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- /*
- * Copyright 2013 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/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFont.h"
- #include "include/core/SkFontTypes.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkTextBlob.h"
- #include "include/core/SkTypeface.h"
- #include "tools/Resources.h"
- #include "tools/ToolUtils.h"
- #include <string.h>
- namespace skiagm {
- static void draw_blob(SkCanvas* canvas, const SkTextBlob* blob, const SkPaint& skPaint,
- const SkRect& clipRect) {
- SkPaint clipHairline;
- clipHairline.setColor(SK_ColorWHITE);
- clipHairline.setStyle(SkPaint::kStroke_Style);
- SkPaint paint(skPaint);
- canvas->save();
- canvas->drawRect(clipRect, clipHairline);
- paint.setAlphaf(0.125f);
- canvas->drawTextBlob(blob, 0, 0, paint);
- canvas->clipRect(clipRect);
- paint.setAlphaf(1.0f);
- canvas->drawTextBlob(blob, 0, 0, paint);
- canvas->restore();
- }
- class MixedTextBlobsGM : public GM {
- public:
- MixedTextBlobsGM() { }
- protected:
- void onOnceBeforeDraw() override {
- fEmojiTypeface = ToolUtils::planet_typeface();
- fEmojiText = "♁♃";
- fReallyBigATypeface = MakeResourceAsTypeface("fonts/ReallyBigA.ttf");
- SkTextBlobBuilder builder;
- // make textblob
- // Text so large we draw as paths
- SkFont font(ToolUtils::create_portable_typeface(), 385);
- font.setEdging(SkFont::Edging::kAlias);
- const char* text = "O";
- SkRect bounds;
- font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
- SkScalar yOffset = bounds.height();
- ToolUtils::add_to_text_blob(&builder, text, font, 10, yOffset);
- SkScalar corruptedAx = bounds.width();
- SkScalar corruptedAy = yOffset;
- const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
- const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
- SkScalar xOffset = boundsHalfWidth;
- yOffset = boundsHalfHeight;
- // LCD
- font.setSize(32);
- font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
- font.setSubpixel(true);
- text = "LCD!!!!!";
- font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
- ToolUtils::add_to_text_blob(&builder,
- text,
- font,
- xOffset - bounds.width() * 0.25f,
- yOffset - bounds.height() * 0.5f);
- // color emoji font with large glyph
- if (fEmojiTypeface) {
- font.setEdging(SkFont::Edging::kAlias);
- font.setSubpixel(false);
- font.setTypeface(fEmojiTypeface);
- font.measureText(fEmojiText, strlen(fEmojiText), SkTextEncoding::kUTF8, &bounds);
- ToolUtils::add_to_text_blob(&builder, fEmojiText, font, xOffset, yOffset);
- }
- // outline font with large glyph
- font.setSize(12);
- text = "aA";
- font.setTypeface(fReallyBigATypeface);
- ToolUtils::add_to_text_blob(&builder, text, font, corruptedAx, corruptedAy);
- fBlob = builder.make();
- }
- SkString onShortName() override {
- return SkString("mixedtextblobs");
- }
- SkISize onISize() override {
- return SkISize::Make(kWidth, kHeight);
- }
- void onDraw(SkCanvas* canvas) override {
- canvas->drawColor(SK_ColorGRAY);
- SkPaint paint;
- // setup work needed to draw text with different clips
- paint.setColor(SK_ColorBLACK);
- canvas->translate(10, 40);
- // compute the bounds of the text and setup some clips
- SkRect bounds = fBlob->bounds();
- const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
- const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
- const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
- const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
- SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
- boundsHalfWidth, boundsHalfHeight);
- SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
- boundsHalfWidth, boundsHalfHeight);
- SkRect interiorClip = bounds;
- interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
- const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip};
- size_t count = sizeof(clipRects) / sizeof(SkRect);
- for (size_t x = 0; x < count; ++x) {
- draw_blob(canvas, fBlob.get(), paint, clipRects[x]);
- if (x == (count >> 1) - 1) {
- canvas->translate(SkScalarFloorToScalar(bounds.width() + SkIntToScalar(25)),
- -(x * SkScalarFloorToScalar(bounds.height() +
- SkIntToScalar(25))));
- } else {
- canvas->translate(0, SkScalarFloorToScalar(bounds.height() + SkIntToScalar(25)));
- }
- }
- }
- private:
- sk_sp<SkTypeface> fEmojiTypeface;
- sk_sp<SkTypeface> fReallyBigATypeface;
- const char* fEmojiText;
- sk_sp<SkTextBlob> fBlob;
- static constexpr int kWidth = 1250;
- static constexpr int kHeight = 700;
- typedef GM INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_GM(return new MixedTextBlobsGM;)
- }
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