[wxWidgets.git] / contrib / src / stc / scintilla / include / Platform.h

// Scintilla source code edit control
/** @file Platform.h
 ** Interface to platform facilities. Also includes some basic utilities.
 ** Implemented in PlatGTK.cxx for GTK+/Linux, PlatWin.cxx for Windows, and PlatWX.cxx for wxWindows.
 **/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.

#ifndef PLATFORM_H
#define PLATFORM_H

// PLAT_GTK = GTK+ on Linux or Win32
// PLAT_GTK_WIN32 is defined additionally when running PLAT_GTK under Win32
// PLAT_WIN = Win32 API on Win32 OS
// PLAT_WX is wxWindows on any supported platform

#define PLAT_GTK 0
#define PLAT_GTK_WIN32 0
#define PLAT_WIN 0
#define PLAT_WX  0

#if defined(__WX__)
#undef PLAT_WX
#define PLAT_WX  1

#elif defined(GTK)
#undef PLAT_GTK
#define PLAT_GTK 1

#ifdef _MSC_VER
#undef PLAT_GTK_WIN32
#define PLAT_GTK_WIN32 1
#endif

#else
#undef PLAT_WIN
#define PLAT_WIN 1

#endif


// Include the main header for each platform

#if PLAT_GTK
#ifdef _MSC_VER
#pragma warning(disable: 4505 4514 4710 4800)
#endif
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#endif

#if PLAT_WIN
#define _WIN32_WINNT  0x0400 // Otherwise some required stuff gets ifdef'd out
// Vassili Bourdo: shut up annoying Visual C++ warnings:
#ifdef _MSC_VER
#pragma warning(disable: 4244 4309 4710 4800)
#endif
#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#endif

#if PLAT_WX
#include <wx/wx.h>
#endif

// Underlying the implementation of the platform classes are platform specific types.
// Sometimes these need to be passed around by client code so they are defined here

#if PLAT_GTK
typedef GdkColor ColourID;
typedef GdkFont* FontID;
typedef GdkDrawable* SurfaceID;
typedef GtkWidget* WindowID;
typedef GtkItemFactory* MenuID;
#endif

#if PLAT_WIN
typedef COLORREF ColourID;
typedef HFONT FontID;
typedef HDC SurfaceID;
typedef HWND WindowID;
typedef HMENU MenuID;
#endif

#if PLAT_WX
typedef wxColour ColourID;
typedef wxFont* FontID;
typedef wxDC* SurfaceID;
typedef wxWindow* WindowID;
typedef wxMenu* MenuID;
#endif

/**
 * A geometric point class.
 * Point is exactly the same as the Win32 POINT and GTK+ GdkPoint so can be used interchangeably.
 */
class Point {
public:
	int x;
	int y;

	Point(int x_=0, int y_=0) : x(x_), y(y_) {
	}

	// Other automatically defined methods (assignment, copy constructor, destructor) are fine

	static Point FromLong(long lpoint);
};

/**
 * A geometric rectangle class.
 * PRectangle is exactly the same as the Win32 RECT so can be used interchangeably.
 * PRectangles contain their top and left sides, but not their right and bottom sides.
 */
class PRectangle {
public:
	int left;
	int top;
	int right;
	int bottom;

	PRectangle(int left_=0, int top_=0, int right_=0, int bottom_ = 0) :
		left(left_), top(top_), right(right_), bottom(bottom_) {
	}

	// Other automatically defined methods (assignment, copy constructor, destructor) are fine

	bool operator==(PRectangle &rc) {
		return (rc.left == left) && (rc.right == right) &&
			(rc.top == top) && (rc.bottom == bottom);
	}
	bool Contains(Point pt) {
		return (pt.x >= left) && (pt.x <= right) &&
			(pt.y >= top) && (pt.y <= bottom);
	}
	bool Contains(PRectangle rc) {
		return (rc.left >= left) && (rc.right <= right) &&
			(rc.top >= top) && (rc.bottom <= bottom);
	}
	bool Intersects(PRectangle other) {
		return (right >= other.left) && (left <= other.right) &&
			(bottom >= other.top) && (top <= other.bottom);
	}
	int Width() { return right - left; }
	int Height() { return bottom - top; }
};

