/*
*Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
*
*Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
*"Software"), to deal in the Software without restriction, including
*without limitation the rights to use, copy, modify, merge, publish,
*distribute, sublicense, and/or sell copies of the Software, and to
*permit persons to whom the Software is furnished to do so, subject to
*the following conditions:
*
*The above copyright notice and this permission notice shall be
*included in all copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
*EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
*MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
*NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
*ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
*CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
*WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*Except as contained in this notice, the name of the XFree86 Project
*shall not be used in advertising or otherwise to promote the sale, use
*or other dealings in this Software without prior written authorization
*from the XFree86 Project.
*
* Authors: Dakshinamurthy Karra
* Suhaib M Siddiqi
* Peter Busch
* Harold L Hunt II
*/
#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include "win.h"
#include "winmsg.h"
#include <cursorstr.h>
#include <mipointrst.h>
#include <servermd.h>
extern Bool g_fSoftwareCursor;
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
#endif
#define BYTE_COUNT(x) (((x) + 7) / 8)
#define BRIGHTNESS(x) (x##Red * 0.299 + x##Green * 0.587 + x##Blue * 0.114)
#if 0
# define WIN_DEBUG_MSG winDebug
#else
# define WIN_DEBUG_MSG(...)
#endif
/*
* Local function prototypes
*/
static void
winPointerWarpCursor (ScreenPtr pScreen, int x, int y);
static Bool
winCursorOffScreen (ScreenPtr *ppScreen, int *x, int *y);
static void
winCrossScreen (ScreenPtr pScreen, Bool fEntering);
miPointerScreenFuncRec g_winPointerCursorFuncs =
{
winCursorOffScreen,
winCrossScreen,
winPointerWarpCursor
};
static void
winPointerWarpCursor (ScreenPtr pScreen, int x, int y)
{
winScreenPriv(pScreen);
RECT rcClient;
static Bool s_fInitialWarp = TRUE;
/* Discard first warp call */
if (s_fInitialWarp)
{
/* First warp moves mouse to center of window, just ignore it */
/* Don't ignore subsequent warps */
s_fInitialWarp = FALSE;
winErrorFVerb (2, "winPointerWarpCursor - Discarding first warp: %d %d\n",
x, y);
return;
}
/* Only update the Windows cursor position if we are active */
if (pScreenPriv->hwndScreen == GetForegroundWindow ())
{
/* Get the client area coordinates */
GetClientRect (pScreenPriv->hwndScreen, &rcClient);
/* Translate the client area coords to screen coords */
MapWindowPoints (pScreenPriv->hwndScreen,
HWND_DESKTOP,
(LPPOINT)&rcClient,
2);
/*
* Update the Windows cursor position so that we don't
* immediately warp back to the current position.
*/
SetCursorPos (rcClient.left + x, rcClient.top + y);
}
/* Call the mi warp procedure to do the actual warping in X. */
miPointerWarpCursor (pScreen, x, y);
}
static Bool
winCursorOffScreen (ScreenPtr *ppScreen, int *x, int *y)
{
return FALSE;
}
static void
winCrossScreen (ScreenPtr pScreen, Bool fEntering)
{
}
static unsigned char
reverse(unsigned char c)
{
int i;
unsigned char ret = 0;
for (i = 0; i < 8; ++i)
{
ret |= ((c >> i)&1) << (7 - i);
}
return ret;
}
/*
* Convert X cursor to Windows cursor
* FIXME: Perhaps there are more smart code
*/
static HCURSOR
winLoadCursor (ScreenPtr pScreen, CursorPtr pCursor, int screen)
{
winScreenPriv(pScreen);
HCURSOR hCursor = NULL;
unsigned char *pAnd;
unsigned char *pXor;
int nCX, nCY;
int nBytes;
double dForeY, dBackY;
BOOL fReverse;
HBITMAP hAnd, hXor;
ICONINFO ii;
