1 /* 2 * Copyright 2015 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 "VisualInteractiveModule.h" 9 10 #include "SkCanvas.h" 11 #include "SkCommandLineFlags.h" 12 #include "SkForceLinking.h" 13 #include "SkImageDecoder.h" 14 15 __SK_FORCE_IMAGE_DECODER_LINKING; 16 17 VisualInteractiveModule::VisualInteractiveModule(VisualBench* owner) 18 : INHERITED(owner) 19 , fCurrentMeasurement(0) 20 , fAdvance(false) { 21 memset(fMeasurements, 0, sizeof(fMeasurements)); 22 } 23 24 void VisualInteractiveModule::renderFrame(SkCanvas* canvas, Benchmark* benchmark, int loops) { 25 benchmark->draw(loops, canvas); 26 this->drawStats(canvas); 27 canvas->flush(); 28 } 29 30 void VisualInteractiveModule::drawStats(SkCanvas* canvas) { 31 static const float kPixelPerMS = 2.0f; 32 static const int kDisplayWidth = 130; 33 static const int kDisplayHeight = 100; 34 static const int kDisplayPadding = 10; 35 static const int kGraphPadding = 3; 36 static const float kBaseMS = 1000.f / 60.f; // ms/frame to hit 60 fps 37 38 SkISize canvasSize = canvas->getDeviceSize(); 39 SkRect rect = SkRect::MakeXYWH(SkIntToScalar(canvasSize.fWidth-kDisplayWidth-kDisplayPadding), 40 SkIntToScalar(kDisplayPadding), 41 SkIntToScalar(kDisplayWidth), SkIntToScalar(kDisplayHeight)); 42 SkPaint paint; 43 canvas->clipRect(rect); 44 paint.setColor(SK_ColorBLACK); 45 canvas->drawRect(rect, paint); 46 // draw the 16ms line 47 paint.setColor(SK_ColorLTGRAY); 48 canvas->drawLine(rect.fLeft, rect.fBottom - kBaseMS*kPixelPerMS, 49 rect.fRight, rect.fBottom - kBaseMS*kPixelPerMS, paint); 50 paint.setColor(SK_ColorRED); 51 paint.setStyle(SkPaint::kStroke_Style); 52 canvas->drawRect(rect, paint); 53 54 int x = SkScalarTruncToInt(rect.fLeft) + kGraphPadding; 55 const int xStep = 2; 56 const int startY = SkScalarTruncToInt(rect.fBottom); 57 int i = fCurrentMeasurement; 58 do { 59 int endY = startY - (int)(fMeasurements[i] * kPixelPerMS + 0.5); // round to nearest value 60 canvas->drawLine(SkIntToScalar(x), SkIntToScalar(startY), 61 SkIntToScalar(x), SkIntToScalar(endY), paint); 62 i++; 63 i &= (kMeasurementCount - 1); // fast mod 64 x += xStep; 65 } while (i != fCurrentMeasurement); 66 67 } 68 69 bool VisualInteractiveModule::timingFinished(Benchmark* benchmark, int loops, double measurement) { 70 // Record measurements 71 fMeasurements[fCurrentMeasurement++] = measurement; 72 fCurrentMeasurement &= (kMeasurementCount-1); // fast mod 73 SkASSERT(fCurrentMeasurement < kMeasurementCount); 74 if (fAdvance) { 75 fAdvance = false; 76 return true; 77 } 78 return false; 79 } 80 81 bool VisualInteractiveModule::onHandleChar(SkUnichar c) { 82 if (' ' == c) { 83 fAdvance = true; 84 } 85 86 return true; 87 } 88