#if PLAT_WX
wxRect wxRectFromPRectangle(PRectangle prc);
PRectangle PRectangleFromwxRect(wxRect rc);
#endif

/**
 * A colour class.
 */
class Colour {
	ColourID co;
public:
	Colour(long lcol=0);
	Colour(unsigned int red, unsigned int green, unsigned int blue);
	bool operator==(const Colour &other) const;
	long AsLong() const;
	unsigned int GetRed();
	unsigned int GetGreen();
	unsigned int GetBlue();

	friend class Surface;
	friend class Palette;
};

/**
 * Colour pairs hold a desired colour and the colour that the graphics engine
 * allocates to approximate the desired colour.
 * To make palette management more automatic, ColourPairs could register at
 * construction time with a palette management object.
 */
struct ColourPair {
	Colour desired;
	Colour allocated;

	ColourPair(Colour desired_=Colour(0,0,0)) {
		desired = desired_;
		allocated = desired;
	}
};

class Window;	// Forward declaration for Palette

/**
 * Colour palette management.
 */
class Palette {
	int used;
	enum {numEntries = 100};
	ColourPair entries[numEntries];
#if PLAT_GTK
	GdkColor *allocatedPalette;
	int allocatedLen;
#elif PLAT_WIN
	HPALETTE hpal;
#elif PLAT_WX
	// wxPalette* pal;  // **** Is this needed?
#endif
public:
	bool allowRealization;

	Palette();
	~Palette();

	void Release();

	/**
	 * This method either adds a colour to the list of wanted colours (want==true)
	 * or retrieves the allocated colour back to the ColourPair.
	 * This is one method to make it easier to keep the code for wanting and retrieving in sync.
	 */
	void WantFind(ColourPair &cp, bool want);

	void Allocate(Window &w);

	friend class Surface;
};

/**
 * Font management.
 */
class Font {
protected:
	FontID id;
#if PLAT_WX
	int ascent;
#endif
	// Private so Font objects can not be copied
	Font(const Font &) {}
	Font &operator=(const Font &) { id=0; return *this; }
public:
	Font();
	virtual ~Font();

	virtual void Create(const char *faceName, int characterSet, int size, bool bold, bool italic);
	virtual void Release();

	FontID GetID() { return id; }
	// Alias another font - caller guarantees not to Release
	void SetID(FontID id_) { id = id_; }
	friend class Surface;
};

/**
 * A surface abstracts a place to draw.
 */
class Surface {
private:
	bool unicodeMode;
#if PLAT_GTK
	GdkDrawable *drawable;
	GdkGC *gc;
	GdkPixmap *ppixmap;
	int x;
	int y;
	bool inited;
	bool createdGC;
#elif PLAT_WIN
	HDC hdc;
	bool hdcOwned;
	HPEN pen;
	HPEN penOld;
	HBRUSH brush;
	HBRUSH brushOld;
	HFONT font;
	HFONT fontOld;
	HBITMAP bitmap;
	HBITMAP bitmapOld;
	HPALETTE paletteOld;
#elif PLAT_WX
	wxDC* hdc;
	bool hdcOwned;
	wxBitmap* bitmap;
	int x;
	int y;
#endif

	// Private so Surface objects can not be copied
	Surface(const Surface &) {}
	Surface &operator=(const Surface &) { return *this; }
#if PLAT_WIN || PLAT_WX
	void BrushColor(Colour back);
	void SetFont(Font &font_);
#endif
public:
	Surface();
	~Surface();

	void Init();
	void Init(SurfaceID hdc_);
	void InitPixMap(int width, int height, Surface *surface_);

	void Release();
	bool Initialised();
	void PenColour(Colour fore);
	int LogPixelsY();
	int DeviceHeightFont(int points);
	void MoveTo(int x_, int y_);
	void LineTo(int x_, int y_);
	void Polygon(Point *pts, int npts, Colour fore, Colour back);
	void RectangleDraw(PRectangle rc, Colour fore, Colour back);
	void FillRectangle(PRectangle rc, Colour back);
	void FillRectangle(PRectangle rc, Surface &surfacePattern);
	void RoundedRectangle(PRectangle rc, Colour fore, Colour back);
	void Ellipse(PRectangle rc, Colour fore, Colour back);
	void Copy(PRectangle rc, Point from, Surface &surfaceSource);

