+++ /dev/null
-/*
- * 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>
-#include <rfb/rfbregion.h>
-#include "private.h"
-
-void rfbScaledScreenUpdate(rfbScreenInfoPtr screen, int x1, int y1, int x2, int y2);
-
-/*
- * Send cursor shape either in X-style format or in client pixel format.
- */
-
-rfbBool
-rfbSendCursorShape(rfbClientPtr cl)
-{
- rfbCursorPtr pCursor;
- rfbFramebufferUpdateRectHeader rect;
- rfbXCursorColors colors;
- int saved_ublen;
- int bitmapRowBytes, maskBytes, dataBytes;
- int i, j;
- uint8_t *bitmapData;
- uint8_t bitmapByte;
-
- /* TODO: scale the cursor data to the correct size */
-
- pCursor = cl->screen->getCursorPtr(cl);
- /*if(!pCursor) return TRUE;*/
-
- if (cl->useRichCursorEncoding) {
- if(pCursor && !pCursor->richSource)
- rfbMakeRichCursorFromXCursor(cl->screen,pCursor);
- rect.encoding = Swap32IfLE(rfbEncodingRichCursor);
- } else {
- if(pCursor && !pCursor->source)
- rfbMakeXCursorFromRichCursor(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;
-
- 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->serverFormat.bitsPerPixel/8,
- bpp2=cl->format.bitsPerPixel/8;
- (*cl->translateFn)(cl->translateLookupTable,
- &(cl->screen->serverFormat),
- &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[]. */
- rfbStatRecordEncodingSent(cl, (cl->useRichCursorEncoding ? rfbEncodingRichCursor : rfbEncodingXCursor),
- sz_rfbFramebufferUpdateRectHeader + (cl->ublen - saved_ublen), sz_rfbFramebufferUpdateRectHeader + (cl->ublen - saved_ublen));
-
- 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;
-
- rfbStatRecordEncodingSent(cl, rfbEncodingPointerPos, sz_rfbFramebufferUpdateRectHeader, sz_rfbFramebufferUpdateRectHeader);
-
- 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);
-}
-
-/* this function dithers the alpha using Floyd-Steinberg */
-
-char* rfbMakeMaskFromAlphaSource(int width,int height,unsigned char* alphaSource)
-{
- int* error=(int*)calloc(sizeof(int),width);
- int i,j,currentError=0,maskStride=(width+7)/8;
- unsigned char* result=(unsigned char*)calloc(maskStride,height);
-
- for(j=0;j<height;j++)
- for(i=0;i<width;i++) {
- int right,middle,left;
- currentError+=alphaSource[i+width*j]+error[i];
-
- if(currentError<0x80) {
- /* set to transparent */
- /* alpha was treated as 0 */
- } else {
- /* set to solid */
- result[i/8+j*maskStride]|=(0x100>>(i&7));
- /* alpha was treated as 0xff */
- currentError-=0xff;
- }
- /* propagate to next row */
- right=currentError/16;
- middle=currentError*5/16;
- left=currentError*3/16;
- currentError-=right+middle+left;
- error[i]=right;
- if(i>0) {
- error[i-1]=middle;
- if(i>1)
- error[i-2]=left;
- }
- }
- free(error);
- return (char *) result;
-}
-
-void rfbFreeCursor(rfbCursorPtr cursor)
-{
- if(cursor) {
- if(cursor->cleanupRichSource && cursor->richSource)
- free(cursor->richSource);
- if(cursor->cleanupRichSource && cursor->alphaSource)
- free(cursor->alphaSource);
- 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=NULL;
- cursor->alphaSource=NULL;
- }
- }
-
-}
-
-/* background and foregroud colour have to be set beforehand */
-void rfbMakeXCursorFromRichCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr cursor)
-{
- rfbPixelFormat* format=&rfbScreen->serverFormat;
- 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;
- int interp = 0, db = 0;
-
- 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;
- }
-
- /* all zeros means we should interpolate to black+white ourselves */
- if (!cursor->backRed && !cursor->backGreen && !cursor->backBlue &&
