dlls/gdi32/tests/clipping.c

   1 /*
   2  * Unit test suite for clipping
   3  *
   4  * Copyright 2005 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "wine/test.h"
  22 #include "winbase.h"
  23 #include "wingdi.h"
  24 #include "winuser.h"
  25
  26 static void test_GetRandomRgn(void)
  27 {
  28     HWND hwnd = CreateWindowExA(0,"BUTTON","test",WS_VISIBLE|WS_POPUP,0,0,100,100,GetDesktopWindow(),0,0,0);
  29     HDC hdc;
  30     HRGN hrgn = CreateRectRgn(0, 0, 0, 0);
  31     int ret;
  32     RECT rc, rc2;
  33     RECT ret_rc, window_rc;
  34
  35     ok( hwnd != 0, "CreateWindow failed\n" );
  36
  37     SetRect(&window_rc, 400, 300, 500, 400);
  38     MoveWindow(hwnd, window_rc.left, window_rc.top, window_rc.right - window_rc.left, window_rc.bottom - window_rc.top, FALSE);
  39     hdc = GetDC(hwnd);
  40
  41     ret = GetRandomRgn(hdc, hrgn, 1);
  42     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  43     ret = GetRandomRgn(hdc, hrgn, 2);
  44     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  45     ret = GetRandomRgn(hdc, hrgn, 3);
  46     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  47
  48     /* Set a clip region */
  49     SetRect(&rc, 20, 20, 80, 80);
  50     IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
  51
  52     ret = GetRandomRgn(hdc, hrgn, 1);
  53     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  54     GetRgnBox(hrgn, &ret_rc);
  55     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  56        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  57
  58     ret = GetRandomRgn(hdc, hrgn, 2);
  59     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  60
  61     ret = GetRandomRgn(hdc, hrgn, 3);
  62     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  63     GetRgnBox(hrgn, &ret_rc);
  64     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  65        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  66
  67     /* Move the clip to the meta and clear the clip */
  68     SetMetaRgn(hdc);
  69
  70     ret = GetRandomRgn(hdc, hrgn, 1);
  71     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  72     ret = GetRandomRgn(hdc, hrgn, 2);
  73     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  74     GetRgnBox(hrgn, &ret_rc);
  75     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  76        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  77
  78     ret = GetRandomRgn(hdc, hrgn, 3);
  79     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  80     GetRgnBox(hrgn, &ret_rc);
  81     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  82        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  83
  84     /* Set a new clip (still got the meta) */
  85     SetRect(&rc2, 10, 30, 70, 90);
  86     IntersectClipRect(hdc, rc2.left, rc2.top, rc2.right, rc2.bottom);
  87
  88     ret = GetRandomRgn(hdc, hrgn, 1);
  89     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  90     GetRgnBox(hrgn, &ret_rc);
  91     ok(EqualRect(&rc2, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  92        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  93
  94     ret = GetRandomRgn(hdc, hrgn, 2);
  95     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  96     GetRgnBox(hrgn, &ret_rc);
  97     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  98        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  99
 100     IntersectRect(&rc2, &rc, &rc2);
 101
 102     ret = GetRandomRgn(hdc, hrgn, 3);
 103     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
 104     GetRgnBox(hrgn, &ret_rc);
 105     ok(EqualRect(&rc2, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
 106        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
 107
 108
 109     ret = GetRandomRgn(hdc, hrgn, SYSRGN);
 110     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
 111     GetRgnBox(hrgn, &ret_rc);
 112     if(GetVersion() & 0x80000000)
 113         OffsetRect(&window_rc, -window_rc.left, -window_rc.top);
 114     ok(EqualRect(&window_rc, &ret_rc) ||
 115        broken(IsRectEmpty(&ret_rc)), /* win95 */
 116        "GetRandomRgn %d,%d - %d,%d\n",
 117        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
 118
 119     DeleteObject(hrgn);
 120     ReleaseDC(hwnd, hdc);
 121     DestroyWindow(hwnd);
 122 }
 123
 124 static void verify_region(HRGN hrgn, const RECT *rc)
 125 {
 126     union
 127     {
 128         RGNDATA data;
 129         char buf[sizeof(RGNDATAHEADER) + sizeof(RECT)];
 130     } rgn;
 131     const RECT *rect;
 132     DWORD ret;
 133
 134     ret = GetRegionData(hrgn, 0, NULL);
 135     if (IsRectEmpty(rc))
 136         ok(ret == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", ret);
 137     else
 138         ok(ret == sizeof(rgn.data.rdh) + sizeof(RECT), "expected sizeof(rgn), got %u\n", ret);
 139
 140     if (!ret) return;
 141
 142     ret = GetRegionData(hrgn, sizeof(rgn), &rgn.data);
 143     if (IsRectEmpty(rc))
 144         ok(ret == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", ret);
