fix: empty screen on startup

source/view/annual_view.cpp

@@ -33,7 +33,11 @@ AnnualView::AnnualView(const std::chrono::year_month_day &today, bool sundayStar
       m_tagsMenu{makeTagsMenu()}, m_sectionsMenu{makeSectionsMenu()},
       m_rootComponent{makeFullUIComponent()}, m_recentEventsWindow{recentEventsWindow} {}
 
-void AnnualView::run() { m_screen.Loop(m_rootComponent); }
+void AnnualView::run() {
+    // Caps-log expects the terminal to be at least 80x24
+    Terminal::SetFallbackSize(Dimensions{/*dimx=*/80, /*dimy=*/24});
+    m_screen.Loop(m_rootComponent);
+}
 
 void AnnualView::stop() { m_screen.ExitLoopClosure()(); }
 

source/view/calendar_component.cpp

@@ -5,6 +5,7 @@
 #include "view/ftxui_ext/extended_containers.hpp"
 
 #include <ftxui/screen/screen.hpp>
+#include <ftxui/screen/terminal.hpp>
 
 namespace caps_log::view {
 using namespace ftxui;
@@ -41,7 +42,10 @@ class MonthComponentArranger {
      * @brief Computes the number of months that can be displayed in a row.
      */
     static int computeNumberOfMonthsPerRow(const Screen &screen) {
-        int availableMonthColumns = screen.dimx() / kCharsPerMonthComponet;
+        // Caps log runs only in fullscreen mode so we can safely assume the terminal size
+        // is the screen size
+        const auto terminal_size = Terminal::Size();
+        int availableMonthColumns = terminal_size.dimx / kCharsPerMonthComponet;
         // prevent spliting 12 months into 2 rows of unequal elements
         if (availableMonthColumns == 5) { // NOLINT
             availableMonthColumns = 4;