dlls/gdi32/tests/palette.c

   1 /*
   2  * Unit test suite for palettes
   3  *
   4  * Copyright 2005 Glenn Wurster
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "winuser.h"
  27 #include "mmsystem.h"
  28
  29 #include "wine/test.h"
  30
  31 static const PALETTEENTRY logpalettedata[8] = {
  32     { 0x10, 0x20, 0x30, PC_NOCOLLAPSE },
  33     { 0x20, 0x30, 0x40, PC_NOCOLLAPSE },
  34     { 0x30, 0x40, 0x50, PC_NOCOLLAPSE },
  35     { 0x40, 0x50, 0x60, PC_NOCOLLAPSE },
  36     { 0x50, 0x60, 0x70, PC_NOCOLLAPSE },
  37     { 0x60, 0x70, 0x80, PC_NOCOLLAPSE },
  38     { 0x70, 0x80, 0x90, PC_NOCOLLAPSE },
  39     { 0x80, 0x90, 0xA0, PC_NOCOLLAPSE },
  40 };
  41
  42 static void test_DIB_PAL_COLORS(void) {
  43     HDC hdc = GetDC( NULL );
  44     HDC memhdc = CreateCompatibleDC( hdc );
  45     HBITMAP hbmp, hbmpOld;
  46     char bmpbuf[sizeof(BITMAPINFO) + 10 * sizeof(WORD)];
  47     PBITMAPINFO bmp = (PBITMAPINFO)bmpbuf;
  48     WORD * bmpPalPtr;
  49     char logpalettebuf[sizeof(LOGPALETTE) + sizeof(logpalettedata)];
  50     PLOGPALETTE logpalette = (PLOGPALETTE)logpalettebuf;
  51     HPALETTE hpal, hpalOld;
  52     COLORREF setColor, chkColor, getColor;
  53     int i;
  54
  55     /* Initialize the logical palette with a few colours */
  56     logpalette->palVersion = 0x300;
  57     logpalette->palNumEntries = 8;
  58     memcpy( logpalette->palPalEntry, logpalettedata, sizeof(logpalettedata) );
  59     hpal = CreatePalette( logpalette );
  60     hpalOld = SelectPalette( memhdc, hpal, FALSE );
  61     ok( hpalOld != NULL, "error=%d\n", GetLastError() );
  62
  63     /* Create a DIB BMP which references colours in the logical palette */
  64     memset( bmp, 0x00, sizeof(BITMAPINFO) );
  65     bmp->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
  66     bmp->bmiHeader.biWidth = 1;
  67     bmp->bmiHeader.biHeight = 1;
  68     bmp->bmiHeader.biPlanes = 1;
  69     bmp->bmiHeader.biBitCount = 8;
  70     bmp->bmiHeader.biCompression = BI_RGB;
  71     bmp->bmiHeader.biClrUsed = 10;
  72     bmp->bmiHeader.biClrImportant = 0;
  73     bmpPalPtr = (WORD *)&bmp->bmiColors;
  74     for( i = 0; i < 8; i++ ) {
  75         *bmpPalPtr++ = i;
  76     }
  77     *bmpPalPtr++ = 8; /* Pointer to logical palette index just outside range */
  78     *bmpPalPtr++ = 19; /* Pointer to bad logical palette index */
  79
  80     hbmp = CreateDIBSection( memhdc, bmp, DIB_PAL_COLORS, 0, 0, 0 );
  81     ok( hbmp != NULL, "error=%d\n", GetLastError() );
  82     hbmpOld = SelectObject( memhdc, hbmp );
  83     ok( hbmpOld != NULL, "error=%d\n", GetLastError() );
  84
  85     /* Test with a RGB to DIB_PAL_COLORS */
  86     setColor = RGB( logpalettedata[1].peRed, logpalettedata[1].peGreen, logpalettedata[1].peBlue );
  87     SetPixel( memhdc, 0, 0, setColor );
  88     chkColor = RGB( logpalettedata[1].peRed, logpalettedata[1].peGreen, logpalettedata[1].peBlue );
  89     getColor = GetPixel( memhdc, 0, 0 );
  90     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
  91
  92     /* Test with a valid DIBINDEX to DIB_PAL_COLORS */
  93     setColor = DIBINDEX( 2 );
  94     SetPixel( memhdc, 0, 0, setColor );
  95     chkColor = RGB( logpalettedata[2].peRed, logpalettedata[2].peGreen, logpalettedata[2].peBlue );
  96     getColor = GetPixel( memhdc, 0, 0 );
  97     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
  98
  99     /* Test with a invalid DIBINDEX to DIB_PAL_COLORS */
 100     setColor = DIBINDEX( 12 );
 101     SetPixel( memhdc, 0, 0, setColor );
 102     chkColor = RGB( 0, 0, 0 );
