Beispiel #1
0
 void myDraw() {
   float width, height;
   width = getMeasuredWidth();
   height = getMeasuredHeight();
   canvas = holder.lockCanvas();
   canvas.drawColor(Color.GREEN);
   canvas.drawPath(path, paint);
   holder.unlockCanvasAndPost(canvas);
 }
Beispiel #2
0
  public void mDraw() {

    mCanvas = mHolder.lockCanvas(); // 获得画布对象,开始对画布画画

    mCanvas.drawColor(++i); // 设置画布颜色为黑色

    canvasMethod(mCanvas); // 调用自定义的方法,主要是在传进去的画布对象上画画

    mHolder.unlockCanvasAndPost(mCanvas); // 把画布显示在屏幕上
  }
Beispiel #3
0
  protected void onDraw(Canvas cs) {
    super.onDraw(cs);

    // 描画方法の設定
    Paint p = new Paint();
    p.setColor(Color.BLACK);
    p.setStyle(Paint.Style.FILL);
    p.setStrokeWidth(8);

    // 円の描画
    cs.drawCircle(x, y, 50, p);
  }
Beispiel #4
0
  public void draw() {
    Bitmap bitmap = Bitmap.createBitmap(200, 200, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);

    RectF rect = new RectF(8, 8, 192, 192);

    Paint p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.STROKE);
    p.setColor(ColS);
    p.setStrokeWidth(16);

    int S = 162;
    int H = 300;

    // S
    canvas.drawArc(rect, -90, S, false, p);

    p.setStyle(Paint.Style.FILL);
    p.setColor(ColM);

    H -= 90;
    canvas.drawCircle(100, 100, 72, p);

    p.setColor(ColH);
    p.setStrokeWidth(2);

    float sx, sy;
    sx = (float) (72 * Math.cos(Math.PI * H / 180));
    sy = (float) (72 * Math.sin(Math.PI * H / 180));

    canvas.drawLine(100, 100, sx + 100, sy + 100, p);

    ImageView clokImg;

    clokImg = (ImageView) findViewById(R.id.clokImage);
    clokImg.setImageBitmap(bitmap);

    // Hour picker
    Bitmap ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
    Canvas ColPickCanvas = new Canvas(ColPickBmp);
    ImageView colPickImg = (ImageView) findViewById(R.id.colorHou);

    rect = new RectF(0, 0, 80, 50);

    p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.FILL);
    p.setColor(ColH);
    ColPickCanvas.drawRect(rect, p);

    colPickImg.setImageBitmap(ColPickBmp);

    // Minute picker
    ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
    ColPickCanvas = new Canvas(ColPickBmp);
    colPickImg = (ImageView) findViewById(R.id.colorMin);

    rect = new RectF(0, 0, 80, 50);

    p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.FILL);
    p.setColor(ColM);
    ColPickCanvas.drawRect(rect, p);

    colPickImg.setImageBitmap(ColPickBmp);

    // Second picker
    ColPickBmp = Bitmap.createBitmap(80, 50, Bitmap.Config.ARGB_8888);
    ColPickCanvas = new Canvas(ColPickBmp);
    colPickImg = (ImageView) findViewById(R.id.colorSec);

    rect = new RectF(0, 0, 80, 50);

    p = new Paint();
    p.setAntiAlias(true);
    p.setStyle(Paint.Style.FILL);
    p.setColor(ColS);
    ColPickCanvas.drawRect(rect, p);

    colPickImg.setImageBitmap(ColPickBmp);
  }
Beispiel #5
0
  /**
   * 自定义的方法,简单绘制一些基本图形
   *
   * @param mCanvas 把图形画在mCanvas上
   */
  public void canvasMethod(Canvas mCanvas) {

    // 创建对应坐标的矩形区域
    RectF mArc = new RectF(mX, mY - 70, mX + 50, mY - 20);
    // 画填充弧,在矩形区域内,从弧的最右边开始,画270度,然后再通过连接圆心来填充
    mCanvas.drawArc(mArc, 0, 270, true, mPaint);

    // 获得icon的Bitmap对象
    Bitmap mBitmap = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);
    // 画图片
    mCanvas.drawBitmap(mBitmap, mX, mY, mPaint);

    // 画圆,(x轴,y轴,半径,画笔)
    mCanvas.drawCircle(mX + 10, mY + 60, 10, mPaint);

