#include "qtui.h"
#include "uistyle.h"
-ChatLineModelItem::ChatLineModelItem(const Message &msg) : MessageModelItem(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;
+
+unsigned char *ChatLineModelItem::TextBoundaryFinderBuffer = (unsigned char *)malloc(512 * sizeof(HB_CharAttributes_Dummy));
+int ChatLineModelItem::TextBoundaryFinderBufferSize = 512 * (sizeof(HB_CharAttributes_Dummy) / sizeof(unsigned char));
+
+struct ChatLineModelItemPrivate {
+ ChatLineModel::WrapList wrapList;
+};
+
+ChatLineModelItem::ChatLineModelItem(const Message &msg)
+ : MessageModelItem(msg),
+ _data(new ChatLineModelItemPrivate)
+{
QtUiStyle::StyledMessage m = QtUi::style()->styleMessage(msg);
_timestamp.plainText = m.timestamp.plainText;
_timestamp.formatList = m.timestamp.formatList;
_sender.formatList = m.sender.formatList;
_contents.formatList = m.contents.formatList;
-
- computeWrapList();
}
-
QVariant ChatLineModelItem::data(int column, int role) const {
- const ChatLinePart *part;
+ const ChatLinePart *part = 0;
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);
+ case ChatLineModel::TimestampColumn:
+ part = &_timestamp;
+ break;
+ case ChatLineModel::SenderColumn:
+ part = &_sender;
+ break;
+ case ChatLineModel::ContentsColumn:
+ part = &_contents;
+ break;
+ default:
+ return MessageModelItem::data(column, role);
}
switch(role) {
- case ChatLineModel::DisplayRole:
- return part->plainText;
- case ChatLineModel::FormatRole:
- return QVariant::fromValue<UiStyle::FormatList>(part->formatList);
- case ChatLineModel::WrapListRole:
- if(column != ChatLineModel::ContentsColumn) return QVariant();
- return QVariant::fromValue<ChatLineModel::WrapList>(_wrapList);
+ case ChatLineModel::DisplayRole:
+ return part->plainText;
+ case ChatLineModel::FormatRole:
+ return QVariant::fromValue<UiStyle::FormatList>(part->formatList);
+ case ChatLineModel::WrapListRole:
+ if(column != ChatLineModel::ContentsColumn)
+ return QVariant();
+ if(_data->wrapList.isEmpty())
+ computeWrapList();
+ return QVariant::fromValue<ChatLineModel::WrapList>(_data->wrapList);
}
-
return MessageModelItem::data(column, role);
}
-bool ChatLineModelItem::setData(int column, const QVariant &value, int role) {
- return false;
-}
-
-// compute the width of a text snippet
-qreal ChatLineModelItem::snippetWidth(int start, int end, QFontMetricsF *&metrics, int &formatListIdx, int &formatEnd) {
- qreal width = 0;
- while(start < end) {
- if(formatEnd <= start) {
- formatListIdx++;
- formatEnd = _contents.formatList.count() > formatListIdx+1 ? _contents.formatList[formatListIdx+1].first
- : _contents.plainText.length();
- metrics = QtUi::style()->fontMetrics(_contents.formatList[formatListIdx].second);
- Q_ASSERT(formatEnd > start);
- }
- int i = qMin(end, formatEnd);
- width += metrics->width(_contents.plainText.mid(start, i - start));
- start = i;
- }
- return width;
-}
+void ChatLineModelItem::computeWrapList() const {
+ if(_contents.plainText.isEmpty())
+ return;
-void ChatLineModelItem::computeWrapList() {
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, _contents.plainText);
- int idx, oldidx;
- qreal pxpos = 0;
- int flistidx = -1;
- int fmtend = -1;
- bool wordStart = false; bool wordEnd = false;
- QFontMetricsF *metrics = 0;
+ 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;
+ int 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 = finder.boundaryReasons().testFlag(QTextBoundaryFinder::StartWord);
- wordEnd = finder.boundaryReasons().testFlag(QTextBoundaryFinder::EndWord);
+ 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);
+ }
- //qDebug() << wordStart << wordEnd << _contents.plainText.left(idx) << _contents.plainText.mid(idx);
+ //if(flg) qDebug() << idx << mode << wordStart << wordEnd << _contents.plainText.left(idx) << _contents.plainText.mid(idx);
- if(mode == SearchEnd || !wordStart && wordEnd) {
+ if(mode == SearchEnd || (!wordStart && wordEnd)) {
if(wordStart || !wordEnd) continue;
oldidx = idx;
mode = SearchStart;
continue;
}
- // mode == SearchStart
- word.width = snippetWidth(word.start, oldidx, metrics, flistidx, fmtend);
- word.trailing = snippetWidth(oldidx, idx, metrics, flistidx, fmtend);
+ int wordendx = line.cursorToX(oldidx);
+ int trailingendx = line.cursorToX(idx);
+ word.width = wordendx - wordstartx;
+ word.trailing = trailingendx - wordendx;
+ wordstartx = trailingendx;
wplist.append(word);
if(wordStart) {
word.start = idx;
mode = SearchEnd;
}
- } while(finder.isAtBoundary());
+ // 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());
+ _data->wrapList.resize(wplist.count());
for(int i = 0; i < wplist.count(); i++) {
- _wrapList[i] = wplist.at(i);
+ _data->wrapList[i] = wplist.at(i);
}
}
projects / quassel.git / blobdiff