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LibGfx: Commonize P[BGP]M file loading contexts

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Much of the code in PBM, PGM, and PPM image loaders is common. The
contexts are nearly identical. Instead of writing multiple contexts,
write 1 with a template argument to pass in the details of the given
format.
This commit is contained in:
Lenny Maiorani 2022-03-12 11:16:30 -07:00 • committed by Andreas Kling
parent 5c21f963ff
commit 786b02730c
8 changed files with 109 additions and 124 deletions
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12
Userland/Libraries/LibGfx/PGMLoader.h
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@ -1,16 +1,26 @@
/*
* Copyright (c) 2020, Hüseyin ASLITÜRK <asliturk@hotmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/StringView.h>
#include <LibGfx/ImageDecoder.h>
#include <LibGfx/PortableImageMapLoader.h>
namespace Gfx {
struct PGMLoadingContext;
struct PGM {
static constexpr auto ascii_magic_number = '2';
static constexpr auto binary_magic_number = '5';
static constexpr StringView image_type = "PGM";
u16 max_val { 0 };
};
using PGMLoadingContext = PortableImageMapLoadingContext<PGM>;
class PGMImageDecoderPlugin final : public ImageDecoderPlugin {
public: