ImStr: Support running under test framework.

Author: rokups

imgui.cpp

@@ -2905,7 +2905,8 @@ ImGuiID ImGuiWindow::GetID(ImStr str)
     ImGui::KeepAliveID(id);
 #ifdef IMGUI_ENABLE_TEST_ENGINE
     ImGuiContext& g = *GImGui;
-    IMGUI_TEST_ENGINE_ID_INFO2(id, ImGuiDataType_String, str, str_end);
+    IM_IMSTR_ENSURE_HAS_END(str);
+    IMGUI_TEST_ENGINE_ID_INFO2(id, ImGuiDataType_String, str.Begin, str.End);
 #endif
     return id;
 }
@@ -2940,7 +2941,8 @@ ImGuiID ImGuiWindow::GetIDNoKeepAlive(ImStr str)
     ImGuiID id = ImHashStr(str, seed);
 #ifdef IMGUI_ENABLE_TEST_ENGINE
     ImGuiContext& g = *GImGui;
-    IMGUI_TEST_ENGINE_ID_INFO2(id, ImGuiDataType_String, str, str_end);
+    IM_IMSTR_ENSURE_HAS_END(str);
+    IMGUI_TEST_ENGINE_ID_INFO2(id, ImGuiDataType_String, str.Begin, str.End);
 #endif
     return id;
 }

imgui.h

@@ -235,6 +235,7 @@ struct ImVec4
 #define IM_IMSTR_ENSURE_HAS_END(s)  if (s.End == NULL) s.End = s.Begin + strlen(s.Begin)
 
 // String view class.
+#define IMGUI_HAS_IMSTR 1
 struct ImStr
 {
     const char* Begin;

imgui_internal.h

@@ -2101,7 +2101,7 @@ IMGUI_API void              ImFontAtlasBuildMultiplyRectAlpha8(const unsigned ch
 
 #ifdef IMGUI_ENABLE_TEST_ENGINE
 extern void                 ImGuiTestEngineHook_ItemAdd(ImGuiContext* ctx, const ImRect& bb, ImGuiID id);
-extern void                 ImGuiTestEngineHook_ItemInfo(ImGuiContext* ctx, ImGuiID id, const char* label, ImGuiItemStatusFlags flags);
+extern void                 ImGuiTestEngineHook_ItemInfo(ImGuiContext* ctx, ImGuiID id, ImStr label, ImGuiItemStatusFlags flags);
 extern void                 ImGuiTestEngineHook_IdInfo(ImGuiContext* ctx, ImGuiDataType data_type, ImGuiID id, const void* data_id);
 extern void                 ImGuiTestEngineHook_IdInfo(ImGuiContext* ctx, ImGuiDataType data_type, ImGuiID id, const void* data_id, const void* data_id_end);
 extern void                 ImGuiTestEngineHook_Log(ImGuiContext* ctx, const char* fmt, ...);