/*
* OutlineClip - displays the potential region to be clipped to the clip board
*/
void OutlineClip( HWND hwnd, WPI_POINT *start_pt, WPI_POINT *end_pt,
WPI_POINT *prev_pt, BOOL firsttime )
{
WPI_RECT newpos;
WPI_RECT oldpos;
short temp;
WPI_PRES pres;
IMGED_DIM left;
IMGED_DIM top;
IMGED_DIM right;
IMGED_DIM bottom;
CheckBounds( hwnd, start_pt );
CheckBounds( hwnd, end_pt );
CheckBounds( hwnd, prev_pt );
left = (IMGED_DIM)MAKELOGPTX(start_pt->x);
top = (IMGED_DIM)MAKELOGPTY(start_pt->y);
right = (IMGED_DIM)MAKELOGPTX(end_pt->x);
bottom = (IMGED_DIM)MAKELOGPTY(end_pt->y);
if (left > right) {
temp = right;
right = left + pointSize.x;
left = temp;
} else {
right += pointSize.x;
}
if (top > bottom) {
temp = bottom;
bottom = top + pointSize.y;
top = temp;
} else {
bottom += pointSize.y;
}
_wpi_setrectvalues( &newpos, left, top, right, bottom );
left = (IMGED_DIM)MAKELOGPTX( start_pt->x );
top = (IMGED_DIM)MAKELOGPTY( start_pt->y );
right = (IMGED_DIM)MAKELOGPTX( prev_pt->x );
bottom = (IMGED_DIM)MAKELOGPTY( prev_pt->y );
if (left > right) {
temp = right;
right = left + pointSize.x;
left = temp;
} else {
right += pointSize.x;
}
if (top > bottom) {
temp = bottom;
bottom = top + pointSize.y;
top = temp;
} else {
bottom += pointSize.y;
}
_wpi_setrectvalues( &oldpos, left, top, right, bottom );
pres = _wpi_getpres( hwnd );
OutlineRectangle( firsttime, pres, &oldpos, &newpos );
_wpi_releasepres( hwnd, pres );
} /* OutlineClip */
/*
* BitmapPickProc - handle messages for choosing the region to begin the
* editing session.
*/
LONG CALLBACK BitmapPickProc( HWND hwnd, UINT msg, UINT wparam, LONG lparam )
{
static POINT topleft;
static POINT bottomright;
static RECT prevpos;
static BOOL firsttime = TRUE;
static BOOL buttondown;
static HCURSOR prevcursor;
static HCURSOR crosshairs;
HDC hdc;
switch ( msg ) {
case WM_CREATE:
crosshairs = LoadCursor( Instance, CROSSHAIRSCUR );
prevcursor = SetCursor( crosshairs );
SetCapture( hwnd );
firsttime = TRUE;
SetRect( &prevpos, 0, 0, 0, 0 );
break;
case WM_LBUTTONDOWN:
GetCursorPos( &topleft );
buttondown = TRUE;
break;
case WM_LBUTTONUP:
GetCursorPos( &bottomright );
SetRect( &bmpRegion, topleft.x, topleft.y, bottomright.x, bottomright.y );
checkRectBounds( &bmpRegion );
hdc = GetDC( NULL );
OutlineRectangle( TRUE, hdc, &prevpos, &bmpRegion );
ReleaseDC( NULL, hdc );
buttondown = FALSE;
ReleaseCapture();
SendMessage( hwnd, WM_CLOSE, 0, 0L );
break;
case WM_MOUSEMOVE:
if (buttondown) {
GetCursorPos( &bottomright );
SetRect( &bmpRegion, topleft.x, topleft.y, bottomright.x, bottomright.y );
checkRectBounds( &bmpRegion );
hdc = GetDC( NULL );
OutlineRectangle( firsttime, hdc, &prevpos, &bmpRegion );
ReleaseDC( NULL, hdc );
firsttime = FALSE;
prevpos = bmpRegion;
}
break;
case WM_DESTROY:
notDestroyed = FALSE;
SetCursor( prevcursor );
DestroyCursor( crosshairs );
break;
default:
return( DefWindowProc( hwnd, msg, wparam, lparam ) );
}
return( 0 );
} /* BitmapPickProc */
