convexpolyclip.cpp File Reference

#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkClipOp.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "tools/ToolUtils.h"
#include "tools/fonts/FontToolUtils.h"

Go to the source code of this file.

Classes
class	skiagm::ConvexPolyClip

Namespaces
namespace	skiagm

Functions
static sk_sp< SkImage >	make_img (int w, int h)

Function Documentation

make_img()

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

static

Definition at line 31 of file convexpolyclip.cpp.

                                             {
    auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32(w, h, kOpaque_SkAlphaType));
    auto canvas = surf->getCanvas();
 
    SkScalar wScalar = SkIntToScalar(w);
    SkScalar hScalar = SkIntToScalar(h);
 
    SkPoint     pt = { wScalar / 2, hScalar / 2 };
 
    SkScalar    radius = 3 * std::max(wScalar, hScalar);
 
    SkColor colors[] = {SK_ColorDKGRAY,
                        ToolUtils::color_to_565(0xFF222255),
                        ToolUtils::color_to_565(0xFF331133),
                        ToolUtils::color_to_565(0xFF884422),
                        ToolUtils::color_to_565(0xFF000022),
                        SK_ColorWHITE,
                        ToolUtils::color_to_565(0xFFAABBCC)};
 
    SkScalar    pos[] = {0,
                         SK_Scalar1 / 6,
                         2 * SK_Scalar1 / 6,
                         3 * SK_Scalar1 / 6,
                         4 * SK_Scalar1 / 6,
                         5 * SK_Scalar1 / 6,
                         SK_Scalar1};
 
    SkPaint paint;
    SkRect rect = SkRect::MakeWH(wScalar, hScalar);
    SkMatrix mat = SkMatrix::I();
    for (int i = 0; i < 4; ++i) {
        paint.setShader(SkGradientShader::MakeRadial(
                        pt, radius,
                        colors, pos,
                        std::size(colors),
                        SkTileMode::kRepeat,
                        0, &mat));
        canvas->drawRect(rect, paint);
        rect.inset(wScalar / 8, hScalar / 8);
        mat.preTranslate(6 * wScalar, 6 * hScalar);
        mat.postScale(SK_Scalar1 / 3, SK_Scalar1 / 3);
    }
 
    SkFont font(ToolUtils::DefaultPortableTypeface(), wScalar / 2.2f);
 
    paint.setShader(nullptr);
    paint.setColor(SK_ColorLTGRAY);
    constexpr char kTxt[] = "Skia";
    SkPoint texPos = { wScalar / 17, hScalar / 2 + font.getSize() / 2.5f };
    canvas->drawSimpleText(kTxt, std::size(kTxt)-1, SkTextEncoding::kUTF8,
                           texPos.fX, texPos.fY, font, paint);
    paint.setColor(SK_ColorBLACK);
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setStrokeWidth(SK_Scalar1);
    canvas->drawSimpleText(kTxt, std::size(kTxt)-1, SkTextEncoding::kUTF8,
                           texPos.fX, texPos.fY, font, paint);
    return surf->makeImageSnapshot();
}