Hud elements cat_file function

README.md

@@ -263,6 +263,8 @@ Parameters that are enabled by default have to be explicitly disabled. These (cu
 | `battery`                          | Display current battery percent and energy consumption                                |
 | `battery_icon`                     | Display battery icon instead of percent                                               |
 | `battery_color`                    | Change the BATT text color                                                            |
+| `cat_file`                         | Display the first line of a text file in next column,e.g<br>`custom_text=Distro`<br>`cat_file=/etc/issue` |
+
 Example: `MANGOHUD_CONFIG=cpu_temp,gpu_temp,position=top-right,height=500,font_size=32`
 Because comma is also used as option delimiter and needs to be escaped for values with a backslash, you can use `+` like `MANGOHUD_CONFIG=fps_limit=60+30+0` instead.
 

src/hud_elements.cpp

@@ -5,6 +5,7 @@
 #include "memory.h"
 #include "mesa/util/macros.h"
 #include "string_utils.h"
+#include "file_utils.h"
 #include <IconsForkAwesome.h>
 
 // Cut from https://github.com/ocornut/imgui/pull/2943
@@ -560,6 +561,17 @@ void HudElements::_exec(){
     ImGui::PopFont();
 }
 
+void HudElements::_cat_file(){
+    std::string value = HUDElements.ordered_functions[HUDElements.place].second;
+    ImGui::PushFont(HUDElements.sw_stats->font1);
+    ImGui::TableNextColumn();
+    for (auto& item : HUDElements.cat_file_list){
+        if (item.pos == HUDElements.place)
+            ImGui::Text("%s", item.ret.c_str());
+    }
+    ImGui::PopFont();
+}
+
 void HudElements::gamemode(){
     if (HUDElements.params->enabled[OVERLAY_PARAM_ENABLED_gamemode]){
         ImGui::TableNextRow(); ImGui::TableNextColumn();
@@ -773,6 +785,8 @@ void HudElements::sort_elements(std::pair<std::string, std::string> option){
     if (param == "vkbasalt")        { ordered_functions.push_back({vkbasalt, value});               }
     if (param == "exec")            { ordered_functions.push_back({_exec, value});
                                       exec_list.push_back({int(ordered_functions.size() - 1), value});       }
+    if (param == "cat_file")        { ordered_functions.push_back({_cat_file, value});
+                                      cat_file_list.push_back({int(ordered_functions.size() - 1), value});   }
     if (param == "battery")         { ordered_functions.push_back({battery, value});                }
     if (param == "graphs"){
         if (!HUDElements.params->enabled[OVERLAY_PARAM_ENABLED_graphs])
@@ -819,4 +833,16 @@ void HudElements::update_exec(){
         item.ret = exec(item.value);
 }
 
+void HudElements::update_cat_file(){
+    for(auto& item : cat_file_list){
+
+        if (!file_exists(item.value)) {
+            item.ret = "File not found";
+            return ;
+        }
+            //amdgpu.busy = fopen((path + "/gpu_busy_percent").c_str(), "r");
+        item.ret = read_line(item.value);
+    }
+}
+
 HudElements HUDElements;

src/hud_elements.h

@@ -16,6 +16,11 @@ class HudElements{
             std::string     value;
             std::string     ret;
         };
+        struct cat_file_list {
+            int             pos;
+            std::string     value;
+            std::string     ret;
+        };
         float ralign_width;
         float old_scale;
         float res_width, res_height;
@@ -30,9 +35,11 @@ class HudElements{
             "vram", "ram", "cpu_temp", "gpu_temp"
         };
         std::vector<exec_list> exec_list;
+        std::vector<cat_file_list> cat_file_list;
         void sort_elements(std::pair<std::string, std::string> option);
         void legacy_elements();
         void update_exec();
+        void update_cat_file();
         static void version();
         static void time();
         static void gpu_stats();
@@ -57,6 +64,7 @@ class HudElements{
         static void gamemode();
         static void graphs();
         static void _exec();
+        static void _cat_file();
         static void battery();
 
         void convert_colors(struct overlay_params& params);

src/overlay.cpp

@@ -73,6 +73,7 @@ void update_hw_info(struct swapchain_stats& sw_stats, struct overlay_params& par
    graph_data.push_back(currentLogData);
    logger->notify_data_valid();
    HUDElements.update_exec();
+   HUDElements.update_cat_file();
 }
 
 void update_hud_info(struct swapchain_stats& sw_stats, struct overlay_params& params, uint32_t vendorID){

src/overlay_params.cpp

@@ -650,6 +650,7 @@ parse_overlay_config(struct overlay_params *params,
 
    HUDElements.ordered_functions.clear();
    HUDElements.exec_list.clear();
+   HUDElements.cat_file_list.clear();
    // first pass with env var
    if (env)
       parse_overlay_env(params, env);

src/overlay_params.h

@@ -66,6 +66,7 @@ typedef unsigned long KeySym;
    OVERLAY_PARAM_BOOL(custom_text_center)            \
    OVERLAY_PARAM_BOOL(custom_text)                   \
    OVERLAY_PARAM_BOOL(exec)                          \
+   OVERLAY_PARAM_BOOL(cat_file)                      \
    OVERLAY_PARAM_BOOL(vkbasalt)                      \
    OVERLAY_PARAM_BOOL(gamemode)                      \
    OVERLAY_PARAM_BOOL(battery)                       \