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author | dscho <dscho> | 2004-05-25 09:05:09 +0000 |
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committer | dscho <dscho> | 2004-05-25 09:05:09 +0000 |
commit | 876868553da8f69ed1a368688b6d01a8a7bc1a39 (patch) | |
tree | 0bf872ebeadb746eec0f4695230c8777680ece9f /cursor.c | |
parent | 0130bdb9d6c61e0446ab514816041f1b9283410a (diff) | |
download | libtdevnc-876868553da8f69ed1a368688b6d01a8a7bc1a39.tar.gz libtdevnc-876868553da8f69ed1a368688b6d01a8a7bc1a39.zip |
move the library into libvncserver/, x11vnc into x11vnc/
Diffstat (limited to 'cursor.c')
-rw-r--r-- | cursor.c | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/cursor.c b/cursor.c deleted file mode 100644 index 4f290da..0000000 --- a/cursor.c +++ /dev/null @@ -1,527 +0,0 @@ -/* - * cursor.c - support for cursor shape updates. - */ - -/* - * Copyright (C) 2000, 2001 Const Kaplinsky. All Rights Reserved. - * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. - * - * This 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 software 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 software; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, - * USA. - */ - -#include <rfb/rfb.h> - -/* - * Send cursor shape either in X-style format or in client pixel format. - */ - -rfbBool -rfbSendCursorShape(cl) - rfbClientPtr cl; -{ - rfbCursorPtr pCursor; - rfbFramebufferUpdateRectHeader rect; - rfbXCursorColors colors; - int saved_ublen; - int bitmapRowBytes, maskBytes, dataBytes; - int i, j; - uint8_t *bitmapData; - uint8_t bitmapByte; - - pCursor = cl->screen->getCursorPtr(cl); - /*if(!pCursor) return TRUE;*/ - - if (cl->useRichCursorEncoding) { - if(pCursor && !pCursor->richSource) - MakeRichCursorFromXCursor(cl->screen,pCursor); - rect.encoding = Swap32IfLE(rfbEncodingRichCursor); - } else { - if(pCursor && !pCursor->source) - MakeXCursorFromRichCursor(cl->screen,pCursor); - rect.encoding = Swap32IfLE(rfbEncodingXCursor); - } - - /* If there is no cursor, send update with empty cursor data. */ - - if ( pCursor && pCursor->width == 1 && - pCursor->height == 1 && - pCursor->mask[0] == 0 ) { - pCursor = NULL; - } - - if (pCursor == NULL) { - if (cl->ublen + sz_rfbFramebufferUpdateRectHeader > UPDATE_BUF_SIZE ) { - if (!rfbSendUpdateBuf(cl)) - return FALSE; - } - rect.r.x = rect.r.y = 0; - rect.r.w = rect.r.h = 0; - memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, - sz_rfbFramebufferUpdateRectHeader); - cl->ublen += sz_rfbFramebufferUpdateRectHeader; - - cl->rfbCursorShapeBytesSent += sz_rfbFramebufferUpdateRectHeader; - cl->rfbCursorShapeUpdatesSent++; - - if (!rfbSendUpdateBuf(cl)) - return FALSE; - - return TRUE; - } - - /* Calculate data sizes. */ - - bitmapRowBytes = (pCursor->width + 7) / 8; - maskBytes = bitmapRowBytes * pCursor->height; - dataBytes = (cl->useRichCursorEncoding) ? - (pCursor->width * pCursor->height * - (cl->format.bitsPerPixel / 8)) : maskBytes; - - /* Send buffer contents if needed. */ - - if ( cl->ublen + sz_rfbFramebufferUpdateRectHeader + - sz_rfbXCursorColors + maskBytes + dataBytes > UPDATE_BUF_SIZE ) { - if (!rfbSendUpdateBuf(cl)) - return FALSE; - } - - if ( cl->ublen + sz_rfbFramebufferUpdateRectHeader + - sz_rfbXCursorColors + maskBytes + dataBytes > UPDATE_BUF_SIZE ) { - return FALSE; /* FIXME. */ - } - - saved_ublen = cl->ublen; - - /* Prepare rectangle header. */ - - rect.r.x = Swap16IfLE(pCursor->xhot); - rect.r.y = Swap16IfLE(pCursor->yhot); - rect.r.w = Swap16IfLE(pCursor->width); - rect.r.h = Swap16IfLE(pCursor->height); - - memcpy(&cl->updateBuf[cl->ublen], (char *)&rect,sz_rfbFramebufferUpdateRectHeader); - cl->ublen += sz_rfbFramebufferUpdateRectHeader; - - /* Prepare actual cursor data (depends on encoding used). */ - - if (!cl->useRichCursorEncoding) { - /* XCursor encoding. */ - colors.foreRed = (char)(pCursor->foreRed >> 8); - colors.foreGreen = (char)(pCursor->foreGreen >> 8); - colors.foreBlue = (char)(pCursor->foreBlue >> 