374772bd61
This reverts commit c245574ba3.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2396953002
TBR=
Review-Url: https://codereview.chromium.org/2396953002
719 lines
20 KiB
C++
719 lines
20 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "SkBlurMask.h"
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#include "SkBlurMaskFilter.h"
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#include "SkCanvas.h"
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#include "SkReadBuffer.h"
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#include "SkWriteBuffer.h"
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#include "SkGradientShader.h"
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#include "SkLayerRasterizer.h"
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#include "SkPaint.h"
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#include "SkView.h"
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#define BG_COLOR 0xFFDDDDDD
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typedef void (*SlideProc)(SkCanvas*);
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///////////////////////////////////////////////////////////////////////////////
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#include "Sk1DPathEffect.h"
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#include "Sk2DPathEffect.h"
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#include "SkCornerPathEffect.h"
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#include "SkDashPathEffect.h"
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#include "SkDiscretePathEffect.h"
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static void compose_pe(SkPaint* paint) {
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SkPathEffect* pe = paint->getPathEffect();
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sk_sp<SkPathEffect> corner = SkCornerPathEffect::Make(25);
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sk_sp<SkPathEffect> compose;
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if (pe) {
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compose = SkComposePathEffect::Make(sk_ref_sp(pe), corner);
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} else {
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compose = corner;
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}
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paint->setPathEffect(compose);
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}
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static void hair_pe(SkPaint* paint) {
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paint->setStrokeWidth(0);
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}
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static void hair2_pe(SkPaint* paint) {
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paint->setStrokeWidth(0);
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compose_pe(paint);
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}
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static void stroke_pe(SkPaint* paint) {
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paint->setStrokeWidth(12);
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compose_pe(paint);
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}
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static void dash_pe(SkPaint* paint) {
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SkScalar inter[] = { 20, 10, 10, 10 };
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paint->setStrokeWidth(12);
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paint->setPathEffect(SkDashPathEffect::Make(inter, SK_ARRAY_COUNT(inter), 0));
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compose_pe(paint);
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}
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static const int gXY[] = {
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4, 0, 0, -4, 8, -4, 12, 0, 8, 4, 0, 4
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};
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static void scale(SkPath* path, SkScalar scale) {
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SkMatrix m;
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m.setScale(scale, scale);
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path->transform(m);
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}
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static void one_d_pe(SkPaint* paint) {
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SkPath path;
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path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1]));
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for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2)
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path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1]));
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path.close();
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path.offset(SkIntToScalar(-6), 0);
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scale(&path, 1.5f);
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paint->setPathEffect(SkPath1DPathEffect::Make(path, SkIntToScalar(21), 0,
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SkPath1DPathEffect::kRotate_Style));
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compose_pe(paint);
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}
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typedef void (*PE_Proc)(SkPaint*);
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static const PE_Proc gPE[] = { hair_pe, hair2_pe, stroke_pe, dash_pe, one_d_pe };
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static void fill_pe(SkPaint* paint) {
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paint->setStyle(SkPaint::kFill_Style);
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paint->setPathEffect(nullptr);
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}
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static void discrete_pe(SkPaint* paint) {
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paint->setPathEffect(SkDiscretePathEffect::Make(10, 4));
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}
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static sk_sp<SkPathEffect> MakeTileEffect() {
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SkMatrix m;
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m.setScale(SkIntToScalar(12), SkIntToScalar(12));
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SkPath path;
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path.addCircle(0, 0, SkIntToScalar(5));
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return SkPath2DPathEffect::Make(m, path);
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}
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static void tile_pe(SkPaint* paint) {
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paint->setPathEffect(MakeTileEffect());
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}
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static const PE_Proc gPE2[] = { fill_pe, discrete_pe, tile_pe };
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static void patheffect_slide(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setStyle(SkPaint::kStroke_Style);
