小画板 Android java

package com.project.sketchpad.view; import java.util.ArrayList; import com.project.sketchpad.Activity.SketchpadMainActivity; import com.project.sketchpad.Contral.BitmapCtl; import com.project.sketchpad.Contral.BitmapUtil; import com.project.sketchpad.Contral.Circlectl; import com.project.sketchpad.Contral.EraserCtl; import com.project.sketchpad.Contral.LineCtl; import com.project.sketchpad.Contral.OvaluCtl; import com.project.sketchpad.Contral.PenuCtl; import com.project.sketchpad.Contral.PlygonCtl; import com.project.sketchpad.Contral.RectuCtl; import com.project.sketchpad.Contral.Spraygun; import com.project.sketchpad.data.CommonDef; import com.project.sketchpad.interfaces.ISketchpadDraw; import com.project.sketchpad.interfaces.IUndoRedoCommand; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Rect; import android.graphics.RectF; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; /**function:实现图形的绘制与显示 * @author :xiangminda;zhaoshuming;wangjian;zhoutianliang;shihongyan; *Date:2011/7/18-27 */ public class SketchpadView extends View implements IUndoRedoCommand{ //设置画笔常量 public static final int STROKE_PEN = 12; //画笔1 public static final int STROKE_ERASER = 2; //橡皮擦2 public static final int STROKE_PLYGON = 10; //多边形3 public static final int STROKE_RECT = 9; //矩形 4 public static final int STROKE_CIRCLE = 8; //圆 5 public static final int STROKE_OVAL = 7; //椭圆 6 public static final int STROKE_LINE = 6; //直线7 public static final int STROKE_SPRAYGUN=5; //喷枪8 public static final int STROKE_PAINTPOT=4; //油漆桶9 public static int flag =0; //油漆桶参数 public static final int UNDO_SIZE = 20; //撤销栈的大小 public static final int BITMAP_WIDTH = 650; //画布高 public static final int BITMAP_HEIGHT = 400; //画布宽 private int m_strokeType = STROKE_PEN; //画笔风格 private static int m_strokeColor = Color.RED; //画笔颜色 private static int m_penSize = CommonDef.SMALL_PEN_WIDTH; //画笔大小 private static int m_eraserSize = CommonDef.LARGE_ERASER_WIDTH; //橡皮擦大小 //实例新画布 private boolean m_isEnableDraw = true; //标记是否可以画 private boolean m_isDirty = false; //标记 private boolean m_isTouchUp = false; //标记是否鼠标弹起 private boolean m_isSetForeBmp = false; //标记是否设置了前bitmap private int m_bkColor = Color.WHITE; //背景色 private int m_canvasWidth = 100; //画布宽 private int m_canvasHeight = 100; //画布高 private boolean m_canClear = true; //标记是否可清除 private Bitmap m_foreBitmap = null; //用于显示的bitmap private Bitmap m_tempForeBitmap = null; //用于缓冲的bitmap private Bitmap m_bkBitmap = null; //用于背后画的bitmap private Canvas m_canvas; //画布 private Paint m_bitmapPaint = null; //画笔 private SketchPadUndoStack m_undoStack = null;//栈存放执行的操作 private ISketchpadDraw m_curTool = null; //记录操作的对象画笔类 int antiontemp = 0;//获取鼠标点击画布的event boolean myLoop = false;// 喷枪结束标识符 ///////////////// paint and Bk////////////////////////////// //画布参数设计 public boolean isDirty(){ return m_isDirty; // } public void setDrawStrokeEnable(boolean isEnable){ m_isEnableDraw = isEnable; //确定是否可绘图 } public void setBkColor(int color){ //设置背景颜色 if (m_bkColor != color){ m_bkColor = color; invalidate(); } } public static void setStrokeSize(int size, int type){ //设置画笔的大小和橡皮擦大小 switch(type){ case STROKE_PEN: m_penSize = size; break; case STROKE_ERASER: m_eraserSize = size; break; } } public static void setStrokeColor(int color){ //设置画笔颜色 m_strokeColor = color; } public static int getStrokeSize(){ //得到画笔的大小 return m_penSize; } public static int getEraser(){ //得到橡皮擦的大小 return m_eraserSize; } public static int getStrokeColor(){ //得到画笔的大小 return m_strokeColor; } //////////////////////////////////////////////////////////// public void clearAllStrokes(){ //清空设置 if (m_canClear){ // 清空撤销栈 m_undoStack.clearAll(); // 设置当前的bitmap对象为空 if (null != m_tempForeBitmap){ m_tempForeBitmap.recycle(); m_tempForeBitmap = null; } // Create a new fore bitmap and set to canvas. createStrokeBitmap(m_canvasWidth, m_canvasHeight); invalidate(); m_isDirty = true; m_canClear = false; } } ///////////////////////bitmap///////////////////// /*保存时对当前绘图板的图片进行快照*/ public Bitmap getCanvasSnapshot(){ setDrawingCacheEnabled(true); buildDrawingCache(true); Bitmap bmp = getDrawingCache(true); if (null == bmp){ android.util.Log.d("leehong2", "getCanvasSnapshot getDrawingCache == null"); } return BitmapUtil.duplicateBitmap(bmp); } /*打开图像文件时，设置当前视图为foreBitmap*/ public void setForeBitmap(Bitmap foreBitmap){ if (foreBitmap != m_foreBitmap && null != foreBitmap){ // Recycle the bitmap. if (null != m_foreBitmap){ m_foreBitmap.recycle(); } // Here create a new fore bitmap to avoid crashing when set bitmap to canvas. m_foreBitmap = BitmapUtil.duplicateBitmap(foreBitmap); if (null != m_foreBitmap && null != m_canvas){ m_canvas.setBitmap(m_foreBitmap); } invalidate(); } } public Bitmap getForeBitmap(){ return m_bkBitmap; } public void setBkBitmap(Bitmap bmp){ //设置背景bitmap if (m_bkBitmap != bmp){ m_bkBitmap = bmp; invalidate(); } } public Bitmap getBkBitmap(){ return m_bkBitmap; } protected void createStrokeBitmap(int w, int h){ m_canvasWidth = w; m_canvasHeight = h; Bitmap bitmap = Bitmap.createBitmap(m_canvasWidth, m_canvasHeight, Bitmap.Config.ARGB_8888); if (null != bitmap){ m_foreBitmap = bitmap; // Set the fore bitmap to m_canvas to be as canvas of strokes. m_canvas.setBitmap(m_foreBitmap); } } protected void setTempForeBitmap(Bitmap tempForeBitmap){ if (null != tempForeBitmap){ if (null != m_foreBitmap){ m_foreBitmap.recycle(); } m_foreBitmap = BitmapCtl.duplicateBitmap(tempForeBitmap); if (null != m_foreBitmap && null != m_canvas) { m_canvas.setBitmap(m_foreBitmap); invalidate(); } } } protected void setCanvasSize(int width, int height) {//设置画布大小 if (width > 0 && height > 0){ if (m_canvasWidth != width || m_canvasHeight != height){ m_canvasWidth = width; m_canvasHeight = height; createStrokeBitmap(m_canvasWidth, m_canvasHeight); } } } //初始化数据 调用 protected void initialize(){ m_canvas = new Canvas();//实例画布用于整个绘图操作 m_bitmapPaint = new Paint(Paint.ANTI_ALIAS_FLAG); //实例化画笔用于bitmap设置画布canvas m_undoStack = new SketchPadUndoStack(this, UNDO_SIZE);//实例