(svn r11684) -Codechange: split gfx.h in a type and functional header.

64 files changed, 344 insertions, 288 deletions

diff --git a/src/blitter/32bpp_anim.cpp b/src/blitter/32bpp_anim.cpp
index 0533d9fbb..0b6e86230 100644
--- a/src/blitter/32bpp_anim.cpp
+++ b/src/blitter/32bpp_anim.cpp
@@ -1,8 +1,9 @@
 /* $Id$ */
 
 #include "../stdafx.h"
-#include "../zoom.hpp"
-#include "../gfx.h"
+#include "../helpers.hpp"
+#include "../gfx_func.h"
+#include "../zoom_func.h"
 #include "../debug.h"
 #include "../table/sprites.h"
 #include "../video/video_driver.hpp"
diff --git a/src/blitter/32bpp_base.cpp b/src/blitter/32bpp_base.cpp
index ee1b76d1c..0358ae5dc 100644
--- a/src/blitter/32bpp_base.cpp
+++ b/src/blitter/32bpp_base.cpp
@@ -1,7 +1,7 @@
 /* $Id$ */
 
 #include "../stdafx.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "32bpp_base.hpp"
 
 void *Blitter_32bppBase::MoveTo(const void *video, int x, int y)
diff --git a/src/blitter/32bpp_optimized.cpp b/src/blitter/32bpp_optimized.cpp
index 0535dd640..2906158be 100644
--- a/src/blitter/32bpp_optimized.cpp
+++ b/src/blitter/32bpp_optimized.cpp
@@ -1,8 +1,8 @@
 /* $Id$ */
 
 #include "../stdafx.h"
-#include "../zoom.hpp"
-#include "../gfx.h"
+#include "../zoom_func.h"
+#include "../gfx_func.h"
 #include "../debug.h"
 #include "../table/sprites.h"
 #include "32bpp_optimized.hpp"
diff --git a/src/blitter/32bpp_simple.cpp b/src/blitter/32bpp_simple.cpp
index f00789075..f5ecba8ad 100644
--- a/src/blitter/32bpp_simple.cpp
+++ b/src/blitter/32bpp_simple.cpp
@@ -1,8 +1,8 @@
 /* $Id$ */
 
 #include "../stdafx.h"
-#include "../zoom.hpp"
-#include "../gfx.h"
+#include "../gfx_func.h"
+#include "../zoom_func.h"
 #include "../debug.h"
 #include "../table/sprites.h"
 #include "32bpp_simple.hpp"
diff --git a/src/blitter/8bpp_base.cpp b/src/blitter/8bpp_base.cpp
index 541e88176..7b813f6e7 100644
--- a/src/blitter/8bpp_base.cpp
+++ b/src/blitter/8bpp_base.cpp
@@ -1,7 +1,7 @@
 /* $Id$ */
 
 #include "../stdafx.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "8bpp_base.hpp"
 
 void Blitter_8bppBase::DrawColorMappingRect(void *dst, int width, int height, int pal)
diff --git a/src/blitter/8bpp_debug.cpp b/src/blitter/8bpp_debug.cpp
index 3a9b52d2a..da4b7998f 100644
--- a/src/blitter/8bpp_debug.cpp
+++ b/src/blitter/8bpp_debug.cpp
@@ -3,8 +3,7 @@
 /** @file 8bpp_debug.cpp */
 
 #include "../stdafx.h"
-#include "../zoom.hpp"
-#include "../gfx.h"
+#include "../zoom_func.h"
 #include "../functions.h"
 #include "8bpp_debug.hpp"
 
diff --git a/src/blitter/8bpp_optimized.cpp b/src/blitter/8bpp_optimized.cpp
index f6013fac2..b795e2891 100644
--- a/src/blitter/8bpp_optimized.cpp
+++ b/src/blitter/8bpp_optimized.cpp
@@ -3,9 +3,9 @@
 /** @file 8bpp_optimized.cpp */
 
 #include "../stdafx.h"
-#include "../zoom.hpp"
-#include "../gfx.h"
+#include "../zoom_func.h"
 #include "../debug.h"
+#include "../helpers.hpp"
 #include "8bpp_optimized.hpp"
 
 static FBlitter_8bppOptimized iFBlitter_8bppOptimized;
diff --git a/src/blitter/8bpp_simple.cpp b/src/blitter/8bpp_simple.cpp
index 010066f8a..77698cb1c 100644
--- a/src/blitter/8bpp_simple.cpp
+++ b/src/blitter/8bpp_simple.cpp
@@ -3,8 +3,7 @@
 /** @file 8bpp_simple.cpp */
 
 #include "../stdafx.h"
-#include "../zoom.hpp"
-#include "../gfx.h"
+#include "../zoom_func.h"
 #include "8bpp_simple.hpp"
 
 static FBlitter_8bppSimple iFBlitter_8bppSimple;
diff --git a/src/blitter/base.hpp b/src/blitter/base.hpp
index c9db1d9d4..cefaaa29f 100644
--- a/src/blitter/base.hpp
+++ b/src/blitter/base.hpp
@@ -5,7 +5,7 @@
 
 #include "../spritecache.h"
 #include "../spriteloader/spriteloader.hpp"
-#include "../zoom.hpp"
+#include "../zoom_type.h"
 
 enum BlitterMode {
 	BM_NORMAL,
diff --git a/src/bmp.cpp b/src/bmp.cpp
index 59d559877..dc6d11ef7 100644
--- a/src/bmp.cpp
+++ b/src/bmp.cpp
@@ -4,7 +4,6 @@
 
 #include "stdafx.h"
 #include "openttd.h"
-#include "gfx.h"
 #include "bmp.h"
 #include "core/bitmath_func.hpp"
 
diff --git a/src/bmp.h b/src/bmp.h
index d508078bc..daf02c28d 100644
--- a/src/bmp.h
+++ b/src/bmp.h
@@ -5,6 +5,8 @@
 #ifndef BMP_H
 #define BMP_H
 
+#include "gfx_type.h"
+
 struct BmpInfo {
 	uint32 offset;       ///< offset of bitmap data from .bmp file begining
 	uint32 width;        ///< bitmap width
diff --git a/src/bridge.h b/src/bridge.h
index bd85356d6..628eb603e 100644
--- a/src/bridge.h
+++ b/src/bridge.h
@@ -5,6 +5,8 @@
 #ifndef BRIDGE_H
 #define BRIDGE_H
 