	void DrawText(PRectangle rc, Font &font_, int ybase, const char *s, int len, Colour fore, Colour back);
	void DrawTextClipped(PRectangle rc, Font &font_, int ybase, const char *s, int len, Colour fore, Colour back);
	void MeasureWidths(Font &font_, const char *s, int len, int *positions);
	int WidthText(Font &font_, const char *s, int len);
	int WidthChar(Font &font_, char ch);
	int Ascent(Font &font_);
	int Descent(Font &font_);
	int InternalLeading(Font &font_);
	int ExternalLeading(Font &font_);
	int Height(Font &font_);
	int AverageCharWidth(Font &font_);

	int SetPalette(Palette *pal, bool inBackGround);
	void SetClip(PRectangle rc);
	void FlushCachedState();

	void SetUnicodeMode(bool unicodeMode_) {
		unicodeMode=unicodeMode_;
	}
};

/**
 * Class to hide the details of window manipulation.
 * Does not own the window which will normally have a longer life than this object.
 */
class Window {
	friend class ListBox;
protected:
	WindowID id;
public:
	Window() : id(0) {}
	Window(const Window &source) : id(source.id) {}
	virtual ~Window();
	Window &operator=(WindowID id_) {
		id = id_;
		return *this;
	}
	WindowID GetID() { return id; }
	bool Created() { return id != 0; }
	void Destroy();
	bool HasFocus();
	PRectangle GetPosition();
	void SetPosition(PRectangle rc);
	void SetPositionRelative(PRectangle rc, Window relativeTo);
	PRectangle GetClientPosition();
	void Show(bool show=true);
	void InvalidateAll();
	void InvalidateRectangle(PRectangle rc);
	virtual void SetFont(Font &font);
	enum Cursor { cursorText, cursorArrow, cursorUp, cursorWait, cursorHoriz, cursorVert, cursorReverseArrow };
	void SetCursor(Cursor curs);
	void SetTitle(const char *s);
#if PLAT_WIN
	LRESULT SendMessage(UINT msg, WPARAM wParam=0, LPARAM lParam=0);
	int GetDlgCtrlID();
	HINSTANCE GetInstance();
#endif
};

/**
 * Listbox management.
 */
class ListBox : public Window {
#if PLAT_GTK
	WindowID list;
	WindowID scroller;
	int current;
#endif
	int desiredVisibleRows;
	unsigned int maxItemCharacters;
	unsigned int aveCharWidth;
public:
	ListBox();
	virtual ~ListBox();
	void Create(Window &parent, int ctrlID);
	virtual void SetFont(Font &font);
	void SetAverageCharWidth(int width);
	void SetVisibleRows(int rows);
	PRectangle GetDesiredRect();
	void Clear();
	void Append(char *s);
	int Length();
	void Select(int n);
	int GetSelection();
	int Find(const char *prefix);
	void GetValue(int n, char *value, int len);
	void Sort();
};

/**
 * Menu management.
 */
class Menu {
	MenuID id;
public:
	Menu();
	MenuID GetID() { return id; }
	void CreatePopUp();
	void Destroy();
	void Show(Point pt, Window &w);
};

/**
 * Platform class used to retrieve system wide parameters such as double click speed
 * and chrome colour. Not a creatable object, more of a module with several functions.
 */
class Platform {
	// Private so Platform objects can not be copied
	Platform(const Platform &) {}
	Platform &operator=(const Platform &) { return *this; }
public:
	// Should be private because no new Platforms are ever created
	// but gcc warns about this
	Platform() {}
	~Platform() {}
	static Colour Chrome();
	static Colour ChromeHighlight();
	static const char *DefaultFont();
	static int DefaultFontSize();
	static unsigned int DoubleClickTime();
	static void DebugDisplay(const char *s);
	static bool IsKeyDown(int key);
	static long SendScintilla(
		WindowID w, unsigned int msg, unsigned long wParam=0, long lParam=0);

	// These are utility functions not really tied to a platform
	static int Minimum(int a, int b);
	static int Maximum(int a, int b);
	// Next three assume 16 bit shorts and 32 bit longs
	static long LongFromTwoShorts(short a,short b) {
		return (a) | ((b) << 16);
	}
	static short HighShortFromLong(long x) {
		return static_cast<short>(x >> 16);
	}
	static short LowShortFromLong(long x) {
		return static_cast<short>(x & 0xffff);
	}
	static void DebugPrintf(const char *format, ...);
	static bool ShowAssertionPopUps(bool assertionPopUps_);
	static void Assert(const char *c, const char *file, int line);
	static int Clamp(int val, int minVal, int maxVal);
};

