panzoom | A library for panning and zooming elements using CSS transforms :mag: | Frontend Framework library
kandi X-RAY | panzoom Summary
kandi X-RAY | panzoom Summary
Fired when the user starts a move or pinch zoom gesture on mobile. Fired whenever there is a pan, zoom, or reset. Note that direct calls to options.setTransform do not fire this event. Fired whenever the zoom is changed by any Panzoom zoom method, directly or internally. Fired whenever the pan is changed by the pan method, directly or internally. Fired when the user finishes a move or finishes a pinch zoom gesture on mobile. Fired whenever reset is called.
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Trending Discussions on panzoom
QUESTION
I am using Panzoom JS to zoom in on a map. It is working just the way I need it for zooming in and out on mobile and desktop. When you click on an item on the map, I grab the x/y coordinates relative to the top left of the container taking into account any scale applied, then look up that location/page in the database and open it. This all works great on desktop, but not on touch. I need to be able to catch the touch up location (just as if you'd clicked with a mouse) but only if there was no touch move, so I can distinguish between a pan/move, a pinch/zoom and a tap/touch-up (click). I can't find any documentation to work this out. Any help would be appreciated.
...ANSWER
Answered 2022-Feb-10 at 07:33Interesting, digging into panzoom a little, I can see you're managing three different sets of events:
QUESTION
I am able to use zoom on a single image, and that works well. However, in a more complex app, I have a dynamic UI that the plotting depends on a selectInput() like this:
ANSWER
Answered 2022-Feb-08 at 23:58Since you used renderUI, we can add panzoom after grVizoutput, like this
QUESTION
In the shiny app below I zoom and reset on a svg file. As you can see in the gif if you click the buttons quickly in succession, the script seems to lose track and resize randomly? In the gif, I click the - button repeatedly and then at the end press Reset.
ANSWER
Answered 2021-Dec-20 at 19:09That's the same strange bug I encountered the first time. A possible solution is to put the script in the renderUI:
QUESTION
I have the shiny app below in which I use js to add controls to zoom and reset on a svg file. It was working until the moment I put the output inside another UiOutput.
ANSWER
Answered 2021-Dec-20 at 11:30That's because the elements defined in the renderUI are not ready yet when the document is ready. A possible technique is to use an interval which will "screen" the document every 100ms, until it finds the element.
QUESTION
I have the shiny app below in which I want to add controls for pan and zoom like here using the panzoom package. I have added +/- but what about a reset option? If you know any other package that can do it feel free to do it.
ANSWER
Answered 2021-Dec-17 at 20:21library(shiny)
library(shinyWidgets)
library(DiagrammeR)
library(magrittr)
js <- '
$(document).ready(function(){
var element = document.getElementById("grr");
var instance = panzoom(element);
var z = 1;
$("#zoomout").on("click", function(){
instance.smoothZoom(0, 0, 0.9);
z *= 0.9;
});
$("#zoomin").on("click", function(){
instance.smoothZoom(0, 0, 1.1);
z *= 1.1;
});
$("#reset").on("click", function(){
instance.smoothZoom(0, 0, 1/z);
z = 1;
});
$("#zoomout").on("dblclick", function(){
return false;
});
$("#zoomin").on("dblclick", function(){
return false;
});
});
'
ui <- fluidPage(
tags$head(
tags$script(src = "https://unpkg.com/panzoom@9.4.0/dist/panzoom.min.js"),
tags$script(HTML(js))
),
grVizOutput("grr", width = "100%", height = "90vh"),
actionGroupButtons(
inputIds = c("zoomout", "zoomin", "reset"),
labels = list(icon("minus"), icon("plus"), "Reset"),
status = "primary"
)
)
server <- function(input, output) {
reactives <- reactiveValues()
observe({
reactives$graph <- render_graph(
create_graph() %>%
add_n_nodes(n = 2) %>%
add_edge(
from = 1,
to = 2,
edge_data = edge_data(
value = 4.3
)
)
)
})
output$grr <- renderGrViz(reactives$graph)
}
shinyApp(ui, server)
QUESTION
I have used panzoom package in order to pan and zoom on my svg file in my shiny app. Is there a way to have controls like this?
ANSWER
Answered 2021-Dec-16 at 20:06Here is a way, but if you click too quickly on the +/- buttons, there's an undesirable effect.
QUESTION
I have the shiny app below from which I ant to take a screenshot of the svg file but it captures only the upper corner of it.
...ANSWER
Answered 2021-Dec-16 at 12:47You can use the capture package instead. Works well, but you won't get an SVG image.
QUESTION
I am trying to write a subclass of vispy.scene.SceneCanvas and use it as a plot widget in my PyQt5 application. However, the plot always appears at wrong position (top-right corner), and I did not get any hint from vispy docs about this problem.
Actual Position
Expected Position
code:
...ANSWER
Answered 2021-Nov-04 at 15:12I compared your code to what was in the plotting API and was able to get it to work using height_max and width_max instead of stretch. See https://github.com/vispy/vispy/blob/efa49b6896321374149998e15f8bce2ae327ba70/vispy/plot/plotwidget.py#L116-L131
Here is what the code looks like for me now:
QUESTION
I'm trying to include and use the function BootstrapCookieConsentSettings from the npm package bootstrap-cookie-consent-settings in my function initConsentBanner but webpack always throws it away and does not include it even though it is used in the referenced entry.js file. Why is it not included?
webpack.config.js:
ANSWER
Answered 2021-Oct-13 at 06:59If you look at the source of bootstrap-cookie-consent-settings (source code), you see that the BootstrapCookieConsentSettings function is not exported. Therefore it is not visible in your entry.js, when you try to import it.
You could simply modify the function in node_modules/bootstrap-cookie-consent-settings/src/bootstrap-cookie-consent-settings.js, so that the function will be visible to your code:
QUESTION
I'm using this panzoom library, however I'm struggling to get it to work multiple instances on the same page with custom options.
Here is a jsFiddle which allows for multiple panzooms all with the same class.
...ANSWER
Answered 2021-Jul-12 at 21:38I managed to fix my issue with the below:
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