+#include "gfx_type.h"
+
 enum {
 	MAX_BRIDGES = 13
 };
diff --git a/src/cargotype.h b/src/cargotype.h
index 56a974add..fe55d9099 100644
--- a/src/cargotype.h
+++ b/src/cargotype.h
@@ -6,6 +6,7 @@
 #define CARGOTYPE_H
 
 #include "cargo_type.h"
+#include "gfx_type.h"
 
 typedef uint32 CargoLabel;
 
diff --git a/src/command.cpp b/src/command.cpp
index 1b9263b37..7cac47d15 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -17,6 +17,7 @@
 #include "genworld.h"
 #include "newgrf_storage.h"
 #include "strings_func.h"
+#include "gfx_func.h"
 
 const char *_cmd_text = NULL;
 
diff --git a/src/command_type.h b/src/command_type.h
index d2a7571e9..6a2aad3d0 100644
--- a/src/command_type.h
+++ b/src/command_type.h
@@ -7,6 +7,7 @@
 
 #include "economy_type.h"
 #include "strings_type.h"
+#include "tile_type.h"
 
 /**
  * Common return value for all commands. Wraps the cost and
diff --git a/src/core/math_func.hpp b/src/core/math_func.hpp
index 242b17b95..c05e7ffeb 100644
--- a/src/core/math_func.hpp
+++ b/src/core/math_func.hpp
@@ -18,12 +18,6 @@
 #endif
 
 /**
- * The largest value that can be entered in a variable
- * @param type the type of the variable
- */
-#define MAX_UVALUE(type) ((type)~(type)0)
-
-/**
  * Returns the maximum of two values.
  *
  * This function returns the greater value of two given values.
diff --git a/src/engine.h b/src/engine.h
index 6ee3d8376..9e2815740 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -10,6 +10,7 @@
 #include "cargo_type.h"
 #include "vehicle_type.h"
 #include "command_type.h"
+#include "gfx_type.h"
 #include "sound.h"
 
 enum RailVehicleTypes {
diff --git a/src/fontcache.cpp b/src/fontcache.cpp
index 81f68f0d8..e693d0a7d 100644
--- a/src/fontcache.cpp
+++ b/src/fontcache.cpp
@@ -14,6 +14,7 @@
 #include "helpers.hpp"
 #include "spriteloader/spriteloader.hpp"
 #include "blitter/factory.hpp"
+#include "gfx_func.h"
 
 #ifdef WITH_FREETYPE
 
diff --git a/src/fontcache.h b/src/fontcache.h
index d5f283840..8df195318 100644
--- a/src/fontcache.h
+++ b/src/fontcache.h
@@ -3,7 +3,7 @@
 #ifndef FONTCACHE_H
 #define FONTCACHE_H
 
-#include "gfx.h"
+#include "gfx_type.h"
 
 /** Get the SpriteID mapped to the given font size and key */
 SpriteID GetUnicodeGlyph(FontSize size, uint32 key);
diff --git a/src/functions.h b/src/functions.h
index c4b42dc45..a1e136de9 100644
--- a/src/functions.h
+++ b/src/functions.h
@@ -8,6 +8,7 @@
 #include "core/random_func.hpp"
 #include "command_type.h"
 #include "window_type.h"
+#include "openttd.h"
 
 void UpdateTownMaxPass(Town *t);
 
diff --git a/src/gfx.cpp b/src/gfx.cpp
index 66043eec4..b84bf63b3 100644
--- a/src/gfx.cpp
+++ b/src/gfx.cpp
@@ -5,7 +5,7 @@
 #include "stdafx.h"
 #include "openttd.h"
 #include "functions.h"
-#include "gfx.h"
+#include "gfx_func.h"
 #include "spritecache.h"
 #include "string.h"
 #include "table/palettes.h"
@@ -15,7 +15,7 @@
 #include "fontcache.h"
 #include "genworld.h"
 #include "debug.h"
-#include "zoom.hpp"
+#include "zoom_func.h"
 #include "texteff.hpp"
 #include "blitter/factory.hpp"
 #include "video/video_driver.hpp"
@@ -41,6 +41,9 @@ int _pal_count_dirty;
 
 Colour _cur_palette[256];
 byte _stringwidth_table[FS_END][224];
+DrawPixelInfo *_cur_dpi;
+byte _colour_gradient[16][8];
+bool _use_dos_palette;
 
 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);
 
@@ -561,7 +564,7 @@ Dimension GetStringBoundingBox(const char *str)
  * @param x offset from left side of the screen, if negative offset from the right side
  * @param y offset from top side of the screen, if negative offset from the bottom
  * @param real_color colour of the string, see _string_colormap in
- * table/palettes.h or docs/ottd-colourtext-palette.png or the enum TextColour in gfx.h
+ * table/palettes.h or docs/ottd-colourtext-palette.png or the enum TextColour in gfx_type.h
  * @return the x-coordinates where the drawing has finished. If nothing is drawn
  * the originally passed x-coordinate is returned */
 int DoDrawString(const char *string, int x, int y, uint16 real_color)
diff --git a/src/gfx.h b/src/gfx_func.h
index a06a00d30..837be1e0c 100644
--- a/src/gfx.h
+++ b/src/gfx_func.h
@@ -1,6 +1,6 @@
 /* $Id$ */
 
-/** @file gfx.h */
+/** @file gfx_func.h Functions related to the gfx engine. */
 
