dlls/gdi/tests/font.c

   1 /*
   2  * Unit test suite for fonts
   3  *
   4  * Copyright 2002 Mike McCormack
   5  * Copyright 2004 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 <stdarg.h>
  23 #include <assert.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29
  30 #include "wine/test.h"
  31
  32 static void check_font(const char* test, const LOGFONTA* lf, HFONT hfont)
  33 {
  34     LOGFONTA getobj_lf;
  35     int ret, minlen = 0;
  36
  37     if (!hfont)
  38         return;
  39
  40     ret = GetObject(hfont, sizeof(getobj_lf), &getobj_lf);
  41     /* NT4 tries to be clever and only returns the minimum length */
  42     while (lf->lfFaceName[minlen] && minlen < LF_FACESIZE-1)
  43         minlen++;
  44     minlen += FIELD_OFFSET(LOGFONTA, lfFaceName) + 1;
  45     ok(ret == sizeof(LOGFONTA) || ret == minlen, "%s: GetObject returned %d\n", test, ret);
  46     ok(!memcmp(&lf, &lf, FIELD_OFFSET(LOGFONTA, lfFaceName)), "%s: fonts don't match\n", test);
  47     ok(!lstrcmpA(lf->lfFaceName, getobj_lf.lfFaceName),
  48        "%s: font names don't match: %s != %s\n", test, lf->lfFaceName, getobj_lf.lfFaceName);
  49 }
  50
  51 static HFONT create_font(const char* test, const LOGFONTA* lf)
  52 {
  53     HFONT hfont = CreateFontIndirectA(lf);
  54     ok(hfont != 0, "%s: CreateFontIndirect failed\n", test);
  55     if (hfont)
  56         check_font(test, lf, hfont);
  57     return hfont;
  58 }
  59
  60 static void test_logfont(void)
  61 {
  62     LOGFONTA lf;
  63     HFONT hfont;
  64
  65     memset(&lf, 0, sizeof lf);
  66
  67     lf.lfCharSet = ANSI_CHARSET;
  68     lf.lfClipPrecision = CLIP_DEFAULT_PRECIS;
  69     lf.lfWeight = FW_DONTCARE;
  70     lf.lfHeight = 16;
  71     lf.lfWidth = 16;
  72     lf.lfQuality = DEFAULT_QUALITY;
  73
  74     lstrcpyA(lf.lfFaceName, "Arial");
  75     hfont = create_font("Arial", &lf);
  76     DeleteObject(hfont);
  77
  78     memset(&lf, 'A', sizeof(lf));
  79     hfont = CreateFontIndirectA(&lf);
  80     ok(hfont != 0, "CreateFontIndirectA with strange LOGFONT failed\n");
  81
  82     lf.lfFaceName[LF_FACESIZE - 1] = 0;
  83     check_font("AAA...", &lf, hfont);
  84     DeleteObject(hfont);
  85 }
  86
  87 static INT CALLBACK font_enum_proc(const LOGFONT *elf, const TEXTMETRIC *ntm, DWORD type, LPARAM lParam)
  88 {
  89     if (type & RASTER_FONTTYPE)
  90     {
  91         LOGFONT *lf = (LOGFONT *)lParam;
  92         *lf = *elf;
  93         return 0; /* stop enumeration */
  94     }
  95
  96     return 1; /* continue enumeration */
  97 }
  98
  99 static void test_font_metrics(HDC hdc, HFONT hfont, const char *test_str,
 100                               INT test_str_len, const TEXTMETRICA *tm_orig,
 101                               const SIZE *size_orig, INT width_orig,
 102                               INT scale_x, INT scale_y)
 103 {
 104     HFONT old_hfont;
 105     TEXTMETRICA tm;
 106     SIZE size;
 107     INT width;
 108
 109     if (!hfont)
 110         return;
 111
 112     old_hfont = SelectObject(hdc, hfont);
 113
 114     GetTextMetricsA(hdc, &tm);
 115
 116     ok(tm.tmHeight == tm_orig->tmHeight * scale_y, "%ld != %ld\n", tm.tmHeight, tm_orig->tmHeight * scale_y);
 117     ok(tm.tmAscent == tm_orig->tmAscent * scale_y, "%ld != %ld\n", tm.tmAscent, tm_orig->tmAscent * scale_y);
 118     ok(tm.tmDescent == tm_orig->tmDescent * scale_y, "%ld != %ld\n", tm.tmDescent, tm_orig->tmDescent * scale_y);
 119     ok(tm.tmAveCharWidth == tm_orig->tmAveCharWidth * scale_x, "%ld != %ld\n", tm.tmAveCharWidth, tm_orig->tmAveCharWidth * scale_x);
