Add UI font

src/main.cpp

@@ -55,11 +55,14 @@ Epub* loadEpub(const std::string& path) {
   return nullptr;
 }
 
-void enterNewScreen(Screen* screen) {
+void exitScreen() {
   if (currentScreen) {
     currentScreen->onExit();
     delete currentScreen;
   }
+}
+
+void enterNewScreen(Screen* screen) {
   currentScreen = screen;
   currentScreen->onEnter();
 }
@@ -90,7 +93,8 @@ void waitForNoButton() {
 
 // Enter deep sleep mode
 void enterDeepSleep() {
-  enterNewScreen(new FullScreenMessageScreen(renderer, "Sleeping", BOLD, true));
+  exitScreen();
+  enterNewScreen(new FullScreenMessageScreen(renderer, "Sleeping", BOLD, true, false));
 
   Serial.println("Power button released after a long press. Entering deep sleep.");
   delay(1000);  // Allow Serial buffer to empty and display to update
@@ -106,18 +110,25 @@ void enterDeepSleep() {
 
 void onGoHome();
 void onSelectEpubFile(const std::string& path) {
+  exitScreen();
   enterNewScreen(new FullScreenMessageScreen(renderer, "Loading..."));
 
   Epub* epub = loadEpub(path);
   if (epub) {
     appState->openEpubPath = path;
     appState->saveToFile();
+    exitScreen();
     enterNewScreen(new EpubReaderScreen(renderer, epub, onGoHome));
   } else {
-    enterNewScreen(new FullScreenMessageScreen(renderer, "Failed to load epub"));
+    exitScreen();
+    enterNewScreen(new FullScreenMessageScreen(renderer, "Failed to load epub", REGULAR, false, false));
   }
 }
-void onGoHome() { enterNewScreen(new FileSelectionScreen(renderer, onSelectEpubFile)); }
+
+void onGoHome() {
+  exitScreen();
+  enterNewScreen(new FileSelectionScreen(renderer, onSelectEpubFile));
+}
 
 void setup() {
   setupInputPinModes();
@@ -138,6 +149,7 @@ void setup() {
   display.setTextColor(GxEPD_BLACK);
   Serial.println("Display initialized");
 
+  exitScreen();
   enterNewScreen(new BootLogoScreen(renderer));
 
   // SD Card Initialization
@@ -147,6 +159,7 @@ void setup() {
   if (!appState->openEpubPath.empty()) {
     Epub* epub = loadEpub(appState->openEpubPath);
     if (epub) {
+      exitScreen();
       enterNewScreen(new EpubReaderScreen(renderer, epub, onGoHome));
       // Ensure we're not still holding the power button before leaving setup
       waitForNoButton();
@@ -154,6 +167,7 @@ void setup() {
     }
   }
 
+  exitScreen();
   enterNewScreen(new FileSelectionScreen(renderer, onSelectEpubFile));
 
   // Ensure we're not still holding the power button before leaving setup

src/screens/BootLogoScreen.cpp

@@ -10,5 +10,5 @@ void BootLogoScreen::onEnter() {
 
   renderer->clearScreen();
   // Location for images is from top right in landscape orientation
-  renderer->drawImage(CrossLarge, (pageHeight - 128) /2, (pageWidth - 128) / 2, 128, 128);
+  renderer->drawImage(CrossLarge, (pageHeight - 128) / 2, (pageWidth - 128) / 2, 128, 128);
 }

src/screens/BootLogoScreen.h

@@ -1,9 +1,8 @@
 #pragma once
 #include "Screen.h"
 
-
 class BootLogoScreen final : public Screen {
-public:
-  explicit BootLogoScreen(EpdRenderer* renderer): Screen(renderer) {}
+ public:
+  explicit BootLogoScreen(EpdRenderer* renderer) : Screen(renderer) {}
   void onEnter() override;
 };

src/screens/EpubReaderScreen.cpp

@@ -41,10 +41,10 @@ void EpubReaderScreen::onEnter() {
 }
 
 void EpubReaderScreen::onExit() {
-  vTaskDelete(displayTaskHandle);
-  displayTaskHandle = nullptr;
   xSemaphoreTake(sectionMutex, portMAX_DELAY);
+  vTaskDelete(displayTaskHandle);
   vSemaphoreDelete(sectionMutex);
+  displayTaskHandle = nullptr;
   sectionMutex = nullptr;
 }
 

src/screens/EpubReaderScreen.h

@@ -26,7 +26,10 @@ class EpubReaderScreen final : public Screen {
  public:
   explicit EpubReaderScreen(EpdRenderer* renderer, Epub* epub, const std::function<void()>& onGoHome)
       : Screen(renderer), epub(epub), onGoHome(onGoHome) {}
-  ~EpubReaderScreen() override { free(section); }
+  ~EpubReaderScreen() override {
+    free(section);
+    free(epub);
+  }
   void onEnter() override;
   void onExit() override;
   void handleInput(Input input) override;

src/screens/FileSelectionScreen.cpp

@@ -95,14 +95,14 @@ void FileSelectionScreen::render() const {
   renderer->drawText((pageWidth - titleWidth) / 2, 0, "CrossPoint Reader", 1, BOLD);
 
   if (files.empty()) {
-    renderer->drawSmallText(50, 50, "No EPUBs found");
+    renderer->drawUiText(10, 50, "No EPUBs found");
   } else {
     // Draw selection
-    renderer->fillRect(0, 50 + selectorIndex * 20 + 2, pageWidth - 1, 20);
+    renderer->fillRect(0, 50 + selectorIndex * 30 + 2, pageWidth - 1, 30);
 
     for (size_t i = 0; i < files.size(); i++) {
       const auto file = files[i];
-      renderer->drawSmallText(50, 50 + i * 20, file.c_str(), i == selectorIndex ? 0 : 1);
+      renderer->drawUiText(10, 50 + i * 30, file.c_str(), i == selectorIndex ? 0 : 1);
     }
   }
 

src/screens/FullScreenMessageScreen.cpp

@@ -3,13 +3,12 @@
 #include <EpdRenderer.h>
 
 void FullScreenMessageScreen::onEnter() {
-  const auto width = renderer->getTextWidth(text.c_str(), style);
+  const auto width = renderer->getUiTextWidth(text.c_str(), style);
   const auto height = renderer->getLineHeight();
   const auto left = (renderer->getPageWidth() - width) / 2;
   const auto top = (renderer->getPageHeight() - height) / 2;
 
   renderer->clearScreen(invert);
-  renderer->drawText(left, top, text.c_str(), invert ? 0 : 1, style);
-  // If inverted, do a full screen update to ensure no ghosting
-  renderer->flushDisplay(!invert);
+  renderer->drawUiText(left, top, text.c_str(), invert ? 0 : 1, style);
+  renderer->flushDisplay(partialUpdate);
 }

src/screens/FullScreenMessageScreen.h

@@ -9,10 +9,11 @@ class FullScreenMessageScreen final : public Screen {
   std::string text;
   EpdFontStyle style;
   bool invert;
+  bool partialUpdate;
 
  public:
   explicit FullScreenMessageScreen(EpdRenderer* renderer, std::string text, const EpdFontStyle style = REGULAR,
-                                   const bool invert = false)
-      : Screen(renderer), text(std::move(text)), style(style), invert(invert) {}
+                                   const bool invert = false, const bool partialUpdate = true)
+      : Screen(renderer), text(std::move(text)), style(style), invert(invert), partialUpdate(partialUpdate) {}
   void onEnter() override;
 };