Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018 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 | #include "gm.h" |
| 9 | #include "sk_tool_utils.h" |
| 10 | |
| 11 | #include "Resources.h" |
| 12 | #include "SkCanvas.h" |
| 13 | #include "SkStream.h" |
Herb Derby | 5f7b014 | 2018-12-14 16:47:45 -0500 | [diff] [blame] | 14 | #include "SkTextBlob.h" |
Hal Canary | c640d0d | 2018-06-13 09:59:02 -0400 | [diff] [blame] | 15 | #include "SkTo.h" |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 16 | #include "SkTypeface.h" |
| 17 | |
Hal Canary | 7db6e28 | 2018-12-17 14:21:31 -0500 | [diff] [blame] | 18 | static sk_sp<SkTextBlob> make_hpos_test_blob_utf8(const char* text, const SkFont& font) { |
| 19 | constexpr SkTextEncoding enc = SkTextEncoding::kUTF8; |
| 20 | SkTextBlobBuilder builder; |
| 21 | size_t len = strlen(text); |
| 22 | int glyphCount = font.countText(text, len, enc); |
| 23 | const auto& buffer = builder.allocRunPosH(font, glyphCount, 0); |
| 24 | (void)font.textToGlyphs(text, len, enc, buffer.glyphs, glyphCount); |
| 25 | font.getXPos(buffer.glyphs, glyphCount, buffer.pos); |
| 26 | return builder.make(); |
| 27 | } |
| 28 | |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 29 | namespace skiagm { |
| 30 | |
| 31 | class ScaledEmojiGM : public GM { |
| 32 | public: |
| 33 | ScaledEmojiGM() { } |
| 34 | |
| 35 | protected: |
| 36 | struct EmojiFont { |
| 37 | sk_sp<SkTypeface> fTypeface; |
| 38 | const char* fText; |
| 39 | } fEmojiFont; |
| 40 | |
| 41 | void onOnceBeforeDraw() override { |
| 42 | fEmojiFont.fTypeface = sk_tool_utils::emoji_typeface(); |
| 43 | fEmojiFont.fText = sk_tool_utils::emoji_sample_text(); |
| 44 | } |
| 45 | |
| 46 | SkString onShortName() override { |
| 47 | SkString name("scaledemoji"); |
| 48 | name.append(sk_tool_utils::platform_font_manager()); |
| 49 | return name; |
| 50 | } |
| 51 | |
| 52 | SkISize onISize() override { return SkISize::Make(1200, 1200); } |
| 53 | |
| 54 | void onDraw(SkCanvas* canvas) override { |
| 55 | |
Mike Klein | d46dce3 | 2018-08-16 10:17:03 -0400 | [diff] [blame] | 56 | canvas->drawColor(SK_ColorGRAY); |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 57 | |
| 58 | SkPaint paint; |
Mike Reed | f78b7ea | 2018-12-25 22:06:17 -0500 | [diff] [blame] | 59 | SkFont font(fEmojiFont.fTypeface); |
| 60 | font.setEdging(SkFont::Edging::kAlias); |
| 61 | |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 62 | const char* text = fEmojiFont.fText; |
| 63 | |
| 64 | // draw text at different point sizes |
| 65 | // Testing GPU bitmap path, SDF path with no scaling, |
| 66 | // SDF path with scaling, path rendering with scaling |
Mike Reed | b5784ac | 2018-11-12 09:35:15 -0500 | [diff] [blame] | 67 | SkFontMetrics metrics; |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 68 | SkScalar y = 0; |
| 69 | for (SkScalar textSize : { 70, 180, 270, 340 }) { |
Mike Reed | f78b7ea | 2018-12-25 22:06:17 -0500 | [diff] [blame] | 70 | font.setSize(textSize); |
| 71 | font.getMetrics(&metrics); |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 72 | y += -metrics.fAscent; |
Mike Reed | f78b7ea | 2018-12-25 22:06:17 -0500 | [diff] [blame] | 73 | canvas->drawSimpleText(text, strlen(text), kUTF8_SkTextEncoding, 10, y, font, paint); |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 74 | y += metrics.fDescent + metrics.fLeading; |
