1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "Test.h" 9 #include "SkBitmap.h" 10 #include "SkCanvas.h" 11 12 static bool check_for_all_zeros(const SkBitmap& bm) { 13 SkAutoLockPixels alp(bm); 14 15 size_t count = bm.width() * bm.bytesPerPixel(); 16 for (int y = 0; y < bm.height(); y++) { 17 const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y)); 18 for (size_t i = 0; i < count; i++) { 19 if (ptr[i]) { 20 return false; 21 } 22 } 23 } 24 return true; 25 } 26 27 static const int gWidth = 256; 28 static const int gHeight = 256; 29 30 static void create(SkBitmap* bm, SkBitmap::Config config, SkColor color) { 31 bm->setConfig(config, gWidth, gHeight); 32 bm->allocPixels(); 33 bm->eraseColor(color); 34 } 35 36 static void TestDrawBitmapRect(skiatest::Reporter* reporter) { 37 SkBitmap src, dst; 38 39 create(&src, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF); 40 create(&dst, SkBitmap::kARGB_8888_Config, 0); 41 42 SkCanvas canvas(dst); 43 44 SkIRect srcR = { gWidth, 0, gWidth + 16, 16 }; 45 SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) }; 46 47 canvas.drawBitmapRect(src, &srcR, dstR, NULL); 48 49 // ensure that we draw nothing if srcR does not intersect the bitmap 50 REPORTER_ASSERT(reporter, check_for_all_zeros(dst)); 51 } 52 53 #include "TestClassDef.h" 54 DEFINE_TESTCLASS("DrawBitmapRect", TestDrawBitmapRectClass, TestDrawBitmapRect) 55
