From db4d0c64f6ebccbe66dfef57ef2edf5850b70abc Mon Sep 17 00:00:00 2001
From: silverweed <silverweed14@proton.me>
Date: Fri, 12 Jul 2024 10:07:27 +0200
Subject: [PATCH] add jump to section

---
 imgui.ini      |  2 +-
 src/render.cpp | 34 ++++++++++++++++++++++++++++------
 src/render.h   |  2 ++
 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/imgui.ini b/imgui.ini
index dff35d5..fe84eb4 100644
--- a/imgui.ini
+++ b/imgui.ini
@@ -8,7 +8,7 @@ Size=1152,1414
 
 [Window][main]
 Pos=0,0
-Size=3440,1440
+Size=1143,1388
 
 [Window][Hex View]
 Pos=91,62
diff --git a/src/render.cpp b/src/render.cpp
index 53a54ed..ede6b91 100644
--- a/src/render.cpp
+++ b/src/render.cpp
@@ -37,6 +37,8 @@ u32 mem_edit_bg_color_fn(const u8 *, u64 off, const void *user_data)
   const RNTuple_Info &rinfo = app->rntinfo;
   u64 rblob_sz = rinfo.rblob_header_size;
 
+  off += app->vsettings.base_display_addr;
+
 #define COL(c) (ImColor((c)[0], (c)[1], (c)[2]))
   if (off <= rinfo.root_file_header_size) return COL(app->vsettings.col_tfile);
   if (rinfo.rng_anchor_key.start <= off && off <= rinfo.rng_anchor_key.end()) return COL(app->vsettings.col_key);
@@ -128,14 +130,34 @@ void update_and_render(Arena *arena, App_State &app, f32 delta_time_ms)
       ImGui::BeginTable("Hex View", 2);
 
       ImGui::TableNextColumn();
-      mem_edit.DrawContents(app.inspected_fmem, app.inspected_file_size);
+
+      assert(app.vsettings.base_display_addr < app.inspected_file_size);
+      void *content = app.inspected_fmem + app.vsettings.base_display_addr;
+      u64 content_size = app.inspected_file_size - app.vsettings.base_display_addr;
+      mem_edit.DrawContents(content, content_size, app.vsettings.base_display_addr);
 
       ImGui::TableNextColumn();
-      ImGui::ColorEdit3("TFile",          app.vsettings.col_tfile,  ImGuiColorEditFlags_NoInputs);
-      ImGui::ColorEdit3("RNTuple Anchor", app.vsettings.col_anchor, ImGuiColorEditFlags_NoInputs);
-      ImGui::ColorEdit3("RNTuple Header", app.vsettings.col_header, ImGuiColorEditFlags_NoInputs);
-      ImGui::ColorEdit3("RNTuple Footer", app.vsettings.col_footer, ImGuiColorEditFlags_NoInputs);
-      ImGui::ColorEdit3("TKey Header",    app.vsettings.col_key,    ImGuiColorEditFlags_NoInputs);
+      ImGuiColorEditFlags flags =  ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoLabel;
+
+      ImGui::ColorEdit3("_TFile",          app.vsettings.col_tfile,  flags);
+      ImGui::SameLine(); 
+      if (ImGui::Button("TFile")) app.vsettings.base_display_addr = 0;
+
+      ImGui::ColorEdit3("_RNTuple Anchor", app.vsettings.col_anchor, flags);
+      ImGui::SameLine(); 
+      if (ImGui::Button("RNTuple Anchor")) app.vsettings.base_display_addr = app.rntinfo.rng_anchor.start;
+
+      ImGui::ColorEdit3("_RNTuple Header", app.vsettings.col_header, flags);
+      ImGui::SameLine(); 
+      if (ImGui::Button("RNTuple Header")) app.vsettings.base_display_addr = app.rntinfo.rng_header.start;
+
+      ImGui::ColorEdit3("_RNTuple Footer", app.vsettings.col_footer, flags);
+      ImGui::SameLine(); 
+      if (ImGui::Button("RNTuple Footer")) app.vsettings.base_display_addr = app.rntinfo.rng_footer.start;
+
+      ImGui::ColorEdit3("_TKey Header",    app.vsettings.col_key,    flags);
+      ImGui::SameLine(); 
+      if (ImGui::Button("TKey Header"))    {} // TODO app.vsettings.base_display_addr = app.rntinfo.rng_footer.start;
 
       ImGui::EndTable();
     }
diff --git a/src/render.h b/src/render.h
index 1813618..6248f8b 100644
--- a/src/render.h
+++ b/src/render.h
@@ -4,6 +4,8 @@ struct Viewer_Settings {
   float col_footer[3];
   float col_key[3];
   float col_tfile[3];
+
+  u64 base_display_addr;
 };
 
 struct Edit_Bg_Color_Data {