Sample/Filter2View: make it work without /skimages

Change-Id: I8958e026ca9e2c5a6c99a7a1cd1ec97088c25fe9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225548
Commit-Queue: Hal Canary <[email protected]>
Reviewed-by: Ben Wagner <[email protected]>

Author: HalCanary

samplecode/DecodeFile.h

@@ -13,11 +13,10 @@
 #include "include/core/SkData.h"
 #include "include/core/SkImage.h"
 
-static inline bool decode_file(const char* filename, SkBitmap* bitmap,
+static inline bool decode_file(sk_sp<SkData> data, SkBitmap* bitmap,
                                SkColorType colorType = kN32_SkColorType,
                                bool requireUnpremul = false) {
-    sk_sp<SkData> data(SkData::MakeFromFileName(filename));
-    std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(data);
+    std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(std::move(data));
     if (!codec) {
         return false;
     }
@@ -34,6 +33,12 @@ static inline bool decode_file(const char* filename, SkBitmap* bitmap,
     return SkCodec::kSuccess == codec->getPixels(info, bitmap->getPixels(), bitmap->rowBytes());
 }
 
+static inline bool decode_file(const char* filename, SkBitmap* bitmap,
+                               SkColorType colorType = kN32_SkColorType,
+                               bool requireUnpremul = false) {
+    return decode_file(SkData::MakeFromFileName(filename), bitmap, colorType, requireUnpremul);
+}
+
 static inline sk_sp<SkImage> decode_file(const char filename[]) {
     sk_sp<SkData> data(SkData::MakeFromFileName(filename));
     return data ? SkImage::MakeFromEncoded(data) : nullptr;

samplecode/SampleFilter2.cpp

@@ -6,47 +6,40 @@
  */
 
 #include "include/core/SkCanvas.h"
-#include "include/core/SkColorFilter.h"
-#include "include/core/SkColorPriv.h"
-#include "include/core/SkGraphics.h"
-#include "include/core/SkPath.h"
-#include "include/core/SkRegion.h"
-#include "include/core/SkShader.h"
+#include "include/core/SkFont.h"
 #include "include/core/SkString.h"
-#include "include/core/SkTime.h"
-#include "include/effects/SkGradientShader.h"
 #include "include/utils/SkTextUtils.h"
 #include "samplecode/DecodeFile.h"
 #include "samplecode/Sample.h"
-#include "src/utils/SkUTF.h"
+#include "tools/Resources.h"
+
+#include <vector>
 
 static const char* gNames[] = {
-    "/skimages/background_01.png"
+    "images/mandrill_512_q075.jpg",
+    "images/dog.jpg",
 };
 
-class Filter2View : public Sample {
-public:
-    std::unique_ptr<SkBitmap[]> fBitmaps;
-    int fBitmapCount;
-    int fCurrIndex;
-
-    Filter2View() {
-        fBitmapCount = SK_ARRAY_COUNT(gNames)*2;
-        fBitmaps.reset(new SkBitmap[fBitmapCount]);
+struct Filter2View : public Sample {
+    std::vector<SkBitmap> fBitmaps;
 
-        for (int i = 0; i < fBitmapCount/2; i++) {
-            decode_file(gNames[i], &fBitmaps[i]);
+    void onOnceBeforeDraw() override {
+        SkASSERT(fBitmaps.empty());
+        fBitmaps.reserve(SK_ARRAY_COUNT(gNames) * 2);
+        for (const char* name : gNames) {
+            SkBitmap bitmap;
+            (void)decode_file(GetResourceAsData(name), &bitmap);
+            fBitmaps.push_back(std::move(bitmap));
         }
-        for (int i = fBitmapCount/2; i < fBitmapCount; i++) {
-            decode_file(gNames[i-fBitmapCount/2], &fBitmaps[i], kRGB_565_SkColorType);
+        for (const char* name : gNames) {
+            SkBitmap bitmap;
+            (void)decode_file(GetResourceAsData(name), &bitmap, kRGB_565_SkColorType);
+            fBitmaps.push_back(std::move(bitmap));
         }
-        fCurrIndex = 0;
-
         this->setBGColor(SK_ColorGRAY);
     }
 
-protected:
-    SkString name() override { return SkStringPrintf("Filter/Dither %s", gNames[fCurrIndex]); }
+    SkString name() override { return SkString("Filter/Dither"); }
 
     void onDrawContent(SkCanvas* canvas) override {
         canvas->translate(SkIntToScalar(10), SkIntToScalar(50));
@@ -62,8 +55,8 @@ class Filter2View : public Sample {
             paint.setFilterQuality(k == 1 ? kLow_SkFilterQuality : kNone_SkFilterQuality);
             for (int j = 0; j < 2; j++) {
                 paint.setDither(j == 1);
-                for (int i = 0; i < fBitmapCount; i++) {
-                    SkScalar x = (k * fBitmapCount + j) * W;
+                for (int i = 0; i < (int)fBitmaps.size(); i++) {
+                    SkScalar x = (k * (int)fBitmaps.size() + j) * W;
                     SkScalar y = i * H;
                     x = SkScalarRoundToScalar(x);
                     y = SkScalarRoundToScalar(y);
@@ -88,11 +81,5 @@ class Filter2View : public Sample {
             }
         }
     }
-
-private:
-    typedef Sample INHERITED;
 };
-
-//////////////////////////////////////////////////////////////////////////////
-
 DEF_SAMPLE( return new Filter2View(); )