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fixes flickering in the statusbar

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svn path=/trunk/kdegraphics/kdvi/; revision=196948
This commit is contained in:
Stefan Kebekus 2003-01-02 13:13:09 +00:00
parent eadd5d85e6
commit 23b4c9a248
2 changed files with 35 additions and 15 deletions
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40
dviwin.cpp
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@ -82,6 +82,8 @@ dviWindow::dviWindow(double zoom, int mkpk, QWidget *parent, const char *name )
setFocusPolicy(QWidget::StrongFocus);
setFocus();
connect( &clearStatusBarTimer, SIGNAL(timeout()), this, SLOT(clearStatusBar()) );
// initialize the dvi machinery
dviFile = 0;
@ -747,36 +749,44 @@ void dviWindow::paintEvent(QPaintEvent *e)
}
}
void dviWindow::clearStatusBar(void)
{
emit setStatusBarText( QString::null );
}
void dviWindow::mouseMoveEvent ( QMouseEvent * e )
{
// If no mouse button pressed
if ( e->state() == 0 ) {
QString statusbarMessage;
// go through hyperlinks
for(unsigned int i=0; i<hyperLinkList.size(); i++) {
if (hyperLinkList[i].box.contains(e->pos())) {
statusbarMessage = hyperLinkList[i].linkText;
break;
clearStatusBarTimer.stop();
setCursor(pointingHandCursor);
QString link = hyperLinkList[i].linkText;
if ( link.startsWith("#") )
link = link.remove(0,1);
emit setStatusBarText( i18n("Link to %1").arg(link) );
return;
}
}
if ( statusbarMessage == QString::null)
setCursor(arrowCursor);
else
setCursor(pointingHandCursor);
// go through sourceHyperlinks
// Cursor not over hyperlink? Then let the cursor be the usual arrow
setCursor(arrowCursor);
// But maybe the cursor hovers over a sourceHyperlink?
for(unsigned int i=0; i<sourceHyperLinkList.size(); i++) {
if (sourceHyperLinkList[i].box.contains(e->pos())) {
if ( statusbarMessage != QString::null)
statusbarMessage += " | ";
clearStatusBarTimer.stop();
KStringHandler kstr;
statusbarMessage += i18n("Line %1 of %2").arg(kstr.word(sourceHyperLinkList[i].linkText, "0")).arg(kstr.word(sourceHyperLinkList[i].linkText, "1:"));
break;
QString line = kstr.word(sourceHyperLinkList[i].linkText, "0");
QString file = kstr.word(sourceHyperLinkList[i].linkText, "1:");
emit setStatusBarText( i18n("Link to line %1 of %2").arg(line).arg(file) );
return;
}
}
emit setStatusBarText( statusbarMessage );
if (!clearStatusBarTimer.isActive())
clearStatusBarTimer.start( 200, TRUE ); // clear the statusbar after 200 msec.
return;
}

10
dviwin.h
View file

@ -143,6 +143,10 @@ public slots:
void abortExternalProgramm(void);
bool setFile(QString fname, QString ref = QString::null, bool sourceMarker=true);
/** simply emits "setStatusBarText( QString::null )". This is used
in dviWindow::mouseMoveEvent(), see the explanation there. */;
void clearStatusBar(void);
/** Displays the page of the first argument */
void gotoPage(unsigned int page);
@ -196,6 +200,12 @@ private:
void header_special(QString cp);
void source_special(QString cp);
/* This timer is used to delay clearing of the statusbar. Clearing
the statusbar is delayed to avoid awful flickering when the mouse
moves over a block of text that contains source hyperlinks. The
signal timeout() is connected to the method clearStatusBar() of
*this. */
QTimer clearStatusBarTimer;
QValueVector<DVI_Hyperlink> sourceHyperLinkList; // List of source-hyperlinks, for source-specials
QString *source_href; // If not NULL, the text currently