2015-05-20 16:21:04 +00:00
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/*
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* Copyright 2015 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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2019-05-01 21:28:53 +00:00
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2019-04-23 17:05:21 +00:00
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#include "gm/gm.h"
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2019-05-01 21:28:53 +00:00
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#include "include/core/SkCanvas.h"
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2019-04-23 17:05:21 +00:00
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#include "include/core/SkFont.h"
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2019-05-01 21:28:53 +00:00
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#include "include/core/SkFontArguments.h"
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2019-04-23 17:05:21 +00:00
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#include "include/core/SkFontMgr.h"
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2019-05-01 21:28:53 +00:00
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#include "include/core/SkFontTypes.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkStream.h"
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#include "include/core/SkString.h"
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2019-04-23 17:05:21 +00:00
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#include "include/core/SkTypeface.h"
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2019-05-01 21:28:53 +00:00
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#include "include/core/SkTypes.h"
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2019-04-23 17:05:21 +00:00
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#include "tools/Resources.h"
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2022-05-18 20:02:42 +00:00
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#include "tools/SkMetaData.h"
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2015-05-20 16:21:04 +00:00
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2019-05-01 21:28:53 +00:00
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#include <string.h>
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#include <memory>
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#include <utility>
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2015-05-20 16:21:04 +00:00
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namespace skiagm {
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class FontScalerDistortableGM : public GM {
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public:
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FontScalerDistortableGM() {
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this->setBGColor(0xFFFFFFFF);
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}
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2019-08-08 22:33:05 +00:00
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private:
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2015-05-20 16:21:04 +00:00
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SkString onShortName() override {
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return SkString("fontscalerdistortable");
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}
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SkISize onISize() override {
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return SkISize::Make(550, 700);
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}
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2022-05-18 20:02:42 +00:00
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bool fDirty = true;
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bool fOverride = false;
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size_t fAxisSliderCount = 0;
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struct AxisSlider {
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SkFourByteTag axis;
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SkScalar control[3];
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SkString name;
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};
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std::unique_ptr<AxisSlider[]> fAxisSliders;
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bool onGetControls(SkMetaData* controls) override {
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controls->setBool("Override", fOverride);
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for (size_t i = 0; i < fAxisSliderCount; ++i) {
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controls->setScalars(fAxisSliders[i].name.c_str(), 3, fAxisSliders[i].control);
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}
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return true;
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}
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2020-01-17 20:55:14 +00:00
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2022-05-18 20:02:42 +00:00
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void onSetControls(const SkMetaData& controls) override {
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bool oldOverride = fOverride;
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controls.findBool("Override", &fOverride);
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if (fOverride != oldOverride) {
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fDirty = true;
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}
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for (size_t i = 0; i < fAxisSliderCount; ++i) {
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SkScalar oldValue = fAxisSliders[i].control[0];
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controls.findScalars(fAxisSliders[i].name.c_str(), nullptr, fAxisSliders[i].control);
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if (oldValue != fAxisSliders[i].control[0]) {
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fDirty = true;
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}
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}
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}
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struct Info {
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sk_sp<SkTypeface> distortable;
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SkFourByteTag axisTag;
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SkScalar axisMin;
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SkScalar axisMax;
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} fInfo;
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void onOnceBeforeDraw() override {
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2020-01-17 20:55:14 +00:00
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constexpr SkFourByteTag wght = SkSetFourByteTag('w','g','h','t');
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//constexpr SkFourByteTag wdth = SkSetFourByteTag('w','d','t','h');
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fInfo = {
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MakeResourceAsTypeface("fonts/Distortable.ttf"), wght, 0.5f, 2.0f
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//SkTypeface::MakeFromFile("/Library/Fonts/Skia.ttf"), wght, 0.48f, 3.2f
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//SkTypeface::MakeFromName("Skia", SkFontStyle()), wdth, 0.62f, 1.3f
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//SkTypeface::MakeFromFile("/System/Library/Fonts/SFNS.ttf"), wght, 100.0f, 900.0f
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//SkTypeface::MakeFromName(".SF NS", SkFontStyle()), wght, 100.0f, 900.0f
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};
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2022-05-18 20:02:42 +00:00
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if (fInfo.distortable) {
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int axisCount = fInfo.distortable->getVariationDesignParameters(nullptr, 0);
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if (axisCount > 0) {
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auto axes = std::make_unique<SkFontParameters::Variation::Axis[]>(axisCount);
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axisCount = fInfo.distortable->getVariationDesignParameters(axes.get(), axisCount);
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if (axisCount > 0) {
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fAxisSliders = std::make_unique<AxisSlider[]>(axisCount);
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for (int i = 0; i < axisCount; ++i) {
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fAxisSliders[i].axis = axes[i].tag;
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fAxisSliders[i].control[0] = axes[i].def;
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fAxisSliders[i].control[1] = axes[i].min;
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fAxisSliders[i].control[2] = axes[i].max;
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fAxisSliders[i].name.append((const char *)&axes[i].tag, 4);
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fAxisSliders[i].name.appendS32(i);
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}
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fAxisSliderCount = axisCount;
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}
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}
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}
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}
