src/third_party/skia/tests/AndroidPaintTest.cpp

   1 // SkPaints only have an SkPaintOptionsAndroid if SK_BUILD_FOR_ANDROID is true.
   2 #ifdef SK_BUILD_FOR_ANDROID
   3
   4 #include "SkReadBuffer.h"
   5 #include "SkWriteBuffer.h"
   6 #include "SkPaint.h"
   7 #include "SkPaintOptionsAndroid.h"
   8 #include "Test.h"
   9
  10 static size_t Reconstruct(const SkPaint& src, SkPaint* dst) {
  11     SkWriteBuffer writer;
  12     src.flatten(writer);
  13
  14     const size_t size = writer.bytesWritten();
  15     SkAutoMalloc bytes(size);
  16     writer.writeToMemory(bytes.get());
  17
  18     SkReadBuffer reader(bytes.get(), size);
  19     dst->unflatten(reader);
  20
  21     return size;
  22 }
  23
  24 DEF_TEST(AndroidOptionsSerialization, reporter) {
  25     // We want to make sure that Android's paint options survive a flatten/unflatten round trip.
  26     // These are all non-default options.
  27     SkPaintOptionsAndroid options;
  28     options.setLanguage("ja-JP");
  29     options.setFontVariant(SkPaintOptionsAndroid::kElegant_Variant);
  30     options.setUseFontFallbacks(true);
  31
  32     SkPaint paint;
  33     paint.setPaintOptionsAndroid(options);
  34
  35     SkPaint reconstructed;
  36     Reconstruct(paint, &reconstructed);
  37
  38     REPORTER_ASSERT(reporter, options == reconstructed.getPaintOptionsAndroid());
  39 }
  40
  41 DEF_TEST(AndroidOptionsSerializationReverse, reporter) {
  42     // Opposite test of above: make sure the serialized default values of a paint overwrite
  43     // non-default values on the paint we're unflattening into.
  44     const SkPaint defaultOptions;
  45
  46     SkPaintOptionsAndroid options;
  47     options.setLanguage("ja-JP");
  48     options.setFontVariant(SkPaintOptionsAndroid::kElegant_Variant);
  49     options.setUseFontFallbacks(true);
  50     SkPaint nonDefaultOptions;
  51     nonDefaultOptions.setPaintOptionsAndroid(options);
  52
  53     Reconstruct(defaultOptions, &nonDefaultOptions);
  54
  55     REPORTER_ASSERT(reporter,
  56             defaultOptions.getPaintOptionsAndroid() ==
  57             nonDefaultOptions.getPaintOptionsAndroid());
  58 }
  59
  60 DEF_TEST(AndroidOptionsSize, reporter) {
  61     // A paint with default android options should serialize to something smaller than
  62     // a paint with non-default android options.
  63
  64     SkPaint defaultOptions;
  65
  66     SkPaintOptionsAndroid options;
  67     options.setUseFontFallbacks(true);
  68     SkPaint nonDefaultOptions;
  69     nonDefaultOptions.setPaintOptionsAndroid(options);
  70
  71     SkPaint dummy;
  72
  73     REPORTER_ASSERT(reporter,
  74                     Reconstruct(defaultOptions, &dummy) < Reconstruct(nonDefaultOptions, &dummy));
  75 }
  76
  77 #endif  // SK_BUILD_FOR_ANDROID