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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "sk_tool_utils.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkStream.h"
#include "SkTo.h"
#include "SkTypeface.h"
namespace skiagm {
class ScaledEmojiGM : public GM {
public:
ScaledEmojiGM() { }
protected:
struct EmojiFont {
sk_sp<SkTypeface> fTypeface;
const char* fText;
} fEmojiFont;
void onOnceBeforeDraw() override {
fEmojiFont.fTypeface = sk_tool_utils::emoji_typeface();
fEmojiFont.fText = sk_tool_utils::emoji_sample_text();
}
SkString onShortName() override {
SkString name("scaledemoji");
name.append(sk_tool_utils::platform_font_manager());
return name;
}
SkISize onISize() override { return SkISize::Make(1200, 1200); }
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
paint.setTypeface(fEmojiFont.fTypeface);
const char* text = fEmojiFont.fText;
// draw text at different point sizes
// Testing GPU bitmap path, SDF path with no scaling,
// SDF path with scaling, path rendering with scaling
SkPaint::FontMetrics metrics;
SkScalar y = 0;
for (SkScalar textSize : { 70, 180, 270, 340 }) {
paint.setTextSize(textSize);
paint.getFontMetrics(&metrics);
y += -metrics.fAscent;
canvas->drawString(text, 10, y, paint);
y += metrics.fDescent + metrics.fLeading;
}
}
private:
typedef GM INHERITED;
};
class ScaledEmojiPosGM : public GM {
public:
ScaledEmojiPosGM() {}
protected:
struct EmojiFont {
sk_sp<SkTypeface> fTypeface;
const char* fText;
} fEmojiFont;
void onOnceBeforeDraw() override {
fEmojiFont.fTypeface = sk_tool_utils::emoji_typeface();
fEmojiFont.fText = sk_tool_utils::emoji_sample_text();
}
SkString onShortName() override {
SkString name("scaledemojipos");
name.append(sk_tool_utils::platform_font_manager());
return name;
}
SkISize onISize() override { return SkISize::Make(1200, 1200); }
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
paint.setTypeface(fEmojiFont.fTypeface);
const char* text = fEmojiFont.fText;
// draw text at different point sizes
// Testing GPU bitmap path, SDF path with no scaling,
// SDF path with scaling, path rendering with scaling
SkPaint::FontMetrics metrics;
SkScalar y = 0;
for (SkScalar textSize : { 70, 180, 270, 340 }) {
paint.setTextSize(textSize);
paint.getFontMetrics(&metrics);
y += -metrics.fAscent;
int len = SkToInt(strlen(text));
SkAutoTArray<SkPoint> pos(len);
SkAutoTArray<SkScalar> widths(len);
paint.getTextWidths(text, len, &widths[0]);
SkScalar x = SkIntToScalar(10);
for (int i = 0; i < len; ++i) {
pos[i].set(x, y);
x += widths[i];
}
canvas->drawPosText(text, len, &pos[0], paint);
y += metrics.fDescent + metrics.fLeading;
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ScaledEmojiGM;)
DEF_GM(return new ScaledEmojiPosGM;)
}
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