8); - colors.backRed = (char)(pCursor->backRed >> 8); - colors.backGreen = (char)(pCursor->backGreen >> 8); - colors.backBlue = (char)(pCursor->backBlue >> 8); - - memcpy(&cl->updateBuf[cl->ublen], (char *)&colors, sz_rfbXCursorColors); - cl->ublen += sz_rfbXCursorColors; - - bitmapData = (uint8_t *)pCursor->source; - - for (i = 0; i < pCursor->height; i++) { - for (j = 0; j < bitmapRowBytes; j++) { - bitmapByte = bitmapData[i * bitmapRowBytes + j]; - cl->updateBuf[cl->ublen++] = (char)bitmapByte; - } - } - } else { - /* RichCursor encoding. */ - int bpp1=cl->screen->rfbServerFormat.bitsPerPixel/8, - bpp2=cl->format.bitsPerPixel/8; - (*cl->translateFn)(cl->translateLookupTable, - &(cl->screen->rfbServerFormat), - &cl->format, (char*)pCursor->richSource, - &cl->updateBuf[cl->ublen], - pCursor->width*bpp1, pCursor->width, pCursor->height); - - cl->ublen += pCursor->width*bpp2*pCursor->height; - } - - /* Prepare transparency mask. */ - - bitmapData = (uint8_t *)pCursor->mask; - - for (i = 0; i < pCursor->height; i++) { - for (j = 0; j < bitmapRowBytes; j++) { - bitmapByte = bitmapData[i * bitmapRowBytes + j]; - cl->updateBuf[cl->ublen++] = (char)bitmapByte; - } - } - - /* Send everything we have prepared in the cl->updateBuf[]. */ - - cl->rfbCursorShapeBytesSent += (cl->ublen - saved_ublen); - cl->rfbCursorShapeUpdatesSent++; - - if (!rfbSendUpdateBuf(cl)) - return FALSE; - - return TRUE; -} - -/* - * Send cursor position (PointerPos pseudo-encoding). - */ - -rfbBool -rfbSendCursorPos(rfbClientPtr cl) -{ - rfbFramebufferUpdateRectHeader rect; - - if (cl->ublen + sz_rfbFramebufferUpdateRectHeader > UPDATE_BUF_SIZE) { - if (!rfbSendUpdateBuf(cl)) - return FALSE; - } - - rect.encoding = Swap32IfLE(rfbEncodingPointerPos); - rect.r.x = Swap16IfLE(cl->screen->cursorX); - rect.r.y = Swap16IfLE(cl->screen->cursorY); - rect.r.w = 0; - rect.r.h = 0; - - memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, - sz_rfbFramebufferUpdateRectHeader); - cl->ublen += sz_rfbFramebufferUpdateRectHeader; - - cl->rfbCursorPosBytesSent += sz_rfbFramebufferUpdateRectHeader; - cl->rfbCursorPosUpdatesSent++; - - if (!rfbSendUpdateBuf(cl)) - return FALSE; - - return TRUE; -} - -/* conversion routine for predefined cursors in LSB order */ -unsigned char rfbReverseByte[0x100] = { - /* copied from Xvnc/lib/font/util/utilbitmap.c */ - 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, - 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, - 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, - 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, - 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, - 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, - 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, - 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, - 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, - 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, - 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, - 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, - 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, - 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, - 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, - 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, - 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, - 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, - 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, - 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, - 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, - 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, - 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, - 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, - 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, - 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, - 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, - 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, - 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, - 