зеркало из https://github.com/mozilla/moz-skia.git
182 строки
6.9 KiB
C++
182 строки
6.9 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 "gm.h"
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#include "SkCanvas.h"
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#include "SkPaint.h"
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#include "SkRandom.h"
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namespace skiagm {
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class LinePathsGM : public GM {
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public:
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LinePathsGM() {}
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protected:
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SkString onShortName() {
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return SkString("linepaths");
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}
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SkISize onISize() { return make_isize(1800, 1110); }
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void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
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const SkRect& clip,SkPaint::Cap cap,
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SkPaint::Style style, SkPath::FillType fill,
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SkScalar strokeWidth) {
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path.setFillType(fill);
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SkPaint paint;
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paint.setStrokeCap(cap);
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paint.setStrokeWidth(strokeWidth);
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paint.setColor(color);
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paint.setStyle(style);
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canvas->save();
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canvas->clipRect(clip);
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canvas->drawPath(path, paint);
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canvas->restore();
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}
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virtual void onDraw(SkCanvas* canvas) {
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struct FillAndName {
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SkPath::FillType fFill;
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const char* fName;
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};
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static const FillAndName gFills[] = {
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{SkPath::kWinding_FillType, "Winding"},
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{SkPath::kEvenOdd_FillType, "Even / Odd"},
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{SkPath::kInverseWinding_FillType, "Inverse Winding"},
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{SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
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};
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struct StyleAndName {
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SkPaint::Style fStyle;
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const char* fName;
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};
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static const StyleAndName gStyles[] = {
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{SkPaint::kFill_Style, "Fill"},
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{SkPaint::kStroke_Style, "Stroke"},
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{SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
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};
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struct CapAndName {
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SkPaint::Cap fCap;
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const char* fName;
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};
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static const CapAndName gCaps[] = {
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{SkPaint::kButt_Cap, "Butt"},
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{SkPaint::kRound_Cap, "Round"},
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{SkPaint::kSquare_Cap, "Square"},
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};
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struct PathAndName {
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SkPath fPath;
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const char* fName;
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};
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PathAndName gPaths[4];
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gPaths[0].fPath.moveTo(50*SK_Scalar1, 15*SK_Scalar1);
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gPaths[0].fPath.lineTo(50*SK_Scalar1, 15*SK_Scalar1);
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gPaths[0].fName = "moveTo-zeroline";
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gPaths[1].fPath.moveTo(50*SK_Scalar1, 15*SK_Scalar1);
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gPaths[1].fPath.lineTo(50*SK_Scalar1, 15*SK_Scalar1);
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gPaths[1].fPath.close();
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gPaths[1].fName = "moveTo-zeroline-close";
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gPaths[2].fPath.moveTo(30*SK_Scalar1, 15*SK_Scalar1);
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gPaths[2].fPath.lineTo(70*SK_Scalar1, 15*SK_Scalar1);
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gPaths[2].fName = "moveTo-line";
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gPaths[3].fPath.moveTo(30*SK_Scalar1, 15*SK_Scalar1);
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gPaths[3].fPath.lineTo(70*SK_Scalar1, 15*SK_Scalar1);
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gPaths[3].fPath.close();
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gPaths[3].fName = "moveTo-line-close";
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SkPaint titlePaint;
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titlePaint.setColor(SK_ColorBLACK);
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titlePaint.setAntiAlias(true);
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titlePaint.setLCDRenderText(true);
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titlePaint.setTextSize(15 * SK_Scalar1);
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const char title[] = "Line Paths Drawn Into Rectangle Clips With "
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"Indicated Style, Fill and Linecaps, "
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"with random stroke widths";
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canvas->drawText(title, strlen(title),
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20 * SK_Scalar1,
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20 * SK_Scalar1,
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titlePaint);
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SkRandom rand;
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SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
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canvas->save();
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canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
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canvas->save();
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for (size_t path = 0; path < SK_ARRAY_COUNT(gPaths); ++path) {
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if (0 < path) {
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canvas->translate(0, (rect.height() + 60 * SK_Scalar1) * 3);
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}
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canvas->save();
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for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
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if (0 < cap) {
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canvas->translate((rect.width() + 40 * SK_Scalar1) * 4, 0);
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}
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canvas->save();
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for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
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if (0 < style) {
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canvas->translate(0, rect.height() + 60 * SK_Scalar1);
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}
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canvas->save();
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for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
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if (0 < fill) {
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canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
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}
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SkColor color = 0xff007000;
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this->drawPath(gPaths[path].fPath, canvas, color, rect,
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gCaps[cap].fCap, gStyles[style].fStyle,
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gFills[fill].fFill, SK_Scalar1*10);
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SkPaint rectPaint;
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rectPaint.setColor(SK_ColorBLACK);
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rectPaint.setStyle(SkPaint::kStroke_Style);
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rectPaint.setStrokeWidth(-1);
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rectPaint.setAntiAlias(true);
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canvas->drawRect(rect, rectPaint);
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SkPaint labelPaint;
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labelPaint.setColor(color);
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labelPaint.setAntiAlias(true);
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labelPaint.setLCDRenderText(true);
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labelPaint.setTextSize(10 * SK_Scalar1);
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canvas->drawText(gStyles[style].fName,
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strlen(gStyles[style].fName),
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0, rect.height() + 12 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gFills[fill].fName,
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strlen(gFills[fill].fName),
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0, rect.height() + 24 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gCaps[cap].fName,
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strlen(gCaps[cap].fName),
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0, rect.height() + 36 * SK_Scalar1,
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labelPaint);
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canvas->drawText(gPaths[path].fName,
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strlen(gPaths[path].fName),
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0, rect.height() + 48 * SK_Scalar1,
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labelPaint);
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}
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canvas->restore();
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}
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canvas->restore();
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}
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canvas->restore();
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}
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canvas->restore();
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canvas->restore();
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new LinePathsGM; }
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static GMRegistry reg(MyFactory);
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}
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