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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."
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/*
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* Copyright (c) 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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#include "TimelineView.h"
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#include "Profile.h"
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#include "TimelineTrack.h"
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#include <LibGUI/BoxLayout.h>
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namespace Profiler {
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TimelineView::TimelineView(Profile& profile)
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: m_profile(profile)
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{
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set_layout<GUI::VerticalBoxLayout>();
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set_shrink_to_fit(true);
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}
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u64 TimelineView::timestamp_at_x(int x) const
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{
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float column_width = (float)width() / (float)m_profile.length_in_ms();
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float ms_into_profile = (float)x / column_width;
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return m_profile.first_timestamp() + (u64)ms_into_profile;
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}
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void TimelineView::mousedown_event(GUI::MouseEvent& event)
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{
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if (event.button() != GUI::MouseButton::Primary)
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return;
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set_selecting(true);
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set_select_start_time(timestamp_at_x(event.x()));
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set_select_end_time(select_start_time());
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m_profile.set_timestamp_filter_range(select_start_time(), select_end_time());
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update();
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}
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void TimelineView::mousemove_event(GUI::MouseEvent& event)
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{
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set_hover_time(timestamp_at_x(event.x()));
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if (is_selecting()) {
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set_select_end_time(hover_time());
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m_profile.set_timestamp_filter_range(select_start_time(), select_end_time());
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}
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update();
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}
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void TimelineView::mouseup_event(GUI::MouseEvent& event)
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{
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if (event.button() != GUI::MouseButton::Primary)
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return;
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set_selecting(false);
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if (select_start_time() == select_end_time())
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m_profile.clear_timestamp_filter_range();
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}
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void TimelineView::mousewheel_event(GUI::MouseEvent& event)
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{
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if (event.modifiers() == Mod_Ctrl) {
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event.accept();
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m_scale += event.wheel_delta_y();
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m_scale = clamp(m_scale, 1.0f, 100.0f);
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for_each_child_of_type<TimelineTrack>([&](auto& track) {
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track.set_scale(m_scale);
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return IterationDecision::Continue;
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});
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on_scale_change();
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}
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}
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}
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