skia2/gm/textblobblockreordering.cpp
Mike Klein 33d2055e59 GM: some header cleanup
gm.h includes sk_tool_utils.h but does not use it.

The bulk of this CL makes each gm that uses sk_tool_utils include it.

sk_tool_utils.h also provided SkRandom and SkTDArray,
so a couple GMs add those headers too.

Change-Id: Ieb2a7c542f0ca89c3223f744fc11b0ff37af36c1
Reviewed-on: https://skia-review.googlesource.com/10014
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
2017-03-22 18:11:49 +00:00

92 lines
2.6 KiB
C++

/*
* Copyright 2016 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 "SkCanvas.h"
#include "SkTextBlob.h"
namespace skiagm {
class TextBlobBlockReordering : public GM {
public:
// This gm tests that textblobs translate properly when their draw order is different from their
// flush order
TextBlobBlockReordering() { }
protected:
void onOnceBeforeDraw() override {
SkTextBlobBuilder builder;
// make textblob
// Large text is used to trigger atlas eviction
SkPaint paint;
paint.setTextSize(56);
const char* text = "AB";
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, 0, yOffset - 30);
// build
fBlob = builder.make();
}
SkString onShortName() override {
return SkString("textblobblockreordering");
}
SkISize onISize() override {
return SkISize::Make(kWidth, kHeight);
}
// This draws the same text blob 3 times. The second draw used a different xfer mode so its
// GrDrawOp doesn't get combined with the first and third. Ultimately, they will be flushed in
// the order first, third, and then second.
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
canvas->translate(10, 40);
SkRect bounds = fBlob->bounds();
const int yDelta = SkScalarFloorToInt(bounds.height()) + 20;
const int xDelta = SkScalarFloorToInt(bounds.width());
canvas->drawTextBlob(fBlob, 0, 0, paint);
canvas->translate(SkIntToScalar(xDelta), SkIntToScalar(yDelta));
// Draw a rect where the text should be, and then twiddle the xfermode so we don't combine.
SkPaint redPaint;
redPaint.setColor(SK_ColorRED);
canvas->drawRect(bounds, redPaint);
SkPaint srcInPaint(paint);
srcInPaint.setBlendMode(SkBlendMode::kSrcIn);
canvas->drawTextBlob(fBlob, 0, 0, srcInPaint);
canvas->translate(SkIntToScalar(xDelta), SkIntToScalar(yDelta));
canvas->drawTextBlob(fBlob, 0, 0, paint);
}
private:
sk_sp<SkTextBlob> fBlob;
static constexpr int kWidth = 275;
static constexpr int kHeight = 200;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new TextBlobBlockReordering;)
}