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libtdevnc/vncterm/VNConsole.c

498 lines
12 KiB

#include <stdarg.h>
#include <rfb/keysym.h>
#include "VNConsole.h"
#define DEBUG(x)
unsigned char colourMap16[16*3]={
/* 0 black #000000 */ 0x00,0x00,0x00,
/* 1 maroon #800000 */ 0x80,0x00,0x00,
/* 2 green #008000 */ 0x00,0x80,0x00,
/* 3 khaki #808000 */ 0x80,0x80,0x00,
/* 4 navy #000080 */ 0x00,0x00,0x80,
/* 5 purple #800080 */ 0x80,0x00,0x80,
/* 6 aqua-green #008080 */ 0x00,0x80,0x80,
/* 7 light grey #c0c0c0 */ 0xc0,0xc0,0xc0,
/* 8 dark grey #808080 */ 0x80,0x80,0x80,
/* 9 red #ff0000 */ 0xff,0x00,0x00,
/* a light green #00ff00 */ 0x00,0xff,0x00,
/* b yellow #ffff00 */ 0xff,0xff,0x00,
/* c blue #0000ff */ 0x00,0x00,0xff,
/* d pink #ff00ff */ 0xff,0x00,0xff,
/* e light blue #00ffff */ 0x00,0xff,0xff,
/* f white #ffffff */ 0xff,0xff,0xff
};
void MakeColourMap16(vncConsolePtr c)
{
rfbColourMap* colourMap=&(c->screen->colourMap);
if(colourMap->count)
free(colourMap->data.bytes);
colourMap->data.bytes=malloc(16*3);
memcpy(colourMap->data.bytes,colourMap16,16*3);
colourMap->count=16;
colourMap->is16=FALSE;
c->screen->serverFormat.trueColour=FALSE;
}
void vcDrawOrHideCursor(vncConsolePtr c)
{
int i,j,w=c->screen->paddedWidthInBytes;
char *b=c->screen->frameBuffer+c->y*c->cHeight*w+c->x*c->cWidth;
for(j=c->cy1;j<c->cy2;j++)
for(i=c->cx1;i<c->cx2;i++)
b[j*w+i]^=0x0f;
rfbMarkRectAsModified(c->screen,
c->x*c->cWidth+c->cx1,c->y*c->cHeight+c->cy1,
c->x*c->cWidth+c->cx2,c->y*c->cHeight+c->cy2);
c->cursorIsDrawn=c->cursorIsDrawn?FALSE:TRUE;
}
void vcDrawCursor(vncConsolePtr c)
{
if(c->cursorActive && c->y<c->height && c->x<c->width) {
/* rfbLog("DrawCursor: %d,%d\n",c->x,c->y); */
vcDrawOrHideCursor(c);
}
}
void vcHideCursor(vncConsolePtr c)
{
if(c->currentlyMarking)
vcUnmark(c);
vcDrawOrHideCursor(c);
}
void vcMakeSureCursorIsDrawn(rfbClientPtr cl)
{
vncConsolePtr c=(vncConsolePtr)cl->screen->screenData;
if(!c->dontDrawCursor)
vcDrawCursor(c);
}
vncConsolePtr vcGetConsole(int *argc,char **argv,
int width,int height,rfbFontDataPtr font
#ifdef USE_ATTRIBUTE_BUFFER
,rfbBool withAttributes
#endif
)
{
vncConsolePtr c=(vncConsolePtr)malloc(sizeof(vncConsole));
c->font=font;
c->width=width;
c->height=height;
c->screenBuffer=(char*)malloc(width*height);
memset(c->screenBuffer,' ',width*height);
#ifdef USE_ATTRIBUTE_BUFFER
if(withAttributes) {
c->attributeBuffer=(char*)malloc(width*height);
memset(c->attributeBuffer,0x07,width*height);
} else
c->attributeBuffer=NULL;
#endif
c->x=0;
c->y=0;
c->wrapBottomToTop=FALSE;
c->cursorActive=TRUE;
c->cursorIsDrawn=FALSE;
c->dontDrawCursor=FALSE;
c->inputBuffer=(char*)malloc(1024);
c->inputSize=1024;
c->inputCount=0;
c->selection=0;
c->selectTimeOut=40000; /* 40 ms */
c->doEcho=TRUE;
c->wasRightButtonDown=FALSE;
c->currentlyMarking=FALSE;
