From 8f0c5e867eb70f2432d3370cff4b57d4edbaec5f Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf@nereid.pl>
Date: Sat, 27 Mar 2021 13:25:21 +0100
Subject: [PATCH] Source tooltip implementation.

---
 server/TracyView.cpp | 46 ++++++++++++++++++++++++++++++++++++++++++++
 server/TracyView.hpp |  3 +++
 2 files changed, 49 insertions(+)

diff --git a/server/TracyView.cpp b/server/TracyView.cpp
index 4f69bea6..22a165d0 100644
--- a/server/TracyView.cpp
+++ b/server/TracyView.cpp
@@ -17801,4 +17801,50 @@ const char* View::SourceSubstitution( const char* srcFile ) const
     return res.c_str();
 }
 
+void View::DrawSourceTooltip( const char* filename, uint32_t srcline, int before, int after, bool separateTooltip )
+{
+    if( !SourceFileValid( filename, m_worker.GetCaptureTime(), *this, m_worker ) ) return;
+    m_srcHintCache.Parse( filename, m_worker, *this );
+    if( m_srcHintCache.empty() ) return;
+    if( separateTooltip ) ImGui::BeginTooltip();
+    if( m_fixedFont ) ImGui::PushFont( m_fixedFont );
+    auto& lines = m_srcHintCache.get();
+    const int start = std::max( 0, (int)srcline - ( before+1 ) );
+    const int end = std::min<int>( m_srcHintCache.get().size(), srcline + after );
+    for( int i=start; i<end; i++ )
+    {
+        auto& line = lines[i];
+        if( line.begin == line.end )
+        {
+            ImGui::TextUnformatted( "" );
+        }
+        else
+        {
+            auto ptr = line.begin;
+            auto it = line.tokens.begin();
+            while( ptr < line.end )
+            {
+                if( it == line.tokens.end() )
+                {
+                    ImGui::TextUnformatted( ptr, line.end );
+                    ImGui::SameLine( 0, 0 );
+                    break;
+                }
+                if( ptr < it->begin )
+                {
+                    ImGui::TextUnformatted( ptr, it->begin );
+                    ImGui::SameLine( 0, 0 );
+                }
+                TextColoredUnformatted( i == srcline-1 ? SyntaxColors[(int)it->color] : SyntaxColorsDimmed[(int)it->color], it->begin, it->end );
+                ImGui::SameLine( 0, 0 );
+                ptr = it->end;
+                ++it;
+            }
+            ImGui::ItemSize( ImVec2( 0, 0 ), 0 );
+        }
+    }
+    if( m_fixedFont ) ImGui::PopFont();
+    if( separateTooltip ) ImGui::EndTooltip();
+}
+
 }
diff --git a/server/TracyView.hpp b/server/TracyView.hpp
index af2418ec..c1b76884 100644
--- a/server/TracyView.hpp
+++ b/server/TracyView.hpp
@@ -14,6 +14,7 @@
 #include "TracyDecayValue.hpp"
 #include "TracyImGui.hpp"
 #include "TracyShortPtr.hpp"
+#include "TracySourceContents.hpp"
 #include "TracyTexture.hpp"
 #include "TracyUserData.hpp"
 #include "TracyVector.hpp"
@@ -193,6 +194,7 @@ private:
     void DrawSampleParents();
     void DrawRanges();
     void DrawRangeEntry( Range& range, const char* label, uint32_t color, const char* popupLabel, int id );
+    void DrawSourceTooltip( const char* filename, uint32_t line, int before = 3, int after = 3, bool separateTooltip = true );
 
     void ListMemData( std::vector<const MemEvent*>& vec, std::function<void(const MemEvent*)> DrawAddress, const char* id = nullptr, int64_t startTime = -1, uint64_t pool = 0 );
 
@@ -414,6 +416,7 @@ private:
     Vector<const ZoneEvent*> m_zoneInfoStack;
     Vector<const GpuEvent*> m_gpuInfoStack;
 
+    SourceContents m_srcHintCache;
     std::unique_ptr<SourceView> m_sourceView;
     const char* m_sourceViewFile;
     bool m_uarchSet = false;