我创建了一个进度条来密切关注某些 R 脚本的执行情况。我想在栏中插入一个自定义图标,而不是默认的“Tk”图标。我可以使用 .ico 文件和以下命令在 Windows 上执行此操作
tcl('wm', 'iconbitmap', .win, 'Icon.ico')
但我对如何在 Mac OSX 和 Linux 中做同样的事情感到茫然。显然,.ico 格式不起作用,但 .png、.jpg、.bmp、.xbm 或 .xpm 也不起作用。关于我如何继续进行的任何建议?下面附上示例图像和进度条码:-
示例图片 http://tinypic.com/r/jt8efn/6 - http://tinypic.com/r/jt8efn/6
tkProgressBar2 <- function (title = 'Test progress bar', label = '', min = 0, max = 100, initial = 0, width = 300, userfn='helvetica', backg='white') {
useText <- FALSE
have_ttk <- as.character(tcl('info', 'tclversion')) >= '8.5'
if (!have_ttk && as.character(tclRequire('PBar')) == 'FALSE') useText <- TRUE
.win <<- tktoplevel(background=backg)
tkfocus()
tcl('wm', 'geometry', .win, '500x100+450+350')
tcl('wm', 'iconbitmap', .win, '@Icon.xbm')
.val <- initial
.killed <- FALSE
tkwm.geometry(.win, sprintf('%dx80', width + 40))
tkwm.title(.win, title)
fn <- tkfont.create(family = userfn, size = 12)
if (useText) {
.lab <- tklabel(.win, text = label, font = fn, padx = 0, background=backg)
tkpack(.lab, side = 'left')
fn2 <- tkfont.create(family = userfn, size = 16)
.vlab <- tklabel(.win, text = '0%', font = fn2, padx = 20, background=backg)
tkpack(.vlab, side = 'right')
up <- function(value) {
if (!is.finite(value) || value < min || value > max) return()
.val <<- value
tkconfigure(.vlab, text = sprintf('%d%%', round(100 * (value - min)/(max - min))))
}
} else {
.lab <- tklabel(.win, text = label, font = fn, pady = 0, background=backg)
.tkval <- tclVar(0)
tkpack(.lab, side = 'top')
tkpack(tklabel(.win, text = '', font = fn, background=backg), side = 'bottom')
pBar <- if (have_ttk)
ttkprogressbar(.win, length = width, variable = .tkval) else
tkwidget(.win, 'ProgressBar', width = width, variable = .tkval)
tkpack(pBar, side = 'bottom')
up <- function(value) {
if (!is.finite(value) || value < min || value > max) return()
.val <<- value
tclvalue(.tkval) <<- 100 * (value - min)/(max - min)
}
}
getVal <- function() .val
kill <- function() if (!.killed) {
tkdestroy(.win)
.killed <<- TRUE
}
title <- function(title) tkwm.title(.win, title)
lab <- function(label) tkconfigure(.lab, text = label)
tkbind(.win, '<Destroy>', function() stop())
up(initial)
structure(list(getVal = getVal, up = up, title = title, label = lab, kill = kill), class = 'tkProgressBar')
}
pb <- tkProgressBar2(title='Performing k-Means clustering', label='Some information in %', min=0, max=100, initial=0, width=400, userfn='verdana', backg='white')