dlls/gdi32/tests/mapping.c

   1 /*
   2  * Unit tests for mapping functions
   3  *
   4  * Copyright (c) 2005 Huw Davies
   5  * Copyright (c) 2008 Dmitry  Timoshkov
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <assert.h>
  23 #include <stdio.h>
  24 #include <math.h>
  25
  26 #include "wine/test.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "winerror.h"
  31
  32 #define rough_match(got, expected) (abs((got) - (expected)) <= 5)
  33
  34 #define expect_LPtoDP(_hdc, _x, _y) \
  35 { \
  36     POINT _pt = { 1000, 1000 }; \
  37     LPtoDP(_hdc, &_pt, 1); \
  38     ok(rough_match(_pt.x, _x), "expected x %d, got %d\n", (_x), _pt.x); \
  39     ok(rough_match(_pt.y, _y), "expected y %d, got %d\n", (_y), _pt.y); \
  40 }
  41
  42 #define expect_world_trasform(_hdc, _em11, _em22) \
  43 { \
  44     BOOL _ret; \
  45     XFORM _xform; \
  46     SetLastError(0xdeadbeef); \
  47     _ret = GetWorldTransform(_hdc, &_xform); \
  48     if (GetLastError() != ERROR_CALL_NOT_IMPLEMENTED) \
  49     { \
  50         ok(_ret, "GetWorldTransform error %u\n", GetLastError()); \
  51         ok(_xform.eM11 == (_em11), "expected %f, got %f\n", (_em11), _xform.eM11); \
  52         ok(_xform.eM12 == 0.0, "expected 0.0, got %f\n", _xform.eM12); \
  53         ok(_xform.eM21 == 0.0, "expected 0.0, got %f\n", _xform.eM21); \
  54         ok(_xform.eM22 == (_em22), "expected %f, got %f\n", (_em22), _xform.eM22); \
  55         ok(_xform.eDx == 0.0, "expected 0.0, got %f\n", _xform.eDx); \
  56         ok(_xform.eDy == 0.0, "expected 0.0, got %f\n", _xform.eDy); \
  57     } \
  58 }
  59
  60 #define expect_dc_ext(_func, _hdc, _cx, _cy) \
  61 { \
  62     BOOL _ret; \
  63     SIZE _size; \
  64     SetLastError(0xdeadbeef); \
  65     _ret = _func(_hdc, &_size); \
  66     ok(_ret, #_func " error %u\n", GetLastError()); \
  67     ok(_size.cx == (_cx), "expected cx %d, got %d\n", (_cx), _size.cx); \
  68     ok(_size.cy == (_cy), "expected cy %d, got %d\n", (_cy), _size.cy); \
  69 }
  70
  71 #define expect_viewport_ext(_hdc, _cx, _cy) expect_dc_ext(GetViewportExtEx, _hdc, _cx, _cy)
  72 #define expect_window_ext(_hdc, _cx, _cy)  expect_dc_ext(GetWindowExtEx, _hdc, _cx, _cy)
  73
  74 static void test_world_transform(void)
  75 {
  76     BOOL is_win9x;
  77     HDC hdc;
  78     INT ret, size_cx, size_cy, res_x, res_y, dpi_x, dpi_y;
  79     XFORM xform;
  80     SIZE size;
  81
  82     SetLastError(0xdeadbeef);
  83     GetWorldTransform(0, NULL);
  84     is_win9x = GetLastError() == ERROR_CALL_NOT_IMPLEMENTED;
  85
  86     hdc = CreateCompatibleDC(0);
  87
  88     xform.eM11 = 1.0f;
  89     xform.eM12 = 0.0f;
  90     xform.eM21 = 0.0f;
  91     xform.eM22 = 1.0f;
  92     xform.eDx = 0.0f;
  93     xform.eDy = 0.0f;
  94     ret = SetWorldTransform(hdc, &xform);
  95     ok(!ret, "SetWorldTransform should fail in GM_COMPATIBLE mode\n");
  96
  97     size_cx = GetDeviceCaps(hdc, HORZSIZE);
  98     size_cy = GetDeviceCaps(hdc, VERTSIZE);
  99     res_x = GetDeviceCaps(hdc, HORZRES);
 100     res_y = GetDeviceCaps(hdc, VERTRES);
 101     dpi_x = GetDeviceCaps(hdc, LOGPIXELSX);
 102     dpi_y = GetDeviceCaps(hdc, LOGPIXELSY);
 103     trace("dc size %d x %d, resolution %d x %d dpi %d x %d\n",
 104           size_cx, size_cy, res_x, res_y, dpi_x, dpi_y );
 105
