New menu system

src/main.cpp

@@ -5,8 +5,9 @@ using namespace daisy;
 int main(void) {
   patch.Init();
   sample_rate = patch.AudioSampleRate();
-  droplet_left = GetDroplet(DropletState::kFull);
   selected_menu = left_menu;
+  droplet_left = GetDroplet(DropletState::kFull);
+ 
   patch.StartAdc();
   patch.StartAudio(AudioThrough);
   

src/menu.cpp

@@ -6,6 +6,14 @@ Menu::Menu(DaisyPatch* m_patch,
   patch = m_patch;
   state = m_state;
   manager = m_manager;
+
+  head = new MenuItem(MenuState::kSplit, "Split");
+  head->AddItemEnd(new MenuItem(MenuState::kChange, "Right"));
+  head->AddItemEnd(new MenuItem(MenuState::kVCO, "VCO"));
+  head->AddItemEnd(new MenuItem(MenuState::kNoise, "Noise"));
+  selected = head;
+  buffer = selected;
+  highlighted = selected;
 }
 const std::string MENU_ITEMS[] = {"Split",
   "Change",
@@ -15,7 +23,6 @@ const int MENU_SIZE = sizeof(MENU_ITEMS)/sizeof(*MENU_ITEMS);
 const int MAX_CHAR_LENGTH = 15;
 const int MENU_X[] = {0,  5,  10,  5,  0};
 const int MENU_Y[] = {0, 11,  22, 41, 52};
-int selectedMenuItem = 0;
 
 bool Menu::InMenu() {
   return this->inMenu;
@@ -25,32 +32,6 @@ void Menu::SetInMenu(bool menuState) {
   inMenu = menuState;
 }
 
-void Menu::FilterMenuSelection() {
-  if (selectedMenuItem >= MENU_SIZE) {
-    selectedMenuItem = MENU_SIZE - 1;
-  } else if (selectedMenuItem < 0) {
-    selectedMenuItem = 0;
-  }
-}
-
-std::string Menu::FilterMenuText(int position) {
-  //return std::to_string(position);
-  if (position >= MENU_SIZE || position < 0) {
-    return "";
-  } else {
-    if (ConvertState(position) == MenuState::kSplit) {
-      if (manager->GetSplitMode()) {
-	return "Merge";
-      } else {
-	return "Split";
-      }
-    } else if (ConvertState(position) == MenuState::kChange) {
-      return manager->OtherStateName(state);
-    }
-    return MENU_ITEMS[position];
-  }
-}
-
 void Menu::CreateMenuItem(std::string text,
 			  int position,
 			  bool highlighted) {
@@ -67,26 +48,60 @@ void Menu::CreateMenuItem(std::string text,
 }
 
 void Menu::ProcessMenuOled() {
-  CreateMenuItem(FilterMenuText(selectedMenuItem-2), 1, false);
-  CreateMenuItem(FilterMenuText(selectedMenuItem-1), 2, false);
-  CreateMenuItem(FilterMenuText(selectedMenuItem),   3, true);
-  CreateMenuItem(FilterMenuText(selectedMenuItem+1), 4, false);
-  CreateMenuItem(FilterMenuText(selectedMenuItem+2), 5, false);
+  MenuItem* ptr;
+  // Item 3 Highlighted
+  CreateMenuItem(highlighted->GetTitle(),   3, true);
+
+  // Item 2
+  ptr = highlighted->GetPrevious();
+  if (ptr == NULL) {
+    CreateMenuItem("", 2, false);
+  } else {
+    CreateMenuItem(ptr->GetTitle(), 2, false);
+    ptr = ptr->GetPrevious();
+  }
+    // Item 1
+  if (ptr == NULL) {
+    CreateMenuItem("", 1, false);
+  } else {
+    CreateMenuItem(ptr->GetTitle(), 1, false);
+  }
+
+  // Item 4
+  ptr = highlighted->GetNext();
+  if (ptr == NULL) {
+    CreateMenuItem("", 4, false);
+  } else {
+    CreateMenuItem(ptr->GetTitle(), 4, false);
+    ptr = ptr->GetNext();
+  }
+
+  // Item 5
+  if (ptr == NULL) {
+    CreateMenuItem("", 5, false);
+  } else {
+    CreateMenuItem(ptr->GetTitle(), 5, false);
+  }
 }
 
 void Menu::UpdateMenuPosition() {
-  selectedMenuItem -= patch->encoder.Increment();
-  FilterMenuSelection();
+  int move = patch->encoder.Increment();
+  if (move < 0) {
+    if (highlighted->GetNextVisible() != NULL) {
+      highlighted = highlighted->GetNextVisible();
+    }
+  } else if (move > 0) {
+    if (highlighted->GetPreviousVisible() != NULL) {
+      highlighted = highlighted->GetPreviousVisible();
+    }
+  }
 }
 
 std::string Menu::SelectedName() {
-  return MENU_ITEMS[selectedMenuItem];
+  return highlighted->GetTitle();
 }
 