| 75 | } |
| 76 | |
| 77 | } |
| 78 | |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 79 | private: |
| 80 | typedef GM INHERITED; |
| 81 | }; |
| 82 | |
| 83 | class ScaledEmojiPosGM : public GM { |
| 84 | public: |
| 85 | ScaledEmojiPosGM() {} |
| 86 | |
| 87 | protected: |
| 88 | struct EmojiFont { |
| 89 | sk_sp<SkTypeface> fTypeface; |
| 90 | const char* fText; |
| 91 | } fEmojiFont; |
| 92 | |
| 93 | void onOnceBeforeDraw() override { |
| 94 | fEmojiFont.fTypeface = sk_tool_utils::emoji_typeface(); |
| 95 | fEmojiFont.fText = sk_tool_utils::emoji_sample_text(); |
| 96 | } |
| 97 | |
| 98 | SkString onShortName() override { |
| 99 | SkString name("scaledemojipos"); |
| 100 | name.append(sk_tool_utils::platform_font_manager()); |
| 101 | return name; |
| 102 | } |
| 103 | |
| 104 | SkISize onISize() override { return SkISize::Make(1200, 1200); } |
| 105 | |
| 106 | void onDraw(SkCanvas* canvas) override { |
| 107 | |
Mike Klein | d46dce3 | 2018-08-16 10:17:03 -0400 | [diff] [blame] | 108 | canvas->drawColor(SK_ColorGRAY); |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 109 | |
| 110 | SkPaint paint; |
Herb Derby | 5f7b014 | 2018-12-14 16:47:45 -0500 | [diff] [blame] | 111 | SkFont font; |
| 112 | font.setTypeface(fEmojiFont.fTypeface); |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 113 | const char* text = fEmojiFont.fText; |
| 114 | |
| 115 | // draw text at different point sizes |
| 116 | // Testing GPU bitmap path, SDF path with no scaling, |
| 117 | // SDF path with scaling, path rendering with scaling |
Mike Reed | b5784ac | 2018-11-12 09:35:15 -0500 | [diff] [blame] | 118 | SkFontMetrics metrics; |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 119 | SkScalar y = 0; |
| 120 | for (SkScalar textSize : { 70, 180, 270, 340 }) { |
Herb Derby | 5f7b014 | 2018-12-14 16:47:45 -0500 | [diff] [blame] | 121 | font.setSize(textSize); |
| 122 | font.getMetrics(&metrics); |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 123 | y += -metrics.fAscent; |
| 124 | |
Hal Canary | 7db6e28 | 2018-12-17 14:21:31 -0500 | [diff] [blame] | 125 | sk_sp<SkTextBlob> blob = make_hpos_test_blob_utf8(text, font); |
Herb Derby | 5f7b014 | 2018-12-14 16:47:45 -0500 | [diff] [blame] | 126 | // Draw with an origin. |
| 127 | canvas->drawTextBlob(blob, 10, y, paint); |
| 128 | |
| 129 | // Draw with shifted canvas. |
| 130 | canvas->save(); |
| 131 | canvas->translate(750, 0); |
| 132 | canvas->drawTextBlob(blob, 10, y, paint); |
| 133 | canvas->restore(); |
| 134 | |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 135 | y += metrics.fDescent + metrics.fLeading; |
| 136 | } |
| 137 | |
| 138 | } |
| 139 | |
| 140 | private: |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 141 | typedef GM INHERITED; |
| 142 | }; |
| 143 | |
| 144 | ////////////////////////////////////////////////////////////////////////////// |
| 145 | |
| 146 | DEF_GM(return new ScaledEmojiGM;) |
Jim Van Verth | 080a928 | 2018-03-02 10:41:43 -0500 | [diff] [blame] | 147 | DEF_GM(return new ScaledEmojiPosGM;) |
Jim Van Verth | 1b12545 | 2018-02-13 15:21:34 -0500 | [diff] [blame] | 148 | |
| 149 | } |