modules/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 "precomp.h"
   9
  10 void Test_ExcludeClipRect()
  11 {
  12     HDC hdc;
  13     HRGN hrgn, hrgn2;
  14
  15     hdc = CreateCompatibleDC(NULL);
  16     ok(hdc != 0, "CreateCompatibleDC failed, skipping tests.\n");
  17     if (!hdc) return;
  18
  19     hrgn2 = CreateRectRgn(0, 0, 0, 0);
  20
  21     /* Test NULL DC */
  22     SetLastError(0x12345);
  23     ok_int(ExcludeClipRect(NULL, 0, 0, 0, 0), ERROR);
  24     ok_int(GetLastError(), ERROR_INVALID_HANDLE);
  25
  26     /* Test invalid DC */
  27     SetLastError(0x12345);
  28     ok_int(ExcludeClipRect((HDC)(ULONG_PTR)0x12345, 0, 0, 0, 0), ERROR);
  29     ok_int(GetLastError(), ERROR_INVALID_HANDLE);
  30     SetLastError(0x12345);
  31
  32     /* Set a clip region */
  33     hrgn = CreateRectRgn(10, 10, 20, 30);
  34     ok_int(SelectClipRgn(hdc, hrgn), NULLREGION); // yeah... it's NULLREGION
  35     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  36     ok_int(EqualRgn(hrgn, hrgn2), TRUE); // but in fact it's the region we set
  37
  38     /* Exclude something outside of the clip region */
  39     ok_int(ExcludeClipRect(hdc, 0, 0, 1, 1), COMPLEXREGION); // in reality it's a rect region
  40     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  41     ok_int(EqualRgn(hrgn, hrgn2), TRUE);
  42
  43     /* Exclude something on one side of the clip rect */
  44     ok_int(ExcludeClipRect(hdc, 0, 0, 13, 50), COMPLEXREGION);
  45     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  46     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), SIMPLEREGION);
  47
  48     /* Exclude something on the edge of the clip rect */
  49     ok_int(ExcludeClipRect(hdc, 0, 0, 15, 15), COMPLEXREGION);
  50     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  51     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), COMPLEXREGION);
  52
  53     /* Exclude everything left */
  54     ok_int(ExcludeClipRect(hdc, 0, 0, 100, 100), NULLREGION);
  55     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  56     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), NULLREGION);
  57
  58     /* Reset the clip region */
  59     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION); // makes sense, it's actually the whole region
  60     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 0); // return value says region is NULL
  61     ok_int(ExcludeClipRect(hdc, 0, 0, 1, 1), NULLREGION);
  62     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1); // but now we have a region
  63     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), NULLREGION); // but it's a NULLREGION (aka empty)?
  64
  65     /* Test negative rect */
  66     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION);
  67     ok_int(ExcludeClipRect(hdc, -10, -10, 0, 0), COMPLEXREGION); // this time it's a complex region?
  68     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  69     hrgn = CreateRectRgn(0, 0, 1, 1);
  70     ok_int(CombineRgn(hrgn2, hrgn2, hrgn, RGN_XOR), NULLREGION);
  71
  72     /* Test rect with high coordinates */
  73     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION);
  74     ok_int(ExcludeClipRect(hdc, 100000, 100000, 100010, 100010), COMPLEXREGION); // this time it's a complex region?
  75     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  76     hrgn = CreateRectRgn(0, 0, 1, 1);
  77     ok_int(EqualRgn(hrgn, hrgn2), TRUE);
  78     DeleteObject(hrgn);
  79
  80     /* Test reversed rect negative, but still above 0 */
  81     ok_int(SelectClipRgn(hdc, NULL), SIMPLEREGION);
  82     ok_int(ExcludeClipRect(hdc, 1, 1, -10, -20), NULLREGION);
  83     ok_int(GetRandomRgn(hdc, hrgn2, CLIPRGN), 1);
  84     hrgn = CreateRectRgn(0, 0, 0, 0);
  85     ok_int(CombineRgn(hrgn, hrgn2, NULL, RGN_COPY), NULLREGION);
  86
  87     ok_int(GetLastError(), 0x12345);
  88
  89 }
  90
  91
  92 START_TEST(ExcludeClipRect)
  93 {
  94     Test_ExcludeClipRect();
  95 }