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- /*
- * Copyright 2011 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/SkFont.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPath.h"
- #include "include/core/SkPoint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkTypeface.h"
- #include "include/core/SkTypes.h"
- #include "include/utils/SkRandom.h"
- #include "tools/ToolUtils.h"
- namespace skiagm {
- class EmptyPathGM : public GM {
- SkString onShortName() override { return SkString("emptypath"); }
- SkISize onISize() override { return {600, 280}; }
- void drawEmpty(SkCanvas* canvas,
- SkColor color,
- const SkRect& clip,
- SkPaint::Style style,
- SkPath::FillType fill) {
- SkPath path;
- path.setFillType(fill);
- SkPaint paint;
- paint.setColor(color);
- paint.setStyle(style);
- canvas->save();
- canvas->clipRect(clip);
- canvas->drawPath(path, paint);
- canvas->restore();
- }
- void onDraw(SkCanvas* canvas) override {
- struct FillAndName {
- SkPath::FillType fFill;
- const char* fName;
- };
- constexpr FillAndName gFills[] = {
- {SkPath::kWinding_FillType, "Winding"},
- {SkPath::kEvenOdd_FillType, "Even / Odd"},
- {SkPath::kInverseWinding_FillType, "Inverse Winding"},
- {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
- };
- struct StyleAndName {
- SkPaint::Style fStyle;
- const char* fName;
- };
- constexpr StyleAndName gStyles[] = {
- {SkPaint::kFill_Style, "Fill"},
- {SkPaint::kStroke_Style, "Stroke"},
- {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
- };
- SkFont font(ToolUtils::create_portable_typeface(), 15);
- const char title[] = "Empty Paths Drawn Into Rectangle Clips With "
- "Indicated Style and Fill";
- canvas->drawString(title, 20.0f, 20.0f, font, SkPaint());
- SkRandom rand;
- SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
- int i = 0;
- canvas->save();
- canvas->translate(10 * SK_Scalar1, 0);
- canvas->save();
- for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
- for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
- if (0 == i % 4) {
- canvas->restore();
- canvas->translate(0, rect.height() + 40 * SK_Scalar1);
- canvas->save();
- } else {
- canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
- }
- ++i;
- SkColor color = rand.nextU();
- color = 0xff000000 | color; // force solid
- color = ToolUtils::color_to_565(color);
- this->drawEmpty(canvas, color, rect,
- gStyles[style].fStyle, gFills[fill].fFill);
- SkPaint rectPaint;
- rectPaint.setColor(SK_ColorBLACK);
- rectPaint.setStyle(SkPaint::kStroke_Style);
- rectPaint.setStrokeWidth(-1);
- rectPaint.setAntiAlias(true);
- canvas->drawRect(rect, rectPaint);
- SkPaint labelPaint;
- labelPaint.setColor(color);
- SkFont labelFont(ToolUtils::create_portable_typeface(), 12);
- canvas->drawString(gStyles[style].fName, 0, rect.height() + 15.0f,
- labelFont, labelPaint);
- canvas->drawString(gFills[fill].fName, 0, rect.height() + 28.0f,
- labelFont, labelPaint);
- }
- }
- canvas->restore();
- canvas->restore();
- }
- };
- DEF_GM( return new EmptyPathGM; )
- //////////////////////////////////////////////////////////////////////////////
- static constexpr int kPtsCount = 3;
- static constexpr SkPoint kPts[kPtsCount] = {
- {40, 40},
- {80, 40},
- {120, 40},
- };
- static void make_path_move(SkPath* path) {
- for (SkPoint p : kPts) {
- path->moveTo(p);
- }
- }
- static void make_path_move_close(SkPath* path) {
- for (SkPoint p : kPts) {
- path->moveTo(p);
- path->close();
- }
- }
- static void make_path_move_line(SkPath* path) {
- for (SkPoint p : kPts) {
- path->moveTo(p);
- path->lineTo(p);
- }
- }
- static void make_path_move_mix(SkPath* path) {
- path->moveTo(kPts[0]);
- path->moveTo(kPts[1]); path->close();
- path->moveTo(kPts[2]); path->lineTo(kPts[2]);
- }
- class EmptyStrokeGM : public GM {
- SkString onShortName() override { return SkString("emptystroke"); }
- SkISize onISize() override { return {200, 240}; }
- void onDraw(SkCanvas* canvas) override {
- static constexpr void (*kProcs[])(SkPath*) = {
- make_path_move, // expect red red red
- make_path_move_close, // expect black black black
- make_path_move_line, // expect black black black
- make_path_move_mix, // expect red black black,
- };
- SkPaint strokePaint;
- strokePaint.setStyle(SkPaint::kStroke_Style);
- strokePaint.setStrokeWidth(21);
- strokePaint.setStrokeCap(SkPaint::kSquare_Cap);
- SkPaint dotPaint;
- dotPaint.setColor(SK_ColorRED);
- strokePaint.setStyle(SkPaint::kStroke_Style);
- dotPaint.setStrokeWidth(7);
- for (auto proc : kProcs) {
- SkPath path;
- proc(&path);
- canvas->drawPoints(SkCanvas::kPoints_PointMode, kPtsCount, kPts, dotPaint);
- canvas->drawPath(path, strokePaint);
- canvas->translate(0, 40);
- }
- }
- };
- DEF_GM( return new EmptyStrokeGM; )
- }
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