reactos/rosapps/dflat32/rect.c
Eric Kohl a12836346f Improved keyboard handling code
Fixed problems with differnet console sizes
Started function renaming

svn path=/trunk/; revision=1034
2000-03-08 01:49:37 +00:00

107 lines
2.8 KiB
C

/* ------------- rect.c --------------- */
#include "dflat.h"
/* --- Produce the vector end points produced by the overlap
of two other vectors --- */
static void subVector(int *v1, int *v2,
int t1, int t2, int o1, int o2)
{
*v1 = *v2 = -1;
if (within(o1, t1, t2)) {
*v1 = o1;
if (within(o2, t1, t2))
*v2 = o2;
else
*v2 = t2;
}
else if (within(o2, t1, t2)) {
*v2 = o2;
if (within(o1, t1, t2))
*v1 = o1;
else
*v1 = t1;
}
else if (within(t1, o1, o2)) {
*v1 = t1;
if (within(t2, o1, o2))
*v2 = t2;
else
*v2 = o2;
}
else if (within(t2, o1, o2)) {
*v2 = t2;
if (within(t1, o1, o2))
*v1 = t1;
else
*v1 = o1;
}
}
/* --- Return the rectangle produced by the overlap
of two other rectangles ---- */
DFRECT subRectangle(DFRECT r1, DFRECT r2)
{
DFRECT r = {0,0,0,0};
subVector((int *) &RectLeft(r), (int *) &RectRight(r),
RectLeft(r1), RectRight(r1),
RectLeft(r2), RectRight(r2));
subVector((int *) &RectTop(r), (int *) &RectBottom(r),
RectTop(r1), RectBottom(r1),
RectTop(r2), RectBottom(r2));
if (RectRight(r) == -1 || RectTop(r) == -1)
RectRight(r) =
RectLeft(r) =
RectTop(r) =
RectBottom(r) = 0;
return r;
}
/* ------- return the client rectangle of a window ------ */
DFRECT ClientRect(void *wnd)
{
DFRECT rc;
if (wnd == NULL)
{
RectLeft(rc) = 1; // GetClientLeft((DFWINDOW)wnd);
RectTop(rc) = 2; // GetClientTop((DFWINDOW)wnd);
RectRight(rc) = DfGetScreenWidth () - 2; // GetClientRight((DFWINDOW)wnd);
RectBottom(rc) = DfGetScreenHeight () - 2; // GetClientBottom((DFWINDOW)wnd);
return rc;
}
RectLeft(rc) = GetClientLeft((DFWINDOW)wnd);
RectTop(rc) = GetClientTop((DFWINDOW)wnd);
RectRight(rc) = GetClientRight((DFWINDOW)wnd);
RectBottom(rc) = GetClientBottom((DFWINDOW)wnd);
return rc;
}
/* ----- return the rectangle relative to
its window's screen position -------- */
DFRECT RelativeWindowRect(void *wnd, DFRECT rc)
{
RectLeft(rc) -= GetLeft((DFWINDOW)wnd);
RectRight(rc) -= GetLeft((DFWINDOW)wnd);
RectTop(rc) -= GetTop((DFWINDOW)wnd);
RectBottom(rc) -= GetTop((DFWINDOW)wnd);
return rc;
}
/* ----- clip a rectangle to the parents of the window ----- */
DFRECT ClipRectangle(void *wnd, DFRECT rc)
{
DFRECT sr;
RectLeft(sr) = RectTop(sr) = 0;
RectRight(sr) = DfGetScreenWidth()-1;
RectBottom(sr) = DfGetScreenHeight()-1;
if (!TestAttribute((DFWINDOW)wnd, NOCLIP))
while ((wnd = GetParent((DFWINDOW)wnd)) != NULL)
rc = subRectangle(rc, ClientRect(wnd));
return subRectangle(rc, sr);
}
/* EOF */