- !cursor->foreRed && !cursor->foreGreen && !cursor->foreBlue) {
- if (format->trueColour && (bpp == 1 || bpp == 2 || bpp == 4)) {
- interp = 1;
- cursor->foreRed = cursor->foreGreen = cursor->foreBlue = 0xffff;
- }
- }
-
- background = ((format->redMax * cursor->backRed) / 0xffff) << format->redShift |
- ((format->greenMax * cursor->backGreen) / 0xffff) << format->greenShift |
- ((format->blueMax * cursor->backBlue) / 0xffff) << format->blueShift;
-
-#define SETRGB(u) \
- r = (255 * (((format->redMax << format->redShift) & (*u)) >> format->redShift)) / format->redMax; \
- g = (255 * (((format->greenMax << format->greenShift) & (*u)) >> format->greenShift)) / format->greenMax; \
- b = (255 * (((format->blueMax << format->blueShift) & (*u)) >> format->blueShift)) / format->blueMax;
-
- if (db) fprintf(stderr, "interp: %d\n", interp);
-
- for(j=0;j<cursor->height;j++) {
- for(i=0,bit=0x80;i<cursor->width;i++,bit=(bit&1)?0x80:bit>>1) {
- if (interp) {
- int r = 0, g = 0, b = 0, grey;
- char *p = cursor->richSource+j*width+i*bpp;
- if (bpp == 1) {
- unsigned char* uc = (unsigned char*) p;
- SETRGB(uc);
- } else if (bpp == 2) {
- unsigned short* us = (unsigned short*) p;
- SETRGB(us);
- } else if (bpp == 4) {
- unsigned int* ui = (unsigned int*) p;
- SETRGB(ui);
- }
- grey = (r + g + b) / 3;
- if (grey >= 128) {
- cursor->source[j*w+i/8]|=bit;
- if (db) fprintf(stderr, "1");
- } else {
- if (db) fprintf(stderr, "0");
- }
-
- } else if(memcmp(cursor->richSource+j*width+i*bpp, back, bpp)) {
- cursor->source[j*w+i/8]|=bit;
- }
- }
- if (db) fprintf(stderr, "\n");
- }
-}
-
-void rfbMakeRichCursorFromXCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr cursor)
-{
- rfbPixelFormat* format=&rfbScreen->serverFormat;
- 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->width;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 rfbHideCursor(rfbClientPtr cl)
-{
- rfbScreenInfoPtr s=cl->screen;
- rfbCursorPtr c=s->cursor;
- int j,x1,x2,y1,y2,bpp=s->serverFormat.bitsPerPixel/8,
- rowstride=s->paddedWidthInBytes;
- LOCK(s->cursorMutex);
- if(!c) {
- UNLOCK(s->cursorMutex);
- return;
- }
-
- /* restore what is under the cursor */
- x1=cl->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=cl->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);
-
- /* Copy to all scaled versions */
- rfbScaledScreenUpdate(s, x1, y1, x1+x2, y1+y2);
-
- UNLOCK(s->cursorMutex);
-}
-
-void rfbShowCursor(rfbClientPtr cl)
-{
- rfbScreenInfoPtr s=cl->screen;
- rfbCursorPtr c=s->cursor;
- int i,j,x1,x2,y1,y2,i1,j1,bpp=s->serverFormat.bitsPerPixel/8,
- rowstride=s->paddedWidthInBytes,
- bufSize,w;
- rfbBool wasChanged=FALSE;
-
- if(!c) return;
- LOCK(s->cursorMutex);
-
- 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=cl->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=cl->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)
- rfbMakeRichCursorFromXCursor(s,c);
-
- if (c->alphaSource) {
- int rmax, rshift;
- int gmax, gshift;
- int bmax, bshift;
- int amax = 255; /* alphaSource is always 8bits of info per pixel */
- unsigned int rmask, gmask, bmask;
-
- rmax = s->serverFormat.redMax;
- gmax = s->serverFormat.greenMax;
- bmax = s->serverFormat.blueMax;
- rshift = s->serverFormat.redShift;
- gshift = s->serverFormat.greenShift;
- bshift = s->serverFormat.blueShift;
-
- rmask = (rmax << rshift);
- gmask = (gmax << gshift);
- bmask = (bmax << bshift);
-
- for(j=0;j<y2;j++) {
- for(i=0;i<x2;i++) {
- /*
- * we loop over the whole cursor ignoring c->mask[],
- * using the extracted alpha value instead.
