Convert unit tests, GMs from SkBitmapSource to SkImagesource

gm/imagefilterscropexpand.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkColorFilter.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"
 
-#include "SkBitmapSource.h"
 #include "SkBlurImageFilter.h"
 #include "SkColorMatrixFilter.h"
 #include "SkDisplacementMapEffect.h"
 #include "SkDropShadowImageFilter.h"
 #include "SkGradientShader.h"
+#include "SkImageSource.h"
 #include "SkMorphologyImageFilter.h"
 #include "SkColorFilterImageFilter.h"
 #include "SkMergeImageFilter.h"
 #include "SkOffsetImageFilter.h"
+#include "SkSurface.h"
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class ImageFiltersCropExpandGM : public skiagm::GM {
 public:
     ImageFiltersCropExpandGM () {}
 
 protected:
 
-    virtual SkString onShortName() {
+    SkString onShortName() override {
         return SkString("imagefilterscropexpand");
     }
 
-    virtual SkISize onISize() { return SkISize::Make(570, 650); }
+    SkISize onISize() override { return SkISize::Make(570, 650); }
 
-    void make_checkerboard(SkBitmap* bitmap) {
+    void onDraw(SkCanvas* canvas) override {
+        SkAutoTUnref<SkColorFilter> cf(
+            SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode));
+        SkImageFilter::CropRect cropRect(
+            SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
+            SkImageFilter::CropRect::kHasAll_CropEdge);
+
+        SkAutoTUnref<SkImage> gradientCircle(MakeGradientCircle(64, 64));
+        SkBitmap checkerboard;
+        MakeCheckerboard(&checkerboard);
+
+        SkAutoTUnref<SkImageFilter> gradientCircleSource(
+            SkImageSource::Create(gradientCircle));
+        SkAutoTUnref<SkImageFilter> noopCropped(
+            SkOffsetImageFilter::Create(0, 0, nullptr, &cropRect));
+        SkScalar sk255 = SkIntToScalar(255);
+        SkScalar matrix[20] = { 1, 0, 0, 0, 0,
+                                0, 1, 0, 0, sk255,
+                                0, 0, 1, 0, 0,
+                                0, 0, 0, 0, sk255 };
+        SkAutoTUnref<SkColorFilter> cfAlphaTrans(SkColorMatrixFilter::Create(matrix));
+
+        SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
+        SkScalar MARGIN = SkIntToScalar(12);
+
+        SkIRect bounds;
+        r.roundOut(&bounds);
+
+        SkPaint paint;
+        canvas->translate(MARGIN, MARGIN);
+        for (int outset = -15; outset <= 20; outset += 5) {
+            canvas->save();
+            SkRect rect = cropRect.rect();
+            rect.outset(SkIntToScalar(outset),
+                        SkIntToScalar(outset));
+            SkImageFilter::CropRect big_rect(rect, SkImageFilter::CropRect::kHasAll_CropEdge);
+
+            Draw(canvas, checkerboard, rect, SkColorFilterImageFilter::Create(
+                cfAlphaTrans, noopCropped.get(), &big_rect));
+
+            Draw(canvas, checkerboard, rect, SkBlurImageFilter::Create(
+                8.0f, 8.0f, noopCropped.get(), &big_rect));
+
+            Draw(canvas, checkerboard, rect, SkDilateImageFilter::Create(
+                2, 2, noopCropped.get(), &big_rect));
+
+            Draw(canvas, checkerboard, rect, SkErodeImageFilter::Create(
+                2, 2, noopCropped.get(), &big_rect));
+
+            Draw(canvas, checkerboard, rect, SkDropShadowImageFilter::Create(
+                SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(3), SkIntToScalar(3),
+                SK_ColorBLUE, SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
+                noopCropped.get(), &big_rect));
+
+            Draw(canvas, checkerboard, rect, SkDisplacementMapEffect::Create(
+                SkDisplacementMapEffect::kR_ChannelSelectorType,
+                SkDisplacementMapEffect::kR_ChannelSelectorType,
+                SkIntToScalar(12),
+                gradientCircleSource.get(),
+                noopCropped.get(),
+                &big_rect));
+
+            Draw(canvas, checkerboard, rect, SkOffsetImageFilter::Create(
+                SkIntToScalar(-8), SkIntToScalar(16), noopCropped.get(), &big_rect));
+
+            canvas->restore();
+            canvas->translate(0, SkIntToScalar(80));
+        }
+    }
+
+private:
+    static void MakeCheckerboard(SkBitmap* bitmap) {
         bitmap->allocN32Pixels(64, 64);
         SkCanvas canvas(*bitmap);
         canvas.clear(0xFFFF0000);
         SkPaint darkPaint;
         darkPaint.setColor(sk_tool_utils::color_to_565(0xFF404040));
         SkPaint lightPaint;
         lightPaint.setColor(sk_tool_utils::color_to_565(0xFFA0A0A0));
         for (int y = 8; y < 48; y += 16) {
             for (int x = 8; x < 48; x += 16) {
                 canvas.save();
                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
                 canvas.restore();
             }
         }
     }
 
