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;
  79     XFORM xform;
  80
  81     SetLastError(0xdeadbeef);
  82     GetWorldTransform(0, NULL);
  83     is_win9x = GetLastError() == ERROR_CALL_NOT_IMPLEMENTED;
  84
  85     hdc = CreateCompatibleDC(0);
  86
  87     size_cx = GetDeviceCaps(hdc, HORZSIZE);
  88     size_cy = GetDeviceCaps(hdc, VERTSIZE);
  89     res_x = GetDeviceCaps(hdc, HORZRES);
  90     res_y = GetDeviceCaps(hdc, VERTRES);
  91     trace("dc size %d x %d, resolution %d x %d\n", size_cx, size_cy, res_x, res_y);
  92
  93     expect_viewport_ext(hdc, 1, 1);
  94     expect_window_ext(hdc, 1, 1);
  95     expect_world_trasform(hdc, 1.0, 1.0);
  96     expect_LPtoDP(hdc, 1000, 1000);
  97
  98     SetLastError(0xdeadbeef);
  99     ret = SetMapMode(hdc, MM_LOMETRIC);
 100     ok(ret == MM_TEXT, "expected MM_TEXT, got %d\n", ret);
 101
 102     if (is_win9x)
 103     {
 104         expect_viewport_ext(hdc, 96, 96);
 105         expect_window_ext(hdc, 254, -254);
 106     }
 107     else
 108     {
 109         expect_viewport_ext(hdc, res_x, -res_y);
 110         expect_window_ext(hdc, size_cx * 10, size_cy * 10);
 111     }
 112     expect_world_trasform(hdc, 1.0, 1.0);
 113     expect_LPtoDP(hdc, MulDiv(1000 / 10, res_x, size_cx), -MulDiv(1000 / 10, res_y, size_cy));
 114
 115     SetLastError(0xdeadbeef);
 116     ret = SetMapMode(hdc, MM_TEXT);
 117     ok(ret == MM_LOMETRIC, "expected MM_LOMETRIC, got %d\n", ret);
 118
 119     expect_viewport_ext(hdc, 1, 1);
 120     expect_window_ext(hdc, 1, 1);
 121     expect_world_trasform(hdc, 1.0, 1.0);
 122     expect_LPtoDP(hdc, 1000, 1000);
 123
 124     ret = SetGraphicsMode(hdc, GM_ADVANCED);
 125     if (!ret)
 126     {
 127         DeleteDC(hdc);
 128         skip("GM_ADVANCED is not supported on this platform\n");
 129         return;
 130     }
 131
 132     expect_viewport_ext(hdc, 1, 1);
 133     expect_window_ext(hdc, 1, 1);
 134     expect_world_trasform(hdc, 1.0, 1.0);
 135     expect_LPtoDP(hdc, 1000, 1000);
 136
 137     xform.eM11 = 20.0f;
 138     xform.eM12 = 0.0f;
 139     xform.eM21 = 0.0f;
 140     xform.eM22 = 20.0f;
 141     xform.eDx = 0.0f;
 142     xform.eDy = 0.0f;
 143     SetLastError(0xdeadbeef);
 144     ret = SetWorldTransform(hdc, &xform);
 145     ok(ret, "SetWorldTransform error %u\n", GetLastError());
 146
 147     expect_viewport_ext(hdc, 1, 1);
 148     expect_window_ext(hdc, 1, 1);
 149     expect_world_trasform(hdc, 20.0, 20.0);
 150     expect_LPtoDP(hdc, 20000, 20000);
 151
 152     SetLastError(0xdeadbeef);
 153     ret = SetMapMode(hdc, MM_LOMETRIC);
 154     ok(ret == MM_TEXT, "expected MM_TEXT, got %d\n", ret);
 155
 156     expect_viewport_ext(hdc, res_x, -res_y);
 157     expect_window_ext(hdc, size_cx * 10, size_cy * 10);
 158     expect_world_trasform(hdc, 20.0, 20.0);
 159     expect_LPtoDP(hdc, MulDiv(1000 * 2, res_x, size_cx), -MulDiv(1000 * 2, res_y, size_cy));
 160
 161     SetLastError(0xdeadbeef);
 162     ret = SetMapMode(hdc, MM_TEXT);
 163     ok(ret == MM_LOMETRIC, "expected MM_LOMETRIC, got %d\n", ret);
 164
 165     expect_viewport_ext(hdc, 1, 1);
 166     expect_window_ext(hdc, 1, 1);
 167     expect_world_trasform(hdc, 20.0, 20.0);
 168     expect_LPtoDP(hdc, 20000, 20000);
 169
 170     DeleteDC(hdc);
 171 }
 172
 173 static void test_modify_world_transform(void)
 174 {
 175     HDC hdc = GetDC(0);
 176     int ret;
 177
 178     ret = SetGraphicsMode(hdc, GM_ADVANCED);
 179     if(!ret) /* running in win9x so quit */
 180     {
 181         ReleaseDC(0, hdc);
 182         skip("GM_ADVANCED is not supported on this platform\n");
 183         return;
 184     }
 185
 186     ret = ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
 187     ok(ret, "ret = %d\n", ret);
 188
 189     ret = ModifyWorldTransform(hdc, NULL, MWT_LEFTMULTIPLY);
 190     ok(!ret, "ret = %d\n", ret);
 191
 192     ret = ModifyWorldTransform(hdc, NULL, MWT_RIGHTMULTIPLY);
 193     ok(!ret, "ret = %d\n", ret);
 194
 195     ReleaseDC(0, hdc);
 196 }
 197
 198 static void test_SetWindowExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
 199 {
 200     SIZE windowExt, viewportExt;
 201     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
 202
 203     GetWindowOrgEx(hdc, &windowOrg);
 204     GetViewportOrgEx(hdc, &viewportOrg);
 205
 206     SetWindowExtEx(hdc, cx, cy, NULL);
