skia2/tests/FontObjTest.cpp
Mike Reed e5f9cfad7b expand flag to include all text-related paint fields
Bug: skia:
Change-Id: I8453a6d607df4902cd05c5c9bc6162feda04ef9c
Reviewed-on: https://skia-review.googlesource.com/c/182969
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
2019-01-10 20:06:07 +00:00

94 lines
3.1 KiB
C++

/*
* 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 "SkFont.h"
#include "SkPaint.h"
#include "SkTypeface.h"
#include "Test.h"
#ifdef SK_SUPPORT_LEGACY_PAINT_TEXTMEASURE
static void test_fontmetrics(skiatest::Reporter* reporter,
const SkPaint& paint, const SkFont& font) {
SkFontMetrics fm0, fm1;
SkScalar h0 = paint.getFontMetrics(&fm0);
SkScalar h1 = font.getMetrics(&fm1);
REPORTER_ASSERT(reporter, h0 == h1);
#define CMP(field) REPORTER_ASSERT(reporter, fm0.field == fm1.field)
CMP(fFlags);
CMP(fTop);
CMP(fAscent);
CMP(fDescent);
CMP(fBottom);
CMP(fLeading);
#undef CMP
}
DEF_TEST(FontObj_test_cachedfont, reporter) {
SkPaint paint;
char txt[] = "long .text .with .lots .of.dots.";
unsigned mask = SkPaint::kAntiAlias_Flag |
SkPaint::kFakeBoldText_Flag |
SkPaint::kLinearText_Flag |
SkPaint::kSubpixelText_Flag |
SkPaint::kLCDRenderText_Flag |
SkPaint::kEmbeddedBitmapText_Flag |
SkPaint::kAutoHinting_Flag;
paint.setStrokeWidth(2);
{
for (unsigned flags = 0; flags <= 0xFFF; ++flags) {
if (flags & ~mask) {
continue;
}
paint.setFlags(flags);
for (int hint = 0; hint <= 3; ++hint) {
paint.setHinting((SkFontHinting)hint);
{
for (auto style : { SkPaint::kFill_Style, SkPaint::kStroke_Style}) {
paint.setStyle(style);
const SkFont font(SkFont::LEGACY_ExtractFromPaint(paint));
test_fontmetrics(reporter, paint, font);
SkRect pbounds, fbounds;
// Requesting the bounds forces a generateMetrics call.
SkScalar pwidth = paint.measureText(txt, strlen(txt), &pbounds);
SkScalar fwidth = font.measureText(txt, strlen(txt), kUTF8_SkTextEncoding,
&fbounds, &paint);
REPORTER_ASSERT(reporter, pwidth == fwidth);
REPORTER_ASSERT(reporter, pbounds == fbounds);
}
}
}
}
}
}
#endif // SK_SUPPORT_LEGACY_PAINT_TEXTMEASURE
#ifdef SK_SUPPORT_LEGACY_PAINT_FONT_FIELDS
DEF_TEST(FontObj_test_aa_hinting, reporter) {
SkPaint paint;
for (bool aa : {false, true}) {
paint.setAntiAlias(aa);
for (int hint = 0; hint <= 3; ++hint) {
paint.setHinting((SkFontHinting)hint);
SkFont font = SkFont::LEGACY_ExtractFromPaint(paint);
SkPaint p2;
font.LEGACY_applyToPaint(&p2);
REPORTER_ASSERT(reporter, paint.isAntiAlias() == p2.isAntiAlias());
REPORTER_ASSERT(reporter, paint.getHinting() == p2.getHinting());
}
}
}
#endif
// need tests for SkStrSearch