skia2/gm/subsetshader.cpp
Hal Canary c465d13e6f resources: orgainize directory.
Should make it easier to ask just for images.

Change-Id: If821743dc924c4bfbc6b2b2d29b14affde7b3afd
Reviewed-on: https://skia-review.googlesource.com/82684
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
2017-12-08 17:16:00 +00:00

37 lines
1.2 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 "Resources.h"
#include "SkBitmap.h"
#include "SkShader.h"
#include "gm.h"
DEF_SIMPLE_GM(bitmap_subset_shader, canvas, 256, 256) {
canvas->clear(SK_ColorWHITE);
SkBitmap source;
if (!GetResourceAsBitmap("images/color_wheel.png", &source)) {
return;
}
SkIRect left = SkIRect::MakeWH(source.width()/2, source.height());
SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0,
source.width()/2, source.height());
SkBitmap leftBitmap, rightBitmap;
source.extractSubset(&leftBitmap, left);
source.extractSubset(&rightBitmap, right);
SkMatrix matrix;
matrix.setScale(0.75f, 0.75f);
matrix.preRotate(30.0f);
SkShader::TileMode tm = SkShader::kRepeat_TileMode;
SkPaint paint;
paint.setShader(SkShader::MakeBitmapShader(leftBitmap, tm, tm, &matrix));
canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint);
paint.setShader(SkShader::MakeBitmapShader(rightBitmap, tm, tm, &matrix));
canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint);
}