Diff: menbed/menbedNavigator.cpp

Revision:

2:66e4ebaba5df

Parent:

1:4f46d81502aa

Child:

3:ec80bb6ff5da

--- a/menbed/menbedNavigator.cpp	Wed Sep 05 07:22:44 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,477 +0,0 @@
-#include "mbed.h"
-#include "include/menbedNavigator.h"
-#include "include/menbedButtonEvent.h"
-#include "include/menbedMenuMessage.h"
-#include "include/menbedMenu.h"
-#include <cstdio>
-
-extern void toggleLed3();
-
-MenbedNavigator::MenbedNavigator(MenbedMenu *rootMenu,  
-        MenbedDisplayer *displayer) :
-    activeMenu(rootMenu), displayer(displayer)
-{
-    selectedItemIndex = -1;
-    topOfScreenItemIndex = 0;
-    paramEditMode = false;
-    
-    numLines = displayer->getDisplay()->getLines();
-    lineLength = displayer->getDisplay()->getLineLength();
-}
-
-void MenbedNavigator::updateDisplay()
-{
-    MenbedMenuMessage menuMsg (numLines, lineLength);
-
-    printMenu (menuMsg.text);
-    menuMsg.showUpArrow = (topOfScreenItemIndex >= 1);
-    menuMsg.showDownArrow = (topOfScreenItemIndex + numLines < (int)(activeMenu->menuItems.size()));
-    
-    displayer->update (&menuMsg);
-}
-
-
-void MenbedNavigator::handleButtonEvent (MenbedButtonEvent buttonEvent)
-{
-    numButtons = buttonEvent.numButtons;
-
-    switch (buttonEvent.name)
-    {
-    case MenbedButtonEvent::ButtonSelect: // Select
-        if (!paramEditMode && (buttonEvent.action == 
-                MenbedButtonEvent::BUTTON_ACTION_RELEASED_SHORT))
-            selectItem();
-        else if (paramEditMode && (buttonEvent.action ==
-                MenbedButtonEvent::BUTTON_ACTION_RELEASED_SHORT))
-            saveParam();
-        else if ((numButtons < 4) && 
-            paramEditMode && (buttonEvent.action == 
-                MenbedButtonEvent::BUTTON_ACTION_HELD_LONG))
-            restoreParam();
-        else if ((numButtons < 4) && !paramEditMode && 
-            (buttonEvent.action ==
-                MenbedButtonEvent::BUTTON_ACTION_HELD_LONG))
-            gotoParent();
-        break;
-        
-    case MenbedButtonEvent::ButtonDown:
-        if (paramEditMode && 
-                (buttonEvent.action == MenbedButtonEvent::BUTTON_ACTION_PUSHED))
-            decParam();
-        else if (!paramEditMode && 
-                (buttonEvent.action == MenbedButtonEvent::BUTTON_ACTION_PUSHED))
-            moveDown();
-        break;
-        
-    case MenbedButtonEvent::ButtonUp:
-        if (numButtons > 2)
-        {
-            if (paramEditMode && 
-                    (buttonEvent.action == MenbedButtonEvent::BUTTON_ACTION_PUSHED))
-                incParam();
-            else if (!paramEditMode &&
-                    (buttonEvent.action == MenbedButtonEvent::BUTTON_ACTION_PUSHED))
-                moveUp();
-        }
-        break;
-        
-    case MenbedButtonEvent::ButtonCancel:
-        if (numButtons > 3)
-        {
-            if (paramEditMode && 
-                    (buttonEvent.action == MenbedButtonEvent::BUTTON_ACTION_PUSHED))
-                restoreParam();
-            else if (!paramEditMode && 
-                    (buttonEvent.action == MenbedButtonEvent::BUTTON_ACTION_PUSHED))
-                gotoParent();
-        }
-        break;
-    }
-
-    updateDisplay();
-    //menuRefresh_refreshed();
-}
-
-
-void MenbedNavigator::selectItem()
-{
-    MenbedMenu **childMenuPtr;
-    MenbedMenu *childMenu;
-
-    if ((selectedItemIndex < 0) || 
-            (selectedItemIndex >= (int)(activeMenu->menuItems.size())))
-         return;
-
-    // If it exists, execute the function associated with the menu item
-    if (activeMenu->menuItems[selectedItemIndex]->selFcn != NULL)
-        activeMenu->menuItems[selectedItemIndex]->selFcn();
-
-    // Show the child menu associated with the menu item.  Initially, the first
-    // item in the child menu is placed at the top of the screen, but is it
-    // left unselected.
-    childMenuPtr = activeMenu->menuItems[selectedItemIndex]->childMenu;
-    if (childMenuPtr != NULL)
-    {
-        childMenu = *(activeMenu->menuItems[selectedItemIndex]->childMenu);
-    
-        if (!activeMenu->menuItems[selectedItemIndex]->childMenuIsAncestor)
-        {
-            childMenu->parentMenu = activeMenu;
-            childMenu->parentSelectedItemIndex = selectedItemIndex;
-            childMenu->parentTopOfScreenItemIndex = topOfScreenItemIndex;
-        }
-        else