#ifdef  NDEBUG
#define PLATFORM_ASSERT(c) ((void)0)
#else
#define PLATFORM_ASSERT(c) ((c) ? (void)(0) : Platform::Assert(#c, __FILE__, __LINE__))
#endif

#endif
Commit	Line	Data
9ce192d4	1	// Scintilla source code edit control
65ec6247 RD	2	/** @file Platform.h
	3	** Interface to platform facilities. Also includes some basic utilities.
	4	** Implemented in PlatGTK.cxx for GTK+/Linux, PlatWin.cxx for Windows, and PlatWX.cxx for wxWindows.
	5	**/
	6	// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
9ce192d4 RD	7	// The License.txt file describes the conditions under which this software may be distributed.
	8
	9	#ifndef PLATFORM_H
	10	#define PLATFORM_H
	11
65ec6247 RD	12	// PLAT_GTK = GTK+ on Linux or Win32
	13	// PLAT_GTK_WIN32 is defined additionally when running PLAT_GTK under Win32
	14	// PLAT_WIN = Win32 API on Win32 OS
9ce192d4	15	// PLAT_WX is wxWindows on any supported platform
9ce192d4 RD	16
9ce192d4 RD	17	#define PLAT_GTK 0
65ec6247	18	#define PLAT_GTK_WIN32 0
9ce192d4 RD	19	#define PLAT_WIN 0
	20	#define PLAT_WX 0
	21
	22	#if defined(__WX__)
	23	#undef PLAT_WX
	24	#define PLAT_WX 1
	25
	26	#elif defined(GTK)
	27	#undef PLAT_GTK
	28	#define PLAT_GTK 1
	29
65ec6247 RD	30	#ifdef _MSC_VER
	31	#undef PLAT_GTK_WIN32
	32	#define PLAT_GTK_WIN32 1
	33	#endif
	34
9ce192d4 RD	35	#else
	36	#undef PLAT_WIN
	37	#define PLAT_WIN 1
	38
	39	#endif
	40
	41
	42	// Include the main header for each platform
	43
	44	#if PLAT_GTK
65ec6247 RD	45	#ifdef _MSC_VER
	46	#pragma warning(disable: 4505 4514 4710 4800)
	47	#endif
9ce192d4 RD	48	#include <gtk/gtk.h>
	49	#include <gdk/gdkkeysyms.h>
	50	#endif
	51
	52	#if PLAT_WIN
	53	#define _WIN32_WINNT 0x0400 // Otherwise some required stuff gets ifdef'd out
	54	// Vassili Bourdo: shut up annoying Visual C++ warnings:
	55	#ifdef _MSC_VER
65ec6247	56	#pragma warning(disable: 4244 4309 4710 4800)
9ce192d4 RD	57	#endif
9ce192d4 RD	58	#include <windows.h>
f6bcfd97	59	#include <commctrl.h>
9ce192d4 RD	60	#include <richedit.h>
	61	#endif
	62
	63	#if PLAT_WX
	64	#include <wx/wx.h>
	65	#endif
	66
	67	// Underlying the implementation of the platform classes are platform specific types.
	68	// Sometimes these need to be passed around by client code so they are defined here
	69
	70	#if PLAT_GTK
	71	typedef GdkColor ColourID;
	72	typedef GdkFont* FontID;
	73	typedef GdkDrawable* SurfaceID;
	74	typedef GtkWidget* WindowID;
	75	typedef GtkItemFactory* MenuID;
	76	#endif
	77
	78	#if PLAT_WIN
	79	typedef COLORREF ColourID;
	80	typedef HFONT FontID;
	81	typedef HDC SurfaceID;
	82	typedef HWND WindowID;
	83	typedef HMENU MenuID;
	84	#endif
	85
	86	#if PLAT_WX
	87	typedef wxColour ColourID;
	88	typedef wxFont* FontID;
	89	typedef wxDC* SurfaceID;
	90	typedef wxWindow* WindowID;
	91	typedef wxMenu* MenuID;
	92	#endif
	93
65ec6247 RD	94	/**
	95	* A geometric point class.
	96	* Point is exactly the same as the Win32 POINT and GTK+ GdkPoint so can be used interchangeably.
	97	*/
9ce192d4 RD	98	class Point {
	99	public:
	100	int x;
	101	int y;
65ec6247	102
9ce192d4 RD	103	Point(int x_=0, int y_=0) : x(x_), y(y_) {
	104	}
	105
	106	// Other automatically defined methods (assignment, copy constructor, destructor) are fine
65ec6247	107
9ce192d4 RD	108	static Point FromLong(long lpoint);
	109	};
