| /* |
| * 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; |
| } |