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tkBrush <- function(mat,hscale=1.75,vscale=1.75,wait=TRUE,...){
if( !requireNamespace('tkrplot', quietly = TRUE) ) stop('This function depends on the tkrplot package being available')
first <- TRUE
bp <- FALSE
cols <- character(0)
colhist <- function(x,...){
tmp <- hist(x,plot=F)
br <- tmp$breaks
w <- as.numeric(cut(x,br,include.lowest=TRUE))
sy <- unlist(lapply(tmp$counts,function(x)seq(length=x)))
my <- max(sy)
sy <- sy/my
my <- 1/my
sy <- sy[order(order(x))]
tmp.usr <- par('usr'); on.exit(par(usr=tmp.usr))
par(usr=c(tmp.usr[1:2],0,1.5))
rect(br[w], sy-my, br[w+1], sy, col=cols, border=NA)
rect(br[-length(br)], 0, br[-1], tmp$counts*my)
if(first){
# tmp <- cnvrt.coords((br[w]+br[w+1])/2,sy-my/2,'usr')$tdev
tmp <- list(
x=grconvertX((br[w]+br[w+1])/2, to='ndc'),
y=grconvertY( sy-my/2, to='ndc')
)
dx <<- c(dx,tmp$x)
dy <<- c(dy,tmp$y)
di <<- c(di,seq(along=tmp$x))
}
}
pcols <- rep('black',nrow(mat))
tcols <- rep(NA,nrow(mat))
ppch <- rep(1,nrow(mat))
tpch <- rep(NA,nrow(mat))
dx <- dy <- di <- numeric(0)
rx <- ry <- 0.5
rw <- rh <- 0.05
epch<-tcltk::tclVar(16)
ecol<-tcltk::tclVar('red')
devlims <- c(0.05,0.95,0.05,0.95)
replot <- function(){
if(first){
cols <<- pcols
pairs(mat, #upper.panel=NULL,
panel=function(x,y,...){
points(x,y,...)
# tmp <- cnvrt.coords(x,y,'usr')$tdev
tmp <- list(
x=grconvertX(x,to='ndc'),
y=grconvertY(y,to='ndc') )
dx <<- c(dx,tmp$x)
dy <<- c(dy,tmp$y)
di <<- c(di,seq(tmp$x))
},
diag.panel=colhist)
first <<- FALSE
} else {
cols <<- ifelse(is.na(tcols),pcols,tcols)
pairs(mat, #upper.panel=NULL,
diag.panel=colhist,
pch=ifelse(is.na(tpch),ppch,tpch),
col=ifelse(is.na(tcols),pcols,tcols))
par(fig=c(0,1,0,1),plt=c(0,1,0,1),usr=c(0,1,0,1),xpd=TRUE)
rect(rx-rw,ry,rx,ry+rh,border='green')
}
}
tt <- tcltk::tktoplevel()
tcltk::tkwm.title(tt,"Tk Brush")
img <- tkrplot::tkrplot(tt, replot, vscale=vscale, hscale=hscale)
tcltk::tkpack(img,side='left')
tcltk::tkpack( tcltk::tklabel(tt,text='pch:'),side='top')
tcltk::tkpack(tcltk::tkentry(tt,textvariable=epch),side='top')
tcltk::tkpack( tcltk::tklabel(tt,text='Color:'),side='top')
tcltk::tkpack( tcltk::tkentry(tt,textvariable=ecol),side='top')
tcltk::tkpack( tcltk::tkbutton(tt, text='Quit', command=function()tcltk::tkdestroy(tt)),
side='bottom')
iw <- as.numeric(tcltk::tcl('image','width',tcltk::tkcget(img,'-image')))
ih <- as.numeric(tcltk::tcl('image','height',tcltk::tkcget(img,'-image')))
mm <- function(x,y){
tx <- (as.numeric(x)-1)/iw
ty <- 1-(as.numeric(y)-1)/ih
if(tx-rw < devlims[1]) tx <- devlims[1]+rw
if(tx > devlims[2]) tx <- devlims[2]
if(ty < devlims[3]) ty <- devlims[3]
if(ty+rh > devlims[4]) ty <- devlims[4] - rh
rx <<- tx
ry <<- ty
tmp <- di[ dx >= rx-rw & dx <= rx & dy >= ry & dy <= ry+rh ]
tmpc <- rep(NA,nrow(mat))
tmpcol <- as.character(tcltk::tclvalue(ecol))
if( !( tmpcol %in% colors() ) ) tmpcol <- 'black'
tmpc[tmp] <- tmpcol
tcols <<- tmpc
tmpp <- rep(NA,nrow(mat))
tmppch <- as.numeric(tcltk::tclvalue(epch))
if(is.na(tmppch)) tmppch <- as.character(tcltk::tclvalue(epch))
tmpp[tmp] <- tmppch
tpch <<- tmpp
if(bp){
ppch <<- ifelse(is.na(tpch),ppch,tpch)
pcols <<- ifelse(is.na(tcols),pcols,tcols)
}
tkrplot::tkrreplot(img)
}
mmm <- function(){
tmp <- di[ dx >= rx-rw & dx <= rx & dy >= ry & dy <= ry+rh ]
tmpc <- rep(NA,nrow(mat))
tmpcol <- as.character(tcltk::tclvalue(ecol))
if( !( tmpcol %in% colors() ) ) tmpcol <- 'black'
tmpc[tmp] <- tmpcol
tcols <<- tmpc
tmpp <- rep(NA,nrow(mat))
tmppch <- as.numeric(tcltk::tclvalue(epch))
if(is.na(tmppch)) tmppch <- as.character(tcltk::tclvalue(epch))
tmpp[tmp] <- tmppch
tpch <<- tmpp
if(bp){
ppch <<- ifelse(is.na(tpch),ppch,tpch)
pcols <<- ifelse(is.na(tcols),pcols,tcols)
}
tkrplot::tkrreplot(img)
}
tcltk::tkbind(img, '<Motion>', mm)
tcltk::tkbind(img, '<ButtonPress-1>', function() {bp<<-TRUE;mmm()})
tcltk::tkbind(img, '<ButtonRelease-1>', function() bp<<-FALSE)
tcltk::tkbind(tt, '<Key-Up>',function(){rh <<- rh+0.01;mmm()})
tcltk::tkbind(tt, '<Key-Down>',function(){rh <<- rh-0.01;mmm()})
tcltk::tkbind(tt, '<Key-Left>',function(){rw <<- rw+0.01;mmm()})
tcltk::tkbind(tt, '<Key-Right>',function(){rw <<- rw-0.01;mmm()})
if(wait){
tcltk::tkwait.window(tt)
return(list(col=pcols, pch=ppch))
} else {
return(invisible(NULL))
}
}
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