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SkPath path;
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path.moveTo(20, 20);
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path.lineTo(70, 120);
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path.lineTo(120, 30);
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path.lineTo(170, 80);
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path.lineTo(240, 50);
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size_t i;
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canvas->save();
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for (i = 0; i < SK_ARRAY_COUNT(gPE); i++) {
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gPE[i](&paint);
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canvas->drawPath(path, paint);
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canvas->translate(0, 75);
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}
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canvas->restore();
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path.reset();
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SkRect r = { 0, 0, 250, 120 };
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path.addOval(r, SkPath::kCW_Direction);
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r.inset(50, 50);
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path.addRect(r, SkPath::kCCW_Direction);
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canvas->translate(320, 20);
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for (i = 0; i < SK_ARRAY_COUNT(gPE2); i++) {
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gPE2[i](&paint);
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canvas->drawPath(path, paint);
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canvas->translate(0, 160);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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#include "SkGradientShader.h"
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struct GradData {
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int fCount;
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const SkColor* fColors;
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const SkScalar* fPos;
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};
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static const SkColor gColors[] = {
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SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK
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};
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static const SkScalar gPos0[] = { 0, SK_Scalar1 };
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static const SkScalar gPos1[] = { SK_Scalar1/4, SK_Scalar1*3/4 };
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static const SkScalar gPos2[] = {
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0, SK_Scalar1/8, SK_Scalar1/2, SK_Scalar1*7/8, SK_Scalar1
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};
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static const GradData gGradData[] = {
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{ 2, gColors, nullptr },
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{ 2, gColors, gPos0 },
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{ 2, gColors, gPos1 },
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{ 5, gColors, nullptr },
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{ 5, gColors, gPos2 }
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};
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static sk_sp<SkShader> MakeLinear(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
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return SkGradientShader::MakeLinear(pts, data.fColors, data.fPos, data.fCount, tm);
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}
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static sk_sp<SkShader> MakeRadial(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
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SkPoint center;
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center.set(SkScalarAve(pts[0].fX, pts[1].fX),
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SkScalarAve(pts[0].fY, pts[1].fY));
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return SkGradientShader::MakeRadial(center, center.fX, data.fColors,
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data.fPos, data.fCount, tm);
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}
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static sk_sp<SkShader> MakeSweep(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
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SkPoint center;
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center.set(SkScalarAve(pts[0].fX, pts[1].fX),
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SkScalarAve(pts[0].fY, pts[1].fY));
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return SkGradientShader::MakeSweep(center.fX, center.fY, data.fColors, data.fPos, data.fCount);
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}
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static sk_sp<SkShader> Make2Conical(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
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SkPoint center0, center1;
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center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
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SkScalarAve(pts[0].fY, pts[1].fY));
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center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
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SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
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return SkGradientShader::MakeTwoPointConical(center1, (pts[1].fX - pts[0].fX) / 7,
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center0, (pts[1].fX - pts[0].fX) / 2,
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data.fColors, data.fPos, data.fCount, tm);
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}
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typedef sk_sp<SkShader> (*GradMaker)(const SkPoint pts[2], const GradData&, SkShader::TileMode);
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static const GradMaker gGradMakers[] = {
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MakeLinear, MakeRadial, MakeSweep, Make2Conical
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};
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static void gradient_slide(SkCanvas* canvas) {
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SkPoint pts[2] = {
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{ 0, 0 },
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{ SkIntToScalar(100), SkIntToScalar(100) }
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};
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SkShader::TileMode tm = SkShader::kClamp_TileMode;
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SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) };
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setDither(true);
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canvas->translate(SkIntToScalar(20), SkIntToScalar(10));
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for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) {
