ee6a9919a3
SkTypeface::MakeFromName currently takes SkTypeface::Style, which is quite limited. This starts the transition to this function taking SkFontStyle instead. GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1818043002 TBR=reed He said it sounded like a good idea. Review-Url: https://codereview.chromium.org/1818043002
390 lines
13 KiB
C++
390 lines
13 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkBlurMask.h"
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#include "SkBlurMaskFilter.h"
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#include "SkReadBuffer.h"
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#include "SkWriteBuffer.h"
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#include "SkLayerRasterizer.h"
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static void r0(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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p.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(3))));
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rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setMaskFilter(nullptr);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rastBuilder->addLayer(p);
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p.setAlpha(0x11);
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p.setStyle(SkPaint::kFill_Style);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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rastBuilder->addLayer(p);
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}
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static void r1(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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rastBuilder->addLayer(p);
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p.setAlpha(0x40);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*2);
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rastBuilder->addLayer(p);
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}
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static void r2(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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p.setStyle(SkPaint::kStrokeAndFill_Style);
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p.setStrokeWidth(SK_Scalar1*4);
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rastBuilder->addLayer(p);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*3/2);
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rastBuilder->addLayer(p);
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}
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static void r3(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*3);
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rastBuilder->addLayer(p);
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p.setAlpha(0x20);
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p.setStyle(SkPaint::kFill_Style);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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rastBuilder->addLayer(p);
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}
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static void r4(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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p.setAlpha(0x60);
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rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setAlpha(0xFF);
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rastBuilder->addLayer(p, SK_Scalar1*3/2, SK_Scalar1*3/2);
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p.setXfermode(nullptr);
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rastBuilder->addLayer(p);
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}
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#include "SkDiscretePathEffect.h"
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static void r5(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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rastBuilder->addLayer(p);
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p.setPathEffect(SkDiscretePathEffect::Make(SK_Scalar1*4, SK_Scalar1*3));
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p.setXfermodeMode(SkXfermode::kSrcOut_Mode);
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rastBuilder->addLayer(p);
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}
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static void r6(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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rastBuilder->addLayer(p);
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p.setAntiAlias(false);
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SkLayerRasterizer::Builder rastBuilder2;
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r5(&rastBuilder2, p);
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p.setRasterizer(rastBuilder2.detach());
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rastBuilder->addLayer(p);
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}
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#include "Sk2DPathEffect.h"
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static sk_sp<SkPathEffect> MakeDotEffect(SkScalar radius, const SkMatrix& matrix) {
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SkPath path;
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path.addCircle(0, 0, radius);
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return SkPath2DPathEffect::Make(matrix, path);
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}
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static void r7(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
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lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
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p.setPathEffect(MakeDotEffect(SK_Scalar1*4, lattice));
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rastBuilder->addLayer(p);
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}
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static void r8(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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rastBuilder->addLayer(p);
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
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lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
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p.setPathEffect(MakeDotEffect(SK_Scalar1*2, lattice));
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rastBuilder->addLayer(p);
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p.setPathEffect(nullptr);
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p.setXfermode(nullptr);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rastBuilder->addLayer(p);
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}
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static void r9(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p) {
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rastBuilder->addLayer(p);
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1, SK_Scalar1*6, 0, 0);
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lattice.postRotate(SkIntToScalar(30), 0, 0);
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p.setPathEffect(SkLine2DPathEffect::Make(SK_Scalar1*2, lattice));
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rastBuilder->addLayer(p);
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p.setPathEffect(nullptr);
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p.setXfermode(nullptr);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rastBuilder->addLayer(p);
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}
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typedef void (*raster_proc)(SkLayerRasterizer::Builder*, SkPaint&);
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static const raster_proc gRastProcs[] = {
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r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
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};
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#include "SkXfermode.h"
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static void apply_shader(SkPaint* paint, int index) {
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raster_proc proc = gRastProcs[index];
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if (proc) {
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SkPaint p;