 /**
  * @defgroup dirty Dirty
@@ -32,150 +32,16 @@
  */
 
 
-#ifndef GFX_H
-#define GFX_H
-
-#include "openttd.h"
-#include "core/math_func.hpp"
-#include "core/geometry_type.hpp"
-#include "core/enum_type.hpp"
-#include "zoom.hpp"
-
-enum WindowKeyCodes {
-	WKC_SHIFT = 0x8000,
-	WKC_CTRL  = 0x4000,
-	WKC_ALT   = 0x2000,
-	WKC_META  = 0x1000,
-
-	/* Special ones */
-	WKC_NONE        =  0,
-	WKC_ESC         =  1,
-	WKC_BACKSPACE   =  2,
-	WKC_INSERT      =  3,
-	WKC_DELETE      =  4,
-
-	WKC_PAGEUP      =  5,
-	WKC_PAGEDOWN    =  6,
-	WKC_END         =  7,
-	WKC_HOME        =  8,
-
-	/* Arrow keys */
-	WKC_LEFT        =  9,
-	WKC_UP          = 10,
-	WKC_RIGHT       = 11,
-	WKC_DOWN        = 12,
-
-	/* Return & tab */
-	WKC_RETURN      = 13,
-	WKC_TAB         = 14,
-
-	/* Space */
-	WKC_SPACE       = 32,
-
-	/* Function keys */
-	WKC_F1          = 33,
-	WKC_F2          = 34,
-	WKC_F3          = 35,
-	WKC_F4          = 36,
-	WKC_F5          = 37,
-	WKC_F6          = 38,
-	WKC_F7          = 39,
-	WKC_F8          = 40,
-	WKC_F9          = 41,
-	WKC_F10         = 42,
-	WKC_F11         = 43,
-	WKC_F12         = 44,
-
-	/* Backquote is the key left of "1"
-	 * we only store this key here, no matter what character is really mapped to it
-	 * on a particular keyboard. (US keyboard: ` and ~ ; German keyboard: ^ and °) */
-	WKC_BACKQUOTE   = 45,
-	WKC_PAUSE       = 46,
-
-	/* 0-9 are mapped to 48-57
-	 * A-Z are mapped to 65-90
-	 * a-z are mapped to 97-122 */
-
-	/* Numerical keyboard */
-	WKC_NUM_0       = 128,
-	WKC_NUM_1       = 129,
-	WKC_NUM_2       = 130,
-	WKC_NUM_3       = 131,
-	WKC_NUM_4       = 132,
-	WKC_NUM_5       = 133,
-	WKC_NUM_6       = 134,
-	WKC_NUM_7       = 135,
-	WKC_NUM_8       = 136,
-	WKC_NUM_9       = 137,
-	WKC_NUM_DIV     = 138,
-	WKC_NUM_MUL     = 139,
-	WKC_NUM_MINUS   = 140,
-	WKC_NUM_PLUS    = 141,
-	WKC_NUM_ENTER   = 142,
-	WKC_NUM_DECIMAL = 143,
-
-	/* Other keys */
-	WKC_SLASH       = 144, ///< / Forward slash
-	WKC_SEMICOLON   = 145, ///< ; Semicolon
-	WKC_EQUALS      = 146, ///< = Equals
-	WKC_L_BRACKET   = 147, ///< [ Left square bracket
-	WKC_BACKSLASH   = 148, ///< \ Backslash
-	WKC_R_BRACKET   = 149, ///< ] Right square bracket
-	WKC_SINGLEQUOTE = 150, ///< ' Single quote
-	WKC_COMMA       = 151, ///< , Comma
-	WKC_PERIOD      = 152, ///< . Period
-	WKC_MINUS       = 153, ///< - Minus
-};
+#ifndef GFX_FUNC_H
+#define GFX_FUNC_H
+
+#include "gfx_type.h"
+#include "strings_type.h"
 
 void GameLoop();
 
 void CreateConsole();
 
-/** A single sprite of a list of animated cursors */
-struct AnimCursor {
-	static const CursorID LAST = MAX_UVALUE(CursorID);
-	CursorID sprite;   ///< Must be set to LAST_ANIM when it is the last sprite of the loop
-	byte display_time; ///< Amount of ticks this sprite will be shown
-};
-
-struct CursorVars {
-	Point pos, size, offs, delta; ///< position, size, offset from top-left, and movement
-	Point draw_pos, draw_size;    ///< position and size bounding-box for drawing
-	SpriteID sprite; ///< current image of cursor
-	SpriteID pal;
-
-	int wheel;       ///< mouse wheel movement
-
-	/* We need two different vars to keep track of how far the scrollwheel moved.
-	 * OSX uses this for scrolling around the map. */
-	int v_wheel;
-	int h_wheel;
-
-	const AnimCursor *animate_list; ///< in case of animated cursor, list of frames
-	const AnimCursor *animate_cur;  ///< in case of animated cursor, current frame
-	uint animate_timeout;           ///< in case of animated cursor, number of ticks to show the current cursor
-
-	bool visible;    ///< cursor is visible
-	bool dirty;      ///< the rect occupied by the mouse is dirty (redraw)
-	bool fix_at;     ///< mouse is moving, but cursor is not (used for scrolling)
-	bool in_window;  ///< mouse inside this window, determines drawing logic
-};
-
-struct DrawPixelInfo {
-	void *dst_ptr;
-	int left, top, width, height;
-	int pitch;
-	ZoomLevel zoom;
-};
-
-struct Colour {
-	byte r;
-	byte g;
-	byte b;
-};
-
-
-
 extern byte _dirkeys;        ///< 1 = left, 2 = up, 4 = right, 8 = down
 extern bool _fullscreen;
 extern CursorVars _cursor;
@@ -211,26 +77,9 @@ void HandleExitGameRequest();
 void GameSizeChanged();
 void UndrawMouseCursor();
 
-enum FontSize {
-	FS_NORMAL,
-	FS_SMALL,
-	FS_LARGE,
-	FS_END,
-};
-DECLARE_POSTFIX_INCREMENT(FontSize);
-
 void RedrawScreenRect(int left, int top, int right, int bottom);
 void GfxScroll(int left, int top, int width, int height, int xo, int yo);
 
-/**
- * Used to only draw a part of the sprite.
- * Draw the subsprite in the rect (sprite_x_offset + left, sprite_y_offset + top) to (sprite_x_offset + right, sprite_y_offset + bottom).
- * Both corners are included in the drawing area.
- */
-struct SubSprite {
-	int left, top, right, bottom;
-};
-
 void DrawSprite(SpriteID img, SpriteID pal, int x, int y, const SubSprite *sub = NULL);
 
 /* XXX doesn't really belong here, but the only
@@ -320,59 +169,14 @@ static inline byte GetCharacterHeight(FontSize size)
 	}
 }
 
