ImVector: added resize() variant with initialization value

imgui.h

@@ -924,12 +924,13 @@ public:
     inline int                  _grow_capacity(int size) const  { int new_capacity = Capacity ? (Capacity + Capacity/2) : 8; return new_capacity > size ? new_capacity : size; }
 
     inline void                 resize(int new_size)            { if (new_size > Capacity) reserve(_grow_capacity(new_size)); Size = new_size; }
+    inline void                 resize(int new_size, const T& v){ if (new_size > Capacity) reserve(_grow_capacity(new_size)); if (new_size > Size) for (int n = Size; n < new_size; n++) Data[n] = v; Size = new_size; }
     inline void                 reserve(int new_capacity)
     {
         if (new_capacity <= Capacity) return;
-        T* new_data = (value_type*)ImGui::MemAlloc((size_t)new_capacity * sizeof(value_type));
+        T* new_data = (value_type*)ImGui::MemAlloc((size_t)new_capacity * sizeof(T));
         if (Data)
-            memcpy(new_data, Data, (size_t)Size * sizeof(value_type));
+            memcpy(new_data, Data, (size_t)Size * sizeof(T));
         ImGui::MemFree(Data);
         Data = new_data;
         Capacity = new_capacity;

imgui_draw.cpp

@@ -1912,16 +1912,10 @@ void ImFont::SetFallbackChar(ImWchar c)
 void ImFont::GrowIndex(int new_size)
 {
     IM_ASSERT(IndexXAdvance.Size == IndexLookup.Size);
-    int old_size = IndexLookup.Size;
+    if (new_size <= IndexLookup.Size)
-    if (new_size <= old_size)
         return;
-    IndexXAdvance.resize(new_size);
+    IndexXAdvance.resize(new_size, -1.0f);
-    IndexLookup.resize(new_size);
+    IndexLookup.resize(new_size, (unsigned short)-1);
-    for (int i = old_size; i < new_size; i++)
-    {
-        IndexXAdvance[i] = -1.0f;
-        IndexLookup[i] = (unsigned short)-1;
-    }
 }
 
 void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)