reed@google.com | 14debba | 2011-11-10 20:06:01 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | |
| 9 | #include "gm.h" |
| 10 | #include "SkCanvas.h" |
| 11 | |
| 12 | namespace skiagm { |
| 13 | |
| 14 | #define TEXT_SIZE 48 |
| 15 | static const char gText[] = "Hello"; |
| 16 | static const size_t gLen = sizeof(gText) - 1; |
| 17 | |
| 18 | class VertTextGM : public GM { |
| 19 | public: |
| 20 | VertTextGM() {} |
| 21 | |
| 22 | protected: |
| 23 | |
| 24 | SkString onShortName() { |
reed@google.com | 2f6c957 | 2011-11-30 14:58:16 +0000 | [diff] [blame^] | 25 | return SkString("verttext"); |
reed@google.com | 14debba | 2011-11-10 20:06:01 +0000 | [diff] [blame] | 26 | } |
| 27 | |
| 28 | SkISize onISize() { return make_isize(640, 480); } |
| 29 | |
| 30 | static void drawBaseline(SkCanvas* canvas, const SkPaint& paint, |
| 31 | SkScalar x, SkScalar y) { |
| 32 | SkScalar total = paint.measureText(gText, gLen); |
| 33 | |
| 34 | SkPaint p; |
| 35 | p.setAntiAlias(true); |
| 36 | p.setColor(0x80FF0000); |
| 37 | canvas->drawLine(x, y, |
| 38 | paint.isVerticalText() ? x : x + total, |
| 39 | paint.isVerticalText() ? y + total : y, |
| 40 | p); |
| 41 | |
| 42 | p.setColor(0xFF0000FF); |
| 43 | SkScalar adv[gLen]; |
| 44 | paint.getTextWidths(gText, gLen, adv, NULL); |
| 45 | for (size_t i = 0; i < gLen; ++i) { |
| 46 | canvas->drawCircle(x, y, SK_Scalar1 * 3 / 2, p); |
| 47 | if (paint.isVerticalText()) { |
| 48 | y += adv[i]; |
| 49 | } else { |
| 50 | x += adv[i]; |
| 51 | } |
| 52 | } |
| 53 | canvas->drawCircle(x, y, SK_Scalar1 * 3 / 2, p); |
| 54 | } |
| 55 | |
| 56 | virtual void onDraw(SkCanvas* canvas) { |
| 57 | SkScalar x = SkIntToScalar(100); |
| 58 | SkScalar y = SkIntToScalar(50); |
| 59 | |
| 60 | for (int i = 0; i < 4; ++i) { |
| 61 | SkPaint paint; |
| 62 | paint.setAntiAlias(true); |
| 63 | paint.setTextSize(SkIntToScalar(TEXT_SIZE)); |
| 64 | |
| 65 | |
| 66 | paint.setVerticalText(false); |
| 67 | drawBaseline(canvas, paint, x, y); |
| 68 | canvas->drawText(gText, gLen, x, y, paint); |
| 69 | |
| 70 | paint.setVerticalText(true); |
| 71 | drawBaseline(canvas, paint, x, y); |
| 72 | canvas->drawText(gText, gLen, x, y, paint); |
| 73 | |
| 74 | x += SkIntToScalar(40); |
| 75 | y += SkIntToScalar(120); |
| 76 | |
| 77 | canvas->rotate(SkIntToScalar(-15)); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | private: |
| 82 | typedef GM INHERITED; |
| 83 | }; |
| 84 | |
| 85 | /////////////////////////////////////////////////////////////////////////////// |
| 86 | |
| 87 | static GM* MyFactory(void*) { return new VertTextGM; } |
| 88 | static GMRegistry reg(MyFactory); |
| 89 | |
| 90 | } |