fab44db294
This change removes sk_stdint.h since it is only needed for vs2008 and earlier. This change removes SK_MMAP_SUPPORT define since it is no longer used. This change removes the stdio.h include from SkTypes.h since on many systems this is a very large header, few Skia files actually use it, it is available everywhere standard, and SkDebugf should be used instead. After this change there is no need for external users to put Skia's include/config into their own list of includes, saving the headache of having two header files of the same name and sometimes getting the wrong one depending on include order. R=bsalomon@google.com, djsollen@google.com Review URL: https://codereview.chromium.org/27044002 git-svn-id: http://skia.googlecode.com/svn/trunk@11738 2bbb7eff-a529-9590-31e7-b0007b416f81
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
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/*
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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 "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "Sk64.h"
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#include "SkGradientShader.h"
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#include "SkString.h"
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static void draw_gradient2(SkCanvas* canvas, const SkRect& rect, SkScalar delta) {
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SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorMAGENTA };
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SkScalar pos[] = { 0, SkFloatToScalar(0.25f), SkFloatToScalar(0.75f), SK_Scalar1 };
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SkScalar l = rect.fLeft;
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SkScalar t = rect.fTop;
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SkScalar w = rect.width();
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SkScalar h = rect.height();
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SkASSERT(0 == SkScalarMod(w, SK_Scalar1 * 5));
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SkPoint c0 = { l + 2 * w / 5 + delta, t + h / 2 };
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SkPoint c1 = { l + 3 * w / 5, t + h / 2 };
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SkScalar r0 = w / 5;
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SkScalar r1 = 2 * w / 5;
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SkShader* s = SkGradientShader::CreateTwoPointConical(c0, r0, c1, r1, colors,
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pos, SK_ARRAY_COUNT(pos),
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SkShader::kClamp_TileMode);
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SkPaint paint;
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paint.setShader(s)->unref();
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canvas->drawRect(rect, paint);
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}
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class DegenerateTwoPtRadialsView : public SampleView {
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public:
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DegenerateTwoPtRadialsView() {
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fTime = 0;
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this->setBGColor(0xFFDDDDDD);
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "DegenerateTwoPtRadials");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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fTime += SampleCode::GetAnimSecondsDelta();
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SkScalar delta = fTime / 15.f;
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int intPart = SkScalarFloor(delta);
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delta = delta - SK_Scalar1 * intPart;
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if (intPart % 2) {
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delta = SK_Scalar1 - delta;
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}
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delta -= SK_ScalarHalf;
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static const int DELTA_SCALE = 500;
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delta /= DELTA_SCALE;
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SkScalar w = SK_Scalar1 * 500;
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SkScalar h = SK_Scalar1 * 500;
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SkScalar l = SK_Scalar1 * 100;
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SkScalar t = SK_Scalar1 * 100;
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draw_gradient2(canvas, SkRect::MakeXYWH(l, t, w, h), delta);
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SkString txt;
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txt.appendf("gap at \"tangent\" pt = %f", SkScalarToFloat(delta));
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorBLACK);
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canvas->drawText(txt.c_str(), txt.size(), l + w/2 + w*DELTA_SCALE*delta, t + h + SK_Scalar1 * 10, paint);
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this->inval(NULL);
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}
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private:
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SkScalar fTime;
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new DegenerateTwoPtRadialsView; }
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static SkViewRegister reg(MyFactory);
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