 120
 121     GetTextExtentPoint32A(hdc, test_str, test_str_len, &size);
 122
 123     ok(size.cx == size_orig->cx * scale_x, "%ld != %ld\n", size.cx, size_orig->cx * scale_x);
 124     ok(size.cy == size_orig->cy * scale_y, "%ld != %ld\n", size.cy, size_orig->cy * scale_y);
 125
 126     GetCharWidthA(hdc, 'A', 'A', &width);
 127
 128     ok(width == width_orig * scale_x, "%d != %d\n", width, width_orig * scale_x);
 129
 130     SelectObject(hdc, old_hfont);
 131 }
 132
 133 /* see whether GDI scales bitmap font metrics */
 134 static void test_bitmap_font(void)
 135 {
 136     static const char test_str[11] = "Test String";
 137     HDC hdc;
 138     LOGFONTA bitmap_lf;
 139     HFONT hfont, old_hfont;
 140     TEXTMETRICA tm_orig;
 141     SIZE size_orig;
 142     INT ret, i, width_orig, height_orig;
 143
 144     hdc = GetDC(0);
 145
 146     /* "System" has only 1 pixel size defined, otherwise the test breaks */
 147     ret = EnumFontFamiliesA(hdc, "System", font_enum_proc, (LPARAM)&bitmap_lf);
 148     if (ret)
 149     {
 150         ReleaseDC(0, hdc);
 151         trace("no bitmap fonts were found, skipping the test\n");
 152         return;
 153     }
 154
 155     trace("found bitmap font %s, height %ld\n", bitmap_lf.lfFaceName, bitmap_lf.lfHeight);
 156
 157     height_orig = bitmap_lf.lfHeight;
 158     hfont = create_font("bitmap", &bitmap_lf);
 159
 160     old_hfont = SelectObject(hdc, hfont);
 161     ok(GetTextMetricsA(hdc, &tm_orig), "GetTextMetricsA failed\n");
 162     ok(GetTextExtentPoint32A(hdc, test_str, sizeof(test_str), &size_orig), "GetTextExtentPoint32A failed\n");
 163     ok(GetCharWidthA(hdc, 'A', 'A', &width_orig), "GetCharWidthA failed\n");
 164     SelectObject(hdc, old_hfont);
 165     DeleteObject(hfont);
 166
 167     /* test fractional scaling */
 168     for (i = 1; i < height_orig; i++)
 169     {
 170         hfont = create_font("fractional", &bitmap_lf);
 171         test_font_metrics(hdc, hfont, test_str, sizeof(test_str), &tm_orig, &size_orig, width_orig, 1, 1);
 172         DeleteObject(hfont);
 173     }
 174
 175     /* test integer scaling 3x2 */
 176     bitmap_lf.lfHeight = height_orig * 2;
 177     bitmap_lf.lfWidth *= 3;
 178     hfont = create_font("3x2", &bitmap_lf);
 179 todo_wine
 180 {
 181     test_font_metrics(hdc, hfont, test_str, sizeof(test_str), &tm_orig, &size_orig, width_orig, 3, 2);
 182 }
 183     DeleteObject(hfont);
 184
 185     /* test integer scaling 3x3 */
 186     bitmap_lf.lfHeight = height_orig * 3;
 187     bitmap_lf.lfWidth = 0;
 188     hfont = create_font("3x3", &bitmap_lf);
 189
 190 todo_wine
 191 {
 192     test_font_metrics(hdc, hfont, test_str, sizeof(test_str), &tm_orig, &size_orig, width_orig, 3, 3);
 193 }
 194     DeleteObject(hfont);
 195
 196     ReleaseDC(0, hdc);
 197 }
 198
 199 static INT CALLBACK find_font_proc(const LOGFONT *elf, const TEXTMETRIC *ntm, DWORD type, LPARAM lParam)
 200 {
 201     LOGFONT *lf = (LOGFONT *)lParam;
 202
 203     if (elf->lfHeight == lf->lfHeight && !strcmp(elf->lfFaceName, lf->lfFaceName))
 204     {
 205         *lf = *elf;
 206         return 0; /* stop enumeration */
 207     }
 208     return 1; /* continue enumeration */
 209 }
 210
 211 static void test_bitmap_font_metrics(void)
 212 {
 213     static const struct font_data
 214     {
 215         const char face_name[LF_FACESIZE];
 216         int weight, height, ascent, descent, int_leading, ext_leading;
 217         int ave_char_width, max_char_width;
 218     } fd[] =