-VARDEF DrawPixelInfo *_cur_dpi;
-
-enum {
-	COLOUR_DARK_BLUE,
-	COLOUR_PALE_GREEN,
-	COLOUR_PINK,
-	COLOUR_YELLOW,
-	COLOUR_RED,
-	COLOUR_LIGHT_BLUE,
-	COLOUR_GREEN,
-	COLOUR_DARK_GREEN,
-	COLOUR_BLUE,
-	COLOUR_CREAM,
-	COLOUR_MAUVE,
-	COLOUR_PURPLE,
-	COLOUR_ORANGE,
-	COLOUR_BROWN,
-	COLOUR_GREY,
-	COLOUR_WHITE
-};
-
-/** Colour of the strings, see _string_colormap in table/palettes.h or docs/ottd-colourtext-palette.png */
-enum TextColour {
-	TC_FROMSTRING  = 0x00,
-	TC_BLUE        = 0x00,
-	TC_SILVER      = 0x01,
-	TC_GOLD        = 0x02,
-	TC_RED         = 0x03,
-	TC_PURPLE      = 0x04,
-	TC_LIGHT_BROWN = 0x05,
-	TC_ORANGE      = 0x06,
-	TC_GREEN       = 0x07,
-	TC_YELLOW      = 0x08,
-	TC_DARK_GREEN  = 0x09,
-	TC_CREAM       = 0x0A,
-	TC_BROWN       = 0x0B,
-	TC_WHITE       = 0x0C,
-	TC_LIGHT_BLUE  = 0x0D,
-	TC_GREY        = 0x0E,
-	TC_DARK_BLUE   = 0x0F,
-	TC_BLACK       = 0x10,
-};
+extern DrawPixelInfo *_cur_dpi;
 
 /**
  * All 16 colour gradients
  * 8 colours per gradient from darkest (0) to lightest (7)
  */
-VARDEF byte _colour_gradient[16][8];
-
-VARDEF bool _use_dos_palette;
+extern byte _colour_gradient[16][8];
 
-enum StringColorFlags {
-	IS_PALETTE_COLOR = 0x100, ///< color value is already a real palette color index, not an index of a StringColor
-};
+extern bool _use_dos_palette;
 
-#endif /* GFX_H */
+#endif /* GFX_FUNC_H */
diff --git a/src/gfx_type.h b/src/gfx_type.h
new file mode 100644
index 000000000..4e6cf28ff
--- /dev/null
+++ b/src/gfx_type.h
@@ -0,0 +1,210 @@
+/* $Id$ */
+
+/** @file gfx_type.h Types related to the graphics and/or input devices. */
+
+#ifndef GFX_TYPE_H
+#define GFX_TYPE_H
+
+#include "core/enum_type.hpp"
+#include "core/geometry_type.hpp"
+#include "zoom_type.h"
+
+typedef uint32 SpriteID;      ///< The number of a sprite, without mapping bits and colortables
+struct PalSpriteID {
+	SpriteID sprite;
+	SpriteID pal;
+};
+typedef int32 CursorID;
+
+enum WindowKeyCodes {
+	WKC_SHIFT = 0x8000,
+	WKC_CTRL  = 0x4000,
+	WKC_ALT   = 0x2000,
+	WKC_META  = 0x1000,
+
+	/* Special ones */
+	WKC_NONE        =  0,
+	WKC_ESC         =  1,
+	WKC_BACKSPACE   =  2,
+	WKC_INSERT      =  3,
+	WKC_DELETE      =  4,
+
+	WKC_PAGEUP      =  5,
+	WKC_PAGEDOWN    =  6,
+	WKC_END         =  7,
+	WKC_HOME        =  8,
+
+	/* Arrow keys */
+	WKC_LEFT        =  9,
+	WKC_UP          = 10,
+	WKC_RIGHT       = 11,
+	WKC_DOWN        = 12,
+
+	/* Return & tab */
+	WKC_RETURN      = 13,
+	WKC_TAB         = 14,
+
+	/* Space */
+	WKC_SPACE       = 32,
+
+	/* Function keys */
+	WKC_F1          = 33,
+	WKC_F2          = 34,
+	WKC_F3          = 35,
+	WKC_F4          = 36,
+	WKC_F5          = 37,
+	WKC_F6          = 38,
+	WKC_F7          = 39,
+	WKC_F8          = 40,
+	WKC_F9          = 41,
+	WKC_F10         = 42,
+	WKC_F11         = 43,
+	WKC_F12         = 44,
+
+	/* Backquote is the key left of "1"
+	 * we only store this key here, no matter what character is really mapped to it
+	 * on a particular keyboard. (US keyboard: ` and ~ ; German keyboard: ^ and °) */
+	WKC_BACKQUOTE   = 45,
+	WKC_PAUSE       = 46,
+
+	/* 0-9 are mapped to 48-57
+	 * A-Z are mapped to 65-90
+	 * a-z are mapped to 97-122 */
+
+	/* Numerical keyboard */
+	WKC_NUM_0       = 128,
+	WKC_NUM_1       = 129,
+	WKC_NUM_2       = 130,
+	WKC_NUM_3       = 131,
+	WKC_NUM_4       = 132,
+	WKC_NUM_5       = 133,
+	WKC_NUM_6       = 134,
+	WKC_NUM_7       = 135,
+	WKC_NUM_8       = 136,
+	WKC_NUM_9       = 137,
+	WKC_NUM_DIV     = 138,
+	WKC_NUM_MUL     = 139,
+	WKC_NUM_MINUS   = 140,
+	WKC_NUM_PLUS    = 141,
+	WKC_NUM_ENTER   = 142,
+	WKC_NUM_DECIMAL = 143,
+
+	/* Other keys */
+	WKC_SLASH       = 144, ///< / Forward slash
+	WKC_SEMICOLON   = 145, ///< ; Semicolon
+	WKC_EQUALS      = 146, ///< = Equals
+	WKC_L_BRACKET   = 147, ///< [ Left square bracket
+	WKC_BACKSLASH   = 148, ///< \ Backslash
+	WKC_R_BRACKET   = 149, ///< ] Right square bracket
+	WKC_SINGLEQUOTE = 150, ///< ' Single quote
+	WKC_COMMA       = 151, ///< , Comma
+	WKC_PERIOD      = 152, ///< . Period
+	WKC_MINUS       = 153, ///< - Minus
+};
+
+/** A single sprite of a list of animated cursors */
+struct AnimCursor {
+	static const CursorID LAST = MAX_UVALUE(CursorID);
+	CursorID sprite;   ///< Must be set to LAST_ANIM when it is the last sprite of the loop
+	byte display_time; ///< Amount of ticks this sprite will be shown
+};
+
+struct CursorVars {
+	Point pos, size, offs, delta; ///< position, size, offset from top-left, and movement
+	Point draw_pos, draw_size;    ///< position and size bounding-box for drawing
+	SpriteID sprite; ///< current image of cursor
+	SpriteID pal;
+
+	int wheel;       ///< mouse wheel movement
+
+	/* We need two different vars to keep track of how far the scrollwheel moved.
+	 * OSX uses this for scrolling around the map. */
+	int v_wheel;
+	int h_wheel;
+
+	const AnimCursor *animate_list; ///< in case of animated cursor, list of frames
+	const AnimCursor *animate_cur;  ///< in case of animated cursor, current frame
+	uint animate_timeout;           ///< in case of animated cursor, number of ticks to show the current cursor
+
+	bool visible;    ///< cursor is visible
+	bool dirty;      ///< the rect occupied by the mouse is dirty (redraw)
+	bool fix_at;     ///< mouse is moving, but cursor is not (used for scrolling)
+	bool in_window;  ///< mouse inside this window, determines drawing logic
+};
+
+struct DrawPixelInfo {
+	void *dst_ptr;
+	int left, top, width, height;
+	int pitch;
+	ZoomLevel zoom;
+};
+
+struct Colour {
+	byte r;
+	byte g;
+	byte b;
+};
+
+enum FontSize {
+	FS_NORMAL,
+	FS_SMALL,
+	FS_LARGE,
+	FS_END,
+};
+DECLARE_POSTFIX_INCREMENT(FontSize);
+
+/**
+ * Used to only draw a part of the sprite.
+ * Draw the subsprite in the rect (sprite_x_offset + left, sprite_y_offset + top) to (sprite_x_offset + right, sprite_y_offset + bottom).
+ * Both corners are included in the drawing area.
+ */
+struct SubSprite {
+	int left, top, right, bottom;
+};
+
+enum {
+	COLOUR_DARK_BLUE,
+	COLOUR_PALE_GREEN,
+	COLOUR_PINK,
+	COLOUR_YELLOW,
+	COLOUR_RED,
+	COLOUR_LIGHT_BLUE,
+	COLOUR_GREEN,
+	COLOUR_DARK_GREEN,
+	COLOUR_BLUE,
+	COLOUR_CREAM,
+	COLOUR_MAUVE,
+	COLOUR_PURPLE,
+	COLOUR_ORANGE,
+	COLOUR_BROWN,
+	COLOUR_GREY,
+	COLOUR_WHITE
+};
+
+/** Colour of the strings, see _string_colormap in table/palettes.h or docs/ottd-colourtext-palette.png */
+enum TextColour {
+	TC_FROMSTRING  = 0x00,
+	TC_BLUE        = 0x00,
+	TC_SILVER      = 0x01,
+	TC_GOLD        = 0x02,
+	TC_RED         = 0x03,
+	TC_PURPLE      = 0x04,
+	TC_LIGHT_BROWN = 0x05,
+	TC_ORANGE      = 0x06,
+	TC_GREEN       = 0x07,
+	TC_YELLOW      = 0x08,
+	TC_DARK_GREEN  = 0x09,
+	TC_CREAM       = 0x0A,
+	TC_BROWN       = 0x0B,
+	TC_WHITE       = 0x0C,
+	TC_LIGHT_BLUE  = 0x0D,
+	TC_GREY        = 0x0E,
+	TC_DARK_BLUE   = 0x0F,
+	TC_BLACK       = 0x10,
+};
+
+enum StringColorFlags {
+	IS_PALETTE_COLOR = 0x100, ///< color value is already a real palette color index, not an index of a StringColor
+};
+
+#endif /* GFX_TYPE_H */
diff --git a/src/gfxinit.cpp b/src/gfxinit.cpp
index a6694dece..b98ea8223 100644
--- a/src/gfxinit.cpp
+++ b/src/gfxinit.cpp
@@ -16,6 +16,7 @@
 #include "md5.h"
 #include "variables.h"
 #include "fontcache.h"
+#include "gfx_func.h"
 #include <string.h>
 
