From 09519db20cdb620f2440acd0438a2fcd6997d5ba Mon Sep 17 00:00:00 2001 From: reed Date: Sat, 17 Jan 2015 19:36:08 -0800 Subject: [PATCH] fatbits for all 4 views BUG=skia: TBR= Review URL: https://codereview.chromium.org/829043005 --- samplecode/SampleFilterQuality.cpp | 167 +++++++++++++++++++++++------ 1 file changed, 136 insertions(+), 31 deletions(-) diff --git a/samplecode/SampleFilterQuality.cpp b/samplecode/SampleFilterQuality.cpp index 4c778e35e4..12aae83245 100644 --- a/samplecode/SampleFilterQuality.cpp +++ b/samplecode/SampleFilterQuality.cpp @@ -15,12 +15,23 @@ #include "SkRandom.h" #include "SkTime.h" +static SkSurface* make_surface(SkCanvas* canvas, const SkImageInfo& info) { + SkSurface* surface = canvas->newSurface(info); + if (!surface) { + surface = SkSurface::NewRaster(info); + } + return surface; +} + #define N 128 +#define ANGLE_DELTA 3 +#define SCALE_DELTA (SK_Scalar1 / 32) static SkImage* make_image() { - SkImageInfo info = SkImageInfo::MakeN32Premul(N, N); + SkImageInfo info = SkImageInfo::MakeN32(N, N, kOpaque_SkAlphaType); SkAutoTUnref surface(SkSurface::NewRaster(info)); SkCanvas* canvas = surface->getCanvas(); + canvas->drawColor(SK_ColorWHITE); SkPath path; path.setFillType(SkPath::kEvenOdd_FillType); @@ -33,6 +44,36 @@ static SkImage* make_image() { return surface->newImageSnapshot(); } +static SkImage* zoom_up(SkImage* orig) { + const SkScalar S = 8; // amount to scale up + const int D = 2; // dimension scaling for the offscreen + // since we only view the center, don't need to produce the entire thing + + SkImageInfo info = SkImageInfo::MakeN32(orig->width() * D, orig->height() * D, + kOpaque_SkAlphaType); + SkAutoTUnref surface(orig->newSurface(info)); + SkCanvas* canvas = surface->getCanvas(); + canvas->drawColor(SK_ColorWHITE); + canvas->scale(S, S); + canvas->translate(-SkScalarHalf(orig->width()) * (S - D) / S, + -SkScalarHalf(orig->height()) * (S - D) / S); + canvas->drawImage(orig, 0, 0, NULL); + + if (S > 3) { + SkPaint paint; + paint.setColor(SK_ColorWHITE); + for (int i = 1; i < orig->height(); ++i) { + SkScalar y = SkIntToScalar(i); + canvas->drawLine(0, y, SkIntToScalar(orig->width()), y, paint); + } + for (int i = 1; i < orig->width(); ++i) { + SkScalar x = SkIntToScalar(i); + canvas->drawLine(x, 0, x, SkIntToScalar(orig->height()), paint); + } + } + return surface->newImageSnapshot(); +} + struct AnimValue { SkScalar fValue; SkScalar fMin; @@ -74,17 +115,28 @@ struct AnimValue { } }; -#define ANGLE_DELTA 3 -#define SCALE_DELTA (SK_Scalar1 / 32) +static void draw_box_frame(SkCanvas* canvas, int width, int height) { + SkPaint p; + p.setStyle(SkPaint::kStroke_Style); + p.setColor(SK_ColorRED); + SkRect r = SkRect::MakeIWH(width, height); + r.inset(0.5f, 0.5f); + canvas->drawRect(r, p); + canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), p); + canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), p); +} class FilterQualityView : public SampleView { SkAutoTUnref fImage; AnimValue fScale, fAngle; - + SkSize fCell; SkInterpolator fTrans; + bool fShowFatBits; public: - FilterQualityView() : fImage(make_image()), fTrans(2, 2) { + FilterQualityView() : fImage(make_image()), fTrans(2, 2), fShowFatBits(true) { + fCell.set(256, 256); + fScale.set(1, SK_Scalar1 / 8, 1); fAngle.setMod(0, 360); @@ -100,8 +152,6 @@ public: } protected: - - // overrides from SkEventSink bool onQuery(SkEvent* evt) SK_OVERRIDE { if (SampleCode::TitleQ(*evt)) { SampleCode::TitleR(evt, "FilterQuality"); @@ -114,60 +164,115 @@ protected: case '2': fAngle.inc( ANGLE_DELTA); this->inval(NULL); return true; case '3': fScale.inc(-SCALE_DELTA); this->inval(NULL); return true; case '4': fScale.inc( SCALE_DELTA); this->inval(NULL); return true; + case '5': fShowFatBits = !fShowFatBits; this->inval(NULL); return true; default: break; } } return this->INHERITED::onQuery(evt); } - void drawHere(SkCanvas* canvas, SkScalar x, SkScalar y, SkPaint::FilterLevel filter) { - SkAutoCanvasRestore acr(canvas, true); + void