 103     getColor = GetPixel( memhdc, 0, 0 );
 104     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
 105
 106     /* Test for double wraparound on logical palette references from */
 107     /* DIBINDEX by DIB_PAL_COLORS. */
 108     setColor = DIBINDEX( 9 );
 109     SetPixel( memhdc, 0, 0, setColor );
 110     chkColor = RGB( logpalettedata[3].peRed, logpalettedata[3].peGreen, logpalettedata[3].peBlue );
 111     getColor = GetPixel( memhdc, 0, 0 );
 112     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
 113
 114     SelectPalette( memhdc, hpalOld, FALSE );
 115     DeleteObject( hpal );
 116     SelectObject( memhdc, hbmpOld );
 117     DeleteObject( hbmp );
 118     DeleteDC( memhdc );
 119     ReleaseDC( NULL, hdc );
 120 }
 121
 122 static void test_palette_entries(void)
 123 {
 124     char logpalettebuf[sizeof(LOGPALETTE) + sizeof(logpalettedata)];
 125     PLOGPALETTE logpalette = (PLOGPALETTE)logpalettebuf;
 126     HPALETTE hpal;
 127     UINT res=0;
 128     PALETTEENTRY palEntry = { 0x1, 0x2, 0x3, 0xff };
 129     PALETTEENTRY getEntryResult;
 130
 131     /* Initialize the logical palette with a few colours */
 132     logpalette->palVersion = 0x300;
 133     logpalette->palNumEntries = 8;
 134     memcpy( logpalette->palPalEntry, logpalettedata, sizeof(logpalettedata) );
 135     hpal = CreatePalette( logpalette );
 136
 137     /* Set a new entry with peFlags to 0xff */
 138     SetPaletteEntries(hpal, 0, 1, &palEntry);
 139
 140     /* Retrieve the entry to see if GDI32 performs any filtering on peFlags */
 141     res = GetPaletteEntries(hpal, 0, 1, &getEntryResult);
 142     ok(res == 1, "GetPaletteEntries should have returned 1 but returned %d\n", res);
 143
 144     ok( palEntry.peFlags == getEntryResult.peFlags, "palEntry.peFlags (%#x) != getEntryResult.peFlags (%#x)\n", palEntry.peFlags, getEntryResult.peFlags );
 145 }
 146
 147 static void test_halftone_palette(void)
 148 {
 149     HDC hdc;
 150     HPALETTE pal;
 151     PALETTEENTRY entries[256];
 152     PALETTEENTRY defpal[20];
 153     int i, count;
 154
 155     hdc = GetDC(0);
 156
 157     count = GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, 20, defpal );
 158     ok( count == 20, "wrong size %u\n", count );
 159
 160     pal = CreateHalftonePalette( hdc );
 161     count = GetPaletteEntries( pal, 0, 256, entries );
 162     ok( count == 256 || broken(count == 20), /* nt 4 */
 163         "wrong size %u\n", count );
 164
 165     /* first and last 10 match the default palette */
 166     for (i = 0; i < 10; i++)
 167         ok( entries[i].peRed   == defpal[i].peRed &&
 168             entries[i].peGreen == defpal[i].peGreen &&
 169             entries[i].peBlue  == defpal[i].peBlue &&
 170             !entries[i].peFlags,
 171             "%u: wrong color %02x,%02x,%02x,%02x\n", i,
 172             entries[i].peRed, entries[i].peGreen, entries[i].peBlue, entries[i].peFlags );
 173     for (i = count - 10; i < count; i++)
 174         ok( entries[i].peRed   == defpal[i - count + 20].peRed &&
 175             entries[i].peGreen == defpal[i - count + 20].peGreen &&
 176             entries[i].peBlue  == defpal[i - count + 20].peBlue &&
 177             !entries[i].peFlags,
 178             "%u: wrong color %02x,%02x,%02x,%02x\n", i,
 179             entries[i].peRed, entries[i].peGreen, entries[i].peBlue, entries[i].peFlags );
 180
 181     DeleteObject( pal );
 182     ReleaseDC( 0, hdc );
 183 }
 184
 185 START_TEST(palette)
 186 {
 187     test_DIB_PAL_COLORS();
 188     test_palette_entries();
 189     test_halftone_palette();
 190 }