 struct MD5File {
diff --git a/src/gfxinit.h b/src/gfxinit.h
index a59cc6259..2ebeac69f 100644
--- a/src/gfxinit.h
+++ b/src/gfxinit.h
@@ -5,6 +5,8 @@
 #ifndef GFXINIT_H
 #define GFXINIT_H
 
+#include "gfx_type.h"
+
 void CheckExternalFiles();
 void GfxLoadSprites();
 void LoadSpritesIndexed(int file_index, uint *sprite_id, const SpriteID *index_tbl);
diff --git a/src/gui.h b/src/gui.h
index ad02b2ef5..d48e83ee1 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -8,7 +8,7 @@
 #include "string.h"
 #include "window_type.h"
 #include "vehicle_type.h"
-#include "gfx.h"
+#include "gfx_type.h"
 
 /* main_gui.cpp */
 void CcPlaySound10(bool success, TileIndex tile, uint32 p1, uint32 p2);
diff --git a/src/heightmap.cpp b/src/heightmap.cpp
index b6a62edb4..b287748f6 100644
--- a/src/heightmap.cpp
+++ b/src/heightmap.cpp
@@ -15,6 +15,7 @@
 #include "saveload.h"
 #include "bmp.h"
 #include "helpers.hpp"
+#include "gfx_func.h"
 
 /**
  * Convert RGB colors to Grayscale using 29.9% Red, 58.7% Green, 11.4% Blue
diff --git a/src/main_gui.cpp b/src/main_gui.cpp
index d511d197c..a5505e2e5 100644
--- a/src/main_gui.cpp
+++ b/src/main_gui.cpp
@@ -50,6 +50,7 @@
 #include "industry.h"
 #include "transparency.h"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 static int _rename_id = 1;
 static int _rename_what = -1;
diff --git a/src/misc.cpp b/src/misc.cpp
index 3742f971d..1827f17d4 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -25,6 +25,7 @@
 #include "group.h"
 #include "viewport.h"
 #include "economy_func.h"
+#include "zoom_func.h"
 
 char _name_array[512][32];
 
diff --git a/src/misc/dbg_helpers.cpp b/src/misc/dbg_helpers.cpp
index 2e95ee1b8..a07c5ce60 100644
--- a/src/misc/dbg_helpers.cpp
+++ b/src/misc/dbg_helpers.cpp
@@ -2,6 +2,7 @@
 
