skia2/docs/examples/Bitmap_shiftPerPixel.cpp
John Stiles 7bf799956d Reland "Add format-specifier warnings to SkDebugf."
This is a reland of e58831cd95

Original change's description:
> Add format-specifier warnings to SkDebugf.
>
> This CL fixes up many existing format-specifier violations in Skia.
> Note that GCC has a warning for formatting nothing, so existing calls to
> `SkDebugf("")` have been removed, or replaced with `SkDebugf("%s", "")`.
> These were apparently meant to be used as a place to set a breakpoint.
>
> Some of our clients also use SkDebug with bad format specifiers, so this
> check is currently only enabled when SKIA_IMPLEMENTATION is true.
>
> Change-Id: I8177a1298a624c6936adc24e0d8f481362a356d0
> Bug: skia:12143
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/420902
> Auto-Submit: John Stiles <johnstiles@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>

Bug: skia:12143
Change-Id: Id3c0c21436ebd13899908d5ed5d44c42a0e23921
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/421918
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-06-25 17:57:43 +00:00

25 lines
1.2 KiB
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=56ede4b7d45c15d5936f81ac3d74f070
REG_FIDDLE(Bitmap_shiftPerPixel, 256, 256, true, 0) {
void draw(SkCanvas* canvas) {
const char* colors[] = {"Unknown", "Alpha_8", "RGB_565", "ARGB_4444", "RGBA_8888", "RGB_888x",
"BGRA_8888", "RGBA_1010102", "RGB_101010x", "Gray_8", "RGBA_F16Norm",
"RGBA_F16"};
SkImageInfo info = SkImageInfo::MakeA8(1, 1);
SkBitmap bitmap;
for (SkColorType colorType : {
kUnknown_SkColorType, kAlpha_8_SkColorType, kRGB_565_SkColorType,
kARGB_4444_SkColorType, kRGBA_8888_SkColorType, kRGB_888x_SkColorType,
kBGRA_8888_SkColorType, kRGBA_1010102_SkColorType, kRGB_101010x_SkColorType,
kGray_8_SkColorType, kRGBA_F16_SkColorType
} ) {
bitmap.setInfo(info.makeColorType(colorType));
SkDebugf("color: k" "%s" "_SkColorType" "%*s" "shiftPerPixel: %d\n",
colors[colorType], (int)(14 - strlen(colors[colorType])), " ",
bitmap.shiftPerPixel());
}
}
} // END FIDDLE