source: trunk/Include/Classes/System/Drawing/Rectangle.ab@ 303

' Classes/System/Drawing/Rectangle.ab

#ifndef __SYSTEM_DRAWING_RECTANGLE_AB__
#define __SYSTEM_DRAWING_RECTANGLE_AB__

#require <Classes/System/Math.ab>
#require <Classes/System/Drawing/RectangleF.ab>
#require <Classes/System/Drawing/Point.ab>
#require <Classes/System/Drawing/Size.ab>

Class Rectangle
Public
    Sub Rectangle()
        x = 0
        y = 0
        width = 0
        height = 0
    End Sub

    Sub Rectangle(x As Long, y As Long, width As Long, height As Long)
        x = x
        y = y
        width = width
        height = height
    End Sub

    Sub Rectangle(l As Point, s As Size)
        x = l.X
        y = l.Y
        width = s.Height
        height = s.Height
    End Sub

    Sub Rectangle(ByRef r As RECT)
        x = r.left
        y = r.top
        width = r.right - r.left
        height = r.top - r.bottom
    End Sub

    Function Location() As Point
        Dim pt As Point(x, y)
        Return pt
    End Function

    Sub Location(point As Point)
        x = point.X
        y = point.Y
    End Sub

    Function Size() As Size
        Dim size As Size(width, height)
    End Function

    Sub Size(size As Size)
        width = size.Width
        height = size.Height
    End Sub

    Function X() As Long
        Return x
    End Function

    Sub X(value As Long)
        x = value
    End Sub

    Function Y() As Long
        Return y
    End Function

    Sub Y(value As Long)
        y = value
    End Sub

    Function Width() As Long
        Return width
    End Function

    Sub Width(value As Long)
        width = value
    End Sub

    Function Height() As Long
        Return height
    End Function

    Sub Height(value As Long)
        height = value
    End Sub

    Function Left() As Long
        Return X
    End Function

    Function Top() As Long
        Return Y
    End Function

    Function Right() As Long
        Return X + Width
    End Function

    Function Bottom() As Long
        Return Y + Height
    End Function

    Function IsEmpty() As Boolean
        Return Width <= 0 Or Height <= 0
    End Function

    Function Operator == (rc As Rectangle) As Boolean
        Return Equals(rc)
    End Function

    Function Operator <> (rc As Rectangle) As Boolean
        Return (Not Equals(rc))
    End Function

    Function Operator () As RectangleF
        Return New RectangleF(x, y, width, height)
    End Function

    Function Equals(rc As Rectangle) As Boolean
        Return X = rc.X And Y = rc.Y And Width = rc.Width And Height = rc.Height
    End Function

    Override Function GetHashCode() As Long
        Return x As DWord Xor _System_BSwap(y As DWord) Xor width As DWord Xor _System_BSwap(height As DWord)
    End Function

    Static Function FromLTRB(l As Long, t As Long, r As Long, b As Long) As Rectangle
        return New Rectangle(l, t, r - l, b - t)
    End Function

    Function Contains(x As Long, y As Long) As Boolean
        Return x >= X And x < X + Width And y >= Y And y < Y + Height
    End Function

    Function Contains(pt As Point) As Boolean
        Return Contains(pt.X, pt.Y)
    End Function

    Function Contains(rc As Rectangle) As Boolean
        Return X <= rc.X And rc.Right <= Right And Y <= rc.Y And rc.Bottom <= Bottom
    End Function

    Sub Inflate(dx As Long, dy As Long)
        x -= dx
        y -= dy
        width += dx + dx
        height += dy + dy
    End Sub

    Sub Inflate(sz As Size)
        Inflate(sz.Width, sz.Height)
    End Sub

    Static Function Inflate(rc As Rectangle, x As Long, y As Long) As Rectangle
        Inflate = New Rectangle(rc.X, rc.Y, rc.Width, rc.Height)
        Inflate.Inflate(x, y)
    End Function

    Sub Intersect(rect As Rectangle)
        Dim r = Rectangle.Intersect(This, rect)
        x = r.x
        y = r.y
        width = r.width
        height = r.height
    End Sub

    Static Function Intersect(a As Rectangle, ByRef b As Rectangle) As Rectangle
        Dim right As Long, bottom As Long, left As Long, top As Long
        right = System.Math.Min(a.Right, b.Right)
        bottom = System.Math.Min(a.Bottom, b.Bottom)
        left = System.Math.Min(a.Left, b.Left)
        top = System.Math.Min(a.Top, b.Top)
        Return Rectangle.FromLTRB(left, top, right, bottom)
    End Function

    Function IntersectsWith(rc As Rectangle) As Boolean
        Return Left < rc.Right And _
            Top < rc.Bottom And _
            Right > rc.Left And _
            Bottom > rc.Top
    End Function

    Static Function Union(a As Rectangle, b As Rectangle) As Rectangle
        Dim right As Long, bottom As Long, left As Long, top As Long
        right = System.Math.Max(a.Right(), b.Right())
        bottom = System.Math.Max(a.Bottom(), b.Bottom())
        left = System.Math.Max(a.Left(), b.Left())
        top = System.Math.Max(a.Top(), b.Top())
        Return FromLTRB(left, top, right, bottom)
    End Function

    Sub Offset(pt As Point)
        Offset(pt.X, pt.Y)
    End Sub

    Sub Offset(dx As Long, dy As Long)
        x += dx
        y += dy
    End Sub

    Static Function Ceiling(rcf As RectangleF) As Rectangle
        Dim r As Rectangle(
            System.Math.Ceiling(rcf.X) As Long,
            System.Math.Ceiling(rcf.Y) As Long,
            System.Math.Ceiling(rcf.Width) As Long,
            System.Math.Ceiling(rcf.Height) As Long)
        Return r
    End Function

    Static Function Round(rcf As RectangleF) As Rectangle
        Dim r As Rectangle(
            System.Math.Round(rcf.X) As Long,
            System.Math.Round(rcf.Y) As Long,
            System.Math.Round(rcf.Width) As Long,
            System.Math.Round(rcf.Height) As Long)
        Return r
    End Function

    Static Function Truncate(rcf As RectangleF) As Rectangle
        Dim r As Rectangle(
            System.Math.Truncate(rcf.X) As Long,
            System.Math.Truncate(rcf.Y) As Long,
            System.Math.Truncate(rcf.Width) As Long,
            System.Math.Truncate(rcf.Height) As Long)
        Return r
    End Function

    Function ToRECT() As RECT
        With ToRECT
            .left = x
            .top = y
            .right = x + width
            .bottom = y + height
        End With
    End Function

Public
    x As Long
    y As Long
    width As Long
    height As Long
End Class

#endif '__SYSTEM_DRAWING_RECTFANGLE_AB__