From 47bbc0b6733edcc08ae2c0a00cd65c021049c215 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul@crapouillou.net>
Date: Sun, 21 Jul 2013 23:54:09 -0400
Subject: [PATCH] Added a clock on the bottom bar

---
 src/Makefile.am |   4 +-
 src/clock.cpp   | 112 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/clock.h     |  28 ++++++++++++
 src/gmenu2x.cpp |   6 +++
 4 files changed, 148 insertions(+), 2 deletions(-)
 create mode 100644 src/clock.cpp
 create mode 100644 src/clock.h

diff --git a/src/Makefile.am b/src/Makefile.am
index a896f34..78c9266 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -12,7 +12,7 @@ gmenu2x_SOURCES = asfont.cpp button.cpp cpu.cpp dirdialog.cpp filedialog.cpp \
 	textdialog.cpp textmanualdialog.cpp touchscreen.cpp translator.cpp \
 	utilities.cpp wallpaperdialog.cpp \
 	browsedialog.cpp buttonbox.cpp dialog.cpp \
-	imageio.cpp powersaver.cpp monitor.cpp mediamonitor.cpp
+	imageio.cpp powersaver.cpp monitor.cpp mediamonitor.cpp clock.cpp
 
 noinst_HEADERS = asfont.h button.h cpu.h dirdialog.h FastDelegate.h \
 	filedialog.h filelister.h gmenu2x.h gp2x.h iconbutton.h imagedialog.h \
@@ -25,7 +25,7 @@ noinst_HEADERS = asfont.h button.h cpu.h dirdialog.h FastDelegate.h \
 	surfacecollection.h surface.h textdialog.h textmanualdialog.h \
 	touchscreen.h translator.h utilities.h wallpaperdialog.h \
 	browsedialog.h buttonbox.h dialog.h \
-	imageio.h powersaver.h monitor.h mediamonitor.h
+	imageio.h powersaver.h monitor.h mediamonitor.h clock.h
 
 AM_CFLAGS= @CFLAGS@ @SDL_CFLAGS@
 
diff --git a/src/clock.cpp b/src/clock.cpp
new file mode 100644
index 0000000..d3ee8d1
--- /dev/null
+++ b/src/clock.cpp
@@ -0,0 +1,112 @@
+#include <string>
+#include <sys/time.h>
+
+#include "clock.h"
+#include "debug.h"
+#include "inputmanager.h"
+
+Clock *Clock::instance = NULL;
+
+static void notify(void)
+{
+	SDL_UserEvent e = {
+		.type = SDL_USEREVENT,
+		.code = REPAINT_MENU,
+		.data1 = NULL,
+		.data2 = NULL,
+	};
+
+	/* Inject an user event, that will be handled as a "repaint"
+	 * event by the InputManager */
+	SDL_PushEvent((SDL_Event *) &e);
+}
+
+static Uint32 clockCallback(Uint32 timeout, void *d)
+{
+	unsigned int *old_ticks = (unsigned int *) d;
+	unsigned int new_ticks = SDL_GetTicks();
+
+	if (new_ticks > *old_ticks + timeout + 1000) {
+		DEBUG("Suspend occured, restarting timer\n");
+		*old_ticks = new_ticks;
+		return timeout;
+	}
+
+	Clock::getInstance()->resetTimer();
+	notify();
+	return 60000;
+}
+
+std::string &Clock::getTime(bool is24)
+{
+	char buf[9];
+	int h = hours;
+	bool pm = hours >= 12;
+
+	if (!is24 && pm)
+		h -= 12;
+
+	sprintf(buf, "%02i:%02i%s", h, minutes, is24 ? "" : (pm ? "pm" : "am"));
+	str = buf;
+	return str;
+}
+
+int Clock::update(void)
+{
+	struct timeval tv;
+	struct tm result;
+	gettimeofday(&tv, NULL);
+	localtime_r(&tv.tv_sec, &result);
+	minutes = result.tm_min;
+	hours = result.tm_hour;
+	DEBUG("Time updated: %02i:%02i\n", hours, minutes);
+	return result.tm_sec;
+}
+
+void Clock::resetTimer(void)
+{
+	SDL_RemoveTimer(timer);
+	timer = NULL;
+
+	int secs = update();
+	addTimer((60 - secs) * 1000);
+}
+
+void Clock::addTimer(int timeout)
+{
+	if (timeout < 1000 || timeout > 60000)
+		timeout = 60000;
+
+	timeout_startms = SDL_GetTicks();
+	timer = SDL_AddTimer(timeout, clockCallback, &timeout_startms);
+	if (timer == NULL)
+		ERROR("Could not initialize SDLTimer: %s\n", SDL_GetError());
+}
+
+Clock::Clock(void)
+{
+	SDL_InitSubSystem(SDL_INIT_TIMER);
+	tzset();
+
+	int sec = update();
+	addTimer((60 - sec) * 1000);
+}
+
+Clock::~Clock()
+{
+	SDL_RemoveTimer(timer);
+	SDL_QuitSubSystem(SDL_INIT_TIMER);
+	instance = NULL;
+}
+
+Clock *Clock::getInstance(void)
+{
+	if (!instance)
+		instance = new Clock();
+	return instance;
+}
+
+bool Clock::isRunning(void)
+{
+	return instance != NULL;
+}
diff --git a/src/clock.h b/src/clock.h
new file mode 100644
index 0000000..6f94481
--- /dev/null
+++ b/src/clock.h
@@ -0,0 +1,28 @@
+#ifndef __CLOCK_H__
+#define __CLOCK_H__
+
+#include <string>
+#include <SDL.h>
+
+class Clock {
+public:
+	static Clock *getInstance();
+	~Clock();
+
+	std::string &getTime(bool is24 = true);
+	static bool isRunning();
+	void resetTimer();
+
+private:
+	Clock();
+	void addTimer(int timeout);
+	int update();
+
+	static Clock *instance;
+	SDL_TimerID timer;
+	unsigned int timeout_startms;
+	int minutes, hours;
+	std::string str;
+};
+
+#endif /* __CLOCK_H__ */
diff --git a/src/gmenu2x.cpp b/src/gmenu2x.cpp
index bf60be4..c1af3f4 100644
--- a/src/gmenu2x.cpp
+++ b/src/gmenu2x.cpp
@@ -21,6 +21,7 @@
 #include "gp2x.h"
 
 #include "asfont.h"
+#include "clock.h"
 #include "cpu.h"
 #include "debug.h"
 #include "filedialog.h"
@@ -273,6 +274,8 @@ GMenu2X::GMenu2X()
 GMenu2X::~GMenu2X() {
 	if (PowerSaver::isRunning())
 		delete PowerSaver::getInstance();
+	if (Clock::isRunning())
+		delete Clock::getInstance();
 	quit();
 
 	delete menu;
@@ -705,6 +708,9 @@ void GMenu2X::main() {
 		//s->write( font, tr[batstr.c_str()], 20, 170 );
 		//On Screen Help
 
+		s->write(font, Clock::getInstance()->getTime(),
+					halfX, bottomBarTextY,
+					ASFont::HAlignCenter, ASFont::VAlignMiddle);
 
 		if (helpDisplayed) {
 			s->box(10,50,300,helpBoxHeight+4, skinConfColors[COLOR_MESSAGE_BOX_BG]);