From 7c7c2cdce368b09b8b07bab860874440c7bc3c14 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 24 Dec 2007 23:06:24 +0000
Subject: [PATCH] Implement the rest of fullscreen mode (video mode switching,
 pointer grab)

---
 source/display.cpp | 17 ++++++++++++-----
 source/display.h   |  5 +++++
 source/window.cpp  | 13 +++++++++++++
 3 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/source/display.cpp b/source/display.cpp
index 724318a..b8e4fbe 100644
--- a/source/display.cpp
+++ b/source/display.cpp
@@ -59,19 +59,25 @@ Display::Display(const string &disp_name)
 
 	XSetErrorHandler(x_error_handler);
 
+	int screen=DefaultScreen(display);
+
 	int nmodes;
 	XF86VidModeModeInfo **infos;
-	XF86VidModeGetAllModeLines(display, DefaultScreen(display), &nmodes, &infos);
+	XF86VidModeGetAllModeLines(display, screen, &nmodes, &infos);
 	for(int i=0; i<nmodes; ++i)
 	{
 		XF86VidModeModeInfo &info=*infos[i];
 	
-		VideoMode mode;
-		mode.width=info.hdisplay;
-		mode.height=info.vdisplay;
+		VideoMode mode(info.hdisplay, info.vdisplay);
 		mode.rate=info.dotclock/(info.htotal*info.vtotal);
 		modes.push_back(mode);
 	}
+
+	XF86VidModeModeLine modeline;
+	int dotclock;
+	XF86VidModeGetModeLine(display, screen, &dotclock, &modeline);
+	orig_mode=VideoMode(modeline.hdisplay, modeline.vdisplay);
+	orig_mode.rate=dotclock/(modeline.htotal*modeline.vtotal);
 }
 
 Display::~Display()
@@ -102,9 +108,10 @@ void Display::set_mode(const VideoMode &mode)
 		XF86VidModeModeInfo &info=*infos[i];
 
 		unsigned rate=info.dotclock/(info.htotal*info.vtotal);
-		if(info.hdisplay==mode.width && info.vdisplay==mode.height && rate==mode.rate)
+		if(info.hdisplay==mode.width && info.vdisplay==mode.height && (mode.rate==0 || rate==mode.rate))
 		{
 			XF86VidModeSwitchToMode(display, screen, &info);
+			XF86VidModeSetViewPort(display, screen, 0, 0);
 			return;
 		}
 	}
diff --git a/source/display.h b/source/display.h
index 0433eab..7397a78 100644
--- a/source/display.h
+++ b/source/display.h
@@ -23,6 +23,9 @@ struct VideoMode
 	unsigned width;
 	unsigned height;
 	unsigned rate;
+
+	VideoMode(): width(0), height(0), rate(0) { }
+	VideoMode(unsigned w, unsigned h): width(w), height(h), rate(0) { }
 };
 
 class Display
@@ -30,6 +33,7 @@ class Display
 private:
 	::Display *display;
 	std::list<VideoMode> modes;
+	VideoMode orig_mode;
 	std::map<WindowHandle, Window *> windows;
 
 public:
@@ -43,6 +47,7 @@ public:
 
 	const std::list<VideoMode> &get_modes() const { return modes; }
 	void set_mode(const VideoMode &);
+	void restore_mode() { set_mode(orig_mode); }
 
 	void tick();
 	void check_error();
diff --git a/source/window.cpp b/source/window.cpp
index f867faf..2241956 100644
--- a/source/window.cpp
+++ b/source/window.cpp
@@ -48,6 +48,9 @@ Window::~Window()
 		XDestroyWindow(display.get_display(), window);
 
 	display.remove_window(this);
+
+	if(options.fullscreen)
+		display.restore_mode();
 }
 
 void Window::set_title(const string &title)
@@ -88,6 +91,12 @@ void Window::init()
 
 	XSetWMProtocols(dpy, window, &wm_delete_window, 1);
 
+	if(options.fullscreen)
+	{
+		display.set_mode(VideoMode(options.width, options.height));
+		XWarpPointer(dpy, None, window, 0, 0, 0, 0, options.width/2, options.height/2);
+	}
+
 	display.add_window(this);
 	display.check_error();
 }
@@ -128,6 +137,10 @@ void Window::event(const XEvent &ev)
 	case EnterNotify:
 		XSetInputFocus(display.get_display(), window, RevertToParent, CurrentTime);
 		break;
+	case MapNotify:
+		if(options.fullscreen)
+			XGrabPointer(display.get_display(), window, true, None, GrabModeAsync, GrabModeAsync, window, None, CurrentTime);
+		break;
 	default:;
 	}
 }
-- 
2.43.0