	110
65ec6247 RD	111	/**
	112	* A geometric rectangle class.
	113	* PRectangle is exactly the same as the Win32 RECT so can be used interchangeably.
	114	* PRectangles contain their top and left sides, but not their right and bottom sides.
	115	*/
9ce192d4 RD	116	class PRectangle {
	117	public:
	118	int left;
	119	int top;
	120	int right;
	121	int bottom;
	122
	123	PRectangle(int left_=0, int top_=0, int right_=0, int bottom_ = 0) :
	124	left(left_), top(top_), right(right_), bottom(bottom_) {
	125	}
	126
	127	// Other automatically defined methods (assignment, copy constructor, destructor) are fine
	128
65ec6247 RD	129	bool operator==(PRectangle &rc) {
	130	return (rc.left == left) && (rc.right == right) &&
	131	(rc.top == top) && (rc.bottom == bottom);
	132	}
9ce192d4 RD	133	bool Contains(Point pt) {
	134	return (pt.x >= left) && (pt.x <= right) &&
	135	(pt.y >= top) && (pt.y <= bottom);
	136	}
	137	bool Contains(PRectangle rc) {
	138	return (rc.left >= left) && (rc.right <= right) &&
	139	(rc.top >= top) && (rc.bottom <= bottom);
	140	}
	141	bool Intersects(PRectangle other) {
	142	return (right >= other.left) && (left <= other.right) &&
	143	(bottom >= other.top) && (top <= other.bottom);
	144	}
	145	int Width() { return right - left; }
	146	int Height() { return bottom - top; }
	147	};
	148
	149	#if PLAT_WX
	150	wxRect wxRectFromPRectangle(PRectangle prc);
	151	PRectangle PRectangleFromwxRect(wxRect rc);
	152	#endif
	153
65ec6247 RD	154	/**
	155	* A colour class.
	156	*/
9ce192d4 RD	157	class Colour {
	158	ColourID co;
	159	public:
	160	Colour(long lcol=0);
	161	Colour(unsigned int red, unsigned int green, unsigned int blue);
	162	bool operator==(const Colour &other) const;
	163	long AsLong() const;
	164	unsigned int GetRed();
	165	unsigned int GetGreen();
	166	unsigned int GetBlue();
65ec6247	167
9ce192d4 RD	168	friend class Surface;
	169	friend class Palette;
	170	};
	171
65ec6247 RD	172	/**
	173	* Colour pairs hold a desired colour and the colour that the graphics engine
	174	* allocates to approximate the desired colour.
	175	* To make palette management more automatic, ColourPairs could register at
	176	* construction time with a palette management object.
	177	*/
9ce192d4 RD	178	struct ColourPair {
	179	Colour desired;
	180	Colour allocated;
	181
	182	ColourPair(Colour desired_=Colour(0,0,0)) {
	183	desired = desired_;
	184	allocated = desired;
	185	}
	186	};
	187
	188	class Window; // Forward declaration for Palette
	189
65ec6247 RD	190	/**
	191	* Colour palette management.
	192	*/
9ce192d4 RD	193	class Palette {
	194	int used;
	195	enum {numEntries = 100};
	196	ColourPair entries[numEntries];
	197	#if PLAT_GTK
	198	GdkColor *allocatedPalette;
	199	int allocatedLen;
	200	#elif PLAT_WIN
	201	HPALETTE hpal;
	202	#elif PLAT_WX
	203	// wxPalette* pal; // **** Is this needed?
	204	#endif
	205	public:
	206	bool allowRealization;
65ec6247	207
9ce192d4 RD	208	Palette();
	209	~Palette();
	210
	211	void Release();
65ec6247 RD	212
	213	/**
	214	* This method either adds a colour to the list of wanted colours (want==true)
	215	* or retrieves the allocated colour back to the ColourPair.
	216	* This is one method to make it easier to keep the code for wanting and retrieving in sync.
	217	*/
