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cmGrDevCtx.h/c Added cmGrDcPoint/RectIsVisible()

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This commit is contained in:
kevin 2013-01-13 16:40:49 -08:00
parent ab0589a216
commit 390cedeac6
2 changed files with 46 additions and 1 deletions
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41
cmGrDevCtx.c
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@ -497,8 +497,33 @@ void cmGrDcDrawTextJustifyPt( cmGrDcH_t h, unsigned fontId, unsigned size, un
else
y = yy + sz.h/2;
cmGrDcDrawText(h, text, x+.5, y+.5 );
cmGrPExt_t r;
cmGrPExtSet(&r,x,y,sz.w,sz.h);
// Note: Checking for visibility should not be necessary however
// there appears to be a problem with the FLTK text output whereby
// text coordinates over 0xffff wrap around and may appear in the
// visible region.
if( cmGrDcRectIsVisible(h,&r) )
{
/*
if( text!=NULL && (strncmp(text,"loc:138",7)==0 || strcmp(text,"loc:8 ")==0))
{
printf("%s %i %i %i %i\n",text,x,y,sz.w,xx);
cmGrPExtPrint(text,&r);
cmGrDc_t* p = _cmGrDcHandleToPtr(h);
cmGrPExt_t res;
cmGrPExtIntersect(&res,&p->pext,&r );
cmGrPExtPrint(text,&p->pext);
cmGrPExtPrint("isect:",&res);
printf("%i\n",cmGrPExtIsNotNullOrEmpty(&res));
}
*/
cmGrDcDrawText(h, text, x+.5, y+.5 );
}
//cmGrPExt_t pext;
//cmGrDcDrawTextJustifyRect(h, fontId, size, style, text, flags, xx, yy, &pext );
//cmGrDcDrawRectPExt(h,&pext);
@ -528,3 +553,17 @@ void cmGrDcDrawTextJustifyRect( cmGrDcH_t h, unsigned fontId, unsigned size, u
cmGrPExtSet( pext, x, y-sz.h, sz.w+1, sz.h );
}
bool cmGrDcPointIsVisible( cmGrDcH_t h, int x, int y )
{
cmGrDc_t* p = _cmGrDcHandleToPtr(h);
return cmGrVExtIsXyInside(&p->pext,x,y);
}
bool cmGrDcRectIsVisible( cmGrDcH_t h, const cmGrPExt_t* r )
{
cmGrPExt_t res;
cmGrDc_t* p = _cmGrDcHandleToPtr(h);
cmGrPExtIntersect(&res,&p->pext,r );
return cmGrPExtIsNotNullOrEmpty(&res);
}

6
cmGrDevCtx.h
View File

@ -189,6 +189,12 @@ extern "C" {
// Return the rectangle around the text but do not display the text.
void cmGrDcDrawTextJustifyRect( cmGrDcH_t h, unsigned fontId, unsigned size, unsigned style, const cmChar_t* text, unsigned flags, int x, int y, cmGrPExt_t* pext );
// Is the point x,y visible in this drawing context.
bool cmGrDcPointIsVisible( cmGrDcH_t h, int x, int y );
// Is any of the rectangle visible in this drawing context.
bool cmGrDcRectIsVisible( cmGrDcH_t h, const cmGrPExt_t* r );
#ifdef __cplusplus
}
#endif