From now on dragged widgets will be re-aligned on drop. They will find the nearest hotspot of the group they are dropped into, and calculate an offset so they will align to the hotspot and yet remain where they were dropped.

This commit is contained in:
dfighter1985 2014-09-29 20:29:04 +02:00
parent 8decbc9eaf
commit 153730379e
3 changed files with 102 additions and 1 deletions

View file

@ -518,6 +518,15 @@ namespace NLGUI
_YReal += y;
}
/// Retrieves the coordinates of the specified hotspot
void getHSCoords( const THotSpot &hs, sint32 &x, sint32 &y ) const;
/// Tells which hotspot is the closest to the specified element
void getClosestHotSpot( const CInterfaceElement *other, THotSpot &hs );
/// Aligns the element to the other element specified
void alignTo( CInterfaceElement *other );
protected:
bool editorSelected;

View file

@ -1594,6 +1594,97 @@ namespace NLGUI
}
}
void CInterfaceElement::getHSCoords( const THotSpot &hs, sint32 &x, sint32 &y ) const
{
x = _XReal;
y = _YReal;
if( ( hs & Hotspot_Mx ) != 0 )
y += _HReal / 2;
else
if( ( hs & Hotspot_Tx ) != 0 )
y += _HReal;
if( ( hs & Hotspot_xM ) != 0 )
x += _WReal / 2;
else
if( ( hs & Hotspot_xR ) != 0 )
x += _WReal;
}
void CInterfaceElement::getClosestHotSpot( const CInterfaceElement *other, THotSpot &hs )
{
/// Iterate over the following hotspots, calculate the distance and store the closest
static THotSpot hslist[] =
{
Hotspot_BL,
Hotspot_BR,
Hotspot_MM,
Hotspot_TL,
Hotspot_TR
};
int c = sizeof( hslist ) / sizeof( THotSpot );
int x,y,ox,oy,vx,vy;
float d;
float closestd = 9999999.0f;
THotSpot closestHS = Hotspot_TR;
for( int i = 0; i < c; i++ )
{
other->getHSCoords( hslist[ i ], ox, oy );
getHSCoords( hslist[ i ], x, y );
// Make a vector between the two hotspots
vx = x - ox;
vy = y - oy;
// Calculate length
d = sqrt( pow( vx, 2.0f ) + pow( vy, 2.0f ) );
// If these hotspots are the closest, store the hotspot
if( d < closestd )
{
closestd = d;
closestHS = hslist[ i ];
}
}
hs = closestHS;
}
void CInterfaceElement::alignTo( CInterfaceElement *other )
{
if( other == this )
return;
// Check which hotspot is the closest
THotSpot hs;
other->getClosestHotSpot( this, hs );
// Get the hotspot coordinates
sint32 x, y, ox, oy;
getHSCoords( hs, x, y );
other->getHSCoords( hs, ox, oy );
// Calculate the difference between the hotspot we found and our current position,
sint32 dx = ox - x;
sint32 dy = oy - y;
// This difference is our offset, so we remain in the same position
setX( -1 * dx );
setY( -1 * dy );
setPosRef( hs );
setParentPosRef( hs );
invalidateCoords();
}
CStringMapper* CStringShared::_UIStringMapper = NULL;

View file

@ -2683,7 +2683,8 @@ namespace NLGUI
e->setParentSize( g );
g->addElement( e );
e->setName( "==MARKED==" );
e->alignTo( g );
//e->setName( "==MARKED==" );
draggedElement = NULL;