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      1 /*
      2  * Copyright 2014 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "gm.h"
      9 #include "SkPaint.h"
     10 #include "SkPath.h"
     11 #include "SkPictureRecorder.h"
     12 
     13 static sk_sp<SkPicture> make_picture() {
     14     SkPictureRecorder rec;
     15     SkCanvas* canvas = rec.beginRecording(100, 100);
     16 
     17     SkPaint paint;
     18     paint.setAntiAlias(true);
     19     SkPath path;
     20 
     21     paint.setColor(0x800000FF);
     22     canvas->drawRect(SkRect::MakeWH(100, 100), paint);
     23 
     24     paint.setColor(0x80FF0000);
     25     path.moveTo(0, 0); path.lineTo(100, 0); path.lineTo(100, 100);
     26     canvas->drawPath(path, paint);
     27 
     28     paint.setColor(0x8000FF00);
     29     path.reset(); path.moveTo(0, 0); path.lineTo(100, 0); path.lineTo(0, 100);
     30     canvas->drawPath(path, paint);
     31 
     32     paint.setColor(0x80FFFFFF);
     33     paint.setBlendMode(SkBlendMode::kPlus);
     34     canvas->drawRect(SkRect::MakeXYWH(25, 25, 50, 50), paint);
     35 
     36     return rec.finishRecordingAsPicture();
     37 }
     38 
     39 // Exercise the optional arguments to drawPicture
     40 //
     41 class PictureGM : public skiagm::GM {
     42 public:
     43     PictureGM()
     44         : fPicture(nullptr)
     45     {}
     46 
     47 protected:
     48     void onOnceBeforeDraw() override {
     49          fPicture = make_picture();
     50     }
     51 
     52     SkString onShortName() override {
     53         return SkString("pictures");
     54     }
     55 
     56     SkISize onISize() override {
     57         return SkISize::Make(450, 120);
     58     }
     59 
     60     void onDraw(SkCanvas* canvas) override {
     61         canvas->translate(10, 10);
     62 
     63         SkMatrix matrix;
     64         SkPaint paint;
     65 
     66         canvas->drawPicture(fPicture);
     67 
     68         matrix.setTranslate(110, 0);
     69         canvas->drawPicture(fPicture, &matrix, nullptr);
     70 
     71         matrix.postTranslate(110, 0);
     72         canvas->drawPicture(fPicture, &matrix, &paint);
     73 
     74         paint.setAlpha(0x80);
     75         matrix.postTranslate(110, 0);
     76         canvas->drawPicture(fPicture, &matrix, &paint);
     77     }
     78 
     79 private:
     80     sk_sp<SkPicture> fPicture;
     81 
     82     typedef skiagm::GM INHERITED;
     83 };
     84 
     85 DEF_GM(return new PictureGM;)
     86