* Dialog Utilities

// Assumes inclusion of

/* Return topLeft point to center standard file dialogs. */

Point DU_StdPutWhere(void);

Point DU_StdGetWhere(void);

* Pre-load and center ALRT/DLOG template resources. Changes do not affect

* the resource file, but if the ALRT/DLOG is created soon after the call

* it will use the modified (centered) template in memory. Both routines

* return the passed rsrc id to allow calls like:

* Alert(DU_CenterALRT( alertID),filter);

* GetNewDialog(DU_CenterDLOG(dlogID),dStorage,behindWindow);

short DU_CenterALRT( short rsrcId);

short DU_CenterDLOG( short rsrcId);

static Rect DU_MouseGDRect(void) {

/* Returns the gdRect of the screen device the mouse is currently in. */

Point p;

Rect r = screenBits.bounds;

GDHandle curDevice = GetDeviceList();

GetMouse(&p);

while(curDevice){

if (TestDeviceAttribute(curDevice,screenDevice) &&

TestDeviceAttribute(curDevice,screenActive) &&

PtInRect(p,&(*curDevice)->gdRect))

r = (*curDevice)->gdRect;

curDevice = GetNextDevice(curDevice);

}

return r;

}

static void DU_CenterRect(Rect* rect_p){

* Aligns *rect_p with screenBits.bounds - LR centered & with 1/3 of the

* empty space above the rect.

Rect bRect = DU_MouseGDRect();

bRect.top += GetMBarHeight();

/* exactly centered */

OffsetRect(rect_p, (bRect.right + bRect.left)/2 - (rect_p->right +

rect_p->left)/2, (bRect.top + bRect.bottom)/2 -

(rect_p->top + rect_p->bottom)/2);

/* 1/2 empty space above -> 1/3 empty space above */

OffsetRect(rect_p,0,-(rect_p->top - bRect.top)/3);

}

static Point DU_Where( short rsrcId){

* Returns centering point for the topLeft corner of a dialog.

Handle h = GetResource('DLOG',rsrcId);

Rect r = {0,0,0,0};

if(h){

r = *((Rect*)(*h));

DU_CenterRect(&r);

ReleaseResource(h);

}

return topLeft(r);

}

Point DU_StdPutWhere(void){

return DU_Where(putDlgID);

}

Point DU_StdGetWhere(void){

return DU_Where(getDlgID);

}

static short DU_Center(ResType type, short rsrcId){

* Reads in an 'ALRT' or 'DLOG' rsrc template & centers its display Rect.

Handle h = GetResource(type,rsrcId);

if(h)

DU_CenterRect((Rect*)(*h));

return rsrcId;

}

short DU_CenterALRT( short rsrcId){

return DU_Center('ALRT',rsrcId);

}

short DU_CenterDLOG( short rsrcId){

return DU_Center('DLOG',rsrcId);

}