skia2/docs/examples/Canvas_SrcRectConstraint.cpp
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00

29 lines
1.3 KiB
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=5df49d1f4da37275a1f10ef7f1a749f0
REG_FIDDLE(Canvas_SrcRectConstraint, 256, 64, false, 0) {
void draw(SkCanvas* canvas) {
SkBitmap redBorder;
redBorder.allocPixels(SkImageInfo::MakeN32Premul(4, 4));
SkCanvas checkRed(redBorder);
checkRed.clear(SK_ColorRED);
uint32_t checkers[][2] = { { SK_ColorBLACK, SK_ColorWHITE },
{ SK_ColorWHITE, SK_ColorBLACK } };
checkRed.writePixels(
SkImageInfo::MakeN32Premul(2, 2), (void*) checkers, sizeof(checkers[0]), 1, 1);
canvas->scale(16, 16);
canvas->drawBitmap(redBorder, 0, 0, nullptr);
canvas->resetMatrix();
sk_sp<SkImage> image = SkImage::MakeFromBitmap(redBorder);
SkPaint lowPaint;
lowPaint.setFilterQuality(kLow_SkFilterQuality);
for (auto constraint : { SkCanvas::kStrict_SrcRectConstraint,
SkCanvas::kFast_SrcRectConstraint } ) {
canvas->translate(80, 0);
canvas->drawImageRect(image.get(), SkRect::MakeLTRB(1, 1, 3, 3),
SkRect::MakeLTRB(16, 16, 48, 48), &lowPaint, constraint);
}
}
} // END FIDDLE