/*
* DTRACE print callback to dump HDC clip region bounding rectangle
*/
void DumpClipRectangle(const char * file, int line, int argc, const char * fmt, va_list arglist) {
const char *msg = va_arg(arglist, const char *);
HDC hdc = va_arg(arglist, HDC);
RECT r;
DASSERT(argc == 2 && hdc != NULL);
DASSERT(msg != NULL);
::GetClipBox(hdc, &r);
DTrace_PrintImpl("%s: hdc=%x, %d %d %d %d\n", msg, hdc, r.left, r.top, r.right, r.bottom);
}
/*
* DTRACE print callback to dump window's update region bounding rectangle
*/
void DumpUpdateRectangle(const char * file, int line, int argc, const char * fmt, va_list arglist) {
const char *msg = va_arg(arglist, const char *);
HWND hwnd = va_arg(arglist, HWND);
RECT r;
DASSERT(argc == 2 && ::IsWindow(hwnd));
DASSERT(msg != NULL);
::GetUpdateRect(hwnd, &r, FALSE);
HRGN rgn = ::CreateRectRgn(0,0,1,1);
int updated = ::GetUpdateRgn(hwnd, rgn, FALSE);
DTrace_PrintImpl("%s: hwnd=%x, %d %d %d %d\n", msg, hwnd, r.left, r.top, r.right, r.bottom);
DumpRegion(rgn);
DeleteObject(rgn);
}
static void DumpRegion(HRGN rgn) {
DWORD size = ::GetRegionData(rgn, 0, NULL);
char* buffer = (char *)safe_Malloc(size);
memset(buffer, 0, size);
LPRGNDATA rgndata = (LPRGNDATA)buffer;
rgndata->rdh.dwSize = sizeof(RGNDATAHEADER);
rgndata->rdh.iType = RDH_RECTANGLES;
VERIFY(::GetRegionData(rgn, size, rgndata));
RECT* r = (RECT*)(buffer + rgndata->rdh.dwSize);
for (DWORD i=0; i<rgndata->rdh.nCount; i++) {
if ( !::IsRectEmpty(r) ) {
DTrace_PrintImpl("\trect %d %d %d %d\n", r->left, r->top, r->right, r->bottom);
}
r++;
}
free(buffer);
}
/*
* Called via DTRACE_PRINTLN macro. Outputs printf style formatted text with an automatic newline.
*/
void DTrace_VPrintln( const char * file, int line, int argc, const char * fmt, va_list arglist ) {
DTrace_VPrintImpl(fmt, arglist);
DTrace_PrintImpl("\n");
}
