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skia2/gm/pictureshader.cpp
Ben Wagner 7fde8e1728 IWYU for gms. 
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

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/*
* 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/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.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/SkTypes.h"
#include "tools/ToolUtils.h"
static struct {
SkTileMode tmx;
SkTileMode tmy;
} kTileConfigs[] = {
{ SkTileMode::kRepeat, SkTileMode::kRepeat },
{ SkTileMode::kRepeat, SkTileMode::kClamp },
{ SkTileMode::kMirror, SkTileMode::kRepeat },
};
class PictureShaderGM : public skiagm::GM {
public:
PictureShaderGM(SkScalar tileSize, SkScalar sceneSize, bool useLocalMatrixWrapper = false)
: fTileSize(tileSize)
, fSceneSize(sceneSize)
, fUseLocalMatrixWrapper(useLocalMatrixWrapper) {}
protected:
void onOnceBeforeDraw() override {
// Build the picture.
SkPictureRecorder recorder;
SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize, nullptr, 0);
this->drawTile(pictureCanvas);
fPicture = recorder.finishRecordingAsPicture();
// Build a reference bitmap.
fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize));
fBitmap.eraseColor(SK_ColorTRANSPARENT);
SkCanvas bitmapCanvas(fBitmap);
this->drawTile(&bitmapCanvas);
}
SkString onShortName() override {
return SkStringPrintf("pictureshader%s", fUseLocalMatrixWrapper ? "_localwrapper" : "");
}
SkISize onISize() override {
return SkISize::Make(1400, 1450);
}
void onDraw(SkCanvas* canvas) override {
this->drawSceneColumn(canvas, SkPoint::Make(0, 0), 1, 1, 0);
this->drawSceneColumn(canvas, SkPoint::Make(0, fSceneSize * 6.4f), 1, 2, 0);
this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, 0), 1, 1, 1);
this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, fSceneSize * 6.4f), 1, 1, 2);
this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 4.8f, 0), 2, 1, 0);
this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 9.6f, 0), 2, 2, 0);
// One last custom row to exercise negative scaling
SkMatrix ctm, localMatrix;
ctm.setTranslate(fSceneSize * 2.1f, fSceneSize * 13.8f);
ctm.preScale(-1, -1);
localMatrix.setScale(2, 2);
this->drawScene(canvas, ctm, localMatrix, 0);
ctm.setTranslate(fSceneSize * 2.4f, fSceneSize * 12.8f);
localMatrix.setScale(-1, -1);
this->drawScene(canvas, ctm, localMatrix, 0);
ctm.setTranslate(fSceneSize * 4.8f, fSceneSize * 12.3f);
ctm.preScale(2, 2);
this->drawScene(canvas, ctm, localMatrix, 0);
ctm.setTranslate(fSceneSize * 13.8f, fSceneSize * 14.3f);
ctm.preScale(-2, -2);
localMatrix.setTranslate(fTileSize / 4, fTileSize / 4);
localMatrix.preRotate(45);
localMatrix.preScale(-2, -2);
this->drawScene(canvas, ctm, localMatrix, 0);
}
private:
void drawSceneColumn(SkCanvas* canvas, const SkPoint& pos, SkScalar scale, SkScalar localScale,
unsigned tileMode) {
SkMatrix ctm, localMatrix;
ctm.setTranslate(pos.x(), pos.y());
ctm.preScale(scale, scale);
localMatrix.setScale(localScale, localScale);
this->drawScene(canvas, ctm, localMatrix, tileMode);
ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 1.2f * scale);
ctm.preScale(scale, scale);
localMatrix.setTranslate(fTileSize / 4, fTileSize / 4);
localMatrix.preScale(localScale, localScale);
this->drawScene(canvas, ctm, localMatrix, tileMode);
ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 2.4f * scale);
ctm.preScale(scale, scale);
localMatrix.setRotate(45);
localMatrix.preScale(localScale, localScale);
this->drawScene(canvas, ctm, localMatrix, tileMode);
ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 3.6f * scale);
ctm.preScale(scale, scale);
localMatrix.setSkew(1, 0);
localMatrix.preScale(localScale, localScale);
this->drawScene(canvas, ctm, localMatrix, tileMode);
ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 4.8f * scale);
ctm.preScale(scale, scale);
localMatrix.setTranslate(fTileSize / 4, fTileSize / 4);
localMatrix.preRotate(45);
localMatrix.preScale(localScale, localScale);
this->drawScene(canvas, ctm, localMatrix, tileMode);
}
void drawTile(SkCanvas* canvas) {
SkPaint paint;
paint.setColor(SK_ColorGREEN);
paint.setStyle(SkPaint::kFill_Style);
paint.setAntiAlias(true);
canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint);
canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2,
fTileSize / 2, fTileSize / 2), paint);
paint.setColor(SK_ColorRED);
canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3,
fTileSize / 2, fTileSize * 2 / 3, paint);
canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2,
fTileSize * 2 / 3, fTileSize / 2, paint);
}
void drawScene(SkCanvas* canvas, const SkMatrix& matrix, const SkMatrix& localMatrix,
unsigned tileMode) {
SkASSERT(tileMode < SK_ARRAY_COUNT(kTileConfigs));
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SK_ColorLTGRAY);
canvas->save();
canvas->concat(matrix);
canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint);
canvas->drawRect(SkRect::MakeXYWH(fSceneSize * 1.1f, 0, fSceneSize, fSceneSize), paint);
auto pictureShader = fPicture->makeShader(kTileConfigs[tileMode].tmx,
kTileConfigs[tileMode].tmy,
fUseLocalMatrixWrapper ? nullptr : &localMatrix,
nullptr);
paint.setShader(fUseLocalMatrixWrapper
? pictureShader->makeWithLocalMatrix(localMatrix)
: pictureShader);
canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint);
canvas->translate(fSceneSize * 1.1f, 0);
auto bitmapShader = fBitmap.makeShader(
kTileConfigs[tileMode].tmx,
kTileConfigs[tileMode].tmy,
fUseLocalMatrixWrapper
? nullptr : &localMatrix);
paint.setShader(fUseLocalMatrixWrapper
? bitmapShader->makeWithLocalMatrix(localMatrix)
: bitmapShader);
canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint);
canvas->restore();
}
sk_sp<SkPicture> fPicture;
SkBitmap fBitmap;
SkScalar fTileSize;
SkScalar fSceneSize;
bool fUseLocalMatrixWrapper;
typedef GM INHERITED;
};
DEF_GM(return new PictureShaderGM(50, 100);)
DEF_GM(return new PictureShaderGM(50, 100, true);)
DEF_SIMPLE_GM(tiled_picture_shader, canvas, 400, 400) {
// https://code.google.com/p/skia/issues/detail?id=3398
SkRect tile = SkRect::MakeWH(100, 100);
SkPictureRecorder recorder;
SkCanvas* c = recorder.beginRecording(tile);
SkRect r = tile;
r.inset(4, 4);
SkPaint p;
p.setColor(ToolUtils::color_to_565(0xFF303F9F)); // dark blue
c->drawRect(r, p);
p.setColor(ToolUtils::color_to_565(0xFFC5CAE9)); // light blue
p.setStrokeWidth(10);
c->drawLine(20, 20, 80, 80, p);
sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
p.setColor(ToolUtils::color_to_565(0xFF8BC34A)); // green
canvas->drawPaint(p);
canvas->clipRect(SkRect::MakeXYWH(0, 0, 400, 350));
p.setColor(0xFFB6B6B6); // gray
canvas->drawPaint(p);
p.setShader(picture->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat));
canvas->drawPaint(p);
}
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