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- /*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkCanvas.h"
- #include "include/core/SkFont.h"
- #include "include/core/SkFontMgr.h"
- #include "include/core/SkTypeface.h"
- #include "include/ports/SkFontMgr_fontconfig.h"
- #include "tests/Test.h"
- #include "tools/Resources.h"
- #include <fontconfig/fontconfig.h>
- static bool bitmap_compare(const SkBitmap& ref, const SkBitmap& test) {
- for (int y = 0; y < test.height(); ++y) {
- for (int x = 0; x < test.width(); ++x) {
- SkColor testColor = test.getColor(x, y);
- SkColor refColor = ref.getColor(x, y);
- if (refColor != testColor) {
- return false;
- }
- }
- }
- return true;
- }
- DEF_TEST(FontMgrFontConfig, reporter) {
- FcConfig* config = FcConfigCreate();
- // FontConfig may modify the passed path (make absolute or other).
- FcConfigSetSysRoot(config, reinterpret_cast<const FcChar8*>(GetResourcePath("").c_str()));
- // FontConfig will lexically compare paths against its version of the sysroot.
- SkString distortablePath(reinterpret_cast<const char*>(FcConfigGetSysRoot(config)));
- distortablePath += "/fonts/Distortable.ttf";
- FcConfigAppFontAddFile(config, reinterpret_cast<const FcChar8*>(distortablePath.c_str()));
- FcConfigBuildFonts(config);
- sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_FontConfig(config));
- sk_sp<SkTypeface> typeface(fontMgr->legacyMakeTypeface("Distortable", SkFontStyle()));
- if (!typeface) {
- ERRORF(reporter, "Could not find typeface. FcVersion: %d", FcGetVersion());
- return;
- }
- SkBitmap bitmapStream;
- bitmapStream.allocN32Pixels(64, 64);
- SkCanvas canvasStream(bitmapStream);
- canvasStream.drawColor(SK_ColorWHITE);
- SkBitmap bitmapClone;
- bitmapClone.allocN32Pixels(64, 64);
- SkCanvas canvasClone(bitmapClone);
- canvasStream.drawColor(SK_ColorWHITE);
- SkPaint paint;
- paint.setColor(SK_ColorGRAY);
- constexpr float kTextSize = 20;
- std::unique_ptr<SkStreamAsset> distortableStream(
- GetResourceAsStream("fonts/Distortable.ttf"));
- if (!distortableStream) {
- return;
- }
- SkPoint point = SkPoint::Make(20.0f, 20.0f);
- SkFourByteTag tag = SkSetFourByteTag('w', 'g', 'h', 't');
- for (int i = 0; i < 10; ++i) {
- SkScalar styleValue =
- SkDoubleToScalar(0.5 + i * ((2.0 - 0.5) / 10));
- SkFontArguments::VariationPosition::Coordinate
- coordinates[] = {{tag, styleValue}};
- SkFontArguments::VariationPosition
- position = {coordinates, SK_ARRAY_COUNT(coordinates)};
- SkFont fontStream(
- fontMgr->makeFromStream(distortableStream->duplicate(),
- SkFontArguments().setVariationDesignPosition(position)),
- kTextSize);
- fontStream.setEdging(SkFont::Edging::kSubpixelAntiAlias);
- SkFont fontClone(
- typeface->makeClone(SkFontArguments().setVariationDesignPosition(position)), kTextSize);
- fontClone.setEdging(SkFont::Edging::kSubpixelAntiAlias);
- constexpr char text[] = "abc";
- canvasStream.drawColor(SK_ColorWHITE);
- canvasStream.drawString(text, point.fX, point.fY, fontStream, paint);
- canvasClone.drawColor(SK_ColorWHITE);
- canvasClone.drawString(text, point.fX, point.fY, fontClone, paint);
- bool success = bitmap_compare(bitmapStream, bitmapClone);
- REPORTER_ASSERT(reporter, success);
- }
- }
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