skia2/gm/scaledemoji.cpp
Ben Wagner 7fde8e1728 IWYU for gms.
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

154 lines
4.2 KiB
C++

/*
* 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/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontMetrics.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypeface.h"
#include "tools/ToolUtils.h"
#include <string.h>
#include <initializer_list>
static sk_sp<SkTextBlob> make_hpos_test_blob_utf8(const char* text, const SkFont& font) {
constexpr SkTextEncoding enc = SkTextEncoding::kUTF8;
SkTextBlobBuilder builder;
size_t len = strlen(text);
int glyphCount = font.countText(text, len, enc);
const auto& buffer = builder.allocRunPosH(font, glyphCount, 0);
(void)font.textToGlyphs(text, len, enc, buffer.glyphs, glyphCount);
font.getXPos(buffer.glyphs, glyphCount, buffer.pos);
return builder.make();
}
namespace skiagm {
class ScaledEmojiGM : public GM {
public:
ScaledEmojiGM() { }
protected:
struct EmojiFont {
sk_sp<SkTypeface> fTypeface;
const char* fText;
} fEmojiFont;
void onOnceBeforeDraw() override {
fEmojiFont.fTypeface = ToolUtils::emoji_typeface();
fEmojiFont.fText = ToolUtils::emoji_sample_text();
}
SkString onShortName() override {
return SkString("scaledemoji");
}
SkISize onISize() override { return SkISize::Make(1200, 1200); }
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(SK_ColorGRAY);
SkPaint paint;
SkFont font(fEmojiFont.fTypeface);
font.setEdging(SkFont::Edging::kAlias);
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
SkFontMetrics metrics;
SkScalar y = 0;
for (SkScalar textSize : { 70, 180, 270, 340 }) {
font.setSize(textSize);
font.getMetrics(&metrics);
y += -metrics.fAscent;
canvas->drawSimpleText(text, strlen(text), kUTF8_SkTextEncoding, 10, y, font, 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 = ToolUtils::emoji_typeface();
fEmojiFont.fText = ToolUtils::emoji_sample_text();
}
SkString onShortName() override {
return SkString("scaledemojipos");
}
SkISize onISize() override { return SkISize::Make(1200, 1200); }
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(SK_ColorGRAY);
SkPaint paint;
SkFont font;
font.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
SkFontMetrics metrics;
SkScalar y = 0;
for (SkScalar textSize : { 70, 180, 270, 340 }) {
font.setSize(textSize);
font.getMetrics(&metrics);
y += -metrics.fAscent;
sk_sp<SkTextBlob> blob = make_hpos_test_blob_utf8(text, font);
// Draw with an origin.
canvas->drawTextBlob(blob, 10, y, paint);
// Draw with shifted canvas.
canvas->save();
canvas->translate(750, 0);
canvas->drawTextBlob(blob, 10, y, paint);
canvas->restore();
y += metrics.fDescent + metrics.fLeading;
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ScaledEmojiGM;)
DEF_GM(return new ScaledEmojiPosGM;)
}