[Taxi passenger V1.1.0] 增加 textview 渐变

2022-03-22 21:18:10 +08:00
parent 5819200cd5
commit b28c3ab3cd
1 changed files with 138 additions and 0 deletions
--- a/OCH/mogo-och-taxi-passenger/src/main/java/com/mogo/och/taxi/passenger/ui/GradientTextView.java
+++ b/OCH/mogo-och-taxi-passenger/src/main/java/com/mogo/och/taxi/passenger/ui/GradientTextView.java
@@ -0,0 +1,138 @@
+package com.mogo.och.taxi.passenger.ui;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.LinearGradient;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.graphics.Shader;
+import android.util.AttributeSet;
+import androidx.appcompat.widget.AppCompatTextView;
+
+/**
+ * @author: wangmingjun
+ * @date: 2022/3/22
+ */
+public class GradientTextView extends AppCompatTextView {
+
+    private LinearGradient mLinearGradient;
+    private Paint mPaint;
+//    private Paint strokPaint;
+    private int mViewWidth = 0;//文字的宽度
+    private int mViewHeight = 0;//文字的高度
+    private Rect mTextBound = new Rect();
+    private int[] mColorList;//存放颜色的数组
+    private boolean isVertrial;//默认是横向
+
+    private float mRadius;
+    private float mdx;
+    private float mdy;
+    private int mColor;
+
+    public GradientTextView(Context context) {
+        this(context, null);
+    }
+
+    public GradientTextView(Context context,
+                            AttributeSet attrs) {
+        super(context, attrs);
+        //设置默认的颜色
+        mColorList = new int[]{0xFFFFFFFF, 0xFFFFFFF};
+    }
+
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+
+        if (isVertrial) {
+            mViewHeight = getMeasuredHeight();
+        } else {
+            mViewWidth = getMeasuredWidth();
+        }
+//        strokPaint = getPaint();
+        mPaint = getPaint();
+        String mTipText = getText().toString();
+        mPaint.getTextBounds(mTipText, 0, mTipText.length(), mTextBound);
+        //前面4个参数分别表示渐变的开始x轴,开始y轴,结束的x轴,结束的y轴,mcolorList表示渐变的颜色数组
+        mLinearGradient = new LinearGradient(0, 0, mViewWidth, mViewHeight, mColorList, null, Shader.TileMode.CLAMP);
+        mPaint.setShader(mLinearGradient);
+
+//        if (mViewWidth == 0) {
+//            measure(0, 0);
+//            mViewWidth = (int) (getMeasuredWidth() + strokPaint.getStrokeWidth() * 2);
+//            setWidth(mViewWidth);
+//        }
+//        float y = getBaseline();
+//        float x = (mViewWidth - strokPaint.measureText(mTipText)) / 2;
+//
+        mPaint.setShadowLayer(mRadius, mdx, mdy, mColor);
+
+//        //画出投影
+//        canvas.drawText(mTipText, x, y, strokPaint);
+        //画出文字
+        canvas.drawText(mTipText, getMeasuredWidth() / 2 - mTextBound.width() / 2, getMeasuredHeight() / 2 + mTextBound.height() / 2, mPaint);
+    }
+
+    /**
+     * true表示纵向渐变,false变身横向渐变
+     *
+     * @param vertrial
+     */
+    public void setVertrial(boolean vertrial) {
+        isVertrial = vertrial;
+    }
+
+    /**
+     * 设置渐变的颜色
+     *
+     * @param mColorList
+     */
+    public void setmColorList(int[] mColorList) {
+        if (mColorList != null && mColorList.length < 2) {
+            throw new RuntimeException("mClorList's length must be > 2");
+        } else {
+
+            this.mColorList = mColorList;
+        }
+    }
+
+    /**
+     * @param strokeColor
+     * @param strokewidth
+     * @param shader
+     */
+//    public void setStyle(int strokeColor, float strokewidth, Shader shader) {
+//        strokPaint.setAntiAlias(true);
+//        // 设定是否使用图像抖动处理，会使绘制出来的图片颜色更加平滑和饱满，图像更加清晰
+//        strokPaint.setDither(true);
+//        // 如果该项设置为true，则图像在动画进行中会滤掉对Bitmap图像的优化操作，加快显示
+//        // 速度，本设置项依赖于dither和xfermode的设置
+//        strokPaint.setFilterBitmap(true);
+//
+//        strokPaint.setStrokeWidth(strokewidth);
+//        strokPaint.setColor(strokeColor);
+//        // 设置绘制时各图形的结合方式，如平滑效果等
+//        strokPaint.setStrokeJoin(Paint.Join.ROUND);
+//        // 当画笔样式为STROKE或FILL_OR_STROKE时，设置笔刷的图形样式，如圆形样式
+//        // Cap.ROUND,或方形样式Cap.SQUARE
+//        strokPaint.setStrokeCap(Paint.Cap.ROUND);
+//        strokPaint.setStyle(Paint.Style.STROKE);
+//
+//        float textsize = getTextSize();
+//        strokPaint.setTextSize(textsize);
+//    }
+
+    /**
+     * 设置投影层
+     * @param radius
+     * @param dx
+     * @param dy
+     * @param color
+     */
+    public void setShadowLayerCustom(float radius, float dx, float dy, int color) {
+        this.mRadius = radius;
+        this.mdx = dx;
+        this.mdy = dy;
+        this.mColor = color;
+    }
+}