Android.apis.graphics Drawing (citation)

Package com.example.android.apis.graphics;

23.TextAlign:

Set path path, Bezier curve

  // set path Path      Private Static void Makepath (Path p) {          P.moveto (0);          P.cubicto (100,-50, 200, 50, 300, 0); // Bézier curve     }

MPOs is the position coordinates of each character in the string.

  Private float[] buildtextpositions (String text,floaty, Paint paint) {          float[] widths =New float[Text.length ()]; //initially get the widths for each char          intn =paint.gettextwidths (text, widths); //Now popuplate the array, interleaving spaces for the Y values X is the width of the character          float[] pos =New float[N * 2]; floatAccumulatedx = 0;  for(inti = 0; I < n; i++) {pos[i* 2 + 0] =Accumulatedx; Pos[i* 2 + 1] =y; Accumulatedx+=Widths[i]; }          returnPOS; }

In the OnDraw () method:

Draw

  P.setcolor (0x80ff0000);               + DY * 3, p); // (x, y) is a baseline               P.setcolor (color.black);                Canvas.translate (0, DY);              P.settextalign (Paint.Align.LEFT);              Canvas.drawtext (text_l, x, Y, p); // at (x, y) point Paint.Align.LEFT,

Draw

Draw

  P.setcolor (0xbb00ff00);        for (int i = 0; i < POS.LENGTH/2; i++) {          * 2 + 0], Pos[i * 2 + 1]-DY, Pos[i * 2 + 0],              * 2 + 1] + DY * 2, p);      }      P.setcolor (color.black);        P.settextalign (Paint.Align.LEFT);      Canvas.drawpostext (Postext, POS, p);

Draw

  Canvas.drawpath (MPath, mpathpaint);              P.settextalign (Paint.Align.LEFT);               0, 0, p);               Canvas.translate (0, DY * 1.5f);               Canvas.drawpath (MPath, mpathpaint);              P.settextalign (Paint.Align.CENTER);              0, 0, p);               Canvas.translate (0, DY * 1.5f);              Canvas.drawpath (MPath, mpathpaint);              P.settextalign (Paint.Align.RIGHT);               0, 0, p);

24.Typefaces:

Get the font under Assets/fonts

  Mface = Typeface.createfromasset (GetContext (). Getassets (),              "Fonts/samplefont.ttf");

OnDraw () method

  @Override         protectedvoid  onDraw (canvas canvas) {              Canvas.drawcolor ( Color.White);                Mpaint.settypeface (null);              Canvas.drawtext ("Default", ten,mpaint);              Mpaint.settypeface (mface);             Canvas.drawtext ("Custom", ten, Max, mpaint);          }

25.UnicodeChart: (not seen)

26.Vertices: (not see) touch, picture shape

27.Xfermodes:

Round drawing:

  Static Bitmap makedst (intint  h) {          = bitmap.createbitmap (w, H, Bitmap.Config.ARGB_8888);           New  Canvas (BM);           New Paint (paint.anti_alias_flag);          P.setcolor (0xffffcc44);          C.drawoval (new rectf (0, 0, W * 3/4, H * 3/4), p);           return BM;      }

The drawing of a square:

  Static Bitmap makesrc (intint  h) {          = bitmap.createbitmap (w, H, Bitmap.Config.ARGB_8888);           New  Canvas (BM);           New Paint (paint.anti_alias_flag);            P.setcolor (0xff66aaff);           /3, H/3, W * 19/20, H * 19/20, p);           return BM;     }

Background mosaic:

  Bitmap BM = Bitmap.createbitmap (newint[] {0xFFFFFFFF, 0xFFCCCCCC,                  0xFFCCCCCC, 0xFFFFFFFF}, 2, 2, Bitmap.Config.RGB_565);               New Bitmapshader (BM, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);               New Matrix ();              M.setscale (6, 6); // zoom in 6 times times              Mbg.setlocalmatrix (m);

Xfermode array:

  Private Static Finalxfermode[] Smodes = {              NewPorterduffxfermode (PorterDuff.Mode.CLEAR),NewPorterduffxfermode (PorterDuff.Mode.SRC),NewPorterduffxfermode (PorterDuff.Mode.DST),NewPorterduffxfermode (PorterDuff.Mode.SRC_OVER),NewPorterduffxfermode (PorterDuff.Mode.DST_OVER),NewPorterduffxfermode (PorterDuff.Mode.SRC_IN),NewPorterduffxfermode (PorterDuff.Mode.DST_IN),NewPorterduffxfermode (PorterDuff.Mode.SRC_OUT),NewPorterduffxfermode (PorterDuff.Mode.DST_OUT),NewPorterduffxfermode (PorterDuff.Mode.SRC_ATOP),NewPorterduffxfermode (PorterDuff.Mode.DST_ATOP),NewPorterduffxfermode (PorterDuff.Mode.XOR),NewPorterduffxfermode (PorterDuff.Mode.DARKEN),NewPorterduffxfermode (PorterDuff.Mode.LIGHTEN),NewPorterduffxfermode (PorterDuff.Mode.MULTIPLY),NewPorterduffxfermode (PorterDuff.Mode.SCREEN)};

OnDraw () Method:

@Overrideprotected voidOnDraw (canvas canvas) {canvas.drawcolor (color.white); Paint Labelp=NewPaint (Paint.anti_alias_flag);                  Labelp.settextalign (Paint.Align.CENTER); Paint Paint=NewPaint (); Paint.setfilterbitmap (false); Canvas.translate (15, 35); intx = 0; inty = 0;  for(inti = 0; i < smodes.length; i++) {                  //Draw the BorderPaint.setstyle (Paint.Style.STROKE); Paint.setshader (NULL);//Pass Null to clear any previous shaderCanvas.drawrect (x-0.5f, y-0.5f, x + W + 0.5f, y + H + 0.5f, paint); //Draw the Checker-board patternPaint.setstyle (Paint.Style.FILL);                  Paint.setshader (MBG); Canvas.drawrect (x, y, x+ W, Y +H, paint); //Draw the src/dst example into our offscreen bitmap                  intsc = Canvas.savelayer (x, y, x + W, y + H,NULL, Canvas.matrix_save_flag|Canvas.clip_save_flag|Canvas.has_alpha_layer_save_flag|Canvas.full_color_layer_save_flag|Canvas.clip_to_layer_save_flag); //Canvas.save ();canvas.translate (x, y); Canvas.drawbitmap (MDSTB,0, 0, paint);                  Paint.setxfermode (Smodes[i]); Canvas.drawbitmap (MSRCB,0, 0, paint);

Android.apis.graphics Drawing (citation)