    // 画一条线,(起点横坐标,起点纵坐标,终点横坐标,终点纵坐标,画笔)
    mCanvas.drawLine(mX, mY + 75, mX + 20, mY + 75, mPaint);
    // 画多条线,(坐标数组,画笔)坐标数组里每四个值构成一条线
    mCanvas.drawLines(
        new float[] {mX + 50, mY + 45, mX + 50, mY + 75, mX + 60, mY + 45, mX + 60, mY + 75},
        mPaint);

    // 创建对应矩形区域
    RectF mOval = new RectF(mX, mY + 80, mX + 60, mY + 110);
    // 画椭圆
    mCanvas.drawOval(mOval, mPaint);

    /*
     * Paint qPaint = new Paint(); qPaint.setColor(Color.RED);
     * mCanvas.drawPaint(qPaint);
     */

    // 重置Path里的所有路径
    mPath.reset();
    // 设置Path的起点
    mPath.moveTo(mX, mY + 120);
    // 第二个点
    mPath.lineTo(screenW - 10, mY + 120);
    // 第三个点
    mPath.lineTo(screenW - 10, mY + 150);
    // 画出路径,这里画的是三角形
    mCanvas.drawPath(mPath, mPaint);

    // 重置Path里的所有路径
    qPath.reset();
    // 设置Path的起点
    qPath.moveTo(qStartX, qStartY);
    // 设置贝塞尔曲线的控制点坐标和终点坐标
    qPath.quadTo(qControlX, qCOntrolY, qEndX, qEndY);
    // 画出贝塞尔曲线
    mCanvas.drawPath(qPath, qPaint);

    // 画点
    mCanvas.drawPoint(mX, mY + 155, qPaint);
    // 画多个点,坐标数组每两个值代表一个点的坐标
    mCanvas.drawPoints(new float[] {mX, mY + 160, mX + 5, mY + 160, mX + 5, mY + 160}, qPaint);

    // 画矩形
    mCanvas.drawRect(mX, mY + 170, mX + 100, mY + 220, mPaint);

    // 设置矩形区域
    RectF mRect = new RectF(mX, mY + 230, mX + 100, mY + 260);
    // 画圆角矩形,这个方法的第二第三个参数在后面有图讲解
    mCanvas.drawRoundRect(mRect, 10, 10, mPaint);

    // 画文本
    mCanvas.drawText("drawText", mX, mY + 290, mPaint);
    // 画文本,数组里每两个值代表文本的一个字符的坐标,数组的坐标可以比字符串里的字符多,但不可以少
    mCanvas.drawPosText(
        "哈哈你好",
        new float[] {mX, mY + 310, mX + 20, mY + 310, mX + 40, mY + 310, mX + 60, mY + 310},
        mPaint);

    // 重置Path
    tPath.reset();
    // 添加一个圆形路径,坐标,半径,方向(顺时针还是逆时针)
    tPath.addCircle(mX + 10, mY + 340, 10, Path.Direction.CW);
    // 画出路径
    mCanvas.drawPath(tPath, qPaint);
    // 把文本画在路径上,但不会画出路径
    mCanvas.drawTextOnPath("draw", tPath, 30, 0, mPaint);
  }
 public void onDraw(Canvas c) {
   super.onDraw(c);
   if (locMap != null) c.drawBitmap(locMap, matrix, null);
 }
  public void run() {
    int x, y;
    Bitmap locTile;
    Canvas canvas;
    float useLon, useLat, useLonMax, useLatMax;

    System.gc();
    if ((useOverlay.tileX == 0) && (useOverlay.tileY == 0)) return;
    mapThreadRunning = true;
    try {
      if (locMap == null)
        locMap = Bitmap.createBitmap(tileWidth * 256, tileHeight * 256, Bitmap.Config.ARGB_8888);
    } catch (OutOfMemoryError oome) {
      return;
    }
    locMap.eraseColor(Color.BLACK);
    canvas = new Canvas(locMap);

    useLon =
        (GeoUtils.tilex2long(useOverlay.tileX, useOverlay.m_zoom)
                + GeoUtils.tilex2long(useOverlay.tileX + 1, useOverlay.m_zoom))
            / 2.0f;
    useLat =
        (GeoUtils.tiley2lat(useOverlay.tileY, useOverlay.m_zoom)
                + GeoUtils.tiley2lat(useOverlay.tileY + 1, useOverlay.m_zoom))
            / 2.0f;

