arithmode.cpp File Reference

#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkImageFilters.h"
#include "include/effects/SkRuntimeEffect.h"
#include "tools/ToolUtils.h"
#include "tools/fonts/FontToolUtils.h"
#include <utility>
#include "include/effects/SkBlenders.h"

Go to the source code of this file.

Classes
class	ArithmodeGM
class	ArithmodeBlenderGM

Functions
static sk_sp< SkImage >	make_src (int w, int h)
static sk_sp< SkImage >	make_dst (int w, int h)
static void	show_k_text (SkCanvas *canvas, SkScalar x, SkScalar y, const SkScalar k[])

Function Documentation

make_dst()

static sk_sp< SkImage > make_dst ( int  w, int  h  )

static

Definition at line 51 of file arithmode.cpp.

                                             {
    sk_sp<SkSurface> surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(w, h)));
    SkCanvas* canvas = surface->getCanvas();
 
    SkPaint paint;
    SkPoint pts[] = { {0, SkIntToScalar(h)}, {SkIntToScalar(w), 0} };
    SkColor colors[] = {
        SK_ColorBLUE, SK_ColorYELLOW, SK_ColorBLACK, SK_ColorGREEN,
        SK_ColorGRAY,
    };
    paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, std::size(colors),
                                                 SkTileMode::kClamp));
    canvas->drawPaint(paint);
    return surface->makeImageSnapshot();
}

make_src()

static sk_sp< SkImage > make_src ( int  w, int  h  )

static

Definition at line 35 of file arithmode.cpp.

                                             {
    sk_sp<SkSurface> surface(SkSurfaces::Raster(SkImageInfo::MakeN32Premul(w, h)));
    SkCanvas* canvas = surface->getCanvas();
 
    SkPaint paint;
    SkPoint pts[] = { {0, 0}, {SkIntToScalar(w), SkIntToScalar(h)} };
    SkColor colors[] = {
        SK_ColorTRANSPARENT, SK_ColorGREEN, SK_ColorCYAN,
        SK_ColorRED, SK_ColorMAGENTA, SK_ColorWHITE,
    };
    paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, std::size(colors),
                                                 SkTileMode::kClamp));
    canvas->drawPaint(paint);
    return surface->makeImageSnapshot();
}

show_k_text()

static void show_k_text ( SkCanvas *  canvas, SkScalar  x, SkScalar  y, const SkScalar  k[]  )

static

Definition at line 67 of file arithmode.cpp.

                                                                                      {
    SkFont font(ToolUtils::DefaultPortableTypeface(), 24);
    font.setEdging(SkFont::Edging::kAntiAlias);
    SkPaint paint;
    paint.setAntiAlias(true);
    for (int i = 0; i < 4; ++i) {
        SkString str;
        str.appendScalar(k[i]);
        SkScalar width = font.measureText(str.c_str(), str.size(), SkTextEncoding::kUTF8);
        canvas->drawString(str, x, y + font.getSize(), font, paint);
        x += width + SkIntToScalar(10);
    }
}