Revert of Remove unused (by clients) SkUnitMapper (https://codereview.chromium.org/283273002/)

samplecode/SampleGradients.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
 
 static SkShader* setgrad(const SkRect& r, SkColor c0, SkColor c1) {
     SkColor colors[] = { c0, c1 };
     SkPoint pts[] = { { r.fLeft, r.fTop }, { r.fRight, r.fTop } };
-    return SkGradientShader::CreateLinear(pts, colors, NULL, 2, SkShader::kClamp_TileMode);
+    return SkGradientShader::CreateLinear(pts, colors, NULL, 2,
+                                          SkShader::kClamp_TileMode, NULL);
 }
 
 static void test_alphagradients(SkCanvas* canvas) {
     SkRect r;
     r.set(SkIntToScalar(10), SkIntToScalar(10),
           SkIntToScalar(410), SkIntToScalar(30));
     SkPaint p, p2;
     p2.setStyle(SkPaint::kStroke_Style);
 
     p.setShader(setgrad(r, 0xFF00FF00, 0x0000FF00))->unref();
@@ skipping 29 matching lines @@
 };
 
 static const GradData gGradData[] = {
     { 2, gColors, NULL },
     { 2, gColors, gPos0 },
     { 2, gColors, gPos1 },
     { 5, gColors, NULL },
     { 5, gColors, gPos2 }
 };
 
-static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
-    return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos, data.fCount, tm);
+static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data,
+                            SkShader::TileMode tm, SkUnitMapper* mapper) {
+    return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos,
+                                          data.fCount, tm, mapper);
 }
 
-static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
+static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data,
+                            SkShader::TileMode tm, SkUnitMapper* mapper) {
     SkPoint center;
     center.set(SkScalarAve(pts[0].fX, pts[1].fX),
                SkScalarAve(pts[0].fY, pts[1].fY));
     return SkGradientShader::CreateRadial(center, center.fX, data.fColors,
-                                          data.fPos, data.fCount, tm);
+                                          data.fPos, data.fCount, tm, mapper);
 }
 
-static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
+static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data,
+                           SkShader::TileMode tm, SkUnitMapper* mapper) {
     SkPoint center;
     center.set(SkScalarAve(pts[0].fX, pts[1].fX),
                SkScalarAve(pts[0].fY, pts[1].fY));
-    return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors, data.fPos, data.fCount);
+    return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors,
+                                         data.fPos, data.fCount, mapper);
 }
 
-static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm) {
+static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data,
+                           SkShader::TileMode tm, SkUnitMapper* mapper) {
     SkPoint center0, center1;
     center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
                 SkScalarAve(pts[0].fY, pts[1].fY));
     center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
                 SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
     return SkGradientShader::CreateTwoPointRadial(
                             center1, (pts[1].fX - pts[0].fX) / 7,
                             center0, (pts[1].fX - pts[0].fX) / 2,
-                            data.fColors, data.fPos, data.fCount, tm);
+                            data.fColors, data.fPos, data.fCount, tm, mapper);
 }
 
 static SkShader* Make2RadialConcentric(const SkPoint pts[2], const GradData& data,
-                                       SkShader::TileMode tm) {
+                                       SkShader::TileMode tm, SkUnitMapper* mapper) {
     SkPoint center;
     center.set(SkScalarAve(pts[0].fX, pts[1].fX),
                SkScalarAve(pts[0].fY, pts[1].fY));
     return SkGradientShader::CreateTwoPointRadial(
                             center, (pts[1].fX - pts[0].fX) / 7,
                             center, (pts[1].fX - pts[0].fX) / 2,
-                            data.fColors, data.fPos, data.fCount, tm);
+                            data.fColors, data.fPos, data.fCount, tm, mapper);
 }
 
-typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data, SkShader::TileMode tm);
-
+typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data,
+                     SkShader::TileMode tm, SkUnitMapper* mapper);
 static const GradMaker gGradMakers[] = {
     MakeLinear, MakeRadial, MakeSweep, Make2Radial, Make2RadialConcentric
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class GradientsView : public SampleView {
 public:
     GradientsView() {
         this->setBGColor(0xFFDDDDDD);
@@ skipping 20 matching lines @@
 
         canvas->save();
         canvas->translate(SkIntToScalar(20), SkIntToScalar(10));
 
         for (int tm = 0; tm < SkShader::kTileModeCount; ++tm) {
             canvas->save();
             for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) {
                 canvas->save();
                 for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) {
                     SkShader* shader;
-                    shader = gGradMakers[j](pts, gGradData[i], (SkShader::TileMode)tm);
+                    shader = gGradMakers[j](pts, gGradData[i], (SkShader::TileMode)tm, NULL);
                     paint.setShader(shader)->unref();
                     canvas->drawRect(r, paint);
                     canvas->translate(0, SkIntToScalar(120));
                 }
                 canvas->restore();
                 canvas->translate(SkIntToScalar(120), 0);
             }
             canvas->restore();
             canvas->translate(SK_ARRAY_COUNT(gGradData)*SkIntToScalar(120), 0);
         }
         canvas->restore();
 
         canvas->translate(0, SkIntToScalar(370));
         if (false) { // avoid bit rot, suppress warning
             test_alphagradients(canvas);
         }
         this->inval(NULL);
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new GradientsView; }
 static SkViewRegister reg(MyFactory);