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refactor: edit load history when scrolling

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This commit is contained in:
TriKriSta 2019-07-01 14:27:58 +03:00
parent b807998fe9
commit 0a9e72020e
6 changed files with 100 additions and 43 deletions
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68
src/chatlog/chatlog.cpp
View File

@ -363,6 +363,7 @@ void ChatLog::reposition(int start, int end, qreal deltaY)
void ChatLog::insertChatlineAtBottom(ChatLine::Ptr l)
{
numRemove = 0;
if (!l.get())
return;
@ -386,9 +387,14 @@ void ChatLog::insertChatlineAtBottom(ChatLine::Ptr l)
void ChatLog::insertChatlineAtBottom(const QList<ChatLine::Ptr>& newLines)
{
numRemove = 0;
if (newLines.isEmpty())
return;
if (lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
removeFirsts(DEF_NUM_MSG_TO_LOAD);
}
for (ChatLine::Ptr l : newLines) {
l->setRow(lines.size());
l->addToScene(scene);
@ -397,11 +403,17 @@ void ChatLog::insertChatlineAtBottom(const QList<ChatLine::Ptr>& newLines)
}
layout(lines.last()->getRow(), lines.size(), useableWidth());
startResizeWorker();
if (visibleLines.size() > 1) {
startResizeWorker(visibleLines[1]);
} else {
startResizeWorker();
}
}
void ChatLog::insertChatlineOnTop(ChatLine::Ptr l)
{
numRemove = 0;
if (!l.get())
return;
@ -410,6 +422,7 @@ void ChatLog::insertChatlineOnTop(ChatLine::Ptr l)
void ChatLog::insertChatlinesOnTop(const QList<ChatLine::Ptr>& newLines)
{
numRemove = 0;
if (newLines.isEmpty())
return;
@ -429,6 +442,10 @@ void ChatLog::insertChatlinesOnTop(const QList<ChatLine::Ptr>& newLines)
combLines.push_back(l);
}
if (lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
removeLasts(DEF_NUM_MSG_TO_LOAD);
}
// add the old lines
for (ChatLine::Ptr l : lines) {
l->setRow(i++);
@ -440,7 +457,12 @@ void ChatLog::insertChatlinesOnTop(const QList<ChatLine::Ptr>& newLines)
scene->setItemIndexMethod(oldIndexMeth);
// redo layout
startResizeWorker();
if (visibleLines.size() > 1) {
startResizeWorker(visibleLines[1]);
} else {
startResizeWorker();
}
}
bool ChatLog::stickToBottom() const
@ -454,19 +476,22 @@ void ChatLog::scrollToBottom()
verticalScrollBar()->setValue(verticalScrollBar()->maximum());
}
void ChatLog::startResizeWorker()
void ChatLog::startResizeWorker(ChatLine::Ptr anchorLine)
{
if (lines.empty()) {
isScroll = true;
return;
}
// (re)start the worker
if (!workerTimer->isActive()) {
// these values must not be reevaluated while the worker is running
workerStb = stickToBottom();
if (!visibleLines.empty())
workerAnchorLine = visibleLines.first();
if (anchorLine) {
workerAnchorLine = anchorLine;
workerStb = false;
} else {
workerStb = stickToBottom();
}
}
// switch to busy scene displaying the busy notification if there is a lot
@ -653,8 +678,13 @@ void ChatLog::scrollToLine(ChatLine::Ptr line)
if (!line.get())
return;
updateSceneRect();
verticalScrollBar()->setValue(line->sceneBoundingRect().top());
if (workerTimer->isActive()) {
workerAnchorLine = line;
workerStb = false;
} else {
updateSceneRect();
verticalScrollBar()->setValue(line->sceneBoundingRect().top()); // NOTE: start here
}
}
void ChatLog::selectAll()
@ -696,6 +726,7 @@ void ChatLog::removeFirsts(const int num)
{
if (lines.size() > num) {
lines.erase(lines.begin(), lines.begin()+num);
numRemove = num;
} else {
lines.clear();
}
@ -709,11 +740,22 @@ void ChatLog::removeLasts(const int num)
{
if (lines.size() > num) {
lines.erase(lines.end()-num, lines.end());
numRemove = num;
} else {
lines.clear();
}
}
void ChatLog::setScroll(const bool scroll)
{
isScroll = scroll;
}
int ChatLog::getNumRemove() const
{
return numRemove;
}
void ChatLog::forceRelayout()
{
startResizeWorker();
@ -762,6 +804,7 @@ void ChatLog::checkVisibility(bool causedWheelEvent)
}
if (causedWheelEvent) {
qDebug() << "causedWheelEvent";
if (lowerBound != lines.cend() && lowerBound->get()->row == 0) {
emit loadHistoryLower();
} else if (upperBound == lines.cend()) {
@ -905,7 +948,8 @@ void ChatLog::onWorkerTimeout()
// hidden during busy screen
verticalScrollBar()->show();
emit workerTimeoutFinished();
isScroll = true;
emit workerTimeoutFinished();
}
}
@ -972,6 +1016,10 @@ void ChatLog::focusOutEvent(QFocusEvent* ev)
void ChatLog::wheelEvent(QWheelEvent *event)
{
if (!isScroll) {
return;
}
QGraphicsView::wheelEvent(event);
checkVisibility(true);
}

