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Gianathem · 8. März 2008

Hi everybody, viele grussen

This i the my first post.

Hi need to move the desktop_fb widget, but i have a problem, i made a panel to do this, with a two slider class to choose H and V offset,

Code

int v_offset = 0, h_offset = 0;
	eConfig::getInstance()->getKey("/extra/off_infobar/h_offset", h_offset );
	eConfig::getInstance()->getKey("/extra/off_infobar/v_offset", v_offset );


	sHor = new eSlider( this, label[0], 0, 50 );
	sHor->setIncrement(2);
	sHor->move( ePoint(5, 50) );
	sHor->resize(eSize( labelWidth , 25) );
	sHor->setHelpText(_("change the horizontal position"));
	sHor->setValue((h_offset+25));
	CONNECT( sHor->changed, eOsdPosition::horChanged );


	sVer = new eSlider( this, label[1], 0, 50 );
	sVer->setIncrement(2);
	sVer->move( ePoint(5, 120) );
	sVer->resize(eSize( labelWidth , 25) );
	sVer->setHelpText(_("change the vertical position"));
	sVer->setValue((v_offset+25));
	CONNECT( sVer->changed, eOsdPosition::verChanged );




void eOsdPosition::horChanged(int i)
{
	i = i - 25;
	lblhor->setText(eString().sprintf("%i",i).c_str());
	int v_offset = sVer->getValue() - 25;
	eZap::getInstance()->getDesktop(eZap::desktopFB)->invalidate( eRect( 0, 0, 720, 576 ), 1);
	eZap::getInstance()->getDesktop(eZap::desktopFB)->move(ePoint(i, v_offset));
}


void eOsdPosition::verChanged(int i)
{
	i = i - 25;
	lblver->setText(eString().sprintf("%i",i).c_str());
	int h_offset = sHor->getValue() - 25;
	eZap::getInstance()->getDesktop(eZap::desktopFB)->invalidate( eRect( 0, 0, 720, 576 ), 1);
	eZap::getInstance()->getDesktop(eZap::desktopFB)->move(ePoint(h_offset, i));
}

Alles anzeigen

when i change the slider value often enigma crash 'segmentation fault',

Anyone could help me?

dbluelle · 10. März 2008

The desktop_fb widget has the size of the whole framebuffer (720x576), so if you move this widget, you have to resize it so that it still fits into the framebuffer. Otherwise the content of the widget may be drawn into memory that doesn't belong to the framebuffer.
So, if you move the widget 10 pixels to the right, you have to set the width 10 pixels smaller.

(I haven't tested this, but IMHO it should work this way )

dbluelle

Gianathem · 10. März 2008

Zitat

Originally posted by dbluelle
The desktop_fb widget has the size of the whole framebuffer (720x576), so if you move this widget, you have to resize it so that it still fits into the framebuffer. Otherwise the content of the widget may be drawn into memory that doesn't belong to the framebuffer.
So, if you move the widget 10 pixels to the right, you have to set the width 10 pixels smaller.

(I haven't tested this, but IMHO it should work this way )

dbluelle

Thank's, now i tried with resize but no way, same problem

Code

void eOsdPosition::verChanged(int i)
{
	i = i - 25;
	lblver->setText(eString().sprintf("%i",i).c_str());
	int h_offset = sHor->getValue() - 25;
 	eZap::getInstance()->getDesktop(eZap::desktopFB)->resize(eSize(720 - abs(h_offset), 576 - abs(i)));
	eZap::getInstance()->getDesktop(eZap::desktopFB)->cmove(ePoint(h_offset, i));
}

dbluelle · 15. März 2008

Well, IMHO you cannot move the widget to coordinates < 0 (that should also lead to writing into memory that doesn't belong to the framebuffer) , so I think your only chance is to move all the child widgets instead of desktop_fb .

dbluelle