From a343c844ecefd743d23f7fba1683db14cfb3540f Mon Sep 17 00:00:00 2001 From: "commit-bot@chromium.org" Date: Fri, 31 Jan 2014 14:48:58 +0000 Subject: [PATCH] Add GM with convex polygon clips BUG=skia:2051 R=reed@google.com Author: bsalomon@google.com Review URL: https://codereview.chromium.org/136563004 git-svn-id: http://skia.googlecode.com/svn/trunk@13262 2bbb7eff-a529-9590-31e7-b0007b416f81 --- gm/convexpolyclip.cpp | 194 ++++++++++++++++++++++++++++++++++++++++++ gyp/gmslides.gypi | 1 + 2 files changed, 195 insertions(+) create mode 100644 gm/convexpolyclip.cpp diff --git a/gm/convexpolyclip.cpp b/gm/convexpolyclip.cpp new file mode 100644 index 0000000000..db357bbfd7 --- /dev/null +++ b/gm/convexpolyclip.cpp @@ -0,0 +1,194 @@ + +/* + * Copyright 2014 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" + +#include "SkBitmap.h" +#include "SkGradientShader.h" +#include "SkTLList.h" + +static SkBitmap make_bmp(int w, int h) { + SkBitmap bmp; + bmp.allocN32Pixels(w, h, true); + + SkCanvas canvas(bmp); + SkScalar wScalar = SkIntToScalar(w); + SkScalar hScalar = SkIntToScalar(h); + + SkPoint pt = { wScalar / 2, hScalar / 2 }; + + SkScalar radius = 3 * SkMaxScalar(wScalar, hScalar); + + SkColor colors[] = { SK_ColorDKGRAY, 0xFF222255, + 0xFF331133, 0xFF884422, + 0xFF000022, SK_ColorWHITE, + 0xFFAABBCC}; + + SkScalar pos[] = {0, + SK_Scalar1 / 6, + 2 * SK_Scalar1 / 6, + 3 * SK_Scalar1 / 6, + 4 * SK_Scalar1 / 6, + 5 * SK_Scalar1 / 6, + SK_Scalar1}; + + SkPaint paint; + paint.setShader(SkGradientShader::CreateRadial( + pt, radius, + colors, pos, + SK_ARRAY_COUNT(colors), + SkShader::kRepeat_TileMode))->unref(); + SkRect rect = SkRect::MakeWH(wScalar, hScalar); + SkMatrix mat = SkMatrix::I(); + for (int i = 0; i < 4; ++i) { + paint.getShader()->setLocalMatrix(mat); + canvas.drawRect(rect, paint); + rect.inset(wScalar / 8, hScalar / 8); + mat.preTranslate(6 * wScalar, 6 * hScalar); + mat.postScale(SK_Scalar1 / 3, SK_Scalar1 / 3); + } + + paint.setAntiAlias(true); + paint.setTextSize(wScalar / 2.2f); + paint.setShader(0); + paint.setColor(SK_ColorLTGRAY); + static const char kTxt[] = "Skia"; + SkPoint texPos = { wScalar / 17, hScalar / 2 + paint.getTextSize() / 2.5f }; + canvas.drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, texPos.fX, texPos.fY, paint); + paint.setColor(SK_ColorBLACK); + paint.setStyle(SkPaint::kStroke_Style); + paint.setStrokeWidth(SK_Scalar1); + canvas.drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, texPos.fX, texPos.fY, paint); + return bmp; +} + +namespace skiagm { +/** + * This GM tests convex polygon clips. + */ +class ConvexPolyClip : public GM { +public: + ConvexPolyClip() { + this->setBGColor(0xFFFFFFFF); + } + +protected: + virtual SkString onShortName() SK_OVERRIDE { + return SkString("convex_poly_clip"); + } + + virtual SkISize onISize() SK_OVERRIDE { + return make_isize(435, 440); + } + + virtual void onOnceBeforeDraw() SK_OVERRIDE { + SkPath tri; + tri.moveTo(5.f, 