7fde8e1728
This almost gets gms to be iwyu clean. The last bit is around gm.cpp and the tracing framework and its use of atomic. Will also need a way of keeping things from regressing, which is difficult due to needing to do this outside-in. Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593 Reviewed-by: Herb Derby <herb@google.com> Commit-Queue: Ben Wagner <bungeman@google.com>
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/*
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* Copyright 2018 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypes.h"
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#include "src/core/SkGeometry.h"
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static constexpr float kStrokeWidth = 40;
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static constexpr int kCellSize = 200;
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static const SkPoint kCubics[][4] = {
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{{122, 737}, {348, 553}, {403, 761}, {400, 760}},
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{{244, 520}, {244, 518}, {1141, 634}, {394, 688}},
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{{550, 194}, {138, 130}, {1035, 246}, {288, 300}},
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{{226, 733}, {556, 779}, {-43, 471}, {348, 683}},
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{{268, 204}, {492, 304}, {352, 23}, {433, 412}},
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{{172, 480}, {396, 580}, {256, 299}, {338, 677}},
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{{731, 340}, {318, 252}, {1026, -64}, {367, 265}},
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{{475, 708}, {62, 620}, {770, 304}, {220, 659}},
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};
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static SkRect calc_tight_cubic_bounds(const SkPoint P[4], int depth=5) {
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if (0 == depth) {
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SkRect bounds;
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bounds.fLeft = SkTMin(SkTMin(P[0].x(), P[1].x()), SkTMin(P[2].x(), P[3].x()));
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bounds.fTop = SkTMin(SkTMin(P[0].y(), P[1].y()), SkTMin(P[2].y(), P[3].y()));
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bounds.fRight = SkTMax(SkTMax(P[0].x(), P[1].x()), SkTMax(P[2].x(), P[3].x()));
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bounds.fBottom = SkTMax(SkTMax(P[0].y(), P[1].y()), SkTMax(P[2].y(), P[3].y()));
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return bounds;
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}
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SkPoint chopped[7];
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SkChopCubicAt(P, chopped, .5f);
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SkRect bounds = calc_tight_cubic_bounds(chopped, depth - 1);
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bounds.join(calc_tight_cubic_bounds(chopped+3, depth - 1));
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return bounds;
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}
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// This is a compilation of cubics that have given strokers grief. Feel free to add more.
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class TrickyCubicStrokesGM : public skiagm::GM {
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public:
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TrickyCubicStrokesGM() {}
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protected:
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SkString onShortName() override {
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return SkString("trickycubicstrokes");
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}
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SkISize onISize() override {
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return SkISize::Make(3*kCellSize, 3*kCellSize);
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}
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void onOnceBeforeDraw() override {
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fStrokePaint.setAntiAlias(true);
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fStrokePaint.setStrokeWidth(kStrokeWidth);
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fStrokePaint.setColor(SK_ColorGREEN);
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fStrokePaint.setStyle(SkPaint::kStroke_Style);
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}
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void onDraw(SkCanvas* canvas) override {
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canvas->clear(SK_ColorBLACK);
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for (size_t i = 0; i < SK_ARRAY_COUNT(kCubics); ++i) {
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this->drawStroke(canvas, kCubics[i],
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SkRect::MakeXYWH((i%3) * kCellSize, (i/3) * kCellSize, kCellSize,
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kCellSize));
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}
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}
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void drawStroke(SkCanvas* canvas, const SkPoint P[4], const SkRect& location) {
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SkRect strokeBounds = calc_tight_cubic_bounds(P);
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strokeBounds.outset(kStrokeWidth, kStrokeWidth);
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SkMatrix matrix;
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matrix.setRectToRect(strokeBounds, location, SkMatrix::kCenter_ScaleToFit);
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SkPath path;
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path.moveTo(P[0]);
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path.cubicTo(P[1], P[2], P[3]);
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SkAutoCanvasRestore acr(canvas, true);
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canvas->concat(matrix);
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canvas->drawPath(path, fStrokePaint);
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}
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private:
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SkPaint fStrokePaint;
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typedef GM INHERITED;
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};
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DEF_GM( return new TrickyCubicStrokesGM; )
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