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canvas->save();
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for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) {
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paint.setShader(gGradMakers[j](pts, gGradData[i], tm));
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canvas->drawRect(r, paint);
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canvas->translate(0, SkIntToScalar(120));
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}
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canvas->restore();
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canvas->translate(SkIntToScalar(120), 0);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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#include "SkPathMeasure.h"
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static SkScalar getpathlen(const SkPath& path) {
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SkPathMeasure meas(path, false);
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return meas.getLength();
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}
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static void textonpath_slide(SkCanvas* canvas) {
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const char* text = "Displacement";
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size_t len =strlen(text);
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SkPath path;
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path.moveTo(100, 300);
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path.quadTo(300, 100, 500, 300);
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path.offset(0, -100);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setTextSize(40);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawPath(path, paint);
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paint.setStyle(SkPaint::kFill_Style);
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SkScalar x = 50;
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paint.setColor(0xFF008800);
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canvas->drawTextOnPathHV(text, len, path,
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x, paint.getTextSize()*2/3, paint);
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paint.setColor(SK_ColorRED);
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canvas->drawTextOnPathHV(text, len, path,
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x + 60, 0, paint);
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paint.setColor(SK_ColorBLUE);
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canvas->drawTextOnPathHV(text, len, path,
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x + 120, -paint.getTextSize()*2/3, paint);
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path.offset(0, 200);
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paint.setTextAlign(SkPaint::kRight_Align);
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text = "Matrices";
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len = strlen(text);
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SkScalar pathLen = getpathlen(path);
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SkMatrix matrix;
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paint.setColor(SK_ColorBLACK);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawPath(path, paint);
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paint.setStyle(SkPaint::kFill_Style);
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paint.setTextSize(50);
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canvas->drawTextOnPath(text, len, path, nullptr, paint);
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paint.setColor(SK_ColorRED);
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matrix.setScale(-SK_Scalar1, SK_Scalar1);
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matrix.postTranslate(pathLen, 0);
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canvas->drawTextOnPath(text, len, path, &matrix, paint);
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paint.setColor(SK_ColorBLUE);
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matrix.setScale(SK_Scalar1, -SK_Scalar1);
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canvas->drawTextOnPath(text, len, path, &matrix, paint);
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paint.setColor(0xFF008800);
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matrix.setScale(-SK_Scalar1, -SK_Scalar1);
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matrix.postTranslate(pathLen, 0);
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canvas->drawTextOnPath(text, len, path, &matrix, paint);
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}
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///////////////////////////////////////////////////////////////////////////////
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#include "DecodeFile.h"
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#include "SkOSFile.h"
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#include "SkRandom.h"
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#include "SkStream.h"
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static sk_sp<SkShader> make_shader0(SkIPoint* size) {
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SkBitmap bm;
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decode_file("/skimages/logo.gif", &bm);
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size->set(bm.width(), bm.height());
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return SkShader::MakeBitmapShader(bm, SkShader::kClamp_TileMode,
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SkShader::kClamp_TileMode);
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}
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static sk_sp<SkShader> make_shader1(const SkIPoint& size) {
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SkPoint pts[] = { { 0, 0 },
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{ SkIntToScalar(size.fX), SkIntToScalar(size.fY) } };
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SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorRED };
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return SkGradientShader::MakeLinear(pts, colors, nullptr,
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SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode);
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}
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class Rec {
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public:
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SkCanvas::VertexMode fMode;
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int fCount;
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SkPoint* fVerts;
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SkPoint* fTexs;
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Rec() : fCount(0), fVerts(nullptr), fTexs(nullptr) {}
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~Rec() { delete[] fVerts; delete[] fTexs; }
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};
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static void make_tris(Rec* rec) {
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int n = 10;
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SkRandom rand;
