Put background painting and global keys in new Background layer

The battery status was put into a separate class instead of directly
into the Background class.

src/Makefile.am

@@ -13,7 +13,7 @@ gmenu2x_SOURCES = font.cpp button.cpp cpu.cpp dirdialog.cpp filedialog.cpp \
 	utilities.cpp wallpaperdialog.cpp \
 	browsedialog.cpp buttonbox.cpp dialog.cpp \
 	imageio.cpp powersaver.cpp monitor.cpp mediamonitor.cpp clock.cpp \
-	helppopup.cpp
+	helppopup.cpp background.cpp battery.cpp
 
 noinst_HEADERS = font.h button.h cpu.h dirdialog.h \
 	filedialog.h filelister.h gmenu2x.h gp2x.h iconbutton.h imagedialog.h \
@@ -27,7 +27,7 @@ noinst_HEADERS = font.h button.h cpu.h dirdialog.h \
 	touchscreen.h translator.h utilities.h wallpaperdialog.h \
 	browsedialog.h buttonbox.h dialog.h \
 	imageio.h powersaver.h monitor.h mediamonitor.h clock.h \
-	layer.h helppopup.h
+	layer.h helppopup.h background.h battery.h
 
 AM_CFLAGS= @CFLAGS@ @SDL_CFLAGS@
 

src/background.cpp

@@ -0,0 +1,46 @@
+// Various authors.
+// License: GPL version 2 or later.
+
+#include "background.h"
+
+#include "gmenu2x.h"
+
+
+Background::Background(GMenu2X &gmenu2x)
+	: gmenu2x(gmenu2x)
+	, battery(gmenu2x.sc)
+{
+}
+
+void Background::paint(Surface &s) {
+	Font &font = *gmenu2x.font;
+	SurfaceCollection &sc = gmenu2x.sc;
+
+	sc["bgmain"]->blit(&s, 0, 0);
+
+	s.write(&font, clock.getTime(),
+			s.width() / 2, gmenu2x.bottomBarTextY,
+			Font::HAlignCenter, Font::VAlignMiddle);
+
+	battery.getIcon().blit(&s, s.width() - 19, gmenu2x.bottomBarIconY);
+}
+
+bool Background::handleButtonPress(InputManager::Button button) {
+	switch (button) {
+		case InputManager::CANCEL:
+			gmenu2x.showHelpPopup();
+			return true;
+		case InputManager::SETTINGS:
+			gmenu2x.showSettings();
+			return true;
+		case InputManager::MENU:
+			gmenu2x.contextMenu();
+			return true;
+		default:
+			return false;
+	}
+}
+
+bool Background::handleTouchscreen(Touchscreen &/*ts*/) {
+	return false;
+}

src/background.h

@@ -0,0 +1,32 @@
+// Various authors.
+// License: GPL version 2 or later.
+
+#ifndef BACKGROUND_H
+#define BACKGROUND_H
+
+#include "battery.h"
+#include "clock.h"
+#include "layer.h"
+
+class GMenu2X;
+
+
+/**
+ * The backmost layer.
+ */
+class Background : public Layer {
+public:
+	Background(GMenu2X &gmenu2x);
+
+	// Layer implementation:
+	virtual void paint(Surface &s);
+	virtual bool handleButtonPress(InputManager::Button button);
+	virtual bool handleTouchscreen(Touchscreen &ts);
+
+private:
+	GMenu2X &gmenu2x;
+	Battery battery;
+	Clock clock;
+};
+
+#endif // BACKGROUND_H

src/battery.cpp

@@ -0,0 +1,78 @@
+#include "battery.h"
+
+#include "surfacecollection.h"
+
+#include <SDL.h>
+#include <cstdio>
+#include <sstream>
+
+
+/**
+ * Reads the current battery state and returns a number representing its level
+ * of charge.
+ * @return A number representing battery charge: 0 means fully discharged,
+ * 5 means fully charged, 6 represents running on external power.
+ */
+static unsigned short getBatteryLevel()
+{
+	FILE *batteryHandle = NULL, *usbHandle = NULL;
+
+#if defined(PLATFORM_A320) || defined(PLATFORM_GCW0) || defined(PLATFORM_NANONOTE)
+	usbHandle = fopen("/sys/class/power_supply/usb/online", "r");
+#endif
+	if (usbHandle) {
+		int usbval = 0;
+		fscanf(usbHandle, "%d", &usbval);
+		fclose(usbHandle);
+		if (usbval == 1)
+			return 6;
+	}
+
+#if defined(PLATFORM_A320) || defined(PLATFORM_GCW0) || defined(PLATFORM_NANONOTE)
+	batteryHandle = fopen("/sys/class/power_supply/battery/capacity", "r");
+#endif
+	if (batteryHandle) {
+		int battval = 0;
+		fscanf(batteryHandle, "%d", &battval);
+		fclose(batteryHandle);
+
+		if (battval>90) return 5;
+		if (battval>70) return 4;
+		if (battval>50) return 3;
+		if (battval>30) return 2;
+		if (battval>10) return 1;
+	}
+
+	return 0;
+}
+
+Battery::Battery(SurfaceCollection &sc_)
+	: sc(sc_)
+{
+	lastUpdate = SDL_GetTicks();
+	update();
+}
+
+const Surface &Battery::getIcon()
+{
+	// Check battery status every 60 seconds.
+	unsigned int now = SDL_GetTicks();
+	if (now - lastUpdate >= 60000) {
+		lastUpdate = now;
+		update();
+	}
+
+	return *sc.skinRes(iconPath);
+}
+
+void Battery::update()
+{
+	unsigned short battlevel = getBatteryLevel();
+	if (battlevel > 5) {
+		iconPath = "imgs/battery/ac.png";
+	} else {
+		std::stringstream ss;
+		ss << "imgs/battery/" << battlevel << ".png";
+		ss >> iconPath;
+	}
+}

