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Fix perf issues and crash when showing 1'100'000 items (#9968)

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This commit is contained in:
Guillaume Munch 2016-03-10 01:08:51 +00:00
parent 97521c4ec4
commit b3bed2927e
1 changed files with 27 additions and 27 deletions
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48
src/frontends/qt4/GuiSymbols.cpp
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@ -27,8 +27,6 @@
#include "support/gettext.h" #include "support/gettext.h"
#include <QChar> #include <QChar>
#include <QPixmap>
#include <QListWidgetItem>
#include <QString> #include <QString>
#include <cstdio> #include <cstdio>
@ -195,11 +193,11 @@ QString getBlock(char_type c)
// //
///////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////
class GuiSymbols::Model : public QAbstractItemModel class GuiSymbols::Model : public QAbstractListModel
{ {
public: public:
Model(GuiSymbols * parent) Model(GuiSymbols * parent)
: QAbstractItemModel(parent) : QAbstractListModel(parent)
{} {}
QModelIndex index(int row, int column, QModelIndex const &) const QModelIndex index(int row, int column, QModelIndex const &) const
@ -217,11 +215,6 @@ public:
return symbols_.count(); return symbols_.count();
} }
int columnCount(QModelIndex const &) const
{
return 1;
}
QVariant data(QModelIndex const & index, int role) const QVariant data(QModelIndex const & index, int role) const
{ {
static QString const strCharacter = qt_("Character: "); static QString const strCharacter = qt_("Character: ");
@ -229,30 +222,33 @@ public:
char_type c = symbols_.at(index.row()); char_type c = symbols_.at(index.row());
if (role == Qt::TextAlignmentRole) switch (role) {
case Qt::TextAlignmentRole:
return QVariant(Qt::AlignCenter); return QVariant(Qt::AlignCenter);
case Qt::DisplayRole:
if (role == Qt::DisplayRole)
return toqstr(c); return toqstr(c);
case Qt::ToolTipRole: {
if (role == Qt::ToolTipRole) { char codeName[10];
// FIXME THREAD
static char codeName[10];
sprintf(codeName, "0x%04x", c); sprintf(codeName, "0x%04x", c);
return strCharacter + toqstr(c) + '\n' return strCharacter + toqstr(c) + '\n'
+ strCodePoint + QLatin1String(codeName); + strCodePoint + QLatin1String(codeName);
} }
case Qt::SizeHintRole:
//LYXERR0("role: " << role << " row: " << index.row()); // Fix many symbols not displaying in combination with
return QVariant(); // setUniformItemSizes
return QSize(1000,1000);
default:
return QVariant();
}
} }
void setSymbols(QList<char_type> const & symbols) void setSymbols(QList<char_type> const & symbols)
{ {
QAbstractItemModel::beginResetModel(); beginResetModel();
beginInsertRows(QModelIndex(), 0, symbols.size() - 1);
symbols_ = symbols; symbols_ = symbols;
QAbstractItemModel::endResetModel(); endInsertRows();
endResetModel();
} }
private: private:
@ -277,16 +273,20 @@ GuiSymbols::GuiSymbols(GuiView & lv)
setFocusProxy(symbolsLW); setFocusProxy(symbolsLW);
symbolsLW->setViewMode(QListView::IconMode); symbolsLW->setViewMode(QListView::IconMode);
symbolsLW->setLayoutMode(QListView::Batched);
symbolsLW->setBatchSize(1000);
symbolsLW->setUniformItemSizes(true);
// increase the display size of the symbols a bit // increase the display size of the symbols a bit
QFont font = symbolsLW->font(); QFont font = symbolsLW->font();
const int size = font.pointSize() + 3; const int size = font.pointSize() + 3;
font.setPointSize(size); font.setPointSize(size);
symbolsLW->setFont(font); symbolsLW->setFont(font);
QFontMetrics fm(font); QFontMetrics fm(font);
const int cellHeight = fm.height() + 2; const int cellHeight = fm.height() + 6;
// FIXME: using at least cellHeight because of // FIXME: using at least cellHeight because of
// QFontMetrics::maxWidth() is returning 0 with Qt/Cocoa on Mac OS // QFontMetrics::maxWidth() is returning 0 with Qt/Cocoa on Mac OS
const int cellWidth = max(cellHeight, fm.maxWidth() + 2); const int cellWidth = max(cellHeight - 2, fm.maxWidth() + 4);
symbolsLW->setGridSize(QSize(cellWidth, cellHeight)); symbolsLW->setGridSize(QSize(cellWidth, cellHeight));
symbolsLW->setModel(model_); symbolsLW->setModel(model_);
} }