Nav: Made Enter key submit the same type of Activation event as Space key. (#5606)

Instead of adding NavActivateInputId support in ButtonBehavior() started untangling the mess.

docs/CHANGELOG.txt

@@ -47,6 +47,10 @@ Breaking Changes:
 
 Other changes:
 
+- Nav: Made Enter key submit the same type of Activation event as Space key,
+  allowing to press buttons with Enter. (#5606)
+  (Enter emulates a "prefer text input" activation vs.
+   Space emulates a "prefer tweak" activation which is to closer to gamepad controls).
 - Drag and Drop: Fixed handling of overlapping targets when smaller one is submitted
   before and can accept the same data type. (#6183).
 - Drag and Drop: Clear drag and drop state as soon as delivery is accepted in order to

imgui.cpp

@@ -46,7 +46,7 @@ DOCUMENTATION
   - GETTING STARTED WITH INTEGRATING DEAR IMGUI IN YOUR CODE/ENGINE
   - HOW A SIMPLE APPLICATION MAY LOOK LIKE
   - HOW A SIMPLE RENDERING FUNCTION MAY LOOK LIKE
-  - USING GAMEPAD/KEYBOARD NAVIGATION CONTROLS
+  - USING KEYBOARD/GAMEPAD NAVIGATION CONTROLS
 - API BREAKING CHANGES (read me when you update!)
 - FREQUENTLY ASKED QUESTIONS (FAQ)
   - Read all answers online: https://www.dearimgui.org/faq, or in docs/FAQ.md (with a Markdown viewer)
@@ -344,13 +344,14 @@ CODE
     }
 
 
- USING GAMEPAD/KEYBOARD NAVIGATION CONTROLS
+ USING KEYBOARD/GAMEPAD NAVIGATION CONTROLS
  ------------------------------------------
- - The gamepad/keyboard navigation is fairly functional and keeps being improved.
+ - The keyboard/gamepad navigation is fairly functional and keeps being improved.
  - Gamepad support is particularly useful to use Dear ImGui on a console system (e.g. PlayStation, Switch, Xbox) without a mouse!
  - The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable.
  - Keyboard:
     - Application: Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable.
+    - Arrow keys to move. Space or Enter to activate (on a slider/drag: Space will tweak with arrow, Enter will input text).
     - When keyboard navigation is active (io.NavActive + ImGuiConfigFlags_NavEnableKeyboard),
       the io.WantCaptureKeyboard flag will be set. For more advanced uses, you may want to read from:
        - io.NavActive: true when a window is focused and it doesn't have the ImGuiWindowFlags_NoNavInputs flag set.
@@ -3765,7 +3766,7 @@ void ImGui::SetActiveID(ImGuiID id, ImGuiWindow* window)
     if (id)
     {
         g.ActiveIdIsAlive = id;
-        g.ActiveIdSource = (g.NavActivateId == id || g.NavActivateInputId == id || g.NavJustMovedToId == id) ? (ImGuiInputSource)ImGuiInputSource_Nav : ImGuiInputSource_Mouse;
+        g.ActiveIdSource = (g.NavActivateId == id || g.NavJustMovedToId == id) ? (ImGuiInputSource)ImGuiInputSource_Nav : ImGuiInputSource_Mouse;
     }
 
     // Clear declaration of inputs claimed by the widget
@@ -11074,7 +11075,7 @@ static void ImGui::NavUpdate()
     NavUpdateCancelRequest();
 
