| 1997 | //----------------------------------------------------------------------------- |
| 1998 | |
| 1999 | void GuiEditCtrl::doControlSnap( const GuiEvent& event, const RectI& selectionBounds, const RectI& selectionBoundsGlobal, Point2I& delta ) |
| 2000 | { |
| 2001 | if( !mSnapToControls || ( !mSnapToEdges && !mSnapToCenters ) ) |
| 2002 | return; |
| 2003 | |
| 2004 | // Allow restricting to just vertical (ALT+SHIFT) or just horizontal (ALT+CTRL) |
| 2005 | // snaps. |
| 2006 | |
| 2007 | bool snapAxisEnabled[ 2 ]; |
| 2008 | |
| 2009 | if( event.modifier & SI_PRIMARY_ALT && event.modifier & SI_SHIFT ) |
| 2010 | snapAxisEnabled[ SnapHorizontal ] = false; |
| 2011 | else |
| 2012 | snapAxisEnabled[ SnapHorizontal ] = true; |
| 2013 | |
| 2014 | if( event.modifier & SI_PRIMARY_ALT && event.modifier & SI_CTRL ) |
| 2015 | snapAxisEnabled[ SnapVertical ] = false; |
| 2016 | else |
| 2017 | snapAxisEnabled[ SnapVertical ] = true; |
| 2018 | |
| 2019 | // Compute snap regions. There is one region centered on and aligned with |
| 2020 | // each of the selection bounds edges plus two regions aligned on the selection |
| 2021 | // bounds center. For the selection bounds origin, we use the point that the |
| 2022 | // selection would be at, if we had already done the mouse drag. |
| 2023 | |
| 2024 | RectI snapRegions[ 2 ][ 3 ]; |
| 2025 | Point2I projectedOrigin( selectionBounds.point + delta ); |
| 2026 | dMemset( snapRegions, 0, sizeof( snapRegions ) ); |
| 2027 | |
| 2028 | for( U32 axis = 0; axis < 2; ++ axis ) |
| 2029 | { |
| 2030 | if( !snapAxisEnabled[ axis ] ) |
| 2031 | continue; |
| 2032 | |
| 2033 | if( mSizingMode == sizingNone || |
| 2034 | ( axis == 0 && mSizingMode & sizingLeft ) || |
| 2035 | ( axis == 1 && mSizingMode & sizingTop ) ) |
| 2036 | snapRegions[ axis ][ 0 ] = getSnapRegion( ( snappingAxis ) axis, projectedOrigin ); |
| 2037 | |
| 2038 | if( mSizingMode == sizingNone ) |
| 2039 | snapRegions[ axis ][ 1 ] = getSnapRegion( ( snappingAxis ) axis, projectedOrigin + Point2I( selectionBounds.extent.x / 2, selectionBounds.extent.y / 2 ) ); |
| 2040 | |
| 2041 | if( mSizingMode == sizingNone || |
| 2042 | ( axis == 0 && mSizingMode & sizingRight ) || |
| 2043 | ( axis == 1 && mSizingMode & sizingBottom ) ) |
| 2044 | snapRegions[ axis ][ 2 ] = getSnapRegion( ( snappingAxis ) axis, projectedOrigin + selectionBounds.extent - Point2I( 1, 1 ) ); |
| 2045 | } |
| 2046 | |
| 2047 | // Find hit controls. |
| 2048 | |
| 2049 | canHitSelectedControls( false ); |
| 2050 | |
| 2051 | if( mSnapToEdges ) |
| 2052 | { |
| 2053 | for( U32 axis = 0; axis < 2; ++ axis ) |
| 2054 | if( snapAxisEnabled[ axis ] ) |
| 2055 | { |
| 2056 | getContentControl()->findHitControls( snapRegions[ axis ][ 0 ], mSnapHits[ axis ], HIT_NoCanHitNoRecurse ); |
nothing calls this directly
no test coverage detected