skia2/docs/examples/text_rendering.cpp
Hal Canary 6c8422c671 add more docs/examples from named fiddles.
ignore offscreen, srgb, and animated fiddles for now.

Change-Id: I923131b684865698e6cda138b004930e11f504d5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/263713
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2020-01-14 19:22:26 +00:00

42 lines
1.8 KiB
C++

// Copyright 2020 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
REG_FIDDLE(text_rendering, 256, 256, false, 0) {
void draw(SkCanvas* canvas) {
const char* fontFamily = nullptr; // Default system family, if it exists.
SkFontStyle fontStyle; // Default is normal weight, normal width, upright slant.
sk_sp<SkFontMgr> fontManager = SkFontMgr::RefDefault();
sk_sp<SkTypeface> typeface = fontManager->legacyMakeTypeface(fontFamily, fontStyle);
SkFont font1(typeface, 64.0f, 1.0f, 0.0f);
SkFont font2(typeface, 64.0f, 1.5f, 0.0f);
font1.setEdging(SkFont::Edging::kAntiAlias);
font2.setEdging(SkFont::Edging::kAntiAlias);
// Note: MakeFromString may fail to produce expected results if the typeface
// does not have glyphs for the characters in the string. The characters
// will not be kerned or shaped beyond a simple mapping from one Unicode
// code point to one glyph with a default advance.
sk_sp<SkTextBlob> blob1 = SkTextBlob::MakeFromString("Skia", font1);
sk_sp<SkTextBlob> blob2 = SkTextBlob::MakeFromString("Skia", font2);
SkPaint paint1, paint2, paint3;
paint1.setAntiAlias(true);
paint1.setColor(SkColorSetARGB(0xFF, 0x42, 0x85, 0xF4));
paint2.setAntiAlias(true);
paint2.setColor(SkColorSetARGB(0xFF, 0xDB, 0x44, 0x37));
paint2.setStyle(SkPaint::kStroke_Style);
paint2.setStrokeWidth(3.0f);
paint3.setAntiAlias(true);
paint3.setColor(SkColorSetARGB(0xFF, 0x0F, 0x9D, 0x58));
canvas->clear(SK_ColorWHITE);
canvas->drawTextBlob(blob1.get(), 20.0f, 64.0f, paint1);
canvas->drawTextBlob(blob1.get(), 20.0f, 144.0f, paint2);
canvas->drawTextBlob(blob2.get(), 20.0f, 224.0f, paint3);
}
} // END FIDDLE