Internals: Removed ImGuiButtonFlags_Disabled (which had inconsistent behavior) in favor of ImGuiItemFlags_Disabled. Selectable()'s ImGuiSelectableFlags_Disabled now uses the later. (#211)

imgui_demo.cpp

@@ -2187,7 +2187,7 @@ static void ShowDemoWindowWidgets()
         const char* item_names[] =
         {
             "Text", "Button", "Button (w/ repeat)", "Checkbox", "SliderFloat", "InputText", "InputFloat",
-            "InputFloat3", "ColorEdit4", "MenuItem", "TreeNode", "TreeNode (w/ double-click)", "Combo", "ListBox"
+            "InputFloat3", "ColorEdit4", "Selectable", "MenuItem", "TreeNode", "TreeNode (w/ double-click)", "Combo", "ListBox"
         };
         static int item_type = 1;
         ImGui::Combo("Item Type", &item_type, item_names, IM_ARRAYSIZE(item_names), IM_ARRAYSIZE(item_names));
@@ -2208,11 +2208,12 @@ static void ShowDemoWindowWidgets()
         if (item_type == 6) { ret = ImGui::InputFloat("ITEM: InputFloat", col4f, 1.0f); }               // Testing +/- buttons on scalar input
         if (item_type == 7) { ret = ImGui::InputFloat3("ITEM: InputFloat3", col4f); }                   // Testing multi-component items (IsItemXXX flags are reported merged)
         if (item_type == 8) { ret = ImGui::ColorEdit4("ITEM: ColorEdit4", col4f); }                     // Testing multi-component items (IsItemXXX flags are reported merged)
-        if (item_type == 9) { ret = ImGui::MenuItem("ITEM: MenuItem"); }                                // Testing menu item (they use ImGuiButtonFlags_PressedOnRelease button policy)
+        if (item_type == 9) { ret = ImGui::Selectable("ITEM: Selectable"); }                            // Testing selectable item
-        if (item_type == 10){ ret = ImGui::TreeNode("ITEM: TreeNode"); if (ret) ImGui::TreePop(); }     // Testing tree node
+        if (item_type == 10){ ret = ImGui::MenuItem("ITEM: MenuItem"); }                                // Testing menu item (they use ImGuiButtonFlags_PressedOnRelease button policy)
-        if (item_type == 11){ ret = ImGui::TreeNodeEx("ITEM: TreeNode w/ ImGuiTreeNodeFlags_OpenOnDoubleClick", ImGuiTreeNodeFlags_OpenOnDoubleClick | ImGuiTreeNodeFlags_NoTreePushOnOpen); } // Testing tree node with ImGuiButtonFlags_PressedOnDoubleClick button policy.
+        if (item_type == 11){ ret = ImGui::TreeNode("ITEM: TreeNode"); if (ret) ImGui::TreePop(); }     // Testing tree node
-        if (item_type == 12){ const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::Combo("ITEM: Combo", &current, items, IM_ARRAYSIZE(items)); }
+        if (item_type == 12){ ret = ImGui::TreeNodeEx("ITEM: TreeNode w/ ImGuiTreeNodeFlags_OpenOnDoubleClick", ImGuiTreeNodeFlags_OpenOnDoubleClick | ImGuiTreeNodeFlags_NoTreePushOnOpen); } // Testing tree node with ImGuiButtonFlags_PressedOnDoubleClick button policy.
-        if (item_type == 13){ const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::ListBox("ITEM: ListBox", &current, items, IM_ARRAYSIZE(items), IM_ARRAYSIZE(items)); }
+        if (item_type == 13){ const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::Combo("ITEM: Combo", &current, items, IM_ARRAYSIZE(items)); }
+        if (item_type == 14){ const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::ListBox("ITEM: ListBox", &current, items, IM_ARRAYSIZE(items), IM_ARRAYSIZE(items)); }
 
         // Display the values of IsItemHovered() and other common item state functions.
         // Note that the ImGuiHoveredFlags_XXX flags can be combined.

