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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/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkFont.h"
- #include "include/core/SkFontTypes.h"
- #include "include/core/SkMatrix.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPoint.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkTileMode.h"
- #include "include/core/SkTypeface.h"
- #include "include/core/SkTypes.h"
- #include "include/effects/SkGradientShader.h"
- #include "tools/ToolUtils.h"
- #include <string.h>
- namespace skiagm {
- static void makebm(SkBitmap* bm, int w, int h) {
- bm->allocN32Pixels(w, h);
- bm->eraseColor(SK_ColorTRANSPARENT);
- SkCanvas canvas(*bm);
- SkScalar s = SkIntToScalar(SkMin32(w, h));
- const SkPoint kPts0[] = { { 0, 0 }, { s, s } };
- const SkPoint kPts1[] = { { s/2, 0 }, { s/2, s } };
- const SkScalar kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
- const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 };
- const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 };
- SkPaint paint;
- paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos,
- SK_ARRAY_COUNT(kColors0), SkTileMode::kClamp));
- canvas.drawPaint(paint);
- paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos,
- SK_ARRAY_COUNT(kColors1), SkTileMode::kClamp));
- canvas.drawPaint(paint);
- }
- ///////////////////////////////////////////////////////////////////////////////
- struct LabeledMatrix {
- SkMatrix fMatrix;
- const char* fLabel;
- };
- constexpr int kPointSize = 300;
- class ShaderText3GM : public GM {
- public:
- ShaderText3GM() {
- this->setBGColor(0xFFDDDDDD);
- }
- protected:
- SkString onShortName() override {
- return SkString("shadertext3");
- }
- SkISize onISize() override { return SkISize::Make(820, 930); }
- void onOnceBeforeDraw() override {
- makebm(&fBmp, kPointSize / 4, kPointSize / 4);
- }
- void onDraw(SkCanvas* canvas) override {
- SkPaint bmpPaint;
- bmpPaint.setAntiAlias(true);
- bmpPaint.setFilterQuality(kLow_SkFilterQuality);
- bmpPaint.setAlphaf(0.5f);
- canvas->drawBitmap(fBmp, 5.f, 5.f, &bmpPaint);
- SkFont font(ToolUtils::create_portable_typeface(), SkIntToScalar(kPointSize));
- SkPaint outlinePaint;
- outlinePaint.setStyle(SkPaint::kStroke_Style);
- outlinePaint.setStrokeWidth(0.f);
- canvas->translate(15.f, 15.f);
- // draw glyphs scaled up
- canvas->scale(2.f, 2.f);
- constexpr SkTileMode kTileModes[] = {
- SkTileMode::kRepeat,
- SkTileMode::kMirror,
- };
- // position the baseline of the first run
- canvas->translate(0.f, 0.75f * kPointSize);
- canvas->save();
- int i = 0;
- for (size_t tm0 = 0; tm0 < SK_ARRAY_COUNT(kTileModes); ++tm0) {
- for (size_t tm1 = 0; tm1 < SK_ARRAY_COUNT(kTileModes); ++tm1) {
- SkMatrix localM;
- localM.setTranslate(5.f, 5.f);
- localM.postRotate(20);
- localM.postScale(1.15f, .85f);
- SkPaint fillPaint;
- fillPaint.setAntiAlias(true);
- fillPaint.setFilterQuality(kLow_SkFilterQuality);
- fillPaint.setShader(fBmp.makeShader(kTileModes[tm0], kTileModes[tm1], &localM));
- constexpr char kText[] = "B";
- canvas->drawString(kText, 0, 0, font, fillPaint);
- canvas->drawString(kText, 0, 0, font, outlinePaint);
- SkScalar w = font.measureText(kText, strlen(kText), SkTextEncoding::kUTF8);
- canvas->translate(w + 10.f, 0.f);
- ++i;
- if (!(i % 2)) {
- canvas->restore();
- canvas->translate(0, 0.75f * kPointSize);
- canvas->save();
- }
- }
- }
- canvas->restore();
- }
- private:
- SkBitmap fBmp;
- typedef GM INHERITED;
- };
- ///////////////////////////////////////////////////////////////////////////////
- DEF_GM( return new ShaderText3GM; )
- }
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