unsigned char *pCur;
int x, y;
unsigned char bit;
HDC hDC;
BITMAPV4HEADER bi;
BITMAPINFO *pbmi;
unsigned long *lpBits;
WIN_DEBUG_MSG("winLoadCursor: Win32: %dx%d X11: %dx%d hotspot: %d,%d\n",
pScreenPriv->cursor.sm_cx, pScreenPriv->cursor.sm_cy,
pCursor->bits->width, pCursor->bits->height,
pCursor->bits->xhot, pCursor->bits->yhot
);
/* We can use only White and Black, so calc brightness of color
* Also check if the cursor is inverted */
dForeY = BRIGHTNESS(pCursor->fore);
dBackY = BRIGHTNESS(pCursor->back);
fReverse = dForeY < dBackY;
/* Check wether the X11 cursor is bigger than the win32 cursor */
if (pScreenPriv->cursor.sm_cx < pCursor->bits->width ||
pScreenPriv->cursor.sm_cy < pCursor->bits->height)
{
winErrorFVerb (2, "winLoadCursor - Windows requires %dx%d cursor\n"
"\tbut X requires %dx%d\n",
pScreenPriv->cursor.sm_cx, pScreenPriv->cursor.sm_cy,
pCursor->bits->width, pCursor->bits->height);
}
/* Get the number of bytes required to store the whole cursor image
* This is roughly (sm_cx * sm_cy) / 8
* round up to 8 pixel boundary so we can convert whole bytes */
nBytes = BYTE_COUNT(pScreenPriv->cursor.sm_cx) * pScreenPriv->cursor.sm_cy;
/* Get the effective width and height */
nCX = MIN(pScreenPriv->cursor.sm_cx, pCursor->bits->width);
nCY = MIN(pScreenPriv->cursor.sm_cy, pCursor->bits->height);
/* Allocate memory for the bitmaps */
pAnd = malloc (nBytes);
memset (pAnd, 0xFF, nBytes);
pXor = malloc (nBytes);
memset (pXor, 0x00, nBytes);
/* Convert the X11 bitmap to a win32 bitmap
* The first is for an empty mask */
if (pCursor->bits->emptyMask)
{
int x, y, xmax = BYTE_COUNT(nCX);
for (y = 0; y < nCY; ++y)
for (x = 0; x < xmax; ++x)
{
int nWinPix = BYTE_COUNT(pScreenPriv->cursor.sm_cx) * y + x;
int nXPix = BitmapBytePad(pCursor->bits->width) * y + x;
pAnd[nWinPix] = 0;
if (fReverse)
pXor[nWinPix] = reverse (~pCursor->bits->source[nXPix]);
else
pXor[nWinPix] = reverse (pCursor->bits->source[nXPix]);
}
}
else
{
int x, y, xmax = BYTE_COUNT(nCX);
for (y = 0; y < nCY; ++y)
for (x = 0; x < xmax; ++x)
{
int nWinPix = BYTE_COUNT(pScreenPriv->cursor.sm_cx) * y + x;
int nXPix = BitmapBytePad(pCursor->bits->width) * y + x;
unsigned char mask = pCursor->bits->mask[nXPix];
pAnd[nWinPix] = reverse (~mask);
if (fReverse)
pXor[nWinPix] = reverse (~pCursor->bits->source[nXPix] & mask);
else
pXor[nWinPix] = reverse (pCursor->bits->source[nXPix] & mask);
}
}
/* prepare the pointers */
hCursor = NULL;
lpBits = NULL;
/* We have a truecolor alpha-blended cursor and can use it! */
if (pCursor->bits->argb)
{
WIN_DEBUG_MSG("winLoadCursor: Trying truecolor alphablended cursor\n");
memset (&bi, 0, sizeof (BITMAPV4HEADER));
bi.bV4Size = sizeof(BITMAPV4HEADER);
bi.bV4Width = pScreenPriv->cursor.sm_cx;
bi.bV4Height = -(pScreenPriv->cursor.sm_cy); /* right-side up */
bi.bV4Planes = 1;
bi.bV4BitCount = 32;
bi.bV4V4Compression = BI_BITFIELDS;
bi.bV4RedMask = 0x00FF0000;
bi.bV4GreenMask = 0x0000FF00;
bi.bV4BlueMask = 0x000000FF;
bi.bV4AlphaMask = 0xFF000000;
lpBits = (unsigned long *) calloc (pScreenPriv->cursor.sm_cx*pScreenPriv->cursor.sm_cy,
sizeof (unsigned long));
if (lpBits)
{
for (y=0; y<nCY; y++)
{
unsigned long *src, *dst;
src = &(pCursor->bits->argb[y * pCursor->bits->width]);
dst = &(lpBits[y * pScreenPriv->cursor.sm_cx]);
memcpy (dst, src, 4*nCX);
}
}
} /* End if-truecolor-icon */
if (!lpBits)
{
/* Bicolor, use a palettized DIB */
WIN_DEBUG_MSG("winLoadCursor: Trying two color cursor\n");
pbmi = (BITMAPINFO*)&bi;
memset (pbmi, 0, sizeof (BITMAPINFOHEADER));
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biWidth = pScreenPriv->cursor.sm_cx;
pbmi->bmiHeader.biHeight = -abs(pScreenPriv->cursor.sm_cy); /* right-side up */
pbmi->bmiHeader.biPlanes = 1;
