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Reducing memory consumption: no reason to store all displayed ChatActions in memory

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This commit is contained in:
apprb 2014-10-25 01:25:28 +09:00
parent 57a995117f
commit 8300f42e02
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GPG Key ID: B001911B5B22FB9B
3 changed files with 23 additions and 15 deletions
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22
src/widget/chatareawidget.cpp
View File

@ -22,6 +22,7 @@
#include <QAbstractTextDocumentLayout>
#include <QCoreApplication>
#include <QDebug>
#include <algorithm>
ChatAreaWidget::ChatAreaWidget(QWidget *parent)
: QTextBrowser(parent)
@ -96,14 +97,14 @@ void ChatAreaWidget::onAnchorClicked(const QUrl &url)
QDesktopServices::openUrl(url);
}
void ChatAreaWidget::insertMessage(ChatAction *msgAction)
void ChatAreaWidget::insertMessage(ChatAction *msgAction, QTextCursor::MoveOperation pos)
{
if (msgAction == nullptr)
return;
checkSlider();
QTextTable *chatTextTable = getMsgTable();
QTextTable *chatTextTable = getMsgTable(pos);
QTextCursor cur = chatTextTable->cellAt(0, 2).firstCursorPosition();
cur.clearSelection();
cur.setKeepPositionOnInsert(true);
@ -115,7 +116,10 @@ void ChatAreaWidget::insertMessage(ChatAction *msgAction)
msgAction->setup(cur, this);
if (msgAction->isInteractive())
messages.append(msgAction);
else
delete msgAction;
}
int ChatAreaWidget::getNumberOfMessages()
@ -136,7 +140,7 @@ void ChatAreaWidget::checkSlider()
lockSliderToBottom = scroll && scroll->value() == scroll->maximum();
}
QTextTable *ChatAreaWidget::getMsgTable()
QTextTable *ChatAreaWidget::getMsgTable(QTextCursor::MoveOperation pos)
{
if (tableFrmt == nullptr)
{
@ -151,7 +155,7 @@ QTextTable *ChatAreaWidget::getMsgTable()
}
QTextCursor tc = textCursor();
tc.movePosition(QTextCursor::End);
tc.movePosition(pos);
QTextTable *chatTextTable = tc.insertTable(1, 5, *tableFrmt);
@ -189,3 +193,13 @@ void ChatAreaWidget::clearChatArea()
insertMessage(message);
}
}
void ChatAreaWidget::insertMessagesTop(QList<ChatAction*> &list)
{
std::reverse(list.begin(), list.end());
for (ChatAction* it : list)
{
insertMessage(it, QTextCursor::Start);
}
}

6
src/widget/chatareawidget.h
View File

@ -29,8 +29,8 @@ class ChatAreaWidget : public QTextBrowser
public:
explicit ChatAreaWidget(QWidget *parent = 0);
virtual ~ChatAreaWidget();
void insertMessage(ChatAction *msgAction);
QList<ChatAction*>& getMesages() {return messages;}
void insertMessage(ChatAction *msgAction, QTextCursor::MoveOperation pos = QTextCursor::End);
void insertMessagesTop(QList<ChatAction *> &list);
int nameColWidth() {return nameWidth;}
void setNameColWidth(int w);
@ -51,7 +51,7 @@ private slots:
private:
void checkSlider();
QTextTable* getMsgTable();
QTextTable* getMsgTable(QTextCursor::MoveOperation pos = QTextCursor::End);
QTextTableFormat* tableFrmt;
QList<ChatAction*> messages;

8
src/widget/form/chatform.cpp
View File

@ -588,18 +588,12 @@ void ChatForm::onLoadHistory()
}
previousName = storedPrevName;
for (ChatAction *ca : chatWidget->getMesages())
historyMessages.append(ca);
int savedSliderPos = chatWidget->verticalScrollBar()->maximum() - chatWidget->verticalScrollBar()->value();
chatWidget->getMesages().clear();
chatWidget->clear();
if (earliestMessage != nullptr)
*earliestMessage = fromTime;
for (ChatAction *ca : historyMessages)
chatWidget->insertMessage(ca);
chatWidget->insertMessagesTop(historyMessages);
savedSliderPos = chatWidget->verticalScrollBar()->maximum() - savedSliderPos;
chatWidget->verticalScrollBar()->setValue(savedSliderPos);