 106     expect_viewport_ext(hdc, 1, 1);
 107     expect_window_ext(hdc, 1, 1);
 108     expect_world_trasform(hdc, 1.0, 1.0);
 109     expect_LPtoDP(hdc, 1000, 1000);
 110
 111     SetLastError(0xdeadbeef);
 112     ret = SetMapMode(hdc, MM_LOMETRIC);
 113     ok(ret == MM_TEXT, "expected MM_TEXT, got %d\n", ret);
 114
 115     if (is_win9x)
 116     {
 117         expect_viewport_ext(hdc, dpi_x, dpi_y);
 118         expect_window_ext(hdc, 254, -254);
 119     }
 120     else
 121     {
 122         expect_viewport_ext(hdc, res_x, -res_y);
 123         ok( GetWindowExtEx( hdc, &size ), "GetWindowExtEx failed\n" );
 124         ok( size.cx == size_cx * 10 ||
 125             size.cx == MulDiv( res_x, 254, dpi_x ),  /* Vista uses a more precise method */
 126             "expected cx %d or %d, got %d\n", size_cx * 10, MulDiv( res_x, 254, dpi_x ), size.cx );
 127         ok( size.cy == size_cy * 10 ||
 128             size.cy == MulDiv( res_y, 254, dpi_y ),  /* Vista uses a more precise method */
 129             "expected cy %d or %d, got %d\n", size_cy * 10, MulDiv( res_y, 254, dpi_y ), size.cy );
 130     }
 131     expect_world_trasform(hdc, 1.0, 1.0);
 132     expect_LPtoDP(hdc, MulDiv(1000 / 10, res_x, size_cx), -MulDiv(1000 / 10, res_y, size_cy));
 133
 134     SetLastError(0xdeadbeef);
 135     ret = SetMapMode(hdc, MM_TEXT);
 136     ok(ret == MM_LOMETRIC, "expected MM_LOMETRIC, got %d\n", ret);
 137
 138     expect_viewport_ext(hdc, 1, 1);
 139     expect_window_ext(hdc, 1, 1);
 140     expect_world_trasform(hdc, 1.0, 1.0);
 141     expect_LPtoDP(hdc, 1000, 1000);
 142
 143     ret = SetGraphicsMode(hdc, GM_ADVANCED);
 144     if (!ret)
 145     {
 146         DeleteDC(hdc);
 147         skip("GM_ADVANCED is not supported on this platform\n");
 148         return;
 149     }
 150
 151     expect_viewport_ext(hdc, 1, 1);
 152     expect_window_ext(hdc, 1, 1);
 153     expect_world_trasform(hdc, 1.0, 1.0);
 154     expect_LPtoDP(hdc, 1000, 1000);
 155
 156     /* The transform must conform to (eM11 * eM22 != eM12 * eM21) requirement */
 157     xform.eM11 = 1.0f;
 158     xform.eM12 = 2.0f;
 159     xform.eM21 = 1.0f;
 160     xform.eM22 = 2.0f;
 161     xform.eDx = 0.0f;
 162     xform.eDy = 0.0f;
 163     ret = SetWorldTransform(hdc, &xform);
 164     ok(!ret ||
 165        broken(ret), /* NT4 */
 166        "SetWorldTransform should fail with an invalid xform\n");
 167
 168     xform.eM11 = 20.0f;
 169     xform.eM12 = 0.0f;
 170     xform.eM21 = 0.0f;
 171     xform.eM22 = 20.0f;
 172     xform.eDx = 0.0f;
 173     xform.eDy = 0.0f;
 174     SetLastError(0xdeadbeef);
 175     ret = SetWorldTransform(hdc, &xform);
 176     ok(ret, "SetWorldTransform error %u\n", GetLastError());
 177
 178     expect_viewport_ext(hdc, 1, 1);
 179     expect_window_ext(hdc, 1, 1);
 180     expect_world_trasform(hdc, 20.0, 20.0);
 181     expect_LPtoDP(hdc, 20000, 20000);
 182
 183     SetLastError(0xdeadbeef);
 184     ret = SetMapMode(hdc, MM_LOMETRIC);
 185     ok(ret == MM_TEXT, "expected MM_TEXT, got %d\n", ret);
 186
 187     expect_viewport_ext(hdc, res_x, -res_y);
 188     ok( GetWindowExtEx( hdc, &size ), "GetWindowExtEx failed\n" );
 189     ok( size.cx == size_cx * 10 ||
 190         size.cx == MulDiv( res_x, 254, dpi_x ),  /* Vista uses a more precise method */
