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123 lines
4.4 KiB
C++
123 lines
4.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ProfileTimelineWidget.h"
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#include "Profile.h"
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#include <LibGUI/Painter.h>
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#include <LibGfx/Font.h>
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ProfileTimelineWidget::ProfileTimelineWidget(Profile& profile)
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: m_profile(profile)
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{
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set_fill_with_background_color(true);
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set_fixed_height(80);
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m_hover_time = m_profile.first_timestamp();
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}
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ProfileTimelineWidget::~ProfileTimelineWidget()
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{
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}
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void ProfileTimelineWidget::paint_event(GUI::PaintEvent& event)
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{
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GUI::Frame::paint_event(event);
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GUI::Painter painter(*this);
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painter.add_clip_rect(event.rect());
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const u64 start_of_trace = m_profile.first_timestamp();
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const u64 end_of_trace = start_of_trace + m_profile.length_in_ms();
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const auto clamp_timestamp = [start_of_trace, end_of_trace](u64 timestamp) -> u64 {
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return min(end_of_trace, max(timestamp, start_of_trace));
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};
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float column_width = (float)frame_inner_rect().width() / (float)m_profile.length_in_ms();
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float frame_height = (float)frame_inner_rect().height() / (float)m_profile.deepest_stack_depth();
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for (auto& event : m_profile.events()) {
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u64 t = clamp_timestamp(event.timestamp) - start_of_trace;
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int x = (int)((float)t * column_width);
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int cw = max(1, (int)column_width);
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int column_height = frame_inner_rect().height() - (int)((float)event.frames.size() * frame_height);
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bool in_kernel = event.in_kernel;
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Color color = in_kernel ? Color::from_rgb(0xc25e5a) : Color::from_rgb(0x5a65c2);
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for (int i = 1; i <= cw; ++i)
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painter.draw_line({ x + i, frame_thickness() + column_height }, { x + i, height() - frame_thickness() * 2 }, color);
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}
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u64 normalized_start_time = clamp_timestamp(min(m_select_start_time, m_select_end_time));
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u64 normalized_end_time = clamp_timestamp(max(m_select_start_time, m_select_end_time));
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u64 normalized_hover_time = clamp_timestamp(m_hover_time);
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int select_start_x = (int)((float)(normalized_start_time - start_of_trace) * column_width);
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int select_end_x = (int)((float)(normalized_end_time - start_of_trace) * column_width);
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int select_hover_x = (int)((float)(normalized_hover_time - start_of_trace) * column_width);
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painter.fill_rect({ select_start_x, frame_thickness(), select_end_x - select_start_x, height() - frame_thickness() * 2 }, Color(0, 0, 0, 60));
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painter.fill_rect({ select_hover_x, frame_thickness(), 1, height() - frame_thickness() * 2 }, Color::NamedColor::Black);
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{
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StringBuilder timeline_desc_builder;
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timeline_desc_builder.appendff("Time: {} ms", normalized_hover_time - start_of_trace);
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if (normalized_start_time != normalized_end_time) {
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auto start = normalized_start_time - start_of_trace;
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auto end = normalized_end_time - start_of_trace;
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timeline_desc_builder.appendff(", Selection: {} - {} ms", start, end);
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}
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const auto text = timeline_desc_builder.build();
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Gfx::IntRect rect {
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frame_thickness() + 3,
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frame_thickness() + 3,
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font().width(text),
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font().glyph_height()
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};
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painter.draw_text(rect, text, font());
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}
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}
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u64 ProfileTimelineWidget::timestamp_at_x(int x) const
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{
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float column_width = (float)frame_inner_rect().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 ProfileTimelineWidget::mousedown_event(GUI::MouseEvent& event)
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{
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if (event.button() != GUI::MouseButton::Left)
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return;
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m_selecting = true;
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m_select_start_time = timestamp_at_x(event.x());
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m_select_end_time = m_select_start_time;
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m_profile.set_timestamp_filter_range(m_select_start_time, m_select_end_time);
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update();
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}
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void ProfileTimelineWidget::mousemove_event(GUI::MouseEvent& event)
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{
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m_hover_time = timestamp_at_x(event.x());
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if (m_selecting) {
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m_select_end_time = m_hover_time;
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m_profile.set_timestamp_filter_range(m_select_start_time, m_select_end_time);
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}
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update();
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}
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void ProfileTimelineWidget::mouseup_event(GUI::MouseEvent& event)
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{
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if (event.button() != GUI::MouseButton::Left)
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return;
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m_selecting = false;
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if (m_select_start_time == m_select_end_time)
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m_profile.clear_timestamp_filter_range();
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}
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