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rec->fMode = SkCanvas::kTriangles_VertexMode;
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rec->fCount = n * 3;
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rec->fVerts = new SkPoint[rec->fCount];
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for (int i = 0; i < n; i++) {
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SkPoint* v = &rec->fVerts[i*3];
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for (int j = 0; j < 3; j++) {
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v[j].set(rand.nextUScalar1() * 250, rand.nextUScalar1() * 250);
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}
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}
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}
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static void make_fan(Rec* rec, int texWidth, int texHeight) {
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const SkScalar tx = SkIntToScalar(texWidth);
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const SkScalar ty = SkIntToScalar(texHeight);
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const int n = 24;
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rec->fMode = SkCanvas::kTriangleFan_VertexMode;
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rec->fCount = n + 2;
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rec->fVerts = new SkPoint[rec->fCount];
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rec->fTexs = new SkPoint[rec->fCount];
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SkPoint* v = rec->fVerts;
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SkPoint* t = rec->fTexs;
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v[0].set(0, 0);
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t[0].set(0, 0);
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for (int i = 0; i < n; i++) {
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SkScalar cos;
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SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos);
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v[i+1].set(cos, sin);
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t[i+1].set(i*tx/n, ty);
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}
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v[n+1] = v[1];
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t[n+1].set(tx, ty);
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SkMatrix m;
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m.setScale(SkIntToScalar(100), SkIntToScalar(100));
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m.postTranslate(SkIntToScalar(110), SkIntToScalar(110));
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m.mapPoints(v, rec->fCount);
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}
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static void make_strip(Rec* rec, int texWidth, int texHeight) {
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const SkScalar tx = SkIntToScalar(texWidth);
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const SkScalar ty = SkIntToScalar(texHeight);
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const int n = 24;
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rec->fMode = SkCanvas::kTriangleStrip_VertexMode;
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rec->fCount = 2 * (n + 1);
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rec->fVerts = new SkPoint[rec->fCount];
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rec->fTexs = new SkPoint[rec->fCount];
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SkPoint* v = rec->fVerts;
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SkPoint* t = rec->fTexs;
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for (int i = 0; i < n; i++) {
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SkScalar cos;
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SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos);
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v[i*2 + 0].set(cos/2, sin/2);
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v[i*2 + 1].set(cos, sin);
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t[i*2 + 0].set(tx * i / n, ty);
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t[i*2 + 1].set(tx * i / n, 0);
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}
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v[2*n + 0] = v[0];
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v[2*n + 1] = v[1];
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t[2*n + 0].set(tx, ty);
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t[2*n + 1].set(tx, 0);
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SkMatrix m;
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m.setScale(SkIntToScalar(100), SkIntToScalar(100));
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m.postTranslate(SkIntToScalar(110), SkIntToScalar(110));
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m.mapPoints(v, rec->fCount);
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}
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static void mesh_slide(SkCanvas* canvas) {
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Rec fRecs[3];
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SkIPoint size;
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auto fShader0 = make_shader0(&size);
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auto fShader1 = make_shader1(size);
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make_strip(&fRecs[0], size.fX, size.fY);
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make_fan(&fRecs[1], size.fX, size.fY);
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make_tris(&fRecs[2]);
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SkPaint paint;
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paint.setDither(true);
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paint.setFilterQuality(kLow_SkFilterQuality);
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for (size_t i = 0; i < SK_ARRAY_COUNT(fRecs); i++) {
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canvas->save();
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paint.setShader(nullptr);
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canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount,
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fRecs[i].fVerts, fRecs[i].fTexs,
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nullptr, nullptr, nullptr, 0, paint);
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canvas->translate(SkIntToScalar(210), 0);
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paint.setShader(fShader0);
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canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount,
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fRecs[i].fVerts, fRecs[i].fTexs,
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nullptr, nullptr, nullptr, 0, paint);
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canvas->translate(SkIntToScalar(210), 0);
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paint.setShader(fShader1);
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canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount,
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fRecs[i].fVerts, fRecs[i].fTexs,
