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-rw-r--r--krfb/libvncserver/cursor.c678
1 files changed, 678 insertions, 0 deletions
diff --git a/krfb/libvncserver/cursor.c b/krfb/libvncserver/cursor.c
new file mode 100644
index 00000000..13175118
--- /dev/null
+++ b/krfb/libvncserver/cursor.c
@@ -0,0 +1,678 @@
+/*
+ * 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.h"
+
+/*
+ * Send cursor shape either in X-style format or in client pixel format.
+ */
+
+Bool
+rfbSendCursorShape(cl)
+ rfbClientPtr cl;
+{
+ rfbCursorPtr pCursor;
+ rfbFramebufferUpdateRectHeader rect;
+ rfbXCursorColors colors;
+ int saved_ublen;
+ int bitmapRowBytes, maskBytes, dataBytes;
+ int i, j;
+ CARD8 *bitmapData;
+ CARD8 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->rfbCursorBytesSent += sz_rfbFramebufferUpdateRectHeader;
+ cl->rfbCursorUpdatesSent++;
+
+ 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 = (CARD8 *)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, pCursor->richSource,
+ &cl->updateBuf[cl->ublen],
+ pCursor->width*bpp1, pCursor->width, pCursor->height);
+
+ cl->ublen += pCursor->width*bpp2*pCursor->height;
+ }
+
+ /* Prepare transparency mask. */
+
+ bitmapData = (CARD8 *)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->rfbCursorBytesSent += (cl->ublen - saved_ublen);
+ cl->rfbCursorUpdatesSent++;
+
+ if (!rfbSendUpdateBuf(cl))
+ return FALSE;
+
+ return TRUE;
+}
+
+/*
+ * Send soft cursor state and possibly image
+ */
+
+Bool
+rfbSendSoftCursor(rfbClientPtr cl, Bool cursorWasChanged)
+{
+ rfbCursorPtr pCursor;
+ rfbSoftCursorSetImage setImage;
+ rfbSoftCursorMove moveMsg;
+ rfbFramebufferUpdateRectHeader rect;
+ int saved_ublen, i, scOindex, scNindex, nlen, imgLen;
+
+ pCursor = cl->screen->getCursorPtr(cl);
+ if (cursorWasChanged && cl->softSource) {
+ free(cl->softSource);
+ cl->softSource = 0;
+ }
+ if (!cl->softSource)
+ MakeSoftCursor(cl, pCursor);
+
+ imgLen = cl->softSourceLen;
+
+ /* 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;
+ }
+
+ setImage.imageLength = Swap16IfLE(imgLen);
+
+ scOindex = -1;
+ scNindex = -1;
+ for (i = 0; i < rfbSoftCursorMaxImages; i++) {
+ rfbSoftCursorSetImage *scsi = cl->softCursorImages[i];
+ if (!scsi) {
+ scNindex = i;
+ break;
+ }
+
+ setImage.imageIndex = scsi->imageIndex;
+ if (!memcmp((char*)scsi, (char*)&setImage, sizeof(setImage))) {
+ if (imgLen && !memcmp(((char*)scsi)+sizeof(rfbSoftCursorSetImage),
+ cl->softSource,
+ imgLen)) {
+ scOindex = i;
+ break;
+ }
+ }
+ }
+
+ nlen = 0;
+ if (scOindex < 0) {
+ if (scNindex < 0) {
+ scNindex = cl->nextUnusedSoftCursorImage;
+ cl->nextUnusedSoftCursorImage = (cl->nextUnusedSoftCursorImage+1)
+ % rfbSoftCursorMaxImages;
+ free(cl->softCursorImages[scNindex]);
+ }
+
+ scOindex = scNindex;
+ setImage.imageIndex = scNindex + rfbSoftCursorSetIconOffset;
+ nlen = sizeof(setImage) + imgLen;
+ cl->softCursorImages[scNindex] = calloc(1, nlen);
+ memcpy((char*)cl->softCursorImages[scNindex], (char*)&setImage,
+ sizeof(setImage));
+ if (imgLen)
+ memcpy(((char*)cl->softCursorImages[scNindex])+sizeof(setImage),
+ (char*)cl->softSource, imgLen);
+ }
+
+ /* Send buffer contents if needed. */
+
+ if ( cl->ublen + sizeof(rfbSoftCursorMove) +
+ ((scNindex >= 0 && cursorWasChanged) ?
