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222 lines
8.1 KiB
C
222 lines
8.1 KiB
C
/*
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* X11 mouse driver
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*
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* Copyright 1998 Ulrich Weigand
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*/
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#include "config.h"
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#ifndef X_DISPLAY_MISSING
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#include "ts_xlib.h"
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#include "callback.h"
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#include "debug.h"
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#include "display.h"
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#include "win.h"
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#include "windef.h"
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#include "x11drv.h"
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/**********************************************************************/
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Cursor X11DRV_MOUSE_XCursor = None; /* Current X cursor */
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BOOL X11DRV_MOUSE_DisableWarpPointer = FALSE; /* hack; see DISPLAY_MoveCursor */
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/***********************************************************************
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* X11DRV_MOUSE_DoSetCursor
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*/
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static BOOL X11DRV_MOUSE_DoSetCursor( CURSORICONINFO *ptr )
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{
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Pixmap pixmapBits, pixmapMask, pixmapAll;
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XColor fg, bg;
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Cursor cursor = None;
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if (!ptr) /* Create an empty cursor */
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{
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static const char data[] = { 0 };
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bg.red = bg.green = bg.blue = 0x0000;
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pixmapBits = XCreateBitmapFromData( display, X11DRV_GetXRootWindow(), data, 1, 1 );
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if (pixmapBits)
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{
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cursor = XCreatePixmapCursor( display, pixmapBits, pixmapBits,
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&bg, &bg, 0, 0 );
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XFreePixmap( display, pixmapBits );
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}
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}
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else /* Create the X cursor from the bits */
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{
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XImage *image;
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if (ptr->bPlanes * ptr->bBitsPerPixel != 1)
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{
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WARN(cursor, "Cursor has more than 1 bpp!\n" );
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return FALSE;
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}
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/* Create a pixmap and transfer all the bits to it */
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/* NOTE: Following hack works, but only because XFree depth
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* 1 images really use 1 bit/pixel (and so the same layout
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* as the Windows cursor data). Perhaps use a more generic
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* algorithm here.
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*/
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pixmapAll = XCreatePixmap( display, X11DRV_GetXRootWindow(),
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ptr->nWidth, ptr->nHeight * 2, 1 );
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image = XCreateImage( display, DefaultVisualOfScreen(X11DRV_GetXScreen()),
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1, ZPixmap, 0, (char *)(ptr + 1), ptr->nWidth,
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ptr->nHeight * 2, 16, ptr->nWidthBytes);
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if (image)
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{
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image->byte_order = MSBFirst;
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image->bitmap_bit_order = MSBFirst;
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image->bitmap_unit = 16;
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_XInitImageFuncPtrs(image);
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if (pixmapAll)
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XPutImage( display, pixmapAll, BITMAP_monoGC, image,
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0, 0, 0, 0, ptr->nWidth, ptr->nHeight * 2 );
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image->data = NULL;
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XDestroyImage( image );
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}
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/* Now create the 2 pixmaps for bits and mask */
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pixmapBits = XCreatePixmap( display, X11DRV_GetXRootWindow(),
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ptr->nWidth, ptr->nHeight, 1 );
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pixmapMask = XCreatePixmap( display, X11DRV_GetXRootWindow(),
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ptr->nWidth, ptr->nHeight, 1 );
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/* Make sure everything went OK so far */
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if (pixmapBits && pixmapMask && pixmapAll)
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{
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/* We have to do some magic here, as cursors are not fully
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* compatible between Windows and X11. Under X11, there
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* are only 3 possible color cursor: black, white and
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* masked. So we map the 4th Windows color (invert the
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* bits on the screen) to black. This require some boolean
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* arithmetic:
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*
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* Windows | X11
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* Xor And Result | Bits Mask Result
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* 0 0 black | 0 1 background
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* 0 1 no change | X 0 no change
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* 1 0 white | 1 1 foreground
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* 1 1 inverted | 0 1 background
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*
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* which gives:
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* Bits = 'Xor' and not 'And'
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* Mask = 'Xor' or not 'And'
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*
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* FIXME: apparently some servers do support 'inverted' color.