-            childMenu->parentMenu = NULL;
-
-        activeMenu = childMenu;
-        topOfScreenItemIndex = 0;
-        selectedItemIndex = -1;       
-    }
-    // Otherwise, if the current menu item has a parameter that can be modified,
-    // we switch to the parameter editing mode.
-    else if ((activeMenu->menuItems[selectedItemIndex]->param != NULL) &&
-            (activeMenu->menuItems[selectedItemIndex]->param->inc() != 0))
-    {
-        // All incrementing and decrementing of the parameter actually happens
-        // to a shadow variable in the param structure named tempValue.  The
-        // parameter value used by the other parts of the system is not updated
-        // until the user is done editing the parameter.
-        activeMenu->menuItems[selectedItemIndex]->param->initVal =
-                activeMenu->menuItems[selectedItemIndex]->param->getVal();
-        activeMenu->menuItems[selectedItemIndex]->param->tempVal =
-                activeMenu->menuItems[selectedItemIndex]->param->initVal;
-        paramEditMode = true;
-    }
-}
-
-
-void MenbedNavigator::gotoParent()
-{
-    if (activeMenu->parentMenu == NULL)
-        return;
-
-    selectedItemIndex = activeMenu->parentSelectedItemIndex;
-    topOfScreenItemIndex = activeMenu->parentTopOfScreenItemIndex;
-    activeMenu = activeMenu->parentMenu;
-}
-
-
-void MenbedNavigator::moveUp()
-{
-    // If we're already at the top of the menu, do nothing
-    if (selectedItemIndex <= -1)
-        return;
-    // If the top item of the menu is already selected, we send a NOP message
-    // which deselects the top line and displays the down arrow if the menu
-    // contains more items than can fit on the screen.  In effect, this allows
-    // the user to deselect all menu items which adds a nice look to the system.
-    else if (selectedItemIndex == 0)
-        selectedItemIndex = -1;
-    // If the currently selected menu item is the also the one at the top of the
-    // screen, we need to scroll the screen down and add the item above the
-    // currently selected one to the top of the screen.
-    else if (selectedItemIndex == topOfScreenItemIndex)
-    {
-        selectedItemIndex--;
-        topOfScreenItemIndex--;
-    }
-    // The selected item is not the top item on the screen.  All we need to do
-    // is select the item above the currently selected item.
-    else
-        selectedItemIndex--;
-}
-
-
-
-void MenbedNavigator::moveDown()
-{
-    // If the last item of the menu is already selected, our behavior depends
-    // on how many buttons are present.  If there is no up button, we cycle
-    // back to the top of the menu.  Otherwise, if an up button is present,
-    // we do nothing.
-    if (selectedItemIndex >= ((int)(activeMenu->menuItems.size()) - 1))
-    {
-        if (numButtons < 3)
-        {
-            selectedItemIndex = -1;
-            topOfScreenItemIndex = 0;
-        }
-        else
-            ;
-    }
-    // If the menu item displayed at the bottom of the screen is already
-    // selected, we will need to scroll the screen up to make room for a new
-    // line at the bottom of the screen.
-    else if (selectedItemIndex ==
-            (topOfScreenItemIndex + numLines - 1))
-    {
-        selectedItemIndex++;
-        topOfScreenItemIndex++;
-    }
-    // Otherwise, if the currently selected menu item is now the one displayed
-    // at the bottom of the screen, we simply change which of the visible items
-    // is highlighted.
-    else
-        selectedItemIndex++;
-        
-}
-
-
-void MenbedNavigator::incParam()
-{
-    float inc;
-    float tempVal;
-
-    if (paramEditMode != true)
-        return;
-
-    inc = activeMenu->menuItems[selectedItemIndex]->param->inc();
-
-    // Initialize our own local copy of the parameter's temporary value.  We do
-    // this so that we can more easily check for violations of the allowed min
-    // and max values.
-    tempVal = activeMenu->menuItems[selectedItemIndex]->param->tempVal;
-    tempVal += inc;
-
-    // Check the bounds on the parameter.
-    if (tempVal > activeMenu->menuItems[selectedItemIndex]->param->max())
-        tempVal = activeMenu->menuItems[selectedItemIndex]->param->max();
-    else if (tempVal < activeMenu->menuItems[selectedItemIndex]->param->min())
-        tempVal = activeMenu->menuItems[selectedItemIndex]->param->min();
-
-    // Assign the local temp. value back to the temporary value in the active
