resize & signal handler

driver/Makefile

@@ -34,7 +34,7 @@ help:
 	
 clean:
 	@echo "Cleaning..."
-	rm -f $(OBJECTS_DRV) $(OBJECTS_UI) $(OUT_CLI) $(OUT_MAIN)
+	rm -f $(OBJECTS_DRV) $(OBJECTS_UI) $(OBJ_CLI) $(OUT_CLI) $(OBJ_MAIN) $(OUT_MAIN)
 
 .cpp.o:
 	$(COMPILE) -c $< -o $@

driver/cli.cpp

@@ -3,28 +3,18 @@
 #include <vector>
 #include <string>
 #include <iostream>
+#include <signal.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
+#include <signal.h>
 #include "ui/view_main.h"
 #include "ui/view_info.h"
+#include "drv/b15f.h"
 
+// global error message
+std::string ERR_MSG;
 
 std::vector<View*> win_stack;
-ViewMain* view_main = nullptr;
-ViewInfo* view_info = nullptr;
-
-void init()
-{
-	initscr();
-	start_color();
-	curs_set(0); // 0: invisible, 1: normal, 2: very visible
-	clear();
-	noecho();
-	cbreak();  // Line buffering disabled. pass on everything
-	mousemask(ALL_MOUSE_EVENTS, NULL);
-	
-	View::setWinContext(newwin(32, 128, 0, 0));
-}
 
 void cleanup()
 {
@@ -33,13 +23,55 @@ void cleanup()
 	endwin();
 }
 
-void finish(int key)
+void signal_handler(int signal)
+{
+	if(signal == SIGWINCH)
+	{
+		if(win_stack.size())
+		{
+			usleep(1000);
+			win_stack.back()->repaint();
+		}
+	}
+	else if(signal == SIGINT)
+	{
+		cleanup();
+		std::cout << "SIGINT - Abbruch." << std::endl;
+		if(ERR_MSG.length())
+			std::cout << "ERR_MSG: " << ERR_MSG << std::endl;
+		exit(EXIT_FAILURE);
+	}
+}
+
+void init()
+{
+	// init b15 driver
+	B15F::getInstance();
+	
+	// init all ncurses stuff
+	initscr();
+	start_color();
+	curs_set(0); // 0: invisible, 1: normal, 2: very visible
+	clear();
+	noecho();
+	cbreak();  // Line buffering disabled. pass on everything
+	mousemask(ALL_MOUSE_EVENTS, NULL);
+	
+	// connect signals to handler
+	signal(SIGWINCH, signal_handler);	
+	signal(SIGINT, signal_handler);
+	
+	// set view context
+	View::setWinContext(newwin(32, 128, 0, 0));
+}
+
+void finish(int)
 {
 	cleanup();
 	exit(EXIT_SUCCESS);
 }
 
-void input(int prev_key)
+void input(int)
 {
 	std::function<void(int)> nextCall;
 	int key;
@@ -62,19 +94,21 @@ void input(int prev_key)
 	while(!false);
 }
 
-void show_info(int key)
+void show_info(int)
 {
-	View* view = new ViewInfo();
+	ViewInfo* view = new ViewInfo();
 	view->setTitle("Info");
+	view->setText("Informationen zu Board 15 Famulus Edition\nEs war einmal");
+	view->setLabelClose("[ Zurueck ]");
 	view->repaint();
 	
 	win_stack.push_back(view);
 	input(0);
 }
 
-void show_main(int key)
+void show_main(int)
 {
-	View* view = new ViewMain();	
+	ViewMain* view = new ViewMain();	
 	view->setTitle("B15F - Command Line Interface");
 	view->addCall(&show_info);
 	view->addCall(&finish);
@@ -86,7 +120,6 @@ void show_main(int key)
 
 int main()
 {
-
 	init();
 	
 	show_main(0);	

driver/ui/view.cpp

@@ -5,7 +5,10 @@ WINDOW* View::win = nullptr;
 View::View()
 {
 	if(!win)
-		throw std::runtime_error("View::win not initialized, missing context!");
+	{
+		ERR_MSG = "View::win not initialized, missing context!";
+		raise(SIGINT);
+	}
 	getmaxyx(win, height, width); // init width and height	
 	keypad(win, TRUE);
 }
@@ -42,7 +45,7 @@ void View::repaint()
 	start_y = floor((size.ws_row - height) / 2.);
 	
 	mvwin(win, start_y, start_x);
-
+	clear();
 	wclear(win);
 	
