2019年2月13日水曜日

Python - Kivy - キャンバス(楕円(Ellipse)、直線(Line)、破線、コンテキスト命令と描画命令)

Kivyプログラミング ―Pythonで作るマルチタッチアプリ― (実践Pythonライブラリー) (原口 和也(著)、久保 幹雄(監修)、朝倉書店)の5(キャンバス)、5.4(演習問題)、演習5.2の解答を求めてみる。

コード

Python 3

```#!/usr/bin/env python3
from kivy.app import App
# 日本語用
from kivy.core.text import LabelBase, DEFAULT_FONT
LabelBase.register(DEFAULT_FONT, 'NotoSansCJKjp-Regular.otf')

class EllipseApp(App):
pass

EllipseApp().run()
```

KV言語

```FloatLayout:
canvas:
Color:
rgb: 1, 0, 0
Ellipse:
pos: 100, 50
size: 300, 200
Color:
rgb: 1, 1, 1
Line:
dash_length: 1
dash_offset: 5
points: 0, 50, 400, 50, 400, 250, 100, 250, 100, 0
Label:
x: -745
y: -570
font_size: 20
bold: True
text: '(100, 50)'
Label:
x: -745
y: -450
font_size: 20
text: '200'
Label:
x: -550
y: -570
font_size: 20
text: '300'
```

```\$ python3 sample2.py
[INFO   ] [Kivy        ] v1.10.1
[INFO   ] [Python      ] v3.7.2 (default, Dec 30 2018, 08:55:50)
[Clang 10.0.0 (clang-1000.11.45.5)]
[INFO   ] [Factory     ] 194 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_imageio, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [Window      ] Provider: sdl2
[INFO   ] [GL          ] Using the "OpenGL ES 2" graphics system
[INFO   ] [GL          ] Backend used <gl>
[INFO   ] [GL          ] OpenGL version <b'2.1 INTEL-12.4.7'>
[INFO   ] [GL          ] OpenGL vendor <b'Intel Inc.'>
[INFO   ] [GL          ] OpenGL renderer <b'Intel(R) Iris(TM) Pro Graphics 6200'>
[INFO   ] [GL          ] OpenGL parsed version: 2, 1
[INFO   ] [GL          ] Shading version <b'1.20'>
[INFO   ] [GL          ] Texture max size <16384>
[INFO   ] [GL          ] Texture max units <16>
[INFO   ] [Window      ] auto add sdl2 input provider
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [Base        ] Start application main loop
[INFO   ] [GL          ] NPOT texture support is available
[INFO   ] [Base        ] Leaving application in progress...
\$
```