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gradients_no_texture.cpp File Reference
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include <string.h>

Go to the source code of this file.

Classes

struct  GradData
 
class  GradientsNoTextureGM
 
struct  ColorPos
 
class  GradientsManyColorsGM
 

Typedefs

typedef sk_sp< SkShader >(* GradMaker) (const SkPoint pts[2], const GradData &data, SkTileMode tm)
 

Functions

static sk_sp< SkShader > MakeLinear (const SkPoint pts[2], const GradData &data, SkTileMode tm)
 
static sk_sp< SkShader > MakeRadial (const SkPoint pts[2], const GradData &data, SkTileMode tm)
 
static sk_sp< SkShader > MakeSweep (const SkPoint pts[2], const GradData &data, SkTileMode)
 
static sk_sp< SkShader > Make2Radial (const SkPoint pts[2], const GradData &data, SkTileMode tm)
 
static sk_sp< SkShader > Make2Conical (const SkPoint pts[2], const GradData &data, SkTileMode tm)
 
static void make0 (ColorPos *rec)
 
static void make1 (ColorPos *rec)
 
static void make2 (ColorPos *rec)
 
static void make3 (ColorPos *rec)
 

Variables

constexpr SkColor gColors []
 
constexpr GradData gGradData []
 
constexpr GradMaker gGradMakers []
 

Typedef Documentation

◆ GradMaker

typedef sk_sp< SkShader >(* GradMaker) (const SkPoint pts[2], const GradData &data, SkTileMode tm)

Definition at line 87 of file gradients_no_texture.cpp.

Function Documentation

◆ make0()

static void make0 ( ColorPos *  rec)
static

Definition at line 166 of file gradients_no_texture.cpp.

166 {
167#if 0
168 From http://jsfiddle.net/3fe2a/
169
170background-image: -webkit-linear-gradient(left, #22d1cd 1%, #22d1cd 0.9510157507590116%, #df4b37 2.9510157507590113%, #df4b37 23.695886056604927%, #22d1cd 25.695886056604927%, #22d1cd 25.39321881940624%, #e6de36 27.39321881940624%, #e6de36 31.849399922570655%, #3267ff 33.849399922570655%, #3267ff 44.57735802921938%, #9d47d1 46.57735802921938%, #9d47d1 53.27185850805876%, #3267ff 55.27185850805876%, #3267ff 61.95718972227316%, #5cdd9d 63.95718972227316%, #5cdd9d 69.89166004442%, #3267ff 71.89166004442%, #3267ff 74.45795382765857%, #9d47d1 76.45795382765857%, #9d47d1 82.78364610713776%, #3267ff 84.78364610713776%, #3267ff 94.52743647737229%, #e3d082 96.52743647737229%, #e3d082 96.03934633331295%);
171height: 30px;
172#endif
173
174 const SkColor colors[] = {
175 0xFF22d1cd, 0xFF22d1cd, 0xFFdf4b37, 0xFFdf4b37, 0xFF22d1cd, 0xFF22d1cd, 0xFFe6de36, 0xFFe6de36,
176 0xFF3267ff, 0xFF3267ff, 0xFF9d47d1, 0xFF9d47d1, 0xFF3267ff, 0xFF3267ff, 0xFF5cdd9d, 0xFF5cdd9d,
177 0xFF3267ff, 0xFF3267ff, 0xFF9d47d1, 0xFF9d47d1, 0xFF3267ff, 0xFF3267ff, 0xFFe3d082, 0xFFe3d082
178 };
179 const double percent[] = {
180 1, 0.9510157507590116, 2.9510157507590113, 23.695886056604927,
181 25.695886056604927, 25.39321881940624, 27.39321881940624, 31.849399922570655,
182 33.849399922570655, 44.57735802921938, 46.57735802921938, 53.27185850805876,
183 55.27185850805876, 61.95718972227316, 63.95718972227316, 69.89166004442,
184 71.89166004442, 74.45795382765857, 76.45795382765857, 82.78364610713776,
185 84.78364610713776, 94.52743647737229, 96.52743647737229, 96.03934633331295,
186 };
187 const int N = std::size(percent);
188 SkScalar pos[N];
189 for (int i = 0; i < N; ++i) {
190 pos[i] = SkDoubleToScalar(percent[i] / 100);
191 }
192 rec->construct(colors, pos, N);
193}
pos
SkPoint pos
Definition: ImageShaderTest.cpp:27
SkColor
uint32_t SkColor
Definition: SkColor.h:37
left
static bool left(const SkPoint &p0, const SkPoint &p1)
Definition: SkPolyUtils.cpp:527
SkDoubleToScalar
#define SkDoubleToScalar(x)
Definition: SkScalar.h:64
N
#define N
Definition: beziers.cpp:19
SkScalar
float SkScalar
Definition: extension.cpp:12
i
int i
Definition: fl_socket_accessible.cc:18
SkRecords::image
sk_sp< const SkImage > image
Definition: SkRecords.h:269
SkRecords::colors
PODArray< SkColor > colors
Definition: SkRecords.h:276
flutter::size
it will be possible to load the file into Perfetto s trace viewer disable asset Prevents usage of any non test fonts unless they were explicitly Loaded via prefetched default font Indicates whether the embedding started a prefetch of the default font manager before creating the engine run In non interactive keep the shell running after the Dart script has completed enable serial On low power devices with low core running concurrent GC tasks on threads can cause them to contend with the UI thread which could potentially lead to jank This option turns off all concurrent GC activities domain network JSON encoded network policy per domain This overrides the DisallowInsecureConnections switch Embedder can specify whether to allow or disallow insecure connections at a domain level old gen heap size
Definition: switches.h:259
height
int32_t height
Definition: serialization_callbacks.cc:1
ColorPos::construct
void construct(const SkColor colors[], const SkScalar pos[], int count)
Definition: gradients_no_texture.cpp:153
linear
static sk_sp< SkShader > linear(sk_sp< SkShader > shader)
Definition: workingspace.cpp:90

