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WindowServer: Load multiple scaled versions of Bitmaps and Cursors

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This enables rendering of mixed-scale screen layouts with e.g. high
resolution cursors and window button icons on high-dpi screens while
using lower resolution bitmaps on regular screens.
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Tom 2021-06-18 19:21:30 -06:00 • committed by Andreas Kling
parent aa15bf81e4
commit 61af9d882e
15 changed files with 269 additions and 99 deletions
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32
Userland/Services/WindowServer/MultiScaleBitmaps.h Normal file
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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/HashMap.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <LibGfx/Bitmap.h>
namespace WindowServer {
class MultiScaleBitmaps : public RefCounted<MultiScaleBitmaps> {
public:
static RefPtr<MultiScaleBitmaps> create(StringView const& filename, StringView const& default_filename = {});
Gfx::Bitmap const& default_bitmap() const { return bitmap(1); }
Gfx::Bitmap const& bitmap(int scale_factor) const;
Gfx::BitmapFormat format() const { return m_format; }
private:
MultiScaleBitmaps() = default;
bool load(StringView const& filename, StringView const& default_filename);
HashMap<int, NonnullRefPtr<Gfx::Bitmap>> m_bitmaps;
Gfx::BitmapFormat m_format { Gfx::BitmapFormat::Invalid };
};
}