325 lines
9.6 KiB
C++
325 lines
9.6 KiB
C++
/******************************************************/
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/* Routines for locating an element of a schematic. */
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/******************************************************/
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#include "fctsys.h"
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#include "common.h"
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#include "trigo.h"
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#include "macros.h"
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#include "class_sch_screen.h"
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#include "general.h"
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#include "protos.h"
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#include "class_library.h"
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#include "sch_bus_entry.h"
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#include "sch_marker.h"
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#include "sch_junction.h"
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#include "sch_component.h"
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#include "sch_line.h"
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#include "sch_no_connect.h"
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#include "sch_polyline.h"
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#include "sch_sheet.h"
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#include "lib_pin.h"
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#include "template_fieldnames.h"
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static SCH_ITEM* LastSnappedStruct = NULL;
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static bool SnapPoint2( const wxPoint& aPosRef, int SearchMask, SCH_ITEM* DrawList );
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/**
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* Search the smaller (considering its area) component under the mouse
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* cursor or the pcb cursor
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*
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* If more than 1 component is found, a pointer to the smaller component is
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* returned
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*/
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SCH_COMPONENT* LocateSmallestComponent( SCH_SCREEN* Screen )
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{
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SCH_COMPONENT* component = NULL, * lastcomponent = NULL;
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SCH_ITEM* DrawList;
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EDA_Rect BoundaryBox;
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float sizeref = 0, sizecurr;
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DrawList = Screen->GetDrawItems();
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while( DrawList )
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{
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if( !SnapPoint2( Screen->RefPos( true ), COMPONENT_T, DrawList ) )
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{
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if( !SnapPoint2( Screen->GetCrossHairPosition(), COMPONENT_T, DrawList ) )
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break;
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}
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component = (SCH_COMPONENT*) LastSnappedStruct;
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DrawList = component->Next();
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if( lastcomponent == NULL ) // First time a component is located
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{
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lastcomponent = component;
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BoundaryBox = lastcomponent->GetBoundingBox();
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sizeref = ABS( (float) BoundaryBox.GetWidth() * BoundaryBox.GetHeight() );
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}
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else
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{
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BoundaryBox = component->GetBoundingBox();
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sizecurr = ABS( (float) BoundaryBox.GetWidth() * BoundaryBox.GetHeight() );
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if( sizeref > sizecurr ) // a smallest component is found
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{
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sizeref = sizecurr;
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lastcomponent = component;
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}
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}
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}
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return lastcomponent;
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}
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/* Search an item at pos refpos
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* SearchMask = (bitwise OR):
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* COMPONENT_T
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* WIRE_T
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* BUS_T
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* BUS_ENTRY_T
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* JUNCTION_T
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* DRAW_ITEM_T
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* TEXT_T
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* LABEL_T
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* SHEETITEM
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* MARKER_T
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* NO_CONNECT_T
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* SEARCH_PINITEM
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* SHEETLABEL_T
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* FIELDCMPITEM
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*
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* if EXCLUDE_ENDPOINTS_T is set, in wire or bus search and locate,
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* start and end points are not included in search
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* if ENDPOINTS_ONLY_T is set, in wire or bus search and locate,
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* only start and end points are included in search
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*
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*
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* Return:
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* pointer on item found or NULL
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*
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*/
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SCH_ITEM* PickStruct( const wxPoint& refpos, SCH_SCREEN* screen, int SearchMask )
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{
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if( screen == NULL || screen->GetDrawItems() == NULL )
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return NULL;
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if( SnapPoint2( refpos, SearchMask, screen->GetDrawItems() ) )
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{
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return LastSnappedStruct;
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}
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return NULL;
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}
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/*****************************************************************************
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* Routine to search all objects for the closest point to a given point, in *
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* drawing space, and snap it to that points if closer than SnapDistance. *
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* Note we use L1 norm as distance measure, as it is the fastest. *
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* This routine updates LastSnappedStruct to the last object used in to snap *
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* a point. This variable is global to this module only (see above). *
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* The routine returns true if point was snapped. *
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*****************************************************************************/
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bool SnapPoint2( const wxPoint& aPosRef, int SearchMask, SCH_ITEM* DrawList )
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{
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for( ; DrawList != NULL; DrawList = DrawList->Next() )
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{
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int hitminDist = MAX( g_DrawDefaultLineThickness, 3 );
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switch( DrawList->Type() )
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{
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case SCH_POLYLINE_T:
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#undef STRUCT
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#define STRUCT ( (SCH_POLYLINE*) DrawList )
