + Q_ASSERT(false); + return 0; + } + } -QVariant ChatLineModelItem::data(int column, int role) const { - const ChatLinePart *part; + inline const QString &plainText(MessageModel::ColumnType column) { + if(needsStyling()) + style(); + return partByColumn(column)->plainText; + } - switch(column) { - case ChatLineModel::TimestampColumn: part = &_timestamp; break; - case ChatLineModel::SenderColumn: part = &_sender; break; - case ChatLineModel::ContentsColumn: part = &_contents; break; - default: return MessageModelItem::data(column, role); + inline const UiStyle::FormatList &formatList(MessageModel::ColumnType column) { + if(needsStyling()) + style(); + return partByColumn(column)->formatList; } - switch(role) { - case ChatLineModel::DisplayRole: return part->plainText; - case ChatLineModel::FormatRole: return QVariant::fromValue(part->formatList); + inline const ChatLineModel::WrapList &wrapList() { + if(needsStyling()) + style(); + if(_wrapList.isEmpty()) + computeWrapList(); + return _wrapList; } - return MessageModelItem::data(column, role); +private: + inline void style() { + QtUiStyle::StyledMessage m = QtUi::style()->styleMessage(*_msgBuffer); + + timestamp = new ChatLinePart(m.timestamp.plainText, m.timestamp.formatList); + sender = new ChatLinePart(m.sender.plainText, m.sender.formatList); + contents = new ChatLinePart(m.contents.plainText, m.contents.formatList); + + delete _msgBuffer; + _msgBuffer = 0; + } + + inline void computeWrapList() { + if(contents->plainText.isEmpty()) + return; + + enum Mode { SearchStart, SearchEnd }; + + QList wplist; // use a temp list which we'll later copy into a QVector for efficiency + QTextBoundaryFinder finder(QTextBoundaryFinder::Word, contents->plainText.unicode(), contents->plainText.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(contents->plainText); + QTextOption option; + option.setWrapMode(QTextOption::NoWrap); + layout.setTextOption(option); + + layout.setAdditionalFormats(QtUi::style()->toTextLayoutList(contents->formatList, contents->plainText.length())); + layout.beginLayout(); + QTextLine line = layout.createLine(); + line.setNumColumns(contents->plainText.length()); + layout.endLayout(); + + do { + idx = finder.toNextBoundary(); + if(idx < 0) { + idx = contents->plainText.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() == contents->plainText.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); + } + } + + ChatLineModel::WrapList _wrapList; + Message *_msgBuffer; + ChatLinePart *timestamp, *sender, *contents; + + static unsigned char *TextBoundaryFinderBuffer; + static int TextBoundaryFinderBufferSize; +}; + +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)) +{ } -bool ChatLineModelItem::setData(int column, const QVariant &value, int role) { - return false; +ChatLineModelItem::~ChatLineModelItem() { + delete _data; } + +QVariant ChatLineModelItem::data(int column, int role) const { + if(column < ChatLineModel::TimestampColumn || column > ChatLineModel::ContentsColumn) + return MessageModelItem::data(column, role); + MessageModel::ColumnType columnType = (MessageModel::ColumnType)column; + + switch(role) { + case ChatLineModel::DisplayRole: + return _data->plainText(columnType); + case ChatLineModel::FormatRole: + return QVariant::fromValue(_data->formatList(columnType)); + case ChatLineModel::WrapListRole: + if(columnType != ChatLineModel::ContentsColumn) + return QVariant(); + return QVariant::fromValue(_data->wrapList()); + } + return MessageModelItem::data(column, role); +} +