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https://github.com/SerenityOS/serenity
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7070713ec8
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "Histogram.h"
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#include <LibGUI/Frame.h>
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namespace Profiler {
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struct Process;
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class Profile;
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class TimelineView;
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class TimelineTrack final : public GUI::Frame {
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C_OBJECT(TimelineTrack);
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public:
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virtual ~TimelineTrack() override = default;
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void set_scale(float);
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private:
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float column_width() const;
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template<typename Callback>
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void for_each_signpost(Callback);
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virtual void event(Core::Event&) override;
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virtual void paint_event(GUI::PaintEvent&) override;
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virtual void mousemove_event(GUI::MouseEvent&) override;
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struct HistogramInputs {
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bool operator==(HistogramInputs const&) const = default;
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u64 start { 0 };
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u64 end { 0 };
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size_t columns { 0 };
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};
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void recompute_histograms_if_needed(HistogramInputs const&);
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explicit TimelineTrack(TimelineView const&, Profile const&, Process const&);
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TimelineView const& m_view;
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Profile const& m_profile;
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Process const& m_process;
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HistogramInputs m_cached_histogram_inputs;
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Optional<Histogram<u64>> m_kernel_histogram;
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Optional<Histogram<u64>> m_user_histogram;
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decltype(m_kernel_histogram->at(0)) m_max_value { 0 };
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};
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}
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