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reactos/win32ss/drivers/displays/framebuf_new/pointer.c

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/*
* PROJECT: ReactOS Framebuffer Display Driver
* LICENSE: Microsoft NT4 DDK Sample Code License
* FILE: win32ss/drivers/displays/framebuf_new/pointer.c
* PURPOSE: Hardware Pointer Support
* PROGRAMMERS: Copyright (c) 1992-1995 Microsoft Corporation
*/
#include "driver.h"
BOOL NTAPI bCopyColorPointer(
PPDEV ppdev,
SURFOBJ *psoMask,
SURFOBJ *psoColor,
XLATEOBJ *pxlo);
BOOL NTAPI bCopyMonoPointer(
PPDEV ppdev,
SURFOBJ *psoMask);
BOOL NTAPI bSetHardwarePointerShape(
SURFOBJ *pso,
SURFOBJ *psoMask,
SURFOBJ *psoColor,
XLATEOBJ *pxlo,
LONG x,
LONG y,
FLONG fl);
/******************************Public*Routine******************************\
* DrvMovePointer
*
* Moves the hardware pointer to a new position.
*
\**************************************************************************/
VOID NTAPI DrvMovePointer
(
SURFOBJ *pso,
LONG x,
LONG y,
RECTL *prcl
)
{
PPDEV ppdev = (PPDEV) pso->dhpdev;
DWORD returnedDataLength;
VIDEO_POINTER_POSITION NewPointerPosition;
// We don't use the exclusion rectangle because we only support
// hardware Pointers. If we were doing our own Pointer simulations
// we would want to update prcl so that the engine would call us
// to exclude out pointer before drawing to the pixels in prcl.
UNREFERENCED_PARAMETER(prcl);
if (x == -1)
{
//
// A new position of (-1,-1) means hide the pointer.
//
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_DISABLE_POINTER,
NULL,
0,
NULL,
0,
&returnedDataLength))
{
//
// Not the end of the world, print warning in checked build.
//
DISPDBG((1, "DISP vMoveHardwarePointer failed IOCTL_VIDEO_DISABLE_POINTER\n"));
}
}
else
{
NewPointerPosition.Column = (SHORT) x - (SHORT) (ppdev->ptlHotSpot.x);
NewPointerPosition.Row = (SHORT) y - (SHORT) (ppdev->ptlHotSpot.y);
//
// Call miniport driver to move Pointer.
//
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_SET_POINTER_POSITION,
&NewPointerPosition,
sizeof(VIDEO_POINTER_POSITION),
NULL,
0,
&returnedDataLength))
{
//
// Not the end of the world, print warning in checked build.
//
DISPDBG((1, "DISP vMoveHardwarePointer failed IOCTL_VIDEO_SET_POINTER_POSITION\n"));
}
}
}
/******************************Public*Routine******************************\
* DrvSetPointerShape
*
* Sets the new pointer shape.
*
\**************************************************************************/
ULONG NTAPI DrvSetPointerShape
(
SURFOBJ *pso,
SURFOBJ *psoMask,
SURFOBJ *psoColor,
XLATEOBJ *pxlo,
LONG xHot,
LONG yHot,
LONG x,
LONG y,
RECTL *prcl,
FLONG fl
)
{
PPDEV ppdev = (PPDEV) pso->dhpdev;
DWORD returnedDataLength;
// We don't use the exclusion rectangle because we only support
// hardware Pointers. If we were doing our own Pointer simulations
// we would want to update prcl so that the engine would call us
// to exclude out pointer before drawing to the pixels in prcl.
UNREFERENCED_PARAMETER(prcl);
if (ppdev->pPointerAttributes == (PVIDEO_POINTER_ATTRIBUTES) NULL)
{
// Mini-port has no hardware Pointer support.
return(SPS_ERROR);
}
// See if we are being asked to hide the pointer
if (psoMask == (SURFOBJ *) NULL)
{
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_DISABLE_POINTER,
NULL,
0,
NULL,
0,
&returnedDataLength))
{
//
// It should never be possible to fail.
// Message supplied for debugging.