rfbWholeFontBBox(font,&c->xhot,&c->cHeight,&c->cWidth,&c->yhot);
c->cWidth-=c->xhot;
c->cHeight=-c->cHeight-c->yhot;
/* text cursor */
c->cx1=c->cWidth/8;
c->cx2=c->cWidth*7/8;
c->cy2=c->cHeight-1-c->yhot+c->cHeight/16;
if(c->cy2>=c->cHeight)
c->cy2=c->cHeight-1;
c->cy1=c->cy2-c->cHeight/8;
if(c->cy1<0)
c->cy2=0;
c->screen=
rfbGetScreen(argc,argv,c->cWidth*c->width,c->cHeight*c->height,8,1,1);
c->screen->screenData=(void*)c;
c->screen->displayHook=vcMakeSureCursorIsDrawn;
c->screen->frameBuffer=
(char*)malloc(c->screen->width*c->screen->height);
memset(c->screen->frameBuffer,c->backColour,
c->screen->width*c->screen->height);
c->screen->kbdAddEvent=vcKbdAddEventProc;
c->screen->ptrAddEvent=vcPtrAddEventProc;
c->screen->setXCutText=vcSetXCutTextProc;
MakeColourMap16(c);
c->foreColour=0x7;
c->backColour=0;
rfbInitServer(c->screen);
return(c);
}
#include <rfb/rfbregion.h>
/* before using this function, hide the cursor */
void vcScroll(vncConsolePtr c,int lineCount)
{
int y1,y2;
rfbScreenInfoPtr s=c->screen;
if(lineCount==0)
return;
/* rfbLog("begin scroll\n"); */
vcHideCursor(c);
c->dontDrawCursor=TRUE;
if(lineCount>=c->height || lineCount<=-c->height) {
y1=0; y2=s->height;
} else if(lineCount>0) {
y1=s->height-lineCount*c->cHeight; y2=s->height;
rfbDoCopyRect(s,0,0,s->width,y1,0,-lineCount*c->cHeight);
memmove(c->screenBuffer,
c->screenBuffer+(c->height-lineCount)*c->width,
(c->height-lineCount)*c->width);
#ifdef USE_ATTRIBUTE_BUFFER
if(c->attributeBuffer)
memmove(c->attributeBuffer,
c->attributeBuffer+(c->height-lineCount)*c->width,
(c->height-lineCount)*c->width);
#endif
} else {
y1=0; y2=-lineCount*c->cHeight;
rfbDoCopyRect(s,0,y2,s->width,s->height,0,-lineCount*c->cHeight);
memmove(c->screenBuffer-lineCount*c->width,
c->screenBuffer,
(c->height+lineCount)*c->width);
#ifdef USE_ATTRIBUTE_BUFFER
if(c->attributeBuffer)
memmove(c->attributeBuffer-lineCount*c->width,
c->attributeBuffer,
(c->height+lineCount)*c->width);
#endif
}
c->dontDrawCursor=FALSE;
memset(s->frameBuffer+y1*s->width,c->backColour,(y2-y1)*s->width);
rfbMarkRectAsModified(s,0,y1-c->cHeight,s->width,y2);
memset(c->screenBuffer+y1/c->cHeight*c->width,' ',
(y2-y1)/c->cHeight*c->width);
#ifdef USE_ATTRIBUTE_BUFFER
if(c->attributeBuffer)
memset(c->attributeBuffer+y1/c->cHeight*c->width,0x07,
(y2-y1)/c->cHeight*c->width);
#endif
/* rfbLog("end scroll\n"); */
}
void vcCheckCoordinates(vncConsolePtr c)
{
if(c->x>=c->width) {
c->x=0;
c->y++;
}
if(c->y>=c->height) {
if(c->wrapBottomToTop)
c->y=0;
else {
vcScroll(c,c->y+1-c->height);
c->y=c->height-1;
}
}
}
void vcPutChar(vncConsolePtr c,unsigned char ch)
{
#ifdef USE_ATTRIBUTE_BUFFER
if(c->attributeBuffer) {
unsigned char colour=c->attributeBuffer[c->x+c->y*c->width];
vcPutCharColour(c,ch,colour&0x7,colour>>4);
} else
#endif
vcPutCharColour(c,ch,c->foreColour,c->backColour);
