blob: 6f220432fde2ae30942e5afe48cd1795d76758e1 [file] [log] [blame]
/*
* 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);
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,
SkSamplingOptions(),
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;
using INHERITED = GM;
};
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);
}
/*
Test picture-shader's filtering (after the tile is created.
The GM draws a 2x2 grid of tiled images (circle, square, X)
Column 0 should be hard-edged
Column 1 should be filtered
Row 0 deduces this from the paint (legacy behavior)
Row 1 takes this as an explicit parameter (SkFilterMode)
*/
DEF_SIMPLE_GM(picture_shader_filter, canvas, 230, 230) {
auto pic = [&] {
SkRect r = SkRect::MakeWH(100, 100);
SkPictureRecorder recorder;
SkCanvas* c = recorder.beginRecording(r);
SkPaint paint;
paint.setStroke(true);
c->drawRect({5, 5, 95, 95}, paint);
c->drawCircle(50, 50, 30, paint);
c->drawLine(5, 1, 95,95, paint);
c->drawLine(5,95, 95, 1, paint);
return recorder.finishRecordingAsPicture();
}();
struct {
SkPoint fLoc;
SkFilterMode fFilter;
bool fInheritFromPaint;
void setup(SkPaint* paint, sk_sp<SkPicture> pic) const {
SkTileMode tm = SkTileMode::kRepeat;
sk_sp<SkShader> sh;
if (fInheritFromPaint) {
sh = pic->makeShader(tm, tm, nullptr, nullptr);
paint->setFilterQuality(fFilter == SkFilterMode::kNearest ? kNone_SkFilterQuality
: kLow_SkFilterQuality);
} else {
sh = pic->makeShader(tm, tm, fFilter, nullptr, nullptr);
// the draw should ignore paint's filterquality,
// but we'll set it to something wacky just to be test that
paint->setFilterQuality(kHigh_SkFilterQuality);
}
paint->setShader(sh);
}
} recs[] = {
{ {0, 0}, SkFilterMode::kNearest, true },
{ {1, 0}, SkFilterMode::kLinear, true },
{ {0, 1}, SkFilterMode::kNearest, false },
{ {1, 1}, SkFilterMode::kLinear, false },
};
canvas->translate(10, 10);
canvas->scale(1.0f/3, 1.0f/3);
for (const auto& r : recs) {
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(r.fLoc.fX * 330, r.fLoc.fY * 330);
SkPaint paint;
r.setup(&paint, pic);
canvas->drawRect({0, 0, 300, 300}, paint);
}
}