pbmi->bmiHeader.biBitCount = 8;
pbmi->bmiHeader.biCompression = BI_RGB;
pbmi->bmiHeader.biSizeImage = 0;
pbmi->bmiHeader.biClrUsed = 3;
pbmi->bmiHeader.biClrImportant = 3;
pbmi->bmiColors[0].rgbRed = 0; /* Empty */
pbmi->bmiColors[0].rgbGreen = 0;
pbmi->bmiColors[0].rgbBlue = 0;
pbmi->bmiColors[0].rgbReserved = 0;
pbmi->bmiColors[1].rgbRed = pCursor->backRed>>8; /* Background */
pbmi->bmiColors[1].rgbGreen = pCursor->backGreen>>8;
pbmi->bmiColors[1].rgbBlue = pCursor->backBlue>>8;
pbmi->bmiColors[1].rgbReserved = 0;
pbmi->bmiColors[2].rgbRed = pCursor->foreRed>>8; /* Foreground */
pbmi->bmiColors[2].rgbGreen = pCursor->foreGreen>>8;
pbmi->bmiColors[2].rgbBlue = pCursor->foreBlue>>8;
pbmi->bmiColors[2].rgbReserved = 0;
lpBits = (unsigned long *) calloc (pScreenPriv->cursor.sm_cx*pScreenPriv->cursor.sm_cy,
sizeof (char));
pCur = (unsigned char *)lpBits;
if (lpBits)
{
for (y=0; y<pScreenPriv->cursor.sm_cy; y++)
{
for (x=0; x<pScreenPriv->cursor.sm_cx; x++)
{
if (x>=nCX || y>=nCY) /* Outside of X11 icon bounds */
(*pCur++) = 0;
else /* Within X11 icon bounds */
{
int nWinPix = BYTE_COUNT(pScreenPriv->cursor.sm_cx) * y + (x/8);
bit = pAnd[nWinPix];
bit = bit & (1<<(7-(x&7)));
if (!bit) /* Within the cursor mask? */
{
int nXPix = BitmapBytePad(pCursor->bits->width) * y + (x/8);
bit = ~reverse(~pCursor->bits->source[nXPix] & pCursor->bits->mask[nXPix]);
bit = bit & (1<<(7-(x&7)));
if (bit) /* Draw foreground */
(*pCur++) = 2;
else /* Draw background */
(*pCur++) = 1;
}
else /* Outside the cursor mask */
(*pCur++) = 0;
}
} /* end for (x) */
} /* end for (y) */
} /* end if (lpbits) */
}
/* If one of the previous two methods gave us the bitmap we need, make a cursor */
if (lpBits)
{
WIN_DEBUG_MSG("winLoadCursor: Creating bitmap cursor: hotspot %d,%d\n",
pCursor->bits->xhot, pCursor->bits->yhot);
hAnd = NULL;
hXor = NULL;
hAnd = CreateBitmap (pScreenPriv->cursor.sm_cx, pScreenPriv->cursor.sm_cy, 1, 1, pAnd);
hDC = GetDC (NULL);
if (hDC)
{
hXor = CreateCompatibleBitmap (hDC, pScreenPriv->cursor.sm_cx, pScreenPriv->cursor.sm_cy);
SetDIBits (hDC, hXor, 0, pScreenPriv->cursor.sm_cy, lpBits, (BITMAPINFO*)&bi, DIB_RGB_COLORS);
ReleaseDC (NULL, hDC);
}
free (lpBits);
if (hAnd && hXor)
{
ii.fIcon = FALSE;
ii.xHotspot = pCursor->bits->xhot;
ii.yHotspot = pCursor->bits->yhot;
ii.hbmMask = hAnd;
ii.hbmColor = hXor;
hCursor = (HCURSOR) CreateIconIndirect( &ii );
if (hCursor == NULL)
winW32Error(2, "winLoadCursor - CreateIconIndirect failed:");
else
{
if (GetIconInfo(hCursor, &ii))
{
if (ii.fIcon)
{
WIN_DEBUG_MSG("winLoadCursor: CreateIconIndirect returned no cursor. Trying again.\n");
DestroyCursor(hCursor);
ii.fIcon = FALSE;
ii.xHotspot = pCursor->bits->xhot;
ii.yHotspot = pCursor->bits->yhot;
hCursor = (HCURSOR) CreateIconIndirect( &ii );
if (hCursor == NULL)
winW32Error(2, "winLoadCursor - CreateIconIndirect failed:");
}
/* GetIconInfo creates new bitmaps. Destroy them again */
if (ii.hbmMask)
DeleteObject(ii.hbmMask);
if (ii.hbmColor)
DeleteObject(ii.hbmColor);
}
}
}
if (hAnd)
DeleteObject (hAnd);
if (hXor)
DeleteObject (hXor);
}
if (!hCursor)
{
/* We couldn't make a color cursor for this screen, use
black and white instead */
hCursor = CreateCursor (g_hInstance,
pCursor->bits->xhot, pCursor->bits->yhot,
pScreenPriv->cursor.sm_cx, pScreenPriv->cursor.sm_cy,
pAnd, pXor);
if (hCursor == NULL)
winW32Error(2, "winLoadCursor - CreateCursor failed:");
}
free (pAnd);
free (pXor);
return hCursor;
}
/*
===========================================================================
Pointer sprite functions
===========================================================================
*/
/*
* winRealizeCursor
* Convert the X cursor representation to native format if possible.