}
void vcPutCharColour(vncConsolePtr c,unsigned char ch,unsigned char foreColour,unsigned char backColour)
{
rfbScreenInfoPtr s=c->screen;
int j,x,y;
vcHideCursor(c);
if(ch<' ') {
switch(ch) {
case 7:
case 13:
break;
case 8: /* BackSpace */
if(c->x>0) {
c->x--;
vcPutChar(c,' ');
c->x--;
}
break;
case 10: /* return */
c->x=0;
c->y++;
vcCheckCoordinates(c);
break;
case 9: /* tabulator */
do {
vcPutChar(c,' ');
} while(c->x%8);
break;
default:
rfbLog("putchar of unknown character: %c(%d).\n",ch,ch);
vcPutChar(c,' ');
}
} else {
#ifdef USE_ATTRIBUTE_BUFFER
if(c->attributeBuffer)
c->attributeBuffer[c->x+c->y*c->width]=foreColour|(backColour<<4);
#endif
x=c->x*c->cWidth;
y=c->y*c->cHeight;
for(j=y+c->cHeight-1;j>=y;j--)
memset(s->frameBuffer+j*s->width+x,backColour,c->cWidth);
rfbDrawChar(s,c->font,
x-c->xhot+(c->cWidth-rfbWidthOfChar(c->font,ch))/2,
y+c->cHeight-c->yhot-1,
ch,foreColour);
c->screenBuffer[c->y*c->width+c->x]=ch;
c->x++;
rfbMarkRectAsModified(s,x,y-c->cHeight+1,x+c->cWidth,y+c->cHeight+1);
vcCheckCoordinates(c);
}
}
void vcPrint(vncConsolePtr c,unsigned char* str)
{
while(*str) {
vcPutChar(c,*str);
str++;
}
}
void vcPrintColour(vncConsolePtr c,unsigned char* str,unsigned char foreColour,unsigned char backColour)
{
while(*str) {
vcPutCharColour(c,*str,foreColour,backColour);
str++;
}
}
void vcPrintF(vncConsolePtr c,char* format,...)
{
va_list args;
char buf[4096];
va_start(args, format);
vsprintf(buf, format, args);
vcPrint(c,(unsigned char*)buf);
va_end(args);
}
void vcPrintFColour(vncConsolePtr c,unsigned char foreColour,unsigned char backColour,char* format,...)
{
va_list args;
char buf[4096];
va_start(args, format);
vsprintf(buf, format, args);
vcPrintColour(c,(unsigned char*)buf,foreColour,backColour);
va_end(args);
}
char vcGetCh(vncConsolePtr c)
{
if(c->inputCount>0) {
char ch;
ch=c->inputBuffer[0];
c->inputCount--;
if(c->inputCount>0)
memmove(c->inputBuffer,c->inputBuffer+1,c->inputCount);
return(ch);
} else
return(0);
}
char vcGetChar(vncConsolePtr c)
{
while(rfbIsActive(c->screen) && c->inputCount==0)
vcProcessEvents(c);
return(vcGetCh(c));
}
char *vcGetString(vncConsolePtr c,char *buffer,int bufferSize)
{
char *bufferBackup=c->inputBuffer;
int i,count=bufferSize-1;
if(count>c->inputCount)
count=c->inputCount;
for(i=1;i<count && bufferBackup[i-1]!='\n';i++);
if(i<count || i==bufferSize-1) {
memcpy(buffer,bufferBackup,i);
buffer[i+1]=0;
c->inputCount-=i;
memmove(bufferBackup,bufferBackup+i+2,c->inputCount);
return(buffer);
}
memcpy(buffer,bufferBackup,c->inputCount);
count=c->inputSize;
c->inputSize=bufferSize;
c->inputBuffer=buffer;
while(rfbIsActive(c->screen)
&& c->inputCount<bufferSize-1 && buffer[c->inputCount-1]!='\n')
vcProcessEvents(c);
buffer[c->inputCount]=0;
c->inputBuffer=bufferBackup;
c->inputSize=count;
