using System;
|
using Android.Content;
|
using Android.Graphics;
|
using Android.Graphics.Drawables;
|
using Android.Util;
|
using Android.Views;
|
|
namespace Shared
|
{
|
/// <summary>
|
/// 色板
|
/// </summary>
|
public class ColorPicker : View
|
{
|
MyColorPickerView myColorPickerView {
|
get {
|
return AndroidView as MyColorPickerView;
|
}
|
set {
|
AndroidView = value;
|
}
|
}
|
|
/// <summary>
|
/// Initializes a new instance of the <see cref="Shared.Button"/> class.
|
/// </summary>
|
public ColorPicker()
|
{
|
myColorPickerView = new MyColorPickerView(Application.Activity,this);
|
}
|
|
|
string colorImagePath;
|
/// <summary>
|
/// 色板图
|
/// </summary>
|
/// <value>The color image path.</value>
|
public string ColorImagePath {
|
get {
|
return colorImagePath;
|
}
|
set {
|
colorImagePath = value;
|
Background (colorImagePath);
|
}
|
}
|
|
/// <summary>
|
/// 颜色变化
|
/// </summary>
|
public Action<View, byte[]> ColorChaged;
|
|
public class MyColorPickerView : Android.Views.View
|
{
|
Bitmap bitmapTemp;
|
|
View _view;
|
public MyColorPickerView(Context context, View view)
|
: base(context)
|
{
|
_view = view;
|
}
|
|
public override Android.Graphics.Drawables.Drawable Background
|
{
|
get
|
{
|
return base.Background;
|
}
|
set
|
{
|
base.Background = value;
|
|
bitmapTemp = drawableToBitmap(value);
|
}
|
}
|
|
static Bitmap drawableToBitmap(Drawable drawable)
|
{
|
if (drawable == null)
|
{
|
return null;
|
}
|
var bitmap = Bitmap.CreateBitmap(drawable.IntrinsicWidth,drawable.IntrinsicHeight,Bitmap.Config.Rgb565);
|
|
Canvas canvas = new Canvas(bitmap);
|
drawable.SetBounds(0, 0, drawable.IntrinsicWidth, drawable.IntrinsicHeight);
|
drawable.Draw(canvas);
|
return bitmap;
|
}
|
/// <summary>
|
/// 重写点击事件
|
/// </summary>
|
/// <returns><c>true</c>, if touch event was oned, <c>false</c> otherwise.</returns>
|
/// <param name="e">E.</param>
|
public override bool OnTouchEvent(MotionEvent e)
|
{
|
if (_view != null && _view.Enable)
|
{
|
_view.TouchEvent( e);
|
}
|
if (bitmapTemp != null && (_view as ColorPicker).ColorChaged != null)
|
{
|
int x = Math.Abs((int)(e.GetX() * bitmapTemp.Width / Width));
|
int y = Math.Abs((int)(e.GetY() * bitmapTemp.Height / Height));
|
if (bitmapTemp.Width <= x) {
|
x = bitmapTemp.Width - 1;
|
}
|
|
if (bitmapTemp.Height <= y) {
|
y = bitmapTemp.Height - 1;
|
}
|
var color = bitmapTemp.GetPixel(x,y);
|
(_view as ColorPicker).ColorChaged(_view, new byte[] { (byte)((color >> 16) & 0xFF), (byte)((color >> 8) & 0xFF), (byte)(color & 0xFF) });
|
//Shared.HDLUtils.WriteLine("ColorChaged color：" + color);
|
}
|
|
//return base.OnTouchEvent(e);
|
return true;//2019-09-09 改为 return true
|
}
|
}
|
}
|
}
|
