SkImageTest.cpp File Reference

#include "include/core/SkAlphaType.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorType.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "tests/Test.h"
#include <cstdint>

Go to the source code of this file.

Functions
	DEF_TEST (SkImageFromBitmap_extractSubset, reporter)

Variables
static const int	gWidth = 20
static const int	gHeight = 20

Function Documentation

DEF_TEST()

DEF_TEST	(	SkImageFromBitmap_extractSubset	,
		reporter
	)

Definition at line 25 of file SkImageTest.cpp.

                                                    {
    sk_sp<SkImage> image;
    {
        SkBitmap srcBitmap;
        srcBitmap.allocN32Pixels(gWidth, gHeight);
        srcBitmap.eraseColor(SK_ColorRED);
        SkCanvas canvas(srcBitmap);
        SkIRect r = SkIRect::MakeXYWH(5, 5, gWidth - 5, gWidth - 5);
        SkPaint p;
        p.setColor(SK_ColorGREEN);
        canvas.drawIRect(r, p);
        SkBitmap dstBitmap;
        srcBitmap.extractSubset(&dstBitmap, r);
        image = dstBitmap.asImage();
    }
 
    SkBitmap tgt;
    tgt.allocN32Pixels(gWidth, gHeight);
    SkCanvas canvas(tgt);
    canvas.clear(SK_ColorTRANSPARENT);
    canvas.drawImage(image, 0, 0);
 
    uint32_t pixel = 0;
    SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, kUnpremul_SkAlphaType);
    tgt.readPixels(info, &pixel, 4, 0, 0);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
    tgt.readPixels(info, &pixel, 4, gWidth - 6, gWidth - 6);
    REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
 
    tgt.readPixels(info, &pixel, 4, gWidth - 5, gWidth - 5);
    REPORTER_ASSERT(reporter, pixel == SK_ColorTRANSPARENT);
}

Variable Documentation

gHeight

const int gHeight = 20

static

Definition at line 22 of file SkImageTest.cpp.

gWidth

const int gWidth = 20

static

Definition at line 21 of file SkImageTest.cpp.