 191         "expected cx %d or %d, got %d\n", size_cx * 10, MulDiv( res_x, 254, dpi_x ), size.cx );
 192     ok( size.cy == size_cy * 10 ||
 193         size.cy == MulDiv( res_y, 254, dpi_y ),  /* Vista uses a more precise method */
 194         "expected cy %d or %d, got %d\n", size_cy * 10, MulDiv( res_y, 254, dpi_y ), size.cy );
 195     expect_world_trasform(hdc, 20.0, 20.0);
 196     expect_LPtoDP(hdc, MulDiv(20000, res_x, size.cx), -MulDiv(20000, res_y, size.cy));
 197
 198     SetLastError(0xdeadbeef);
 199     ret = SetMapMode(hdc, MM_TEXT);
 200     ok(ret == MM_LOMETRIC, "expected MM_LOMETRIC, got %d\n", ret);
 201
 202     expect_viewport_ext(hdc, 1, 1);
 203     expect_window_ext(hdc, 1, 1);
 204     expect_world_trasform(hdc, 20.0, 20.0);
 205     expect_LPtoDP(hdc, 20000, 20000);
 206
 207     ret = SetGraphicsMode(hdc, GM_COMPATIBLE);
 208     ok(ret, "SetGraphicsMode(GM_COMPATIBLE) should not fail if DC has't an identity transform\n");
 209     ret = GetGraphicsMode(hdc);
 210     ok(ret == GM_COMPATIBLE, "expected GM_COMPATIBLE, got %d\n", ret);
 211
 212     expect_viewport_ext(hdc, 1, 1);
 213     expect_window_ext(hdc, 1, 1);
 214     expect_world_trasform(hdc, 20.0, 20.0);
 215     expect_LPtoDP(hdc, 20000, 20000);
 216
 217     DeleteDC(hdc);
 218 }
 219
 220 static void test_modify_world_transform(void)
 221 {
 222     HDC hdc = GetDC(0);
 223     int ret;
 224
 225     ret = SetGraphicsMode(hdc, GM_ADVANCED);
 226     if(!ret) /* running in win9x so quit */
 227     {
 228         ReleaseDC(0, hdc);
 229         skip("GM_ADVANCED is not supported on this platform\n");
 230         return;
 231     }
 232
 233     ret = ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
 234     ok(ret, "ret = %d\n", ret);
 235
 236     ret = ModifyWorldTransform(hdc, NULL, MWT_LEFTMULTIPLY);
 237     ok(!ret, "ret = %d\n", ret);
 238
 239     ret = ModifyWorldTransform(hdc, NULL, MWT_RIGHTMULTIPLY);
 240     ok(!ret, "ret = %d\n", ret);
 241
 242     ReleaseDC(0, hdc);
 243 }
 244
 245 static void test_SetWindowExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
 246 {
 247     SIZE windowExt, viewportExt;
 248     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
 249
 250     GetWindowOrgEx(hdc, &windowOrg);
 251     GetViewportOrgEx(hdc, &viewportOrg);
 252
 253     SetWindowExtEx(hdc, cx, cy, NULL);
 254     GetWindowExtEx(hdc, &windowExt);
 255     ok(windowExt.cx == cx && windowExt.cy == cy,
 256        "Window extension: Expected %dx%d, got %dx%d\n",
 257        cx, cy, windowExt.cx, windowExt.cy);
 258
 259     GetViewportExtEx(hdc, &viewportExt);
 260     ok(rough_match(viewportExt.cx, expected_vp_cx) && rough_match(viewportExt.cy, expected_vp_cy),
 261         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
 262         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 263
 264     GetWindowOrgEx(hdc, &windowOrgAfter);
 265     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
 266         "Window origin changed from (%d,%d) to (%d,%d)\n",
 267         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
 268
 269     GetViewportOrgEx(hdc, &viewportOrgAfter);
 270     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
 271         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
 272         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
 273 }
 274
