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amortise panel load times

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5277 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
John Levon 2002-09-12 00:56:53 +00:00
parent bb2b4dd0b9
commit 938f52dcc4
3 changed files with 34 additions and 12 deletions
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5
src/frontends/qt2/ChangeLog
View File

@ -1,3 +1,8 @@
2002-09-12 John Levon <levon@movementarian.org>
* QMathDialog.h:
* QMathDialog.C: load icon palettes on demand
2002-09-12 John Levon <levon@movementarian.org>
* QMathDialog.C: get the scrollbars right on first show

34
src/frontends/qt2/QMathDialog.C
View File

@ -32,7 +32,7 @@ using std::endl;
class QScrollViewSingle : public QScrollView {
public:
QScrollViewSingle(QWidget * p)
: QScrollView(p) {
: QScrollView(p), w_(0) {
setResizePolicy(Manual);
setHScrollBarMode(AlwaysOff);
setVScrollBarMode(AlwaysOn);
@ -70,6 +70,8 @@ namespace {
latex_ams_misc
};
int const nr_panels = sizeof(panels)/sizeof(panels[0]);
bool panel_initialised[nr_panels];
}
@ -84,10 +86,26 @@ QMathDialog::QMathDialog(QMath * form)
}
for (int i = 0; i < nr_panels; ++i) {
addPanel(panels[i]);
QScrollViewSingle * view = new QScrollViewSingle(symbolsWS);
symbolsWS->addWidget(view, i);
}
// aboutToShow() only fires when != 0 in Qt 2 !
symbolsWS->raiseWidget(0);
symbolsWS->resize(symbolsWS->sizeHint());
addPanel(0);
panel_initialised[0] = true;
connect(symbolsWS, SIGNAL(aboutToShow(int)), this, SLOT(showingPanel(int)));
}
void QMathDialog::showingPanel(int num)
{
if (panel_initialised[num])
return;
addPanel(num);
panel_initialised[num] = true;
}
@ -104,15 +122,11 @@ IconPalette * QMathDialog::makePanel(QWidget * parent, char const ** entries)
}
void QMathDialog::addPanel(char const ** entries)
void QMathDialog::addPanel(int num)
{
static int id = 0;
QScrollViewSingle * view = new QScrollViewSingle(symbolsWS);
IconPalette * p = makePanel(view->viewport(), entries);
QScrollViewSingle * view = static_cast<QScrollViewSingle*>(symbolsWS->visibleWidget());
IconPalette * p = makePanel(view->viewport(), panels[num]);
view->setChild(p);
symbolsWS->addWidget(view, id++);
}

5
src/frontends/qt2/QMathDialog.h
View File

@ -38,6 +38,9 @@ public slots:
virtual void superscriptClicked();
void symbol_clicked(string str);
/// about to show a symbol panel
void showingPanel(int);
protected:
//needed ? virtual void closeEvent(QCloseEvent * e);
@ -46,7 +49,7 @@ private:
IconPalette * makePanel(QWidget * parent, char const ** entries);
/// add a symbol panel
void addPanel(char const ** entries);
void addPanel(int num);
/// owning form
QMath * form_;