2a475eae62
Many tests and examples use drawText with a guess of how long the text is in bytes, or a call to strlen(). Add a helper to SkCanvas to simplify these examples. Add another helper for SkString. R=reed@google.com Change-Id: I0204a31e938f065606f08ee7cd9a6b36db791ee2 Reviewed-on: https://skia-review.googlesource.com/13642 Commit-Queue: Cary Clark <caryclark@google.com> Reviewed-by: Cary Clark <caryclark@google.com> Reviewed-by: Mike Reed <reed@google.com> Reviewed-by: Cary Clark <caryclark@skia.org>
94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "sk_tool_utils.h"
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#include "SkBlurImageFilter.h"
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#include "SkRandom.h"
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// TODO deprecate imageblur
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#define WIDTH 500
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#define HEIGHT 500
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constexpr float kBlurSigmas[] = {
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0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f };
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const char* kTestStrings[] = {
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"The quick`~",
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"brown fox[]",
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"jumped over",
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"the lazy@#$",
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"dog.{}!%^&",
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"*()+=-\\'\"/",
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};
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namespace skiagm {
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class BlurImageFilter : public GM {
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public:
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BlurImageFilter() {
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this->setBGColor(0xFFFFFFFF);
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fName.printf("imageblur2");
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}
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protected:
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SkString onShortName() override {
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return fName;
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}
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SkISize onISize() override {
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return SkISize::Make(WIDTH, HEIGHT);
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}
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void onDraw(SkCanvas* canvas) override {
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const int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas);
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const int testStringCount = SK_ARRAY_COUNT(kTestStrings);
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SkScalar dx = WIDTH / sigmaCount;
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SkScalar dy = HEIGHT / sigmaCount;
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const SkScalar textSize = 12;
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for (int x = 0; x < sigmaCount; x++) {
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SkScalar sigmaX = kBlurSigmas[x];
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for (int y = 0; y < sigmaCount; y++) {
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SkScalar sigmaY = kBlurSigmas[y];
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SkPaint paint;
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paint.setImageFilter(SkBlurImageFilter::Make(sigmaX, sigmaY, nullptr));
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canvas->saveLayer(nullptr, &paint);
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SkRandom rand;
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SkPaint textPaint;
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textPaint.setAntiAlias(false);
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textPaint.setColor(sk_tool_utils::color_to_565(rand.nextBits(24) | 0xFF000000));
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sk_tool_utils::set_portable_typeface(&textPaint);
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textPaint.setTextSize(textSize);
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for (int i = 0; i < testStringCount; i++) {
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canvas->drawString(kTestStrings[i],
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SkIntToScalar(x * dx),
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SkIntToScalar(y * dy + textSize * i + textSize),
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textPaint);
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}
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canvas->restore();
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}
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}
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}
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private:
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SkString fName;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new BlurImageFilter;)
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}
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