src/battery.h

@@ -0,0 +1,30 @@
+#ifndef __BATTERY_H__
+#define __BATTERY_H__
+
+#include <string>
+
+class Surface;
+class SurfaceCollection;
+
+
+/**
+ * Keeps track of the battery status.
+ */
+class Battery {
+public:
+	Battery(SurfaceCollection &sc);
+
+	/**
+	 * Gets the icon that reflects the current battery status.
+	 */
+	const Surface &getIcon();
+
+private:
+	void update();
+
+	SurfaceCollection &sc;
+	std::string iconPath;
+	unsigned int lastUpdate;
+};
+
+#endif /* __BATTERY_H__ */

src/gmenu2x.cpp

@@ -20,7 +20,7 @@
 
 #include "gp2x.h"
 
-#include "clock.h"
+#include "background.h"
 #include "cpu.h"
 #include "debug.h"
 #include "filedialog.h"
@@ -227,14 +227,13 @@ GMenu2X::GMenu2X()
 		quit();
 	}
 
-	clock.reset(new Clock());
-
 	s = Surface::openOutputSurface(resX, resY, confInt["videoBpp"]);
 
 	bg = NULL;
 	font = NULL;
 	btnContextMenu = nullptr;
 	setSkin(confStr["skin"], !fileExists(confStr["wallpaper"]));
+	layers.insert(layers.begin(), make_shared<Background>(*this));
 	initMenu();
 
 	monitor = new MediaMonitor(CARD_ROOT);
@@ -377,7 +376,7 @@ void GMenu2X::initMenu() {
 
 		//Add virtual links in the setting section
 		else if (menu->getSections()[i]=="settings") {
-			menu->addActionLink(i,"GMenu2X",BIND(&GMenu2X::options),tr["Configure GMenu2X's options"],"skin:icons/configure.png");
+			menu->addActionLink(i,"GMenu2X",BIND(&GMenu2X::showSettings),tr["Configure GMenu2X's options"],"skin:icons/configure.png");
 			menu->addActionLink(i,tr["Skin"],BIND(&GMenu2X::skinMenu),tr["Configure skin"],"skin:icons/skin.png");
 			menu->addActionLink(i,tr["Wallpaper"],BIND(&GMenu2X::changeWallpaper),tr["Change GMenu2X wallpaper"],"skin:icons/wallpaper.png");
 			if (fileExists(getHome()+"/log.txt"))
@@ -601,9 +600,6 @@ void GMenu2X::writeTmp(int selelem, const string &selectordir) {
 }
 
 void GMenu2X::paint() {
-	//Background
-	sc["bgmain"]->blit(s,0,0);
-
 	for (auto layer : layers) {
 		layer->paint(*s);
 	}
@@ -621,38 +617,14 @@ void GMenu2X::paint() {
 	if (ts.available()) {
 		btnContextMenu->paint();
 	}
-
-	sc.skinRes(batteryIcon)->blit( s, resX-19, bottomBarIconY );
-	//s->write( font, tr[batstr.c_str()], 20, 170 );
-
-	s->write(font, clock->getTime(),
-				halfX, bottomBarTextY,
-				Font::HAlignCenter, Font::VAlignMiddle);
 }
 
 void GMenu2X::main() {
-
-	batteryIcon = "imgs/battery/0.png";
-	long tickBattery = -60000;
-
 	if (!fileExists(CARD_ROOT))
 		CARD_ROOT = "";
 
