Profiler: Rename ProfileTimelineWidget => TimelineTrack

2025-07-26 16:07:45 +00:00 · 2021-05-06 19:00:48 +02:00 · 2021-05-06 19:00:48 +02:00 · 814200f8da
commit 814200f8da
parent abc3ad01b2
5 changed files with 22 additions and 21 deletions
--- a/Userland/DevTools/Profiler/TimelineTrack.cpp
+++ b/Userland/DevTools/Profiler/TimelineTrack.cpp
@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "TimelineTrack.h"
+#include "Profile.h"
+#include "TimelineView.h"
+#include <LibGUI/Painter.h>
+#include <LibGfx/Font.h>
+#include <LibGfx/Palette.h>
+
+namespace Profiler {
+
+TimelineTrack::TimelineTrack(TimelineView& view, Profile& profile, Process const& process)
+    : m_view(view)
+    , m_profile(profile)
+    , m_process(process)
+{
+    set_fill_with_background_color(true);
+    set_background_role(Gfx::ColorRole::Base);
+    set_fixed_height(40);
+    set_fixed_width(m_profile.length_in_ms() / 10);
+    set_frame_thickness(1);
+}
+
+TimelineTrack::~TimelineTrack()
+{
+}
+
+void TimelineTrack::paint_event(GUI::PaintEvent& event)
+{
+    GUI::Frame::paint_event(event);
+
+    GUI::Painter painter(*this);
+    painter.add_clip_rect(event.rect());
+
+    const u64 start_of_trace = m_profile.first_timestamp();
+    const u64 end_of_trace = start_of_trace + m_profile.length_in_ms();
+
+    const auto clamp_timestamp = [start_of_trace, end_of_trace](u64 timestamp) -> u64 {
+        return min(end_of_trace, max(timestamp, start_of_trace));
+    };
+
+    float column_width = (float)frame_inner_rect().width() / (float)m_profile.length_in_ms();
+    float frame_height = (float)frame_inner_rect().height() / (float)m_profile.deepest_stack_depth();
+
+    for (auto& event : m_profile.events()) {
+        if (event.pid != m_process.pid)
+            continue;
+
+        if (!m_process.valid_at(event.timestamp))
+            continue;
+
+        u64 t = clamp_timestamp(event.timestamp) - start_of_trace;
+        int x = (int)((float)t * column_width);
+        int cw = max(1, (int)column_width);
+
+        int column_height = frame_inner_rect().height() - (int)((float)event.frames.size() * frame_height);
+
+        bool in_kernel = event.in_kernel;
+        Color color = in_kernel ? Color::from_rgb(0xc25e5a) : Color::from_rgb(0x5a65c2);
+        for (int i = 1; i <= cw; ++i)
+            painter.draw_line({ x + i, frame_thickness() + column_height }, { x + i, height() - frame_thickness() * 2 }, color);
+    }
+
+    u64 normalized_start_time = clamp_timestamp(min(m_view.select_start_time(), m_view.select_end_time()));
+    u64 normalized_end_time = clamp_timestamp(max(m_view.select_start_time(), m_view.select_end_time()));
+    u64 normalized_hover_time = clamp_timestamp(m_view.hover_time());
+
+    int select_start_x = (int)((float)(normalized_start_time - start_of_trace) * column_width);
+    int select_end_x = (int)((float)(normalized_end_time - start_of_trace) * column_width);
+    int select_hover_x = (int)((float)(normalized_hover_time - start_of_trace) * column_width);
+    painter.fill_rect({ select_start_x, frame_thickness(), select_end_x - select_start_x, height() - frame_thickness() * 2 }, Color(0, 0, 0, 60));
+    painter.fill_rect({ select_hover_x, frame_thickness(), 1, height() - frame_thickness() * 2 }, Color::NamedColor::Black);
+
+    {
+        StringBuilder timeline_desc_builder;
+
+        timeline_desc_builder.appendff("{} ({}), ", m_process.executable, m_process.pid);
+
+        timeline_desc_builder.appendff("Time: {} ms", normalized_hover_time - start_of_trace);
+        if (normalized_start_time != normalized_end_time) {
+            auto start = normalized_start_time - start_of_trace;
+            auto end = normalized_end_time - start_of_trace;
+            timeline_desc_builder.appendff(", Selection: {} - {} ms", start, end);
+        }
+        const auto text = timeline_desc_builder.build();
+        Gfx::IntRect rect {
+            frame_thickness() + 3,
+            frame_thickness() + 3,
+            font().width(text),
+            font().glyph_height()
+        };
+        painter.draw_text(rect, text, font());
+    }
+}
+
+u64 TimelineTrack::timestamp_at_x(int x) const
+{
+    float column_width = (float)frame_inner_rect().width() / (float)m_profile.length_in_ms();
+    float ms_into_profile = (float)x / column_width;
+    return m_profile.first_timestamp() + (u64)ms_into_profile;
+}
+
+void TimelineTrack::mousedown_event(GUI::MouseEvent& event)
+{
+    if (event.button() != GUI::MouseButton::Left)
+        return;
+
+    m_view.set_selecting({}, true);
+    m_view.set_select_start_time({}, timestamp_at_x(event.x()));
+    m_view.set_select_end_time({}, m_view.select_start_time());
+    m_profile.set_timestamp_filter_range(m_view.select_start_time(), m_view.select_end_time());
+    update();
+}
+
+void TimelineTrack::mousemove_event(GUI::MouseEvent& event)
+{
+    m_view.set_hover_time({}, timestamp_at_x(event.x()));
+
+    if (m_view.is_selecting()) {
+        m_view.set_select_end_time({}, m_view.hover_time());
+        m_profile.set_timestamp_filter_range(m_view.select_start_time(), m_view.select_end_time());
+    }
+
+    update();
+}
+
+void TimelineTrack::mouseup_event(GUI::MouseEvent& event)
+{
+    if (event.button() != GUI::MouseButton::Left)
+        return;
+
+    m_view.set_selecting({}, false);
+    if (m_view.select_start_time() == m_view.select_end_time())
+        m_profile.clear_timestamp_filter_range();
+}
+
+}