reactos/win32ss/drivers/displays/framebuf/palette.c

200 lines
5.2 KiB
C
Raw Normal View History

/*
* ReactOS Generic Framebuffer display driver
*
* Copyright (C) 2004 Filip Navara
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "framebuf.h"
/*
* Standard color that must be in palette, because they're used for
* drawing window borders and other GUI elements.
*/
const PALETTEENTRY BASEPALETTE[20] =
{
{ 0x00, 0x00, 0x00, 0x00 },
{ 0x80, 0x00, 0x00, 0x00 },
{ 0x00, 0x80, 0x00, 0x00 },
{ 0x80, 0x80, 0x00, 0x00 },
{ 0x00, 0x00, 0x80, 0x00 },
{ 0x80, 0x00, 0x80, 0x00 },
{ 0x00, 0x80, 0x80, 0x00 },
{ 0xC0, 0xC0, 0xC0, 0x00 },
{ 0xC0, 0xDC, 0xC0, 0x00 },
{ 0xD4, 0xD0, 0xC8, 0x00 },
{ 0xFF, 0xFB, 0xF0, 0x00 },
{ 0x3A, 0x6E, 0xA5, 0x00 },
{ 0x80, 0x80, 0x80, 0x00 },
{ 0xFF, 0x00, 0x00, 0x00 },
{ 0x00, 0xFF, 0x00, 0x00 },
{ 0xFF, 0xFF, 0x00, 0x00 },
{ 0x00, 0x00, 0xFF, 0x00 },
{ 0xFF, 0x00, 0xFF, 0x00 },
{ 0x00, 0xFF, 0xFF, 0x00 },
{ 0xFF, 0xFF, 0xFF, 0x00 },
};
/*
* IntInitDefaultPalette
*
* Initializes default palette for PDEV and fill it with the colors specified
* by the GDI standard.
*/
BOOL
IntInitDefaultPalette(
PPDEV ppdev,
PDEVINFO pDevInfo)
{
ULONG ColorLoop;
PPALETTEENTRY PaletteEntryPtr;
if (ppdev->BitsPerPixel > 8)
{
ppdev->DefaultPalette = pDevInfo->hpalDefault =
EngCreatePalette(PAL_BITFIELDS, 0, NULL,
ppdev->RedMask, ppdev->GreenMask, ppdev->BlueMask);
}
else
{
ppdev->PaletteEntries = EngAllocMem(0, sizeof(PALETTEENTRY) << 8, ALLOC_TAG);
if (ppdev->PaletteEntries == NULL)
{
return FALSE;
}
for (ColorLoop = 256, PaletteEntryPtr = ppdev->PaletteEntries;
ColorLoop != 0;
ColorLoop--, PaletteEntryPtr++)
{
PaletteEntryPtr->peRed = ((ColorLoop >> 5) & 7) * 255 / 7;
PaletteEntryPtr->peGreen = ((ColorLoop >> 3) & 3) * 255 / 3;
PaletteEntryPtr->peBlue = (ColorLoop & 7) * 255 / 7;
PaletteEntryPtr->peFlags = 0;
}
memcpy(ppdev->PaletteEntries, BASEPALETTE, 10 * sizeof(PALETTEENTRY));
memcpy(ppdev->PaletteEntries + 246, BASEPALETTE + 10, 10 * sizeof(PALETTEENTRY));
ppdev->DefaultPalette = pDevInfo->hpalDefault =
EngCreatePalette(PAL_INDEXED, 256, (PULONG)ppdev->PaletteEntries, 0, 0, 0);
}
return ppdev->DefaultPalette != NULL;
}
/*
* IntSetPalette
*
* Requests that the driver realize the palette for a specified device. The
* driver sets the hardware palette to match the entries in the given palette
* as closely as possible.
*/
BOOL APIENTRY
IntSetPalette(
IN DHPDEV dhpdev,
IN PPALETTEENTRY ppalent,
IN ULONG iStart,
IN ULONG cColors)
{
PVIDEO_CLUT pClut;
ULONG ClutSize;
ClutSize = sizeof(VIDEO_CLUT) + (cColors * sizeof(ULONG));
pClut = EngAllocMem(0, ClutSize, ALLOC_TAG);
pClut->FirstEntry = iStart;
pClut->NumEntries = cColors;
memcpy(&pClut->LookupTable[0].RgbLong, ppalent, sizeof(ULONG) * cColors);
if (((PPDEV)dhpdev)->PaletteShift)
{
while (cColors--)
{
pClut->LookupTable[cColors].RgbArray.Red >>= ((PPDEV)dhpdev)->PaletteShift;
pClut->LookupTable[cColors].RgbArray.Green >>= ((PPDEV)dhpdev)->PaletteShift;
pClut->LookupTable[cColors].RgbArray.Blue >>= ((PPDEV)dhpdev)->PaletteShift;
pClut->LookupTable[cColors].RgbArray.Unused = 0;
}
}
else
{
while (cColors--)
{
pClut->LookupTable[cColors].RgbArray.Unused = 0;
}
}
/*
* Set the palette registers.
*/
if (EngDeviceIoControl(((PPDEV)dhpdev)->hDriver, IOCTL_VIDEO_SET_COLOR_REGISTERS,
pClut, ClutSize, NULL, 0, &cColors))
{
EngFreeMem(pClut);
return FALSE;
}
EngFreeMem(pClut);
return TRUE;
}
/*
* DrvSetPalette
*
* Requests that the driver realize the palette for a specified device. The
* driver sets the hardware palette to match the entries in the given palette
* as closely as possible.
*
* Status
* @implemented
*/
BOOL APIENTRY
DrvSetPalette(
IN DHPDEV dhpdev,
IN PALOBJ *ppalo,
IN FLONG fl,
IN ULONG iStart,
IN ULONG cColors)
{
PPALETTEENTRY PaletteEntries;
BOOL bRet;
if (cColors == 0)
return FALSE;
PaletteEntries = EngAllocMem(0, cColors * sizeof(ULONG), ALLOC_TAG);
if (PaletteEntries == NULL)
{
return FALSE;
}
if (PALOBJ_cGetColors(ppalo, iStart, cColors, (PULONG)PaletteEntries) !=
cColors)
{
EngFreeMem(PaletteEntries);
return FALSE;
}
bRet = IntSetPalette(dhpdev, PaletteEntries, iStart, cColors);
EngFreeMem(PaletteEntries);
return bRet;
}