reactos/modules/rostests/apitests/gdi32/SetWorldTransform.c

129 lines
4.1 KiB
C

/*
* PROJECT: ReactOS api tests
* LICENSE: GPL - See COPYING in the top level directory
* PURPOSE: Test for SetWorldTransform
* PROGRAMMERS: Timo Kreuzer
* Katayama Hirofumi MZ
*/
#include "precomp.h"
void Test_SetWorldTransform()
{
HDC hdcScreen, hdc;
XFORM xform;
BOOL result;
//PGDI_TABLE_ENTRY pEntry;
//DC_ATTR* pdcattr;
/* Create a DC */
hdcScreen = GetDC(NULL);
hdc = CreateCompatibleDC(hdcScreen);
ReleaseDC(NULL, hdcScreen);
SetGraphicsMode(hdc, GM_ADVANCED);
/* Set identity transform */
xform.eM11 = 1;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = 1;
xform.eDx = 0;
xform.eDy = 0;
result = SetWorldTransform(hdc, &xform);
ok(result == 1, "SetWorldTransform should succeed\n");
/* Set eM11 to 0 */
xform.eM11 = 0;
result = SetWorldTransform(hdc, &xform);
ok(result == 0, "SetWorldTransform should fail\n");
/* Set eM22 to 0 */
xform.eM11 = 1;
xform.eM22 = 0;
result = SetWorldTransform(hdc, &xform);
ok(result == 0, "SetWorldTransform should fail\n");
/* Set values that result in the determinant being 0 */
xform.eM11 = 2;
xform.eM12 = 3;
xform.eM21 = 4;
xform.eM22 = 6;
result = SetWorldTransform(hdc, &xform);
ok(result == 0, "SetWorldTransform should fail\n");
/* Small modification to make the determinant != 0 */
xform.eM12 = (FLOAT)3.0001;
result = SetWorldTransform(hdc, &xform);
ok(result == 1, "SetWorldTransform should succeed\n");
/* Set values that result in the determinant being 0 due to rounding */
xform.eM11 = 1;
xform.eM12 = (FLOAT)0.9999999;
xform.eM21 = (FLOAT)1.0000001;
xform.eM22 = 1;
ok(xform.eM12 != (FLOAT)1.0, "xform.eM12 shouldn't be 1.0\n");
ok(xform.eM21 != (FLOAT)1.0, "xform.eM21 shouldn't be 1.0\n");
#if 0 // FIXME: x86 uses 80 bits internally, so the result doesn't reflect the actual FLOAT result
ok(xform.eM12 * xform.eM21 != (FLOAT)1.0, "xform.eM12 * xform.eM21 shouldn't be 1.0\n");
#endif
result = SetWorldTransform(hdc, &xform);
ok(result == 0, "SetWorldTransform should fail\n");
/* Test world transform (should be unchanged by previous failure) */
result = GetWorldTransform(hdc, &xform);
ok(result == 1, "GetWorldTransform should succeed\n");
ok(xform.eM11 == 2, "xform.eM11 should be 2\n");
ok(xform.eM12 == (FLOAT)3.0001, "xform.eM12 should be 3.0001\n");
ok(xform.eM21 == 4, "xform.eM21 should be 4\n");
ok(xform.eM22 == 6, "xform.eM22 should be 6\n");
/* Set smallest possible values */
xform.eM11 = 1.17549435e-38f;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = 1.17549435e-38f;
ok(xform.eM11 != (FLOAT)0.0, "xform.eM11 shouldn't be 0.0\n");
ok(xform.eM22 != (FLOAT)0.0, "xform.eM22 shouldn't be 0.0\n");
#if 0 // FIXME: x86 uses 80 bits internally, so the result doesn't reflect the actual FLOAT result
ok(xform.eM11 * xform.eM22 != (FLOAT)0.0, "xform.eM12 * xform.eM21 shouldn't be 0.0\n");
#endif
result = SetWorldTransform(hdc, &xform);
ok(result == 1, "SetWorldTransform should succeed\n");
/* Test world transform */
result = GetWorldTransform(hdc, &xform);
ok(result == 1, "GetWorldTransform should succeed\n");
ok(xform.eM11 > 0, "xform.eM11 should not be 0\n");
ok(xform.eM12 == 0, "xform.eM12 should be 0\n");
ok(xform.eM21 == 0, "xform.eM21 should be 0\n");
ok(xform.eM22 > 0, "xform.eM22 should not be 0\n");
xform.eM11 = 0;
xform.eM12 = 1;
xform.eM21 = 1;
xform.eM22 = 0;
result = SetWorldTransform(hdc, &xform);
ok_int(result, 1);
xform.eM11 = 1;
xform.eM12 = 1;
xform.eM21 = 1;
xform.eM22 = 1;
result = SetWorldTransform(hdc, &xform);
ok_int(result, 0);
result = GetWorldTransform(hdc, &xform);
ok_int(result, 1);
ok(xform.eM11 == 0, "xform.eM11 should be 0\n");
ok(xform.eM12 == 1, "xform.eM12 should be 1\n");
ok(xform.eM21 == 1, "xform.eM21 should be 1\n");
ok(xform.eM22 == 0, "xform.eM22 should be 0\n");
DeleteDC(hdc);
}
START_TEST(SetWorldTransform)
{
Test_SetWorldTransform();
}