skia2/tests/SkLiteDLTest.cpp

/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "SkLiteDL.h"
#include "SkLiteRecorder.h"
#include "SkRSXform.h"
#include "Test.h"

DEF_TEST(SkLiteDL_basics, r) {
    SkLiteDL p;
    p.save();
        p.clipRect(SkRect{2,3,4,5}, kIntersect_SkClipOp, true);
        p.drawRect(SkRect{0,0,9,9}, SkPaint{});
    p.restore();
}

DEF_TEST(SkLiteDL_unbalanced, r) {
    SkLiteRecorder rec;
    SkCanvas* c = &rec;

    SkLiteDL p;
    rec.reset(&p, {2,2,3,3});
    c->save();
        c->scale(2,2);
        c->save();
            c->translate(1,1);
        // missing restore() but SkLiteDL::draw should balance it for us
    c->restore();

    // reinit the recorder so we can playback the original SkLiteDL
    SkLiteDL p2;
    rec.reset(&p2, {2,2,3,3});

    REPORTER_ASSERT(r, 1 == rec.getSaveCount());
    p.draw(c);
    REPORTER_ASSERT(r, 1 == rec.getSaveCount());
}

DEF_TEST(SkLiteRecorder, r) {
    SkLiteDL p;
    SkLiteRecorder rec;
    SkCanvas* c = &rec;

    rec.reset(&p, {2,2,3,3});

    c->save();
        c->clipRect(SkRect{2,3,4,5}, kIntersect_SkClipOp, true);
        c->drawRect(SkRect{0,0,9,9}, SkPaint{});
    c->restore();
}

DEF_TEST(SkLiteRecorder_RecordsFlush, r) {
    SkLiteDL dl;

    SkLiteRecorder canvas;
    canvas.reset(&dl, {0,0,100,100});

    REPORTER_ASSERT(r,  dl.empty());
    canvas.flush();
    REPORTER_ASSERT(r, !dl.empty());
}

// skia:7133 regression test.
// At one point we recorded text before the transforms, which makes it easy for
// the recording buffer to not be suitably aligned for the transforms.
DEF_TEST(SkLiteRecorder_RSXformAlignment, r) {
    SkLiteDL dl;
    SkLiteRecorder canvas;
    canvas.reset(&dl, {0,0,100,100});

    SkPaint paint;
    paint.setTextEncoding(kUTF8_SkTextEncoding);

    // These values don't really matter... we just need 5 valid transforms.
    SkRSXform xforms[] = {
        {1,0, 1,1},
        {1,0, 2,2},
        {1,0, 3,3},
        {1,0, 4,4},
        {1,0, 5,5},
    };
    canvas.drawTextRSXform("hello", 5, xforms, nullptr, paint);

    // We're just checking that this recorded our draw without SkASSERTing in Debug builds.
    REPORTER_ASSERT(r, !dl.empty());
}