shapes - w3toppers.com

Android different EditText backgrounds for different states using shapes, selector or list

I suggest to use NinePatch images to customize your EditText. Here goes an example based on my code: The Selector: <selector xmlns:android=”http://schemas.android.com/apk/res/android”> <item android:state_window_focused=”false” android:state_enabled=”true” android:drawable=”@drawable/twitter_im_edittext_normal” /> <item android:state_window_focused=”false” android:state_enabled=”false” android:drawable=”@drawable/twitter_im_edittext_normal” /> <item android:state_pressed=”true” android:drawable=”@drawable/twitter_im_edittext_normal” /> <item android:state_enabled=”true” android:state_focused=”true” android:drawable=”@drawable/twitter_im_edittext_focused” /> <item android:state_enabled=”true” android:drawable=”@drawable/twitter_im_edittext_normal” /> <item android:state_focused=”true” android:drawable=”@drawable/twitter_im_edittext_focused” /> <item android:drawable=”@drawable/twitter_im_edittext_normal” /> </selector> Use selector … Read more

Java make a directed line and make it move

This is a basic example that demonstrates the use of a Path2D, to define a custom shape and an AffineTransformation to transform the shape. This example will cause the arrow to point towards the mouse as it moves over the panel import java.awt.BasicStroke; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Graphics; import java.awt.Graphics2D; … Read more

Change shape solid color at runtime inside Drawable xml used as background

Found by me: View v = findViewById(R.id.layout_id); LayerDrawable bgDrawable = (LayerDrawable)v.getBackground(); final GradientDrawable shape = (GradientDrawable) bgDrawable.findDrawableByLayerId(R.id.shape_id); shape.setColor(—-);

How to create a DataFrame of random integers with Pandas?

numpy.random.randint accepts a third argument (size) , in which you can specify the size of the output array. You can use this to create your DataFrame – df = pd.DataFrame(np.random.randint(0,100,size=(100, 4)), columns=list(‘ABCD’)) Here – np.random.randint(0,100,size=(100, 4)) – creates an output array of size (100,4) with random integer elements between [0,100) . Demo – import numpy … Read more

How to use same set of modifiers for various shapes

Using the helper AnyShape type eraser struct AnyShape: Shape { private let builder: (CGRect) -> Path init<S: Shape>(_ shape: S) { builder = { rect in let path = shape.path(in: rect) return path } } func path(in rect: CGRect) -> Path { return builder(rect) } } your function can be written as func getShape(shape: Int, … Read more

Java check if two rectangles overlap at any point

Background: A rectangle can be defined by just one of its diagonal. Let’s say the first rectangle’s diagonal is (x1, y1) to (x2, y2) And the other rectangle’s diagonal is (x3, y3) to (x4, y4) Proceeding: Now, if any of these 4 conditions is true, we can conclude that the rectangles are not overlapping: x3 … Read more

How do I scale a PyGame image (Surface) with respect to its center?

You missed to update the size of self.pixeltitlerect after the Surface has been scaled: self.pixeltitle = pg.transform.scale(self.pixeltitle,(xsize,ysize)) # size of surface has been changed get the new rectangle self.pixeltitlerect = self.pixeltitle.get_rect() self.pixeltitlerect.center = (250,120) self.screen.blit(self.pixeltitle,self.pixeltitlerect) Or even shorter (see pygame.Surface.get_rect()): self.pixeltitle = pg.transform.scale(self.pixeltitle,(xsize,ysize)) self.pixeltitlerect = self.pixeltitle.get_rect(center = (250,120)) self.screen.blit(self.pixeltitle,self.pixeltitlerect) Do not scale the original Surface. … Read more

Two Rectangles intersection

if (X1+W1<X2 or X2+W2<X1 or Y1+H1<Y2 or Y2+H2<Y1): Intersection = Empty else: Intersection = Not Empty If you have four coordinates – ((X,Y),(A,B)) and ((X1,Y1),(A1,B1)) – rather than two plus width and height, it would look like this: if (A<X1 or A1<X or B<Y1 or B1<Y): Intersection = Empty else: Intersection = Not Empty

How to compare two shapes?

handle shape as polygon convert your points (each line) to set of lines (length,angle) like on this image: this ensures invariance on rotation/translation. If you see more lines with angle=PI join them together to avoid miss comparisons of the same shapes with different sampling also try to match the same CW/CCW polygon winding rule for … Read more

How to make gradient background in android

Visual examples help with this kind of question. Boilerplate In order to create a gradient, you create an xml file in res/drawable. I am calling mine my_gradient_drawable.xml: <?xml version=”1.0″ encoding=”utf-8″?> <shape xmlns:android=”http://schemas.android.com/apk/res/android”> <gradient android:type=”linear” android:angle=”0″ android:startColor=”#f6ee19″ android:endColor=”#115ede” /> </shape> You set it to the background of some view. For example: <View android:layout_width=”200dp” android:layout_height=”100dp” android:background=”@drawable/my_gradient_drawable”/> type=”linear” … Read more