-    // parameter structue.
-    activeMenu->menuItems[selectedItemIndex]->param->tempVal = tempVal;
-
-    // If the parameter is configured to produce live updates, call the
-    // finalValFcn.
-    if (activeMenu->menuItems[selectedItemIndex]->param->liveUpdate())
-        activeMenu->menuItems[selectedItemIndex]->param->setVal(tempVal);
-}
-
-
-void MenbedNavigator::decParam()
-{
-    float inc;
-    float tempVal;
-
-    if (paramEditMode != true)
-        return;
-
-    inc = activeMenu->menuItems[selectedItemIndex]->param->inc();
-
-    // Initialize our own local copy of the parameter's temporary value.  We do
-    // this so that we can more easily check for violations of the allowed min
-    // and max values.
-    tempVal = activeMenu->menuItems[selectedItemIndex]->param->tempVal;
-    tempVal -= inc;
-
-    // Check the bounds on the parameter.
-    if (tempVal > activeMenu->menuItems[selectedItemIndex]->param->max())
-        tempVal = activeMenu->menuItems[selectedItemIndex]->param->max();
-    // If we reach the minimum parameter value when we only have a down button
-    // and not an up button connected to the system, we wrap the parameter
-    // value back around to its maximum.  Otherwise, if there is an up button
-    // present, we peg the parameter at its minimum value.
-    else if (tempVal < activeMenu->menuItems[selectedItemIndex]->param->min())
-    {
-        if (numButtons >= 3)
-            tempVal = activeMenu->menuItems[selectedItemIndex]->param->min();
-        else
-            tempVal = activeMenu->menuItems[selectedItemIndex]->param->max();
-    }
-
-    // Assign the local temp. value back to the temporary value in the active
-    // parameter structue.
-    activeMenu->menuItems[selectedItemIndex]->param->tempVal = tempVal;
-
-    // If the parameter is configured to produce live updates, call the
-    // finalValFcn.
-    if (activeMenu->menuItems[selectedItemIndex]->param->liveUpdate())
-        activeMenu->menuItems[selectedItemIndex]->param->setVal(tempVal);
-}
-
-
-void MenbedNavigator::saveParam()
-{
-    // Save the changes made the shadow variable tempValue to the real parameter
-    // value that is used by the rest of the application.
-    activeMenu->menuItems[selectedItemIndex]->param->setVal (
-            activeMenu->menuItems[selectedItemIndex]->param->tempVal
-            );
-    paramEditMode = false;
-}
-
-
-void MenbedNavigator::restoreParam()
-{
-    // Revert any changes made the parameter by calling the finalValFcn with
-    // the initVal that was stored when we first began editing this parameter.
-    activeMenu->menuItems[selectedItemIndex]->param->setVal(
-            activeMenu->menuItems[selectedItemIndex]->param->initVal
-            );
-    paramEditMode = false;
-}
-
-
-void MenbedNavigator::printMenu (char *menuStr)
-{
-    uint8_t i;
-    char *lineStr = new char[lineLength];
-    bool itemSel;
-
-    menuStr[0] = '\0';
-
-    for (i=topOfScreenItemIndex; i<topOfScreenItemIndex + numLines; i++)
-    {
-        // Make sure we don't try to print more menu items than exist in the
-        // active menu.
-        if (i > ((int)activeMenu->menuItems.size() - 1))
-        {
-            strcat (menuStr, "\n");
-            continue;
-        }
-
-        itemSel = (i == selectedItemIndex);
-
-        printItem (activeMenu->menuItems[i], lineStr, itemSel,
-                paramEditMode && itemSel);
-
-        strncat (menuStr, lineStr, lineLength);
-        strcat (menuStr, "\n");
-    }
-    
-    delete[] lineStr;
-}
-
-
-void MenbedNavigator::printItem (MenbedMenuItem *item, char *line, bool itemSel,
-        bool paramSel)
-{
-    uint8_t i = 0;
-    int8_t j;
-    char *tempStr = new char[lineLength];
-    char *frontTab, *backTab;
-    char *subStr = new char[lineLength];
-    uint8_t copySize;
-
-    // Clear the line of text
-    line[0] = '\0';
-
-    // Iterate over the element in the array of text strings in the provided
-    // menu item until an empty string is found indicating the end of the text
-    // that should be printed for the current line.  For safety, we assume there
-    // are a maximum of three element in the array: 1) text before the
-    // parameter, 2) the parameter, and 3) text after the parameter.
-    
-    frontTab = item->text;
-    while ((strlen (frontTab) > 0) && (i < 3))
-    {
-        backTab = strchr (frontTab, '\t');
-        if (backTab == NULL)
