IronPythonで、図形とブラシ( Shape, Brush )を動的に作成

タブ・コントロール TabControl に、図形・ブラシを動的に作成
BLOG: 続・ひよ子のきもち
2008-10-13 第4章 ブラシ 1/5, LinearGradientBrush
http://d.hatena.ne.jp/kotsubu-chan/20081013
2008-05-12 第2章 TabControl 1/1
http://d.hatena.ne.jp/kotsubu-chan/20080512
等複数のページから、 XAMLとIronPythonのコード を myBlog 用に少しアレンジしています。

続・ひよ子のきもち は、本当に興味深いPageです。
WPF・IronPython・OOP について、色々と教えてもらいました。

#
# exBrush.py
#
import clr
clr.AddReferenceByPartialName("PresentationFramework")
clr.AddReferenceByPartialName("PresentationCore")
clr.AddReference('WindowsBase') # for Point, Rect

from System import Object, Uri, UriKind
from System.Windows.Markup import XamlReader
from System.Windows import (
        Window, Application, Point, Rect, LogicalTreeHelper, Thickness)
#from System.Windows.Controls import Canvas
from System.Windows.Media import (
        Color, Colors, SolidColorBrush, Brushes, PointCollection, DrawingGroup, DrawingBrush, 
        VisualBrush, ImageBrush, LinearGradientBrush, RadialGradientBrush, GradientStop,
        GeometryGroup, RectangleGeometry,TileMode,EllipseGeometry, GeometryDrawing)
from System.Windows.Media.Imaging import BitmapImage
from System.Windows.Shapes import Ellipse, Polygon

xaml_str="""
<TabControl
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <TabItem   Header="SolidColorBrush">
        <WrapPanel Name="solidColorBrush" />
    </TabItem>
    <TabItem   Header="LinearGradientBrush">
        <WrapPanel Name="linearGradientBrush" />
    </TabItem>
    <TabItem   Header="RadialGradientBrush">
        <WrapPanel Name="radialGradientBrush" />
    </TabItem>
    <TabItem   Header="ImageBrush">
        <WrapPanel Name="imageBrush" />
    </TabItem>
    <TabItem   Header="DrawingBrush">
        <WrapPanel Name="drawingBrush" />
    </TabItem>
    <TabItem   Header="VisualBrush">
        <WrapPanel Name="visualBrush" />
    </TabItem>
</TabControl>
"""
class ExWindow(Window):
    def __init__(self, Content=None, **args):
        for key,value in args.items():
            setattr(self,key,value)
        self.InitializeComponent(Content)
        self.init()

    def InitializeComponent(self, Content):
        self.Content = XamlReader.Parse(Content)
        
    def init(self):
        target = (
            "solidColorBrush",
            "linearGradientBrush",
            "radialGradientBrush",
            "imageBrush",
            "drawingBrush",
            "visualBrush",
            )
        self._Controls(target)

    def _Controls(self, target):
        for e in target:
            #c = LogicalTreeHelper.FindLogicalNode(self.Content, e)
            c = self.Content.FindName(e)
            setattr(self, e, c)
        for e in target:
            items = getattr(self, e)
            for shape in self.newEllipse(), self.newPolygon():
                shape.Fill = getattr(self, "_%s"%e)()
                items.Children.Add(shape)

    def _solidColorBrush(self):
        return Brushes.Yellow

    def _linearGradientBrush(self):
        brush = LinearGradientBrush()
        for color, offset in [
            ("Yellow", 0.0),    # follow me ..)^.^)
            ("Green" , 1.0),
            ]: 
            brush.GradientStops.Add(GradientStop(
                Color=getattr(Colors, color),
                Offset=offset,
                ))
        return brush

    def _radialGradientBrush(self):
        brush = RadialGradientBrush()
        for color, offset in [
            ("Yellow", 0.0),    # follow me ..)^.^)
            ("Green" , 1.0),
            ]: 
            brush.GradientStops.Add(GradientStop(
                Color=getattr(Colors, color),
                Offset=offset,
                ))
        return brush

    def _imageBrush(self):
        return ImageBrush(
            ImageSource = BitmapImage(Uri("http://softgarden.lovepop.jp/myBlog/image/j0182772.jpg")))
            #ImageSource= BitmapImage(Uri("j0182772.jpg", UriKind.Relative)))
    def _drawingBrush(self):
        brush = DrawingBrush(
            Viewport=Rect(0, 0, 0.1, 0.1),
            TileMode=TileMode.Tile,
            )
        sheet = GeometryDrawing(
            brush=Brushes.Yellow,
            pen=None,
            geometry=RectangleGeometry(Rect(0, 0, 50, 50)))
        geometry = GeometryGroup()
        for (px, py), rx, ry in (
            ((10, 10), 10, 10),
            ((35, 35), 15, 15),
            ):
            geometry.Children.Add(EllipseGeometry(
                Center=Point(px, py),
                RadiusX=rx,
                RadiusY=ry,
                ))
        marble = GeometryDrawing(
            brush=Brushes.Blue,
            pen=None,
            geometry=geometry)
        drawing = DrawingGroup()
        for e in sheet, marble:
            drawing.Children.Add(e)
        brush.Drawing = drawing
        return brush

    def _visualBrush(self):
        brush = VisualBrush()
        brush.Visual = self.imageBrush
        return brush

    def newEllipse(self):
        return Ellipse(
            Stroke=Brushes.Blue,
            StrokeThickness=2,
            Width=100,
            Height=50,
            )

    def newPolygon(self):
        points = PointCollection()
        vertices = "0,28 80,28 12,80 40,0 68,80"
        for e in vertices.split(" "):
            x, y = eval(e)
            points.Add(Point(x, y))
        return Polygon(
            Stroke=Brushes.Blue,
            StrokeThickness=2,
            Points=points,
            )

if __name__ == "__main__":
    win = ExWindow(Title="exBrush.py", Width=400, Height=200, Content=xaml_str)
    Application().Run(win)

	IronPythonの世界 (Windows Script Programming)
	荒井 省三
	ソフトバンク クリエイティブ

	エキスパートPythonプログラミング
	Tarek Ziade
	アスキー・メディアワークス

	Pythonスタートブック
	辻 真吾
	技術評論社