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* I don't know if it's correct per the X spec, but maybe
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* we ought to take advantage of it. -- AJ
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*/
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XCopyArea( display, pixmapAll, pixmapBits, BITMAP_monoGC,
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0, 0, ptr->nWidth, ptr->nHeight, 0, 0 );
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XCopyArea( display, pixmapAll, pixmapMask, BITMAP_monoGC,
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0, 0, ptr->nWidth, ptr->nHeight, 0, 0 );
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XSetFunction( display, BITMAP_monoGC, GXandReverse );
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XCopyArea( display, pixmapAll, pixmapBits, BITMAP_monoGC,
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0, ptr->nHeight, ptr->nWidth, ptr->nHeight, 0, 0 );
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XSetFunction( display, BITMAP_monoGC, GXorReverse );
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XCopyArea( display, pixmapAll, pixmapMask, BITMAP_monoGC,
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0, ptr->nHeight, ptr->nWidth, ptr->nHeight, 0, 0 );
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XSetFunction( display, BITMAP_monoGC, GXcopy );
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fg.red = fg.green = fg.blue = 0xffff;
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bg.red = bg.green = bg.blue = 0x0000;
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cursor = XCreatePixmapCursor( display, pixmapBits, pixmapMask,
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&fg, &bg, ptr->ptHotSpot.x, ptr->ptHotSpot.y );
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}
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/* Now free everything */
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if (pixmapAll) XFreePixmap( display, pixmapAll );
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if (pixmapBits) XFreePixmap( display, pixmapBits );
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if (pixmapMask) XFreePixmap( display, pixmapMask );
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}
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if (cursor == None) return FALSE;
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if (X11DRV_MOUSE_XCursor != None) XFreeCursor( display, X11DRV_MOUSE_XCursor );
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X11DRV_MOUSE_XCursor = cursor;
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if (X11DRV_GetXRootWindow() != DefaultRootWindow(display) || !WIN_GetDesktop())
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{
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/* Set the cursor on the desktop window */
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XDefineCursor( display, X11DRV_GetXRootWindow(), cursor );
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}
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else
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{
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/* FIXME: this won't work correctly with native USER !*/
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/* Set the same cursor for all top-level windows */
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HWND hwnd = GetWindow( GetDesktopWindow(), GW_CHILD );
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while(hwnd)
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{
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WND *tmpWnd = WIN_FindWndPtr(hwnd);
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Window win = X11DRV_WND_FindXWindow(tmpWnd );
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if (win && win!=DefaultRootWindow(display))
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XDefineCursor( display, win, cursor );
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hwnd = GetWindow( hwnd, GW_HWNDNEXT );
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WIN_ReleaseWndPtr(tmpWnd);
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}
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}
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WIN_ReleaseDesktop();
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return TRUE;
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}
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/***********************************************************************
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* X11DRV_MOUSE_SetCursor
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*/
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void X11DRV_MOUSE_SetCursor( CURSORICONINFO *lpCursor )
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{
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EnterCriticalSection( &X11DRV_CritSection );
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CALL_LARGE_STACK( X11DRV_MOUSE_DoSetCursor, lpCursor );
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LeaveCriticalSection( &X11DRV_CritSection );
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}
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/***********************************************************************
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* X11DRV_MOUSE_MoveCursor
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*/
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void X11DRV_MOUSE_MoveCursor(WORD wAbsX, WORD wAbsY)
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{
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/*
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* We do not want the to create MotionNotify events here,
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* otherwise we will get an endless recursion:
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* XMotionEvent -> MOUSEEVENTF_MOVE -> mouse_event -> DisplayMoveCursor
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* -> XWarpPointer -> XMotionEvent -> ...
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*
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* Unfortunately, the XWarpPointer call does create a MotionNotify
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* event. So, we use a hack: before MOUSE_SendEvent calls the mouse event
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* procedure, it sets a global flag. If this flag is set, we skip the
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* XWarpPointer call. If we are *not* called from within MOUSE_SendEvent,
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* we will call XWarpPointer, which will create a MotionNotify event.
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* Strictly speaking, this is also wrong, but that should normally not
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* have any negative effects ...
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*
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* But first of all, we check whether we already are at the position
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* are supposed to move to; if so, we don't need to do anything.
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*/
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Window root, child;
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int rootX, rootY, winX, winY;
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unsigned int xstate;
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if (X11DRV_MOUSE_DisableWarpPointer) return;
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if (!TSXQueryPointer( display, X11DRV_GetXRootWindow(), &root, &child,
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&rootX, &rootY, &winX, &winY, &xstate ))
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return;
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if ( winX == wAbsX && winY == wAbsY )
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return;
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TRACE( cursor, "(%d,%d): moving from (%d,%d)\n", wAbsX, wAbsY, winX, winY );
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TSXWarpPointer( display, X11DRV_GetXRootWindow(), X11DRV_GetXRootWindow(),
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0, 0, 0, 0, wAbsX, wAbsY );
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}
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#endif /* !defined(X_DISPLAY_MISSING) */
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