 145     else
 146         ok(ret == sizeof(rgn.data.rdh) + sizeof(RECT), "expected sizeof(rgn), got %u\n", ret);
 147
 148     trace("size %u, type %u, count %u, rgn size %u, bound (%d,%d-%d,%d)\n",
 149           rgn.data.rdh.dwSize, rgn.data.rdh.iType,
 150           rgn.data.rdh.nCount, rgn.data.rdh.nRgnSize,
 151           rgn.data.rdh.rcBound.left, rgn.data.rdh.rcBound.top,
 152           rgn.data.rdh.rcBound.right, rgn.data.rdh.rcBound.bottom);
 153     if (rgn.data.rdh.nCount != 0)
 154     {
 155         rect = (const RECT *)rgn.data.Buffer;
 156         trace("rect (%d,%d-%d,%d)\n", rect->left, rect->top, rect->right, rect->bottom);
 157         ok(EqualRect(rect, rc), "rects don't match\n");
 158     }
 159
 160     ok(rgn.data.rdh.dwSize == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", rgn.data.rdh.dwSize);
 161     ok(rgn.data.rdh.iType == RDH_RECTANGLES, "expected RDH_RECTANGLES, got %u\n", rgn.data.rdh.iType);
 162     if (IsRectEmpty(rc))
 163     {
 164         ok(rgn.data.rdh.nCount == 0, "expected 0, got %u\n", rgn.data.rdh.nCount);
 165         ok(rgn.data.rdh.nRgnSize == 0 ||
 166            broken(rgn.data.rdh.nRgnSize == 168), /* NT4 */
 167            "expected 0, got %u\n", rgn.data.rdh.nRgnSize);
 168     }
 169     else
 170     {
 171         ok(rgn.data.rdh.nCount == 1, "expected 1, got %u\n", rgn.data.rdh.nCount);
 172         ok(rgn.data.rdh.nRgnSize == sizeof(RECT) ||
 173            broken(rgn.data.rdh.nRgnSize == 168), /* NT4 */
 174            "expected sizeof(RECT), got %u\n", rgn.data.rdh.nRgnSize);
 175     }
 176     ok(EqualRect(&rgn.data.rdh.rcBound, rc), "rects don't match\n");
 177 }
 178
 179 static void test_ExtCreateRegion(void)
 180 {
 181     static const RECT empty_rect;
 182     static const RECT rc = { 111, 222, 333, 444 };
 183     static const RECT rc_xformed = { 76, 151, 187, 262 };
 184     union
 185     {
 186         RGNDATA data;
 187         char buf[sizeof(RGNDATAHEADER) + sizeof(RECT)];
 188     } rgn;
 189     HRGN hrgn;
 190     XFORM xform;
 191
 192     if (0) /* crashes under Win9x */
 193     {
 194         SetLastError(0xdeadbeef);
 195         hrgn = ExtCreateRegion(NULL, 0, NULL);
 196         ok(!hrgn, "ExtCreateRegion should fail\n");
 197         ok(GetLastError() == ERROR_INVALID_PARAMETER, "ERROR_INVALID_PARAMETER, got %u\n", GetLastError());
 198     }
 199
 200     rgn.data.rdh.dwSize = 0;
 201     rgn.data.rdh.iType = 0;
 202     rgn.data.rdh.nCount = 0;
 203     rgn.data.rdh.nRgnSize = 0;
 204     SetRectEmpty(&rgn.data.rdh.rcBound);
 205     memcpy(rgn.data.Buffer, &rc, sizeof(rc));
 206
 207     SetLastError(0xdeadbeef);
 208     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 209     ok(!hrgn, "ExtCreateRegion should fail\n");
 210     ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %u\n", GetLastError());
 211
 212     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) - 1;
 213
 214     SetLastError(0xdeadbeef);
 215     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 216     ok(!hrgn, "ExtCreateRegion should fail\n");
 217     ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %u\n", GetLastError());
 218
 219     /* although XP doesn't care about the type Win9x does */
 220     rgn.data.rdh.iType = RDH_RECTANGLES;
 221     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
 222
 223     SetLastError(0xdeadbeef);
 224     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 225     ok(hrgn != 0, "ExtCreateRegion error %u\n", GetLastError());
 226     verify_region(hrgn, &empty_rect);
 227     DeleteObject(hrgn);
 228
 229     rgn.data.rdh.nCount = 1;
 230     SetRectEmpty(&rgn.data.rdh.rcBound);
 231     memcpy(rgn.data.Buffer, &rc, sizeof(rc));
 232
 233     SetLastError(0xdeadbeef);
 234     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 235     ok(hrgn != 0, "ExtCreateRegion error %u\n", GetLastError());
 236     verify_region(hrgn, &rc);
 237     DeleteObject(hrgn);
 238
 239     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) + 1;
 240
 241     SetLastError(0xdeadbeef);
 242     hrgn = ExtCreateRegion(NULL, 1, &rgn.data);
 243     ok(hrgn != 0 ||
 244        broken(GetLastError() == 0xdeadbeef), /* NT4 */
 245        "ExtCreateRegion error %u\n", GetLastError());
 246     if(hrgn)
 247     {
 248         verify_region(hrgn, &rc);
 249         DeleteObject(hrgn);
 250     }
 251
 252     xform.eM11 = 0.5; /* 50% width */
 253     xform.eM12 = 0.0;
 254     xform.eM21 = 0.0;
 255     xform.eM22 = 0.5; /* 50% height */
 256     xform.eDx = 20.0;
 257     xform.eDy = 40.0;
 258
 259     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
 260
 261     SetLastError(0xdeadbeef);
 262     hrgn = ExtCreateRegion(&xform, sizeof(rgn), &rgn.data);
 263     ok(hrgn != 0, "ExtCreateRegion error %u/%x\n", GetLastError(), GetLastError());
 264     verify_region(hrgn, &rc_xformed);
 265     DeleteObject(hrgn);
 266 }
 267
 268 START_TEST(clipping)
 269 {
 270     test_GetRandomRgn();
 271     test_ExtCreateRegion();
 272 }