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skiagm::PolygonsGM Class Reference
Inheritance diagram for skiagm::PolygonsGM:
skiagm::GM

Public Member Functions

 PolygonsGM ()
 
- Public Member Functions inherited from skiagm::GM
 GM (SkColor backgroundColor=SK_ColorWHITE)
 
virtual ~GM ()
 
void setMode (Mode mode)
 
Mode getMode () const
 
DrawResult gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
 
void gpuTeardown ()
 
void onceBeforeDraw ()
 
DrawResult draw (SkCanvas *canvas)
 
DrawResult draw (SkCanvas *, SkString *errorMsg)
 
void drawBackground (SkCanvas *)
 
DrawResult drawContent (SkCanvas *canvas)
 
DrawResult drawContent (SkCanvas *, SkString *errorMsg)
 
virtual SkISize getISize ()=0
 
virtual SkString getName () const =0
 
virtual bool runAsBench () const
 
SkScalar width ()
 
SkScalar height ()
 
SkColor getBGColor () const
 
void setBGColor (SkColor)
 
void drawSizeBounds (SkCanvas *, SkColor)
 
bool animate (double)
 
virtual bool onChar (SkUnichar)
 
bool getControls (SkMetaData *controls)
 
void setControls (const SkMetaData &controls)
 
virtual void modifyGrContextOptions (GrContextOptions *)
 
virtual void modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
 
virtual bool isBazelOnly () const
 
virtual std::map< std::string, std::string > getGoldKeys () const
 

Protected Member Functions

SkString getName () const override
 
SkISize getISize () override
 
void onOnceBeforeDraw () override
 
void onDraw (SkCanvas *canvas) override
 
- Protected Member Functions inherited from skiagm::GM
virtual DrawResult onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
 
virtual void onGpuTeardown ()
 
virtual void onOnceBeforeDraw ()
 
virtual DrawResult onDraw (SkCanvas *, SkString *errorMsg)
 
virtual void onDraw (SkCanvas *)
 
virtual bool onAnimate (double)
 
virtual bool onGetControls (SkMetaData *)
 
virtual void onSetControls (const SkMetaData &)
 
GraphiteTestContext * graphiteTestContext () const
 

Static Protected Member Functions

static void SetLocation (SkCanvas *canvas, int counter, int lineNum)
 
static void SetColorAndAlpha (SkPaint *paint, SkRandom *rand)
 

Additional Inherited Members

- Public Types inherited from skiagm::GM
enum  Mode { kGM_Mode , kSample_Mode , kBench_Mode }
 
using DrawResult = skiagm::DrawResult
 
using GraphiteTestContext = skiatest::graphite::GraphiteTestContext
 
- Static Public Attributes inherited from skiagm::GM
static constexpr char kErrorMsg_DrawSkippedGpuOnly []
 

Detailed Description

Definition at line 28 of file polygons.cpp.

Constructor & Destructor Documentation

◆ PolygonsGM()

skiagm::PolygonsGM::PolygonsGM ( )
inline

Definition at line 30 of file polygons.cpp.

30{}

Member Function Documentation

◆ getISize()

SkISize skiagm::PolygonsGM::getISize ( )
inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 35 of file polygons.cpp.

35 {
36 int width = kNumPolygons * kCellSize + 40;
37 int height = (kNumJoins * kNumStrokeWidths + kNumExtraStyles) * kCellSize + 40;
38 return SkISize::Make(width, height);
39 }
skiagm::GM::width
SkScalar width()
Definition: gm.h:159
skiagm::GM::height
SkScalar height()
Definition: gm.h:162
SkISize::Make
static constexpr SkISize Make(int32_t w, int32_t h)
Definition: SkSize.h:20

◆ getName()

SkString skiagm::PolygonsGM::getName ( ) const
inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 33 of file polygons.cpp.

33{ return SkString("polygons"); }

◆ onDraw()

void skiagm::PolygonsGM::onDraw ( SkCanvas *  canvas)
inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 104 of file polygons.cpp.

