Draggable pie chart Flutter - flutter

I need to drag the sections of the pie chart in Flutter. is this possible, or can I make it draggable by drawing on the canvas?
Is it possible to replace the red one by dragging the blue section?

Related

how to add a gap between cells in the heatmap in the Echart library?

I don't know how to add a gap between cells in the Heatmap Echart library.
What option I need to add for this problem?
I have this chart at this moment.
I want to add a gap between cells like in this image...

Flutter How to create a custom border that acts as a progress bar around a Container, Card, Material?

Goal
In flutter how can I have edges around a card, container, material; that aren't fully wrapping, or aren't just one side?
Goal: To achieve a border based on the values between 0 and 1.
Example: https://imgur.com/a/fhrKboE
Possible Solution 1
Flutter | How to draw custom borders around a widget / inside a Container
Create a custom border that activates sides based on progress using the border width based on percentage.
Possible Solution 2
how to draw a custom flutter border like this?
Add A Custom Decoration To Container, Using Painter Class
How to create a custom border for container in Flutter?
Create a custom painter. This would probably be more efficient if I also want to animate the progress bar.

How can I get the frame of one of the x-axis labels in the horizontal bar chart of Charts?

I've created a bar chart by using the Charts framework. Currently, I'm trying to draw a red circle underneath the current day. However I'm not able to get a reference to the bounds nor the frame of the x-axis labels. How could I achieve this?
What I want to achieve is something like the added image

Restrict the dragging/movement of smart lines in fusioncharts to avoid weird shapes

I'm creating doughnut chart with smart lines and labels. When there is only one item in the chart, I'm facing an issue. If you drag the smart label or line around, the chart changes its shape in some angles. When the doughnut chart has 3-4 items this doesn't occur. I have attached screenshots. Is there any way to fix this or disable the rotation of chart when lines/labels are dragged?
To restrict the dragging of smartlines, add "enableRotation": "0" to the chart object. Here's the updated fiddle http://jsfiddle.net/g1254w67/19/

How to get horizantally-curved-list-view

I am new to android developing.
I want to create a horizontal listview that is curved towards its base.
For this,I have created a custom view and displayed the bitmaps in curved manner.But I am unable to scroll the images along the curve.
Find the layout as an attachment.I want to scroll images in curved but not the screen.