10
src/chatlog/chatlog.h
View File

@ -35,6 +35,8 @@ class QTimer;
class ChatLineContent;
struct ToxFile;
static const auto DEF_NUM_MSG_TO_LOAD = 100;
class ChatLog : public QGraphicsView
{
Q_OBJECT
@ -58,6 +60,8 @@ public:
void reloadTheme();
void removeFirsts(const int num);
void removeLasts(const int num);
void setScroll(const bool scroll);
int getNumRemove() const;
QString getSelectedText() const;
@ -101,7 +105,7 @@ protected:
void updateSceneRect();
void checkVisibility(bool causedWheelEvent = false);
void scrollToBottom();
void startResizeWorker();
void startResizeWorker(ChatLine::Ptr anchorLine = nullptr);
virtual void mouseDoubleClickEvent(QMouseEvent* ev) final override;
virtual void mousePressEvent(QMouseEvent* ev) final override;
@ -165,6 +169,7 @@ private:
int clickCount = 0;
QPoint lastClickPos;
Qt::MouseButton lastClickButton;
bool isScroll{true};
// worker vars
int workerLastIndex = 0;
@ -174,6 +179,9 @@ private:
// layout
QMargins margins = QMargins(10, 10, 10, 10);
qreal lineSpacing = 5.0f;
int numRemove{0};
const int maxMessages{300};
};
#endif // CHATLOG_H

5
src/model/chathistory.cpp
View File

@ -110,9 +110,10 @@ ChatHistory::ChatHistory(Friend& f_, History* history_, const ICoreIdHandler& co
// NOTE: this has to be done _after_ sending all sent messages since initial
// state of the message has to be marked according to our dispatch state
auto firstChatLogIdx = sessionChatLog.getFirstIdx().get() < DEF_NUM_MSG_TO_LOAD
constexpr auto defaultNumMessagesToLoad = 100;
auto firstChatLogIdx = sessionChatLog.getFirstIdx().get() < defaultNumMessagesToLoad
? ChatLogIdx(0)
: sessionChatLog.getFirstIdx() - DEF_NUM_MSG_TO_LOAD;
: sessionChatLog.getFirstIdx() - defaultNumMessagesToLoad;
if (canUseHistory()) {
loadHistoryIntoSessionChatLog(firstChatLogIdx);

2
src/model/ichatlog.h
View File

@ -35,8 +35,6 @@
#include <cassert>
static const auto DEF_NUM_MSG_TO_LOAD = 100;
using ChatLogIdx =
NamedType<size_t, struct ChatLogIdxTag, Orderable, UnderlyingAddable, UnitlessDifferencable, Incrementable>;
Q_DECLARE_METATYPE(ChatLogIdx);