imgui_internal.h

@@ -798,7 +798,7 @@ enum ImGuiButtonFlagsPrivate_
     ImGuiButtonFlags_FlattenChildren        = 1 << 11,  // allow interactions even if a child window is overlapping
     ImGuiButtonFlags_AllowItemOverlap       = 1 << 12,  // require previous frame HoveredId to either match id or be null before being usable, use along with SetItemAllowOverlap()
     ImGuiButtonFlags_DontClosePopups        = 1 << 13,  // disable automatically closing parent popup on press // [UNUSED]
-    ImGuiButtonFlags_Disabled               = 1 << 14,  // disable interactions
+    //ImGuiButtonFlags_Disabled             = 1 << 14,  // disable interactions -> use PushDisabled() or ImGuiItemFlags_Disabled
     ImGuiButtonFlags_AlignTextBaseLine      = 1 << 15,  // vertically align button to match text baseline - ButtonEx() only // FIXME: Should be removed and handled by SmallButton(), not possible currently because of DC.CursorPosPrevLine
     ImGuiButtonFlags_NoKeyModifiers         = 1 << 16,  // disable mouse interaction if a key modifier is held
     ImGuiButtonFlags_NoHoldingActiveId      = 1 << 17,  // don't set ActiveId while holding the mouse (ImGuiButtonFlags_PressedOnClick only)

imgui_widgets.cpp

@@ -488,14 +488,6 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = GetCurrentWindow();
 
-    if (flags & ImGuiButtonFlags_Disabled)
-    {
-        if (out_hovered) *out_hovered = false;
-        if (out_held) *out_held = false;
-        if (g.ActiveId == id) ClearActiveID();
-        return false;
-    }
-
     // Default only reacts to left mouse button
     if ((flags & ImGuiButtonFlags_MouseButtonMask_) == 0)
         flags |= ImGuiButtonFlags_MouseButtonDefault_;
@@ -6139,7 +6131,8 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
     }
 
     bool item_add;
-    if (flags & ImGuiSelectableFlags_Disabled)
+    const bool disabled_item = (flags & ImGuiSelectableFlags_Disabled) != 0;
+    if (disabled_item)
     {
         ImGuiItemFlags backup_item_flags = g.CurrentItemFlags;
         g.CurrentItemFlags |= ImGuiItemFlags_Disabled;
@@ -6160,6 +6153,12 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
     if (!item_add)
         return false;
 
+    const bool disabled_global = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0;
+    if (disabled_item && !disabled_global)
+        PushDisabled(true);
+    if (disabled_item || disabled_global)
+        selected = false;
+
     // FIXME: We can standardize the behavior of those two, we could also keep the fast path of override ClipRect + full push on render only,
     // which would be advantageous since most selectable are not selected.
     if (span_all_columns && window->DC.CurrentColumns)
@@ -6172,13 +6171,9 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
     if (flags & ImGuiSelectableFlags_NoHoldingActiveID) { button_flags |= ImGuiButtonFlags_NoHoldingActiveId; }
     if (flags & ImGuiSelectableFlags_SelectOnClick)     { button_flags |= ImGuiButtonFlags_PressedOnClick; }
     if (flags & ImGuiSelectableFlags_SelectOnRelease)   { button_flags |= ImGuiButtonFlags_PressedOnRelease; }
-    if (flags & ImGuiSelectableFlags_Disabled)          { button_flags |= ImGuiButtonFlags_Disabled; }
     if (flags & ImGuiSelectableFlags_AllowDoubleClick)  { button_flags |= ImGuiButtonFlags_PressedOnClickRelease | ImGuiButtonFlags_PressedOnDoubleClick; }
     if (flags & ImGuiSelectableFlags_AllowItemOverlap)  { button_flags |= ImGuiButtonFlags_AllowItemOverlap; }
 
-    if (flags & ImGuiSelectableFlags_Disabled)
-        selected = false;
-
     const bool was_selected = selected;
     bool hovered, held;
     bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
@@ -6228,14 +6223,15 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
     else if (span_all_columns && g.CurrentTable)
         TablePopBackgroundChannel();
 
-    if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, style.Colors[ImGuiCol_TextDisabled]);
     RenderTextClipped(text_min, text_max, label, NULL, &label_size, style.SelectableTextAlign, &bb);
-    if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
 
     // Automatically close popups
     if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_DontClosePopups) && !(g.CurrentItemFlags & ImGuiItemFlags_SelectableDontClosePopup))
         CloseCurrentPopup();
 
+    if (disabled_item && !disabled_global)
+        PopDisabled();
+
     IMGUI_TEST_ENGINE_ITEM_INFO(id, label, window->DC.LastItemStatusFlags);
     return pressed;
 }