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if( !( SearchMask & (DRAW_ITEM_T | WIRE_T | BUS_T) ) )
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break;
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for( unsigned i = 0; i < STRUCT->GetCornerCount() - 1; i++ )
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{
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if( TestSegmentHit( aPosRef, STRUCT->m_PolyPoints[i],
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STRUCT->m_PolyPoints[i + 1], hitminDist ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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}
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break;
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case SCH_LINE_T:
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#undef STRUCT
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#define STRUCT ( (SCH_LINE*) DrawList )
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if( !( SearchMask & (DRAW_ITEM_T | WIRE_T | BUS_T) ) )
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break;
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if( TestSegmentHit( aPosRef, STRUCT->m_Start, STRUCT->m_End, 0 ) )
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{
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if( ( ( SearchMask & DRAW_ITEM_T ) && ( STRUCT->GetLayer() == LAYER_NOTES ) )
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|| ( ( SearchMask & WIRE_T ) && ( STRUCT->GetLayer() == LAYER_WIRE ) )
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|| ( ( SearchMask & BUS_T ) && ( STRUCT->GetLayer() == LAYER_BUS ) ) )
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{
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if( SearchMask & EXCLUDE_ENDPOINTS_T && STRUCT->IsEndPoint( aPosRef ) )
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break;
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if( SearchMask & ENDPOINTS_ONLY_T && !STRUCT->IsEndPoint( aPosRef ) )
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break;
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LastSnappedStruct = DrawList;
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return true;
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}
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}
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break;
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case SCH_BUS_ENTRY_T:
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#undef STRUCT
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#define STRUCT ( (SCH_BUS_ENTRY*) DrawList )
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if( !( SearchMask & (BUS_ENTRY_T) ) )
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break;
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if( TestSegmentHit( aPosRef, STRUCT->m_Pos, STRUCT->m_End(), hitminDist ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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case SCH_JUNCTION_T:
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#undef STRUCT
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#define STRUCT ( (SCH_JUNCTION*) DrawList )
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if( !(SearchMask & JUNCTION_T) )
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break;
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if( STRUCT->HitTest( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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case SCH_NO_CONNECT_T:
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#undef STRUCT
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#define STRUCT ( (SCH_NO_CONNECT*) DrawList )
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if( !(SearchMask & NO_CONNECT_T) )
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break;
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if( STRUCT->HitTest( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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case SCH_MARKER_T:
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{
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#undef STRUCT
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#define STRUCT ( (SCH_MARKER*) DrawList )
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if( !(SearchMask & MARKER_T) )
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break;
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if( STRUCT->HitTest( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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}
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case SCH_TEXT_T:
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#undef STRUCT
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#define STRUCT ( (SCH_TEXT*) DrawList )
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if( !( SearchMask & TEXT_T) )
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break;
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if( STRUCT->HitTest( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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case SCH_LABEL_T:
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case SCH_GLOBAL_LABEL_T:
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case SCH_HIERARCHICAL_LABEL_T:
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#undef STRUCT
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#define STRUCT ( (SCH_TEXT*) DrawList ) // SCH_TEXT is the base
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// class of these labels
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if( !(SearchMask & LABEL_T) )
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break;
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if( STRUCT->HitTest( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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case SCH_COMPONENT_T:
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if( !( SearchMask & (COMPONENT_T | FIELD_T) ) )
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break;
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if( SearchMask & FIELD_T )
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{
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SCH_COMPONENT* DrawLibItem = (SCH_COMPONENT*) DrawList;
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for( int i = REFERENCE; i < DrawLibItem->GetFieldCount(); i++ )
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{
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SCH_FIELD* field = DrawLibItem->GetField( i );
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if( field->m_Attributs & TEXT_NO_VISIBLE )
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continue;
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if( field->IsVoid() )
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continue;
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EDA_Rect BoundaryBox = field->GetBoundingBox();
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if( BoundaryBox.Contains( aPosRef ) )
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{
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LastSnappedStruct = field;
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return true;
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}
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}
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}
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else
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{
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#undef STRUCT
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#define STRUCT ( (SCH_COMPONENT*) DrawList )
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EDA_Rect BoundaryBox = STRUCT->GetBoundingBox();
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if( BoundaryBox.Contains( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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}
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break;
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case SCH_SHEET_T:
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#undef STRUCT
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#define STRUCT ( (SCH_SHEET*) DrawList )
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if( !(SearchMask & SHEET_T) )
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break;
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if( STRUCT->HitTest( aPosRef ) )
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{
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LastSnappedStruct = DrawList;
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return true;
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}
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break;
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default:
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{
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wxString msg;
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msg.Printf( wxT( "SnapPoint2() error: unexpected struct type %d (" ),
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DrawList->Type() );
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msg << DrawList->GetClass() << wxT( ")" );
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wxMessageBox( msg );
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break;
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}
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}
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}
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return FALSE;
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}
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