gradient | perl script that will make text | Command Line Interface library

I am building a landing page that has a logo and then a sign in and login button below it. I used a box decoration to specify the background color because I am very particular about the gradient scheme. However, I realize it may have some kind of "absolute" effect on my container widget because I can't seem to change the colors of the buttons within the widget. I am new to flutter UI and I am probably layering the widgets incorrectly, but any help would be greatly appreciated! Here's the code for the landing page:

After flutter 2.5 update listview is scrolling only on mobile platforms. It doesn't scroll when I open it on the web. It was working fine in the previous version. I tried the scroll physics but it didn't work. what do you suggest i do? sorry for my bad english.

It was working fine before I have done nothing, no packages update, no gradle update no nothing just created new build and this error occurs. but for some team members the error occur after gradle sync.

The issue is that build is generating successfully without any error but when opens the app it suddenly gets crash (in both debug and release mode)

Error

There are so many ways to define colour scales within ggplot2. After just loading ggplot2 I count 22 functions beginging with scale_color_* (or scale_colour_*) and same number beginging with scale_fill_*. Is it possible to briefly name the purpose of the functions below? Particularly I struggle with the differences of some of the functions and when to use them.

• scale_*_binned()
• scale_*_brewer()
• scale_*_continuous()
• scale_*_date()
• scale_*_datetime()
• scale_*_discrete()
• scale_*_distiller()
• scale_*_fermenter()
• scale_*_gradient()
• scale_*_gradient2()
• scale_*_gradientn()
• scale_*_grey()
• scale_*_hue()
• scale_*_identity()
• scale_*_manual()
• scale_*_ordinal()
• scale_*_steps()
• scale_*_steps2()
• scale_*_stepsn()
• scale_*_viridis_b()
• scale_*_viridis_c()
• scale_*_viridis_d()

What I tried

I've tried to make some research on the web but the more I read the more I get onfused. To drop some random example: "The default scale for continuous fill scales is scale_fill_continuous() which in turn defaults to scale_fill_gradient()". I do not get what the difference of both functions is. Again, this is just an example. Same is true for scale_color_binned() and scale_color_discrete() where I can not name the difference. And in case of scale_color_date() and scale_color_datetime() the destription says "scale_*_gradient creates a two colour gradient (low-high), scale_*_gradient2 creates a diverging colour gradient (low-mid-high), scale_*_gradientn creates a n-colour gradient." which is nice to know but how is this related to scale_color_date() and scale_color_datetime()? Looking for those functions on the web does not give me very informative sources either. Reading on this topic gets also chaotic because there are tons of color palettes in different packages which are sequential/ diverging/ qualitative plus one can set same color in different ways, i.e. by color name, rgb, number, hex code or palette name. In part this is not directly related to the question about the 2*22 functions but in some cases it is because providing a "wrong" palette results in an error (e.g. the error"Continuous value supplied to discrete scale).

Why I ask this

I need to do many plots for my work and I am supposed to provide some function that returns all kind of plots. The plots are supposed to have similiar layout so that they fit well together. One aspect I need to consider here is that the colour scales of the plots go well together. See here for example, where so many different kind of plots have same colour scale. I was hoping I could use some general function which provides a colour palette to any data, regardless of whether the data is continuous or categorical, whether it is a fill or col easthetic. But since this is not how colour scales are defined in ggplot2 I need to understand what all those functions are good for.

Here is a gradient color legend I created using rasterImage:

I want to set gradient as textcolor and also at the same time I want text to have a solid stroke around it as well in a TextView. So far what I have achieved is text can only show gradient or the stroke, not both at the same time.

I've created a custom class with extended TextView and I am using the following methods:

Using this to draw stroke:

To be able to see through to the other side what I want to do is make the circle area transparent so you are able to see through to the background image.

How would this be done?

Is there a way to do that?

https://jsfiddle.net/r95sy2fw/

This image is what I am trying to replicate in the code.

How do I make it transparent like that?

The snippet I provided currently looks like this:

I have an input range in a div contained in an outer div that is smaller than the inner div. The final result is that my inner div scrolls horizontally (because the outer dive has overflow: scroll), and the input range is its child.

To customize the range, I removed the appearance in CSS with appearance: none. Now, here is what happens. When I check it in Chrome developer's tool (actually I use Brave, but I'm guessing it is the same in Chrome as I tested in Chromium, and it is the same) with the smartphone option active, 99% of the time if I try to move the range handle it moves the whole div with it. Now, if I disable the smartphone option, it works just fine. Also, if I keep the smartphone option and remove the appearance: none from CSS, it also works just fine, but my customizations to the range disappear. Does anyone know what is going on?

PS.: in Firefox, the input range doesn't work as long as I keep the smartphone option on (no matter if I have the appearance property or not).

Here is an animated gif of what I mean: First, I have the described above with the input range with no appearance. It works fine, I can move the scrollable div and move the input range handle independently. Then I put the appearance: none to the input range (notice the formatting of the input range changes), now I can't move the input range handle independently from the scrollable div anymore. Finally, remove the appearance from the input range, and everything goes back to normal (but my customizations are gone)

Here is the code, but you can only simulate by using the developer's tool with the smartphone option active, where you can simulate the touch.

I want to color my ridgeline plot with gradient fill colors depending on the height of the area instead of depending on the X axis. It would be somthing like this: