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      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 "SkFontHost.h"
     14 #include "SkGraphics.h"
     15 #include "SkPaint.h"
     16 #include "SkPoint.h"
     17 #include "SkRect.h"
     18 #include "SkTypeface.h"
     19 
     20 ///////////////////////////////////////////////////////////////////////////////
     21 
     22 static const SkColor bgColor = SK_ColorWHITE;
     23 
     24 static void create(SkBitmap* bm, SkIRect bound, SkBitmap::Config config) {
     25     bm->setConfig(config, bound.width(), bound.height());
     26     bm->allocPixels();
     27 }
     28 
     29 static void drawBG(SkCanvas* canvas) {
     30     canvas->drawColor(bgColor);
     31 }
     32 
     33 /** Assumes that the ref draw was completely inside ref canvas --
     34     implies that everything outside is "bgColor".
     35     Checks that all overlap is the same and that all non-overlap on the
     36     ref is "bgColor".
     37  */
     38 static bool compare(const SkBitmap& ref, const SkIRect& iref,
     39                     const SkBitmap& test, const SkIRect& itest)
     40 {
     41     const int xOff = itest.fLeft - iref.fLeft;
     42     const int yOff = itest.fTop - iref.fTop;
     43 
     44     SkAutoLockPixels alpRef(ref);
     45     SkAutoLockPixels alpTest(test);
     46 
     47     for (int y = 0; y < test.height(); ++y) {
     48         for (int x = 0; x < test.width(); ++x) {
     49             SkColor testColor = test.getColor(x, y);
     50             int refX = x + xOff;
     51             int refY = y + yOff;
     52             SkColor refColor;
     53             if (refX >= 0 && refX < ref.width() &&
     54                 refY >= 0 && refY < ref.height())
     55             {
     56                 refColor = ref.getColor(refX, refY);
     57             } else {
     58                 refColor = bgColor;
     59             }
     60             if (refColor != testColor) {
     61                 return false;
     62             }
     63         }
     64     }
     65     return true;
     66 }
     67 
     68 static void test_fontHostStream(skiatest::Reporter* reporter) {
     69 
     70     {
     71         SkPaint paint;
     72         paint.setColor(SK_ColorGRAY);
     73         paint.setTextSize(SkIntToScalar(30));
     74 
     75         SkTypeface* fTypeface = SkTypeface::CreateFromName("Georgia",
     76                                                            SkTypeface::kNormal);
     77         SkSafeUnref(paint.setTypeface(fTypeface));
     78 
     79         SkIRect origRect = SkIRect::MakeWH(64, 64);
     80         SkBitmap origBitmap;
     81         create(&origBitmap, origRect, SkBitmap::kARGB_8888_Config);
     82         SkCanvas origCanvas(origBitmap);
     83 
     84         SkIRect streamRect = SkIRect::MakeWH(64, 64);
     85         SkBitmap streamBitmap;
     86         create(&streamBitmap, streamRect, SkBitmap::kARGB_8888_Config);
     87         SkCanvas streamCanvas(streamBitmap);
     88 
     89         SkPoint point = SkPoint::Make(24, 32);
     90 
     91         // Test: origTypeface and streamTypeface from orig data draw the same
     92         drawBG(&origCanvas);
     93         origCanvas.drawText("A", 1, point.fX, point.fY, paint);
     94 
     95         SkTypeface* origTypeface = paint.getTypeface();
     96         SkAutoTUnref<SkTypeface> aur;
     97         if (NULL == origTypeface) {
     98             origTypeface = aur.reset(SkTypeface::RefDefault());
     99         }
    100 
    101         int ttcIndex;
    102         SkStream* fontData = origTypeface->openStream(&ttcIndex);
    103         SkTypeface* streamTypeface = SkTypeface::CreateFromStream(fontData);
    104         SkSafeUnref(paint.setTypeface(streamTypeface));
    105         drawBG(&streamCanvas);
    106         streamCanvas.drawPosText("A", 1, &point, paint);
    107 
    108         REPORTER_ASSERT(reporter,
    109                         compare(origBitmap, origRect, streamBitmap, streamRect));
    110     }
    111     //Make sure the typeface is deleted and removed.
    112     SkGraphics::PurgeFontCache();
    113 }
    114 
    115 #include "TestClassDef.h"
    116 DEFINE_TESTCLASS("FontHost::CreateTypefaceFromStream", FontHostStreamTestClass, test_fontHostStream)
    117