-    void make_gradient_circle(int width, int height, SkBitmap* bitmap) {
+    static SkImage* MakeGradientCircle(int width, int height) {
         SkScalar x = SkIntToScalar(width / 2);
         SkScalar y = SkIntToScalar(height / 2);
         SkScalar radius = SkMinScalar(x, y) * 0.8f;
-        bitmap->allocN32Pixels(width, height);
-        SkCanvas canvas(*bitmap);
-        canvas.clear(0x00000000);
+        SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(width, height));
+        SkCanvas* canvas = surface->getCanvas();
+        canvas->clear(0x00000000);
         SkColor colors[2];
         colors[0] = SK_ColorWHITE;
         colors[1] = SK_ColorBLACK;
         SkAutoTUnref<SkShader> shader(
             SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2,
                                            SkShader::kClamp_TileMode)
         );
         SkPaint paint;
         paint.setShader(shader);
-        canvas.drawCircle(x, y, radius, paint);
+        canvas->drawCircle(x, y, radius, paint);
+
+        return surface->newImageSnapshot();
     }
 
-    static void draw(SkCanvas* canvas, const SkBitmap& bitmap, const SkRect& rect, SkImageFilter* filter) {
+    static void Draw(SkCanvas* canvas, const SkBitmap& bitmap, const SkRect& rect, SkImageFilter* filter) {
         SkPaint paint;
         paint.setImageFilter(filter)->unref();
         canvas->saveLayer(&rect, &paint);
         canvas->drawBitmap(bitmap, 0, 0);
         canvas->restore();
 
         SkPaint strokePaint;
         strokePaint.setColor(0xFFFF0000);
         strokePaint.setStyle(SkPaint::kStroke_Style);
         canvas->drawRect(rect, strokePaint);
 
         canvas->translate(SkIntToScalar(80), 0);
     }
 
-    virtual void onDraw(SkCanvas* canvas) {
-        SkAutoTUnref<SkColorFilter> cf(
-            SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode));
-        SkImageFilter::CropRect crop_rect(
-            SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
-            SkImageFilter::CropRect::kHasAll_CropEdge);
-
-        SkBitmap gradient_circle, checkerboard;
-        make_gradient_circle(64, 64, &gradient_circle);
-        make_checkerboard(&checkerboard);
-
-        SkAutoTUnref<SkImageFilter> gradient_circle_source(
-            SkBitmapSource::Create(gradient_circle));
-        SkAutoTUnref<SkImageFilter> noop_cropped(
-            SkOffsetImageFilter::Create(0, 0, nullptr, &crop_rect));
-        SkScalar sk255 = SkIntToScalar(255);
-        SkScalar matrix[20] = { 1, 0, 0, 0, 0,
-                                0, 1, 0, 0, sk255,
-                                0, 0, 1, 0, 0,
-                                0, 0, 0, 0, sk255 };
-        SkAutoTUnref<SkColorFilter> cf_alpha_trans(SkColorMatrixFilter::Create(matrix));
-
-        SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
-        SkScalar MARGIN = SkIntToScalar(12);
-
-        SkIRect bounds;
-        r.roundOut(&bounds);
-
-        SkPaint paint;
-        canvas->translate(MARGIN, MARGIN);
-        for (int outset = -15; outset <= 20; outset += 5) {
-            canvas->save();
-            SkRect rect = crop_rect.rect();
-            rect.outset(SkIntToScalar(outset),
-                        SkIntToScalar(outset));
-            SkImageFilter::CropRect big_rect(rect, SkImageFilter::CropRect::kHasAll_CropEdge);
-
-            draw(canvas, checkerboard, rect, SkColorFilterImageFilter::Create(
-                cf_alpha_trans, noop_cropped.get(), &big_rect));
-
-            draw(canvas, checkerboard, rect, SkBlurImageFilter::Create(
-                8.0f, 8.0f, noop_cropped.get(), &big_rect));
-
-            draw(canvas, checkerboard, rect, SkDilateImageFilter::Create(
-                2, 2, noop_cropped.get(), &big_rect));
-
-            draw(canvas, checkerboard, rect, SkErodeImageFilter::Create(
-                2, 2, noop_cropped.get(), &big_rect));
-
-            draw(canvas, checkerboard, rect, SkDropShadowImageFilter::Create(
-                SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(3), SkIntToScalar(3),
-                SK_ColorBLUE, SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
-                noop_cropped.get(), &big_rect));
-
-            draw(canvas, checkerboard, rect, SkDisplacementMapEffect::Create(
-                SkDisplacementMapEffect::kR_ChannelSelectorType,
-                SkDisplacementMapEffect::kR_ChannelSelectorType,
-                SkIntToScalar(12),
-                gradient_circle_source.get(),
-                noop_cropped.get(),
-                &big_rect));
-
-            draw(canvas, checkerboard, rect, SkOffsetImageFilter::Create(
-                SkIntToScalar(-8), SkIntToScalar(16), noop_cropped.get(), &big_rect));
-
-            canvas->restore();
-            canvas->translate(0, SkIntToScalar(80));
-        }
-    }
-
-private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* MyFactory(void*) { return new ImageFiltersCropExpandGM; }
 static skiagm::GMRegistry reg(MyFactory);