Replace source file viewer with one that actually works.

This is much simpler, custom implementation of a text file viewer. It is able to perform these two tasks as intended: - center source view on the selected line, - highlight that line.
2025-03-20 07:40:02 +08:00 · 2020-03-22 20:53:59 +01:00
parent 57e14c9e5c
commit 9672dba765
10 changed files with 180 additions and 3623 deletions
@@ -0,0 +1,114 @@
+#include <stdio.h>
+
+#include "../imgui/imgui.h"
+#include "TracyImGui.hpp"
+#include "TracyPrint.hpp"
+
+#include "TracySourceView.hpp"
+
+namespace tracy
+{
+
+SourceView::SourceView( ImFont* font )
+    : m_font( font )
+    , m_file( nullptr )
+    , m_data( nullptr )
+    , m_dataSize( 0 )
+    , m_targetLine( 0 )
+    , m_selectedLine( 0 )
+{
+}
+
+SourceView::~SourceView()
+{
+    delete[] m_data;
+}
+
+void SourceView::Open( const char* fileName, int line )
+{
+    m_targetLine = line;
+    m_selectedLine = line;
+
+    if( m_file != fileName )
+    {
+        m_file = fileName;
+        FILE* f = fopen( fileName, "rb" );
+        fseek( f, 0, SEEK_END );
+        const auto sz = ftell( f );
+        fseek( f, 0, SEEK_SET );
+        if( sz > m_dataSize )
+        {
+            delete[] m_data;
+            m_data = new char[sz+1];
+            m_dataSize = sz;
+        }
+        fread( m_data, 1, sz, f );
+        m_data[sz] = '\0';
+        fclose( f );
+
+        m_lines.clear();
+        auto txt = m_data;
+        for(;;)
+        {
+            auto end = txt;
+            while( *end != '\n' && *end != '\r' && end - m_data < sz ) end++;
+            m_lines.emplace_back( Line { txt, end } );
+            if( *end == '\n' )
+            {
+                end++;
+                if( *end == '\r' ) end++;
+            }
+            else if( *end == '\r' )
+            {
+                end++;
+                if( *end == '\n' ) end++;
+            }
+            if( *end == '\0' ) break;
+            txt = end;
+        }
+    }
+}
+
+void SourceView::Render()
+{
+    ImGui::BeginChild( "##sourceView", ImVec2( 0, 0 ), true );
+    if( m_font ) ImGui::PushFont( m_font );
+    const auto nw = ImGui::CalcTextSize( "123,345" ).x;
+    int lineNum = 1;
+    for( auto& line : m_lines )
+    {
+        if( m_targetLine == lineNum )
+        {
+            m_targetLine = 0;
+            ImGui::SetScrollHereY();
+        }
+        RenderLine( line, lineNum++ );
+    }
+    if( m_font ) ImGui::PopFont();
+    ImGui::EndChild();
+}
+
+void SourceView::RenderLine( const Line& line, int lineNum )
+{
+    const auto ty = ImGui::GetFontSize();
+    auto draw = ImGui::GetWindowDrawList();
+    const auto w = ImGui::GetWindowWidth();
+    const auto wpos = ImGui::GetCursorScreenPos();
+    if( lineNum == m_selectedLine )
+    {
+        draw->AddRectFilled( wpos, wpos + ImVec2( w, ty+1 ), 0xFF333322 );
+    }
+
+    const auto lineString = RealToString( lineNum );
+    const auto linesz = strlen( lineString );
+    char buf[16];
+    memset( buf, ' ', 7 - linesz );
+    memcpy( buf + 7 - linesz, lineString, linesz+1 );
+    TextDisabledUnformatted( buf );
+    ImGui::SameLine( 0, ty );
+    ImGui::TextUnformatted( line.begin, line.end );
+
+    draw->AddLine( wpos + ImVec2( 0, ty+2 ), wpos + ImVec2( w, ty+2 ), 0x08FFFFFF );
+}
+
+}