c->inputCount=0;
return(buffer);
}
void vcKbdAddEventProc(rfbBool down,rfbKeySym keySym,rfbClientPtr cl)
{
vncConsolePtr c=(vncConsolePtr)cl->screen->screenData;
if(down) {
if(c->inputCount<c->inputSize) {
if(keySym<0 || keySym>0xff) {
if(keySym==XK_Return) keySym='\n';
else if(keySym==XK_BackSpace) keySym=8;
else if(keySym==XK_Tab) keySym=9;
else keySym=0;
}
if(keySym>0) {
if(keySym==8) {
if(c->inputCount>0)
c->inputCount--;
} else
c->inputBuffer[c->inputCount++]=(char)keySym;
if(c->doEcho)
vcPutChar(c,(unsigned char)keySym);
}
}
}
}
void vcPtrAddEventProc(int buttonMask,int x,int y,rfbClientPtr cl)
{
vncConsolePtr c=(vncConsolePtr)cl->screen->screenData;
if(c->wasRightButtonDown) {
if((buttonMask&4)==0) {
if(c->selection) {
char* s;
for(s=c->selection;*s;s++) {
c->screen->kbdAddEvent(1,*s,cl);
c->screen->kbdAddEvent(0,*s,cl);
}
}
c->wasRightButtonDown=0;
}
} else if(buttonMask&4)
c->wasRightButtonDown=1;
if(buttonMask&1) {
int cx=x/c->cWidth,cy=y/c->cHeight,pos;
if(cx<0) cx=0; else if(cx>=c->width) cx=c->width-1;
if(cy<0) cy=0; else if(cy>=c->height) cy=c->height-1;
pos=cy*c->width+cx;
/* mark */
if(!c->currentlyMarking) {
c->currentlyMarking=TRUE;
c->markStart=pos;
c->markEnd=pos;
vcToggleMarkCell(c,pos);
} else {
DEBUG(rfbLog("markStart: %d, markEnd: %d, pos: %d\n",
c->markStart,c->markEnd,pos));
if(c->markEnd!=pos) {
if(c->markEnd<pos) {
cx=c->markEnd; cy=pos;
} else {
cx=pos; cy=c->markEnd;
}
if(cx<c->markStart) {
if(cy<c->markStart)
cy--;
} else
cx++;
while(cx<=cy) {
vcToggleMarkCell(c,cx);
cx++;
}
c->markEnd=pos;
}
}
} else if(c->currentlyMarking) {
int i,j;
if(c->markStart<c->markEnd) {
i=c->markStart; j=c->markEnd+1;
} else {
i=c->markEnd; j=c->markStart;
}
if(c->selection) free(c->selection);
c->selection=(char*)malloc(j-i+1);
memcpy(c->selection,c->screenBuffer+i,j-i);
c->selection[j-i]=0;
vcUnmark(c);
rfbGotXCutText(c->screen,c->selection,j-i);
}
rfbDefaultPtrAddEvent(buttonMask,x,y,cl);
}
void vcSetXCutTextProc(char* str,int len, struct _rfbClientRec* cl)
{
vncConsolePtr c=(vncConsolePtr)cl->screen->screenData;
if(c->selection) free(c->selection);
c->selection=(char*)malloc(len+1);
memcpy(c->selection,str,len);
c->selection[len]=0;
}
void vcToggleMarkCell(vncConsolePtr c,int pos)
{
int x=(pos%c->width)*c->cWidth,
y=(pos/c->width)*c->cHeight;
int i,j;
rfbScreenInfoPtr s=c->screen;
char *b=s->frameBuffer+y*s->width+x;
for(j=0;j<c->cHeight;j++)
for(i=0;i<c->cWidth;i++)
b[j*s->width+i]^=0x0f;
rfbMarkRectAsModified(c->screen,x,y,x+c->cWidth,y+c->cHeight);
}
void vcUnmark(vncConsolePtr c)
{
int i,j;
c->currentlyMarking=FALSE;
if(c->markStart<c->markEnd) {
i=c->markStart; j=c->markEnd+1;
} else {
i=c->markEnd; j=c->markStart;
}
for(;i<j;i++)
vcToggleMarkCell(c,i);
}
void vcProcessEvents(vncConsolePtr c)
{
rfbProcessEvents(c->screen,c->selectTimeOut);
}