std::vector<size_t>::const_iterator ZLTextView::nextBreakIterator() const {
ZLTextWordCursor cursor = endCursor();
if (cursor.isNull()) {
cursor = startCursor();
}
if (cursor.isNull()) {
return myTextBreaks.begin();
}
return std::lower_bound(myTextBreaks.begin(), myTextBreaks.end(), cursor.paragraphCursor().index());
}
bool ScrollToHomeAction::isEnabled() const {
if (!isVisible()) {
return false;
}
ZLTextWordCursor cursor = FBReader::Instance().bookTextView().textArea().startCursor();
return cursor.isNull() || !cursor.isStartOfParagraph() || !cursor.paragraphCursor().isFirst();
}
size_t ZLTextView::PositionIndicator::sizeOfTextBeforeParagraph(size_t paragraphIndex) const {
if (myTextView.myModel->kind() == ZLTextModel::TREE_MODEL) {
ZLTextWordCursor cursor = myTextView.startCursor();
if (cursor.isNull()) {
cursor = myTextView.endCursor();
}
if (!cursor.isNull()) {
const ZLTextTreeModel &treeModel = (const ZLTextTreeModel&)*myTextView.myModel;
size_t sum = 0;
for (size_t i = 0; i < paragraphIndex; ++i) {
const ZLTextTreeParagraph *para = (const ZLTextTreeParagraph*)treeModel[i];
if (para->parent()->isOpen()) {
sum += sizeOfParagraph(i);
}
}
return sum;
}
}
return myTextView.myTextSize[paragraphIndex] - myTextView.myTextSize[startTextIndex()];
}
void IfEmptyWordList()
{
if (acwlistcount == 0)
{
ZLTextWordCursor cr = is_footnote_mode() ? footview->textArea().startCursor() : bookview->textArea().startCursor();
int paragraph = !cr.isNull() ? cr.paragraphCursor().index() : 0;
if (acwlistcount + 3 >= acwlistsize)
{
acwlistsize = acwlistsize + (acwlistsize >> 1) + 64;
acwordlist = (SynWordList *)realloc(acwordlist, acwlistsize * sizeof(SynWordList));
}
bool ZLTextAreaController::preparePaintInfo() {
if ((myPaintState == NOTHING_TO_PAINT) || (myPaintState == READY)) {
return false;
}
myArea.myLineInfoCache.insert(myArea.myLineInfos.begin(), myArea.myLineInfos.end());
switch (myPaintState) {
default:
break;
case TO_SCROLL_FORWARD:
if (!myArea.myEndCursor.paragraphCursor().isLast() ||
!myArea.myEndCursor.isEndOfParagraph()) {
ZLTextWordCursor startCursor;
switch (myScrollingMode) {
case NO_OVERLAPPING:
break;
case KEEP_LINES:
startCursor = findLineFromEnd(myOverlappingValue);
break;
case SCROLL_LINES:
startCursor = findLineFromStart(myOverlappingValue);
if (startCursor.isEndOfParagraph()) {
startCursor.nextParagraph();
}
break;
case SCROLL_PERCENTAGE:
startCursor = findPercentFromStart(myOverlappingValue);
break;
}
if (!startCursor.isNull() && (startCursor == myArea.myStartCursor)) {
startCursor = findLineFromStart(1);
}
if (!startCursor.isNull()) {
ZLTextWordCursor endCursor = buildInfos(startCursor);
if (!visiblePageIsEmpty() && ((myScrollingMode != KEEP_LINES) || (endCursor != myArea.myEndCursor))) {
myArea.myStartCursor = startCursor;
myArea.myEndCursor = endCursor;
break;
}
}
myArea.myStartCursor = myArea.myEndCursor;
myArea.myEndCursor = buildInfos(myArea.myStartCursor);
}
break;
case TO_SCROLL_BACKWARD:
if (!myArea.myStartCursor.paragraphCursor().isFirst() || !myArea.myStartCursor.isStartOfParagraph()) {
switch (myScrollingMode) {
case NO_OVERLAPPING:
myArea.myStartCursor = findStart(myArea.myStartCursor, PIXEL_UNIT, myArea.height());
break;
case KEEP_LINES:
{
ZLTextWordCursor endCursor = findLineFromStart(myOverlappingValue);
if (!endCursor.isNull() && (endCursor == myArea.myEndCursor)) {
endCursor = findLineFromEnd(1);
}
if (!endCursor.isNull()) {
ZLTextWordCursor startCursor = findStart(endCursor, PIXEL_UNIT, myArea.height());
myArea.myStartCursor =
(startCursor != myArea.myStartCursor) ?
startCursor : findStart(myArea.myStartCursor, PIXEL_UNIT, myArea.height());
} else {
myArea.myStartCursor = findStart(myArea.myStartCursor, PIXEL_UNIT, myArea.height());
}
break;
}
case SCROLL_LINES:
myArea.myStartCursor = findStart(myArea.myStartCursor, LINE_UNIT, myOverlappingValue);
break;
case SCROLL_PERCENTAGE:
myArea.myStartCursor =
findStart(myArea.myStartCursor, PIXEL_UNIT, myArea.height() * myOverlappingValue / 100);
break;
}
myArea.myEndCursor = buildInfos(myArea.myStartCursor);
if (visiblePageIsEmpty()) {
myArea.myStartCursor = findStart(myArea.myStartCursor, LINE_UNIT, 1);
myArea.myEndCursor = buildInfos(myArea.myStartCursor);
}
}
break;
case START_IS_KNOWN:
myArea.myEndCursor = buildInfos(myArea.myStartCursor);
if (visiblePageIsEmpty()) {
ZLTextWordCursor startCursor = findLineFromStart(1);
if (!startCursor.isNull()) {
myArea.myStartCursor = startCursor;
if (myArea.myStartCursor.isEndOfParagraph()) {
myArea.myStartCursor.nextParagraph();
}
myArea.myEndCursor = buildInfos(myArea.myStartCursor);
}
}
break;
case END_IS_KNOWN:
myArea.myStartCursor = findStart(myArea.myEndCursor, PIXEL_UNIT, myArea.height());
myArea.myEndCursor = buildInfos(myArea.myStartCursor);
break;
}
myPaintState = READY;
myArea.myLineInfoCache.clear();
return true;
}