    while (mScaleFactor >= 2.0) {
      mScaleFactor /= 2.0f;
      useOverlay.m_zoom++;
      if (useOverlay.m_zoom > 17) {
        useOverlay.m_zoom = 17;
        imgOffsetX -= (scrWidth - (scrWidth * 2.0)) / 2.0;
        imgOffsetY -= (scrHeight - (scrHeight * 2.0)) / 2.0;
      }
    }
    while (mScaleFactor <= 0.5) {
      mScaleFactor *= 2.0f;
      useOverlay.m_zoom--;
      if (useOverlay.m_zoom < 3) {
        useOverlay.m_zoom = 3;
        imgOffsetX -= (scrWidth - (scrWidth * 2.0)) / 2.0;
        imgOffsetY -= (scrHeight - (scrHeight * 2.0)) / 2.0;
      }
    }
    mScaleFactor = 1.0f;

    /*      if ((wasScaleOp) && (lonCenter!=0.0f) && (latCenter!=0.0f))
    {
       tileX=GeoUtils.long2tilex(lonCenter,m_zoom);
       tileY=GeoUtils.lat2tiley(latCenter,m_zoom);

       tileX-=(scrWidth / 256);
       tileY-=(scrWidth / 256);
    }
    else*/
    {
      useOverlay.tileX = GeoUtils.long2tilex(useLon, useOverlay.m_zoom);
      useOverlay.tileY = GeoUtils.lat2tiley(useLat, useOverlay.m_zoom);
    }
    useLon = GeoUtils.tilex2long(useOverlay.tileX - 1, useOverlay.m_zoom);
    useLat = GeoUtils.tiley2lat(useOverlay.tileY - 1, useOverlay.m_zoom);
    useLonMax = GeoUtils.tilex2long(useOverlay.tileX + tileWidth + 1, useOverlay.m_zoom);
    useLatMax = GeoUtils.tiley2lat(useOverlay.tileY + tileHeight + 1, useOverlay.m_zoom);

    /*      if (imgOffsetX>scrWidth)
    {
       imgOffsetX=scrWidth/2;
    }
    if (imgOffsetX<=-scrWidth)
    {
       imgOffsetX=-scrWidth/2;
    }
    if (imgOffsetY>scrHeight)
    {
       imgOffsetY=scrHeight/2;
    }
    if (imgOffsetY<=-scrHeight)
    {
       imgOffsetY=-scrHeight/2;
    }*/

    while (imgOffsetX > 0) {
      imgOffsetX -= 256.0f;
      useOverlay.tileX--;
    }
    while (imgOffsetX <= -256.0) {
      imgOffsetX += 256.0f;
      useOverlay.tileX++;
    }
    while (imgOffsetY > 0) {
      imgOffsetY -= 256.0f;
      useOverlay.tileY--;
    }
    while (imgOffsetY <= -256.0) {
      imgOffsetY += 256.0f;
      useOverlay.tileY++;
    }

    // calculate lat/lon of screen center point
    /*      {
       int useTileX=tileX,useTileY=tileY;

       x=(int)((scrWidth/2.0f)+imgOffsetX);
       y=(int)((scrHeight/2.0f)+imgOffsetY);

       useTileX+=(x / 256);
       x=x % 256;
       useTileY+=(y / 256);
       y=y % 256;

       float tileLon1=GeoUtils.tilex2long(useTileX,m_zoom);
       float tileLat1=GeoUtils.tiley2lat(useTileY,m_zoom);
       float tileLon2=GeoUtils.tilex2long(useTileX+1,m_zoom);
       float tileLat2=GeoUtils.tiley2lat(useTileY+1,m_zoom);

       lonCenter=(((tileLon2-tileLon1)/256.0f)*x)+tileLon1;
       latCenter=(((tileLat2-tileLat1)/256.0f)*y)+tileLat1;
    }*/

    matrix.setTranslate(imgOffsetX, imgOffsetY);
    breakMapThread = false;
    mapThreadRunning = false;
    for (x = 0; x < tileWidth; x++)
      for (y = 0; y < tileHeight; y++) {
        if (breakMapThread) return;
        locTile =
            geoUtils.loadMapTile(
                getContext(),
                useOverlay.tileX + x,
                useOverlay.tileY + y,
                useOverlay.m_zoom,
                allowNetAccess);
        if (locTile != null) canvas.drawBitmap(locTile, x * 256, y * 256, null);
        postInvalidate();
      }
    useOverlay.doDraw(canvas, useLon, useLonMax, useLat, useLatMax, locMap);
    postInvalidate();
    System.gc();
  }