 	// generic draw
@@ -56,3 +59,20 @@ void View::repaint()
 	refresh();
 	wrefresh(win);
 }
+
+// from: https://stackoverflow.com/a/37454181
+std::vector<std::string> View::str_split(const std::string& str, const std::string delim)
+{
+    std::vector<std::string> tokens;
+    size_t prev = 0, pos = 0;
+    do
+    {
+        pos = str.find(delim, prev);
+        if (pos == std::string::npos) pos = str.length();
+        std::string token = str.substr(prev, pos-prev);
+        if (!token.empty()) tokens.push_back(token);
+        prev = pos + delim.length();
+    }
+    while (pos < str.length() && prev < str.length());
+    return tokens;
+}

driver/ui/view.h

@@ -8,6 +8,9 @@
 #include <ncurses.h> // sudo apt-get install libncurses5-dev
 #include <sys/ioctl.h>
 #include <unistd.h>
+#include <signal.h>
+
+extern std::string ERR_MSG;
 
 class View
 {
@@ -23,6 +26,7 @@ public:
 	void setTitle(std::string title);
 	
 	virtual void repaint(void);
+	static std::vector<std::string> str_split(const std::string& str, const std::string delim);
 	
 	virtual void draw(void) = 0;
 	virtual std::function<void(int)> keypress(int& key) = 0;

driver/ui/view_info.cpp

@@ -4,9 +4,28 @@ ViewInfo::ViewInfo()
 {
 }
 
+void ViewInfo::setText(std::string text)
+{
+	this->text = text;
+}
+
+void ViewInfo::setLabelClose(std::string label)
+{
+	this->label_close = label;
+}
+
 void ViewInfo::draw()
 {
-	mvwprintw(win, text_offset_y, text_offset_x, "%s", "hello");
+	int li = 0;
+	for(std::string line : str_split(text, "\n"))
+		mvwprintw(win, text_offset_y + li++, text_offset_x, "%s", line.c_str());
+	
+	close_offset_x = (width - label_close.length()) / 2;
+	close_offset_y = height - 2;
+	
+	wattron(win, A_REVERSE);
+	mvwprintw(win, close_offset_y, close_offset_x, "%s", label_close.c_str());
+	wattroff(win, A_REVERSE);
 }
 
 std::function<void(int)> ViewInfo::keypress(int& key)
@@ -19,8 +38,13 @@ std::function<void(int)> ViewInfo::keypress(int& key)
 		{
 			// http://pronix.linuxdelta.de/C/Linuxprogrammierung/Linuxsystemprogrammieren_C_Kurs_Kapitel10b.shtml
 			MEVENT event;
-			if(getmouse(&event) == OK && event.bstate & BUTTON1_CLICKED)
-				key = -1; // do return from view
+			if(getmouse(&event) == OK && event.bstate & (BUTTON1_CLICKED | BUTTON1_DOUBLE_CLICKED))
+			{
+				size_t column = start_x + close_offset_x;
+				size_t row = start_y + close_offset_y;
+				if(event.y == row && event.x >= column && event.x < column + label_close.length())
+					key = -1; // do return from view
+			}
 			break;
 		}
 		case KEY_ENT:

driver/ui/view_info.h

@@ -7,10 +7,16 @@ class ViewInfo : public View
 {
 public:
 	ViewInfo(void);
+	virtual void setText(std::string text);
+	virtual void setLabelClose(std::string label);
 	virtual void draw(void) override;
 	virtual std::function<void(int)> keypress(int& key) override;
 
 private:
+	std::string text;
+	std::string label_close;
+	int close_offset_x = 0;
+	int close_offset_y = 0;
 	constexpr static int text_offset_x = 2;
 	constexpr static int text_offset_y = 3;
 };

driver/ui/view_main.h

@@ -16,8 +16,8 @@ private:
 	constexpr static int choice_offset_y = 3;
 	size_t selection = 0;
 	const std::vector<std::string> choices = {
-		"Beobachten",
-		"Exit"
+		"[ Informationen ]",
+		"[ Beenden ]"
 	};
 };