从 r shiny 的传单中控制 popupImage 的大小 [英] Control the size of popupImage from leaflet in r shiny

问题描述

我很难控制由 popupImage(mapview 包)生成的图像的大小.下面是一个可重现的闪亮示例，其中我有一个带有弹出窗口的标记.当我设置 width = 300 时，弹出窗口正确显示，但我想显示更大的图像.
宽度 = 300

I am having difficulties to control the size of the image resulting from popupImage (mapview package). Below is a reproducible shiny example where I have a single marker with a popup. When I set width = 300, the popup displays correctly, but I would like to display a bigger image.
width = 300

当设置 width = 500 时，弹出窗口显示更大，但其中一部分显示为灰色并添加了滚动条.
width=500.

When setting width = 500, the popup displays larger, but a portion of it is greyed out and a scroll bar is added.
width=500.

如何让 width = 500 正确显示图片?

How can I get width = 500 to display the image correctly?

我弄乱了 css 标签，研究了我在 stackoverflow 上可以找到的所有内容，并检查了 GitHub 文档.

I've messed around with css tags, worked through everything I could find on stackoverflow, and examined the GitHub documents.

library(shiny)
library(leaflet)
library(dplyr)
library(mapview)

img = "https://cdn.sstatic.net/Sites/stackoverflow/img/error-lolcat-problemz.jpg"

ui <- fluidPage(
  titlePanel("example"),
  sidebarLayout(
    sidebarPanel(width=2),# closes sidebar panel
  mainPanel(
    tags$style(type = "text/css", "#map {height: calc(85vh) !important;}"),
    leafletOutput(outputId = "map") 
))) 

server <- function(session, input, output) { 

output$map <- renderLeaflet({
  leaflet() %>% setView(lng= -96.83875, lat = 29.58518, zoom = 9)%>%
    addProviderTiles("Stamen.Toner") %>%
    addMarkers(lng= -96.83875, lat = 29.58518, popup = popupImage(img, embed= TRUE, width = 300))
  })}  

# Run app ----
shinyApp(ui, server)

推荐答案

popup 所在的 div-wrapper 的默认宽度显然是 301px.你可以用一些CSS来改变它.

The div-wrapper where the popup is, has a width of 301px as default apparently. You can change it with some css.

library(shiny)
library(leaflet)
library(dplyr)
library(mapview)

img = "https://cdn.sstatic.net/Sites/stackoverflow/img/error-lolcat-problemz.jpg"

csscode = HTML("
.leaflet-popup-content {
  width: 500px !important;
}")

ui <- fluidPage(
  titlePanel("example"),
  tags$head(tags$style(csscode)),
  sidebarLayout(
    sidebarPanel(width=2),# closes sidebar panel

    mainPanel(
      tags$style(type = "text/css", "#map {height: calc(85vh) !important;}"),
      leafletOutput(outputId = "map") 
    ))) 

server <- function(session, input, output) { 

  output$map <- renderLeaflet({
    leaflet() %>% setView(lng= -96.83875, lat = 29.58518, zoom = 9)%>%
      addProviderTiles("Stamen.Toner") %>%
      addMarkers(lng= -96.83875, lat = 29.58518,popup=popupImage(img,embed=TRUE,width=500))
  })}  

# Run app ----
shinyApp(ui, server)

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