| /* |
| * Copyright 2012 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/SkPaint.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRRect.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "tools/ToolUtils.h" |
| |
| typedef void (*InsetProc)(const SkRRect&, SkScalar dx, SkScalar dy, SkRRect*); |
| |
| static void inset0(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) { |
| SkRect r = src.rect(); |
| |
| r.inset(dx, dy); |
| if (r.isEmpty()) { |
| dst->setEmpty(); |
| return; |
| } |
| |
| SkVector radii[4]; |
| for (int i = 0; i < 4; ++i) { |
| radii[i] = src.radii((SkRRect::Corner)i); |
| } |
| for (int i = 0; i < 4; ++i) { |
| radii[i].fX -= dx; |
| radii[i].fY -= dy; |
| } |
| dst->setRectRadii(r, radii); |
| } |
| |
| static void inset1(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) { |
| SkRect r = src.rect(); |
| |
| r.inset(dx, dy); |
| if (r.isEmpty()) { |
| dst->setEmpty(); |
| return; |
| } |
| |
| SkVector radii[4]; |
| for (int i = 0; i < 4; ++i) { |
| radii[i] = src.radii((SkRRect::Corner)i); |
| } |
| dst->setRectRadii(r, radii); |
| } |
| |
| static void inset2(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) { |
| SkRect r = src.rect(); |
| |
| r.inset(dx, dy); |
| if (r.isEmpty()) { |
| dst->setEmpty(); |
| return; |
| } |
| |
| SkVector radii[4]; |
| for (int i = 0; i < 4; ++i) { |
| radii[i] = src.radii((SkRRect::Corner)i); |
| } |
| for (int i = 0; i < 4; ++i) { |
| if (radii[i].fX) { |
| radii[i].fX -= dx; |
| } |
| if (radii[i].fY) { |
| radii[i].fY -= dy; |
| } |
| } |
| dst->setRectRadii(r, radii); |
| } |
| |
| static SkScalar prop(SkScalar radius, SkScalar newSize, SkScalar oldSize) { |
| return newSize * radius / oldSize; |
| } |
| |
| static void inset3(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) { |
| SkRect r = src.rect(); |
| |
| r.inset(dx, dy); |
| if (r.isEmpty()) { |
| dst->setEmpty(); |
| return; |
| } |
| |
| SkVector radii[4]; |
| for (int i = 0; i < 4; ++i) { |
| radii[i] = src.radii((SkRRect::Corner)i); |
| } |
| for (int i = 0; i < 4; ++i) { |
| radii[i].fX = prop(radii[i].fX, r.width(), src.rect().width()); |
| radii[i].fY = prop(radii[i].fY, r.height(), src.rect().height()); |
| } |
| dst->setRectRadii(r, radii); |
| } |
| |
| static void draw_rrect_color(SkCanvas* canvas, const SkRRect& rrect) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| if (rrect.isRect()) { |
| paint.setColor(SK_ColorRED); |
| } else if (rrect.isOval()) { |
| paint.setColor(ToolUtils::color_to_565(0xFF008800)); |
| } else if (rrect.isSimple()) { |
| paint.setColor(SK_ColorBLUE); |
| } else { |
| paint.setColor(SK_ColorBLACK); |
| } |
| canvas->drawRRect(rrect, paint); |
| } |
| |
| static void drawrr(SkCanvas* canvas, const SkRRect& rrect, InsetProc proc) { |
| SkRRect rr; |
| for (SkScalar d = -30; d <= 30; d += 5) { |
| proc(rrect, d, d, &rr); |
| draw_rrect_color(canvas, rr); |
| } |
| } |
| |
| class RRectGM : public skiagm::GM { |
| public: |
| RRectGM() {} |
| |
| protected: |
| SkString getName() const override { return SkString("rrect"); } |
| |
| SkISize getISize() override { return SkISize::Make(820, 710); } |
| |
| void onDraw(SkCanvas* canvas) override { |
| constexpr InsetProc insetProcs[] = { |
| inset0, inset1, inset2, inset3 |
| }; |
| |
| SkRRect rrect[4]; |
| SkRect r = { 0, 0, 120, 100 }; |
| SkVector radii[4] = { |
| { 0, 0 }, { 30, 1 }, { 10, 40 }, { 40, 40 } |
| }; |
| |
| rrect[0].setRect(r); |
| rrect[1].setOval(r); |
| rrect[2].setRectXY(r, 20, 20); |
| rrect[3].setRectRadii(r, radii); |
| |
| canvas->translate(50.5f, 50.5f); |
| for (size_t j = 0; j < std::size(insetProcs); ++j) { |
| canvas->save(); |
| for (size_t i = 0; i < std::size(rrect); ++i) { |
| drawrr(canvas, rrect[i], insetProcs[j]); |
| canvas->translate(200, 0); |
| } |
| canvas->restore(); |
| canvas->translate(0, 170); |
| } |
| } |
| |
| private: |
| using INHERITED = GM; |
| }; |
| |
| DEF_GM( return new RRectGM; ) |