97 lines
3.1 KiB
C#
97 lines
3.1 KiB
C#
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using SpaceFlint.Demos;
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namespace com.spaceflint.bluebonnet.csharp
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{
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public class MainActivity : android.app.Activity
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{
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protected override void onCreate(android.os.Bundle savedInstanceState)
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{
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base.onCreate(savedInstanceState);
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getWindow().setFlags(android.view.WindowManager.LayoutParams.FLAG_FULLSCREEN,
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android.view.WindowManager.LayoutParams.FLAG_FULLSCREEN);
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requestWindowFeature(android.view.Window.FEATURE_NO_TITLE);
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var canvasView = new CanvasView(this);
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setContentView(canvasView);
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canvasView.requestFocus();
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Points_CS.Initialize(canvasView);
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InitTimer(canvasView);
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}
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void InitTimer(CanvasView view)
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{
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const int TIMER_RATE = 16;
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java.lang.Runnable runnable = null;
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runnable = ((java.lang.Runnable.Delegate) (() =>
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{
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view.invalidate();
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view.postDelayed(runnable, TIMER_RATE);
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})).AsInterface();
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view.postDelayed(runnable, TIMER_RATE);
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}
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}
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public class CanvasView : android.view.View, HAL {
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System.Action frameCallback;
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android.graphics.Paint paint;
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android.graphics.Canvas frameCanvas;
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int frameWidth, frameHeight;
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public CanvasView(android.content.Context context) : base(context)
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{
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paint = new android.graphics.Paint();
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paint.setColor(android.graphics.Color.RED);
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paint.setAntiAlias(true);
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paint.setStrokeWidth(4);
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paint.setTextSize(30);
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}
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protected override void onDraw(android.graphics.Canvas canvas)
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{
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(frameCanvas, frameWidth, frameHeight) =
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(canvas, canvas.getWidth(), canvas.getHeight());
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paint.setColor(0x7FFF0000);
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drawCenter("Bluebonnet Demo", -4f);
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drawCenter("Android - C#", 4f);
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frameCallback();
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}
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void drawCenter(string text, float yMultiply)
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{
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var r = new android.graphics.Rect();
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frameCanvas.getClipBounds(r);
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paint.setTextAlign(android.graphics.Paint.Align.LEFT);
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paint.getTextBounds(text, 0, text.Length, r);
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float x = frameWidth / 2f - r.width() / 2f - r.left;
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float y = frameHeight / 2f + (r.height() * yMultiply) / 2f - r.bottom;
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frameCanvas.drawText(text, x, y, paint);
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}
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void HAL.Frame(System.Action callback) => frameCallback = callback;
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void HAL.Pixel(float x, float y, float r, float g, float b)
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{
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var x1 = Clamp(x, frameWidth);
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var y1 = Clamp(y, frameHeight);
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int r1 = Clamp(r, 256);
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int g1 = Clamp(g, 256);
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int b1 = Clamp(b, 256);
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paint.setColor((0xFF << 24) | (r1 << 16) | (g1 << 8) | b1);
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frameCanvas.drawPoint(x1, y1, paint);
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int Clamp(float a, int b) => System.Math.Min(System.Math.Max((int) (a * b), 0), b - 1);
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}
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float HAL.Random() => (float) java.lang.Math.random();
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}
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}
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