Flutter Engine
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Bitmap_allocPixelsFlags.cpp
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1// Copyright 2019 Google LLC.
2// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
4// HASH=737e721c7d9e0f367d25521a1b823b9d
5REG_FIDDLE(Bitmap_allocPixelsFlags, 256, 128, false, 0) {
6void draw(SkCanvas* canvas) {
8 bitmap.allocPixelsFlags(SkImageInfo::MakeN32(44, 16, kPremul_SkAlphaType),
10 SkCanvas offscreen(bitmap);
12 SkFont font = SkFont(fontMgr->matchFamilyStyle(nullptr, {}));
13 offscreen.drawString("!@#$%", 0, 12, font, paint);
14 canvas->scale(6, 6);
15 canvas->drawImage(bitmap.asImage(), 0, 0);
16 canvas->drawImage(bitmap.asImage(), 8, 8);
17}
18} // END FIDDLE
@ kPremul_SkAlphaType
pixel components are premultiplied by alpha
Definition SkAlphaType.h:29
static void draw(SkCanvas *canvas, SkRect &target, int x, int y)
Definition aaclip.cpp:27
@ kZeroPixels_AllocFlag
zero pixel memory. No effect. This is the default.
Definition SkBitmap.h:435
void scale(SkScalar sx, SkScalar sy)
void drawString(const char str[], SkScalar x, SkScalar y, const SkFont &font, const SkPaint &paint)
Definition SkCanvas.h:1803
void drawImage(const SkImage *image, SkScalar left, SkScalar top)
Definition SkCanvas.h:1528
sk_sp< SkTypeface > matchFamilyStyle(const char familyName[], const SkFontStyle &) const
const Paint & paint
sk_sp< SkFontMgr > fontMgr
Definition examples.cpp:32
#define REG_FIDDLE(NAME, W, H, TEXT, I)
Definition examples.h:60
static SkImageInfo MakeN32(int width, int height, SkAlphaType at)