 MenuState Menu::GetState() {
-  return ConvertState(selectedMenuItem);
+  return highlighted->GetState();
 }
 
-MenuState Menu::ConvertState(int menu_state) {
-  return static_cast<MenuState>(menu_state);
-}

src/menu.h

@@ -17,6 +17,10 @@ class Menu {
   DaisyPatch* patch;
   DropletManager* manager;
   DropletState state;
+  MenuItem* selected;
+  MenuItem* buffer;
+  MenuItem* highlighted;
+  MenuItem* head;
   bool inMenu = false;
 
   /*
@@ -50,20 +54,6 @@ class Menu {
    */
   void SetInMenu(bool);
 
-  /*
-   * Keeps menu selection within the bounds of the menu's size.
-   */
-  void FilterMenuSelection();
-
-  /*
-   * Returns item name based on given position and if out of the menu
-   * returns a blank string.
-   *
-   * @param position place in the menu
-   * @return menu item name
-   */
-  std::string FilterMenuText(int position);
-
   /*
    * Draws a menu item on screen.
    *

src/menu_item.cpp

@@ -1,6 +1,6 @@
 #include "menu_item.h"
 
-MenuItem::MenuItem(MenuState m_state, char* m_title) {
+MenuItem::MenuItem(MenuState m_state, std::string m_title) {
   state = m_state;
   this->SetTitle(m_title);
   visible = true;
@@ -8,11 +8,11 @@ MenuItem::MenuItem(MenuState m_state, char* m_title) {
   next = NULL;
 }
 
-char* MenuItem::GetTitle() {
+std::string MenuItem::GetTitle() {
   return title;
 }
 
-void MenuItem::SetTitle(char* m_title) {
+void MenuItem::SetTitle(std::string m_title) {
   title = m_title;
 }
 
@@ -61,3 +61,37 @@ void MenuItem::SetVisibility(bool m_visible) {
 void MenuItem::ToggleVisibility() {
   visible = !visible;
 }
+
+MenuState MenuItem::GetState() {
+  return state;
+}
+
+void MenuItem::AddItemBefore(MenuItem* item) {
+  item->SetNext(this);
+  item->SetPrevious(this->GetPrevious());
+  this->SetPrevious(item);
+}
+
+void MenuItem::AddItemAfter(MenuItem* item) {
+  item->SetPrevious(this);
+  item->SetNext(this->GetNext());
+  this->SetNext(item);
+}
+
+void MenuItem::AddItemStart(MenuItem* item) {
+  if (this->GetPrevious() == NULL) {
+    item->SetNext(this);
+    this->SetPrevious(item);
+  } else {
+    this->GetPrevious()->AddItemStart(item);
+  }
+}
+
+void MenuItem::AddItemEnd(MenuItem* item) {
+  if (this->GetNext() == NULL) {
+    item->SetPrevious(this);
+    this->SetNext(item);
+  } else {
+    this->GetNext()->AddItemEnd(item);
+  }
+}

src/menu_item.h

@@ -3,31 +3,33 @@
 #ifndef CASCADE_MENU_ITEM_H_
 #define CASCADE_MENU_ITEM_H_
 
+#include <string>
+
 enum class MenuState {kSplit, kChange, kVCO, kNoise};
 
 class MenuItem {
  private:
   MenuState state;
-  char* title;
+  std::string title;
   bool visible;
   MenuItem* previous;
   MenuItem* next;
  public:
-  MenuItem(MenuState m_state, char* m_title);
+  MenuItem(MenuState m_state, std::string m_title);
   
   /*
    * Returns the title of the menu item.
    * 
    * @return menu item title
    */
-  char* GetTitle();
+  std::string GetTitle();
 
   /*
    * Sets the title for a munu item.
    * 
    * @param menu title
    */
-  void SetTitle(char* m_title);
+  void SetTitle(std::string m_title);
   
   /*
    * Returns the previous menu item.
@@ -88,6 +90,13 @@ class MenuItem {
    * Toggles visibility of menu item.
    */
   void ToggleVisibility();
+
+  MenuState GetState();
+
+  void AddItemBefore(MenuItem* item);
+  void AddItemAfter(MenuItem* item);
+  void AddItemStart(MenuItem* item);
+  void AddItemEnd(MenuItem* item);
 };
 
 #endif // CASCADE_MENU_ITEM_H_