Implement interface for plugins to have custom UI Frames

src/graphics/Screen.cpp

@@ -64,6 +64,10 @@ uint8_t imgBattery[16] = {0xFF, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
 // Threshold values for the GPS lock accuracy bar display
 uint32_t dopThresholds[5] = {2000, 1000, 500, 200, 100};
 
+// At some point, we're going to ask all of the plugins if they would like to display a screen frame
+// we'll need to hold onto pointers for the plugins that can draw a frame.
+std::vector<MeshPlugin *> pluginFrames;
+
 // Stores the last 4 of our hardware ID, to make finding the device for pairing easier
 static char ourId[5];
 
@@ -144,6 +148,14 @@ static void drawSleepScreen(OLEDDisplay *display, OLEDDisplayUiState *state, int
     drawIconScreen("Sleeping...", display, state, x, y);
 }
 
+static void drawPluginFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
+{
+    DEBUG_MSG("Drawing Plugin Frame %d\n\n", state->currentFrame);
+    MeshPlugin &pi = *pluginFrames.at(state->currentFrame);
+    pi.drawFrame(display,state,x,y);
+    
+}
+
 static void drawFrameBluetooth(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
 {
     display->setTextAlignment(TEXT_ALIGN_CENTER);
@@ -887,6 +899,11 @@ void Screen::setFrames()
     DEBUG_MSG("showing standard frames\n");
     showingNormalScreen = true;
 
+    pluginFrames = MeshPlugin::GetMeshPluginsWithUIFrames();
+    DEBUG_MSG("Showing %d plugin frames\n", pluginFrames.size());
+    int totalFrameCount = MAX_NUM_NODES + NUM_EXTRA_FRAMES + pluginFrames.size();
+    DEBUG_MSG("Total frame count: %d\n", totalFrameCount);
+
     // We don't show the node info our our node (if we have it yet - we should)
     size_t numnodes = nodeStatus->getNumTotal();
     if (numnodes > 0)
@@ -894,6 +911,18 @@ void Screen::setFrames()
 
     size_t numframes = 0;
 
+    // put all of the plugin frames first.
+    // this is a little bit of a dirty hack; since we're going to call
+    // the same drawPluginFrame handler here for all of these plugin frames
+    // and then we'll just assume that the state->currentFrame value
+    // is the same offset into the pluginFrames vector
+    // so that we can invoke the plugin's callback
+    for (auto i = pluginFrames.begin(); i != pluginFrames.end(); ++i) {
+        normalFrames[numframes++] = drawPluginFrame;
+    }
+    
+    DEBUG_MSG("Added plugins.  numframes: %d", numframes);
+
     // If we have a critical fault, show it first
     if (myNodeInfo.error_code)
         normalFrames[numframes++] = drawCriticalFaultFrame;
@@ -922,6 +951,8 @@ void Screen::setFrames()
     }
 #endif
 
+    DEBUG_MSG("Finished building frames. numframes: %d\n", numframes);
+
     ui.setFrames(normalFrames, numframes);
     ui.enableAllIndicators();
 

src/mesh/MeshPlugin.cpp

@@ -75,4 +75,18 @@ void MeshPlugin::sendResponse(const MeshPacket &req) {
 void setReplyTo(MeshPacket *p, const MeshPacket &to) {
     p->to = to.from;
     p->want_ack = to.want_ack;
-}
+}
+
+std::vector<MeshPlugin *> MeshPlugin::GetMeshPluginsWithUIFrames() {
+
+    std::vector<MeshPlugin *> pluginsWithUIFrames;    
+    for (auto i = plugins->begin(); i != plugins->end(); ++i) {
+        auto &pi = **i;
+        if ( pi.wantUIFrame()) {
+            DEBUG_MSG("Plugin wants a UI Frame\n");
+            pluginsWithUIFrames.push_back(&pi);
+        }
+    }
+    return pluginsWithUIFrames;
+    
+}

src/mesh/MeshPlugin.h

@@ -2,6 +2,8 @@
 
 #include "mesh/MeshTypes.h"
 #include <vector>
+#include <OLEDDisplay.h>
+#include <OLEDDisplayUi.h>
 /** A baseclass for any mesh "plugin".
  *
  * A plugin allows you to add new features to meshtastic device code, without needing to know messaging details.
@@ -14,7 +16,7 @@
  */
 class MeshPlugin
 {
-    static std::vector<MeshPlugin *> *plugins;
+  static std::vector<MeshPlugin *> *plugins;
 
   public:
     /** Constructor
@@ -28,6 +30,10 @@ class MeshPlugin
      */
     static void callPlugins(const MeshPacket &mp);
 
+    static std::vector<MeshPlugin *> GetMeshPluginsWithUIFrames();
+
+    virtual void drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y) { return; }
+
   protected:
     const char *name;
 
@@ -61,6 +67,13 @@ class MeshPlugin
      * so that subclasses can (optionally) send a response back to the original sender.  */
     virtual MeshPacket *allocReply() { return NULL; }
 
+    /***
+     * @return true if you want to be alloced a UI screen frame
+     */
+    virtual bool wantUIFrame() { return false; }
+
+
+
   private:
 
     /** Messages can be received that have the want_response bit set.  If set, this callback will be invoked

src/plugins/esp32/EnvironmentalMeasurementPlugin.cpp

@@ -7,6 +7,8 @@
 #include "main.h"
 #include "../mesh/generated/environmental_measurement.pb.h"
 #include <DHT.h>
+#include <OLEDDisplay.h>
+#include <OLEDDisplayUi.h>
 
 EnvironmentalMeasurementPlugin *environmentalMeasurementPlugin;
 EnvironmentalMeasurementPluginRadio *environmentalMeasurementPluginRadio;
@@ -17,7 +19,7 @@ uint32_t sensor_read_error_count = 0;
 