◆ make1()

static void make1 ( ColorPos *  rec)
static

Definition at line 195 of file gradients_no_texture.cpp.

195 {
196 const SkColor colors[] = {
197 SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLACK, SK_ColorWHITE,
198 SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLACK, SK_ColorWHITE,
199 SK_ColorBLACK,
200 };
201 rec->construct(colors, nullptr, std::size(colors));
202}
SK_ColorBLACK
constexpr SkColor SK_ColorBLACK
Definition: SkColor.h:103
SK_ColorWHITE
constexpr SkColor SK_ColorWHITE
Definition: SkColor.h:122

◆ make2()

static void make2 ( ColorPos *  rec)
static

Definition at line 204 of file gradients_no_texture.cpp.

204 {
205 const SkColor colors[] = {
206 SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLACK, SK_ColorWHITE,
207 SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLACK, SK_ColorWHITE,
208 SK_ColorBLACK,
209 };
210 const int N = std::size(colors);
211 SkScalar pos[N];
212 for (int i = 0; i < N; ++i) {
213 pos[i] = SK_Scalar1 * i / (N - 1);
214 }
215 rec->construct(colors, pos, N);
216}
SK_Scalar1
#define SK_Scalar1
Definition: SkScalar.h:18

◆ Make2Conical()

static sk_sp< SkShader > Make2Conical ( const SkPoint  pts[2],
const GradData &  data,
SkTileMode  tm 
)
static

Definition at line 74 of file gradients_no_texture.cpp.

74 {
75 SkPoint center0, center1;
76 SkScalar radius0 = (pts[1].fX - pts[0].fX) / 10;
77 SkScalar radius1 = (pts[1].fX - pts[0].fX) / 3;
78 center0.set(pts[0].fX + radius0, pts[0].fY + radius0);
79 center1.set(pts[1].fX - radius1, pts[1].fY - radius1);
80 return SkGradientShader::MakeTwoPointConical(center1, radius1,
81 center0, radius0,
82 data.fColors, data.fPos,
83 data.fCount, tm);
84}
SkGradientShader::MakeTwoPointConical
static sk_sp< SkShader > MakeTwoPointConical(const SkPoint &start, SkScalar startRadius, const SkPoint &end, SkScalar endRadius, const SkColor colors[], const SkScalar pos[], int count, SkTileMode mode, uint32_t flags=0, const SkMatrix *localMatrix=nullptr)
Definition: SkConicalGradient.cpp:344
SkPoint::fX
float fX
x-axis value
Definition: SkPoint_impl.h:164
SkPoint::set
void set(float x, float y)
Definition: SkPoint_impl.h:200
data
std::shared_ptr< const fml::Mapping > data
Definition: texture_gles.cc:63

◆ Make2Radial()

static sk_sp< SkShader > Make2Radial ( const SkPoint  pts[2],
const GradData &  data,
SkTileMode  tm 
)
static

Definition at line 62 of file gradients_no_texture.cpp.

62 {
63 SkPoint center0, center1;
64 center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
65 SkScalarAve(pts[0].fY, pts[1].fY));
66 center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
67 SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
68 return SkGradientShader::MakeTwoPointConical(
69 center1, (pts[1].fX - pts[0].fX) / 7,
70 center0, (pts[1].fX - pts[0].fX) / 2,
71 data.fColors, data.fPos, data.fCount, tm);
72}
SkScalarAve
#define SkScalarAve(a, b)
Definition: SkScalar.h:74
SkIntToScalar
#define SkIntToScalar(x)
Definition: SkScalar.h:57
SkScalarInterp
static SkScalar SkScalarInterp(SkScalar A, SkScalar B, SkScalar t)
Definition: SkScalar.h:131

◆ make3()

static void make3 ( ColorPos *  rec)
static

Definition at line 218 of file gradients_no_texture.cpp.