*/
static Bool
winRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
{
if(pCursor == NULL || pCursor->bits == NULL)
return FALSE;
/* FIXME: cache ARGB8888 representation? */
return TRUE;
}
/*
* winUnrealizeCursor
* Free the storage space associated with a realized cursor.
*/
static Bool
winUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor)
{
return TRUE;
}
/*
* winSetCursor
* Set the cursor sprite and position.
*/
static void
winSetCursor (ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
{
POINT ptCurPos, ptTemp;
HWND hwnd;
RECT rcClient;
BOOL bInhibit;
winScreenPriv(pScreen);
WIN_DEBUG_MSG("winSetCursor: cursor=%p\n", pCursor);
/* Inhibit changing the cursor if the mouse is not in a client area */
bInhibit = FALSE;
if (GetCursorPos (&ptCurPos))
{
hwnd = WindowFromPoint (ptCurPos);
if (hwnd)
{
if (GetClientRect (hwnd, &rcClient))
{
ptTemp.x = rcClient.left;
ptTemp.y = rcClient.top;
if (ClientToScreen (hwnd, &ptTemp))
{
rcClient.left = ptTemp.x;
rcClient.top = ptTemp.y;
ptTemp.x = rcClient.right;
ptTemp.y = rcClient.bottom;
if (ClientToScreen (hwnd, &ptTemp))
{
rcClient.right = ptTemp.x;
rcClient.bottom = ptTemp.y;
if (!PtInRect (&rcClient, ptCurPos))
bInhibit = TRUE;
}
}
}
}
}
if (pCursor == NULL)
{
if (pScreenPriv->cursor.visible)
{
if (!bInhibit && g_fSoftwareCursor)
ShowCursor (FALSE);
pScreenPriv->cursor.visible = FALSE;
}
}
else
{
if (pScreenPriv->cursor.handle)
{
if (!bInhibit)
SetCursor (NULL);
DestroyCursor (pScreenPriv->cursor.handle);
pScreenPriv->cursor.handle = NULL;
}
pScreenPriv->cursor.handle =
winLoadCursor (pScreen, pCursor, pScreen->myNum);
WIN_DEBUG_MSG("winSetCursor: handle=%p\n", pScreenPriv->cursor.handle);
if (!bInhibit)
SetCursor (pScreenPriv->cursor.handle);
if (!pScreenPriv->cursor.visible)
{
if (!bInhibit && g_fSoftwareCursor)
ShowCursor (TRUE);
pScreenPriv->cursor.visible = TRUE;
}
}
}
/*
* QuartzMoveCursor
* Move the cursor. This is a noop for us.
*/
static void
winMoveCursor (ScreenPtr pScreen, int x, int y)
{
}
static miPointerSpriteFuncRec winSpriteFuncsRec = {
winRealizeCursor,
winUnrealizeCursor,
winSetCursor,
winMoveCursor
};
/*
===========================================================================
Other screen functions
===========================================================================
*/
/*
* winCursorQueryBestSize
* Handle queries for best cursor size
*/
static void
winCursorQueryBestSize (int class, unsigned short *width,
unsigned short *height, ScreenPtr pScreen)
{
winScreenPriv(pScreen);
if (class == CursorShape)
{
*width = pScreenPriv->cursor.sm_cx;
*height = pScreenPriv->cursor.sm_cy;
}
else
{
if (pScreenPriv->cursor.QueryBestSize)
(*pScreenPriv->cursor.QueryBestSize)(class, width, height, pScreen);
}
}
/*
* winInitCursor
* Initialize cursor support
*/
Bool
winInitCursor (ScreenPtr pScreen)
{
winScreenPriv(pScreen);
miPointerScreenPtr pPointPriv;
/* override some screen procedures */
pScreenPriv->cursor.QueryBestSize = pScreen->QueryBestSize;
pScreen->QueryBestSize = winCursorQueryBestSize;
pPointPriv = (miPointerScreenPtr) pScreen->devPrivates[miPointerScreenIndex].ptr;
pScreenPriv->cursor.spriteFuncs = pPointPriv->spriteFuncs;
pPointPriv->spriteFuncs = &winSpriteFuncsRec;
pScreenPriv->cursor.handle = NULL;
pScreenPriv->cursor.visible = FALSE;
pScreenPriv->cursor.sm_cx = GetSystemMetrics (SM_CXCURSOR);
pScreenPriv->cursor.sm_cy = GetSystemMetrics (SM_CYCURSOR);
return TRUE;
}
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