xform.eDx = 0;
xform.eDy = 0;
result = SetWorldTransform(hdc, &xform);
- ok(result == 1, "\n");
+ ok(result == 1, "SetWorldTransform should succeed\n");
- /* Something invalid */
+ /* 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, "\n");
+ 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");
+ ok(xform.eM12 * xform.eM21 != (FLOAT)1.0, "xform.eM12 * xform.eM21 shouldn't be 1.0\n");
+ 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.eM11 should be 3.0001\n");
+ ok(xform.eM21 == 4, "xform.eM11 should be 4\n");
+ ok(xform.eM22 == 6, "xform.eM11 should be 6\n");
+
+ /* Set smallest possible values */
+ xform.eM11 = (FLOAT)1.4e-45;
+ xform.eM12 = 0;
+ xform.eM21 = 0;
+ xform.eM22 = (FLOAT)1.4e-45;
+ 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");
+ ok(xform.eM11 * xform.eM22 != (FLOAT)0.0, "xform.eM12 * xform.eM21 shouldn't be 0.0\n");
+ result = SetWorldTransform(hdc, &xform);
+ ok(result == 1, "SetWorldTransform should succeed\n");
- //pEntry = GdiHandleTable + GDI_HANDLE_GET_INDEX(hdc);
- //pdcattr = pEntry->UserData;
+ /* 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.eM11 should be 0\n");
+ ok(xform.eM21 == 0, "xform.eM11 should be 0\n");
+ ok(xform.eM22 > 0, "xform.eM11 should not be 0\n");
DeleteDC(hdc);
}