 219     {
 220         { "MS Sans Serif", FW_NORMAL, 13, 11, 2, 2, 0, 5, 11 },
 221         { "MS Sans Serif", FW_NORMAL, 16, 13, 3, 3, 0, 7, 14 },
 222         { "MS Sans Serif", FW_NORMAL, 20, 16, 4, 4, 0, 8, 16 },
 223         { "MS Sans Serif", FW_NORMAL, 24, 19, 5, 6, 0, 9, 20 },
 224         { "MS Sans Serif", FW_NORMAL, 29, 23, 6, 5, 0, 12, 25 },
 225         { "MS Sans Serif", FW_NORMAL, 37, 29, 8, 5, 0, 16, 32 },
 226         { "MS Serif", FW_NORMAL, 10, 8, 2, 2, 0, 5, 8 },
 227         { "MS Serif", FW_NORMAL, 11, 9, 2, 2, 0, 5, 9 },
 228         { "MS Serif", FW_NORMAL, 13, 11, 2, 2, 0, 5, 12 },
 229         { "MS Serif", FW_NORMAL, 16, 13, 3, 3, 0, 6, 16 },
 230         { "MS Serif", FW_NORMAL, 19, 15, 4, 3, 0, 8, 19 },
 231         { "MS Serif", FW_NORMAL, 21, 16, 5, 3, 0, 9, 23 },
 232         { "MS Serif", FW_NORMAL, 27, 21, 6, 3, 0, 12, 27 },
 233         { "MS Serif", FW_NORMAL, 35, 27, 8, 3, 0, 16, 34 },
 234         { "Courier", FW_NORMAL, 13, 11, 2, 0, 0, 8, 8 },
 235         { "Courier", FW_NORMAL, 16, 13, 3, 0, 0, 9, 9 },
 236         { "Courier", FW_NORMAL, 20, 16, 4, 0, 0, 12, 12 },
 237         { "System", FW_BOLD, 16, 13, 3, 3, 0, 7, 15 },
 238         { "Small Fonts", FW_NORMAL, 3, 2, 1, 0, 0, 1, 2 },
 239         { "Small Fonts", FW_NORMAL, 5, 4, 1, 1, 0, 3, 4 },
 240         { "Small Fonts", FW_NORMAL, 6, 5, 1, 1, 0, 3, 13 },
 241         { "Small Fonts", FW_NORMAL, 8, 7, 1, 1, 0, 4, 7 },
 242         { "Small Fonts", FW_NORMAL, 10, 8, 2, 2, 0, 4, 8 },
 243         { "Small Fonts", FW_NORMAL, 11, 9, 2, 2, 0, 5, 9 }
 244         /* FIXME: add "Fixedsys", "Terminal" */
 245     };
 246     HDC hdc;
 247     LOGFONT lf;
 248     HFONT hfont, old_hfont;
 249     TEXTMETRIC tm;
 250     INT ret, i;
 251
 252     hdc = CreateCompatibleDC(0);
 253     assert(hdc);
 254
 255     for (i = 0; i < sizeof(fd)/sizeof(fd[0]); i++)
 256     {
 257         memset(&lf, 0, sizeof(lf));
 258
 259         lf.lfHeight = fd[i].height;
 260         strcpy(lf.lfFaceName, fd[i].face_name);
 261         ret = EnumFontFamilies(hdc, fd[i].face_name, find_font_proc, (LPARAM)&lf);
 262         if (ret)
 263         {
 264             trace("font %s height %d not found\n", fd[i].face_name, fd[i].height);
 265             continue;
 266         }
 267
 268         trace("found font %s, height %ld\n", lf.lfFaceName, lf.lfHeight);
 269
 270         hfont = create_font(lf.lfFaceName, &lf);
 271         old_hfont = SelectObject(hdc, hfont);
 272         ok(GetTextMetrics(hdc, &tm), "GetTextMetrics error %ld\n", GetLastError());
 273
 274         ok(tm.tmWeight == fd[i].weight, "%s(%d): tm.tmWeight %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmWeight, fd[i].weight);
 275         ok(tm.tmHeight == fd[i].height, "%s(%d): tm.tmHeight %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmHeight, fd[i].height);
 276         ok(tm.tmAscent == fd[i].ascent, "%s(%d): tm.tmAscent %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmAscent, fd[i].ascent);
 277         ok(tm.tmDescent == fd[i].descent, "%s(%d): tm.tmDescent %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmDescent, fd[i].descent);
 278         ok(tm.tmInternalLeading == fd[i].int_leading, "%s(%d): tm.tmInternalLeading %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmInternalLeading, fd[i].int_leading);
 279         ok(tm.tmExternalLeading == fd[i].ext_leading, "%s(%d): tm.tmExternalLeading %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmExternalLeading, fd[i].ext_leading);