 /** @file dbg_helpers.cpp */
 #include "../stdafx.h"
+#include "../openttd.h"
 #include "../direction_type.h"
 #include "../rail.h"
 #include "../rail_map.h"
diff --git a/src/misc_cmd.cpp b/src/misc_cmd.cpp
index 2128a6f32..e8e0d7630 100644
--- a/src/misc_cmd.cpp
+++ b/src/misc_cmd.cpp
@@ -19,6 +19,7 @@
 #include "player_face.h"
 #include "strings_func.h"
 #include "vehicle.h"
+#include "gfx_func.h"
 
 /** Change the player's face.
  * @param tile unused
diff --git a/src/misc_gui.cpp b/src/misc_gui.cpp
index 94fb1ce25..9861c4d44 100644
--- a/src/misc_gui.cpp
+++ b/src/misc_gui.cpp
@@ -40,6 +40,7 @@
 #include "fileio.h"
 #include "fios.h"
 #include "tile_cmd.h"
+#include "zoom_func.h"
 
 /* Variables to display file lists */
 FiosItem *_fios_list;
diff --git a/src/network/network_gui.cpp b/src/network/network_gui.cpp
index 81418592e..20e8f18a9 100644
--- a/src/network/network_gui.cpp
+++ b/src/network/network_gui.cpp
@@ -19,7 +19,6 @@
 #include "../gui.h"
 #include "../window_gui.h"
 #include "../textbuf_gui.h"
-#include "../gfx.h"
 #include "../variables.h"
 #include "network_server.h"
 #include "network_udp.h"
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 2520e6c01..8ad70d175 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -47,6 +47,7 @@
 #include "fios.h"
 #include "rail.h"
 #include "strings_func.h"
+#include "gfx_func.h"
 
 /* TTDPatch extended GRF format codec
  * (c) Petr Baudis 2004 (GPL'd)
diff --git a/src/newgrf_station.cpp b/src/newgrf_station.cpp
index d0167c71b..788a07207 100644
--- a/src/newgrf_station.cpp
+++ b/src/newgrf_station.cpp
@@ -23,7 +23,7 @@
 #include "cargotype.h"
 #include "town_map.h"
 #include "newgrf_town.h"
-#include "gfx.h"
+#include "gfx_func.h"
 
 static StationClass station_classes[STAT_CLASS_MAX];
 
diff --git a/src/oldloader.cpp b/src/oldloader.cpp
index ba0ab6112..91711f3a1 100644
--- a/src/oldloader.cpp
+++ b/src/oldloader.cpp
@@ -24,7 +24,7 @@
 #include "newgrf_config.h"
 #include "ai/ai.h"
 #include "date.h"
-#include "zoom.hpp"
+#include "zoom_func.h"
 
 enum {
 	HEADER_SIZE = 49,
diff --git a/src/openttd.cpp b/src/openttd.cpp
index cac5b908b..d1e85eb15 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -64,6 +64,7 @@
 #include "music/music_driver.hpp"
 #include "video/video_driver.hpp"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 #include "bridge_map.h"
 #include "clear_map.h"
diff --git a/src/openttd.h b/src/openttd.h
index 7ad6de5b9..3df5e7403 100644
--- a/src/openttd.h
+++ b/src/openttd.h
@@ -26,12 +26,6 @@ struct DrawPixelInfo;
 struct Group;
 typedef byte VehicleOrderID;  ///< The index of an order within its current vehicle (not pool related)
 typedef byte LandscapeID;
-typedef uint32 SpriteID;      ///< The number of a sprite, without mapping bits and colortables
-struct PalSpriteID {
-	SpriteID sprite;
-	SpriteID pal;
-};
-typedef int32 CursorID;
 typedef uint16 EngineID;
 typedef uint16 UnitID;
 
diff --git a/src/os/macosx/splash.cpp b/src/os/macosx/splash.cpp
index f342f32d5..747ea59b9 100644
--- a/src/os/macosx/splash.cpp
+++ b/src/os/macosx/splash.cpp
@@ -5,7 +5,7 @@
 #include "../../variables.h"
 #include "../../debug.h"
 #include "../../functions.h"
-#include "../../gfx.h"
+#include "../../gfx_func.h"
 #include "../../fileio.h"
 #include "../../blitter/factory.hpp"
 
diff --git a/src/players.cpp b/src/players.cpp
index b54ef6a6c..320e8f0f0 100644
--- a/src/players.cpp
+++ b/src/players.cpp
@@ -29,7 +29,7 @@
 #include "window_func.h"
 #include "tile_map.h"
 #include "strings_func.h"
-#include "gfx.h"
+#include "gfx_func.h"
 
 /**
  * Sets the local player and updates the patch settings that are set on a
diff --git a/src/rail.h b/src/rail.h
index bffda08e7..9975507fc 100644
--- a/src/rail.h
+++ b/src/rail.h
@@ -8,9 +8,10 @@
 #include "rail_type.h"
 #include "track_type.h"
 #include "vehicle_type.h"
+#include "gfx_type.h"
 #include "core/bitmath_func.hpp"
-#include "variables.h"
 #include "economy_func.h"
+#include "variables.h"
 
 /** This struct contains all the info that is needed to draw and construct tracks.
  */
diff --git a/src/saveload.cpp b/src/saveload.cpp
index 73e688701..22cb8588d 100644
--- a/src/saveload.cpp
+++ b/src/saveload.cpp
@@ -28,6 +28,7 @@
 #include "table/strings.h"
 #include "window_func.h"
 #include "strings_func.h"
+#include "gfx_func.h"
 #include <list>
 
 extern const uint16 SAVEGAME_VERSION = 83;
diff --git a/src/screenshot.cpp b/src/screenshot.cpp
index f88c3b528..c77dce722 100644
--- a/src/screenshot.cpp
+++ b/src/screenshot.cpp
@@ -16,6 +16,7 @@
 #include "blitter/factory.hpp"
 #include "fileio.h"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 char _screenshot_format_name[8];
 uint _num_screenshot_formats;
diff --git a/src/signs.cpp b/src/signs.cpp
index 4ea465fb4..ba9e80786 100644
--- a/src/signs.cpp
+++ b/src/signs.cpp
@@ -16,6 +16,7 @@
 #include "misc/autoptr.hpp"
 #include "strings_func.h"
 #include "viewport.h"
+#include "zoom_func.h"
 
