I am using fabric canvas to draw rectangle on two mouse clicks.I am using Angular.js along with fabric.When I logged in to the application the rectangle drawn position changes after two mouse clicks.
I totally unaware about how to reset and refresh fabric js canvas. For any queries see my previous questions including code.
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Please check the red marked area of the picture. I need to implement this thing in a React project. It's a vertical scroll timeline indicator of all posts coming from the database.
I am trying to make the zooming functionality of a d3 topology map smoother on my app. The default zooming behavior are kind of lag a lot and mostly it conflicts with ionic touch events. I am trying to disable all default zooming features completely and will try to do it with zoom in/out buttons.. But it seems I cannot disable zoom.
Here is my markup
And here is my map code ...
Though I cannot pinch zoom on the map, but it seems I can zoom the svg by pinching the white area outside the map. I want to disable the pinch zoom completely so user cannot zoom it using touch.
You could put a div above the map, and give this div a transparent background and give it height and width as the map size, so when user touch the div it will give no effect since it is the div and not the map, and then you can do your zooming using 2 buttons (zoom in/ zoom out).
Instagram has a really cool interaction where you can tap-and-hold, aka longPress, on an image and an interactive pop-up appears. Once it appears you can drag your finger to one of the action buttons and removing your finger applies the action and closes the pop-up.
Here it is in action.
And here's a link to a video if you need a closer look.
In my app I've got the tap-and-hold popup working, but the finger drag continues to control the underlying View.
How do you get the finger interaction to transfer to the pop-up?
How do you get the buttons responding to finger drag-over?
This is something you can achieve with PanResponder. Using Pan Responder you are basically creating your own touchable components. Click here for the docs.
Also, you would need the Animated API for animating the transitions.
I am using high stock to draw a stock chart, while moving the navigator, the chart should redraw and the setExtremes event should be triggered.
it works fine on the desktop browser, but in mobile, i found the chart is not re drawed immediately while dragging the navigator, util i let go, thus i can not get the date range while moving the navigator, that is not really good user experience.
Does anyone has a solution?
The behavior in mobile client seems the adaptToUpdatedData attribute is set to false
I am writing an WPF application, with drag and drop support within controls in the app, and also drag and drop between my desktop file and my app. I use adorner to change my mouse cursor.
The internal dragdrop operation between controls has no problem. The problem is dragdrop between desktop file and my app.
I set a DragEnter and DragLeave handler for my Window. When I drag a file into my app, DragEnter fired, but it's not just fired once, but keep firing with DragLeave alternatively on my application window.
What I already achieve is, I can manage to drag file into my app, with desired adorner; but if i keep holding the mouse and drag the file back to desktop, the adorner just stuck in the corner. I can't clear the adorner by using DragLeave, because the DragLeave event is firing non stop when I drag mouse in my app.
I want the DragLeave to fired only when the mouse cursor drag leave my application.
Any workaround?
Here is a possible workaround that you could do for this scenario.
DragDrop - DragEnter/DragLeave Events keep firing