104 {
105 // Stroke widths are:
106 // 0(may use hairline rendering), 10(common case for stroke-style)
107 // 40(>= geometry width/height, make the contour filled in fact)
108 constexpr int kStrokeWidths[] = {0, 10, 40};
109 SkASSERT(kNumStrokeWidths == std::size(kStrokeWidths));
110
111 constexpr SkPaint::Join kJoins[] = {
112 SkPaint::kMiter_Join, SkPaint::kRound_Join, SkPaint::kBevel_Join
113 };
114 SkASSERT(kNumJoins == std::size(kJoins));
115
116 int counter = 0;
117 SkPaint paint;
118 paint.setAntiAlias(true);
119
120 SkRandom rand;
121 // For stroke style painter
122 paint.setStyle(SkPaint::kStroke_Style);
123 for (int join = 0; join < kNumJoins; ++join) {
124 for (int width = 0; width < kNumStrokeWidths; ++width) {
125 for (int i = 0; i < fPolygons.size(); ++i) {
126 canvas->save();
127 SetLocation(canvas, counter, fPolygons.size());
128
129 SetColorAndAlpha(&paint, &rand);
130 paint.setStrokeJoin(kJoins[join]);
131 paint.setStrokeWidth(SkIntToScalar(kStrokeWidths[width]));
132
133 canvas->drawPath(fPolygons[i], paint);
134 canvas->restore();
135 ++counter;
136 }
137 }
138 }
139
140 // For stroke-and-fill style painter and fill style painter
141 constexpr SkPaint::Style kStyles[] = {
142 SkPaint::kStrokeAndFill_Style, SkPaint::kFill_Style
143 };
144 SkASSERT(kNumExtraStyles == std::size(kStyles));
145
146 paint.setStrokeJoin(SkPaint::kMiter_Join);
147 paint.setStrokeWidth(SkIntToScalar(20));
148 for (int style = 0; style < kNumExtraStyles; ++style) {
149 paint.setStyle(kStyles[style]);
150 for (int i = 0; i < fPolygons.size(); ++i) {
151 canvas->save();
152 SetLocation(canvas, counter, fPolygons.size());
153 SetColorAndAlpha(&paint, &rand);
154 canvas->drawPath(fPolygons[i], paint);
155 canvas->restore();
156 ++counter;
157 }
158 }
159 }
SkASSERT
#define SkASSERT(cond)
Definition: SkAssert.h:116
SkIntToScalar
#define SkIntToScalar(x)
Definition: SkScalar.h:57
SkCanvas::restore
void restore()
Definition: SkCanvas.cpp:461
SkCanvas::save
int save()
Definition: SkCanvas.cpp:447
SkCanvas::drawPath
void drawPath(const SkPath &path, const SkPaint &paint)
Definition: SkCanvas.cpp:1747
SkPaint::kStroke_Style
@ kStroke_Style
set to stroke geometry
Definition: SkPaint.h:194
SkPaint::kFill_Style
@ kFill_Style
set to fill geometry
Definition: SkPaint.h:193
SkPaint::kStrokeAndFill_Style
@ kStrokeAndFill_Style
sets to stroke and fill geometry
Definition: SkPaint.h:195
SkPaint::kRound_Join
@ kRound_Join
adds circle
Definition: SkPaint.h:360
SkPaint::kMiter_Join
@ kMiter_Join
extends to miter limit
Definition: SkPaint.h:359
SkPaint::kBevel_Join
@ kBevel_Join
connects outside edges
Definition: SkPaint.h:361
skia_private::TArray::size
int size() const
Definition: SkTArray.h:421
skiagm::PolygonsGM::SetColorAndAlpha
static void SetColorAndAlpha(SkPaint *paint, SkRandom *rand)
Definition: polygons.cpp:95
skiagm::PolygonsGM::SetLocation
static void SetLocation(SkCanvas *canvas, int counter, int lineNum)
Definition: polygons.cpp:89
paint
const Paint & paint
Definition: color_source.cc:38
i
int i
Definition: fl_socket_accessible.cc:18
flutter::size
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Definition: switches.h:259
join
static SkString join(const CommandLineFlags::StringArray &)
Definition: skpbench.cpp:741

◆ onOnceBeforeDraw()

void skiagm::PolygonsGM::onOnceBeforeDraw ( )
inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 42 of file polygons.cpp.

