fix possible issues with additinal windows due to too small screen size

src/ncmpcpp.cpp

@@ -1538,11 +1538,16 @@ int main(int argc, char *argv[])
 				ShowMessage("No selected items!");
 				continue;
 			}
+			if (MainHeight < 5)
+			{
+				ShowMessage("Screen is too small to display this window!");
+				continue;
+			}
 			
 			const size_t dialog_width = COLS*0.8;
-			const size_t dialog_height = LINES*0.6;
+			const size_t dialog_height = std::min(size_t(LINES*0.6), MainHeight);
 			
-			Menu<std::string> mDialog((COLS-dialog_width)/2, (LINES-dialog_height)/2, dialog_width, dialog_height, "Add selected items to...", Config.main_color, Config.window_border);
+			Menu<std::string> mDialog((COLS-dialog_width)/2, (MainHeight-dialog_height)/2+MainStartY, dialog_width, dialog_height, "Add selected items to...", Config.main_color, Config.window_border);
 			mDialog.SetTimeout(ncmpcpp_window_timeout);
 			mDialog.CyclicScrolling(Config.use_cyclic_scrolling);
 			mDialog.SetItemDisplayer(Display::Generic);

src/playlist.cpp

@@ -60,7 +60,7 @@ void Playlist::Init()
 	
 	SortDialogHeight = std::min(int(MainHeight-2), 18);
 	
-	SortDialog = new Menu< std::pair<std::string, MPD::Song::GetFunction> >((COLS-SortDialogWidth)/2, (LINES-SortDialogHeight)/2, SortDialogWidth, SortDialogHeight, "Sort songs by...", Config.main_color, Config.window_border);
+	SortDialog = new Menu< std::pair<std::string, MPD::Song::GetFunction> >((COLS-SortDialogWidth)/2, (MainHeight-SortDialogHeight)/2+MainStartY, SortDialogWidth, SortDialogHeight, "Sort songs by...", Config.main_color, Config.window_border);
 	SortDialog->SetTimeout(ncmpcpp_window_timeout);
 	SortDialog->CyclicScrolling(Config.use_cyclic_scrolling);
 	SortDialog->SetItemDisplayer(Display::Pairs);
@@ -107,10 +107,10 @@ void Playlist::Resize()
 	w->Resize(COLS, MainHeight);
 	w->MoveTo(0, MainStartY);
 	w->SetTitle(Config.columns_in_playlist ? Display::Columns() : "");
-	SortDialogHeight = std::min(int(MainHeight-2), 18);
-	if (MainHeight > 6)
+	SortDialogHeight = std::min(int(MainHeight), 18);
+	if (MainHeight > 5)
 		SortDialog->Resize(SortDialogWidth, SortDialogHeight);
-	SortDialog->MoveTo((COLS-SortDialogWidth)/2, (LINES-SortDialogHeight)/2);
+	SortDialog->MoveTo((COLS-SortDialogWidth)/2, (MainHeight-SortDialogHeight)/2+MainStartY);
 	hasToBeResized = 0;
 }
 

src/tag_editor.cpp

@@ -1250,12 +1250,18 @@ string TagEditor::ParseFilename(Song &s, string mask, bool preview)
 
 void TagEditor::DealWithFilenames(SongList &v)
 {
-	int width = 30;
-	int height = 6;
+	size_t width = 30;
+	size_t height = 6;
+	
+	if (size_t(COLS) < width || MainHeight < height)
+	{
+		ShowMessage("Screen is too small to display additional windows!");
+		return;
+	}
 	
 	GetPatternList();
 	
-	Menu<string> *Main = new Menu<string>((COLS-width)/2, (LINES-height)/2, width, height, "", Config.main_color, Config.window_border);
+	Menu<string> *Main = new Menu<string>((COLS-width)/2, (MainHeight-height)/2+MainStartY, width, height, "", Config.main_color, Config.window_border);
 	Main->SetTimeout(ncmpcpp_window_timeout);
 	Main->CyclicScrolling(Config.use_cyclic_scrolling);
 	Main->SetItemDisplayer(Display::Generic);
@@ -1278,7 +1284,7 @@ void TagEditor::DealWithFilenames(SongList &v)
 	}
 	
 	width = COLS*0.9;
-	height = LINES*0.8;
+	height = std::min(size_t(LINES*0.8), MainHeight);
 	bool exit = 0;
 	bool preview = 1;
 	size_t choice = Main->Choice();
@@ -1295,7 +1301,7 @@ void TagEditor::DealWithFilenames(SongList &v)
 	
 	if (choice != 3)
 	{
-		Legend = new Scrollpad((COLS-width)/2+one_width, (LINES-height)/2, two_width, height, "Legend", Config.main_color, Config.window_border);
+		Legend = new Scrollpad((COLS-width)/2+one_width, (MainHeight-height)/2+MainStartY, two_width, height, "Legend", Config.main_color, Config.window_border);
 		Legend->SetTimeout(ncmpcpp_window_timeout);
 		*Legend << "%a - artist\n";
 		*Legend << "%t - title\n";
@@ -1316,7 +1322,7 @@ void TagEditor::DealWithFilenames(SongList &v)
 		Preview->SetTitle("Preview");
 		Preview->SetTimeout(ncmpcpp_window_timeout);
 		
-		Main = new Menu<string>((COLS-width)/2, (LINES-height)/2, one_width, height, "", Config.main_color, Config.active_window_border);
+		Main = new Menu<string>((COLS-width)/2, (MainHeight-height)/2+MainStartY, one_width, height, "", Config.main_color, Config.active_window_border);
 		Main->SetTimeout(ncmpcpp_window_timeout);
 		Main->CyclicScrolling(Config.use_cyclic_scrolling);
 		Main->SetItemDisplayer(Display::Generic);