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Added a test showing how GDI scales bitmap font metrics.

This commit is contained in:
Dmitry Timoshkov 2004-09-02 20:06:55 +00:00 committed by Alexandre Julliard
parent 26e6168440
commit 3aab64dee5
1 changed files with 134 additions and 0 deletions
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134
dlls/gdi/tests/gdiobj.c
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@ -2,6 +2,7 @@
* Unit test suite for GDI objects
*
* Copyright 2002 Mike McCormack
* Copyright 2004 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -72,7 +73,140 @@ static void test_logfont(void)
DeleteObject(hfont);
}
static INT CALLBACK font_enum_proc(const LOGFONT *elf, const TEXTMETRIC *ntm, DWORD type, LPARAM lParam)
{
if (type & RASTER_FONTTYPE)
{
LOGFONT *lf = (LOGFONT *)lParam;
*lf = *elf;
return 0; /* stop enumeration */
}
return 1; /* continue enumeration */
}
static void test_font_metrics(HDC hdc, HFONT hfont, const char *test_str,
INT test_str_len, const TEXTMETRICA *tm_orig,
const SIZE *size_orig, INT width_orig,
INT scale_x, INT scale_y)
{
HFONT old_hfont;
TEXTMETRICA tm;
SIZE size;
INT width;
old_hfont = SelectObject(hdc, hfont);
GetTextMetricsA(hdc, &tm);
ok(tm.tmHeight == tm_orig->tmHeight * scale_y, "%ld != %ld\n", tm.tmHeight, tm_orig->tmHeight * scale_y);
ok(tm.tmAscent == tm_orig->tmAscent * scale_y, "%ld != %ld\n", tm.tmAscent, tm_orig->tmAscent * scale_y);
ok(tm.tmDescent == tm_orig->tmDescent * scale_y, "%ld != %ld\n", tm.tmDescent, tm_orig->tmDescent * scale_y);
ok(tm.tmAveCharWidth == tm_orig->tmAveCharWidth * scale_x, "%ld != %ld\n", tm.tmAveCharWidth, tm_orig->tmAveCharWidth * scale_x);
GetTextExtentPoint32A(hdc, test_str, test_str_len, &size);
ok(size.cx == size_orig->cx * scale_x, "%ld != %ld\n", size.cx, size_orig->cx * scale_x);
ok(size.cy == size_orig->cy * scale_y, "%ld != %ld\n", size.cy, size_orig->cy * scale_y);
GetCharWidthA(hdc, 'A', 'A', &width);
ok(width == width_orig * scale_x, "%d != %d\n", width, width_orig * scale_x);
SelectObject(hdc, old_hfont);
}
/* see whether GDI scales bitmap font metrics */
static void test_bitmap_font(void)
{
static const char test_str[11] = "Test String";
HDC hdc;
LOGFONTA bitmap_lf, lf;
HFONT hfont, old_hfont;
TEXTMETRICA tm_orig;
SIZE size_orig;
INT ret, i, width_orig, height_orig;
hdc = GetDC(0);
/* "System" has only 1 pixel size defined, otherwise the test breaks */
ret = EnumFontFamiliesA(hdc, "System", font_enum_proc, (LPARAM)&bitmap_lf);
if (ret)
{
ReleaseDC(0, hdc);
trace("no bitmap fonts were found, skipping the test\n");
return;
}
trace("found bitmap font %s, height %ld\n", bitmap_lf.lfFaceName, bitmap_lf.lfHeight);
height_orig = bitmap_lf.lfHeight;
hfont = CreateFontIndirectA(&bitmap_lf);
assert(hfont);
old_hfont = SelectObject(hdc, hfont);
ok(GetTextMetricsA(hdc, &tm_orig), "GetTextMetricsA failed\n");
ok(GetTextExtentPoint32A(hdc, test_str, sizeof(test_str), &size_orig), "GetTextExtentPoint32A failed\n");
ok(GetCharWidthA(hdc, 'A', 'A', &width_orig), "GetCharWidthA failed\n");
SelectObject(hdc, old_hfont);
DeleteObject(hfont);
/* test fractional scaling */
for (i = 1; i < height_orig; i++)
{
bitmap_lf.lfHeight = i;
hfont = CreateFontIndirectA(&bitmap_lf);
assert(hfont);
ret = GetObject(hfont, sizeof(lf), &lf);
ok(ret == sizeof(lf), "GetObject failed: %d\n", ret);
ok(!memcmp(&bitmap_lf, &lf, FIELD_OFFSET(LOGFONTA, lfFaceName)), "fonts don't match\n");
ok(!lstrcmpA(bitmap_lf.lfFaceName, lf.lfFaceName),
"font names don't match: %s != %s\n", bitmap_lf.lfFaceName, lf.lfFaceName);
test_font_metrics(hdc, hfont, test_str, sizeof(test_str), &tm_orig, &size_orig, width_orig, 1, 1);
DeleteObject(hfont);
}
/* test integer scaling 3x2 */
bitmap_lf.lfHeight = height_orig * 2;
bitmap_lf.lfWidth *= 3;
hfont = CreateFontIndirectA(&bitmap_lf);
assert(hfont);
ret = GetObject(hfont, sizeof(lf), &lf);
ok(ret == sizeof(lf), "GetObject failed: %d\n", ret);
ok(!memcmp(&bitmap_lf, &lf, FIELD_OFFSET(LOGFONTA, lfFaceName)), "fonts don't match\n");
ok(!lstrcmpA(bitmap_lf.lfFaceName, lf.lfFaceName),
"font names don't match: %s != %s\n", bitmap_lf.lfFaceName, lf.lfFaceName);
todo_wine
{
test_font_metrics(hdc, hfont, test_str, sizeof(test_str), &tm_orig, &size_orig, width_orig, 3, 2);
}
DeleteObject(hfont);
/* test integer scaling 3x3 */
bitmap_lf.lfHeight = height_orig * 3;
bitmap_lf.lfWidth = 0;
hfont = CreateFontIndirectA(&bitmap_lf);
assert(hfont);
ret = GetObject(hfont, sizeof(lf), &lf);
ok(ret == sizeof(lf), "GetObject failed: %d\n", ret);
ok(!memcmp(&bitmap_lf, &lf, FIELD_OFFSET(LOGFONTA, lfFaceName)), "fonts don't match\n");
ok(!lstrcmpA(bitmap_lf.lfFaceName, lf.lfFaceName),
"font names don't match: %s != %s\n", bitmap_lf.lfFaceName, lf.lfFaceName);
todo_wine
{
test_font_metrics(hdc, hfont, test_str, sizeof(test_str), &tm_orig, &size_orig, width_orig, 3, 3);
}
DeleteObject(hfont);
ReleaseDC(0, hdc);
}
START_TEST(gdiobj)
{
test_logfont();
test_bitmap_font();
}