//
DISPDBG((1, "DISP bSetHardwarePointerShape failed IOCTL_VIDEO_DISABLE_POINTER\n"));
}
return(TRUE);
}
ppdev->ptlHotSpot.x = xHot;
ppdev->ptlHotSpot.y = yHot;
if (!bSetHardwarePointerShape(pso,psoMask,psoColor,pxlo,x,y,fl))
{
if (ppdev->fHwCursorActive) {
ppdev->fHwCursorActive = FALSE;
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_DISABLE_POINTER,
NULL,
0,
NULL,
0,
&returnedDataLength)) {
DISPDBG((1, "DISP bSetHardwarePointerShape failed IOCTL_VIDEO_DISABLE_POINTER\n"));
}
}
//
// Mini-port declines to realize this Pointer
//
return(SPS_DECLINE);
}
else
{
ppdev->fHwCursorActive = TRUE;
}
return(SPS_ACCEPT_NOEXCLUDE);
}
/******************************Public*Routine******************************\
* bSetHardwarePointerShape
*
* Changes the shape of the Hardware Pointer.
*
* Returns: True if successful, False if Pointer shape can't be hardware.
*
\**************************************************************************/
BOOL NTAPI bSetHardwarePointerShape(
SURFOBJ *pso,
SURFOBJ *psoMask,
SURFOBJ *psoColor,
XLATEOBJ *pxlo,
LONG x,
LONG y,
FLONG fl)
{
PPDEV ppdev = (PPDEV) pso->dhpdev;
PVIDEO_POINTER_ATTRIBUTES pPointerAttributes = ppdev->pPointerAttributes;
DWORD returnedDataLength;
if (psoColor != (SURFOBJ *) NULL)
{
if ((ppdev->PointerCapabilities.Flags & VIDEO_MODE_COLOR_POINTER) &&
bCopyColorPointer(ppdev, psoMask, psoColor, pxlo))
{
pPointerAttributes->Flags |= VIDEO_MODE_COLOR_POINTER;
} else {
return(FALSE);
}
} else {
if ((ppdev->PointerCapabilities.Flags & VIDEO_MODE_MONO_POINTER) &&
bCopyMonoPointer(ppdev, psoMask))
{
pPointerAttributes->Flags |= VIDEO_MODE_MONO_POINTER;
} else {
return(FALSE);
}
}
//
// Initialize Pointer attributes and position
//
pPointerAttributes->Enable = 1;
//
// if x,y = -1,-1 then pass them directly to the miniport so that
// the cursor will be disabled
pPointerAttributes->Column = (SHORT)(x);
pPointerAttributes->Row = (SHORT)(y);
if ((x != -1) || (y != -1)) {
pPointerAttributes->Column -= (SHORT)(ppdev->ptlHotSpot.x);
pPointerAttributes->Row -= (SHORT)(ppdev->ptlHotSpot.y);
}
//
// set animate flags
//
if (fl & SPS_ANIMATESTART) {
pPointerAttributes->Flags |= VIDEO_MODE_ANIMATE_START;
} else if (fl & SPS_ANIMATEUPDATE) {
pPointerAttributes->Flags |= VIDEO_MODE_ANIMATE_UPDATE;
}
//
// Set the new Pointer shape.
//
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_SET_POINTER_ATTR,
pPointerAttributes,
ppdev->cjPointerAttributes,
NULL,
0,
&returnedDataLength)) {
DISPDBG((1, "DISP:Failed IOCTL_VIDEO_SET_POINTER_ATTR call\n"));
return(FALSE);
}
return(TRUE);
}
/******************************Public*Routine******************************\
* bCopyMonoPointer
*
* Copies two monochrome masks into a buffer of the maximum size handled by the
* miniport, with any extra bits set to 0. The masks are converted to topdown
* form if they aren't already. Returns TRUE if we can handle this pointer in
* hardware, FALSE if not.
