(svn r7759) -Merge: makefile rewrite. This merge features:

- A proper ./configure, so everything needs to be configured only once, not for every make.
 - Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
 - A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
 - Proper support for OSX universal binaries.
 - Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
 - Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.

src/viewport.h

@@ -0,0 +1,151 @@
+/* $Id$ */
+
+#ifndef VIEWPORT_H
+#define VIEWPORT_H
+
+struct ViewPort {
+	int left,top;                       // screen coordinates for the viewport
+	int width, height;                  // screen width/height for the viewport
+
+	int virtual_left, virtual_top;      // virtual coordinates
+	int virtual_width, virtual_height;  // these are just width << zoom, height << zoom
+
+	byte zoom;
+};
+
+void SetSelectionRed(bool);
+
+/* viewport.c */
+void InitViewports(void);
+void DeleteWindowViewport(Window *w);
+void AssignWindowViewport(Window *w, int x, int y,
+	int width, int height, uint32 follow_flags, byte zoom);
+ViewPort *IsPtInWindowViewport(const Window *w, int x, int y);
+Point GetTileBelowCursor(void);
+void UpdateViewportPosition(Window *w);
+
+enum {
+	ZOOM_IN   = 0,
+	ZOOM_OUT  = 1,
+	ZOOM_NONE = 2, // hack, used to update the button status
+};
+
+bool DoZoomInOutWindow(int how, Window *w);
+void ZoomInOrOutToCursorWindow(bool in, Window * w);
+Point GetTileZoomCenterWindow(bool in, Window * w);
+void HandleZoomMessage(Window *w, const ViewPort *vp, byte widget_zoom_in, byte widget_zoom_out);
+
+static inline void MaxZoomInOut(int how, Window *w)
+{
+	while (DoZoomInOutWindow(how, w) ) {};
+}
+
+void OffsetGroundSprite(int x, int y);
+
+void DrawGroundSprite(uint32 image);
+void DrawGroundSpriteAt(uint32 image, int32 x, int32 y, byte z);
+void AddSortableSpriteToDraw(uint32 image, int x, int y, int w, int h, byte dz, byte z);
+void *AddStringToDraw(int x, int y, StringID string, uint32 params_1, uint32 params_2);
+void AddChildSpriteScreen(uint32 image, int x, int y);
+
+
+void StartSpriteCombine(void);
+void EndSpriteCombine(void);
+
+void HandleViewportClicked(const ViewPort *vp, int x, int y);
+void PlaceObject(void);
+void SetRedErrorSquare(TileIndex tile);
+void SetTileSelectSize(int w, int h);
+void SetTileSelectBigSize(int ox, int oy, int sx, int sy);
+
+void VpStartPlaceSizing(TileIndex tile, int user);
+void VpSetPresizeRange(uint from, uint to);
+void VpSetPlaceSizingLimit(int limit);
+
+Vehicle *CheckMouseOverVehicle(void);
+
+enum {
+	VPM_X_OR_Y          = 0,
+	VPM_FIX_X           = 1,
+	VPM_FIX_Y           = 2,
+	VPM_RAILDIRS        = 3,
+	VPM_X_AND_Y         = 4,
+	VPM_X_AND_Y_LIMITED = 5,
+	VPM_SIGNALDIRS      = 6
+};
+
+// viewport highlight mode (for highlighting tiles below cursor)
+enum {
+	VHM_NONE    = 0, // default
+	VHM_RECT    = 1, // rectangle (stations, depots, ...)
+	VHM_POINT   = 2, // point (lower land, raise land, level land, ...)
+	VHM_SPECIAL = 3, // special mode used for highlighting while dragging (and for tunnels/docks)
+	VHM_DRAG    = 4, // dragging items in the depot windows
+	VHM_RAIL    = 5, // rail pieces
+};
+
+void VpSelectTilesWithMethod(int x, int y, int method);
+
+// highlighting draw styles
+typedef byte HighLightStyle;
+enum HighLightStyles {
+	HT_NONE   = 0x00,
+	HT_RECT   = 0x80,
+	HT_POINT  = 0x40,
+	HT_LINE   = 0x20, /* used for autorail highlighting (longer streches)
+	                   * (uses lower bits to indicate direction) */
+	HT_RAIL   = 0x10, /* autorail (one piece)
+	                  * (uses lower bits to indicate direction) */
+	HT_DRAG_MASK = 0xF0, ///< masks the drag-type
+
+	/* lower bits (used with HT_LINE and HT_RAIL):
+	 * (see ASCII art in autorail.h for a visual interpretation) */
+	HT_DIR_X  = 0,    ///< X direction
+	HT_DIR_Y  = 1,    ///< Y direction
+	HT_DIR_HU = 2,    ///< horizontal upper
+	HT_DIR_HL = 3,    ///< horizontal lower
+	HT_DIR_VL = 4,    ///< vertical left
+	HT_DIR_VR = 5,    ///< vertical right
+	HT_DIR_MASK = 0x7 ///< masks the drag-direction
+};
+
+typedef struct TileHighlightData {
+	Point size;
+	Point outersize;
+	Point pos;
+	Point offs;
+
+	Point new_pos;
+	Point new_size;
+	Point new_outersize;
+
+	Point selend, selstart;
+
+	byte dirty;
+	byte sizelimit;
+
+	byte drawstyle;      // lower bits 0-3 are reserved for detailed highlight information information
+	byte new_drawstyle;  // only used in UpdateTileSelection() to as a buffer to compare if there was a change between old and new
+	byte next_drawstyle; // queued, but not yet drawn style
+
+	byte place_mode;
+	bool make_square_red;
+	WindowClass window_class;
+	WindowNumber window_number;
+
+	int userdata;
+	TileIndex redsq;
+} TileHighlightData;
+
+
+// common button handler
+bool HandlePlacePushButton(Window *w, int widget, uint32 cursor, int mode, PlaceProc *placeproc);
+
+VARDEF Point _tile_fract_coords;
+
+extern TileHighlightData _thd;
+
+
+void ViewportDoDraw(const ViewPort *vp, int left, int top, int right, int bottom);
+
+#endif /* VIEWPORT_H */