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 #include <assert.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "mmsystem.h"
  29
  30 #include "wine/test.h"
  31
  32 static const PALETTEENTRY logpalettedata[8] = {
  33     { 0x10, 0x20, 0x30, PC_NOCOLLAPSE },
  34     { 0x20, 0x30, 0x40, PC_NOCOLLAPSE },
  35     { 0x30, 0x40, 0x50, PC_NOCOLLAPSE },
  36     { 0x40, 0x50, 0x60, PC_NOCOLLAPSE },
  37     { 0x50, 0x60, 0x70, PC_NOCOLLAPSE },
  38     { 0x60, 0x70, 0x80, PC_NOCOLLAPSE },
  39     { 0x70, 0x80, 0x90, PC_NOCOLLAPSE },
  40     { 0x80, 0x90, 0xA0, PC_NOCOLLAPSE },
  41 };
  42
  43 static void test_DIB_PAL_COLORS(void) {
  44     HDC hdc = GetDC( NULL );
  45     HDC memhdc = CreateCompatibleDC( hdc );
  46     HBITMAP hbmp, hbmpOld;
  47     char bmpbuf[sizeof(BITMAPINFO) + 10 * sizeof(WORD)];
  48     PBITMAPINFO bmp = (PBITMAPINFO)bmpbuf;
  49     WORD * bmpPalPtr;
  50     char logpalettebuf[sizeof(LOGPALETTE) + sizeof(logpalettedata)];
  51     PLOGPALETTE logpalette = (PLOGPALETTE)logpalettebuf;
  52     HPALETTE hpal, hpalOld;
  53     COLORREF setColor, chkColor, getColor;
  54     int i;
  55
  56     /* Initalize the logical palette with a few colours */
  57     logpalette->palVersion = 0x300;
  58     logpalette->palNumEntries = 8;
  59     memcpy( logpalette->palPalEntry, logpalettedata, sizeof(logpalettedata) );
  60     hpal = CreatePalette( logpalette );
  61     hpalOld = SelectPalette( memhdc, hpal, FALSE );
  62     ok( hpalOld != NULL, "error=%d\n", GetLastError() );
  63
  64     /* Create a DIB BMP which references colours in the logical palette */
  65     memset( bmp, 0x00, sizeof(BITMAPINFO) );
  66     bmp->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
  67     bmp->bmiHeader.biWidth = 1;
  68     bmp->bmiHeader.biHeight = 1;
  69     bmp->bmiHeader.biPlanes = 1;
  70     bmp->bmiHeader.biBitCount = 8;
  71     bmp->bmiHeader.biCompression = BI_RGB;
  72     bmp->bmiHeader.biClrUsed = 10;
  73     bmp->bmiHeader.biClrImportant = 0;
  74     bmpPalPtr = (WORD *)&bmp->bmiColors;
  75     for( i = 0; i < 8; i++ ) {
  76         *bmpPalPtr++ = i;
  77     }
  78     *bmpPalPtr++ = 8; /* Pointer to logical palette index just outside range */
  79     *bmpPalPtr++ = 19; /* Pointer to bad logical palette index */
  80
  81     hbmp = CreateDIBSection( memhdc, bmp, DIB_PAL_COLORS, 0, 0, 0 );
  82     ok( hbmp != NULL, "error=%d\n", GetLastError() );
  83     hbmpOld = SelectObject( memhdc, hbmp );
  84     ok( hbmpOld != NULL, "error=%d\n", GetLastError() );
  85
  86     /* Test with a RGB to DIB_PAL_COLORS */
  87     setColor = RGB( logpalettedata[1].peRed, logpalettedata[1].peGreen, logpalettedata[1].peBlue );
  88     SetPixel( memhdc, 0, 0, setColor );
  89     chkColor = RGB( logpalettedata[1].peRed, logpalettedata[1].peGreen, logpalettedata[1].peBlue );
  90     getColor = GetPixel( memhdc, 0, 0 );
  91     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
  92
  93     /* Test with a valid DIBINDEX to DIB_PAL_COLORS */
  94     setColor = DIBINDEX( 2 );
  95     SetPixel( memhdc, 0, 0, setColor );
  96     chkColor = RGB( logpalettedata[2].peRed, logpalettedata[2].peGreen, logpalettedata[2].peBlue );
  97     getColor = GetPixel( memhdc, 0, 0 );
  98     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
  99
 100     /* Test with a invalid DIBINDEX to DIB_PAL_COLORS */
 101     setColor = DIBINDEX( 12 );
 102     SetPixel( memhdc, 0, 0, setColor );
 103     chkColor = RGB( 0, 0, 0 );
 104     getColor = GetPixel( memhdc, 0, 0 );
 105     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
 106
 107     /* Test for double wraparound on logical palette references from */
 108     /* DIBINDEX by DIB_PAL_COLORS. */
 109     setColor = DIBINDEX( 9 );
 110     SetPixel( memhdc, 0, 0, setColor );
 111     chkColor = RGB( logpalettedata[3].peRed, logpalettedata[3].peGreen, logpalettedata[3].peBlue );
 112     getColor = GetPixel( memhdc, 0, 0 );
 113     ok( getColor == chkColor, "getColor=%08X\n", (UINT)getColor );
 114
 115     SelectPalette( memhdc, hpalOld, FALSE );
 116     DeleteObject( hpal );
 117     SelectObject( memhdc, hbmpOld );
 118     DeleteObject( hbmp );
 119     DeleteDC( memhdc );
 120     ReleaseDC( NULL, hdc );
 121 }
 122
 123 START_TEST(palette)
 124 {
 125     test_DIB_PAL_COLORS();
 126 }