问题描述
我想创建一个方格纸放眼位图,我通过一个Canvas绘图,并试图找出做到这一点的最好办法。
I would like to create a 'graph paper' look to the Bitmap I am drawing via a Canvas, and trying to figure out the best way to do this.
我无法传递包含方格纸背景画布构造一个源位图,因为我通过.lockCanvas越来越画布在SurfaceView()调用。
I can't pass a source Bitmap containing the graph paper background to the Canvas constructor, as I am getting the Canvas in a SurfaceView via the .lockCanvas() call.
一些解决方案,我已经试过:
Some solutions I've tried:
-
我已经试过落实在我的SurfaceView的主题这个解决方案。运行(),但是当BitmapDrawable转换为位图的问题,我认为是......它失去平铺属性。
I've tried implementing this solution in my SurfaceView's Thread.run(), but the issue I believe is when the BitmapDrawable is converted to a Bitmap... it loses the tiling properties.
画布= mSurfaceHolder.lockCanvas(空);BitmapDrawable TileMe =新BitmapDrawable(BitmapFactory.de codeResource(getResources(),R.drawable.editor_graph));TileMe.setTileModeX(Shader.TileMode.REPEAT);TileMe.setTileModeY(Shader.TileMode.REPEAT);
canvas = mSurfaceHolder.lockCanvas(null);BitmapDrawable TileMe = new BitmapDrawable(BitmapFactory.decodeResource(getResources(), R.drawable.editor_graph));TileMe.setTileModeX(Shader.TileMode.REPEAT);TileMe.setTileModeY(Shader.TileMode.REPEAT);
位图B = TileMe.getBitmap();canvas.drawBitmap(B,0,0,NULL);
Bitmap b = TileMe.getBitmap();canvas.drawBitmap(b, 0, 0, null);
如果我使用Canvas.drawBitmap方法,它的目的地RectF作为参数,它看起来像将被平铺,以填补RectF位图......但我怎么申报RectF可靠,填补了整个景区?
If I use the Canvas.drawBitmap method that takes a destination RectF as a parameter, it looks like the bitmap will be tiled to fill the RectF... but how do I declare a RectF reliably that fills the entire view area?
任何想法如何实现这一目标?
Any ideas how to achieve this?
谢谢,保
推荐答案
您有两个简单的解决办法:
You have two easy solutions:
- 要么使用一个BitmapDrawable的,而是提取位图,只需拨打BitmapDrawable.draw(画布)。不要忘记设置可绘制的边界,以填补你的绘图区域。
- 创建一个BitmapShader一个画画它的矩形(这基本上是BitmapDrawable呢)。
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