应用多彩色滤光片,以相同的绘制 [英] Apply many color filters to the same drawable
问题描述
我想在链应用几个彩色滤光片为绘制。那可能吗?或者,也许要创建一个过滤器是我想要应用的过滤器的组合。
例如,我想:
绘制对象D = ...;
d.setColorFilter(0x3F000000,Mode.OVERLAY).setColorFilter(0xFF2D2D2D,Mode.SCREEN)
这是我最后使用方法:操纵上的绘制对象
位图帆布
键,因为我需要申请成为许多层,使用油漆
,它的作品不仅为彩色滤光片,而且对于任何种类的图像混合的。
...
可绘制myBackground = createBackground(getResources()的getColor(R.color.Green)。);
setBackgroundDrawable(myBackground);
...
私人绘制对象createBackground(INT颜色){
帆布油画=新的Canvas();
位图按钮画面= BitmapFactory.de codeResource(getResources(),R.drawable.btn_image);
位图buttonShadows = BitmapFactory.de codeResource(getResources(),R.drawable.btn_shadows);
位图buttonHighLights = BitmapFactory.de codeResource(getResources(),R.drawable.btn_highlights);
位图的结果= Bitmap.createBitmap(buttonImage.getWidth(),buttonImage.getHeight(),Bitmap.Config.ARGB_8888);
canvas.setBitmap(结果);
涂料粉刷=新的油漆();
paint.setFilterBitmap(假);
// 颜色
paint.setColorFilter(新PorterDuffColorFilter(颜色,Mode.MULTIPLY));
canvas.drawBitmap(按钮画面,0,0,油漆);
paint.setColorFilter(空);
//阴影
paint.setXfermode(新PorterDuffXfermode(Mode.MULTIPLY));
canvas.drawBitmap(buttonShadows,0,0,油漆);
//亮点
paint.setXfermode(新PorterDuffXfermode(Mode.SCREEN));
canvas.drawBitmap(buttonHighLights,0,0,油漆);
paint.setXfermode(空);
返回新BitmapDrawable(getResources(),结果);
}
警告: setBackgroundDrawable(可绘制D)
是德precated,而的setBackground(可绘制D)
只能从API 16日,所以如果你有像我这样的一个分目标的API-14的最大目标API-17,你有没有干净的方式来设置可绘制作为背景。我贴的德precated电话。
I want to apply several color filters in chain to a drawable. Is that possible? Or maybe to create a filter that is the combination of the filters I want to apply.
For example, I would like:
Drawable d = ...;
d.setColorFilter(0x3F000000, Mode.OVERLAY).setColorFilter(0xFF2D2D2D, Mode.SCREEN)
This is the approach I ended using: Manipulate the Drawable
bitmap on a Canvas
and apply as many layers as I need, using Paint
, it works not only for color filters, but also for any kind of image blending.
...
Drawable myBackground = createBackground(getResources().getColor(R.color.Green));
setBackgroundDrawable(myBackground);
...
private Drawable createBackground(int color) {
Canvas canvas = new Canvas();
Bitmap buttonImage = BitmapFactory.decodeResource(getResources(), R.drawable.btn_image);
Bitmap buttonShadows = BitmapFactory.decodeResource(getResources(), R.drawable.btn_shadows);
Bitmap buttonHighLights = BitmapFactory.decodeResource(getResources(), R.drawable.btn_highlights);
Bitmap result = Bitmap.createBitmap(buttonImage.getWidth(), buttonImage.getHeight(), Bitmap.Config.ARGB_8888);
canvas.setBitmap(result);
Paint paint = new Paint();
paint.setFilterBitmap(false);
// Color
paint.setColorFilter(new PorterDuffColorFilter(color, Mode.MULTIPLY));
canvas.drawBitmap(buttonImage, 0, 0, paint);
paint.setColorFilter(null);
// Shadows
paint.setXfermode(new PorterDuffXfermode(Mode.MULTIPLY));
canvas.drawBitmap(buttonShadows, 0, 0, paint);
// HighLights
paint.setXfermode(new PorterDuffXfermode(Mode.SCREEN));
canvas.drawBitmap(buttonHighLights, 0, 0, paint);
paint.setXfermode(null);
return new BitmapDrawable(getResources(), result);
}
Caveat: setBackgroundDrawable(Drawable d)
is deprecated, while setBackground(Drawable d)
is only available from api 16 on, so if you have like me a min target api-14 max target api-17 you have no "clean" way to set the drawable as background. I sticked with the deprecated call.
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