rostests/apitests/gdi32/ExcludeClipRect.c

   1 /*
   2  * PROJECT:         ReactOS api tests
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * PURPOSE:         Test for ExcludeClipRect
   5  * PROGRAMMERS:     Timo Kreuzer
   6  */
   7
   8 #include <apitest.h>
   9
  10 #include <wingdi.h>
  11 #include <winuser.h>
  12
  13 #define CLIPRGN 1
  14
  15 #define ok_rect(_prc, _left, _top, _right, _bottom) \
  16     ok_int((_prc)->left, _left); \
  17     ok_int((_prc)->top, _top); \
  18     ok_int((_prc)->right, _right); \
  19     ok_int((_prc)->bottom, _bottom); \
  20
  21 void Test_ExcludeClipRect()
  22 {
  23     HDC hdc;
  24     HRGN hrgn, hrgn2;
  25
  26     hdc = CreateCompatibleDC(NULL);
  27     ok(hdc != 0, "CreateCompatibleDC failed, skipping tests.\n");
  28     if (!hdc) return;
  29
  30     hrgn2 = CreateRectRgn(0, 0, 0, 0);
  31
  32     /* Test NULL DC */
  33     SetLastError(0x12345);
  34     ok_int(ExcludeClipRect(NULL, 0, 0, 0, 0), ERROR);
  35     ok_int(GetLastError(), ERROR_INVALID_HANDLE);
  36
  37     /* Test invalid DC */
  38     SetLastError(0x12345);
  39     ok_int(ExcludeClipRect((HDC)(ULONG_PTR)0x12345, 0, 0, 0, 0), ERROR);
  40     ok_int(GetLastError(), ERROR_INVALID_HANDLE);
  41     SetLastError(0x12345);
  42
  43     /* Set a clip region */
  44     hrgn = CreateRectRgn(10, 10, 20, 30);
  45     ok_int(SelectClipRgn(hdc, hrgn), NULLREGION); // yeah... it's NULLREGION
  46     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  47     ok_int(EqualRgn(hrgn, hrgn2), TRUE); // but in fact it's the region we set
  48
  49     /* Exclude something outside of the clip region */
  50     ok_int(ExcludeClipRect(hdc, 0, 0, 1, 1), COMPLEXREGION); // in reality it's a rect region
  51     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  52     ok_int(EqualRgn(hrgn, hrgn2), TRUE);
  53
  54     /* Exclude something on one side of the clip rect */
  55     ok_int(ExcludeClipRect(hdc, 0, 0, 13, 50), COMPLEXREGION);
  56     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  57     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), SIMPLEREGION);
  58
  59     /* Exclude something on the edge of the clip rect */
  60     ok_int(ExcludeClipRect(hdc, 0, 0, 15, 15), COMPLEXREGION);
  61     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  62     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), COMPLEXREGION);
  63
  64     /* Exclude everything left */
  65     ok_int(ExcludeClipRect(hdc, 0, 0, 100, 100), NULLREGION);
  66     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  67     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), NULLREGION);
  68
  69     /* Reset the clip region */
  70     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION); // makes sense, it's actually the whole region
  71     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 0); // return value says region is NULL
  72     ok_int(ExcludeClipRect(hdc, 0, 0, 1, 1), NULLREGION);
  73     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1); // but now we have a region
  74     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), NULLREGION); // but it's a NULLREGION (aka empty)?
  75
  76     /* Test negative rect */
  77     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION);
  78     ok_int(ExcludeClipRect(hdc, -10, -10, 0, 0), COMPLEXREGION); // this time it's a complex region?
  79     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  80     hrgn = CreateRectRgn(0, 0, 1, 1);
  81     ok_int(CombineRgn(hrgn2, hrgn2, hrgn, RGN_XOR), NULLREGION);
  82
  83     /* Test rect with high coordinates */
  84     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION);
  85     ok_int(ExcludeClipRect(hdc, 100000, 100000, 100010, 100010), COMPLEXREGION); // this time it's a complex region?
  86     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  87     hrgn = CreateRectRgn(0, 0, 1, 1);
  88     ok_int(EqualRgn(hrgn, hrgn2), TRUE);
  89     DeleteObject(hrgn);
  90
  91     /* Test reversed rect negative, but still above 0 */
  92     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION);
  93     ok_int(ExcludeClipRect(hdc, 1, 1, -10, -20), NULLREGION);
  94     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  95     hrgn = CreateRectRgn(0, 0, 0, 0);
  96     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), NULLREGION);
  97
  98     ok_int(GetLastError(), 0x12345);
  99
 100 }
 101
 102
 103 START_TEST(ExcludeClipRect)
 104 {
 105     Test_ExcludeClipRect();
 106 }