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SkLayerRasterizer::Builder rastBuilder;
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p.setAntiAlias(true);
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proc(&rastBuilder, p);
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paint->setRasterizer(rastBuilder.detach());
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}
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#if 0
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SkScalar dir[] = { SK_Scalar1, SK_Scalar1, SK_Scalar1 };
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paint->setMaskFilter(SkBlurMaskFilter::CreateEmboss(dir, SK_Scalar1/4, SkIntToScalar(4), SkIntToScalar(3)))->unref();
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#endif
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paint->setColor(SK_ColorBLUE);
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}
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DEF_SIMPLE_GM(texteffects, canvas, 460, 680) {
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canvas->save();
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setTextSize(SkIntToScalar(56));
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SkScalar x = SkIntToScalar(20);
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SkScalar y = paint.getTextSize();
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SkString str("Hamburgefons");
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for (int i = 0; i < static_cast<int>(SK_ARRAY_COUNT(gRastProcs)); i++) {
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apply_shader(&paint, i);
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// paint.setMaskFilter(nullptr);
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// paint.setColor(SK_ColorBLACK);
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canvas->drawText(str.c_str(), str.size(), x, y, paint);
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y += paint.getFontSpacing();
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}
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canvas->restore();
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}
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DEF_SIMPLE_GM(textunderstrike, canvas, 460, 680) {
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canvas->clear(SK_ColorYELLOW);
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SkPaint paint;
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setTextSize(50);
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paint.setStrokeWidth(5);
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paint.setAntiAlias(true);
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auto drawText = [&]() {
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paint.setStyle(SkPaint::kFill_Style);
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canvas->drawText("Hello", 5, 100, 50, paint);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawText("Hello", 5, 100, 100, paint);
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canvas->translate(0, 100);
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};
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drawText();
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paint.setUnderlineText(true);
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drawText();
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paint.setUnderlineText(false);
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paint.setStrikeThruText(true);
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drawText();
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paint.setUnderlineText(true);
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drawText();
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paint.setColor(SK_ColorWHITE);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawText("Hello", 5, 100, 50, paint);
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paint.setColor(SK_ColorBLUE);
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paint.setStyle(SkPaint::kFill_Style);
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canvas->drawText("Hello", 5, 100, 50, paint);
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}
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static SkPath create_underline(const SkTDArray<SkScalar>& intersections,
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SkScalar last, SkScalar finalPos,
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SkScalar uPos, SkScalar uWidth, SkScalar textSize) {
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SkPath underline;
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SkScalar end = last;
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for (int index = 0; index < intersections.count(); index += 2) {
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SkScalar start = intersections[index] - uWidth;;
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end = intersections[index + 1] + uWidth;
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if (start > last && last + textSize / 12 < start) {
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underline.moveTo(last, uPos);
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underline.lineTo(start, uPos);
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}
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last = end;
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}
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if (end < finalPos) {
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underline.moveTo(end, uPos);
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underline.lineTo(finalPos, uPos);
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}
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return underline;
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}
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static void find_intercepts(const char* test, size_t len, SkScalar x, SkScalar y,
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const SkPaint& paint, SkScalar uWidth, SkTDArray<SkScalar>* intersections) {
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SkScalar uPos = y + uWidth;
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SkScalar bounds[2] = { uPos - uWidth / 2, uPos + uWidth / 2 };
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int count = paint.getTextIntercepts(test, len, x, y, bounds, nullptr);
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SkASSERT(!(count % 2));
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if (count) {
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intersections->setCount(count);
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paint.getTextIntercepts(test, len, x, y, bounds, intersections->begin());
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}
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}
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DEF_SIMPLE_GM(fancyunderline, canvas, 900, 1350) {
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SkPaint paint;
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paint.setAntiAlias(true);
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const char* fam[] = { "sans-serif", "serif", "monospace" };
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const char test[] = "aAjJgGyY_|{-(~[,]qQ}pP}zZ";
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SkPoint textPt = { 10, 80 };
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for (int font = 0; font < 3; ++font) {
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sk_tool_utils::set_portable_typeface(&paint, fam[font]);
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for (SkScalar textSize = 100; textSize > 10; textSize -= 20) {
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paint.setTextSize(textSize);
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const SkScalar uWidth = textSize / 15;
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paint.setStrokeWidth(uWidth);
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paint.setStyle(SkPaint::kFill_Style);
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canvas->drawText(test, sizeof(test) - 1, textPt.fX, textPt.fY, paint);
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SkTDArray<SkScalar> intersections;
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find_intercepts(test, sizeof(test) - 1, textPt.fX, textPt.fY, paint, uWidth,
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&intersections);
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SkScalar start = textPt.fX;
