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     size_cx = GetDeviceCaps(hdc, HORZSIZE);
  89     size_cy = GetDeviceCaps(hdc, VERTSIZE);
  90     res_x = GetDeviceCaps(hdc, HORZRES);
  91     res_y = GetDeviceCaps(hdc, VERTRES);
  92     dpi_x = GetDeviceCaps(hdc, LOGPIXELSX);
  93     dpi_y = GetDeviceCaps(hdc, LOGPIXELSY);
  94     trace("dc size %d x %d, resolution %d x %d dpi %d x %d\n",
  95           size_cx, size_cy, res_x, res_y, dpi_x, dpi_y );
  96
  97     expect_viewport_ext(hdc, 1, 1);
  98     expect_window_ext(hdc, 1, 1);
  99     expect_world_trasform(hdc, 1.0, 1.0);
 100     expect_LPtoDP(hdc, 1000, 1000);
 101
 102     SetLastError(0xdeadbeef);
 103     ret = SetMapMode(hdc, MM_LOMETRIC);
 104     ok(ret == MM_TEXT, "expected MM_TEXT, got %d\n", ret);
 105
 106     if (is_win9x)
 107     {
 108         expect_viewport_ext(hdc, dpi_x, dpi_y);
 109         expect_window_ext(hdc, 254, -254);
 110     }
 111     else
 112     {
 113         expect_viewport_ext(hdc, res_x, -res_y);
 114         ok( GetWindowExtEx( hdc, &size ), "GetWindowExtEx failed\n" );
 115         ok( size.cx == size_cx * 10 ||
 116             size.cx == MulDiv( res_x, 254, dpi_x ),  /* Vista uses a more precise method */
 117             "expected cx %d or %d, got %d\n", size_cx * 10, MulDiv( res_x, 254, dpi_x ), size.cx );
 118         ok( size.cy == size_cy * 10 ||
 119             size.cy == MulDiv( res_y, 254, dpi_y ),  /* Vista uses a more precise method */
 120             "expected cy %d or %d, got %d\n", size_cy * 10, MulDiv( res_y, 254, dpi_y ), size.cy );
 121     }
 122     expect_world_trasform(hdc, 1.0, 1.0);
 123     expect_LPtoDP(hdc, MulDiv(1000 / 10, res_x, size_cx), -MulDiv(1000 / 10, res_y, size_cy));
 124
 125     SetLastError(0xdeadbeef);
 126     ret = SetMapMode(hdc, MM_TEXT);
 127     ok(ret == MM_LOMETRIC, "expected MM_LOMETRIC, got %d\n", ret);
 128
 129     expect_viewport_ext(hdc, 1, 1);
 130     expect_window_ext(hdc, 1, 1);
 131     expect_world_trasform(hdc, 1.0, 1.0);
 132     expect_LPtoDP(hdc, 1000, 1000);
 133
 134     ret = SetGraphicsMode(hdc, GM_ADVANCED);
 135     if (!ret)
 136     {
 137         DeleteDC(hdc);
 138         skip("GM_ADVANCED is not supported on this platform\n");
 139         return;
 140     }
 141
 142     expect_viewport_ext(hdc, 1, 1);
 143     expect_window_ext(hdc, 1, 1);
 144     expect_world_trasform(hdc, 1.0, 1.0);
 145     expect_LPtoDP(hdc, 1000, 1000);
 146
 147     xform.eM11 = 20.0f;
 148     xform.eM12 = 0.0f;
 149     xform.eM21 = 0.0f;
 150     xform.eM22 = 20.0f;
 151     xform.eDx = 0.0f;
 152     xform.eDy = 0.0f;
 153     SetLastError(0xdeadbeef);
 154     ret = SetWorldTransform(hdc, &xform);
 155     ok(ret, "SetWorldTransform error %u\n", GetLastError());
 156
 157     expect_viewport_ext(hdc, 1, 1);
 158     expect_window_ext(hdc, 1, 1);
 159     expect_world_trasform(hdc, 20.0, 20.0);
 160     expect_LPtoDP(hdc, 20000, 20000);
 161
 162     SetLastError(0xdeadbeef);
 163     ret = SetMapMode(hdc, MM_LOMETRIC);
 164     ok(ret == MM_TEXT, "expected MM_TEXT, got %d\n", ret);
 165
 166     expect_viewport_ext(hdc, res_x, -res_y);
 167     ok( GetWindowExtEx( hdc, &size ), "GetWindowExtEx failed\n" );
 168     ok( size.cx == size_cx * 10 ||
 169         size.cx == MulDiv( res_x, 254, dpi_x ),  /* Vista uses a more precise method */
 170         "expected cx %d or %d, got %d\n", size_cx * 10, MulDiv( res_x, 254, dpi_x ), size.cx );
 171     ok( size.cy == size_cy * 10 ||
 172         size.cy == MulDiv( res_y, 254, dpi_y ),  /* Vista uses a more precise method */
 173         "expected cy %d or %d, got %d\n", size_cy * 10, MulDiv( res_y, 254, dpi_y ), size.cy );
 174     expect_world_trasform(hdc, 20.0, 20.0);
 175     expect_LPtoDP(hdc, MulDiv(20000, res_x, size.cx), -MulDiv(20000, res_y, size.cy));
 176
 177     SetLastError(0xdeadbeef);
 178     ret = SetMapMode(hdc, MM_TEXT);
 179     ok(ret == MM_LOMETRIC, "expected MM_LOMETRIC, got %d\n", ret);
 180
 181     expect_viewport_ext(hdc, 1, 1);
 182     expect_window_ext(hdc, 1, 1);
 183     expect_world_trasform(hdc, 20.0, 20.0);
 184     expect_LPtoDP(hdc, 20000, 20000);
 185
 186     DeleteDC(hdc);
 187 }
 188
 189 static void test_modify_world_transform(void)
 190 {
 191     HDC hdc = GetDC(0);
 192     int ret;
 193
 194     ret = SetGraphicsMode(hdc, GM_ADVANCED);
 195     if(!ret) /* running in win9x so quit */
 196     {
 197         ReleaseDC(0, hdc);
 198         skip("GM_ADVANCED is not supported on this platform\n");
 199         return;
 200     }
