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      1 
      2 /*
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 #include "SampleCode.h"
      9 #include "SkView.h"
     10 #include "SkCanvas.h"
     11 #include "SkGradientShader.h"
     12 #include "SkGraphics.h"
     13 #include "SkImageDecoder.h"
     14 #include "SkPath.h"
     15 #include "SkRegion.h"
     16 #include "SkShader.h"
     17 #include "SkUtils.h"
     18 #include "SkXfermode.h"
     19 #include "SkColorPriv.h"
     20 #include "SkColorFilter.h"
     21 #include "SkTime.h"
     22 #include "SkTypeface.h"
     23 
     24 #include "SkOSFile.h"
     25 #include "SkStream.h"
     26 
     27 #include "SkGpuDevice.h"
     28 
     29 static void make_bitmap(SkBitmap* bitmap, GrContext* ctx) {
     30     SkCanvas canvas;
     31 
     32     if (ctx) {
     33         SkDevice* dev = new SkGpuDevice(ctx, SkBitmap::kARGB_8888_Config, 64, 64);
     34         canvas.setDevice(dev)->unref();
     35         *bitmap = dev->accessBitmap(false);
     36     } else {
     37         bitmap->setConfig(SkBitmap::kARGB_8888_Config, 64, 64);
     38         bitmap->allocPixels();
     39         canvas.setBitmapDevice(*bitmap);
     40     }
     41 
     42     canvas.drawColor(SK_ColorRED);
     43     SkPaint paint;
     44     paint.setAntiAlias(true);
     45     const SkPoint pts[] = { { 0, 0 }, { 64, 64 } };
     46     const SkColor colors[] = { SK_ColorWHITE, SK_ColorBLUE };
     47     paint.setShader(SkGradientShader::CreateLinear(pts, colors, NULL, 2,
     48                                                    SkShader::kClamp_TileMode))->unref();
     49     canvas.drawCircle(32, 32, 32, paint);
     50 }
     51 
     52 class BitmapRectView : public SampleView {
     53 public:
     54 	BitmapRectView() {
     55         this->setBGColor(SK_ColorGRAY);
     56     }
     57 
     58 protected:
     59     // overrides from SkEventSink
     60     virtual bool onQuery(SkEvent* evt) {
     61         if (SampleCode::TitleQ(*evt)) {
     62             SampleCode::TitleR(evt, "BitmapRect");
     63             return true;
     64         }
     65         return this->INHERITED::onQuery(evt);
     66     }
     67 
     68     virtual void onDrawContent(SkCanvas* canvas) {
     69         GrContext* ctx = SampleCode::GetGr();
     70 
     71         const SkIRect src[] = {
     72             { 0, 0, 32, 32 },
     73             { 0, 0, 80, 80 },
     74             { 32, 32, 96, 96 },
     75             { -32, -32, 32, 32, }
     76         };
     77 
     78         SkPaint paint;
     79         paint.setStyle(SkPaint::kStroke_Style);
     80         paint.setColor(ctx ? SK_ColorGREEN : SK_ColorYELLOW);
     81 
     82         SkBitmap bitmap;
     83         make_bitmap(&bitmap, ctx);
     84 
     85         SkRect dstR = { 0, 200, 128, 380 };
     86 
     87         canvas->translate(16, 40);
     88         for (size_t i = 0; i < SK_ARRAY_COUNT(src); i++) {
     89             SkRect srcR;
     90             srcR.set(src[i]);
     91 
     92             canvas->drawBitmap(bitmap, 0, 0, &paint);
     93             canvas->drawBitmapRect(bitmap, &src[i], dstR, &paint);
     94 
     95             canvas->drawRect(dstR, paint);
     96             canvas->drawRect(srcR, paint);
     97 
     98             canvas->translate(160, 0);
     99         }
    100     }
    101 
    102 private:
    103     typedef SkView INHERITED;
    104 };
    105 
    106 //////////////////////////////////////////////////////////////////////////////
    107 
    108 static SkView* MyFactory() { return new BitmapRectView; }
    109 static SkViewRegister reg(MyFactory);
    110 
    111