- */
- char *dest;
- unsigned char *src, *aptr;
- unsigned int val, dval, sval;
- int rdst, gdst, bdst; /* fb RGB */
- int asrc, rsrc, gsrc, bsrc; /* rich source ARGB */
-
- dest = s->frameBuffer + (j+y1)*rowstride + (i+x1)*bpp;
- src = c->richSource + (j+j1)*c->width*bpp + (i+i1)*bpp;
- aptr = c->alphaSource + (j+j1)*c->width + (i+i1);
-
- asrc = *aptr;
- if (!asrc) {
- continue;
- }
-
- if (bpp == 1) {
- dval = *((unsigned char*) dest);
- sval = *((unsigned char*) src);
- } else if (bpp == 2) {
- dval = *((unsigned short*) dest);
- sval = *((unsigned short*) src);
- } else if (bpp == 3) {
- unsigned char *dst = (unsigned char *) dest;
- dval = 0;
- dval |= ((*(dst+0)) << 0);
- dval |= ((*(dst+1)) << 8);
- dval |= ((*(dst+2)) << 16);
- sval = 0;
- sval |= ((*(src+0)) << 0);
- sval |= ((*(src+1)) << 8);
- sval |= ((*(src+2)) << 16);
- } else if (bpp == 4) {
- dval = *((unsigned int*) dest);
- sval = *((unsigned int*) src);
- } else {
- continue;
- }
-
- /* extract dest and src RGB */
- rdst = (dval & rmask) >> rshift; /* fb */
- gdst = (dval & gmask) >> gshift;
- bdst = (dval & bmask) >> bshift;
-
- rsrc = (sval & rmask) >> rshift; /* richcursor */
- gsrc = (sval & gmask) >> gshift;
- bsrc = (sval & bmask) >> bshift;
-
- /* blend in fb data. */
- if (! c->alphaPreMultiplied) {
- rsrc = (asrc * rsrc)/amax;
- gsrc = (asrc * gsrc)/amax;
- bsrc = (asrc * bsrc)/amax;
- }
- rdst = rsrc + ((amax - asrc) * rdst)/amax;
- gdst = gsrc + ((amax - asrc) * gdst)/amax;
- bdst = bsrc + ((amax - asrc) * bdst)/amax;
-
- val = 0;
- val |= (rdst << rshift);
- val |= (gdst << gshift);
- val |= (bdst << bshift);
-
- /* insert the cooked pixel into the fb */
- memcpy(dest, &val, bpp);
- }
- }
- } else {
- /* 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);
- }
-
- /* Copy to all scaled versions */
- rfbScaledScreenUpdate(s, x1, y1, x1+x2, y1+y2);
-
- UNLOCK(s->cursorMutex);
-}
-
-/*
- * If enableCursorShapeUpdates is FALSE, and the cursor is hidden, make sure
- * that if the frameBuffer was transmitted with a cursor drawn, then that
- * region gets redrawn.
- */
-
-void rfbRedrawAfterHideCursor(rfbClientPtr cl,sraRegionPtr updateRegion)
-{
- rfbScreenInfoPtr s = cl->screen;
- rfbCursorPtr c = s->cursor;
-
- if(c) {
- int x,y,x2,y2;
-
- x = cl->cursorX-c->xhot;
- y = cl->cursorY-c->yhot;
- x2 = x+c->width;
- y2 = y+c->height;
-
- if(sraClipRect2(&x,&y,&x2,&y2,0,0,s->width,s->height)) {
- sraRegionPtr rect;
- rect = sraRgnCreateRect(x,y,x2,y2);
- if(updateRegion)
- sraRgnOr(updateRegion,rect);
- else
- sraRgnOr(cl->modifiedRegion,rect);
- sraRgnDestroy(rect);
- }
- }
-}
-
-#ifdef DEBUG
-
-static 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');
- }
-}
-
-#endif
-
-void rfbSetCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr c)
-{
- rfbClientIteratorPtr iterator;
- rfbClientPtr cl;
-
- LOCK(rfbScreen->cursorMutex);
-
- if(rfbScreen->cursor) {
- iterator=rfbGetClientIterator(rfbScreen);
- while((cl=rfbClientIteratorNext(iterator)))
- if(!cl->enableCursorShapeUpdates)
- rfbRedrawAfterHideCursor(cl,NULL);
- rfbReleaseClientIterator(iterator);
-
- if(rfbScreen->cursor->cleanup)
- rfbFreeCursor(rfbScreen->cursor);
- }
-
- rfbScreen->cursor = c;
-
- iterator=rfbGetClientIterator(rfbScreen);
- while((cl=rfbClientIteratorNext(iterator))) {
- cl->cursorWasChanged = TRUE;
- if(!cl->enableCursorShapeUpdates)
- rfbRedrawAfterHideCursor(cl,NULL);
- }
- rfbReleaseClientIterator(iterator);
-
- UNLOCK(rfbScreen->cursorMutex);
-}
-
projects / presencevnc / blobdiff