Download Kivy: Interactive Applications in Python by Roberto Ulloa PDF

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By Roberto Ulloa

Mobiles and drugs have introduced with them a dramatic swap within the software of functions. Compatibility has turn into crucial, and this has elevated the type of interplay that clients anticipate: gestures, multi-touches, animations, and magic pens. Kivy is an open resource Python resolution that covers those industry wishes with an easy-to-learn and fast improvement technique. Kivy is transforming into speedy and gaining recognition in its place to the proven constructing platforms.

Kivy: Interactive functions in Python speedy introduces you to the Kivy improvement method. you'll research a few examples of ways to take advantage of a few of the Kivy parts, in addition to know how to combine and mix them into mammoth initiatives. This publication serves as a reference consultant and is equipped in this sort of approach that after comprehensive, you have got already accomplished your first undertaking.

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Additional resources for Kivy: Interactive Applications in Python

Sample text

StackLayout This layout is similar to BoxLayout but it goes to the next row or column when it runs out of space. In this layout, there is more flexibility to set the orientation. For example, 'rl-bt' organizes the widgets in rightto-left and bottom-to-top order. Any combination of lr (left to right), rl (right to left), tb (top to bottom), and bt (bottom to top) is allowed. Anchor Layout This layout organizes the widgets to a border or to the center. The anchor_x property indicates the x position (left, center or right), whereas anchor_y indicates the y position (top, center or bottom) This layout organizes the widgets with proportional coordinates with the size_hint and pos_hint properties.

After this chapter we understand the general ideas and we should be able to use most of the elements available for the GUI design. There is, however, a very important and particular element that we haven't studied yet: the canvas, which mainly allow us to draw vector shapes (such as circles and lines for our project) in the screen. This will be the major topic of the next chapter. info Graphics – The Canvas Any Kivy Widget contains a Canvas object. Be careful with the name because it might be confusing: A Canvas is not the place where we draw.

Finally, you should be aware that all you see on the screen is drawn by instructions within Canvas instances. For example, this includes Label texts and the Button backgrounds. Summary In this chapter we introduced many topics related to the use of the canvas. We covered the use of vertex and context instructions and how to manipulate the order of execution of instructions. You learned how to deal with transformation of the Canvas, either reversing all the transformations or using RelativeLayout.

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