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/*
* Copyright 2013 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 "Resources.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkStream.h"
#include "SkTextBlob.h"
#include "SkTypeface.h"
namespace skiagm {
static void draw_blob(SkCanvas* canvas, const SkTextBlob* blob, const SkPaint& skPaint,
const SkRect& clipRect) {
SkPaint clipHairline;
clipHairline.setColor(SK_ColorWHITE);
clipHairline.setStyle(SkPaint::kStroke_Style);
SkPaint paint(skPaint);
canvas->save();
canvas->drawRect(clipRect, clipHairline);
paint.setAlpha(0x20);
canvas->drawTextBlob(blob, 0, 0, paint);
canvas->clipRect(clipRect);
paint.setAlpha(0xFF);
canvas->drawTextBlob(blob, 0, 0, paint);
canvas->restore();
}
class MixedTextBlobsGM : public GM {
public:
MixedTextBlobsGM() { }
protected:
void onOnceBeforeDraw() override {
fEmojiTypeface = sk_tool_utils::emoji_typeface();
fEmojiText = sk_tool_utils::emoji_sample_text();
fReallyBigATypeface = MakeResourceAsTypeface("/fonts/ReallyBigA.ttf");
SkTextBlobBuilder builder;
// make textblob
// Text so large we draw as paths
SkPaint paint;
paint.setTextSize(385);
const char* text = "O";
sk_tool_utils::set_portable_typeface(&paint);
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
SkScalar yOffset = bounds.height();
sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, yOffset);
SkScalar corruptedAx = bounds.width();
SkScalar corruptedAy = yOffset;
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
SkScalar xOffset = boundsHalfWidth;
yOffset = boundsHalfHeight;
// LCD
paint.setTextSize(32);
text = "LCD!!!!!";
paint.setAntiAlias(true);
paint.setSubpixelText(true);
paint.setLCDRenderText(true);
paint.measureText(text, strlen(text), &bounds);
sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.25f,
yOffset - bounds.height() * 0.5f);
yOffset += bounds.height();
// color emoji
if (fEmojiTypeface) {
paint.setAntiAlias(false);
paint.setSubpixelText(false);
paint.setLCDRenderText(false);
paint.setTypeface(fEmojiTypeface);
text = fEmojiText;
paint.measureText(text, strlen(text), &bounds);
sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.3f,
yOffset);
}
// Corrupted font
paint.setTextSize(12);
text = "aA";
paint.setTypeface(fReallyBigATypeface);
sk_tool_utils::add_to_text_blob(&builder, text, paint, corruptedAx, corruptedAy);
fBlob = builder.make();
}
SkString onShortName() override {
SkString name("mixedtextblobs");
name.append(sk_tool_utils::platform_os_emoji());
return name;
}
SkISize onISize() override {
return SkISize::Make(kWidth, kHeight);
}
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
// setup work needed to draw text with different clips
paint.setColor(SK_ColorBLACK);
canvas->translate(10, 40);
paint.setTextSize(40);
// compute the bounds of the text and setup some clips
SkRect bounds = fBlob->bounds();
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
boundsHalfWidth, boundsHalfHeight);
SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
boundsHalfWidth, boundsHalfHeight);
SkRect interiorClip = bounds;
interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip};
size_t count = sizeof(clipRects) / sizeof(SkRect);
for (size_t x = 0; x < count; ++x) {
draw_blob(canvas, fBlob.get(), paint, clipRects[x]);
if (x == (count >> 1) - 1) {
canvas->translate(SkScalarFloorToScalar(bounds.width() + SkIntToScalar(25)),
-(x * SkScalarFloorToScalar(bounds.height() +
SkIntToScalar(25))));
} else {
canvas->translate(0, SkScalarFloorToScalar(bounds.height() + SkIntToScalar(25)));
}
}
}
private:
sk_sp<SkTypeface> fEmojiTypeface;
sk_sp<SkTypeface> fReallyBigATypeface;
const char* fEmojiText;
sk_sp<SkTextBlob> fBlob;
static constexpr int kWidth = 1250;
static constexpr int kHeight = 700;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new MixedTextBlobsGM;)
}
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