     // Process manual activation request
-    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavActivateInputId = 0;
+    g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = 0;
     g.NavActivateFlags = ImGuiActivateFlags_None;
     if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
     {
@@ -11089,12 +11090,12 @@ static void ImGui::NavUpdate()
         }
         if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && input_pressed)
         {
-            g.NavActivateInputId = g.NavId;
+            g.NavActivateId = g.NavId;
             g.NavActivateFlags = ImGuiActivateFlags_PreferInput;
         }
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && (activate_down || input_down))
             g.NavActivateDownId = g.NavId;
-        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
+        if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && (activate_pressed || input_pressed))
             g.NavActivatePressedId = g.NavId;
     }
     if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
@@ -11106,10 +11107,7 @@ static void ImGui::NavUpdate()
     // FIXME-NAV: Those should eventually be queued (unlike focus they don't cancel each others)
     if (g.NavNextActivateId != 0)
     {
-        if (g.NavNextActivateFlags & ImGuiActivateFlags_PreferInput)
-            g.NavActivateInputId = g.NavNextActivateId;
-        else
-            g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavNextActivateId;
+        g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavNextActivateId;
         g.NavActivateFlags = g.NavNextActivateFlags;
     }
     g.NavNextActivateId = 0;
@@ -13693,7 +13691,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
         DebugLocateItemOnHover(g.NavId);
         Text("NavInputSource: %s", GetInputSourceName(g.NavInputSource));
         Text("NavActive: %d, NavVisible: %d", g.IO.NavActive, g.IO.NavVisible);
-        Text("NavActivateId/DownId/PressedId/InputId: %08X/%08X/%08X/%08X", g.NavActivateId, g.NavActivateDownId, g.NavActivatePressedId, g.NavActivateInputId);
+        Text("NavActivateId/DownId/PressedId: %08X/%08X/%08X", g.NavActivateId, g.NavActivateDownId, g.NavActivatePressedId);
         Text("NavActivateFlags: %04X", g.NavActivateFlags);
         Text("NavDisableHighlight: %d, NavDisableMouseHover: %d", g.NavDisableHighlight, g.NavDisableMouseHover);
         Text("NavFocusScopeId = 0x%08X", g.NavFocusScopeId);

imgui.h

@@ -23,7 +23,7 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM > 12345')
 #define IMGUI_VERSION               "1.89.4 WIP"
-#define IMGUI_VERSION_NUM           18934
+#define IMGUI_VERSION_NUM           18935
 #define IMGUI_HAS_TABLE
 
 /*

imgui_internal.h

@@ -1415,8 +1415,8 @@ struct ImGuiListClipperData
 enum ImGuiActivateFlags_
 {
     ImGuiActivateFlags_None                 = 0,
-    ImGuiActivateFlags_PreferInput          = 1 << 0,       // Favor activation that requires keyboard text input (e.g. for Slider/Drag). Default if keyboard is available.
-    ImGuiActivateFlags_PreferTweak          = 1 << 1,       // Favor activation for tweaking with arrows or gamepad (e.g. for Slider/Drag). Default if keyboard is not available.
+    ImGuiActivateFlags_PreferInput          = 1 << 0,       // Favor activation that requires keyboard text input (e.g. for Slider/Drag). Default for Enter key.
+    ImGuiActivateFlags_PreferTweak          = 1 << 1,       // Favor activation for tweaking with arrows or gamepad (e.g. for Slider/Drag). Default for Space key and if keyboard is not used.
     ImGuiActivateFlags_TryToPreserveState   = 1 << 2,       // Request widget to preserve state if it can (e.g. InputText will try to preserve cursor/selection)
 };
 
@@ -1833,10 +1833,9 @@ struct ImGuiContext
     ImGuiWindow*            NavWindow;                          // Focused window for navigation. Could be called 'FocusedWindow'
     ImGuiID                 NavId;                              // Focused item for navigation
     ImGuiID                 NavFocusScopeId;                    // Identify a selection scope (selection code often wants to "clear other items" when landing on an item of the selection set)
-    ImGuiID                 NavActivateId;                      // ~~ (g.ActiveId == 0) && (IsKeyPressed(ImGuiKey_Space) || IsKeyPressed(ImGuiKey_NavGamepadActivate)) ? NavId : 0, also set when calling ActivateItem()
-    ImGuiID                 NavActivateDownId;                  // ~~ IsKeyDown(ImGuiKey_Space) || IsKeyDown(ImGuiKey_NavGamepadActivate) ? NavId : 0
-    ImGuiID                 NavActivatePressedId;               // ~~ IsKeyPressed(ImGuiKey_Space) || IsKeyPressed(ImGuiKey_NavGamepadActivate) ? NavId : 0 (no repeat)
-    ImGuiID                 NavActivateInputId;                 // ~~ IsKeyPressed(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadInput) ? NavId : 0; ImGuiActivateFlags_PreferInput will be set and NavActivateId will be 0.
+    ImGuiID                 NavActivateId;                      // ~~ (g.ActiveId == 0) && (IsKeyPressed(ImGuiKey_Space) || IsKeyDown(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadActivate)) ? NavId : 0, also set when calling ActivateItem()
+    ImGuiID                 NavActivateDownId;                  // ~~ IsKeyDown(ImGuiKey_Space) || IsKeyDown(ImGuiKey_Enter) || IsKeyDown(ImGuiKey_NavGamepadActivate) ? NavId : 0
+    ImGuiID                 NavActivatePressedId;               // ~~ IsKeyPressed(ImGuiKey_Space) || IsKeyPressed(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadActivate) ? NavId : 0 (no repeat)
     ImGuiActivateFlags      NavActivateFlags;
     ImGuiID                 NavJustMovedToId;                   // Just navigated to this id (result of a successfully MoveRequest).
     ImGuiID                 NavJustMovedToFocusScopeId;         // Just navigated to this focus scope id (result of a successfully MoveRequest).
@@ -2074,7 +2073,7 @@ struct ImGuiContext
         BeginMenuCount = 0;
 