-        {
-            backTab = frontTab + strlen(frontTab);
-            i = 3; // force our way out of the while loop
-        }
-         
-        copySize = backTab - frontTab;
-        if (copySize >= lineLength)
-            copySize = lineLength - 1;
-            
-        strncpy (subStr, frontTab, copySize);
-        subStr[copySize] = '\0';
-        
-        // If the current string in the array is a printf-style conversion
-        // specifier for a float, we replace it with the parameter value.
-        if (checkConvSpec (subStr))
-        {
-            // If the user is currently editing the parameter, print the value
-            // of the shadow variable tempValue instead of the parameters actual
-            // value.  The tempValue is not copied over to the value field of
-            // the structure until the user is done editing the parameter.  To
-            // show that the parameter is being edited, we highlight the value
-            // by inverting the text.
-            if (paramSel)
-            {
-                snprintf (tempStr, lineLength, subStr, item->param->tempVal);
-
-                // We highlight the parameter by inverting the characters on the
-                // screen.  The menu system only allows the standard (0-127)
-                // ASCII character, so we use the MSB/7th bit of each character
-                // to indicate that it should be inverted when printed on the
-                // screen.
-                for (j=strlen(tempStr) - 1; j>=0; j--)
-                    tempStr[j] |= 0x80;
-
-            }
-            // If the user is not currently editing the parameter, we display
-            // the value pointed to by the value field of the param structure.
-            else
-                snprintf (tempStr, lineLength,
-                        subStr, item->param->getVal());                       
-
-            // Attach the parameter string to the growing line.
-            strncat (line, tempStr, lineLength);
-        }
-        // If the string is not a printf-style conversion specifier for a float,
-        // simply catenate the string with the growing line of text.
-        else
-        {
-            strncat (line, subStr, lineLength);
-        }
-           
-        frontTab = backTab + 1;
-        i++;
-    }
-
-    // Append a space to the very end of the line.  The LCD driver looks to the
-    // last character in the line to determine whether to highlight any
-    // remaining whitespace after the text ends.  This approach causes problems
-    // when the parameter is the last text on the line and we are in parameter
-    // modification mode.  Without the extra space at the end of the line, the
-    // LCD controller will highlight the rest of the line even though it is only
-    // the parameter itself that should be highlighted.
-    strncat (line, " ", lineLength);
-
-    // If the parameter has not been selected for modification but the menu item
-    // is currently selected, we highlight the entire line.  In the menu system,
-    // the only allowable character are the standard ASCII codes (0-127).  We
-    // use the (MSB) 7th bit of every character to indicate whether it should be
-    // highlighted/inverted.
-    if (!paramSel && itemSel)
-    {
-        // Set the MSB of each character to invert it when displayed.
-        for (j = strlen(line) - 1; j>= 0; j--)
-            line[j] |= 0x80;
-    }
-    
-    delete[] tempStr;
-    delete[] subStr;
-}
-
-
-// Returns true if the provided string is a printf-style conversion specifier
-// for a float (conversion character is f, e, E, g, or G).  Otherwise, returns
-// false.
-bool MenbedNavigator::checkConvSpec (const char *s)
-{
-    char lastChar;
-
-    // Conversion specifications must begin with a '%'.
-    if (s[0] != '%')
-        return false;
-
-    // Identify the last last character in the conversion specification
-    lastChar = s[strlen(s) - 1];
-
-    // Check that the last character in the conversion specification is either a
-    // 'f', 'e', 'E', 'g', or 'G'--the conversion specifiers for floats.  If it
-    // is, the conversion specification is probably a valid conversion
-    // specification.
-    if ((lastChar == 'f') || (lastChar == 'e') || (lastChar == 'E') ||
-            (lastChar == 'g') || (lastChar == 'G'))
-        return true;
-
-    // Otherwise, it is not.
-    return false;
-}