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inline static constexpr int rows = 2;
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inline static constexpr int cols = 5;
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sk_sp<SkTypeface> typeface[rows][cols];
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void updateTypefaces() {
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sk_sp<SkFontMgr> fontMgr(SkFontMgr::RefDefault());
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std::unique_ptr<SkStreamAsset> distortableStream( fInfo.distortable
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? fInfo.distortable->openStream(nullptr)
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: nullptr);
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for (int row = 0; row < rows; ++row) {
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for (int col = 0; col < cols; ++col) {
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2022-05-18 20:02:42 +00:00
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using Coordinate = SkFontArguments::VariationPosition::Coordinate;
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int coordinateCount;
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std::unique_ptr<Coordinate[]> coordinates;
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if (fOverride) {
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coordinateCount = fAxisSliderCount;
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coordinates = std::make_unique<Coordinate[]>(coordinateCount);
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for (size_t i = 0; i < fAxisSliderCount; ++i) {
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coordinates[i].axis = fAxisSliders[i].axis;
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coordinates[i].value = fAxisSliders[i].control[0];
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}
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} else {
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coordinateCount = 2;
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coordinates = std::make_unique<Coordinate[]>(coordinateCount);
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SkScalar styleValue = SkScalarInterp(fInfo.axisMin, fInfo.axisMax,
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SkScalar(row*cols + col) / (rows*cols));
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coordinates[0] = {fInfo.axisTag, styleValue};
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coordinates[1] = {fInfo.axisTag, styleValue};
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}
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SkFontArguments::VariationPosition position = {coordinates.get(), coordinateCount};
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2020-01-17 20:55:14 +00:00
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typeface[row][col] = [&]() -> sk_sp<SkTypeface> {
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2022-05-18 20:02:42 +00:00
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if (row == 0 && fInfo.distortable) {
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return fInfo.distortable->makeClone(
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SkFontArguments().setVariationDesignPosition(position));
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}
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if (distortableStream) {
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return fontMgr->makeFromStream(distortableStream->duplicate(),
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SkFontArguments().setVariationDesignPosition(position));
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}
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return nullptr;
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}();
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}
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}
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2022-05-18 20:02:42 +00:00
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fDirty = false;
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2020-01-17 20:55:14 +00:00
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}
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2019-02-07 23:20:09 +00:00
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DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
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2022-05-18 20:02:42 +00:00
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if (fDirty) {
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this->updateTypefaces();
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}
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2015-05-20 16:21:04 +00:00
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SkPaint paint;
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paint.setAntiAlias(true);
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2018-12-15 18:45:33 +00:00
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SkFont font;
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font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
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2015-05-20 16:21:04 +00:00
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const char* text = "abc";
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const size_t textLen = strlen(text);
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2019-08-08 22:33:05 +00:00
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for (int row = 0; row < rows; ++row) {
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for (int col = 0; col < cols; ++col) {
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2015-05-20 16:21:04 +00:00
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SkScalar x = SkIntToScalar(10);
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SkScalar y = SkIntToScalar(20);
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2020-01-17 20:55:14 +00:00
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font.setTypeface(typeface[row][col] ? typeface[row][col] : nullptr);
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2015-05-20 16:21:04 +00:00
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SkAutoCanvasRestore acr(canvas, true);
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2019-08-08 22:33:05 +00:00
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canvas->translate(SkIntToScalar(30 + col * 100), SkIntToScalar(20));
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canvas->rotate(SkIntToScalar(col * 5), x, y * 10);
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2015-05-20 16:21:04 +00:00
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{
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SkPaint p;
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p.setAntiAlias(true);
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SkRect r;
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2019-08-24 23:39:13 +00:00
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r.setLTRB(x - 3, 15, x - 1, 280);
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2015-05-20 16:21:04 +00:00
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canvas->drawRect(r, p);
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}
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for (int ps = 6; ps <= 22; ps++) {
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2018-12-15 18:45:33 +00:00
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font.setSize(SkIntToScalar(ps));
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2019-05-07 19:38:46 +00:00
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canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, x, y, font, paint);
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2018-12-15 18:45:33 +00:00
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y += font.getMetrics(nullptr);
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2015-05-20 16:21:04 +00:00
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}
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}
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canvas->translate(0, SkIntToScalar(360));
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2018-12-15 18:45:33 +00:00
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font.setSubpixel(true);
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2019-04-18 20:37:45 +00:00
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font.setLinearMetrics(true);
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2019-08-27 20:20:39 +00:00
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font.setBaselineSnap(false);
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2015-05-20 16:21:04 +00:00
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}
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2019-02-07 23:20:09 +00:00
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return DrawResult::kOk;
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2015-05-20 16:21:04 +00:00
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}
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};
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//////////////////////////////////////////////////////////////////////////////
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2019-01-23 15:22:01 +00:00
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DEF_GM( return new FontScalerDistortableGM; )
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2015-05-20 16:21:04 +00:00
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2020-08-06 18:11:56 +00:00
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} // namespace skiagm
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