Sweden-Number/misc/rect.c

345 lines
8.5 KiB
C

/*
* Rectangle-related functions
*
* Copyright 1993, 1996 Alexandre Julliard
*
*/
#include "windows.h"
/***********************************************************************
* SetRect16 (USER.72)
*/
void SetRect16(LPRECT16 rect, INT16 left, INT16 top, INT16 right, INT16 bottom)
{
rect->left = left;
rect->right = right;
rect->top = top;
rect->bottom = bottom;
}
/***********************************************************************
* SetRect32 (USER32.498)
*/
void SetRect32(LPRECT32 rect, INT32 left, INT32 top, INT32 right, INT32 bottom)
{
rect->left = left;
rect->right = right;
rect->top = top;
rect->bottom = bottom;
}
/***********************************************************************
* SetRectEmpty16 (USER.73)
*/
void SetRectEmpty16( LPRECT16 rect )
{
rect->left = rect->right = rect->top = rect->bottom = 0;
}
/***********************************************************************
* SetRectEmpty32 (USER32.499)
*/
void SetRectEmpty32( LPRECT32 rect )
{
rect->left = rect->right = rect->top = rect->bottom = 0;
}
/***********************************************************************
* CopyRect16 (USER.74)
*/
BOOL16 CopyRect16( RECT16 *dest, const RECT16 *src )
{
*dest = *src;
return TRUE;
}
/***********************************************************************
* CopyRect32 (USER32.61)
*/
BOOL32 CopyRect32( RECT32 *dest, const RECT32 *src )
{
*dest = *src;
return TRUE;
}
/***********************************************************************
* IsRectEmpty16 (USER.75)
*/
BOOL16 IsRectEmpty16( const RECT16 *rect )
{
return ((rect->left == rect->right) || (rect->top == rect->bottom));
}
/***********************************************************************
* IsRectEmpty32 (USER32.346)
*/
BOOL32 IsRectEmpty32( const RECT32 *rect )
{
return ((rect->left == rect->right) || (rect->top == rect->bottom));
}
/***********************************************************************
* PtInRect16 (USER.76)
*/
BOOL16 PtInRect16( const RECT16 *rect, POINT16 pt )
{
return ((pt.x >= rect->left) && (pt.x < rect->right) &&
(pt.y >= rect->top) && (pt.y < rect->bottom));
}
/***********************************************************************
* PtInRect32 (USER32.423)
*/
BOOL32 PtInRect32( const RECT32 *rect, POINT32 pt )
{
return ((pt.x >= rect->left) && (pt.x < rect->right) &&
(pt.y >= rect->top) && (pt.y < rect->bottom));
}
/***********************************************************************
* OffsetRect16 (USER.77)
*/
void OffsetRect16( LPRECT16 rect, INT16 x, INT16 y )
{
rect->left += x;
rect->right += x;
rect->top += y;
rect->bottom += y;
}
/***********************************************************************
* OffsetRect32 (USER32.405)
*/
void OffsetRect32( LPRECT32 rect, INT32 x, INT32 y )
{
rect->left += x;
rect->right += x;
rect->top += y;
rect->bottom += y;
}
/***********************************************************************
* InflateRect16 (USER.78)
*/
void InflateRect16( LPRECT16 rect, INT16 x, INT16 y )
{
rect->left -= x;
rect->top -= y;
rect->right += x;
rect->bottom += y;
}
/***********************************************************************
* InflateRect32 (USER32.320)
*/
void InflateRect32( LPRECT32 rect, INT32 x, INT32 y )
{
rect->left -= x;
rect->top -= y;
rect->right += x;
rect->bottom += y;
}
/***********************************************************************
* IntersectRect16 (USER.79)
*/
BOOL16 IntersectRect16( LPRECT16 dest, const RECT16 *src1, const RECT16 *src2 )
{
if (IsRectEmpty16(src1) || IsRectEmpty16(src2) ||
(src1->left >= src2->right) || (src2->left >= src1->right) ||
(src1->top >= src2->bottom) || (src2->top >= src1->bottom))
{
SetRectEmpty16( dest );
return FALSE;
}
dest->left = MAX( src1->left, src2->left );
dest->right = MIN( src1->right, src2->right );
dest->top = MAX( src1->top, src2->top );
dest->bottom = MIN( src1->bottom, src2->bottom );