5.f); + tri.lineTo(100.f, 20.f); + tri.lineTo(15.f, 100.f); + + fPaths.addToTail(tri); + + SkPath hexagon; + static const SkScalar kRadius = 45.f; + const SkPoint center = { kRadius, kRadius }; + for (int i = 0; i < 6; ++i) { + SkScalar angle = 2 * SK_ScalarPI * i / 6; + SkPoint point; + point.fY = SkScalarSinCos(angle, &point.fX); + point.scale(kRadius); + point = center + point; + if (0 == i) { + hexagon.moveTo(point); + } else { + hexagon.lineTo(point); + } + } + fPaths.addToTail(hexagon); + + SkMatrix scaleM; + scaleM.setScale(1.1f, 0.4f, kRadius, kRadius); + hexagon.transform(scaleM); + fPaths.addToTail(hexagon); + + SkPath rotRect; + SkRect rect = SkRect::MakeLTRB(10.f, 12.f, 80.f, 86.f); + rotRect.addRect(rect); + SkMatrix rotM; + rotM.setRotate(23.f, rect.centerX(), rect.centerY()); + rotRect.transform(rotM); + fPaths.addToTail(rotRect); + + fBmp = make_bmp(100, 100); + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + const SkPath* path; + SkScalar y = 0; + static const SkScalar kMargin = 10.f; + + SkPaint bgPaint; + bgPaint.setAlpha(0x15); + SkISize size = canvas->getDeviceSize(); + SkRect dstRect = SkRect::MakeWH(SkIntToScalar(size.fWidth), + SkIntToScalar(size.fHeight)); + canvas->drawBitmapRectToRect(fBmp, NULL, dstRect, &bgPaint); + + for (SkTLList::Iter iter(fPaths, SkTLList::Iter::kHead_IterStart); + NULL != (path = iter.get()); + iter.next()) { + SkScalar x = 0; + for (int aa = 0; aa < 2; ++aa) { + canvas->save(); + canvas->translate(x, y); + canvas->clipPath(*path, SkRegion::kIntersect_Op, SkToBool(aa)); + canvas->drawBitmap(fBmp, 0, 0); + canvas->restore(); + x += fBmp.width() + kMargin; + } + for (int aa = 0; aa < 2; ++aa) { + static const char kTxt[] = "Clip Me!"; + SkPaint txtPaint; + txtPaint.setTextSize(23.f); + txtPaint.setAntiAlias(true); + txtPaint.setColor(SK_ColorDKGRAY); + + SkPaint clipOutlinePaint; + clipOutlinePaint.setAntiAlias(true); + clipOutlinePaint.setColor(0x50505050); + clipOutlinePaint.setStyle(SkPaint::kStroke_Style); + clipOutlinePaint.setStrokeWidth(0); + + canvas->save(); + canvas->translate(x, y); + SkPath closedClipPath = *path; + closedClipPath.close(); + canvas->drawPath(closedClipPath, clipOutlinePaint); + canvas->clipPath(*path, SkRegion::kIntersect_Op, SkToBool(aa)); + canvas->scale(1.f, 1.8f); + canvas->drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, + 0, 1.5f * txtPaint.getTextSize(), + txtPaint); + canvas->restore(); + x += fBmp.width() + kMargin; + } + + y += fBmp.height() + kMargin; + } + } + +private: + SkTLList fPaths; + SkBitmap fBmp; + + typedef GM INHERITED; +}; + +DEF_GM( return SkNEW(ConvexPolyClip); ) + +} diff --git a/gyp/gmslides.gypi b/gyp/gmslides.gypi index 4f75e77231..2ba0140b28 100644 --- a/gyp/gmslides.gypi +++ b/gyp/gmslides.gypi @@ -39,6 +39,7 @@ '../gm/composeshader.cpp', #'../gm/conicpaths.cpp', '../gm/convexpaths.cpp', + '../gm/convexpolyclip.cpp', '../gm/convexpolyeffect.cpp', '../gm/copyTo4444.cpp', '../gm/cubicpaths.cpp',