9ce192d4 RD	218	void WantFind(ColourPair &cp, bool want);
	219
	220	void Allocate(Window &w);
65ec6247	221
9ce192d4 RD	222	friend class Surface;
	223	};
	224
65ec6247 RD	225	/**
	226	* Font management.
	227	*/
9ce192d4	228	class Font {
d134f170	229	protected:
9ce192d4 RD	230	FontID id;
	231	#if PLAT_WX
	232	int ascent;
	233	#endif
	234	// Private so Font objects can not be copied
	235	Font(const Font &) {}
	236	Font &operator=(const Font &) { id=0; return *this; }
	237	public:
	238	Font();
d134f170	239	virtual ~Font();
9ce192d4	240
d134f170 RD	241	virtual void Create(const char *faceName, int characterSet, int size, bool bold, bool italic);
d134f170 RD	242	virtual void Release();
9ce192d4 RD	243
9ce192d4 RD	244	FontID GetID() { return id; }
f6bcfd97 BP	245	// Alias another font - caller guarantees not to Release
f6bcfd97 BP	246	void SetID(FontID id_) { id = id_; }
9ce192d4 RD	247	friend class Surface;
	248	};
	249
65ec6247 RD	250	/**
	251	* A surface abstracts a place to draw.
	252	*/
9ce192d4 RD	253	class Surface {
9ce192d4 RD	254	private:
f6bcfd97	255	bool unicodeMode;
9ce192d4 RD	256	#if PLAT_GTK
	257	GdkDrawable *drawable;
	258	GdkGC *gc;
	259	GdkPixmap *ppixmap;
	260	int x;
	261	int y;
	262	bool inited;
	263	bool createdGC;
	264	#elif PLAT_WIN
	265	HDC hdc;
	266	bool hdcOwned;
	267	HPEN pen;
	268	HPEN penOld;
	269	HBRUSH brush;
	270	HBRUSH brushOld;
	271	HFONT font;
	272	HFONT fontOld;
	273	HBITMAP bitmap;
	274	HBITMAP bitmapOld;
	275	HPALETTE paletteOld;
	276	#elif PLAT_WX
	277	wxDC* hdc;
	278	bool hdcOwned;
	279	wxBitmap* bitmap;
	280	int x;
	281	int y;
	282	#endif
	283
	284	// Private so Surface objects can not be copied
	285	Surface(const Surface &) {}
	286	Surface &operator=(const Surface &) { return *this; }
	287	#if PLAT_WIN \|\| PLAT_WX
	288	void BrushColor(Colour back);
	289	void SetFont(Font &font_);
	290	#endif
	291	public:
	292	Surface();
	293	~Surface();
65ec6247	294
9ce192d4 RD	295	void Init();
	296	void Init(SurfaceID hdc_);
	297	void InitPixMap(int width, int height, Surface *surface_);
	298
	299	void Release();
	300	bool Initialised();
	301	void PenColour(Colour fore);
	302	int LogPixelsY();
f6bcfd97	303	int DeviceHeightFont(int points);
9ce192d4 RD	304	void MoveTo(int x_, int y_);
	305	void LineTo(int x_, int y_);
	306	void Polygon(Point *pts, int npts, Colour fore, Colour back);
	307	void RectangleDraw(PRectangle rc, Colour fore, Colour back);
	308	void FillRectangle(PRectangle rc, Colour back);
	309	void FillRectangle(PRectangle rc, Surface &surfacePattern);
	310	void RoundedRectangle(PRectangle rc, Colour fore, Colour back);
	311	void Ellipse(PRectangle rc, Colour fore, Colour back);
	312	void Copy(PRectangle rc, Point from, Surface &surfaceSource);
	313
	314	void DrawText(PRectangle rc, Font &font_, int ybase, const char *s, int len, Colour fore, Colour back);
	315	void DrawTextClipped(PRectangle rc, Font &font_, int ybase, const char *s, int len, Colour fore, Colour back);
	316	void MeasureWidths(Font &font_, const char s, int len, int positions);
	317	int WidthText(Font &font_, const char *s, int len);
	318	int WidthChar(Font &font_, char ch);
	319	int Ascent(Font &font_);
	320	int Descent(Font &font_);
	321	int InternalLeading(Font &font_);
	322	int ExternalLeading(Font &font_);