218 {
219 const SkColor colors[] = {
220 SK_ColorRED, SK_ColorBLUE, SK_ColorBLUE, SK_ColorGREEN, SK_ColorGREEN, SK_ColorBLACK,
221 };
222 const SkScalar pos[] = {
223 0, 0, 0.5f, 0.5, 1, 1,
224 };
225 rec->construct(colors, pos, std::size(colors));
226}
SK_ColorBLUE
constexpr SkColor SK_ColorBLUE
Definition: SkColor.h:135
SK_ColorRED
constexpr SkColor SK_ColorRED
Definition: SkColor.h:126
SK_ColorGREEN
constexpr SkColor SK_ColorGREEN
Definition: SkColor.h:131

◆ MakeLinear()

static sk_sp< SkShader > MakeLinear ( const SkPoint  pts[2],
const GradData &  data,
SkTileMode  tm 
)
static

Definition at line 44 of file gradients_no_texture.cpp.

44 {
45 return SkGradientShader::MakeLinear(pts, data.fColors, data.fPos, data.fCount, tm);
46}
SkGradientShader::MakeLinear
static sk_sp< SkShader > MakeLinear(const SkPoint pts[2], const SkColor colors[], const SkScalar pos[], int count, SkTileMode mode, uint32_t flags=0, const SkMatrix *localMatrix=nullptr)
Definition: SkLinearGradient.cpp:132

◆ MakeRadial()

static sk_sp< SkShader > MakeRadial ( const SkPoint  pts[2],
const GradData &  data,
SkTileMode  tm 
)
static

Definition at line 48 of file gradients_no_texture.cpp.

48 {
49 SkPoint center;
50 center.set(SkScalarAve(pts[0].fX, pts[1].fX),
51 SkScalarAve(pts[0].fY, pts[1].fY));
52 return SkGradientShader::MakeRadial(center, center.fX, data.fColors, data.fPos, data.fCount, tm);
53}
center
static SkScalar center(float pos0, float pos1)
Definition: TouchGesture.cpp:193
SkGradientShader::MakeRadial
static sk_sp< SkShader > MakeRadial(const SkPoint &center, SkScalar radius, const SkColor colors[], const SkScalar pos[], int count, SkTileMode mode, uint32_t flags=0, const SkMatrix *localMatrix=nullptr)
Definition: SkRadialGradient.cpp:123

◆ MakeSweep()

static sk_sp< SkShader > MakeSweep ( const SkPoint  pts[2],
const GradData &  data,
SkTileMode   
)
static

Definition at line 55 of file gradients_no_texture.cpp.

55 {
56 SkPoint center;
57 center.set(SkScalarAve(pts[0].fX, pts[1].fX),
58 SkScalarAve(pts[0].fY, pts[1].fY));
59 return SkGradientShader::MakeSweep(center.fX, center.fY, data.fColors, data.fPos, data.fCount);
60}
SkGradientShader::MakeSweep
static sk_sp< SkShader > MakeSweep(SkScalar cx, SkScalar cy, const SkColor colors[], const SkScalar pos[], int count, SkTileMode mode, SkScalar startAngle, SkScalar endAngle, uint32_t flags, const SkMatrix *localMatrix)
Definition: SkSweepGradient.cpp:155

Variable Documentation

◆ gColors

constexpr SkColor gColors[]
constexpr
Initial value:
= {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE,
}

Definition at line 33 of file gradients_no_texture.cpp.

◆ gGradData

constexpr GradData gGradData[]
constexpr
Initial value:
= {
{ 1, gColors, nullptr },
{ 2, gColors, nullptr },
{ 3, gColors, nullptr },
{ 4, gColors, nullptr },
}
gColors
constexpr SkColor gColors[]
Definition: gradients_no_texture.cpp:33

Definition at line 37 of file gradients_no_texture.cpp.

◆ gGradMakers

constexpr GradMaker gGradMakers[]
constexpr
Initial value:
= {
MakeLinear, MakeRadial, MakeSweep, Make2Radial, Make2Conical,
}
MakeLinear
static sk_sp< SkShader > MakeLinear(const SkPoint pts[2], const GradData &data, SkTileMode tm)
Definition: gradients_no_texture.cpp:44
MakeRadial
static sk_sp< SkShader > MakeRadial(const SkPoint pts[2], const GradData &data, SkTileMode tm)
Definition: gradients_no_texture.cpp:48
Make2Conical
static sk_sp< SkShader > Make2Conical(const SkPoint pts[2], const GradData &data, SkTileMode tm)
Definition: gradients_no_texture.cpp:74
Make2Radial
static sk_sp< SkShader > Make2Radial(const SkPoint pts[2], const GradData &data, SkTileMode tm)
Definition: gradients_no_texture.cpp:62
MakeSweep
static sk_sp< SkShader > MakeSweep(const SkPoint pts[2], const GradData &data, SkTileMode)
Definition: gradients_no_texture.cpp:55

Definition at line 89 of file gradients_no_texture.cpp.

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