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lib/obp60task/ConfigMenu.cpp

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+/*
+  Menu system for online configuration
+
+  A menu consists of a list of menuitems.
+
+  Graphical representation is stored:
+     upper left corner: x, y
+     bounding box:
+  A menu consists of three columns
+    - menu text, if selected highlighted
+    - menu value with optional unit
+    - menu description or additional data for value
+
+*/
+#include "ConfigMenu.h"
+
+ConfigMenuItem::ConfigMenuItem(String itemtype, String itemlabel, uint16_t itemval, String itemunit) {
+    if (! (itemtype == "int" or itemtype == "bool")) {
+        valtype = "int";
+    } else {
+        valtype = itemtype;
+    }
+    label = itemlabel;
+    min = 0;
+    max = std::numeric_limits<uint16_t>::max();
+    value = itemval;
+    unit = itemunit;
+    step = 1;
+}
+
+void ConfigMenuItem::setRange(uint16_t valmin, uint16_t valmax, std::vector<uint16_t> valsteps) {
+    min = valmin;
+    max = valmax;
+    steps = valsteps;
+    step = steps[0];
+};
+
+bool ConfigMenuItem::checkRange(uint16_t checkval) {
+    return (checkval >= min) and (checkval <= max);
+}
+
+String ConfigMenuItem::getLabel() {
+    return label;
+};
+
+uint16_t ConfigMenuItem::getValue() {
+    return value;
+}
+
+bool ConfigMenuItem::setValue(uint16_t newval) {
+    if (valtype == "int") {
+        if (newval >= min and newval <= max) {
+            value = newval;
+            return true;
+        }
+        return false; // out of range
+    } else if (valtype == "bool") {
+        value = (newval != 0) ? 1 : 0;
+        return true;
+    }
+    return false; // invalid type
+};
+
+void ConfigMenuItem::incValue() {
+    // increase value by step
+    if (valtype == "int") {
+        if (value + step < max) {
+            value += step;
+        } else {
+            value = max;
+        }
+    } else if (valtype == "bool") {
+        value = !value;
+    }
+};
+
+void ConfigMenuItem::decValue() {
+    // decrease value by step
+    if (valtype == "int") {
+        if (value - step > min) {
+            value -= step;
+        } else {
+            value = min;
+        }
+    } else if (valtype == "bool") {
+        value = !value;
+    }
+};
+
+String ConfigMenuItem::getUnit() {
+    return unit;
+}
+
+uint16_t ConfigMenuItem::getStep() {
+    return step;
+}
+
+void ConfigMenuItem::setStep(uint16_t newstep) {
+    if (std::find(steps.begin(), steps.end(), newstep) == steps.end()) {
+        return; // invalid step: not in list of possible steps
+    }
+    step = newstep;
+}
+
+int8_t ConfigMenuItem::getPos() {
+    return position;
+};
+
+void ConfigMenuItem::setPos(int8_t newpos) {
+    position = newpos;
+};
+
+String ConfigMenuItem::getType() {
+    return valtype;
+}
+
+ConfigMenu::ConfigMenu(String menutitle, uint16_t menu_x, uint16_t menu_y) {
+    title = menutitle;
+    x = menu_x;
+    y = menu_y;
+};
+
+ConfigMenuItem* ConfigMenu::addItem(String key, String label, String valtype, uint16_t val, String valunit) {
+    if (items.find(key) != items.end()) {
+        // duplicate keys not allowed
+        return nullptr;
+    }
+    ConfigMenuItem *itm = new ConfigMenuItem(valtype, label, val, valunit);
+    items.insert(std::pair<String, ConfigMenuItem*>(key, itm));
+    // Append key to index, index starting with 0
+    int8_t ix = items.size() - 1;
+    index[ix] = key;
+    itm->setPos(ix);
+    return itm;
+};
+
+void ConfigMenu::setItemDimension(uint16_t itemwidth, uint16_t itemheight) {
+    w = itemwidth;
+    h = itemheight;
+};
+
+void ConfigMenu::setItemActive(String key) {
+    if (items.find(key) != items.end()) {
+        activeitem = items[key]->getPos();
+    } else {
+        activeitem = -1;
+    }
+};
+
+int8_t ConfigMenu::getActiveIndex() {
+    return activeitem;
+}
+
+ConfigMenuItem* ConfigMenu::getActiveItem() {
+    if (activeitem < 0) {
+        return nullptr;
+    }
+    return items[index[activeitem]];
+};
+
+ConfigMenuItem* ConfigMenu::getItemByIndex(uint8_t ix) {
+    if (ix > index.size() - 1) {
+        return nullptr;
+    }
+    return items[index[ix]];
+};
+
+ConfigMenuItem* ConfigMenu::getItemByKey(String key) {
+    if (items.find(key) == items.end()) {
+        return nullptr;
+    }
+    return items[key];
+};
+
+uint8_t ConfigMenu::getItemCount() {
+    return items.size();
+};
+
+void ConfigMenu::goPrev() {
+    if (activeitem == 0) {
+        activeitem = items.size() - 1;
+    } else {
+        activeitem--;
+    }
+}
+
+void ConfigMenu::goNext() {
+    if (activeitem == items.size() - 1) {
+        activeitem = 0;
+    } else {
+        activeitem++;
+    }
+}
+
+Point ConfigMenu::getXY() {
+    return {static_cast<double>(x), static_cast<double>(y)};
+}
+
+Rect ConfigMenu::getRect() {
+    return {static_cast<double>(x), static_cast<double>(y),
+            static_cast<double>(w), static_cast<double>(h)};
+}
+
+Rect ConfigMenu::getItemRect(int8_t index) {
+    return {static_cast<double>(x), static_cast<double>(y + index * h),
+            static_cast<double>(w), static_cast<double>(h)};
+}
+
+void ConfigMenu::setCallback(void (*callback)()) {
+    fptrCallback = callback;
+}
+
+void ConfigMenu::storeValues() {
+    if (fptrCallback) {
+        fptrCallback();
+    }
+}