 	bool quit = false;
 	while (!quit) {
-		//check battery status every 60 seconds
-		long tickNow = SDL_GetTicks();
-		if (tickNow - tickBattery >= 60000) {
-			tickBattery = tickNow;
-			unsigned short battlevel = getBatteryLevel();
-			if (battlevel>5) {
-				batteryIcon = "imgs/battery/ac.png";
-			} else {
-				stringstream ss;
-				ss << "imgs/battery/" << battlevel << ".png";
-				ss >> batteryIcon;
-			}
-		}
 
 		paint();
 		s->flip();
@@ -661,30 +633,17 @@ void GMenu2X::main() {
 		if (ts.available()) {
 			ts.poll();
 			btnContextMenu->handleTS();
-			bool handled = false;
-			for (auto it = layers.rbegin(); !handled && it != layers.rend(); ++it) {
-				handled = (*it)->handleTouchscreen(ts);
+			for (auto it = layers.rbegin(); it != layers.rend(); ++it) {
+				if ((*it)->handleTouchscreen(ts)) {
+					break;
+				}
 			}
 		}
 
 		InputManager::Button button = input.waitForPressedButton();
-		bool handled = false;
-		for (auto it = layers.rbegin(); !handled && it != layers.rend(); ++it) {
-			handled = (*it)->handleButtonPress(button);
-		}
-		if (!handled) {
-			switch (button) {
-				case InputManager::CANCEL:
-					layers.push_back(make_shared<HelpPopup>(*this));
-					break;
-				case InputManager::SETTINGS:
-					options();
-					break;
-				case InputManager::MENU:
-					contextMenu();
-					break;
-				default:
-					break;
+		for (auto it = layers.rbegin(); it != layers.rend(); ++it) {
+			if ((*it)->handleButtonPress(button)) {
+				break;
 			}
 		}
 
@@ -720,7 +679,11 @@ void GMenu2X::explorer() {
 	}
 }
 
-void GMenu2X::options() {
+void GMenu2X::showHelpPopup() {
+	layers.push_back(make_shared<HelpPopup>(*this));
+}
+
+void GMenu2X::showSettings() {
 #ifdef ENABLE_CPUFREQ
 	int curMenuClock = confInt["menuClock"];
 #endif
@@ -1342,39 +1305,6 @@ typedef struct {
 	unsigned short remocon;
 } MMSP2ADC;
 
-unsigned short GMenu2X::getBatteryLevel() {
-	FILE *batteryHandle = NULL,
-		 *usbHandle = NULL;
-
-#if defined(PLATFORM_A320) || defined(PLATFORM_GCW0) || defined(PLATFORM_NANONOTE)
-	usbHandle = fopen("/sys/class/power_supply/usb/online", "r");
-#endif
-	if (usbHandle) {
-		int usbval = 0;
-		fscanf(usbHandle, "%d", &usbval);
-		fclose(usbHandle);
-		if (usbval == 1)
-			return 6;
-	}
-
-#if defined(PLATFORM_A320) || defined(PLATFORM_GCW0) || defined(PLATFORM_NANONOTE)
-	batteryHandle = fopen("/sys/class/power_supply/battery/capacity", "r");
-#endif
-	if (batteryHandle) {
-		int battval = 0;
-		fscanf(batteryHandle, "%d", &battval);
-		fclose(batteryHandle);
-
-		if (battval>90) return 5;
-		if (battval>70) return 4;
-		if (battval>50) return 3;
-		if (battval>30) return 2;
-		if (battval>10) return 1;
-	}
-
-	return 0;
-}
-
 void GMenu2X::setInputSpeed() {
 	SDL_EnableKeyRepeat(1,150);
 }

src/gmenu2x.h

@@ -34,7 +34,6 @@
 #include <vector>
 
 class Button;
-class Clock;
 class Font;
 class HelpPopup;
 class IconButton;
@@ -71,8 +70,6 @@ private:
 	Touchscreen ts;
 	std::shared_ptr<Menu> menu;
 	MediaMonitor *monitor;
-	std::string batteryIcon;
-	std::unique_ptr<Clock> clock;
 
 	std::vector<std::shared_ptr<Layer>> layers;
 
@@ -93,11 +90,6 @@ private:
 
 	void initCPULimits();
 #endif
-	/*!
-	Reads the current battery state and returns a number representing it's level of charge
-	@return A number representing battery charge. 0 means fully discharged. 5 means fully charged. 6 represents a gp2x using AC power.
-	*/
-	unsigned short getBatteryLevel();
 	void browsePath(const std::string &path, std::vector<std::string>* directories, std::vector<std::string>* files);
 	/*!
 	Starts the scanning of the nand and sd filesystems, searching for dge and gpu files and creating the links in 2 dedicated sections.
@@ -167,7 +159,8 @@ public:
 
 	//Status functions
 	void main();
-	void options();
+	void showHelpPopup();
+	void showSettings();
 	void skinMenu();
 	void about();
 	void viewLog();