 275 static void test_SetViewportExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
 276 {
 277     SIZE windowExt, windowExtAfter, viewportExt;
 278     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
 279
 280     GetWindowOrgEx(hdc, &windowOrg);
 281     GetViewportOrgEx(hdc, &viewportOrg);
 282     GetWindowExtEx(hdc, &windowExt);
 283
 284     SetViewportExtEx(hdc, cx, cy, NULL);
 285     GetViewportExtEx(hdc, &viewportExt);
 286     ok(rough_match(viewportExt.cx, expected_vp_cx) && rough_match(viewportExt.cy, expected_vp_cy),
 287         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
 288         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 289
 290     GetWindowExtEx(hdc, &windowExtAfter);
 291     ok(windowExt.cx == windowExtAfter.cx && windowExt.cy == windowExtAfter.cy,
 292        "Window extension changed from %dx%d to %dx%d\n",
 293        windowExt.cx, windowExt.cy, windowExtAfter.cx, windowExtAfter.cy);
 294
 295     GetWindowOrgEx(hdc, &windowOrgAfter);
 296     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
 297         "Window origin changed from (%d,%d) to (%d,%d)\n",
 298         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
 299
 300     GetViewportOrgEx(hdc, &viewportOrgAfter);
 301     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
 302         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
 303         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
 304 }
 305
 306 static void test_isotropic_mapping(void)
 307 {
 308     SIZE win, vp;
 309     HDC hdc = GetDC(0);
 310
 311     SetMapMode(hdc, MM_ISOTROPIC);
 312
 313     /* MM_ISOTROPIC is set up like MM_LOMETRIC.
 314        Initial values after SetMapMode():
 315        (1 inch = 25.4 mm)
 316
 317                        Windows 9x:               Windows NT:
 318        Window Ext:     254 x -254                HORZSIZE*10 x VERTSIZE*10
 319        Viewport Ext:   LOGPIXELSX x LOGPIXELSY   HORZRES x -VERTRES
 320
 321        To test without rounding errors, we have to use multiples of
 322        these values!
 323      */
 324
 325     GetWindowExtEx(hdc, &win);
 326     GetViewportExtEx(hdc, &vp);
 327
 328     test_SetViewportExt(hdc, 10 * vp.cx, 10 * vp.cy, 10 * vp.cx, 10 * vp.cy);
 329     test_SetWindowExt(hdc, win.cx, win.cy, 10 * vp.cx, 10 * vp.cy);
 330     test_SetWindowExt(hdc, 2 * win.cx, win.cy, 10 * vp.cx, 5 * vp.cy);
 331     test_SetWindowExt(hdc, win.cx, win.cy, 5 * vp.cx, 5 * vp.cy);
 332     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 333     test_SetViewportExt(hdc, vp.cx, 2 * vp.cy, vp.cx, vp.cy);
 334     test_SetViewportExt(hdc, 2 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 335     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 336     test_SetWindowExt(hdc, 4 * win.cx, 2 * win.cy, 2 * vp.cx, vp.cy);
 337     test_SetViewportExt(hdc, -2 * vp.cx, -4 * vp.cy, -2 * vp.cx, -vp.cy);
 338     test_SetViewportExt(hdc, -2 * vp.cx, -1 * vp.cy, -2 * vp.cx, -vp.cy);
 339     test_SetWindowExt(hdc, -4 * win.cx, -2 * win.cy, -2 * vp.cx, -vp.cy);
 340     test_SetWindowExt(hdc, 4 * win.cx, -4 * win.cy, -vp.cx, -vp.cy);
 341
 342     ReleaseDC(0, hdc);
 343 }
 344
 345 START_TEST(mapping)
 346 {
 347     test_modify_world_transform();
 348     test_world_transform();
 349     test_isotropic_mapping();
 350 }