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tilemodes_scaled.cpp File Reference
#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkImageInfo.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/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "include/utils/SkTextUtils.h"
#include "tools/ToolUtils.h"
#include "tools/fonts/FontToolUtils.h"

Go to the source code of this file.

Classes

class  ScaledTilingGM
 
class  ScaledTiling2GM
 

Typedefs

typedef sk_sp< SkShader >(* ShaderProc) (SkTileMode, SkTileMode)
 

Functions

static void makebm (SkBitmap *bm, SkColorType ct, int w, int h)
 
static void setup (SkPaint *paint, const SkBitmap &bm, const SkSamplingOptions &sampling, SkTileMode tmx, SkTileMode tmy)
 
static sk_sp< SkShader > make_bm (SkTileMode tx, SkTileMode ty)
 
static sk_sp< SkShader > make_grad (SkTileMode tx, SkTileMode ty)
 

Variables

const SkSamplingOptions gSamplings []
 
constexpr SkColorType gColorTypes []
 
constexpr int gWidth = 32
 
constexpr int gHeight = 32
 

Typedef Documentation

◆ ShaderProc

typedef sk_sp< SkShader >(* ShaderProc) (SkTileMode, SkTileMode)

Definition at line 194 of file tilemodes_scaled.cpp.

Function Documentation

◆ make_bm()

static sk_sp< SkShader > make_bm ( SkTileMode  tx,
SkTileMode  ty 
)
static

Definition at line 168 of file tilemodes_scaled.cpp.

168 {
169 SkBitmap bm;
170 makebm(&bm, kN32_SkColorType, gWidth, gHeight);
171 return bm.makeShader(tx, ty, SkSamplingOptions());
172}
SkBitmap::makeShader
sk_sp< SkShader > makeShader(SkTileMode tmx, SkTileMode tmy, const SkSamplingOptions &, const SkMatrix *localMatrix=nullptr) const
Definition: SkBitmap.cpp:669
skiagm::SkSamplingOptions
SkSamplingOptions(SkFilterMode::kLinear))
makebm
static void makebm(SkBitmap *bm, SkColorType ct, int w, int h)
Definition: tilemodes_scaled.cpp:38
gHeight
constexpr int gHeight
Definition: tilemodes_scaled.cpp:166
gWidth
constexpr int gWidth
Definition: tilemodes_scaled.cpp:165

◆ make_grad()

static sk_sp< SkShader > make_grad ( SkTileMode  tx,
SkTileMode  ty 
)
static

Definition at line 174 of file tilemodes_scaled.cpp.

174 {
175 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} };
176 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 };
177 SkScalar rad = SkIntToScalar(gWidth)/2;
178 SkColor colors[] = {0xFFFF0000, ToolUtils::color_to_565(0xFF0044FF)};
179
180 int index = (int)ty;
181 switch (index % 3) {
182 case 0:
183 return SkGradientShader::MakeLinear(pts, colors, nullptr, std::size(colors), tx);
184 case 1:
185 return SkGradientShader::MakeRadial(center, rad, colors, nullptr, std::size(colors), tx);
186 case 2:
187 return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr,
188 std::size(colors), tx, 135, 225, 0, nullptr);
189 }
190
191 return nullptr;
192}
SkColor
uint32_t SkColor
Definition: SkColor.h:37
SkIntToScalar
#define SkIntToScalar(x)
Definition: SkScalar.h:57
center
static SkScalar center(float pos0, float pos1)
Definition: TouchGesture.cpp:193
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
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
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
SkScalar
float SkScalar
Definition: extension.cpp:12
SkRecords::colors
PODArray< SkColor > colors
Definition: SkRecords.h:276
ToolUtils::color_to_565
SkColor color_to_565(SkColor color)
Definition: ToolUtils.cpp:139
flutter::size
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Definition: switches.h:259

◆ makebm()

static void makebm ( SkBitmap *  bm,
SkColorType  ct,
int  w,
int  h 
)
static

Definition at line 38 of file tilemodes_scaled.cpp.

38 {
39 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType));
40 bm->eraseColor(SK_ColorTRANSPARENT);
41
42 SkCanvas canvas(*bm);
43 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
44 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
45 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
46 SkPaint paint;
47
48 paint.setDither(true);
49 paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos,
50 std::size(colors), SkTileMode::kClamp));
51 canvas.drawPaint(paint);
52}
pos
SkPoint pos
Definition: ImageShaderTest.cpp:27
kPremul_SkAlphaType
@ kPremul_SkAlphaType
pixel components are premultiplied by alpha
Definition: SkAlphaType.h:29
SK_ColorTRANSPARENT
constexpr SkColor SK_ColorTRANSPARENT
Definition: SkColor.h:99
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
SK_Scalar1
#define SK_Scalar1
Definition: SkScalar.h:18
SkBitmap::allocPixels
void allocPixels(const SkImageInfo &info, size_t rowBytes)
Definition: SkBitmap.cpp:258
SkBitmap::eraseColor
void eraseColor(SkColor4f) const
Definition: SkBitmap.cpp:442
paint
const Paint & paint
Definition: color_source.cc:38
w
SkScalar w
Definition: pictureshadertile.cpp:30
h
SkScalar h
Definition: pictureshadertile.cpp:30
SkImageInfo::Make
static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at)
Definition: SkImageInfo.cpp:127

◆ setup()

static void setup ( SkPaint *  paint,
const SkBitmap &  bm,
const SkSamplingOptions &  sampling,
SkTileMode  tmx,
SkTileMode  tmy 
)
static

Definition at line 54 of file tilemodes_scaled.cpp.

55 {
56 paint->setShader(bm.makeShader(tmx, tmy, sampling));
57}
SkRecords::sampling
SkSamplingOptions sampling
Definition: SkRecords.h:337
tmy
SkTileMode tmy
Definition: pictureshader.cpp:31
tmx
SkTileMode tmx
Definition: pictureshader.cpp:30

Variable Documentation

◆ gColorTypes

constexpr SkColorType gColorTypes[]
constexpr
Initial value:
= {
kN32_SkColorType,
kRGB_565_SkColorType,
}
kRGB_565_SkColorType
@ kRGB_565_SkColorType
pixel with 5 bits red, 6 bits green, 5 bits blue, in 16-bit word
Definition: SkColorType.h:22

Definition at line 59 of file tilemodes_scaled.cpp.

◆ gHeight

constexpr int gHeight = 32
constexpr

Definition at line 166 of file tilemodes_scaled.cpp.

◆ gSamplings

const SkSamplingOptions gSamplings[]
Initial value:
= {
SkSamplingOptions(SkFilterMode::kNearest),
SkSamplingOptions(SkFilterMode::kLinear),
SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kLinear),
SkSamplingOptions(SkCubicResampler::Mitchell()),
SkSamplingOptions::Aniso(16),
}
SkCubicResampler::Mitchell
static constexpr SkCubicResampler Mitchell()
Definition: SkSamplingOptions.h:54
SkSamplingOptions::Aniso
static constexpr SkSamplingOptions Aniso(int maxAniso)
Definition: SkSamplingOptions.h:87

Definition at line 30 of file tilemodes_scaled.cpp.

◆ gWidth

constexpr int gWidth = 32
constexpr

Definition at line 165 of file tilemodes_scaled.cpp.

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