/* * 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 "gm/gm.h" #include "include/core/SkBitmap.h" #include "include/core/SkCanvas.h" #include "include/core/SkColor.h" #include "include/core/SkFont.h" #include "include/core/SkFontTypes.h" #include "include/core/SkImageInfo.h" #include "include/core/SkPaint.h" #include "include/core/SkPathEffect.h" #include "include/core/SkPoint.h" #include "include/core/SkScalar.h" #include "include/core/SkTextBlob.h" #include "include/core/SkTypeface.h" #include "include/core/SkTypes.h" #include "include/effects/SkDashPathEffect.h" #include "tools/Resources.h" #include "tools/ToolUtils.h" static void test_nulldev(SkCanvas* canvas) { SkBitmap bm; bm.setInfo(SkImageInfo::MakeN32Premul(30, 30)); // notice: no pixels mom! be sure we don't crash // https://code.google.com/p/chromium/issues/detail?id=352616 SkCanvas c(bm); SkBitmap src; src.allocN32Pixels(10, 10); src.eraseColor(SK_ColorRED); // ensure we don't crash c.writePixels(src, 0, 0); } static void draw_text_stroked(SkCanvas* canvas, const SkPaint& paint, const SkFont& font, SkScalar strokeWidth) { SkPaint p(paint); SkPoint loc = { 20, 435 }; if (strokeWidth > 0) { p.setStyle(SkPaint::kFill_Style); canvas->drawSimpleText("P", 1, SkTextEncoding::kUTF8, loc.fX, loc.fY - 225, font, p); canvas->drawTextBlob(SkTextBlob::MakeFromPosText("P", 1, &loc, font), 0, 0, p); } p.setColor(SK_ColorRED); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(strokeWidth); canvas->drawSimpleText("P", 1, SkTextEncoding::kUTF8, loc.fX, loc.fY - 225, font, p); canvas->drawTextBlob(SkTextBlob::MakeFromPosText("P", 1, &loc, font), 0, 0, p); } static void draw_text_set(SkCanvas* canvas, const SkPaint& paint, const SkFont& font) { SkAutoCanvasRestore acr(canvas, true); draw_text_stroked(canvas, paint, font, 10); canvas->translate(200, 0); draw_text_stroked(canvas, paint, font, 0); const SkScalar intervals[] = { 20, 10, 5, 10 }; const SkScalar phase = 0; canvas->translate(200, 0); SkPaint p(paint); p.setPathEffect(SkDashPathEffect::Make(intervals, SK_ARRAY_COUNT(intervals), phase)); draw_text_stroked(canvas, p, font, 10); } namespace { enum { kBelowThreshold_TextSize = 255, kAboveThreshold_TextSize = 257 }; } DEF_SIMPLE_GM(stroketext, canvas, 1200, 480) { if (true) { test_nulldev(canvas); } SkPaint paint; paint.setAntiAlias(true); SkFont font(ToolUtils::create_portable_typeface(), kBelowThreshold_TextSize); draw_text_set(canvas, paint, font); canvas->translate(600, 0); font.setSize(kAboveThreshold_TextSize); draw_text_set(canvas, paint, font); } DEF_SIMPLE_GM_CAN_FAIL(stroketext_native, canvas, msg, 650, 320) { sk_sp<SkTypeface> ttf = MakeResourceAsTypeface("fonts/Stroking.ttf"); sk_sp<SkTypeface> otf = MakeResourceAsTypeface("fonts/Stroking.otf"); if (!ttf && !otf) { msg->append("No support for ttf or otf."); return skiagm::DrawResult::kSkip; } SkPaint p; p.setAntiAlias(true); p.setStyle(SkPaint::kStroke_Style); p.setStrokeWidth(10); p.setStrokeCap(SkPaint::kRound_Cap); p.setStrokeJoin(SkPaint::kRound_Join); p.setARGB(0xff, 0xbb, 0x00, 0x00); if (ttf) { /* Stroking.ttf is structured like: nothing U+25CB ○ (nothing inside) something U+25C9 ◉ (a tiny thing inside) - off (point off / empty quad with implicit end) (before U+207B ⁻ / after U+208B ₋) + on (point on / empty line) (before U+207A ⁺ / after U+208A ₊) 0 off off (two implicit quads) (before U+2070 ⁰ / after U+2080 ₀) 1 off on (quad with implicit close around) (before U+00B9 ¹ / after U+2081 ₁) 2 on off (quad with implicit close) (before U+00B2 ² / after U+2082 ₂) 3 on on (empty line) (before U+00B3 ³ / after U+2083 ₃) */ SkFont font(ttf, 100); canvas->drawString("○◉ ⁻₋⁺₊", 10, 100, font, p); canvas->drawString("⁰₀¹₁²₂³₃", 10, 200, font, p); } if (otf) { /* Stroking.otf is structured like: nothing U+25CB ○ something U+25C9 ◉ 0 moveto, moveto (before U+2070 ⁰) (nothing there, FreeType ignores these) 1 moveto, empty line, moveto (before U+00B9 ¹) (degenerate lineto) 3 moveto, empty cubic, moveto (before U+00B3 ³) (degenerate cubicto) f moveto, empty flex, moveto (before U+1DA0 ᶠ) (degenerate flex) */ SkFont font(otf, 100); canvas->drawString("○◉ ⁰¹³ᶠ", 10, 300, font, p); } return skiagm::DrawResult::kOk; }