More jolly refactoring

src/display.cpp

@@ -2,15 +2,49 @@
 #include "config.h"
 
 
-void LCDPrintLine(LiquidCrystal* display, uint8_t y, char* value, uint8_t margin)
+void LCDPrintLine(LiquidCrystal* display, uint8_t y, const char* value, uint8_t margin)
 {
 
 }
 
 
-void LCDPrintLineCentered(LiquidCrystal* display, uint8_t y, char* value, uint8_t margin)
+void LCDPrintLineCentered(LiquidCrystal* display, uint8_t y, const char* value, uint8_t margin)
 {
+/*
+  const char* title = mItems[mSelected]->getTitle();
+  uint8_t titleLength = strlen(title);
+  uint8_t maxWidth = LCDWidth - 2;
 
+  display->setCursor(1, 0);
+
+  if (titleLength >= maxWidth)
+  {
+    // Title too long, cut off
+    char* character = (char*)title;
+    for (uint8_t i = 0; i < maxWidth; i++)
+    {
+      display->write(byte(*character));
+      character++;
+    }
+  }
+  else
+  {
+    // Center title
+    uint8_t offset = (maxWidth - titleLength) / 2;
+
+    for (uint8_t i = 0; i < offset; i++)
+      display->write(' ');
+
+    display->print(title);
+    offset += titleLength;
+
+    while (offset < LCDWidth - 2)
+    {
+      display->print(' ');
+      offset++;
+    }
+  }
+*/
 }
 
 

src/menu/intensity.cpp

@@ -1,4 +1,5 @@
 #include "intensity.h"
+#include "state.h"
 
 /*
   LiquidCrystal* display = getDisplay();
@@ -24,15 +25,22 @@
 
 */
 
-char* IntensityMenuItem::getTitle()
+const char* IntensityMenuItem::getTitle()
 {
-  return NULL;
+  return "Intensity";
 }
 
 
-char* IntensityMenuItem::getValue()
+const char* IntensityMenuItem::getValue()
 {
-  return NULL;
+  char value[5];
+  itoa(GetExposureIntensity(), value, 10);
+
+  uint8_t length = strlen(value);
+  value[length] = '%';
+  value[length + 1] = 0;
+
+  return value;
 }
 
 

src/menu/intensity.h

@@ -8,8 +8,8 @@ class IntensityMenuItem : public MenuItem
   public:
     IntensityMenuItem() : MenuItem() { }
 
-    char* getTitle();
-    char* getValue();
+    const char* getTitle();
+    const char* getValue();
 
     bool editable() { return true; }
 

src/menu/time.cpp

@@ -32,13 +32,13 @@
       ExposureTime -= ExposureTime > LargeStepTreshold ? LargeStep : SmallStep;
 */
 
-char* TimeMenuItem::getTitle()
+const char* TimeMenuItem::getTitle()
 {
-  return NULL;
+  return "Time";
 }
 
 
-char* TimeMenuItem::getValue()
+const char* TimeMenuItem::getValue()
 {
   return NULL;
 }

src/menu/time.h

@@ -8,8 +8,8 @@ class TimeMenuItem : public MenuItem
   public:
     TimeMenuItem() : MenuItem() { }
 
-    char* getTitle();
-    char* getValue();
+    const char* getTitle();
+    const char* getValue();
 
     bool editable() { return true; }
 

src/screen/countdown.cpp

@@ -8,18 +8,15 @@
 
 void CountdownScreen::printRemainingTime()
 {
-  const char* time = FormatTime(ExposureTime - ((getCurrentTime() - ExposureTimerStart) / 1000));
-
-  // TODO blank out, center, etc
-  LCDPrintLineCentered(getDisplay(), 1, time);
+  LCDPrintLineCentered(getDisplay(), 1, FormatTime(mLastDisplayed));
 }
 
 
 void CountdownScreen::onShow()
 {
-  mLastDisplayed = (uint32_t)-1;
-
   LCDPrintLine(getDisplay(), 0, "Exposing...");
+
+  mLastDisplayed = GetExposureTimeRemaining(getCurrentTime()) / 1000;
   printRemainingTime();
 
   digitalWrite(PinLED, HIGH);
@@ -48,25 +45,25 @@ void CountdownScreen::onEncoder(long lastPosition, long newPosition)
 
 void CountdownScreen::onTick()
 {
-  uint32_t elapsed = (getCurrentTime() - ExposureTimerStart) / 1000;
+  uint32_t remaining = GetExposureTimeRemaining(getCurrentTime()) / 1000;
 