 #define DHT_11_GPIO_PIN 13
 //TODO: Make a related radioconfig preference to allow less-frequent reads
-#define ENVIRONMENTAL_MEASUREMENT_APP_ENABLED false // DISABLED by default; set this to true if you want to use the plugin
+#define ENVIRONMENTAL_MEASUREMENT_APP_ENABLED true // DISABLED by default; set this to true if you want to use the plugin
 #define DHT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS 1000
 #define SENSOR_READ_ERROR_COUNT_THRESHOLD 5
 #define SENSOR_READ_MULTIPLIER 3
@@ -26,6 +28,24 @@ uint32_t sensor_read_error_count = 0;
 
 DHT dht(DHT_11_GPIO_PIN,DHT11);
 
+
+#ifdef HAS_EINK
+// The screen is bigger so use bigger fonts
+#define FONT_SMALL ArialMT_Plain_16
+#define FONT_MEDIUM ArialMT_Plain_24
+#define FONT_LARGE ArialMT_Plain_24
+#else
+#define FONT_SMALL ArialMT_Plain_10
+#define FONT_MEDIUM ArialMT_Plain_16
+#define FONT_LARGE ArialMT_Plain_24
+#endif
+
+#define fontHeight(font) ((font)[1] + 1) // height is position 1
+
+#define FONT_HEIGHT_SMALL fontHeight(FONT_SMALL)
+#define FONT_HEIGHT_MEDIUM fontHeight(FONT_MEDIUM)
+
+
 int32_t EnvironmentalMeasurementPlugin::runOnce() {
 #ifndef NO_ESP32
     if (!ENVIRONMENTAL_MEASUREMENT_APP_ENABLED){
@@ -70,6 +90,28 @@ int32_t EnvironmentalMeasurementPlugin::runOnce() {
 #endif
 }
 
+void EnvironmentalMeasurementPluginRadio::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
+{
+    display->setTextAlignment(TEXT_ALIGN_LEFT);
+    display->setFont(FONT_MEDIUM);
+    display->drawString(x, y, "Environment");
+    display->setFont(FONT_SMALL);
+    display->drawString(x, y += fontHeight(FONT_MEDIUM), lastSender+": T:"+ String(lastMeasurement.temperature,2) + " H:" + String(lastMeasurement.relative_humidity,2));
+
+}
+
+String GetSenderName(const MeshPacket &mp) {
+    String sender;
+
+    if (nodeDB.getNode(mp.from)){
+        sender = nodeDB.getNode(mp.from)->user.short_name;
+    }
+    else {
+        sender = "UNK";
+    }
+    return sender;
+}
+
 bool EnvironmentalMeasurementPluginRadio::handleReceivedProtobuf(const MeshPacket &mp, const EnvironmentalMeasurement &p)
 {
     if (!ENVIRONMENTAL_MEASUREMENT_APP_ENABLED){
@@ -77,26 +119,24 @@ bool EnvironmentalMeasurementPluginRadio::handleReceivedProtobuf(const MeshPacke
          return false;
     }
     bool wasBroadcast = mp.to == NODENUM_BROADCAST;
-    String sender;
+
+    String sender = GetSenderName(mp);
     
-    if (nodeDB.getNode(mp.from)){
-        sender = nodeDB.getNode(mp.from)->user.short_name;
-    }
-    else {
-        sender = "UNK";
-    }
     // Show new nodes on LCD screen
     if (DISPLAY_RECEIVEID_MEASUREMENTS_ON_SCREEN && wasBroadcast) {
-        String lcd = String("Env Measured: ") + sender + "\n" +
+        String lcd = String("Env Measured: ") +sender + "\n" +
             "T: " + p.temperature + "\n" +
             "H: " + p.relative_humidity + "\n";
         screen->print(lcd.c_str());
     }
     DEBUG_MSG("-----------------------------------------\n");
 
-    DEBUG_MSG("EnvironmentalMeasurement: Received data from %s\n",sender);
+    DEBUG_MSG("EnvironmentalMeasurement: Received data from %s\n", sender);
     DEBUG_MSG("EnvironmentalMeasurement->relative_humidity: %f\n", p.relative_humidity);
     DEBUG_MSG("EnvironmentalMeasurement->temperature: %f\n", p.temperature);
+
+    lastMeasurement = p;
+    lastSender = sender;
     return false; // Let others look at this message also if they want
 }
 

src/plugins/esp32/EnvironmentalMeasurementPlugin.h

@@ -1,6 +1,8 @@
 #pragma once
 #include "ProtobufPlugin.h"
 #include "../mesh/generated/environmental_measurement.pb.h"
+#include <OLEDDisplay.h>
+#include <OLEDDisplayUi.h>
 
 
 class EnvironmentalMeasurementPlugin : private concurrency::OSThread
@@ -31,6 +33,8 @@ class EnvironmentalMeasurementPluginRadio : public ProtobufPlugin<EnvironmentalM
      * Send our EnvironmentalMeasurement into the mesh
      */
     bool sendOurEnvironmentalMeasurement(NodeNum dest = NODENUM_BROADCAST, bool wantReplies = false);
+    
+    virtual void drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y);
 
   protected:
     
@@ -40,6 +44,17 @@ class EnvironmentalMeasurementPluginRadio : public ProtobufPlugin<EnvironmentalM
     */
     virtual bool handleReceivedProtobuf(const MeshPacket &mp, const EnvironmentalMeasurement &p);
 
+    virtual bool wantUIFrame() {
+      return true;
+    }
+
+
+  private:
+  
+    EnvironmentalMeasurement lastMeasurement;
+
+    String lastSender;
+
 };
 
 extern EnvironmentalMeasurementPluginRadio *environmentalMeasurementPluginRadio;