mirror of
https://github.com/reactos/reactos.git
synced 2024-08-30 23:28:58 +00:00
![Steven Edwards](/assets/img/avatar_default.png)
next few weeks. I'm going through the DFLAT api doc and fixing the export names and then going to try to build a simple hello dflat application. svn path=/trunk/; revision=2844
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/* ------------- rect.c --------------- */
|
|
|
|
#include "dflat32/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 */
|