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Buffering for the active title. Reduces flicker when resizes make the titlebar

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resize.

svn path=/trunk/kdebase/kwin/; revision=48749
This commit is contained in:
Daniel M. Duley 2000-05-07 20:30:50 +00:00
parent 7c6272e088
commit 2c5bfad0cf
2 changed files with 64 additions and 10 deletions
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69
clients/b2/b2client.cpp
View file

@ -276,11 +276,14 @@ bool B2Titlebar::x11Event(XEvent *e)
return QWidget::x11Event(e);
}
void B2Titlebar::paintEvent(QPaintEvent * /*e*/)
void B2Titlebar::recalcBuffer()
{
QPainter p(this);
QFontMetrics fm(options->font(true));
titleBuffer.resize(width(), height());
QPainter p;
p.begin(&titleBuffer);
QRect t=rect();
bool active = client->isActive();
// black titlebar frame
p.setPen(Qt::black);
@ -290,20 +293,63 @@ void B2Titlebar::paintEvent(QPaintEvent * /*e*/)
// titlebar fill
qDrawShadeRect(&p, 1, 1, t.right()-1, t.height()-1,
options->colorGroup(Options::TitleBar, active),
options->colorGroup(Options::TitleBar, true),
false, 1, 0,
&options->colorGroup(Options::TitleBar, active).
brush(QColorGroup::Button));
&options->colorGroup(Options::TitleBar, true).
brush(QColorGroup::Background));
// and the caption
p.setPen(options->color(Options::Font, active));
p.setFont(options->font(active));
p.setPen(options->color(Options::Font, true));
p.setFont(options->font(true));
t.setX(client->providesContextHelp() ?
client->button[B2Client::BtnHelp]->x()+17 :
client->button[B2Client::BtnSticky]->x()+17);
t.setRight(client->button[B2Client::BtnIconify]->x()-1);
p.drawText(t, AlignLeft | AlignVCenter, client->caption());
p.end();
oldTitle = caption();
}
void B2Titlebar::resizeEvent(QResizeEvent *)
{
recalcBuffer();
repaint(false);
}
void B2Titlebar::paintEvent(QPaintEvent * /*e*/)
{
if(client->isActive())
bitBlt(this, 0, 0, &titleBuffer, 0, 0, titleBuffer.width(),
titleBuffer.height(), Qt::CopyROP, true);
else{
QPainter p(this);
QRect t=rect();
// black titlebar frame
p.setPen(Qt::black);
p.drawLine(0, 0, 0, t.bottom() );
p.drawLine(0, 0, t.right(), 0);
p.drawLine(t.right(), 0, t.right(), t.bottom());
// titlebar fill
qDrawShadeRect(&p, 1, 1, t.right()-1, t.height()-1,
options->colorGroup(Options::TitleBar, false),
false, 1, 0,
&options->colorGroup(Options::TitleBar, false).
brush(QColorGroup::Button));
// and the caption
p.setPen(options->color(Options::Font, false));
p.setFont(options->font(false));
t.setX(client->providesContextHelp() ?
client->button[B2Client::BtnHelp]->x()+17 :
client->button[B2Client::BtnSticky]->x()+17);
t.setRight(client->button[B2Client::BtnIconify]->x()-1);
p.drawText(t, AlignLeft | AlignVCenter, client->caption());
}
}
void B2Titlebar::mouseDoubleClickEvent( QMouseEvent * )
@ -408,6 +454,7 @@ B2Client::B2Client( Workspace *ws, WId w, QWidget *parent,
QColor c = options->colorGroup(Options::TitleBar, isActive()).
color(QColorGroup::Button);
titlebar->setBackgroundColor(c);
titlebar->recalcBuffer();
for(i=0; i < 6; ++i)
button[i]->setBg(c);
@ -450,7 +497,8 @@ void B2Client::captionChange( const QString &)
titleMoveAbs(bar_x_ofs);
doShape();
//repaint();
titlebar->repaint();
titlebar->recalcBuffer();
titlebar->repaint(false);
}
void B2Client::paintEvent( QPaintEvent* e)
@ -669,7 +717,8 @@ void B2Client::slotReset()
button[i]->repaint(false);
}
repaint();
titlebar->repaint();
titlebar->recalcBuffer();
titlebar->repaint(false);
}
void B2Client::unobscureTitlebar()

5
clients/b2/b2client.h
View file

@ -42,6 +42,7 @@ public:
B2Titlebar(B2Client *parent);
~B2Titlebar(){;}
bool isFullyObscured() const {return isfullyobscured;}
void recalcBuffer();
protected:
void paintEvent( QPaintEvent* );
bool x11Event(XEvent *e);
@ -50,6 +51,10 @@ protected:
void mouseReleaseEvent( QMouseEvent * );
void mouseMoveEvent(QMouseEvent *);
void init();
void resizeEvent(QResizeEvent *ev);
QString oldTitle;
KPixmap titleBuffer;
bool set_x11mask;
bool isfullyobscured;
bool shift_move;