blob: 453bfa77a64ad9929b3e00b010ac94d06078f803 [file] [log] [blame]
/*
* 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 "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkString.h"
#include "include/utils/SkTextUtils.h"
#include "samplecode/DecodeFile.h"
#include "samplecode/Sample.h"
#include "tools/Resources.h"
#include <vector>
static const char* gNames[] = {
"images/mandrill_512_q075.jpg",
"images/dog.jpg",
};
struct Filter2View : public Sample {
std::vector<SkBitmap> fBitmaps;
void onOnceBeforeDraw() override {
SkASSERT(fBitmaps.empty());
fBitmaps.reserve(SK_ARRAY_COUNT(gNames) * 2);
for (const char* name : gNames) {
SkBitmap bitmap;
(void)decode_file(GetResourceAsData(name), &bitmap);
fBitmaps.push_back(std::move(bitmap));
}
for (const char* name : gNames) {
SkBitmap bitmap;
(void)decode_file(GetResourceAsData(name), &bitmap, kRGB_565_SkColorType);
fBitmaps.push_back(std::move(bitmap));
}
this->setBGColor(SK_ColorGRAY);
}
SkString name() override { return SkString("Filter/Dither"); }
void onDrawContent(SkCanvas* canvas) override {
canvas->translate(SkIntToScalar(10), SkIntToScalar(50));
const SkScalar W = SkIntToScalar(fBitmaps[0].width() + 1);
const SkScalar H = SkIntToScalar(fBitmaps[0].height() + 1);
SkPaint paint;
const SkScalar scale = 0.897917f;
canvas->scale(SK_Scalar1, scale);
for (int k = 0; k < 2; k++) {
paint.setFilterQuality(k == 1 ? kLow_SkFilterQuality : kNone_SkFilterQuality);
for (int j = 0; j < 2; j++) {
paint.setDither(j == 1);
for (int i = 0; i < (int)fBitmaps.size(); i++) {
SkScalar x = (k * (int)fBitmaps.size() + j) * W;
SkScalar y = i * H;
x = SkScalarRoundToScalar(x);
y = SkScalarRoundToScalar(y);
canvas->drawBitmap(fBitmaps[i], x, y, &paint);
SkFont font;
font.setSize(SkIntToScalar(18));
if (i == 0) {
SkString s("dither=");
s.appendS32(paint.isDither());
s.append(" filter=");
s.appendS32(paint.getFilterQuality() != kNone_SkFilterQuality);
SkTextUtils::DrawString(canvas, s.c_str(), x + W/2, y - font.getSize(), font, SkPaint(),
SkTextUtils::kCenter_Align);
}
if (k+j == 2) {
SkString s;
s.append(" depth=");
s.appendS32(fBitmaps[i].colorType() == kRGB_565_SkColorType ? 16 : 32);
SkTextUtils::DrawString(canvas, s.c_str(), x + W + SkIntToScalar(4), y + H/2, font, SkPaint());
}
}
}
}
}
};
DEF_SAMPLE( return new Filter2View(); )