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, - 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, - 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff -}; - -void rfbConvertLSBCursorBitmapOrMask(int width,int height,unsigned char* bitmap) -{ - int i,t=(width+7)/8*height; - for(i=0;i<t;i++) - bitmap[i]=rfbReverseByte[(int)bitmap[i]]; -} - -/* Cursor creation. You "paint" a cursor and let these routines do the work */ - -rfbCursorPtr rfbMakeXCursor(int width,int height,char* cursorString,char* maskString) -{ - int i,j,w=(width+7)/8; - rfbCursorPtr cursor = (rfbCursorPtr)calloc(1,sizeof(rfbCursor)); - char* cp; - unsigned char bit; - - cursor->cleanup=TRUE; - cursor->width=width; - cursor->height=height; - /*cursor->backRed=cursor->backGreen=cursor->backBlue=0xffff;*/ - cursor->foreRed=cursor->foreGreen=cursor->foreBlue=0xffff; - - cursor->source = (unsigned char*)calloc(w,height); - cursor->cleanupSource = TRUE; - for(j=0,cp=cursorString;j<height;j++) - for(i=0,bit=0x80;i<width;i++,bit=(bit&1)?0x80:bit>>1,cp++) - if(*cp!=' ') cursor->source[j*w+i/8]|=bit; - - if(maskString) { - cursor->mask = (unsigned char*)calloc(w,height); - for(j=0,cp=maskString;j<height;j++) - for(i=0,bit=0x80;i<width;i++,bit=(bit&1)?0x80:bit>>1,cp++) - if(*cp!=' ') cursor->mask[j*w+i/8]|=bit; - } else - cursor->mask = (unsigned char*)rfbMakeMaskForXCursor(width,height,(char*)cursor->source); - cursor->cleanupMask = TRUE; - - return(cursor); -} - -char* rfbMakeMaskForXCursor(int width,int height,char* source) -{ - int i,j,w=(width+7)/8; - char* mask=(char*)calloc(w,height); - unsigned char c; - - for(j=0;j<height;j++) - for(i=w-1;i>=0;i--) { - c=source[j*w+i]; - if(j>0) c|=source[(j-1)*w+i]; - if(j<height-1) c|=source[(j+1)*w+i]; - - if(i>0 && (c&0x80)) - mask[j*w+i-1]|=0x01; - if(i<w-1 && (c&0x01)) - mask[j*w+i+1]|=0x80; - - mask[j*w+i]|=(c<<1)|c|(c>>1); - } - - return(mask); -} - -void rfbFreeCursor(rfbCursorPtr cursor) -{ - if(cursor) { - if(cursor->cleanupRichSource && cursor->richSource) - free(cursor->richSource); - if(cursor->cleanupSource && cursor->source) - free(cursor->source); - if(cursor->cleanupMask && cursor->mask) - free(cursor->mask); - if(cursor->cleanup) - free(cursor); - else { - cursor->cleanup=cursor->cleanupSource=cursor->cleanupMask - =cursor->cleanupRichSource=FALSE; - cursor->source=cursor->mask=cursor->richSource=0; - } - } - -} - -/* background and foregroud colour have to be set beforehand */ -void MakeXCursorFromRichCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr cursor) -{ - rfbPixelFormat* format=&rfbScreen->rfbServerFormat; - int i,j,w=(cursor->width+7)/8,bpp=format->bitsPerPixel/8, - width=cursor->width*bpp; - uint32_t background; - char *back=(char*)&background; - unsigned char bit; - - if(cursor->source && cursor->cleanupSource) - free(cursor->source); - cursor->source=(unsigned char*)calloc(w,cursor->height); - cursor->cleanupSource=TRUE; - - if(format->bigEndian) - back+=4-bpp; - - background=cursor->backRed<<format->redShift| - cursor->backGreen<<format->greenShift|cursor->backBlue<<format->blueShift; - - for(j=0;j<cursor->height;j++) - for(i=0,bit=0x80;i<cursor->width;i++,bit=(bit&1)?0x80:bit>>1) - if(memcmp(cursor->richSource+j*width+i*bpp,back,bpp)) - cursor->source[j*w+i/8]|=bit; -} - -void MakeRichCursorFromXCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr cursor) -{ - rfbPixelFormat* format=&rfbScreen->rfbServerFormat; - int i,j,w=(cursor->width+7)/8,bpp=format->bitsPerPixel/8; - uint32_t background,foreground; - char *back=(char*)&background,*fore=(char*)&foreground; - unsigned char *cp; - unsigned char bit; - - if(cursor->richSource && cursor->cleanupRichSource) - free(cursor->richSource); - cp=cursor->richSource=(unsigned