1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <gtest/gtest.h> 18 19 #include "GammaFontRenderer.h" 20 #include "tests/common/TestUtils.h" 21 22 using namespace android::uirenderer; 23 24 static bool isZero(uint8_t* data, int size) { 25 for (int i = 0; i < size; i++) { 26 if (data[i]) return false; 27 } 28 return true; 29 } 30 31 RENDERTHREAD_TEST(FontRenderer, renderDropShadow) { 32 SkPaint paint; 33 paint.setTextSize(10); 34 paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); 35 GammaFontRenderer gammaFontRenderer; 36 FontRenderer& fontRenderer = gammaFontRenderer.getFontRenderer(); 37 fontRenderer.setFont(&paint, SkMatrix::I()); 38 39 std::vector<glyph_t> glyphs; 40 std::vector<float> positions; 41 float totalAdvance; 42 Rect bounds; 43 TestUtils::layoutTextUnscaled(paint, "This is a test", 44 &glyphs, &positions, &totalAdvance, &bounds); 45 46 for (int radius : {28, 20, 2}) { 47 auto result = fontRenderer.renderDropShadow(&paint, glyphs.data(), glyphs.size(), 48 radius, positions.data()); 49 ASSERT_NE(nullptr, result.image); 50 EXPECT_FALSE(isZero(result.image, result.width * result.height)); 51 EXPECT_LE(bounds.getWidth() + radius * 2, (int) result.width); 52 EXPECT_LE(bounds.getHeight() + radius * 2, (int) result.height); 53 delete result.image; 54 } 55 } 56
