/*
* Paint - When the mouse button is down, we want to paint on the
* drawing area.
*/
void Paint( HWND hwnd, WPI_POINT *start_pt, WPI_POINT *end_pt, int mousebutton )
{
WPI_POINT s_pt;
WPI_POINT e_pt;
WPI_PARAM2 lparam;
WPI_LINEDDAPROC fp;
s_pt.x = MAKELOGPTX(start_pt->x);
s_pt.y = MAKELOGPTY(start_pt->y);
e_pt.x = MAKELOGPTX(end_pt->x);
e_pt.y = MAKELOGPTY(end_pt->y);
CheckBounds( hwnd, &s_pt );
CheckBounds( hwnd, &e_pt );
s_pt.x = s_pt.x / pointSize.x;
s_pt.y = s_pt.y / pointSize.y;
e_pt.x = e_pt.x / pointSize.x;
e_pt.y = e_pt.y / pointSize.y;
currentMouseButton = mousebutton;
SET_HWND_PARAM2( lparam, hwnd );
fp = _wpi_makelineddaprocinstance( drawPt, Instance );
_wpi_linedda( s_pt.x, s_pt.y, e_pt.x, e_pt.y, (WPI_LINEDDAPROC)fp, lparam);
_wpi_freeprocinstance( fp );
DrawSinglePoint( hwnd, end_pt, mousebutton );
memcpy(start_pt, end_pt, sizeof(WPI_POINT));
} /* Paint */
/*
* OutlineLine - outline the line before it is drawn
*/
void OutlineLine( HWND hwnd, WPI_POINT *start_pt, WPI_POINT *end_pt,
WPI_POINT *prev_pt, BOOL firsttime )
{
WPI_POINT startpt;
WPI_POINT endpt;
WPI_POINT prevpt;
int prevROP2;
HPEN holdpen;
HPEN hwhitepen;
WPI_PRES pres;
CheckBounds( hwnd, start_pt );
CheckBounds( hwnd, end_pt );
startpt.x = MAKELOGPTX( start_pt->x ) + pointSize.x / 2;
startpt.y = MAKELOGPTY( start_pt->y ) + pointSize.y / 2;
endpt.x = MAKELOGPTX( end_pt->x ) + pointSize.x / 2;
endpt.y = MAKELOGPTY( end_pt->y ) + pointSize.y / 2;
pres = _wpi_getpres( hwnd );
_wpi_torgbmode( pres );
hwhitepen = _wpi_createpen( PS_SOLID, 0, WHITE );
holdpen = _wpi_selectobject( pres, hwhitepen );
prevROP2 = _wpi_setrop2( pres, R2_XORPEN );
if( !firsttime ) {
CheckBounds( hwnd, prev_pt );
prevpt.x = MAKELOGPTX( prev_pt->x ) + pointSize.x / 2;
prevpt.y = MAKELOGPTY( prev_pt->y ) + pointSize.y / 2;
_wpi_movetoex( pres, &startpt, NULL );
_wpi_lineto( pres, &prevpt );
}
_wpi_movetoex( pres, &startpt, NULL );
_wpi_lineto( pres, &endpt );
_wpi_setrop2( pres, prevROP2 );
_wpi_selectobject( pres, holdpen );
_wpi_deleteobject( hwhitepen );
_wpi_releasepres( hwnd, pres );
} /* OutlineLine */
/*
* OutlineRegion - displays the potential region (rectangle or ellipse)
* on the draw area.
*/
void OutlineRegion( HWND hwnd, WPI_POINT *start_pt, WPI_POINT *end_pt,
WPI_POINT *prev_pt, BOOL firsttime )
{
WPI_POINT topleft;
WPI_POINT bottomright;
WPI_POINT prevtl; // previous top left point
WPI_POINT prevbr; // previous bottom right point
int prevROP2;
HBRUSH hbrush;
HBRUSH holdbrush;
HPEN hwhitepen;
HPEN holdpen;
int temp;
WPI_PRES pres;
CheckBounds( hwnd, start_pt );
CheckBounds( hwnd, end_pt );
CheckBounds( hwnd, prev_pt );
_wpi_setpoint(&topleft, MAKELOGPTX(start_pt->x), MAKELOGPTY(start_pt->y));
_wpi_setpoint(&bottomright, MAKELOGPTX(end_pt->x), MAKELOGPTY(end_pt->y));
if (topleft.x > bottomright.x) {
temp = (short)bottomright.x;
bottomright.x = topleft.x + pointSize.x;
topleft.x = temp;
} else {
bottomright.x += pointSize.x;
}
if (topleft.y > bottomright.y) {
temp = (int)bottomright.y;
bottomright.y = topleft.y + pointSize.y;
topleft.y = temp;
} else {
bottomright.y += pointSize.y;
}
prevtl.x = MAKELOGPTX( start_pt->x );
prevtl.y = MAKELOGPTY( start_pt->y );
prevbr.x = MAKELOGPTX( prev_pt->x );
prevbr.y = MAKELOGPTY( prev_pt->y );
if (prevtl.x > prevbr.x) {
temp = (int)prevbr.x;
prevbr.x = prevtl.x + pointSize.x;
prevtl.x = temp;
} else {
prevbr.x += pointSize.x;
}
if (prevtl.y > prevbr.y) {
temp = (int)prevbr.y;
prevbr.y = prevtl.y + pointSize.y;
prevtl.y = temp;
} else {
prevbr.y += pointSize.y;
}
++prevtl.x;
++prevtl.y;
++topleft.x;
++topleft.y;
pres = _wpi_getpres( hwnd );
_wpi_torgbmode( pres );
prevROP2 = _wpi_setrop2( pres, R2_XORPEN );
hbrush = _wpi_createsolidbrush( BLACK );
hwhitepen = _wpi_createpen( PS_SOLID, 0, WHITE );
holdbrush = _wpi_selectobject( pres, hbrush );
holdpen = _wpi_selectobject( pres, hwhitepen );
if (!firsttime) {
if ((toolType == IMGED_CIRCLEO) || (toolType == IMGED_CIRCLEF)) {
_wpi_ellipse( pres, prevtl.x, prevtl.y, prevbr.x, prevbr.y );
} else {
_wpi_rectangle( pres, prevtl.x, prevtl.y, prevbr.x, prevbr.y );
}
}
if ((toolType == IMGED_CIRCLEO) || (toolType == IMGED_CIRCLEF)) {
_wpi_ellipse( pres, topleft.x, topleft.y, bottomright.x, bottomright.y );
} else {
_wpi_rectangle( pres, topleft.x, topleft.y, bottomright.x, bottomright.y );
}
_wpi_selectobject( pres, holdpen );
_wpi_selectobject( pres, holdbrush );
_wpi_deleteobject( hwhitepen );
_wpi_deleteobject( hbrush );
_wpi_setrop2( pres, prevROP2 );
_wpi_releasepres( hwnd, pres );
} /* OutlineRegion */
/*
* 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 */
