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>
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
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* Copyright 2014 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 "Resources.h"
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#include "SkData.h"
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#include "SkImage.h"
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#include "gm.h"
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#include "sk_tool_utils.h"
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static void draw_image(SkCanvas* canvas, const char* resource, int x, int y) {
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sk_sp<SkImage> image(GetResourceAsImage(resource));
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if (image) {
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canvas->drawImage(image, SkIntToScalar(x), SkIntToScalar(y));
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} else {
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SkDebugf("\nCould not decode file '%s'. Did you forget"
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" to set the resourcePath?\n", resource);
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}
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}
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/*
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This GM tests whether the image decoders properly decode each color
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channel. Four copies of the same image should appear in the GM, and
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the letter R should be red, B should be blue, G green, C cyan, M
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magenta, Y yellow, and K black. In all but the JPEG version of the
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image, the letters should be on a white disc on a transparent
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background (rendered as a checkerboard). The JPEG image has a grey
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background and compression artifacts.
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*/
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DEF_SIMPLE_GM(colorwheel, canvas, 256, 256) {
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sk_tool_utils::draw_checkerboard(canvas);
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draw_image(canvas, "color_wheel.png", 0, 0); // top left
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draw_image(canvas, "color_wheel.gif", 128, 0); // top right
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draw_image(canvas, "color_wheel.webp", 0, 128); // bottom left
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draw_image(canvas, "color_wheel.jpg", 128, 128); // bottom right
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}
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DEF_SIMPLE_GM(colorwheelnative, canvas, 128, 28) {
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SkPaint paint;
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sk_tool_utils::set_portable_typeface(&paint, "sans-serif",
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SkFontStyle::FromOldStyle(SkTypeface::kBold));
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paint.setTextSize(18.0f);
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canvas->clear(sk_tool_utils::color_to_565(SK_ColorLTGRAY));
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paint.setColor(SK_ColorRED);
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canvas->drawString("R", 8.0f, 20.0f, paint);
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paint.setColor(SK_ColorGREEN);
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canvas->drawString("G", 24.0f, 20.0f, paint);
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paint.setColor(SK_ColorBLUE);
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canvas->drawString("B", 40.0f, 20.0f, paint);
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paint.setColor(SK_ColorCYAN);
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canvas->drawString("C", 56.0f, 20.0f, paint);
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paint.setColor(SK_ColorMAGENTA);
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canvas->drawString("M", 72.0f, 20.0f, paint);
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paint.setColor(SK_ColorYELLOW);
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canvas->drawString("Y", 88.0f, 20.0f, paint);
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paint.setColor(SK_ColorBLACK);
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canvas->drawString("K", 104.0f, 20.0f, paint);
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}
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