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text render fixed when having text blocks that contain only spaces

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This commit is contained in:
John Preston 2016-01-08 11:25:50 +08:00
parent 3078544892
commit a39810a9c5
2 changed files with 23 additions and 26 deletions
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47
Telegram/SourceFiles/gui/text.cpp
View file

@ -1111,6 +1111,15 @@ public:
if (_btype == TextBlockTText) {
TextBlock *t = static_cast<TextBlock*>(b);
if (t->_words.isEmpty()) { // no words in this block, spaces only => layout this block in the same line
last_rPadding += lpadding;
_lineHeight = qMax(_lineHeight, blockHeight);
longWordLine = false;
continue;
}
QFixed f_wLeft = _wLeft; // vars for saving state of the last word start
int32 f_lineHeight = _lineHeight; // f points to the last word-start element of t->_words
for (TextBlock::TextWords::const_iterator j = t->_words.cbegin(), en = t->_words.cend(), f = j; j != en; ++j) {
@ -1166,28 +1175,6 @@ public:
f_wLeft = _wLeft;
f_lineHeight = _lineHeight;
}
if (lpadding > 0) { // no words in this block, spaces only
int32 elidedLineHeight = qMax(_lineHeight, blockHeight);
bool elidedLine = _elideLast && (_y + elidedLineHeight >= _yToElide);
if (elidedLine) {
_lineHeight = elidedLineHeight;
}
ushort nextStart = _blockEnd(_t, i, e);
if (!drawLine(nextStart, i + 1, e)) return;
_y += _lineHeight;
_lineHeight = qMax(0, blockHeight);
_lineStart = nextStart;
_lineStartBlock = blockIndex + 1;
last_rBearing = _rb;
last_rPadding = b->rpadding();
_wLeft = _w;
if (_elideLast && _elideRemoveFromEnd > 0 && (_y + blockHeight >= _yToElide)) {
_wLeft -= _elideRemoveFromEnd;
}
longWordLine = true;
}
continue;
}
@ -2762,8 +2749,8 @@ int32 Text::countHeight(int32 w) const {
longWordLine = true;
continue;
}
widthLeft -= b->f_lpadding();
QFixed newWidthLeft = widthLeft - last_rBearing - (last_rPadding + b->f_width() - _rb);
QFixed lpadding = b->f_lpadding();
QFixed newWidthLeft = widthLeft - lpadding - last_rBearing - (last_rPadding + b->f_width() - _rb);
if (newWidthLeft >= 0) {
last_rBearing = _rb;
last_rPadding = b->f_rpadding();
@ -2777,13 +2764,23 @@ int32 Text::countHeight(int32 w) const {
if (_btype == TextBlockTText) {
TextBlock *t = static_cast<TextBlock*>(b);
if (t->_words.isEmpty()) { // no words in this block, spaces only => layout this block in the same line
last_rPadding += lpadding;
lineHeight = qMax(lineHeight, blockHeight);
longWordLine = false;
continue;
}
QFixed f_wLeft = widthLeft;
int32 f_lineHeight = lineHeight;
for (TextBlock::TextWords::const_iterator j = t->_words.cbegin(), e = t->_words.cend(), f = j; j != e; ++j) {
bool wordEndsHere = (j->width >= 0);
QFixed j_width = wordEndsHere ? j->width : -j->width;
QFixed newWidthLeft = widthLeft - last_rBearing - (last_rPadding + j_width - j->f_rbearing());
QFixed newWidthLeft = widthLeft - lpadding - last_rBearing - (last_rPadding + j_width - j->f_rbearing());
lpadding = 0;
if (newWidthLeft >= 0) {
last_rBearing = j->f_rbearing();
last_rPadding = j->rpadding;

2
Telegram/SourceFiles/history.cpp
View file

@ -6542,7 +6542,7 @@ void HistoryMessage::drawMessageText(Painter &p, QRect trect, uint32 selection)
p.setFont(st::msgFont);
uint16 selectedFrom = (selection == FullSelection) ? 0 : (selection >> 16) & 0xFFFF;
uint16 selectedTo = (selection == FullSelection) ? 0 : selection & 0xFFFF;
_text.draw(p, trect.x(), trect.y(), trect.width(), Qt::AlignLeft, 0, -1, selectedFrom, selectedTo);
_text.draw(p, trect.x(), trect.y(), trect.width(), style::al_left, 0, -1, selectedFrom, selectedTo);
}
void HistoryMessage::destroy() {