Internals: ImHashStr() default parameter.

imgui.cpp

@@ -2535,7 +2535,7 @@ ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
     : DrawListInst(&context->DrawListSharedData)
 {
     Name = ImStrdup(name);
-    ID = ImHashStr(name, 0);
+    ID = ImHashStr(name);
     IDStack.push_back(ID);
     Flags = ImGuiWindowFlags_None;
     Pos = ImVec2(0.0f, 0.0f);
@@ -3629,7 +3629,7 @@ void ImGui::Initialize(ImGuiContext* context)
     // Add .ini handle for ImGuiWindow type
     ImGuiSettingsHandler ini_handler;
     ini_handler.TypeName = "Window";
-    ini_handler.TypeHash = ImHashStr("Window", 0);
+    ini_handler.TypeHash = ImHashStr("Window");
     ini_handler.ReadOpenFn = SettingsHandlerWindow_ReadOpen;
     ini_handler.ReadLineFn = SettingsHandlerWindow_ReadLine;
     ini_handler.WriteAllFn = SettingsHandlerWindow_WriteAll;
@@ -4562,7 +4562,7 @@ ImGuiWindow* ImGui::FindWindowByID(ImGuiID id)
 
 ImGuiWindow* ImGui::FindWindowByName(const char* name)
 {
-    ImGuiID id = ImHashStr(name, 0);
+    ImGuiID id = ImHashStr(name);
     return FindWindowByID(id);
 }
 
@@ -8769,7 +8769,7 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags)
     else
     {
         window = NULL;
-        source_id = ImHashStr("#SourceExtern", 0);
+        source_id = ImHashStr("#SourceExtern");
         source_drag_active = true;
     }
 
@@ -9210,7 +9210,7 @@ ImGuiWindowSettings* ImGui::CreateNewWindowSettings(const char* name)
     g.SettingsWindows.push_back(ImGuiWindowSettings());
     ImGuiWindowSettings* settings = &g.SettingsWindows.back();
     settings->Name = ImStrdup(name);
-    settings->ID = ImHashStr(name, 0);
+    settings->ID = ImHashStr(name);
     return settings;
 }
 
@@ -9225,7 +9225,7 @@ ImGuiWindowSettings* ImGui::FindWindowSettings(ImGuiID id)
 
 ImGuiWindowSettings* ImGui::FindOrCreateWindowSettings(const char* name)
 {
-    if (ImGuiWindowSettings* settings = FindWindowSettings(ImHashStr(name, 0)))
+    if (ImGuiWindowSettings* settings = FindWindowSettings(ImHashStr(name)))
         return settings;
     return CreateNewWindowSettings(name);
 }
@@ -9243,7 +9243,7 @@ void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
 ImGuiSettingsHandler* ImGui::FindSettingsHandler(const char* type_name)
 {
     ImGuiContext& g = *GImGui;
-    const ImGuiID type_hash = ImHashStr(type_name, 0);
+    const ImGuiID type_hash = ImHashStr(type_name);
     for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
         if (g.SettingsHandlers[handler_n].TypeHash == type_hash)
             return &g.SettingsHandlers[handler_n];
@@ -9347,7 +9347,7 @@ const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
 
 static void* SettingsHandlerWindow_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
 {
-    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHashStr(name, 0));
+    ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHashStr(name));
     if (!settings)
         settings = ImGui::CreateNewWindowSettings(name);
     return (void*)settings;

imgui_internal.h

@@ -153,7 +153,7 @@ IMGUI_API int           ImTextCountUtf8BytesFromStr(const ImWchar* in_text, cons
 
 // Helpers: Misc
 IMGUI_API ImU32         ImHashData(const void* data, size_t data_size, ImU32 seed = 0);
-IMGUI_API ImU32         ImHashStr(const char* data, size_t data_size, ImU32 seed = 0);
+IMGUI_API ImU32         ImHashStr(const char* data, size_t data_size = 0, ImU32 seed = 0);
 IMGUI_API void*         ImFileLoadToMemory(const char* filename, const char* file_open_mode, size_t* out_file_size = NULL, int padding_bytes = 0);
 IMGUI_API FILE*         ImFileOpen(const char* filename, const char* file_open_mode);
 static inline bool      ImCharIsBlankA(char c)          { return c == ' ' || c == '\t'; }
@@ -630,7 +630,7 @@ struct ImGuiWindowSettings
 struct ImGuiSettingsHandler
 {
     const char* TypeName;       // Short description stored in .ini file. Disallowed characters: '[' ']'
-    ImGuiID     TypeHash;       // == ImHashStr(TypeName, 0, 0)
+    ImGuiID     TypeHash;       // == ImHashStr(TypeName)
     void*       (*ReadOpenFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler, const char* name);              // Read: Called when entering into a new ini entry e.g. "[Window][Name]"
     void        (*ReadLineFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler, void* entry, const char* line); // Read: Called for every line of text within an ini entry
     void        (*WriteAllFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* out_buf);      // Write: Output every entries into 'out_buf'

imgui_widgets.cpp

@@ -6468,7 +6468,7 @@ static ImU32   ImGui::TabBarCalcTabID(ImGuiTabBar* tab_bar, const char* label)
 {
     if (tab_bar->Flags & ImGuiTabBarFlags_DockNode)
     {
-        ImGuiID id = ImHashStr(label, 0);
+        ImGuiID id = ImHashStr(label);
         KeepAliveID(id);
         return id;
     }