InputText/IO: Added WordMovementUsesAltKey , ShortcutsUseSuperKey for OS X Compatible behavior (#473)

imgui.cpp

@@ -787,6 +787,12 @@ ImGuiIO::ImGuiIO()
     GetClipboardTextFn = GetClipboardTextFn_DefaultImpl;   // Platform dependent default implementations
     SetClipboardTextFn = SetClipboardTextFn_DefaultImpl;
     ImeSetInputScreenPosFn = ImeSetInputScreenPosFn_DefaultImpl;
+
+    // Set OS X style defaults based on __APPLE__ compile time flag
+#ifdef __APPLE__
+    WordMovementUsesAltKey = true;      // Text editing cursor movement using Alt instead of Ctrl
+    ShortcutsUseSuperKey = true;        // Shortcuts using Cmd/Super instead of Ctrl
+#endif
 }
 
 // Pass in translated ASCII characters for text input.
@@ -7320,6 +7326,7 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
     const bool is_ctrl_down = io.KeyCtrl;
     const bool is_shift_down = io.KeyShift;
     const bool is_alt_down = io.KeyAlt;
+    const bool is_super_down = io.KeySuper;
     const bool focus_requested = FocusableItemRegister(window, g.ActiveId == id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
     const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
     const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
@@ -7449,9 +7456,11 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
         // Handle various key-presses
         bool cancel_edit = false;
         const int k_mask = (is_shift_down ? STB_TEXTEDIT_K_SHIFT : 0);
-        const bool is_ctrl_only = is_ctrl_down && !is_alt_down && !is_shift_down;
-        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDLEFT | k_mask : STB_TEXTEDIT_K_LEFT | k_mask); }
-        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDRIGHT | k_mask  : STB_TEXTEDIT_K_RIGHT | k_mask); }
+        const bool is_shortcutkey_only = (io.ShortcutsUseSuperKey ? (is_super_down && !is_alt_down && !is_shift_down && !is_ctrl_down) : (is_ctrl_down && !is_alt_down && !is_shift_down && !is_super_down));
+        const bool is_wordmove_key_down = (io.WordMovementUsesAltKey ? io.KeyAlt : io.KeyCtrl);
+
+        if (IsKeyPressedMap(ImGuiKey_LeftArrow))                        { edit_state.OnKeyPressed(is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT | k_mask : STB_TEXTEDIT_K_LEFT | k_mask); }
+        else if (IsKeyPressedMap(ImGuiKey_RightArrow))                  { edit_state.OnKeyPressed(is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT | k_mask  : STB_TEXTEDIT_K_RIGHT | k_mask); }
         else if (is_multiline && IsKeyPressedMap(ImGuiKey_UpArrow))     { if (is_ctrl_down) SetWindowScrollY(draw_window, draw_window->Scroll.y - g.FontSize); else edit_state.OnKeyPressed(STB_TEXTEDIT_K_UP | k_mask); }
         else if (is_multiline && IsKeyPressedMap(ImGuiKey_DownArrow))   { if (is_ctrl_down) SetWindowScrollY(draw_window, draw_window->Scroll.y + g.FontSize); else edit_state.OnKeyPressed(STB_TEXTEDIT_K_DOWN| k_mask); }
         else if (IsKeyPressedMap(ImGuiKey_Home))                        { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
@@ -7479,11 +7488,11 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
             if (InputTextFilterCharacter(&c, flags, callback, user_data))
                 edit_state.OnKeyPressed((int)c);
         }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))                              { SetActiveID(0); cancel_edit = true; }
-        else if (is_ctrl_only && IsKeyPressedMap(ImGuiKey_Z) && is_editable)    { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UNDO); edit_state.ClearSelection(); }
-        else if (is_ctrl_only && IsKeyPressedMap(ImGuiKey_Y) && is_editable)    { edit_state.OnKeyPressed(STB_TEXTEDIT_K_REDO); edit_state.ClearSelection(); }
-        else if (is_ctrl_only && IsKeyPressedMap(ImGuiKey_A))                   { edit_state.SelectAll(); edit_state.CursorFollow = true; }
-        else if (is_ctrl_only && !is_password && ((IsKeyPressedMap(ImGuiKey_X) && is_editable) || IsKeyPressedMap(ImGuiKey_C)) && (!is_multiline || edit_state.HasSelection()))
+        else if (IsKeyPressedMap(ImGuiKey_Escape))                                     { SetActiveID(0); cancel_edit = true; }
+        else if (is_shortcutkey_only && IsKeyPressedMap(ImGuiKey_Z) && is_editable)    { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UNDO); edit_state.ClearSelection(); }
+        else if (is_shortcutkey_only && IsKeyPressedMap(ImGuiKey_Y) && is_editable)    { edit_state.OnKeyPressed(STB_TEXTEDIT_K_REDO); edit_state.ClearSelection(); }
+        else if (is_shortcutkey_only && IsKeyPressedMap(ImGuiKey_A))                   { edit_state.SelectAll(); edit_state.CursorFollow = true; }
+        else if (is_shortcutkey_only && !is_password && ((IsKeyPressedMap(ImGuiKey_X) && is_editable) || IsKeyPressedMap(ImGuiKey_C)) && (!is_multiline || edit_state.HasSelection()))
         {
             // Cut, Copy
             const bool cut = IsKeyPressedMap(ImGuiKey_X);
@@ -7505,7 +7514,7 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
                 stb_textedit_cut(&edit_state, &edit_state.StbState);
             }
         }
-        else if (is_ctrl_only && IsKeyPressedMap(ImGuiKey_V) && is_editable)
+        else if (is_shortcutkey_only && IsKeyPressedMap(ImGuiKey_V) && is_editable)
         {
             // Paste
             if (g.IO.GetClipboardTextFn)

imgui.h

@@ -708,6 +708,10 @@ struct ImGuiIO
     ImVec2        DisplayVisibleMin;        // <unset> (0.0f,0.0f)  // If you use DisplaySize as a virtual space larger than your screen, set DisplayVisibleMin/Max to the visible area.
     ImVec2        DisplayVisibleMax;        // <unset> (0.0f,0.0f)  // If the values are the same, we defaults to Min=(0.0f) and Max=DisplaySize
 
+	// Advanced/subtle behaviors
+    bool          WordMovementUsesAltKey;   // = defined(__APPLE__) // OS X style: Text editing cursor movement using Alt instead of Ctrl
+    bool          ShortcutsUseSuperKey;     // = defined(__APPLE__) // OS X style: Shortcuts using Cmd/Super instead of Ctrl
+
     //------------------------------------------------------------------
     // User Functions
     //------------------------------------------------------------------