char*)calloc(cursor->width*bpp,cursor->height); - cursor->cleanupRichSource=TRUE; - - if(format->bigEndian) { - back+=4-bpp; - fore+=4-bpp; - } - - background=cursor->backRed<<format->redShift| - cursor->backGreen<<format->greenShift|cursor->backBlue<<format->blueShift; - foreground=cursor->foreRed<<format->redShift| - cursor->foreGreen<<format->greenShift|cursor->foreBlue<<format->blueShift; - - for(j=0;j<cursor->height;j++) - for(i=0,bit=0x80;i<cursor->height;i++,bit=(bit&1)?0x80:bit>>1,cp+=bpp) - if(cursor->source[j*w+i/8]&bit) memcpy(cp,fore,bpp); - else memcpy(cp,back,bpp); -} - -/* functions to draw/hide cursor directly in the frame buffer */ - -void rfbUndrawCursor(rfbScreenInfoPtr s) -{ - rfbCursorPtr c=s->cursor; - int j,x1,x2,y1,y2,bpp=s->rfbServerFormat.bitsPerPixel/8, - rowstride=s->paddedWidthInBytes; - LOCK(s->cursorMutex); - if(!s->cursorIsDrawn) { - UNLOCK(s->cursorMutex); - return; - } - - /* restore what is under the cursor */ - x1=s->cursorX-c->xhot; - x2=x1+c->width; - if(x1<0) x1=0; - if(x2>=s->width) x2=s->width-1; - x2-=x1; if(x2<=0) { - UNLOCK(s->cursorMutex); - return; - } - y1=s->cursorY-c->yhot; - y2=y1+c->height; - if(y1<0) y1=0; - if(y2>=s->height) y2=s->height-1; - y2-=y1; if(y2<=0) { - UNLOCK(s->cursorMutex); - return; - } - - /* get saved data */ - for(j=0;j<y2;j++) - memcpy(s->frameBuffer+(y1+j)*rowstride+x1*bpp, - s->underCursorBuffer+j*x2*bpp, - x2*bpp); - - /* rfbMarkRectAsModified(s,x1,y1,x1+x2,y1+y2); */ - s->cursorIsDrawn = FALSE; - UNLOCK(s->cursorMutex); -} - -void rfbDrawCursor(rfbScreenInfoPtr s) -{ - rfbCursorPtr c=s->cursor; - int i,j,x1,x2,y1,y2,i1,j1,bpp=s->rfbServerFormat.bitsPerPixel/8, - rowstride=s->paddedWidthInBytes, - bufSize,w; - rfbBool wasChanged=FALSE; - - if(!c) return; - LOCK(s->cursorMutex); - if(s->cursorIsDrawn) { - /* is already drawn */ - UNLOCK(s->cursorMutex); - return; - } - bufSize=c->width*c->height*bpp; - w=(c->width+7)/8; - if(s->underCursorBufferLen<bufSize) { - if(s->underCursorBuffer!=NULL) - free(s->underCursorBuffer); - s->underCursorBuffer=malloc(bufSize); - s->underCursorBufferLen=bufSize; - } - /* save what is under the cursor */ - i1=j1=0; /* offset in cursor */ - x1=s->cursorX-c->xhot; - x2=x1+c->width; - if(x1<0) { i1=-x1; x1=0; } - if(x2>=s->width) x2=s->width-1; - x2-=x1; if(x2<=0) { - UNLOCK(s->cursorMutex); - return; /* nothing to do */ - } - y1=s->cursorY-c->yhot; - y2=y1+c->height; - if(y1<0) { j1=-y1; y1=0; } - if(y2>=s->height) y2=s->height-1; - y2-=y1; if(y2<=0) { - UNLOCK(s->cursorMutex); - return; /* nothing to do */ - } - - /* save data */ - for(j=0;j<y2;j++) { - char* dest=s->underCursorBuffer+j*x2*bpp; - const char* src=s->frameBuffer+(y1+j)*rowstride+x1*bpp; - unsigned int count=x2*bpp; - if(wasChanged || memcmp(dest,src,count)) { - wasChanged=TRUE; - memcpy(dest,src,count); - } - } - - if(!c->richSource) - MakeRichCursorFromXCursor(s,c); - - /* now the cursor has to be drawn */ - for(j=0;j<y2;j++) - for(i=0;i<x2;i++) - if((c->mask[(j+j1)*w+(i+i1)/8]<<((i+i1)&7))&0x80) - memcpy(s->frameBuffer+(j+y1)*rowstride+(i+x1)*bpp, - c->richSource+(j+j1)*c->width*bpp+(i+i1)*bpp,bpp); - - if(wasChanged) - rfbMarkRectAsModified(s,x1,y1,x1+x2,y1+y2); - s->cursorIsDrawn = TRUE; - UNLOCK(s->cursorMutex); -} - -/* for debugging */ - -void rfbPrintXCursor(rfbCursorPtr cursor) -{ - int i,i1,j,w=(cursor->width+7)/8; - unsigned char bit; - for(j=0;j<cursor->height;j++) { - for(i=0,i1=0,bit=0x80;i1<cursor->width;i1++,i+=(bit&1)?1:0,bit=(bit&1)?0x80:bit>>1) - if(cursor->source[j*w+i]&bit) putchar('#'); else putchar(' '); - putchar(':'); - for(i=0,i1=0,bit=0x80;i1<cursor->width;i1++,i+=(bit&1)?1:0,bit=(bit&1)?0x80:bit>>1) - if(cursor->mask[j*w+i]&bit) putchar('#'); else putchar(' '); - putchar('\n'); - } -} - -void rfbSetCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr c,rfbBool freeOld) -{ - LOCK(rfbScreen->cursorMutex); - while(rfbScreen->cursorIsDrawn) { - UNLOCK(rfbScreen->cursorMutex); - rfbUndrawCursor(rfbScreen); - LOCK(rfbScreen->cursorMutex); - } - - if(rfbScreen->cursor && (freeOld || rfbScreen->cursor->cleanup)) - rfbFreeCursor(rfbScreen->cursor); - - rfbScreen->cursor = c; - - UNLOCK(rfbScreen->cursorMutex); -} |