42 {
43 SkPoint p0[] = {{0, 0}, {60, 0}, {90, 40}}; // triangle
44 SkPoint p1[] = {{0, 0}, {0, 40}, {60, 40}, {40, 0}}; // trapezoid
45 SkPoint p2[] = {{0, 0}, {40, 40}, {80, 40}, {40, 0}}; // diamond
46 SkPoint p3[] = {{10, 0}, {50, 0}, {60, 10}, {60, 30}, {50, 40},
47 {10, 40}, {0, 30}, {0, 10}}; // octagon
48 SkPoint p4[32]; // circle-like polygons with 32-edges.
49 SkPoint p5[] = {{0, 0}, {20, 20}, {0, 40}, {60, 20}}; // concave polygon with 4 edges
50 SkPoint p6[] = {{0, 40}, {0, 30}, {15, 30}, {15, 20}, {30, 20},
51 {30, 10}, {45, 10}, {45, 0}, {60, 0}, {60, 40}}; // stairs-like polygon
52 SkPoint p7[] = {{0, 20}, {20, 20}, {30, 0}, {40, 20}, {60, 20},
53 {45, 30}, {55, 50}, {30, 40}, {5, 50}, {15, 30}}; // five-point stars
54
55 for (size_t i = 0; i < std::size(p4); ++i) {
56 SkScalar angle = 2 * SK_ScalarPI * i / std::size(p4);
57 p4[i].set(20 * SkScalarCos(angle) + 20, 20 * SkScalarSin(angle) + 20);
58 }
59
60 struct Polygons {
61 SkPoint* fPoints;
62 size_t fPointNum;
63 } pgs[] = {
64 { p0, std::size(p0) },
65 { p1, std::size(p1) },
66 { p2, std::size(p2) },
67 { p3, std::size(p3) },
68 { p4, std::size(p4) },
69 { p5, std::size(p5) },
70 { p6, std::size(p6) },
71 { p7, std::size(p7) }
72 };
73
74 SkASSERT(std::size(pgs) == kNumPolygons);
75 for (size_t pgIndex = 0; pgIndex < std::size(pgs); ++pgIndex) {
76 SkPathBuilder b;
77 b.moveTo(pgs[pgIndex].fPoints[0].fX,
78 pgs[pgIndex].fPoints[0].fY);
79 for (size_t ptIndex = 1; ptIndex < pgs[pgIndex].fPointNum; ++ptIndex) {
80 b.lineTo(pgs[pgIndex].fPoints[ptIndex].fX,
81 pgs[pgIndex].fPoints[ptIndex].fY);
82 }
83 b.close();
84 fPolygons.push_back(b.detach());
85 }
86 }
SkScalarSin
#define SkScalarSin(radians)
Definition: SkScalar.h:45
SkScalarCos
#define SkScalarCos(radians)
Definition: SkScalar.h:46
SK_ScalarPI
#define SK_ScalarPI
Definition: SkScalar.h:21
skia_private::TArray::push_back
T & push_back()
Definition: SkTArray.h:205
SkScalar
float SkScalar
Definition: extension.cpp:12
b
static bool b
Definition: ffi_native_test_module.c:74
SkPoint::set
void set(float x, float y)
Definition: SkPoint_impl.h:200

◆ SetColorAndAlpha()

static void skiagm::PolygonsGM::SetColorAndAlpha ( SkPaint *  paint,
SkRandom *  rand 
)
inlinestaticprotected

Definition at line 95 of file polygons.cpp.

95 {
96 SkColor color = rand->nextU();
97 color |= 0xff000000;
98 paint->setColor(color);
99 if (40 == paint->getStrokeWidth()) {
100 paint->setAlpha(0xA0);
101 }
102 }
SkColor
uint32_t SkColor
Definition: SkColor.h:37
SkRandom::nextU
uint32_t nextU()
Definition: SkRandom.h:42
color
DlColor color
Definition: dl_golden_blur_unittests.cc:23

◆ SetLocation()

static void skiagm::PolygonsGM::SetLocation ( SkCanvas *  canvas,
int  counter,
int  lineNum 
)
inlinestaticprotected

Definition at line 89 of file polygons.cpp.

89 {
90 SkScalar x = SK_Scalar1 * kCellSize * (counter % lineNum) + 30 + SK_Scalar1 / 4;
91 SkScalar y = SK_Scalar1 * kCellSize * (counter / lineNum) + 30 + 3 * SK_Scalar1 / 4;
92 canvas->translate(x, y);
93 }
SK_Scalar1
#define SK_Scalar1
Definition: SkScalar.h:18
SkCanvas::translate
void translate(SkScalar dx, SkScalar dy)
Definition: SkCanvas.cpp:1278
y
double y
Definition: mouse-input-test.cc:83
x
double x
Definition: mouse-input-test.cc:82
The documentation for this class was generated from the following file:
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