 SignID _new_sign_id;
 uint _total_signs;
diff --git a/src/smallmap_gui.cpp b/src/smallmap_gui.cpp
index a5ba7d205..0e6b340af 100644
--- a/src/smallmap_gui.cpp
+++ b/src/smallmap_gui.cpp
@@ -27,6 +27,7 @@
 #include "blitter/factory.hpp"
 #include "tunnelbridge_map.h"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 
 static const Widget _smallmap_widgets[] = {
diff --git a/src/sprite.h b/src/sprite.h
index 00ceed3ee..686db5e75 100644
--- a/src/sprite.h
+++ b/src/sprite.h
@@ -5,6 +5,8 @@
 #ifndef SPRITE_H
 #define SPRITE_H
 
+#include "gfx_type.h"
+
 #define GENERAL_SPRITE_COLOR(color) ((color) + PALETTE_RECOLOR_START)
 #define PLAYER_SPRITE_COLOR(owner) (GENERAL_SPRITE_COLOR(_player_colors[owner]))
 
diff --git a/src/spritecache.h b/src/spritecache.h
index d264ae210..371fc5601 100644
--- a/src/spritecache.h
+++ b/src/spritecache.h
@@ -5,6 +5,8 @@
 #ifndef SPRITECACHE_H
 #define SPRITECACHE_H
 
+#include "gfx_type.h"
+
 struct Sprite {
 	byte height;
 	uint16 width;
diff --git a/src/spriteloader/grf.cpp b/src/spriteloader/grf.cpp
index e41732b50..e225ea52d 100644
--- a/src/spriteloader/grf.cpp
+++ b/src/spriteloader/grf.cpp
@@ -3,7 +3,7 @@
 /** @file grf.cpp */
 
 #include "../stdafx.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "../fileio.h"
 #include "../debug.h"
 #include "grf.hpp"
diff --git a/src/spriteloader/png.cpp b/src/spriteloader/png.cpp
index 7429dda68..0a626d5fe 100644
--- a/src/spriteloader/png.cpp
+++ b/src/spriteloader/png.cpp
@@ -5,7 +5,7 @@
 #ifdef WITH_PNG
 
 #include "../stdafx.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "../fileio.h"
 #include "../variables.h"
 #include "../debug.h"
diff --git a/src/station.cpp b/src/station.cpp
index f9c56b7dd..e713ceee8 100644
--- a/src/station.cpp
+++ b/src/station.cpp
@@ -32,6 +32,7 @@
 #include "cargotype.h"
 #include "roadveh.h"
 #include "station_gui.h"
+#include "zoom_func.h"
 
 Station::Station(TileIndex tile)
 {
diff --git a/src/stdafx.h b/src/stdafx.h
index f3a277d5e..90bd721cd 100644
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -374,4 +374,10 @@ assert_compile(sizeof(uint8)  == 1);
 	#define MAX_PATH 260
 #endif
 
+/**
+ * The largest value that can be entered in a variable
+ * @param type the type of the variable
+ */
+#define MAX_UVALUE(type) ((type)~(type)0)
+
 #endif /* STDAFX_H */
diff --git a/src/table/sprites.h b/src/table/sprites.h
index 2d352ebd2..02d931df3 100644
--- a/src/table/sprites.h
+++ b/src/table/sprites.h
@@ -32,6 +32,8 @@
  * @todo Split the "Sprites" enum into smaller chunks and document them
  */
 
+#include "../gfx_type.h"
+
 enum Sprites {
 	SPR_SELECT_TILE  = 752,
 	SPR_DOT          = 774, // corner marker for lower/raise land
diff --git a/src/transparency.h b/src/transparency.h
index fff77d70d..344946769 100644
--- a/src/transparency.h
+++ b/src/transparency.h
@@ -5,6 +5,8 @@
 #ifndef TRANSPARENCY_H
 #define TRANSPARENCY_H
 
+#include "gfx_func.h"
+
 /**
  * Transparency option bits: which position in _transparency_opt stands for which transparency.
  * If you change the order, change the order of the ShowTransparencyToolbar() stuff in transparency_gui.cpp too.
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index 8cd999bf9..79138d85c 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -42,6 +42,7 @@
 #include "group.h"
 #include "order.h"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 #define INVALID_COORD (0x7fffffff)
 #define GEN_HASH(x, y) ((GB((y), 6, 6) << 6) + GB((x), 7, 6))
diff --git a/src/vehicle.h b/src/vehicle.h
index 0b7f35d67..b5ba98a49 100644
--- a/src/vehicle.h
+++ b/src/vehicle.h
@@ -6,16 +6,17 @@
 #define VEHICLE_H
 
 #include "vehicle_type.h"
-#include "oldpool.h"
-#include "order.h"
 #include "track_type.h"
 #include "rail_type.h"
 #include "road_type.h"
 #include "cargo_type.h"
 #include "window_type.h"
+#include "gfx_type.h"
+#include "command_type.h"
+#include "oldpool.h"
+#include "order.h"
 #include "cargopacket.h"
 #include "texteff.hpp"
-#include "command_type.h"
 
 /** Road vehicle states */
 enum RoadVehicleStates {
diff --git a/src/video/dedicated_v.cpp b/src/video/dedicated_v.cpp
index f2d2aecab..70732bb73 100644
--- a/src/video/dedicated_v.cpp
+++ b/src/video/dedicated_v.cpp
@@ -7,7 +7,7 @@
 #include "../openttd.h"
 #include "../debug.h"
 #include "../functions.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "../network/network.h"
 #include "../console.h"
 #include "../variables.h"
diff --git a/src/video/null_v.cpp b/src/video/null_v.cpp
index 2250cbaf0..7d2fa512d 100644
--- a/src/video/null_v.cpp
+++ b/src/video/null_v.cpp
@@ -2,7 +2,7 @@
 
