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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 "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkPictureRecorder.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkPicture.h"
#include "SkTypeface.h"
// effects
#include "SkGradientShader.h"
#include "SkBlurMask.h"
#include "SkBlurDrawLooper.h"
static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) {
bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType));
bm->eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(*bm);
SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h) } };
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
SkPaint paint;
paint.setDither(true);
paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos,
SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode))->unref();
canvas.drawPaint(paint);
}
static void setup(SkPaint* paint, const SkBitmap& bm, bool filter,
SkShader::TileMode tmx, SkShader::TileMode tmy) {
SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy);
paint->setShader(shader)->unref();
paint->setFilterQuality(filter ? kLow_SkFilterQuality : kNone_SkFilterQuality);
}
static const SkColorType gColorTypes[] = {
kN32_SkColorType,
kRGB_565_SkColorType,
};
static const int gWidth = 32;
static const int gHeight = 32;
class TilingView : public SampleView {
SkAutoTUnref<SkPicture> fTextPicture;
SkAutoTUnref<SkDrawLooper> fLooper;
public:
TilingView()
: fLooper(SkBlurDrawLooper::Create(0x88000000,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)),
SkIntToScalar(2), SkIntToScalar(2))) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
makebm(&fTexture[i], gColorTypes[i], gWidth, gHeight);
}
}
virtual ~TilingView() {
}
SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)];
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Tiling");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkRect r = { 0, 0, SkIntToScalar(gWidth*2), SkIntToScalar(gHeight*2) };
static const char* gConfigNames[] = { "8888", "565", "4444" };
static const bool gFilters[] = { false, true };
static const char* gFilterNames[] = { "point", "bilinear" };
static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode };
static const char* gModeNames[] = { "C", "R", "M" };
SkScalar y = SkIntToScalar(24);
SkScalar x = SkIntToScalar(10);
SkPictureRecorder recorder;
SkCanvas* textCanvas = nullptr;
if (nullptr == fTextPicture) {
textCanvas = recorder.beginRecording(1000, 1000, nullptr, 0);
}
if (textCanvas) {
for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
SkPaint p;
SkString str;
p.setAntiAlias(true);
p.setDither(true);
p.setLooper(fLooper);
str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
p.setTextAlign(SkPaint::kCenter_Align);
textCanvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
x += r.width() * 4 / 3;
}
}
}
y += SkIntToScalar(16);
for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) {
x = SkIntToScalar(10);
for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
SkPaint paint;
setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]);
paint.setDither(true);
canvas->save();
canvas->translate(x, y);
canvas->drawRect(r, paint);
canvas->restore();
x += r.width() * 4 / 3;
}
}
if (textCanvas) {
SkPaint p;
SkString str;
p.setAntiAlias(true);
p.setLooper(fLooper);
str.printf("%s, %s", gConfigNames[i], gFilterNames[j]);
textCanvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p);
}
y += r.height() * 4 / 3;
}
}
if (textCanvas) {
SkASSERT(nullptr == fTextPicture);
fTextPicture.reset(recorder.endRecording());
}
SkASSERT(fTextPicture);
canvas->drawPicture(fTextPicture);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new TilingView; }
static SkViewRegister reg(MyFactory);
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