*
\**************************************************************************/
BOOL NTAPI bCopyMonoPointer(
PPDEV ppdev,
SURFOBJ *pso)
{
ULONG cy;
PBYTE pjSrcAnd, pjSrcXor;
LONG lDeltaSrc, lDeltaDst;
LONG lSrcWidthInBytes;
ULONG cxSrc = pso->sizlBitmap.cx;
ULONG cySrc = pso->sizlBitmap.cy;
ULONG cxSrcBytes;
PVIDEO_POINTER_ATTRIBUTES pPointerAttributes = ppdev->pPointerAttributes;
PBYTE pjDstAnd = pPointerAttributes->Pixels;
PBYTE pjDstXor = pPointerAttributes->Pixels;
// Make sure the new pointer isn't too big to handle
// (*2 because both masks are in there)
if ((cxSrc > ppdev->PointerCapabilities.MaxWidth) ||
(cySrc > (ppdev->PointerCapabilities.MaxHeight * 2)))
{
return(FALSE);
}
pjDstXor += ((ppdev->PointerCapabilities.MaxWidth + 7) / 8) *
ppdev->pPointerAttributes->Height;
// set the desk and mask to 0xff
RtlFillMemory(pjDstAnd, ppdev->pPointerAttributes->WidthInBytes *
ppdev->pPointerAttributes->Height, 0xFF);
// Zero the dest XOR mask
RtlZeroMemory(pjDstXor, ppdev->pPointerAttributes->WidthInBytes *
ppdev->pPointerAttributes->Height);
cxSrcBytes = (cxSrc + 7) / 8;
if ((lDeltaSrc = pso->lDelta) < 0)
{
lSrcWidthInBytes = -lDeltaSrc;
} else {
lSrcWidthInBytes = lDeltaSrc;
}
pjSrcAnd = (PBYTE) pso->pvBits;
// If the incoming pointer bitmap is bottomup, we'll flip it to topdown to
// save the miniport some work
if (!(pso->fjBitmap & BMF_TOPDOWN))
{
// Copy from the bottom
pjSrcAnd += lSrcWidthInBytes * (cySrc - 1);
}
// Height of just AND mask
cySrc = cySrc / 2;
// Point to XOR mask
pjSrcXor = pjSrcAnd + (cySrc * lDeltaSrc);
// Offset from end of one dest scan to start of next
lDeltaDst = ppdev->pPointerAttributes->WidthInBytes;
for (cy = 0; cy < cySrc; ++cy)
{
RtlCopyMemory(pjDstAnd, pjSrcAnd, cxSrcBytes);
RtlCopyMemory(pjDstXor, pjSrcXor, cxSrcBytes);
// Point to next source and dest scans
pjSrcAnd += lDeltaSrc;
pjSrcXor += lDeltaSrc;
pjDstAnd += lDeltaDst;
pjDstXor += lDeltaDst;
}
return(TRUE);
}
/******************************Public*Routine******************************\
* bCopyColorPointer
*
* Copies the mono and color masks into the buffer of maximum size
* handled by the miniport with any extra bits set to 0. Color translation
* is handled at this time. The masks are converted to topdown form if they
* aren't already. Returns TRUE if we can handle this pointer in hardware,
* FALSE if not.
*
\**************************************************************************/
BOOL NTAPI bCopyColorPointer(
PPDEV ppdev,
SURFOBJ *psoMask,
SURFOBJ *psoColor,
XLATEOBJ *pxlo)
{
return(FALSE);
}
/******************************Public*Routine******************************\
* bInitPointer
*
* Initialize the Pointer attributes.
*
\**************************************************************************/
BOOL NTAPI bInitPointer(PPDEV ppdev, DEVINFO *pdevinfo)
{
DWORD returnedDataLength;
ppdev->pPointerAttributes = (PVIDEO_POINTER_ATTRIBUTES) NULL;
ppdev->cjPointerAttributes = 0; // initialized in screen.c
//
// Ask the miniport whether it provides pointer support.
//
if (EngDeviceIoControl(ppdev->hDriver,
IOCTL_VIDEO_QUERY_POINTER_CAPABILITIES,
NULL,
0,
&ppdev->PointerCapabilities,
sizeof(ppdev->PointerCapabilities),
&returnedDataLength))
{
return(FALSE);
}
//
// If neither mono nor color hardware pointer is supported, there's no
// hardware pointer support and we're done.
//
if ((!(ppdev->PointerCapabilities.Flags & VIDEO_MODE_MONO_POINTER)) &&
(!(ppdev->PointerCapabilities.Flags & VIDEO_MODE_COLOR_POINTER)))
{
return(TRUE);
}
//
// Note: The buffer itself is allocated after we set the
// mode. At that time we know the pixel depth and we can
// allocate the correct size for the color pointer if supported.
//
//
// Set the asynchronous support status (async means miniport is capable of
// drawing the Pointer at any time, with no interference with any ongoing
// drawing operation)
//
if (ppdev->PointerCapabilities.Flags & VIDEO_MODE_ASYNC_POINTER)
{
pdevinfo->flGraphicsCaps |= GCAPS_ASYNCMOVE;
}
else
{
pdevinfo->flGraphicsCaps &= ~GCAPS_ASYNCMOVE;
}
return(TRUE);
}
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