         NavWindow = NULL;
-        NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = NavActivateInputId = 0;
+        NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = 0;
         NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
         NavActivateFlags = NavNextActivateFlags = ImGuiActivateFlags_None;
         NavJustMovedToKeyMods = ImGuiMod_None;
@@ -3190,7 +3189,7 @@ namespace ImGui
     // Refactored focus/nav/tabbing system in 1.82 and 1.84. If you have old/custom copy-and-pasted widgets that used FocusableItemRegister():
     //  (Old) IMGUI_VERSION_NUM  < 18209: using 'ItemAdd(....)'                              and 'bool tab_focused = FocusableItemRegister(...)'
     //  (Old) IMGUI_VERSION_NUM >= 18209: using 'ItemAdd(..., ImGuiItemAddFlags_Focusable)'  and 'bool tab_focused = (GetItemStatusFlags() & ImGuiItemStatusFlags_Focused) != 0'
-    //  (New) IMGUI_VERSION_NUM >= 18413: using 'ItemAdd(..., ImGuiItemFlags_Inputable)'     and 'bool tab_focused = (GetItemStatusFlags() & ImGuiItemStatusFlags_FocusedTabbing) != 0 || g.NavActivateInputId == id' (WIP)
+    //  (New) IMGUI_VERSION_NUM >= 18413: using 'ItemAdd(..., ImGuiItemFlags_Inputable)'     and 'bool tab_focused = (GetItemStatusFlags() & ImGuiItemStatusFlags_FocusedTabbing) != 0 || (g.NavActivateId == id && (g.NavActivateFlags & ImGuiActivateFlags_PreferInput))' (WIP)
     // Widget code are simplified as there's no need to call FocusableItemUnregister() while managing the transition from regular widget to TempInputText()
     inline bool     FocusableItemRegister(ImGuiWindow* window, ImGuiID id)              { IM_ASSERT(0); IM_UNUSED(window); IM_UNUSED(id); return false; } // -> pass ImGuiItemAddFlags_Inputable flag to ItemAdd()
     inline void     FocusableItemUnregister(ImGuiWindow* window)                        { IM_ASSERT(0); IM_UNUSED(window); }                              // -> unnecessary: TempInputText() uses ImGuiInputTextFlags_MergedItem

