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user32/tests: Add some tests for implicit stretch mode in CopyImage(). 

The values of the colored test result suggest that halftone filter is
used for shrinking: each pixel of output 2x2 image has the color value
averaged over 4 pixels from input 4x4 image.

Signed-off-by: Paul Gofman <gofmanp@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2018-12-28 23:15:16 +03:00 committed by Alexandre Julliard
parent 37bc868d78
commit 1bf418f0ff
1 changed files with 125 additions and 0 deletions
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125
dlls/user32/tests/cursoricon.c
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@ -2751,6 +2751,130 @@ static void test_monochrome_icon(void)
HeapFree(GetProcessHeap(), 0, icon_data);
}
static COLORREF get_color_from_bits(const unsigned char *bits, const BITMAPINFO *bmi,
unsigned int row, unsigned int column)
{
const BITMAPINFOHEADER *h = &bmi->bmiHeader;
const unsigned char *data;
unsigned int stride;
RGBQUAD color;
ok(h->biBitCount == 1 || h->biBitCount >= 24, "Unsupported bit count %u.\n", h->biBitCount);
stride = ((h->biBitCount * h->biWidth + 7) / 8 + 3) & ~3;
data = bits + row * stride + column * h->biBitCount / 8;
if (h->biBitCount >= 24)
return RGB(data[2], data[1], data[0]);
color = bmi->bmiColors[!!(data[0] & (1u << (7 - (column % 8))))];
return RGB(color.rgbRed, color.rgbGreen, color.rgbBlue);
}
static void test_CopyImage_StretchMode(void)
{
static const unsigned char test_bits_24[] =
{
0x00, 0xff, 0x00, 0x00, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0xff, 0x00,
0x00, 0xff, 0x00, 0xff, 0xff, 0x00, 0xff, 0xff, 0x00, 0x00, 0xff, 0x00,
0x00, 0xff, 0xff, 0x00, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0xff, 0x00,
0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0xff, 0x00, 0x00, 0xff, 0x00,
};
static const unsigned char expected_bits_24[] =
{
0x3f, 0xff, 0x00, 0x3f, 0xff, 0x3f, 0x00, 0x00,
0x3f, 0xff, 0x7f, 0x00, 0xff, 0x3f, 0x00, 0x00,
};
static const unsigned char test_bits_1[] =
{
0x30, 0x0, 0x0, 0x0,
0x30, 0x0, 0x0, 0x0,
0x40, 0x0, 0x0, 0x0,
0xc0, 0x0, 0x0, 0x0,
};
static const unsigned char expected_bits_1[] =
{
0x40, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0,
};
static const struct
{
LONG width, height, output_width, output_height;
WORD bit_count;
const unsigned char *test_bits, *expected_bits;
size_t test_bits_size, result_bits_size;
BOOL todo;
}
tests[] =
{
{4, 4, 2, 2, 24, test_bits_24, expected_bits_24,
sizeof(test_bits_24), sizeof(expected_bits_24), TRUE},
{4, 4, 2, 2, 1, test_bits_1, expected_bits_1,
sizeof(test_bits_1), sizeof(expected_bits_1), FALSE},
};
HBITMAP bitmap, bitmap_copy;
unsigned char *result_bits;
unsigned int row, column;
unsigned int test_index;
unsigned char *bits;
BITMAPINFO *bmi;
HDC hdc;
int ret;
bmi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi->bmiHeader.biPlanes = 1;
bmi->bmiHeader.biCompression = BI_RGB;
bmi->bmiColors[1].rgbRed = 0xff;
bmi->bmiColors[1].rgbGreen = 0xff;
bmi->bmiColors[1].rgbBlue = 0xff;
hdc = GetDC(NULL);
for (test_index = 0; test_index < ARRAY_SIZE(tests); ++test_index)
{
bmi->bmiHeader.biWidth = tests[test_index].width;
bmi->bmiHeader.biHeight = tests[test_index].height;
bmi->bmiHeader.biBitCount = tests[test_index].bit_count;
bitmap = CreateDIBSection(hdc, bmi, DIB_RGB_COLORS, (void **)&bits, NULL, 0);
ok(bitmap && bits, "CreateDIBSection() failed, result %u.\n", GetLastError());
memcpy(bits, tests[test_index].test_bits, tests[test_index].test_bits_size);
bitmap_copy = CopyImage(bitmap, IMAGE_BITMAP, tests[test_index].output_width,
tests[test_index].output_height, LR_CREATEDIBSECTION);
ok(!!bitmap_copy, "CopyImage() failed, result %u.\n", GetLastError());
result_bits = HeapAlloc(GetProcessHeap(), 0, tests[test_index].result_bits_size);
bmi->bmiHeader.biWidth = tests[test_index].output_width;
bmi->bmiHeader.biHeight = tests[test_index].output_height;
ret = GetDIBits(hdc, bitmap_copy, 0, tests[test_index].output_height,
result_bits, bmi, DIB_RGB_COLORS);
ok(ret == tests[test_index].output_height, "Unexpected GetDIBits result %d, GetLastError() %u.\n",
ret, GetLastError());
for (row = 0; row < tests[test_index].output_height; ++row)
for (column = 0; column < tests[test_index].output_width; ++column)
{
COLORREF result, expected;
result = get_color_from_bits(result_bits, bmi, row, column);
expected = get_color_from_bits(tests[test_index].expected_bits, bmi, row, column);
todo_wine_if(tests[test_index].todo)
ok(result == expected, "Colors do not match, "
"got 0x%06x, expected 0x%06x, test_index %u, row %u, column %u.\n",
result, expected, test_index, row, column);
}
DeleteObject(bitmap);
DeleteObject(bitmap_copy);
HeapFree(GetProcessHeap(), 0, result_bits);
}
ReleaseDC(0, hdc);
HeapFree(GetProcessHeap(), 0, bmi);
}
START_TEST(cursoricon)
{
pGetCursorInfo = (void *)GetProcAddress( GetModuleHandleA("user32.dll"), "GetCursorInfo" );
@ -2778,6 +2902,7 @@ START_TEST(cursoricon)
test_CopyImage_Bitmap(16);
test_CopyImage_Bitmap(24);
test_CopyImage_Bitmap(32);
test_CopyImage_StretchMode();
test_initial_cursor();
test_CreateIcon();
test_LoadImage();