Fixes and optimizes cursor drawing for input windows.

src/musikbox/cursespp/App.cpp

@@ -54,14 +54,6 @@
 #include <csignal>
 #endif
 
-#ifdef WIN32
-#define IDLE_TIMEOUT_MS 0
-#define REDRAW_DEBOUNCE_MS 100
-#else
-#define IDLE_TIMEOUT_MS 75
-#define REDRAW_DEBOUNCE_MS 100
-#endif
-
 using namespace cursespp;
 using namespace boost::chrono;
 
@@ -144,15 +136,12 @@ void App::Run(ILayoutPtr layout) {
         if (this->state.input) {
             /* if the focused window is an input, allow it to draw a cursor */
             WINDOW *c = this->state.focused->GetContent();
-            wtimeout(this->state.focused->GetContent(), IDLE_TIMEOUT_MS);
-            curs_set(1);
             keypad(c, TRUE);
             ch = wgetch(c);
         }
         else {
             /* otherwise, no cursor */
             ch = wgetch(stdscr);
-            curs_set(0);
         }
 
         if (ch == ERR) {
@@ -209,25 +198,11 @@ void App::Run(ILayoutPtr layout) {
     }
 }
 
-void App::CheckDrawCursor() {
-    if (this->state.input != NULL) {
-        curs_set(1);
-
-        if (this->state.focused) {
-            wtimeout(this->state.focused->GetContent(), IDLE_TIMEOUT_MS);
-        }
-    }
-    else {
-        curs_set(0);
-    }
-}
-
 void App::UpdateFocusedWindow(IWindowPtr window) {
     if (this->state.focused != window) {
         this->state.focused = window;
         this->state.input = dynamic_cast<IInput*>(window.get());
         this->state.keyHandler = dynamic_cast<IKeyHandler*>(window.get());
-        this->CheckDrawCursor();
     }
 }
 

src/musikbox/cursespp/Window.cpp

@@ -46,25 +46,27 @@ static int NEXT_ID = 0;
 static bool drawPending = false;
 static bool freeze = false;
 
+static inline void DrawCursor(IInput* input) {
+    if (input) {
+        Window* inputWindow = dynamic_cast<Window*>(input);
+        if (inputWindow) {
+            WINDOW* content = inputWindow->GetContent();
+            curs_set(1);
+            wtimeout(content, IDLE_TIMEOUT_MS);
+            wmove(content, 0, input->Position());
+        }
+    }
+    else {
+        curs_set(0);
+    }
+}
+
 void Window::WriteToScreen(IInput* input) {
     if (drawPending && !freeze) {
         drawPending = false;
-
         update_panels();
         doupdate();
-
-        /* had problems finding reliable documentation here, but it seems like
-        manually moving the cursor requires a refresh() -- doupdate() is not
-        good enough. further, we allow windows to repaint themselves at will,
-        which may change the cursor position. after each draw cycle, move the
-        cursor back to the focused input. */
-        if (input) {
-            Window* inputWindow = dynamic_cast<Window*>(input);
-            if (inputWindow) {
-                wmove(inputWindow->GetContent(), 0, input->Position());
-                wrefresh(inputWindow->GetContent());
-            }
-        }
+        DrawCursor(input);
     }
 }
 

src/musikbox/cursespp/Window.h

@@ -37,6 +37,14 @@
 #include "curses_config.h"
 #include "IWindow.h"
 
+#ifdef WIN32
+#define IDLE_TIMEOUT_MS 0
+#define REDRAW_DEBOUNCE_MS 100
+#else
+#define IDLE_TIMEOUT_MS 75
+#define REDRAW_DEBOUNCE_MS 100
+#endif
+
 namespace cursespp {
     class IInput;