accept font names, as well as font paths

src/font_cache/font_cache.c

@@ -141,16 +141,22 @@ fnt_tag_from_path(String8 path)
   }
   
   //- rjf: allocate & push new node if we don't have an existing one
-  FNT_FontHashNode *new_node = 0;
   if(existing_node == 0)
   {
+    FP_Handle handle = fp_font_open(path);
     FNT_FontHashSlot *slot = &fnt_state->font_hash_table[slot_idx];
-    new_node = push_array(fnt_state->permanent_arena, FNT_FontHashNode, 1);
-    new_node->tag = result;
-    new_node->handle = fp_font_open(path);
-    new_node->metrics = fp_metrics_from_font(new_node->handle);
-    new_node->path = push_str8_copy(fnt_state->permanent_arena, path);
-    SLLQueuePush_N(slot->first, slot->last, new_node, hash_next);
+    existing_node = push_array(fnt_state->permanent_arena, FNT_FontHashNode, 1);
+    existing_node->tag = result;
+    existing_node->handle = handle;
+    existing_node->metrics = fp_metrics_from_font(existing_node->handle);
+    existing_node->path = push_str8_copy(fnt_state->permanent_arena, path);
+    SLLQueuePush_N(slot->first, slot->last, existing_node, hash_next);
+  }
+  
+  //- rjf: tag result must be zero if this is not a valid font
+  if(fp_handle_match(existing_node->handle, fp_handle_zero()))
+  {
+    MemoryZeroStruct(&result);
   }
   
   //- rjf: return

src/font_provider/dwrite/font_provider_dwrite.c

@@ -318,18 +318,64 @@ fp_font_open(String8 path)
 {
   ProfBeginFunction();
   Temp scratch = scratch_begin(0, 0);
-  String16 path16 = str16_from_8(scratch.arena, path);
   FP_DWrite_Font font = {0};
   HRESULT error = 0;
   
-  //- rjf: open font file reference
-  error = IDWriteFactory_CreateFontFileReference(fp_dwrite_state->factory, (WCHAR *)path16.str, 0, &font.file);
+  //- rjf: build initial path task
+  typedef struct PathTask PathTask;
+  struct PathTask
+  {
+    PathTask *next;
+    String8 path;
+  };
+  PathTask start_task = {0, path};
+  PathTask *first_task = &start_task;
+  PathTask *last_task = first_task;
   
-  //- rjf: open font face
-  error = IDWriteFactory_CreateFontFace(fp_dwrite_state->factory, DWRITE_FONT_FACE_TYPE_TRUETYPE, 1, &font.file, 0, DWRITE_FONT_SIMULATIONS_NONE, &font.face);
+  //- rjf: try to open font
+  for(PathTask *t = first_task; t != 0 && font.file == 0; t = t->next)
+  {
+    String16 path16 = str16_from_8(scratch.arena, t->path);
+    error = IDWriteFactory_CreateFontFileReference(fp_dwrite_state->factory, (WCHAR *)path16.str, 0, &font.file);
+    error = IDWriteFactory_CreateFontFace(fp_dwrite_state->factory, DWRITE_FONT_FACE_TYPE_TRUETYPE, 1, &font.file, 0, DWRITE_FONT_SIMULATIONS_NONE, &font.face);
+    
+    // rjf: failure trying just the normal path? -> generate new tasks that search in system folders
+    if(t == first_task && font.file == 0)
+    {
+      // rjf: generate task for user-installed fonts
+      {
+        HKEY reg_key = 0;
+        LSTATUS status = 0;
+        char name[256] = {0};
+        char data[256] = {0};
+        DWORD name_size = sizeof(name);
+        DWORD data_size = sizeof(data);
+        DWORD type = 0;
+        status = RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\Fonts", 0, KEY_QUERY_VALUE, &reg_key);
+        status = RegEnumValueA(reg_key, 0, name, &name_size, 0, &type, data, &data_size);
+        String8 user_fonts_path = str8_cstring(data);
+        PathTask *task = push_array(scratch.arena, PathTask, 1);
+        task->path = push_str8f(scratch.arena, "%s/%S", user_fonts_path, path);
+        SLLQueuePush(first_task, last_task, task);
+      }
+      
+      // rjf: generate task for windows directory (C:/Windows/Fonts, generally)
+      {
+        char windows_path[256] = {0};
+        GetWindowsDirectoryA(windows_path, sizeof(windows_path));
+        PathTask *task = push_array(scratch.arena, PathTask, 1);
+        task->path = push_str8f(scratch.arena, "%s/Fonts/%S", windows_path, path);
+        SLLQueuePush(first_task, last_task, task);
+      }
+    }
+  }
   
   //- rjf: handlify & return
-  FP_Handle handle = fp_dwrite_handle_from_font(font);
+  FP_Handle handle = {0};
+  if(font.file != 0)
+  {
+    handle = fp_dwrite_handle_from_font(font);
+  }
   scratch_end(scratch);
   ProfEnd();
   return handle;

src/raddbg/raddbg.mdesk

@@ -225,8 +225,10 @@ RD_VocabTable:
       @default(1)  'scrolling_animations': bool,
       
       //- rjf: fonts
-      'main_font': string,
-      'code_font': string,
+      @display_name('UI Font') @description("The name or path to the font used when displaying non-code UI elements.")
+        'main_font': string,
+      @display_name('Code Font') @description("The name or path to the font used when displaying code.")
+        'code_font': string,
       
       //- rjf: colors
       @display_name('Color Preset')

src/raddbg/raddbg_core.c

@@ -10394,7 +10394,11 @@ rd_font_from_slot(RD_FontSlot slot)
   
   // rjf: map name -> tag
   FNT_Tag result = {0};
-  if(font_name.size == 0)
+  if(font_name.size != 0)
+  {
+    result = fnt_tag_from_path(font_name);
+  }
+  if(font_name.size == 0 || fnt_tag_match(fnt_tag_zero(), result))
   {
     switch(slot)
     {
@@ -10404,11 +10408,6 @@ rd_font_from_slot(RD_FontSlot slot)
       case RD_FontSlot_Icons:{result = fnt_tag_from_static_data_string(&rd_icon_font_bytes);}break;
     }
   }
-  else
-  {
-    // TODO(rjf): need to handle "system font names" here.
-    result = fnt_tag_from_path(font_name);
-  }
   return result;
 }
 

src/raddbg/raddbg_main.c

@@ -207,10 +207,6 @@
 ////////////////////////////////
 //~ rjf: Hot, Medium Priority Tasks (Low-Hanging-Fruit Features, UI Jank, Cleanup)
 //
-// [ ] Setting the code_font/main_font values to a font name doesn't work.
-//     Should probably make note that you have to set it to a path to a TTF,
-//     since that's not normally how Windows fonts work.
-//
 // [ ] "root" concept in hash store, which buckets keys & allows usage code to
 //     jettison a collection of keys in retained mode fashion
 //
@@ -422,6 +418,9 @@
 //     size dynamically
 // [x] automatically start search query with selected text
 // [x] @feature processor/data breakpoints
+// [x] Setting the code_font/main_font values to a font name doesn't work.
+//     Should probably make note that you have to set it to a path to a TTF,
+//     since that's not normally how Windows fonts work.
 
 ////////////////////////////////
 //~ rjf: Build Options