 201
 202     ret = ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
 203     ok(ret, "ret = %d\n", ret);
 204
 205     ret = ModifyWorldTransform(hdc, NULL, MWT_LEFTMULTIPLY);
 206     ok(!ret, "ret = %d\n", ret);
 207
 208     ret = ModifyWorldTransform(hdc, NULL, MWT_RIGHTMULTIPLY);
 209     ok(!ret, "ret = %d\n", ret);
 210
 211     ReleaseDC(0, hdc);
 212 }
 213
 214 static void test_SetWindowExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
 215 {
 216     SIZE windowExt, viewportExt;
 217     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
 218
 219     GetWindowOrgEx(hdc, &windowOrg);
 220     GetViewportOrgEx(hdc, &viewportOrg);
 221
 222     SetWindowExtEx(hdc, cx, cy, NULL);
 223     GetWindowExtEx(hdc, &windowExt);
 224     ok(windowExt.cx == cx && windowExt.cy == cy,
 225        "Window extension: Expected %dx%d, got %dx%d\n",
 226        cx, cy, windowExt.cx, windowExt.cy);
 227
 228     GetViewportExtEx(hdc, &viewportExt);
 229     ok(rough_match(viewportExt.cx, expected_vp_cx) && rough_match(viewportExt.cy, expected_vp_cy),
 230         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
 231         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 232
 233     GetWindowOrgEx(hdc, &windowOrgAfter);
 234     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
 235         "Window origin changed from (%d,%d) to (%d,%d)\n",
 236         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
 237
 238     GetViewportOrgEx(hdc, &viewportOrgAfter);
 239     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
 240         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
 241         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
 242 }
 243
 244 static void test_SetViewportExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
 245 {
 246     SIZE windowExt, windowExtAfter, viewportExt;
 247     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
 248
 249     GetWindowOrgEx(hdc, &windowOrg);
 250     GetViewportOrgEx(hdc, &viewportOrg);
 251     GetWindowExtEx(hdc, &windowExt);
 252
 253     SetViewportExtEx(hdc, cx, cy, NULL);
 254     GetViewportExtEx(hdc, &viewportExt);
 255     ok(rough_match(viewportExt.cx, expected_vp_cx) && rough_match(viewportExt.cy, expected_vp_cy),
 256         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
 257         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 258
 259     GetWindowExtEx(hdc, &windowExtAfter);
 260     ok(windowExt.cx == windowExtAfter.cx && windowExt.cy == windowExtAfter.cy,
 261        "Window extension changed from %dx%d to %dx%d\n",
 262        windowExt.cx, windowExt.cy, windowExtAfter.cx, windowExtAfter.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_isotropic_mapping(void)
 276 {
 277     SIZE win, vp;
 278     HDC hdc = GetDC(0);
 279
 280     SetMapMode(hdc, MM_ISOTROPIC);
 281
 282     /* MM_ISOTROPIC is set up like MM_LOMETRIC.
 283        Initial values after SetMapMode():
 284        (1 inch = 25.4 mm)
 285
 286                        Windows 9x:               Windows NT:
 287        Window Ext:     254 x -254                HORZSIZE*10 x VERTSIZE*10
 288        Viewport Ext:   LOGPIXELSX x LOGPIXELSY   HORZRES x -VERTRES
 289
 290        To test without rounding errors, we have to use multiples of
 291        these values!
 292      */
 293
 294     GetWindowExtEx(hdc, &win);
 295     GetViewportExtEx(hdc, &vp);
 296
 297     test_SetViewportExt(hdc, 10 * vp.cx, 10 * vp.cy, 10 * vp.cx, 10 * vp.cy);
 298     test_SetWindowExt(hdc, win.cx, win.cy, 10 * vp.cx, 10 * vp.cy);
 299     test_SetWindowExt(hdc, 2 * win.cx, win.cy, 10 * vp.cx, 5 * vp.cy);
 300     test_SetWindowExt(hdc, win.cx, win.cy, 5 * vp.cx, 5 * vp.cy);
 301     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 302     test_SetViewportExt(hdc, vp.cx, 2 * vp.cy, vp.cx, vp.cy);
 303     test_SetViewportExt(hdc, 2 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 304     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 305     test_SetWindowExt(hdc, 4 * win.cx, 2 * win.cy, 2 * vp.cx, vp.cy);
 306     test_SetViewportExt(hdc, -2 * vp.cx, -4 * vp.cy, -2 * vp.cx, -vp.cy);
 307     test_SetViewportExt(hdc, -2 * vp.cx, -1 * vp.cy, -2 * vp.cx, -vp.cy);
 308     test_SetWindowExt(hdc, -4 * win.cx, -2 * win.cy, -2 * vp.cx, -vp.cy);
 309     test_SetWindowExt(hdc, 4 * win.cx, -4 * win.cy, -vp.cx, -vp.cy);
 310
 311     ReleaseDC(0, hdc);
 312 }
 313
 314 START_TEST(mapping)
 315 {
 316     test_modify_world_transform();
 317     test_world_transform();
 318     test_isotropic_mapping();
 319 }