 207     GetWindowExtEx(hdc, &windowExt);
 208     ok(windowExt.cx == cx && windowExt.cy == cy,
 209        "Window extension: Expected %dx%d, got %dx%d\n",
 210        cx, cy, windowExt.cx, windowExt.cy);
 211
 212     GetViewportExtEx(hdc, &viewportExt);
 213     ok(rough_match(viewportExt.cx, expected_vp_cx) && rough_match(viewportExt.cy, expected_vp_cy),
 214         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
 215         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 216
 217     GetWindowOrgEx(hdc, &windowOrgAfter);
 218     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
 219         "Window origin changed from (%d,%d) to (%d,%d)\n",
 220         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
 221
 222     GetViewportOrgEx(hdc, &viewportOrgAfter);
 223     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
 224         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
 225         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
 226 }
 227
 228 static void test_SetViewportExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
 229 {
 230     SIZE windowExt, windowExtAfter, viewportExt;
 231     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
 232
 233     GetWindowOrgEx(hdc, &windowOrg);
 234     GetViewportOrgEx(hdc, &viewportOrg);
 235     GetWindowExtEx(hdc, &windowExt);
 236
 237     SetViewportExtEx(hdc, cx, cy, NULL);
 238     GetViewportExtEx(hdc, &viewportExt);
 239     ok(rough_match(viewportExt.cx, expected_vp_cx) && rough_match(viewportExt.cy, expected_vp_cy),
 240         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
 241         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 242
 243     GetWindowExtEx(hdc, &windowExtAfter);
 244     ok(windowExt.cx == windowExtAfter.cx && windowExt.cy == windowExtAfter.cy,
 245        "Window extension changed from %dx%d to %dx%d\n",
 246        windowExt.cx, windowExt.cy, windowExtAfter.cx, windowExtAfter.cy);
 247
 248     GetWindowOrgEx(hdc, &windowOrgAfter);
 249     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
 250         "Window origin changed from (%d,%d) to (%d,%d)\n",
 251         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
 252
 253     GetViewportOrgEx(hdc, &viewportOrgAfter);
 254     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
 255         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
 256         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
 257 }
 258
 259 static void test_isotropic_mapping(void)
 260 {
 261     SIZE win, vp;
 262     HDC hdc = GetDC(0);
 263
 264     SetMapMode(hdc, MM_ISOTROPIC);
 265
 266     /* MM_ISOTROPIC is set up like MM_LOMETRIC.
 267        Initial values after SetMapMode():
 268        (1 inch = 25.4 mm)
 269
 270                        Windows 9x:               Windows NT:
 271        Window Ext:     254 x -254                HORZSIZE*10 x VERTSIZE*10
 272        Viewport Ext:   LOGPIXELSX x LOGPIXELSY   HORZRES x -VERTRES
 273
 274        To test without rounding errors, we have to use multiples of
 275        these values!
 276      */
 277
 278     GetWindowExtEx(hdc, &win);
 279     GetViewportExtEx(hdc, &vp);
 280
 281     test_SetViewportExt(hdc, 10 * vp.cx, 10 * vp.cy, 10 * vp.cx, 10 * vp.cy);
 282     test_SetWindowExt(hdc, win.cx, win.cy, 10 * vp.cx, 10 * vp.cy);
 283     test_SetWindowExt(hdc, 2 * win.cx, win.cy, 10 * vp.cx, 5 * vp.cy);
 284     test_SetWindowExt(hdc, win.cx, win.cy, 5 * vp.cx, 5 * vp.cy);
 285     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 286     test_SetViewportExt(hdc, vp.cx, 2 * vp.cy, vp.cx, vp.cy);
 287     test_SetViewportExt(hdc, 2 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 288     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 289     test_SetWindowExt(hdc, 4 * win.cx, 2 * win.cy, 2 * vp.cx, vp.cy);
 290     test_SetViewportExt(hdc, -2 * vp.cx, -4 * vp.cy, -2 * vp.cx, -vp.cy);
 291     test_SetViewportExt(hdc, -2 * vp.cx, -1 * vp.cy, -2 * vp.cx, -vp.cy);
 292     test_SetWindowExt(hdc, -4 * win.cx, -2 * win.cy, -2 * vp.cx, -vp.cy);
 293     test_SetWindowExt(hdc, 4 * win.cx, -4 * win.cy, -vp.cx, -vp.cy);
 294
 295     ReleaseDC(0, hdc);
 296 }
 297
 298 START_TEST(mapping)
 299 {
 300     test_modify_world_transform();
 301     test_world_transform();
 302     test_isotropic_mapping();
 303 }