-  if (elapsed >= ExposureTime)
+  if (remaining == 0)
   {
-    getDisplay()->setCursor(0, 0);
-    getDisplay()->print("Done!           ");
+    mLastDisplayed = 0;
 
+    LCDPrintLine(getDisplay(), 0, "Done!");
     printRemainingTime();
     digitalWrite(PinLED, LOW);
 
     Buzzer::completed();
 
-    ExposureTimerStart = 0;
+    ResetExposureTimer();
     getScreenManager()->show<MenuScreen>();
   }
-  else if (elapsed != mLastDisplayed)
+  else if (remaining != mLastDisplayed)
   {
+    mLastDisplayed = remaining;
     printRemainingTime();
-    mLastDisplayed = elapsed;
   }
 }
 

src/screen/menu.cpp

@@ -1,6 +1,7 @@
 #include "screen/menu.h"
 #include "config.h"
 #include "buzzer.h"
+#include "display.h"
 
 #include "menu/time.h"
 
@@ -46,41 +47,7 @@ void MenuScreen::printFullUpdate()
 
 void MenuScreen::printTitle()
 {
-  LiquidCrystal* display = getDisplay();
-
-  const char* title = mItems[mSelected]->getTitle();
-  uint8_t titleLength = strlen(title);
-  uint8_t maxWidth = LCDWidth - 2;
-
-  display->setCursor(1, 0);
-
-  if (titleLength >= maxWidth)
-  {
-    // Title too long, cut off
-    char* character = (char*)title;
-    for (uint8_t i = 0; i < maxWidth; i++)
-    {
-      display->write(byte(*character));
-      character++;
-    }
-  }
-  else
-  {
-    // Center title
-    uint8_t offset = (maxWidth - titleLength) / 2;
-
-    for (uint8_t i = 0; i < offset; i++)
-      display->write(' ');
-
-    display->print(title);
-    offset += titleLength;
-
-    while (offset < LCDWidth - 2)
-    {
-      display->print(' ');
-      offset++;
-    }
-  }
+  LCDPrintLineCentered(getDisplay(), 0, mItems[mSelected]->getTitle(), 1);
 }
 
 

src/screen/menu.h

@@ -8,8 +8,8 @@ class MenuItem
   public:
     virtual ~MenuItem() { }
 
-    virtual char* getTitle() = 0;
-    virtual char* getValue() { return NULL; }
+    virtual const char* getTitle() = 0;
+    virtual const char* getValue() { return NULL; }
 
     virtual bool editable() { return false; }
 

src/state.cpp

@@ -7,6 +7,30 @@ uint8_t ExposureIntensity = DefaultExposureIntensity;
 uint32_t ExposureTimerStart = 0;
 
 
+uint32_t GetExposureTime()
+{
+  return ExposureTime;
+}
+
+
+void SetExposureTime(uint32_t value)
+{
+  ExposureTime = value;
+}
+
+
+uint8_t GetExposureIntensity()
+{
+  return ExposureIntensity;
+}
+
+
+void SetExposureIntensity(uint8_t value)
+{
+  ExposureIntensity = (value <= 100) ? value : 100;
+}
+
+
 void LoadSettings()
 {
   uint16_t offset = 0;
@@ -31,4 +55,17 @@ void StartExposureTimer(unsigned long currentTime)
 {
   SaveSettings();
   ExposureTimerStart = currentTime;
+}
+
+
+void ResetExposureTimer()
+{
+  ExposureTimerStart = 0;
+}
+
+
+uint32_t GetExposureTimeRemaining(unsigned long currentTime)
+{
+  uint32_t elapsed = (currentTime - ExposureTimerStart);
+  return elapsed <= ExposureTime ? ExposureTime - elapsed : 0;
 }

src/state.h

@@ -3,15 +3,18 @@
 
 #include <Arduino.h>
 
-extern uint32_t ExposureTime;
-extern uint8_t ExposureIntensity;
+uint32_t GetExposureTime();
+void SetExposureTime(uint32_t value);
 
-extern uint32_t ExposureTimerStart;
+uint8_t GetExposureIntensity();
+void SetExposureIntensity(uint8_t value);
 
 
 void LoadSettings();
 void SaveSettings();
 
 void StartExposureTimer(unsigned long currentTime);
+void ResetExposureTimer();
+uint32_t GetExposureTimeRemaining(unsigned long currentTime);
 
 #endif