return TRUE;
}
/***********************************************************************
* IntersectRect32 (USER32.326)
*/
BOOL32 IntersectRect32( LPRECT32 dest, const RECT32 *src1, const RECT32 *src2 )
{
if (IsRectEmpty32(src1) || IsRectEmpty32(src2) ||
(src1->left >= src2->right) || (src2->left >= src1->right) ||
(src1->top >= src2->bottom) || (src2->top >= src1->bottom))
{
SetRectEmpty32( dest );
return FALSE;
}
dest->left = MAX( src1->left, src2->left );
dest->right = MIN( src1->right, src2->right );
dest->top = MAX( src1->top, src2->top );
dest->bottom = MIN( src1->bottom, src2->bottom );
return TRUE;
}
/***********************************************************************
* UnionRect16 (USER.80)
*/
BOOL16 UnionRect16( LPRECT16 dest, const RECT16 *src1, const RECT16 *src2 )
{
if (IsRectEmpty16(src1))
{
if (IsRectEmpty16(src2))
{
SetRectEmpty16( dest );
return FALSE;
}
else *dest = *src2;
}
else
{
if (IsRectEmpty16(src2)) *dest = *src1;
else
{
dest->left = MIN( src1->left, src2->left );
dest->right = MAX( src1->right, src2->right );
dest->top = MIN( src1->top, src2->top );
dest->bottom = MAX( src1->bottom, src2->bottom );
}
}
return TRUE;
}
/***********************************************************************
* UnionRect32 (USER32.558)
*/
BOOL32 UnionRect32( LPRECT32 dest, const RECT32 *src1, const RECT32 *src2 )
{
if (IsRectEmpty32(src1))
{
if (IsRectEmpty32(src2))
{
SetRectEmpty32( dest );
return FALSE;
}
else *dest = *src2;
}
else
{
if (IsRectEmpty32(src2)) *dest = *src1;
else
{
dest->left = MIN( src1->left, src2->left );
dest->right = MAX( src1->right, src2->right );
dest->top = MIN( src1->top, src2->top );
dest->bottom = MAX( src1->bottom, src2->bottom );
}
}
return TRUE;
}
/***********************************************************************
* EqualRect16 (USER.244)
*/
BOOL16 EqualRect16( const RECT16* rect1, const RECT16* rect2 )
{
return ((rect1->left == rect2->left) && (rect1->right == rect2->right) &&
(rect1->top == rect2->top) && (rect1->bottom == rect2->bottom));
}
/***********************************************************************
* EqualRect32 (USER32.193)
*/
BOOL32 EqualRect32( const RECT32* rect1, const RECT32* rect2 )
{
return ((rect1->left == rect2->left) && (rect1->right == rect2->right) &&
(rect1->top == rect2->top) && (rect1->bottom == rect2->bottom));
}
/***********************************************************************
* SubtractRect16 (USER.373)
*/
BOOL16 SubtractRect16( LPRECT16 dest, const RECT16 *src1, const RECT16 *src2 )
{
RECT16 tmp;
if (IsRectEmpty16( src1 ))
{
SetRectEmpty16( dest );
return FALSE;
}
*dest = *src1;
if (IntersectRect16( &tmp, src1, src2 ))
{
if (EqualRect16( &tmp, dest ))
{
SetRectEmpty16( dest );
return FALSE;
}
if ((tmp.top == dest->top) && (tmp.bottom == dest->bottom))
{
if (tmp.left == dest->left) dest->left = tmp.right;
else if (tmp.right == dest->right) dest->right = tmp.left;
}
else if ((tmp.left == dest->left) && (tmp.right == dest->right))
{
if (tmp.top == dest->top) dest->top = tmp.bottom;
else if (tmp.bottom == dest->bottom) dest->bottom = tmp.top;
}
}
return TRUE;
}
/***********************************************************************
* SubtractRect32 (USER32.535)
*/
BOOL32 SubtractRect32( LPRECT32 dest, const RECT32 *src1, const RECT32 *src2 )
{
RECT32 tmp;
if (IsRectEmpty32( src1 ))
{
SetRectEmpty32( dest );
return FALSE;
}
*dest = *src1;
if (IntersectRect32( &tmp, src1, src2 ))
{
if (EqualRect32( &tmp, dest ))
{
SetRectEmpty32( dest );
return FALSE;
}
if ((tmp.top == dest->top) && (tmp.bottom == dest->bottom))
{
if (tmp.left == dest->left) dest->left = tmp.right;
else if (tmp.right == dest->right) dest->right = tmp.left;
}
else if ((tmp.left == dest->left) && (tmp.right == dest->right))
{
if (tmp.top == dest->top) dest->top = tmp.bottom;
else if (tmp.bottom == dest->bottom) dest->bottom = tmp.top;
}
}
return TRUE;
}