 280         ok(tm.tmAveCharWidth == fd[i].ave_char_width, "%s(%d): tm.tmAveCharWidth %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmAveCharWidth, fd[i].ave_char_width);
 281         ok(tm.tmMaxCharWidth == fd[i].max_char_width, "%s(%d): tm.tmMaxCharWidth %ld != %d\n", fd[i].face_name, fd[i].height, tm.tmMaxCharWidth, fd[i].max_char_width);
 282
 283         SelectObject(hdc, old_hfont);
 284         DeleteObject(hfont);
 285     }
 286
 287     DeleteDC(hdc);
 288 }
 289
 290 static void test_GdiGetCharDimensions(void)
 291 {
 292     HDC hdc;
 293     TEXTMETRICW tm;
 294     LONG ret;
 295     SIZE size;
 296     LONG avgwidth, height;
 297     static const char szAlphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 298     typedef LONG (WINAPI *fnGdiGetCharDimensions)(HDC hdc, LPTEXTMETRICW lptm, LONG *height);
 299     fnGdiGetCharDimensions GdiGetCharDimensions = (fnGdiGetCharDimensions)GetProcAddress(LoadLibrary("gdi32"), "GdiGetCharDimensions");
 300     if (!GdiGetCharDimensions) return;
 301
 302     hdc = CreateCompatibleDC(NULL);
 303
 304     GetTextExtentPoint(hdc, szAlphabet, strlen(szAlphabet), &size);
 305     avgwidth = ((size.cx / 26) + 1) / 2;
 306
 307     ret = GdiGetCharDimensions(hdc, &tm, &height);
 308     ok(ret == avgwidth, "GdiGetCharDimensions should have returned width of %ld instead of %ld\n", avgwidth, ret);
 309     ok(height == tm.tmHeight, "GdiGetCharDimensions should have set height to %ld instead of %ld\n", tm.tmHeight, height);
 310
 311     ret = GdiGetCharDimensions(hdc, &tm, NULL);
 312     ok(ret == avgwidth, "GdiGetCharDimensions should have returned width of %ld instead of %ld\n", avgwidth, ret);
 313
 314     ret = GdiGetCharDimensions(hdc, NULL, NULL);
 315     ok(ret == avgwidth, "GdiGetCharDimensions should have returned width of %ld instead of %ld\n", avgwidth, ret);
 316
 317     height = 0;
 318     ret = GdiGetCharDimensions(hdc, NULL, &height);
 319     ok(ret == avgwidth, "GdiGetCharDimensions should have returned width of %ld instead of %ld\n", avgwidth, ret);
 320     ok(height == size.cy, "GdiGetCharDimensions should have set height to %ld instead of %ld\n", size.cy, height);
 321
 322     DeleteDC(hdc);
 323 }
 324
 325 static void test_GetCharABCWidthsW(void)
 326 {
 327     BOOL ret;
 328     ABC abc[1];
 329     typedef BOOL (WINAPI *fnGetCharABCWidthsW)(HDC hdc, UINT first, UINT last, LPABC abc);
 330     fnGetCharABCWidthsW GetCharABCWidthsW = (fnGetCharABCWidthsW)GetProcAddress(LoadLibrary("gdi32"), "GetCharABCWidthsW");
 331     if (!GetCharABCWidthsW) return;
 332
 333     ret = GetCharABCWidthsW(NULL, 'a', 'a', abc);
 334     ok(!ret, "GetCharABCWidthsW should have returned FALSE\n");
 335 }
 336
 337 static void test_text_extents(void)
 338 {
 339     LOGFONTA lf;
 340     TEXTMETRICA tm;
 341     HDC hdc;
 342     HFONT hfont;
 343     SIZE sz;
 344
 345     memset(&lf, 0, sizeof(lf));
 346     strcpy(lf.lfFaceName, "Arial");
 347     lf.lfHeight = 20;
 348
 349     hfont = CreateFontIndirectA(&lf);
 350     hdc = GetDC(0);
 351     hfont = SelectObject(hdc, hfont);
 352     GetTextMetricsA(hdc, &tm);
 353     GetTextExtentPointA(hdc, "o", 1, &sz);
 354     ok(sz.cy == tm.tmHeight, "cy %ld tmHeight %ld\n", sz.cy, tm.tmHeight);
 355
 356     SelectObject(hdc, hfont);
 357     DeleteObject(hfont);
 358     ReleaseDC(NULL, hdc);
 359 }
 360
 361 START_TEST(font)
 362 {
 363     test_logfont();
 364     test_bitmap_font();
 365     test_bitmap_font_metrics();
 366     test_GdiGetCharDimensions();
 367     test_GetCharABCWidthsW();
 368     test_text_extents();
 369 }