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VScreen.cpp

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// VScreen.cpp: implementation of the VScreen class.


#include "stdafx.h"
#include "VScreen.h"

// Construction

VScreen::VScreen(const int tlX, const int tlY, const int w, const int h)
{
    pointX = 0;
    pointY = 0;
    width = abs(w); // ensure positive width
    height = h;
    moveScreen(tlX, tlY);
}

// Member Functions

void VScreen::moveScreen(const int tlX, const int tlY)
{
    screenRgn = CreateRectRgn(
        tlX, tlY, 
        this->width + tlX, 
        abs(height) + tlY);

    GetRgnBox(screenRgn, &screenRect);
}

bool VScreen::PointOnScreen(const int x, const int y)
{
    if ( PtInRegion(screenRgn, x, y) ){
        pointX = x - screenRect.left;

        if( height < 0 )
            pointY = -y + screenRect.top - (height + 1);
        else
            pointY = y - screenRect.top;

        return true;
    } else {
        return false;
    }
}

RECT VScreen::getRgnRect() const
{
    return screenRect;
}

HRGN VScreen::getRgn() const
{
    return screenRgn;
}

void VScreen::invalidate(HWND hWnd, bool Erase)
{
    InvalidateRgn(hWnd, screenRgn, Erase);
}

int VScreen::getScreenX() const
{
    return pointX;
}

int VScreen::getScreenY() const
{
    return pointY;
}

int VScreen::getHeight() const
{
    return height;
}

int VScreen::getWidth() const
{
    return width;
}

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