+ (sizeof(rfbSoftCursorSetImage) + imgLen) : 0) > UPDATE_BUF_SIZE) {
+
+ if (!rfbSendUpdateBuf(cl))
+ return FALSE;
+ }
+
+ saved_ublen = cl->ublen;
+
+ if (scNindex >= 0 && cursorWasChanged) {
+ rect.encoding = Swap32IfLE(rfbEncodingSoftCursor);
+ if (pCursor) {
+ rect.r.x = Swap16IfLE(pCursor->xhot);
+ rect.r.y = Swap16IfLE(pCursor->yhot);
+ rect.r.w = Swap16IfLE(pCursor->width);
+ rect.r.h = Swap16IfLE(pCursor->height);
+ }
+ else {
+ rect.r.x = 0;
+ rect.r.y = 0;
+ rect.r.w = 0;
+ rect.r.h = 0;
+ }
+
+ memcpy(&cl->updateBuf[cl->ublen],
+ (char *)&rect,sz_rfbFramebufferUpdateRectHeader);
+ cl->ublen += sz_rfbFramebufferUpdateRectHeader;
+ memcpy(&cl->updateBuf[cl->ublen], (char*)cl->softCursorImages[scNindex], nlen);
+ cl->ublen += nlen;
+ cl->rfbCursorUpdatesSent++;
+ }
+
+ rect.encoding = Swap32IfLE(rfbEncodingSoftCursor);
+ rect.r.x = 0;
+ rect.r.y = 0;
+ rect.r.w = Swap16IfLE(cl->screen->cursorX);
+ rect.r.h = Swap16IfLE(cl->screen->cursorY);
+ moveMsg.imageIndex = scOindex;
+ moveMsg.buttonMask = 0; /* todo */
+ memcpy(&cl->updateBuf[cl->ublen],
+ (char *)&rect,sz_rfbFramebufferUpdateRectHeader);
+ cl->ublen += sz_rfbFramebufferUpdateRectHeader;
+ memcpy(&cl->updateBuf[cl->ublen], (char*)&moveMsg, sizeof(moveMsg));
+ cl->ublen += sizeof(moveMsg);
+
+ /* Send everything we have prepared in the cl->updateBuf[]. */
+
+ cl->rfbCursorBytesSent += (cl->ublen - saved_ublen);
+ cl->rfbCursorUpdatesSent++;
+
+ return rfbSendUpdateBuf(cl);
+}
+
+/* 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->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);
+ 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,cursor->source);
+
+ 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->richSource)
+ free(cursor->richSource);
+ free(cursor->source);
+ free(cursor->mask);
+ free(cursor);
+ }
+
+}
+
+/* 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;
+ CARD32 background;
+ char *back=(char*)&background;
+ unsigned char bit;
+
+ cursor->source=(unsigned char*)calloc(w,cursor->height);
+
+ 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;
+ CARD32 background,foreground;
+ char *back=(char*)&background,*fore=(char*)&foreground;
+ unsigned char *cp;
+ unsigned char bit;
+
+ cp=cursor->richSource=(unsigned char*)calloc(cursor->width*bpp,cursor->height);
+
+ 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);
+}
+
+void MakeSoftCursor(rfbClientPtr cl, rfbCursorPtr cursor)
+{
+ int w = (cursor->width+7)/8;
+ int bpp = cl->format.bitsPerPixel/8;
+ int sbpp= cl->screen->rfbServerFormat.bitsPerPixel/8;
+ unsigned char *cp, *sp, *translatedCursor;
+ int state; /* 0 = transparent, 1 otherwise */
+ CARD8 *counter;
+ unsigned char bit;
+ int i,j;
+
+ if ((!cursor) || (cl->softSource)) {
+ cl->softSourceLen = 0;
+ return;
+ }
+
+ if (!cursor->richSource)
+ MakeRichCursorFromXCursor(cl->screen, cursor);
+
+ sp = malloc(cursor->width*bpp*cursor->height);
+
+ (*cl->translateFn)(cl->translateLookupTable,
+ &(cl->screen->rfbServerFormat),
+ &cl->format, cursor->richSource,
+ sp, cursor->width*sbpp,
+ cursor->width, cursor->height);
+
+ translatedCursor = sp;
+ cp=cl->softSource=(unsigned char*)calloc(cursor->width*(bpp+2),cursor->height);
+
+ state = 0;
+ counter = cp++;
+ *counter = 0;
+
+ for(j=0;j<cursor->height;j++)
+ for(i=0,bit=0x80;i<cursor->width;i++,bit=(bit&1)?0x80:bit>>1)
+ if(cursor->mask[j*w+i/8]&bit) {
+ if (state) {
+ memcpy(cp,sp,bpp);
+ cp += bpp;
+ sp += bpp;
+ (*counter)++;
+ if (*counter == 255) {
+ state = 0;
+ counter = cp++;
+ *counter = 0;
+ }
+ }
+ else {
+ state = 1;
+ counter = cp++;
+ *counter = 1;
+ memcpy(cp,sp,bpp);
+ cp += bpp;
+ sp += bpp;
+ }
+ }
+ else {
+ if (!state) {
+ (*counter)++;
+ if (*counter == 255) {
+ state = 1;
+ counter = cp++;
+ *counter = 0;
+ }
+ }
+ else {
+ state = 0;
+ counter = cp++;
+ *counter = 1;
+ }
+ sp += bpp;
+ }
+
+ free(translatedCursor);
+ cl->softSourceLen = cp - cl->softSource;
+}
+
+
+/* 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;
+ 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++)
+ memcpy(s->underCursorBuffer+j*x2*bpp,
+ s->frameBuffer+(y1+j)*rowstride+x1*bpp,
+ x2*bpp);
+
+ 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);
+
+
+ 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');
+ }
+}
+
+extern void rfbSetCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr c,Bool freeOld)
+{
+ LOCK(rfbScreen->cursorMutex);
+ while(rfbScreen->cursorIsDrawn) {
+ UNLOCK(rfbScreen->cursorMutex);
+ rfbUndrawCursor(rfbScreen);
+ LOCK(rfbScreen->cursorMutex);
+ }
+
+ if(freeOld && rfbScreen->cursor)
+ rfbFreeCursor(rfbScreen->cursor);
+
+ rfbScreen->cursor = c;
+
+ UNLOCK(rfbScreen->cursorMutex);
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-12 03:56:31 +0000