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SkScalar end = paint.measureText(test, sizeof(test) - 1) + textPt.fX;
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SkScalar uPos = textPt.fY + uWidth;
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SkPath underline = create_underline(intersections, start, end, uPos, uWidth, textSize);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawPath(underline, paint);
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canvas->translate(0, textSize * 1.3f);
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}
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canvas->translate(0, 60);
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}
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}
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static void find_intercepts(const char* test, size_t len, const SkPoint* pos, const SkPaint& paint,
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SkScalar uWidth, SkTDArray<SkScalar>* intersections) {
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SkScalar uPos = pos[0].fY + uWidth;
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SkScalar bounds[2] = { uPos - uWidth / 2, uPos + uWidth / 2 };
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int count = paint.getPosTextIntercepts(test, len, pos, bounds, nullptr);
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SkASSERT(!(count % 2));
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if (count) {
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intersections->setCount(count);
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paint.getPosTextIntercepts(test, len, pos, bounds, intersections->begin());
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}
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}
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DEF_SIMPLE_GM(fancyposunderline, canvas, 900, 1350) {
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SkPaint paint;
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paint.setAntiAlias(true);
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const char* fam[] = { "sans-serif", "serif", "monospace" };
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const char test[] = "aAjJgGyY_|{-(~[,]qQ}pP}zZ";
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SkPoint textPt = { 10, 80 };
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for (int font = 0; font < 3; ++font) {
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sk_tool_utils::set_portable_typeface(&paint, fam[font]);
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for (SkScalar textSize = 100; textSize > 10; textSize -= 20) {
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paint.setTextSize(textSize);
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const SkScalar uWidth = textSize / 15;
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paint.setStrokeWidth(uWidth);
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paint.setStyle(SkPaint::kFill_Style);
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int widthCount = paint.getTextWidths(test, sizeof(test) - 1, nullptr);
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SkTDArray<SkScalar> widths;
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widths.setCount(widthCount);
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(void) paint.getTextWidths(test, sizeof(test) - 1, widths.begin());
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SkTDArray<SkPoint> pos;
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pos.setCount(widthCount);
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SkScalar posX = textPt.fX;
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for (int index = 0; index < widthCount; ++index) {
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pos[index].fX = posX;
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posX += widths[index];
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pos[index].fY = textPt.fY + (textSize / 25) * (index % 4);
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}
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canvas->drawPosText(test, sizeof(test) - 1, pos.begin(), paint);
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SkTDArray<SkScalar> intersections;
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find_intercepts(test, sizeof(test) - 1, pos.begin(), paint, uWidth, &intersections);
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SkScalar start = textPt.fX;
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SkScalar end = posX;
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SkScalar uPos = textPt.fY + uWidth;
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SkPath underline = create_underline(intersections, start, end, uPos, uWidth, textSize);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawPath(underline, paint);
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canvas->translate(0, textSize * 1.3f);
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}
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canvas->translate(0, 60);
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}
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}
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DEF_SIMPLE_GM(fancyunderlinebars, canvas, 1500, 460) {
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SkPaint paint;
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paint.setAntiAlias(true);
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const char test[] = " .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_ .}]_";
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SkPoint textPt = { 10, 80 };
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sk_tool_utils::set_portable_typeface(&paint, "serif");
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for (SkScalar textSize = 100; textSize > 10; textSize -= 20) {
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paint.setTextSize(textSize);
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SkScalar uWidth = textSize / 15;
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paint.setStrokeWidth(uWidth);
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paint.setStyle(SkPaint::kFill_Style);
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int widthCount = paint.getTextWidths(test, sizeof(test) - 1, nullptr);
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SkTDArray<SkScalar> widths;
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widths.setCount(widthCount);
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(void) paint.getTextWidths(test, sizeof(test) - 1, widths.begin());
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SkTDArray<SkPoint> pos;
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pos.setCount(widthCount);
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SkScalar posX = textPt.fX;
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pos[0] = textPt;
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posX += widths[0];
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for (int index = 1; index < widthCount; ++index) {
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pos[index].fX = posX;
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posX += widths[index];
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pos[index].fY = textPt.fY - (textSize / 50) * (index / 5) + textSize / 50 * 4;
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}
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canvas->drawPosText(test, sizeof(test) - 1, pos.begin(), paint);
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SkTDArray<SkScalar> intersections;
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find_intercepts(test, sizeof(test) - 1, pos.begin(), paint, uWidth, &intersections);
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SkScalar start = textPt.fX;
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SkScalar end = posX;
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SkScalar uPos = pos[0].fY + uWidth;
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SkPath underline = create_underline(intersections, start, end, uPos, uWidth, textSize);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawPath(underline, paint);
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canvas->translate(0, textSize * 1.3f);
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}
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}
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