FontMgrFontConfigTest.cpp File Reference

#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontArguments.h"
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontStyle.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/ports/SkFontMgr_fontconfig.h"
#include "tests/Test.h"
#include "tools/Resources.h"
#include <fontconfig/fontconfig.h>
#include <array>
#include <memory>

Go to the source code of this file.

Functions
	DEF_TEST (FontMgrFontConfig, reporter)

Function Documentation

DEF_TEST()

DEF_TEST	(	FontMgrFontConfig	,
		reporter
	)

Definition at line 63 of file FontMgrFontConfigTest.cpp.

                                      {
    FcConfig* config = build_fontconfig_with_fontfile("/fonts/Distortable.ttf");
 
    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, std::size(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);
    }
}