head	1.3;
access;
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locks; strict;
comment	@// @;


1.3
date	2005.08.24.23.13.50;	author behdad;	state Exp;
branches;
next	1.2;
commitid	5379430cff294567;

1.2
date	2005.08.19.20.37.33;	author behdad;	state Exp;
branches;
next	1.1;
commitid	68a54306430a4567;

1.1
date	2005.07.01.19.49.07;	author cworth;	state Exp;
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next	;
commitid	3eec42c59e334567;


desc
@@


1.3
log
@2005-08-24  Behdad Esfahbod  <behdad@@behdad.org>

        * qcairowidget.cpp: Use Qt platform-specific wrappers instead of Xlib.
        Patch from Mauricio Piacentini.
@
text
@#include "qcairowidget.h"

QCairoWidget::QCairoWidget( QWidget *parent, const char *name )
    : QWidget( parent, name )
{
    setDoubleBuffered( true );
    m_surf = cairo_xlib_surface_create ((Display *) x11AppDisplay(), (Drawable) handle(), (Visual *) x11Visual(), width(), height() );
    m_cr = cairo_create(m_surf);
    cairo_surface_destroy(m_surf);
}

QCairoWidget::~QCairoWidget()
{
    cairo_destroy( m_cr );
    m_cr = 0;
}

void QCairoWidget::setDoubleBuffered( bool db )
{
    m_doubleBuffer = db;
    if ( m_doubleBuffer )
        setBackgroundMode( Qt::NoBackground );
}

void QCairoWidget::cairoPaint( cairo_t *, const QRect & )
{

}

void QCairoWidget::paintEvent( QPaintEvent *e )
{
    //the save/restore is a little silly...
    cairo_save( m_cr );

    Display *dpy = x11AppDisplay();
    Drawable drw = handle();

    if ( m_doubleBuffer ) {
        m_buffer = QPixmap( size() );
        m_buffer.fill( this, 0, 0 );
        dpy = m_buffer.x11AppDisplay();
        drw = m_buffer.handle();
    }

    m_surf = cairo_get_target (m_cr);
    cairo_xlib_surface_set_drawable (m_surf, drw, width(), height());

    cairoPaint( m_cr, e->rect() );

    if ( cairo_status( m_cr ) != CAIRO_STATUS_SUCCESS ) {
        qDebug("Cairo is unhappy: %s\n", cairo_status_to_string( cairo_status( m_cr ) ) );
    }

    if ( m_doubleBuffer )
        bitBlt( this, 0, 0, &m_buffer );

    cairo_restore( m_cr );
}
@


1.2
log
@2005-08-19  Behdad Esfahbod  <behdad@@behdad.org>

        * Updated to latest Cairo interface.  Patch from Mauricio Piacentini.
@
text
@d7 1
a7 5
    
    Display *dpy = x11AppDisplay();
    Drawable drw = handle();
    m_surf = cairo_xlib_surface_create (dpy, drw, 
                DefaultVisual (dpy, DefaultScreen (dpy)), width(), height() );
@


1.1
log
@
        From 2005-01-25 Zack Rusin <zack@@kde.org>:

        * .cvsignore:
        * controlwidgetbase.ui:
        * mainwindow.cpp:
        * mainwindow.h:
        * qcairo.cpp:
        * qcairo.h:
        * qcairo.pro:
        * qcairowidget.cpp:
        * qcairowidget.h:
        * qkapow.cpp:
        * qkapow.h:

        1) I created a QCairoWidget which has a
        virtual void cairoPaint(cairo_t *)
        method which essentially replaces the QWidget::paintEvent. It's done
        essentially to enable people to just take the widget, stick it in their
        app and just use Cairo (either duble-buffered or not).
        2) Instead of the old demo code it uses now kapow. It's a little bit
        more attractive and nicely shows how to use QCairoWidget.
@
text
@d7 7
a13 1
    m_cr = cairo_create();
d49 2
a50 1
    cairo_set_target_drawable( m_cr, dpy, drw );
d54 2
a55 3
    if ( cairo_status( m_cr ) ) {
	qDebug("Cairo is unhappy: %s\n", cairo_status_string( m_cr ) );
	exit(0);
@