imgui_widgets.cpp

@@ -610,10 +610,11 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
         bool nav_activated_by_inputs = (g.NavActivatePressedId == id);
         if (!nav_activated_by_inputs && (flags & ImGuiButtonFlags_Repeat))
         {
-            // Avoid pressing both keys from triggering double amount of repeat events
+            // Avoid pressing multiple keys from triggering excessive amount of repeat events
             const ImGuiKeyData* key1 = GetKeyData(ImGuiKey_Space);
-            const ImGuiKeyData* key2 = GetKeyData(ImGuiKey_NavGamepadActivate);
-            const float t1 = ImMax(key1->DownDuration, key2->DownDuration);
+            const ImGuiKeyData* key2 = GetKeyData(ImGuiKey_Enter);
+            const ImGuiKeyData* key3 = GetKeyData(ImGuiKey_NavGamepadActivate);
+            const float t1 = ImMax(ImMax(key1->DownDuration, key2->DownDuration), key3->DownDuration);
             nav_activated_by_inputs = CalcTypematicRepeatAmount(t1 - g.IO.DeltaTime, t1, g.IO.KeyRepeatDelay, g.IO.KeyRepeatRate) > 0;
         }
         if (nav_activated_by_code || nav_activated_by_inputs)
@@ -2411,18 +2412,18 @@ bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* p_data,
         const bool input_requested_by_tabbing = temp_input_allowed && (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_FocusedByTabbing) != 0;
         const bool clicked = hovered && IsMouseClicked(0, id);
         const bool double_clicked = (hovered && g.IO.MouseClickedCount[0] == 2 && TestKeyOwner(ImGuiKey_MouseLeft, id));
-        const bool make_active = (input_requested_by_tabbing || clicked || double_clicked || g.NavActivateId == id || g.NavActivateInputId == id);
+        const bool make_active = (input_requested_by_tabbing || clicked || double_clicked || g.NavActivateId == id);
         if (make_active && (clicked || double_clicked))
             SetKeyOwner(ImGuiKey_MouseLeft, id);
         if (make_active && temp_input_allowed)
-            if (input_requested_by_tabbing || (clicked && g.IO.KeyCtrl) || double_clicked || g.NavActivateInputId == id)
+            if (input_requested_by_tabbing || (clicked && g.IO.KeyCtrl) || double_clicked || (g.NavActivateId == id && (g.NavActivateFlags & ImGuiActivateFlags_PreferInput)))
                 temp_input_is_active = true;
 
         // (Optional) simple click (without moving) turns Drag into an InputText
         if (g.IO.ConfigDragClickToInputText && temp_input_allowed && !temp_input_is_active)
             if (g.ActiveId == id && hovered && g.IO.MouseReleased[0] && !IsMouseDragPastThreshold(0, g.IO.MouseDragThreshold * DRAG_MOUSE_THRESHOLD_FACTOR))
             {
-                g.NavActivateId = g.NavActivateInputId = id;
+                g.NavActivateId = id;
                 g.NavActivateFlags = ImGuiActivateFlags_PreferInput;
                 temp_input_is_active = true;
             }
@@ -3003,11 +3004,11 @@ bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* p_dat
         // Tabbing or CTRL-clicking on Slider turns it into an input box
         const bool input_requested_by_tabbing = temp_input_allowed && (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_FocusedByTabbing) != 0;
         const bool clicked = hovered && IsMouseClicked(0, id);
-        const bool make_active = (input_requested_by_tabbing || clicked || g.NavActivateId == id || g.NavActivateInputId == id);
+        const bool make_active = (input_requested_by_tabbing || clicked || g.NavActivateId == id);
         if (make_active && clicked)
             SetKeyOwner(ImGuiKey_MouseLeft, id);
         if (make_active && temp_input_allowed)
-            if (input_requested_by_tabbing || (clicked && g.IO.KeyCtrl) || g.NavActivateInputId == id)
+            if (input_requested_by_tabbing || (clicked && g.IO.KeyCtrl) || (g.NavActivateId == id && (g.NavActivateFlags & ImGuiActivateFlags_PreferInput)))
                 temp_input_is_active = true;
 
         if (make_active && !temp_input_is_active)
@@ -3165,7 +3166,7 @@ bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType d
 
     const bool hovered = ItemHoverable(frame_bb, id);
     const bool clicked = hovered && IsMouseClicked(0, id);
-    if (clicked || g.NavActivateId == id || g.NavActivateInputId == id)
+    if (clicked || g.NavActivateId == id)
     {
         if (clicked)
             SetKeyOwner(ImGuiKey_MouseLeft, id);
@@ -4092,7 +4093,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
     ImGuiInputTextState* state = GetInputTextState(id);
 
     const bool input_requested_by_tabbing = (item_status_flags & ImGuiItemStatusFlags_FocusedByTabbing) != 0;
-    const bool input_requested_by_nav = (g.ActiveId != id) && ((g.NavActivateInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_Keyboard));
+    const bool input_requested_by_nav = (g.ActiveId != id) && ((g.NavActivateId == id) && ((g.NavActivateFlags & ImGuiActivateFlags_PreferInput) || (g.NavInputSource == ImGuiInputSource_Keyboard)));
 
     const bool user_clicked = hovered && io.MouseClicked[0];
     const bool user_scroll_finish = is_multiline && state != NULL && g.ActiveId == 0 && g.ActiveIdPreviousFrame == GetWindowScrollbarID(draw_window, ImGuiAxis_Y);