| /* |
| * Rectangle-related functions |
| * |
| * Copyright 1993, 1996 Alexandre Julliard |
| * |
| */ |
| |
| #include "winuser.h" |
| |
| |
| /*********************************************************************** |
| * SetRect16 (USER.72) |
| */ |
| void WINAPI SetRect16( LPRECT16 rect, INT16 left, INT16 top, |
| INT16 right, INT16 bottom ) |
| { |
| rect->left = left; |
| rect->right = right; |
| rect->top = top; |
| rect->bottom = bottom; |
| } |
| |
| |
| /*********************************************************************** |
| * SetRect32 (USER32.499) |
| */ |
| BOOL WINAPI SetRect( LPRECT rect, INT left, INT top, |
| INT right, INT bottom ) |
| { |
| rect->left = left; |
| rect->right = right; |
| rect->top = top; |
| rect->bottom = bottom; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * SetRectEmpty16 (USER.73) |
| */ |
| void WINAPI SetRectEmpty16( LPRECT16 rect ) |
| { |
| rect->left = rect->right = rect->top = rect->bottom = 0; |
| } |
| |
| |
| /*********************************************************************** |
| * SetRectEmpty32 (USER32.500) |
| */ |
| BOOL WINAPI SetRectEmpty( LPRECT rect ) |
| { |
| rect->left = rect->right = rect->top = rect->bottom = 0; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * CopyRect16 (USER.74) |
| */ |
| BOOL16 WINAPI CopyRect16( RECT16 *dest, const RECT16 *src ) |
| { |
| *dest = *src; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * CopyRect32 (USER32.62) |
| */ |
| BOOL WINAPI CopyRect( RECT *dest, const RECT *src ) |
| { |
| *dest = *src; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * IsRectEmpty16 (USER.75) |
| */ |
| BOOL16 WINAPI IsRectEmpty16( const RECT16 *rect ) |
| { |
| return ((rect->left == rect->right) || (rect->top == rect->bottom)); |
| } |
| |
| |
| /*********************************************************************** |
| * IsRectEmpty32 (USER32.347) |
| */ |
| BOOL WINAPI IsRectEmpty( const RECT *rect ) |
| { |
| return ((rect->left == rect->right) || (rect->top == rect->bottom)); |
| } |
| |
| |
| /*********************************************************************** |
| * PtInRect16 (USER.76) |
| */ |
| BOOL16 WINAPI PtInRect16( const RECT16 *rect, POINT16 pt ) |
| { |
| return ((pt.x >= rect->left) && (pt.x < rect->right) && |
| (pt.y >= rect->top) && (pt.y < rect->bottom)); |
| } |
| |
| |
| /*********************************************************************** |
| * PtInRect32 (USER32.424) |
| */ |
| BOOL WINAPI PtInRect( const RECT *rect, POINT pt ) |
| { |
| return ((pt.x >= rect->left) && (pt.x < rect->right) && |
| (pt.y >= rect->top) && (pt.y < rect->bottom)); |
| } |
| |
| |
| /*********************************************************************** |
| * OffsetRect16 (USER.77) |
| */ |
| void WINAPI OffsetRect16( LPRECT16 rect, INT16 x, INT16 y ) |
| { |
| rect->left += x; |
| rect->right += x; |
| rect->top += y; |
| rect->bottom += y; |
| } |
| |
| |
| /*********************************************************************** |
| * OffsetRect32 (USER32.406) |
| */ |
| BOOL WINAPI OffsetRect( LPRECT rect, INT x, INT y ) |
| { |
| rect->left += x; |
| rect->right += x; |
| rect->top += y; |
| rect->bottom += y; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * InflateRect16 (USER.78) |
| */ |
| void WINAPI InflateRect16( LPRECT16 rect, INT16 x, INT16 y ) |
| { |
| rect->left -= x; |
| rect->top -= y; |
| rect->right += x; |
| rect->bottom += y; |
| } |
| |
| |
| /*********************************************************************** |
| * InflateRect32 (USER32.321) |
| */ |
| BOOL WINAPI InflateRect( LPRECT rect, INT x, INT y ) |
| { |
| rect->left -= x; |
| rect->top -= y; |
| rect->right += x; |
| rect->bottom += y; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * IntersectRect16 (USER.79) |
| */ |
| BOOL16 WINAPI 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 (USER32.327) |
| */ |
| BOOL WINAPI IntersectRect( LPRECT dest, const RECT *src1, |
| const RECT *src2 ) |
| { |
| if (IsRectEmpty(src1) || IsRectEmpty(src2) || |
| (src1->left >= src2->right) || (src2->left >= src1->right) || |
| (src1->top >= src2->bottom) || (src2->top >= src1->bottom)) |
| { |
| SetRectEmpty( 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 WINAPI 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 (USER32.559) |
| */ |
| BOOL WINAPI UnionRect( LPRECT dest, const RECT *src1, |
| const RECT *src2 ) |
| { |
| if (IsRectEmpty(src1)) |
| { |
| if (IsRectEmpty(src2)) |
| { |
| SetRectEmpty( dest ); |
| return FALSE; |
| } |
| else *dest = *src2; |
| } |
| else |
| { |
| if (IsRectEmpty(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 WINAPI 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 (USER32.194) |
| */ |
| BOOL WINAPI EqualRect( const RECT* rect1, const RECT* rect2 ) |
| { |
| return ((rect1->left == rect2->left) && (rect1->right == rect2->right) && |
| (rect1->top == rect2->top) && (rect1->bottom == rect2->bottom)); |
| } |
| |
| |
| /*********************************************************************** |
| * SubtractRect16 (USER.373) |
| */ |
| BOOL16 WINAPI 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 (USER32.536) |
| */ |
| BOOL WINAPI SubtractRect( LPRECT dest, const RECT *src1, |
| const RECT *src2 ) |
| { |
| RECT tmp; |
| |
| if (IsRectEmpty( src1 )) |
| { |
| SetRectEmpty( dest ); |
| return FALSE; |
| } |
| *dest = *src1; |
| if (IntersectRect( &tmp, src1, src2 )) |
| { |
| if (EqualRect( &tmp, dest )) |
| { |
| SetRectEmpty( 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; |
| } |