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我想用滑块选择性地控制字体缩放。这可能吗?R中的Reactive CSS属性Shiny
我附加了一个MRE,我相信这证明了我卡在哪里以及我想实现的目标。
if(!require('pacman')) {install.packages("pacman")} # Ensures that pacman is installed for auto-installation
pacman::p_load(shiny, lipsum) # automatically installs and loads packages.
ui <- fluidPage(# Sidebar with a slider input for font size
sidebarLayout(sidebarPanel(
sliderInput("font_size", "Font Size:", min = 1, max = 200, value = 70
)
),
mainPanel(
wellPanel(
id = "textPanel",
style = "overflow-y:scroll; max-height: 50vh; font-size: 70%",
#style = paste0("overflow-y:scroll; max-height: 50vh; font-size: ",
# output$text_size,"70%"),
paste0(lipsum[2:10], collapse = "")))))
# Define server logic
server <- function(input, output) {
output$text_size = renderText({input$font_size})}
# Run the application
shinyApp(ui = ui, server = server)