Next step in transaction implementation. Now it postpones all calls.

NOTE: This breaks most ports, and they will not pass assertions. If you will
fix it (by moving violating OSystem calls to go() method), I'll be grateful.
If you don't bother to fix it, there is a workaround. Just comment out
beginGFXTransaction() and endGFXTransaction() in backends/sdl/graphics.cpp.
This will tunr it off and will use default transaction-less implementation.

svn-id: r15870

1 files changed, 24 insertions, 0 deletions

diff --git a/backends/sdl/sdl-common.h b/backends/sdl/sdl-common.h
index 646c9a262e..2175d70590 100644
--- a/backends/sdl/sdl-common.h
+++ b/backends/sdl/sdl-common.h
@@ -53,6 +53,9 @@ public:
 	OSystem_SDL();
 	virtual ~OSystem_SDL();
 
+	void beginGFXTransaction(void);
+	void endGFXTransaction(void);
+
 	// Set the size of the video bitmap.
 	// Typically, 320x200
 	void initSize(uint w, uint h);
@@ -195,11 +198,31 @@ protected:
 		DF_UPDATE_EXPAND_1_PIXEL	= 1 << 1
 	};
 
+	enum {
+		kTransactionNone = 0,
+		kTransactionCommit = 1,
+		kTransactionActive = 2
+	};
+
+	struct transactionDetails {
+		int mode;
+		bool modeChanged;
+		int w;
+		bool wChanged;
+		int h;
+		bool hChanged;
+		bool fs;
+		bool fsChanged;
+		bool ar;
+		bool arChanged;
+	} _transactionDetails;
+
 	bool _forceFull; // Force full redraw on next updateScreen
 	ScalerProc *_scalerProc;
 	int _scalerType;
 	int _scaleFactor;
 	int _mode;
+	int _transactionMode;
 	bool _full_screen;
 	uint32 _mode_flags;
 	bool _modeChanged;
@@ -281,6 +304,7 @@ protected:
 	virtual void hotswap_gfx_mode();
 	
 	void setFullscreenMode(bool enable);
+	void setAspectRatioCorrection(bool enable);
 
 	bool save_screenshot(const char *filename);