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nullptr, nullptr, nullptr, 0, paint);
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canvas->restore();
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canvas->translate(0, SkIntToScalar(250));
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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static void r0(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
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{
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p.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
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SkBlurMask::ConvertRadiusToSigma(3)));
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rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setMaskFilter(nullptr);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rastBuilder->addLayer(p);
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p.setAlpha(0x11);
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p.setStyle(SkPaint::kFill_Style);
|
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p.setBlendMode(SkBlendMode::kSrc);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r1(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setAlpha(0x40);
|
|
p.setBlendMode(SkBlendMode::kSrc);
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setStrokeWidth(SK_Scalar1*2);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r2(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
p.setStyle(SkPaint::kStrokeAndFill_Style);
|
|
p.setStrokeWidth(SK_Scalar1*4);
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setStrokeWidth(SK_Scalar1*3/2);
|
|
p.setBlendMode(SkBlendMode::kClear);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r3(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setStrokeWidth(SK_Scalar1*3);
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setAlpha(0x20);
|
|
p.setStyle(SkPaint::kFill_Style);
|
|
p.setBlendMode(SkBlendMode::kSrc);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r4(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
p.setAlpha(0x60);
|
|
rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
|
|
|
|
p.setAlpha(0xFF);
|
|
p.setBlendMode(SkBlendMode::kClear);
|
|
rastBuilder->addLayer(p, SK_Scalar1*3/2, SK_Scalar1*3/2);
|
|
|
|
p.setBlendMode(SkBlendMode::kSrcOver);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
#include "SkDiscretePathEffect.h"
|
|
|
|
static void r5(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setPathEffect(SkDiscretePathEffect::Make(SK_Scalar1*4, SK_Scalar1*3));
|
|
p.setBlendMode(SkBlendMode::kSrcOut);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r6(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setAntiAlias(false);
|
|
SkLayerRasterizer::Builder rastBuilder2;
|
|
r5(&rastBuilder2, p);
|
|
p.setRasterizer(rastBuilder2.detach());
|
|
p.setBlendMode(SkBlendMode::kClear);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
#include "Sk2DPathEffect.h"
|
|
|
|
static sk_sp<SkPathEffect> MakeDotEffect(SkScalar radius, const SkMatrix& matrix) {
|
|
SkPath path;
|
|
path.addCircle(0, 0, radius);
|
|
return SkPath2DPathEffect::Make(matrix, path);
|
|
}
|
|
|
|
static void r7(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
SkMatrix lattice;
|
|
lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
|
|
lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
|
|
p.setPathEffect(MakeDotEffect(SK_Scalar1*4, lattice));
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r8(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
rastBuilder->addLayer(p);
|
|
|
|
SkMatrix lattice;
|
|
lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
|
|
lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
|
|
p.setPathEffect(MakeDotEffect(SK_Scalar1*2, lattice));
|
|
p.setBlendMode(SkBlendMode::kClear);
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setPathEffect(nullptr);
|
|
p.setBlendMode(SkBlendMode::kSrcOver);
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setStrokeWidth(SK_Scalar1);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
static void r9(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
|
|
{
|
|
rastBuilder->addLayer(p);
|
|
|
|
SkMatrix lattice;
|
|
lattice.setScale(SK_Scalar1, SK_Scalar1*6, 0, 0);
|
|
lattice.postRotate(SkIntToScalar(30), 0, 0);
|
|
p.setPathEffect(SkLine2DPathEffect::Make(SK_Scalar1*2, lattice));
|
|
p.setBlendMode(SkBlendMode::kClear);
|
|
rastBuilder->addLayer(p);
|
|
|
|
p.setPathEffect(nullptr);
|
|
p.setBlendMode(SkBlendMode::kSrcOver);
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setStrokeWidth(SK_Scalar1);
|
|
rastBuilder->addLayer(p);
|
|
}
|
|
|
|
typedef void (*raster_proc)(SkLayerRasterizer::Builder*, SkPaint&);
|
|
|
|
static const raster_proc gRastProcs[] = {
|
|
r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
|
|
};
|
|
|
|
static void apply_shader(SkPaint* paint, int index) {
|
|
raster_proc proc = gRastProcs[index];
|
|
SkPaint p;
|
|
SkLayerRasterizer::Builder rastBuilder;
|
|
|
|
p.setAntiAlias(true);
|
|
proc(&rastBuilder, p);
|
|
paint->setRasterizer(rastBuilder.detach());
|
|
paint->setColor(SK_ColorBLUE);
|
|
}
|
|
|
|
#include "SkTypeface.h"
|
|
|
|
static void texteffect_slide(SkCanvas* canvas) {
|
|
const char* str = "Google";
|
|
size_t len = strlen(str);
|
|
SkScalar x = 20;
|
|
SkScalar y = 80;
|
|
SkPaint paint;
|
|
paint.setTypeface(SkTypeface::MakeFromName("Georgia",
|
|
SkFontStyle::FromOldStyle(SkTypeface::kItalic)));
|
|
paint.setTextSize(75);
|
|
paint.setAntiAlias(true);
|
|
paint.setColor(SK_ColorBLUE);
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(gRastProcs); i++) {
|
|
apply_shader(&paint, (int)i);
|
|
canvas->drawText(str, len, x, y, paint);
|
|
y += 80;
|
|
if (i == 4) {
|
|
x += 320;
|
|
y = 80;
|
|
}
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "SkImageEncoder.h"
|
|
|
|
static const SlideProc gProc[] = {
|
|
patheffect_slide,
|
|
gradient_slide,
|
|
textonpath_slide,
|
|
mesh_slide,
|
|
texteffect_slide
|
|
};
|
|
|
|
class SlideView : public SampleView {
|
|
int fIndex;
|
|
bool fOnce;
|
|
public:
|
|
SlideView() {
|
|
fOnce = false;
|
|
}
|
|
|
|
void init() {
|
|
if (fOnce) {
|
|
return;
|
|
}
|
|
fOnce = true;
|
|
|
|
fIndex = 0;
|
|
|
|
SkBitmap bm;
|
|
bm.allocN32Pixels(1024, 768);
|
|
SkCanvas canvas(bm);
|
|
SkScalar s = SkIntToScalar(1024) / 640;
|
|
canvas.scale(s, s);
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(gProc); i++) {
|
|
canvas.save();
|
|
canvas.drawColor(BG_COLOR);
|
|
gProc[i](&canvas);
|
|
canvas.restore();
|
|
SkString str;
|
|
str.printf("/skimages/slide_" SK_SIZE_T_SPECIFIER ".png", i);
|
|
SkImageEncoder::EncodeFile(str.c_str(), bm, SkImageEncoder::kPNG_Type, 100);
|
|
}
|
|
this->setBGColor(BG_COLOR);
|
|
}
|
|
|
|
protected:
|
|
// overrides from SkEventSink
|
|
bool onQuery(SkEvent* evt) override {
|
|
if (SampleCode::TitleQ(*evt)) {
|
|
SampleCode::TitleR(evt, "Slides");
|
|
return true;
|
|
}
|
|
return this->INHERITED::onQuery(evt);
|
|
}
|
|
|
|
void onDrawContent(SkCanvas* canvas) override {
|
|
this->init();
|
|
gProc[fIndex](canvas);
|
|
}
|
|
|
|
SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override {
|
|
this->init();
|
|
fIndex = (fIndex + 1) % SK_ARRAY_COUNT(gProc);
|
|
this->inval(nullptr);
|
|
return nullptr;
|
|
}
|
|
|
|
private:
|
|
typedef SampleView INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
static SkView* MyFactory() { return new SlideView; }
|
|
static SkViewRegister reg(MyFactory);
|