 #include "../stdafx.h"
 #include "../openttd.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "../variables.h"
 #include "../debug.h"
 #include "../blitter/factory.hpp"
diff --git a/src/video/sdl_v.cpp b/src/video/sdl_v.cpp
index 9d4a7986a..05fb771b7 100644
--- a/src/video/sdl_v.cpp
+++ b/src/video/sdl_v.cpp
@@ -7,7 +7,7 @@
 #include "../openttd.h"
 #include "../debug.h"
 #include "../functions.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "../sdl.h"
 #include "../variables.h"
 #include "../blitter/factory.hpp"
diff --git a/src/video/win32_v.cpp b/src/video/win32_v.cpp
index 1fc344fac..d3d80daee 100644
--- a/src/video/win32_v.cpp
+++ b/src/video/win32_v.cpp
@@ -3,7 +3,7 @@
 #include "../stdafx.h"
 #include "../openttd.h"
 #include "../functions.h"
-#include "../gfx.h"
+#include "../gfx_func.h"
 #include "../variables.h"
 #include "../win32.h"
 #include "../blitter/factory.hpp"
diff --git a/src/viewport.cpp b/src/viewport.cpp
index b3a7e7d20..78b7f03a9 100644
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -25,6 +25,7 @@
 #include "blitter/factory.hpp"
 #include "transparency.h"
 #include "strings_func.h"
+#include "zoom_func.h"
 
 #define VIEWPORT_DRAW_MEM (65536 * 2)
 
diff --git a/src/viewport.h b/src/viewport.h
index 451c0a42d..32b0c50be 100644
--- a/src/viewport.h
+++ b/src/viewport.h
@@ -5,10 +5,10 @@
 #ifndef VIEWPORT_H
 #define VIEWPORT_H
 
-#include "zoom.hpp"
+#include "zoom_type.h"
 #include "window_type.h"
 #include "vehicle_type.h"
-#include "gfx.h"
+#include "gfx_func.h"
 
 struct ViewPort {
 	int left,top;                       // screen coordinates for the viewport
diff --git a/src/window.cpp b/src/window.cpp
index 6df6609c4..4a9a4e600 100644
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -17,6 +17,7 @@
 #include "helpers.hpp"
 #include "blitter/factory.hpp"
 #include "window_gui.h"
+#include "zoom_func.h"
 
 /* delta between mouse cursor and upper left corner of dragged window */
 static Point _drag_delta;
diff --git a/src/zoom.hpp b/src/zoom_func.h
index 56e3c6099..4a4fe83ff 100644
--- a/src/zoom.hpp
+++ b/src/zoom_func.h
@@ -2,41 +2,13 @@
 
 /** @file zoom.hpp */
 
-#ifndef ZOOM_HPP
-#define ZOOM_HPP
+#ifndef ZOOM_FUNC_H
+#define ZOOM_FUNC_H
 
-#include "core/enum_type.hpp"
-
-enum ZoomLevel {
-	/* Our possible zoom-levels */
-	ZOOM_LVL_BEGIN  = 0,
-	ZOOM_LVL_NORMAL = 0,
-	ZOOM_LVL_OUT_2X,
-	ZOOM_LVL_OUT_4X,
-	ZOOM_LVL_OUT_8X,
-	ZOOM_LVL_END,
-
-	/* Here we define in which zoom viewports are */
-	ZOOM_LVL_VIEWPORT = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_NEWS     = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_INDUSTRY = ZOOM_LVL_OUT_2X,
-	ZOOM_LVL_TOWN     = ZOOM_LVL_OUT_2X,
-	ZOOM_LVL_AIRCRAFT = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_SHIP     = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_TRAIN    = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_ROADVEH  = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_WORLD_SCREENSHOT = ZOOM_LVL_NORMAL,
-
-	ZOOM_LVL_DETAIL   = ZOOM_LVL_OUT_2X, ///< All zoomlevels below or equal to this, will result in details on the screen, like road-work, ...
-
-	ZOOM_LVL_MIN      = ZOOM_LVL_NORMAL,
-	ZOOM_LVL_MAX      = ZOOM_LVL_OUT_8X,
-};
+#include "zoom_type.h"
 
 extern ZoomLevel _saved_scrollpos_zoom;
 
-DECLARE_POSTFIX_INCREMENT(ZoomLevel)
-
 /**
  * Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL)
  * When shifting right, value is rounded up
@@ -91,4 +63,4 @@ static inline int UnScaleByZoomLower(int value, ZoomLevel zoom)
 	return (zoom > ZOOM_LVL_NORMAL) ? value >> izoom : value << -izoom;
 }
 
-#endif /* ZOOM_HPP */
+#endif /* ZOOM_FUNC_H */
diff --git a/src/zoom_type.h b/src/zoom_type.h
new file mode 100644
index 000000000..2929e7309
--- /dev/null
+++ b/src/zoom_type.h
@@ -0,0 +1,37 @@
+/* $Id$ */
+
+/** @file zoom_type.h Types related to zooming in and out. */
+
+#ifndef ZOOM_TYPE_H
+#define ZOOM_TYPE_H
+
+#include "core/enum_type.hpp"
+
+enum ZoomLevel {
+	/* Our possible zoom-levels */
+	ZOOM_LVL_BEGIN  = 0,
+	ZOOM_LVL_NORMAL = 0,
+	ZOOM_LVL_OUT_2X,
+	ZOOM_LVL_OUT_4X,
+	ZOOM_LVL_OUT_8X,
+	ZOOM_LVL_END,
+
+	/* Here we define in which zoom viewports are */
+	ZOOM_LVL_VIEWPORT = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_NEWS     = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_INDUSTRY = ZOOM_LVL_OUT_2X,
+	ZOOM_LVL_TOWN     = ZOOM_LVL_OUT_2X,
+	ZOOM_LVL_AIRCRAFT = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_SHIP     = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_TRAIN    = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_ROADVEH  = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_WORLD_SCREENSHOT = ZOOM_LVL_NORMAL,
+
+	ZOOM_LVL_DETAIL   = ZOOM_LVL_OUT_2X, ///< All zoomlevels below or equal to this, will result in details on the screen, like road-work, ...
+
+	ZOOM_LVL_MIN      = ZOOM_LVL_NORMAL,
+	ZOOM_LVL_MAX      = ZOOM_LVL_OUT_8X,
+};
+DECLARE_POSTFIX_INCREMENT(ZoomLevel)
+
+#endif /* ZOOM_TYPE_H */