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fix(chatlog): fix stick to bottom behavior

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This commit fixes the behavior when a message is received while the
chatlog is scrolled to the bottom. With this change, the chatlog will
stick to the bottom when it is scrolled all the way down. If it is
somewhere in the middle (e.g. for search) the chatlog will not change
its position.
This commit is contained in:
sudden6 2020-03-01 03:12:40 +01:00
parent 0b5f751104
commit f2fa601073
No known key found for this signature in database
GPG Key ID: 279509B499E032B9
2 changed files with 15 additions and 15 deletions
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28
src/chatlog/chatlog.cpp
View File

@ -407,10 +407,9 @@ void ChatLog::insertChatlineAtBottom(const QList<ChatLine::Ptr>& newLines)
layout(lines.last()->getRow(), lines.size(), useableWidth());
if (visibleLines.size() > 1) {
startResizeWorker(visibleLines[1]);
} else {
startResizeWorker();
// redo layout only when scrolled down
if(stickToBottom()) {
startResizeWorker(true);
}
}
@ -463,9 +462,9 @@ void ChatLog::insertChatlinesOnTop(const QList<ChatLine::Ptr>& newLines)
// redo layout
if (visibleLines.size() > 1) {
startResizeWorker(visibleLines[1]);
startResizeWorker(stickToBottom(), visibleLines[1]);
} else {
startResizeWorker();
startResizeWorker(stickToBottom());
}
}
@ -481,7 +480,7 @@ void ChatLog::scrollToBottom()
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
void ChatLog::startResizeWorker(ChatLine::Ptr anchorLine)
void ChatLog::startResizeWorker(bool stick, ChatLine::Ptr anchorLine)
{
if (lines.empty()) {
isScroll = true;
@ -491,11 +490,11 @@ void ChatLog::startResizeWorker(ChatLine::Ptr anchorLine)
// (re)start the worker
if (!workerTimer->isActive()) {
// these values must not be reevaluated while the worker is running
if (anchorLine) {
workerAnchorLine = anchorLine;
workerStb = false;
workerStb = stick;
if (stick) {
workerAnchorLine = ChatLine::Ptr();
} else {
workerStb = stickToBottom();
workerAnchorLine = anchorLine;
}
}
@ -765,7 +764,7 @@ int ChatLog::getNumRemove() const
void ChatLog::forceRelayout()
{
startResizeWorker();
startResizeWorker(stickToBottom());
}
void ChatLog::checkVisibility(bool causedWheelEvent)
@ -834,7 +833,7 @@ void ChatLog::resizeEvent(QResizeEvent* ev)
bool stb = stickToBottom();
if (ev->size().width() != ev->oldSize().width()) {
startResizeWorker();
startResizeWorker(stb);
stb = false; // let the resize worker handle it
}
@ -901,8 +900,9 @@ QRectF ChatLog::calculateSceneRect() const
{
qreal bottom = (lines.empty() ? 0.0 : lines.last()->sceneBoundingRect().bottom());
if (typingNotification.get() != nullptr)
if (typingNotification.get() != nullptr) {
bottom += typingNotification->sceneBoundingRect().height() + lineSpacing;
}
return QRectF(-margins.left(), -margins.top(), useableWidth(),
bottom + margins.bottom() + margins.top());

2
src/chatlog/chatlog.h
View File

@ -105,7 +105,7 @@ protected:
void updateSceneRect();
void checkVisibility(bool causedWheelEvent = false);
void scrollToBottom();
void startResizeWorker(ChatLine::Ptr anchorLine = nullptr);
void startResizeWorker(bool stick, ChatLine::Ptr anchorLine = nullptr);
virtual void mouseDoubleClickEvent(QMouseEvent* ev) final override;
virtual void mousePressEvent(QMouseEvent* ev) final override;