drawTheImage(SkCanvas* canvas, const SkISize& size, SkPaint::FilterLevel filter, + SkScalar dx, SkScalar dy) { SkPaint paint; paint.setAntiAlias(true); paint.setFilterLevel(filter); - canvas->translate(x, y); + SkAutoCanvasRestore acr(canvas, true); + + canvas->translate(dx, dy); + + canvas->translate(SkScalarHalf(size.width()), SkScalarHalf(size.height())); canvas->scale(fScale, fScale); canvas->rotate(fAngle); canvas->drawImage(fImage, -SkScalarHalf(fImage->width()), -SkScalarHalf(fImage->height()), &paint); + + if (false) { + acr.restore(); + draw_box_frame(canvas, size.width(), size.height()); + } + } + + void drawHere(SkCanvas* canvas, SkPaint::FilterLevel filter, SkScalar dx, SkScalar dy) { + SkCanvas* origCanvas = canvas; + SkAutoCanvasRestore acr(canvas, true); + + SkISize size = SkISize::Make(fImage->width(), fImage->height()); + + SkAutoTUnref surface; + if (fShowFatBits) { + // scale up so we don't clip rotations + SkImageInfo info = SkImageInfo::MakeN32(fImage->width() * 2, fImage->height() * 2, + kOpaque_SkAlphaType); + surface.reset(make_surface(canvas, info)); + canvas = surface->getCanvas(); + canvas->drawColor(SK_ColorWHITE); + size.set(info.width(), info.height()); + } else { + canvas->translate(SkScalarHalf(fCell.width() - fImage->width()), + SkScalarHalf(fCell.height() - fImage->height())); + } + this->drawTheImage(canvas, size, filter, dx, dy); + + if (surface) { + SkAutoTUnref orig(surface->newImageSnapshot()); + SkAutoTUnref zoomed(zoom_up(orig)); + origCanvas->drawImage(zoomed, + SkScalarHalf(fCell.width() - zoomed->width()), + SkScalarHalf(fCell.height() - zoomed->height())); + } + } + + void drawBorders(SkCanvas* canvas) { + SkPaint p; + p.setStyle(SkPaint::kStroke_Style); + p.setColor(SK_ColorBLUE); + + SkRect r = SkRect::MakeWH(fCell.width() * 2, fCell.height() * 2); + r.inset(SK_ScalarHalf, SK_ScalarHalf); + canvas->drawRect(r, p); + canvas->drawLine(r.left(), r.centerY(), r.right(), r.centerY(), p); + canvas->drawLine(r.centerX(), r.top(), r.centerX(), r.bottom(), p); } void onDrawContent(SkCanvas* canvas) SK_OVERRIDE { + fCell.set(this->height() / 2, this->height() / 2); + SkScalar trans[2]; fTrans.timeToValues(SkTime::GetMSecs(), trans); - canvas->translate(trans[0], trans[1]); - this->inval(NULL); - const struct { - SkScalar fX; - SkScalar fY; - SkPaint::FilterLevel fFilter; - } rec[] = { - { 100, 100, SkPaint::kNone_FilterLevel }, - { 300, 100, SkPaint::kLow_FilterLevel }, - { 100, 300, SkPaint::kMedium_FilterLevel }, - { 300, 300, SkPaint::kHigh_FilterLevel }, - }; - - for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) { - this->drawHere(canvas, rec[i].fX, rec[i].fY, rec[i].fFilter); + for (int y = 0; y < 2; ++y) { + for (int x = 0; x < 2; ++x) { + int index = y * 2 + x; + SkAutoCanvasRestore acr(canvas, true); + canvas->translate(fCell.width() * x, fCell.height() * y); + SkRect r = SkRect::MakeWH(fCell.width(), fCell.height()); + r.inset(4, 4); + canvas->clipRect(r); + this->drawHere(canvas, SkPaint::FilterLevel(index), trans[0], trans[1]); + } } + this->drawBorders(canvas); + + const SkScalar textX = fCell.width() * 2 + 30; + SkPaint paint; paint.setAntiAlias(true); - paint.setTextSize(40); + paint.setTextSize(36); SkString str; str.appendScalar(fScale); - canvas->drawText(str.c_str(), str.size(), 450, 100, paint); + canvas->drawText(str.c_str(), str.size(), textX, 100, paint); str.reset(); str.appendScalar(fAngle); - canvas->drawText(str.c_str(), str.size(), 450, 150, paint); + canvas->drawText(str.c_str(), str.size(), textX, 150, paint); str.reset(); str.appendScalar(trans[0]); - canvas->drawText(str.c_str(), str.size(), 450, 200, paint); + canvas->drawText(str.c_str(), str.size(), textX, 200, paint); str.reset(); str.appendScalar(trans[1]); - canvas->drawText(str.c_str(), str.size(), 450, 250, paint); -} + canvas->drawText(str.c_str(), str.size(), textX, 250, paint); + + this->inval(NULL); + } virtual bool handleKey(SkKey key) { this->inval(NULL); -- 2.34.1