1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 #include "SkTypes.h" 8 9 #include "Test.h" 10 #include "SkBitmap.h" 11 #include "SkCanvas.h" 12 #include "SkColor.h" 13 #include "SkPaint.h" 14 #include "SkPoint.h" 15 #include "SkRect.h" 16 17 /////////////////////////////////////////////////////////////////////////////// 18 19 static const SkColor bgColor = SK_ColorWHITE; 20 21 static void create(SkBitmap* bm, SkIRect bound, SkBitmap::Config config) { 22 bm->setConfig(config, bound.width(), bound.height()); 23 bm->allocPixels(); 24 } 25 26 static void drawBG(SkCanvas* canvas) { 27 canvas->drawColor(bgColor); 28 } 29 30 /** Assumes that the ref draw was completely inside ref canvas -- 31 implies that everything outside is "bgColor". 32 Checks that all overlap is the same and that all non-overlap on the 33 ref is "bgColor". 34 */ 35 static bool compare(const SkBitmap& ref, const SkIRect& iref, 36 const SkBitmap& test, const SkIRect& itest) 37 { 38 const int xOff = itest.fLeft - iref.fLeft; 39 const int yOff = itest.fTop - iref.fTop; 40 41 SkAutoLockPixels alpRef(ref); 42 SkAutoLockPixels alpTest(test); 43 44 for (int y = 0; y < test.height(); ++y) { 45 for (int x = 0; x < test.width(); ++x) { 46 SkColor testColor = test.getColor(x, y); 47 int refX = x + xOff; 48 int refY = y + yOff; 49 SkColor refColor; 50 if (refX >= 0 && refX < ref.width() && 51 refY >= 0 && refY < ref.height()) 52 { 53 refColor = ref.getColor(refX, refY); 54 } else { 55 refColor = bgColor; 56 } 57 if (refColor != testColor) { 58 return false; 59 } 60 } 61 } 62 return true; 63 } 64 65 static void test_drawText(skiatest::Reporter* reporter) { 66 67 SkPaint paint; 68 paint.setColor(SK_ColorGRAY); 69 paint.setTextSize(SkIntToScalar(20)); 70 71 SkIRect drawTextRect = SkIRect::MakeWH(64, 64); 72 SkBitmap drawTextBitmap; 73 create(&drawTextBitmap, drawTextRect, SkBitmap::kARGB_8888_Config); 74 SkCanvas drawTextCanvas(drawTextBitmap); 75 76 SkIRect drawPosTextRect = SkIRect::MakeWH(64, 64); 77 SkBitmap drawPosTextBitmap; 78 create(&drawPosTextBitmap, drawPosTextRect, SkBitmap::kARGB_8888_Config); 79 SkCanvas drawPosTextCanvas(drawPosTextBitmap); 80 81 for (float offsetY = 0.0f; offsetY < 1.0f; offsetY += (1.0f / 16.0f)) { 82 for (float offsetX = 0.0f; offsetX < 1.0f; offsetX += (1.0f / 16.0f)) { 83 SkPoint point = SkPoint::Make(SkFloatToScalar(25.0f + offsetX), 84 SkFloatToScalar(25.0f + offsetY)); 85 86 for (int align = 0; align < SkPaint::kAlignCount; ++align) { 87 paint.setTextAlign(static_cast<SkPaint::Align>(align)); 88 89 for (unsigned int flags = 0; flags < (1 << 3); ++flags) { 90 static const unsigned int antiAliasFlag = 1; 91 static const unsigned int subpixelFlag = 1 << 1; 92 static const unsigned int lcdFlag = 1 << 2; 93 94 paint.setAntiAlias(SkToBool(flags & antiAliasFlag)); 95 paint.setSubpixelText(SkToBool(flags & subpixelFlag)); 96 paint.setLCDRenderText(SkToBool(flags & lcdFlag)); 97 98 // Test: drawText and drawPosText draw the same. 99 drawBG(&drawTextCanvas); 100 drawTextCanvas.drawText("A", 1, point.fX, point.fY, paint); 101 102 drawBG(&drawPosTextCanvas); 103 drawPosTextCanvas.drawPosText("A", 1, &point, paint); 104 105 REPORTER_ASSERT(reporter, 106 compare(drawTextBitmap, drawTextRect, 107 drawPosTextBitmap, drawPosTextRect)); 108 } 109 } 110 } 111 } 112 } 113 114 #include "TestClassDef.h" 115 DEFINE_TESTCLASS("DrawText_DrawPosText", DrawTextTestClass, test_drawText) 116