375 lines
9.1 KiB
C
375 lines
9.1 KiB
C
/*
|
|
* Rectangle-related functions
|
|
*
|
|
* Copyright 1993, 1996 Alexandre Julliard
|
|
*
|
|
*/
|
|
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "wine/winuser16.h"
|
|
#include "winuser.h"
|
|
|
|
/***********************************************************************
|
|
* SetRect (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI SetRect( LPRECT rect, INT left, INT top,
|
|
INT right, INT bottom )
|
|
{
|
|
if (!rect) return FALSE;
|
|
rect->left = left;
|
|
rect->right = right;
|
|
rect->top = top;
|
|
rect->bottom = bottom;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetRectEmpty (USER.73)
|
|
*/
|
|
void WINAPI SetRectEmpty16( LPRECT16 rect )
|
|
{
|
|
rect->left = rect->right = rect->top = rect->bottom = 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetRectEmpty (USER32.@)
|
|
*/
|
|
BOOL WINAPI SetRectEmpty( LPRECT rect )
|
|
{
|
|
if (!rect) return FALSE;
|
|
rect->left = rect->right = rect->top = rect->bottom = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CopyRect (USER.74)
|
|
*/
|
|
BOOL16 WINAPI CopyRect16( RECT16 *dest, const RECT16 *src )
|
|
{
|
|
*dest = *src;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CopyRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI CopyRect( RECT *dest, const RECT *src )
|
|
{
|
|
if (!dest || !src)
|
|
return FALSE;
|
|
*dest = *src;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsRectEmpty (USER.75)
|
|
*
|
|
* Bug compat: Windows checks for 0 or negative width/height.
|
|
*/
|
|
BOOL16 WINAPI IsRectEmpty16( const RECT16 *rect )
|
|
{
|
|
return ((rect->left >= rect->right) || (rect->top >= rect->bottom));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsRectEmpty (USER32.@)
|
|
*
|
|
* Bug compat: Windows checks for 0 or negative width/height.
|
|
*/
|
|
BOOL WINAPI IsRectEmpty( const RECT *rect )
|
|
{
|
|
if (!rect) return TRUE;
|
|
return ((rect->left >= rect->right) || (rect->top >= rect->bottom));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PtInRect (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));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PtInRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI PtInRect( const RECT *rect, POINT pt )
|
|
{
|
|
if (!rect) return FALSE;
|
|
return ((pt.x >= rect->left) && (pt.x < rect->right) &&
|
|
(pt.y >= rect->top) && (pt.y < rect->bottom));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetRect (USER.77)
|
|
*/
|
|
void WINAPI OffsetRect16( LPRECT16 rect, INT16 x, INT16 y )
|
|
{
|
|
rect->left += x;
|
|
rect->right += x;
|
|
rect->top += y;
|
|
rect->bottom += y;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OffsetRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI OffsetRect( LPRECT rect, INT x, INT y )
|
|
{
|
|
if (!rect) return FALSE;
|
|
rect->left += x;
|
|
rect->right += x;
|
|
rect->top += y;
|
|
rect->bottom += y;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* InflateRect (USER.78)
|
|
*/
|
|
void WINAPI InflateRect16( LPRECT16 rect, INT16 x, INT16 y )
|
|
{
|
|
rect->left -= x;
|
|
rect->top -= y;
|
|
rect->right += x;
|
|
rect->bottom += y;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* InflateRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI InflateRect( LPRECT rect, INT x, INT y )
|
|
{
|
|
if (!rect) return FALSE;
|
|
rect->left -= x;
|
|
rect->top -= y;
|
|
rect->right += x;
|
|
rect->bottom += y;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectRect (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IntersectRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI IntersectRect( LPRECT dest, const RECT *src1,
|
|
const RECT *src2 )
|
|
{
|
|
if (!dest || !src1 || !src2) return FALSE;
|
|
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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UnionRect (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UnionRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI UnionRect( LPRECT dest, const RECT *src1,
|
|
const RECT *src2 )
|
|
{
|
|
if (!dest) return FALSE;
|
|
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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* EqualRect (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));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* EqualRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI EqualRect( const RECT* rect1, const RECT* rect2 )
|
|
{
|
|
if (!rect1 || !rect2) return FALSE;
|
|
return ((rect1->left == rect2->left) && (rect1->right == rect2->right) &&
|
|
(rect1->top == rect2->top) && (rect1->bottom == rect2->bottom));
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SubtractRect (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SubtractRect (USER32.@)
|
|
*/
|
|
BOOL WINAPI SubtractRect( LPRECT dest, const RECT *src1,
|
|
const RECT *src2 )
|
|
{
|
|
RECT tmp;
|
|
|
|
if (!dest) return FALSE;
|
|
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;
|
|
}
|