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
VisualInteractiveModule(VisualBench * owner)17 VisualInteractiveModule::VisualInteractiveModule(VisualBench* owner)
18 : INHERITED(owner)
19 , fCurrentMeasurement(0)
20 , fAdvance(false) {
21 memset(fMeasurements, 0, sizeof(fMeasurements));
22 }
23
renderFrame(SkCanvas * canvas,Benchmark * benchmark,int loops)24 void VisualInteractiveModule::renderFrame(SkCanvas* canvas, Benchmark* benchmark, int loops) {
25 benchmark->draw(loops, canvas);
26 this->drawStats(canvas);
27 canvas->flush();
28 }
29
drawStats(SkCanvas * canvas)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
timingFinished(Benchmark * benchmark,int loops,double measurement)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
onHandleChar(SkUnichar c)81 bool VisualInteractiveModule::onHandleChar(SkUnichar c) {
82 if (' ' == c) {
83 fAdvance = true;
84 }
85
86 return true;
87 }
88