54
src/widget/form/genericchatform.cpp
View File

@ -53,6 +53,8 @@
#include <QStringBuilder>
#include <QtGlobal>
#include <QDebug>
#ifdef SPELL_CHECKING
#include <KF5/SonnetUi/sonnet/spellcheckdecorator.h>
#endif
@ -660,6 +662,7 @@ void GenericChatForm::loadHistory(const QDateTime &time, const LoadHistoryDialog
if (type == LoadHistoryDialog::from) {
loadHistoryFrom(time);
auto msg = messages.cbegin()->second;
chatWidget->setScroll(true);
chatWidget->scrollToLine(msg);
} else {
loadHistoryTo(time);
@ -668,15 +671,10 @@ void GenericChatForm::loadHistory(const QDateTime &time, const LoadHistoryDialog
void GenericChatForm::loadHistoryTo(const QDateTime &time)
{
chatWidget->setScroll(false);
auto end = ChatLogIdx(0);
if (time.isNull()) {
if (messages.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
end = ChatLogIdx(messages.rbegin()->first.get() - DEF_NUM_MSG_TO_LOAD);
chatWidget->removeLasts(DEF_NUM_MSG_TO_LOAD);
removeLastsMessages(DEF_NUM_MSG_TO_LOAD);
} else {
end = messages.begin()->first;
}
end = messages.begin()->first;
} else {
end = firstItemAfterDate(time.date(), chatLog);
}
@ -686,28 +684,27 @@ void GenericChatForm::loadHistoryTo(const QDateTime &time)
begin = ChatLogIdx(end.get() - DEF_NUM_MSG_TO_LOAD);
}
renderMessages(begin, end);
if (begin != end) {
renderMessages(begin, end);
} else {
chatWidget->setScroll(true);
}
}
void GenericChatForm::loadHistoryFrom(const QDateTime &time)
{
chatWidget->setScroll(false);
auto begin = ChatLogIdx(0);
if (time.isNull()) {
if (messages.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
begin = ChatLogIdx(messages.rbegin()->first.get() + DEF_NUM_MSG_TO_LOAD);
chatWidget->removeFirsts(DEF_NUM_MSG_TO_LOAD);
removeFirstsMessages(DEF_NUM_MSG_TO_LOAD);
} else {
begin = messages.rbegin()->first;
}
begin = messages.rbegin()->first;
} else {
begin = firstItemAfterDate(time.date(), chatLog);
}
int add = DEF_NUM_MSG_TO_LOAD;
if (begin.get() + DEF_NUM_MSG_TO_LOAD > chatLog.getNextIdx().get()) {
add = chatLog.getNextIdx().get() - (begin.get() + DEF_NUM_MSG_TO_LOAD);
auto aTest = chatLog.getNextIdx().get();
add = chatLog.getNextIdx().get() - begin.get();
}
auto end = ChatLogIdx(begin.get() + add);
renderMessages(begin, end);
@ -1024,10 +1021,6 @@ void GenericChatForm::handleSearchResult(SearchResult result, SearchDirection di
void GenericChatForm::renderMessage(ChatLogIdx idx)
{
if (chatWidget->getLines().size() >= maxMessages) {
chatWidget->removeFirsts(optimalRemove);
removeFirstsMessages(optimalRemove);
}
renderMessages(idx, idx + 1);
}
@ -1037,6 +1030,11 @@ void GenericChatForm::renderMessages(ChatLogIdx begin, ChatLogIdx end,
QList<ChatLine::Ptr> beforeLines;
QList<ChatLine::Ptr> afterLines;
if (!messages.empty() && !(messages.rbegin()->first == begin || messages.begin()->first == end
|| messages.rbegin()->first.get() + 1 == begin.get())) {
return;
}
for (auto i = begin; i < end; ++i) {
auto chatMessage = getChatMessageForIdx(i, messages);
renderItem(chatLog.at(i), needsToHideName(i), colorizeNames, chatMessage);
@ -1054,8 +1052,13 @@ void GenericChatForm::renderMessages(ChatLogIdx begin, ChatLogIdx end,
}
}
for (auto const& line : afterLines) {
chatWidget->insertChatlineAtBottom(line);
if (beforeLines.isEmpty() && afterLines.isEmpty()) {
chatWidget->setScroll(true);
}
chatWidget->insertChatlineAtBottom(afterLines);
if (chatWidget->getNumRemove()) {
removeFirstsMessages(chatWidget->getNumRemove());
}
if (!beforeLines.empty()) {
@ -1072,6 +1075,9 @@ void GenericChatForm::renderMessages(ChatLogIdx begin, ChatLogIdx end,
}
chatWidget->insertChatlinesOnTop(beforeLines);
if (chatWidget->getNumRemove()) {
removeLastsMessages(chatWidget->getNumRemove());
}
} else if (onCompletion) {
onCompletion();
}
@ -1081,7 +1087,7 @@ void GenericChatForm::goToCurrentDate()
{
chatWidget->clear();
messages.clear();
auto end = ChatLogIdx(chatLog.size() - 1);
auto end = ChatLogIdx(chatLog.size());
auto begin = end.get() > DEF_NUM_MSG_TO_LOAD ? ChatLogIdx(end.get() - DEF_NUM_MSG_TO_LOAD) : ChatLogIdx(0);
renderMessages(begin, end);

4
src/widget/form/genericchatform.h
View File

@ -201,10 +201,6 @@ protected:
SearchPos searchPos;
std::map<ChatLogIdx, ChatMessage::Ptr> messages;
bool colorizeNames = false;
private:
const int maxMessages{300};
const int optimalRemove{50};
};
#endif // GENERICCHATFORM_H