	323	int Height(Font &font_);
	324	int AverageCharWidth(Font &font_);
65ec6247	325
9ce192d4 RD	326	int SetPalette(Palette *pal, bool inBackGround);
9ce192d4 RD	327	void SetClip(PRectangle rc);
f6bcfd97 BP	328	void FlushCachedState();
	329
	330	void SetUnicodeMode(bool unicodeMode_) {
	331	unicodeMode=unicodeMode_;
	332	}
9ce192d4 RD	333	};
9ce192d4 RD	334
65ec6247 RD	335	/**
	336	* Class to hide the details of window manipulation.
	337	* Does not own the window which will normally have a longer life than this object.
	338	*/
9ce192d4 RD	339	class Window {
	340	friend class ListBox;
	341	protected:
	342	WindowID id;
	343	public:
	344	Window() : id(0) {}
f6bcfd97	345	Window(const Window &source) : id(source.id) {}
9ce192d4 RD	346	virtual ~Window();
	347	Window &operator=(WindowID id_) {
	348	id = id_;
	349	return *this;
	350	}
	351	WindowID GetID() { return id; }
	352	bool Created() { return id != 0; }
	353	void Destroy();
	354	bool HasFocus();
	355	PRectangle GetPosition();
	356	void SetPosition(PRectangle rc);
	357	void SetPositionRelative(PRectangle rc, Window relativeTo);
	358	PRectangle GetClientPosition();
	359	void Show(bool show=true);
	360	void InvalidateAll();
	361	void InvalidateRectangle(PRectangle rc);
d134f170	362	virtual void SetFont(Font &font);
9ce192d4 RD	363	enum Cursor { cursorText, cursorArrow, cursorUp, cursorWait, cursorHoriz, cursorVert, cursorReverseArrow };
	364	void SetCursor(Cursor curs);
	365	void SetTitle(const char *s);
	366	#if PLAT_WIN
	367	LRESULT SendMessage(UINT msg, WPARAM wParam=0, LPARAM lParam=0);
	368	int GetDlgCtrlID();
	369	HINSTANCE GetInstance();
	370	#endif
	371	};
	372
65ec6247 RD	373	/**
	374	* Listbox management.
	375	*/
9ce192d4 RD	376	class ListBox : public Window {
	377	#if PLAT_GTK
	378	WindowID list;
	379	WindowID scroller;
	380	int current;
	381	#endif
d134f170 RD	382	int desiredVisibleRows;
	383	unsigned int maxItemCharacters;
	384	unsigned int aveCharWidth;
9ce192d4 RD	385	public:
	386	ListBox();
	387	virtual ~ListBox();
9ce192d4	388	void Create(Window &parent, int ctrlID);
d134f170 RD	389	virtual void SetFont(Font &font);
	390	void SetAverageCharWidth(int width);
	391	void SetVisibleRows(int rows);
	392	PRectangle GetDesiredRect();
9ce192d4 RD	393	void Clear();
	394	void Append(char *s);
	395	int Length();
	396	void Select(int n);
	397	int GetSelection();
	398	int Find(const char *prefix);
	399	void GetValue(int n, char *value, int len);
	400	void Sort();
	401	};
	402
65ec6247 RD	403	/**
	404	* Menu management.
	405	*/
9ce192d4 RD	406	class Menu {
	407	MenuID id;
	408	public:
	409	Menu();
	410	MenuID GetID() { return id; }
	411	void CreatePopUp();
	412	void Destroy();
	413	void Show(Point pt, Window &w);
	414	};
	415
65ec6247 RD	416	/**
	417	* Platform class used to retrieve system wide parameters such as double click speed
	418	* and chrome colour. Not a creatable object, more of a module with several functions.
	419	*/
9ce192d4 RD	420	class Platform {
	421	// Private so Platform objects can not be copied
	422	Platform(const Platform &) {}
	423	Platform &operator=(const Platform &) { return *this; }
	424	public:
	425	// Should be private because no new Platforms are ever created
	426	// but gcc warns about this
	427	Platform() {}
	428	~Platform() {}
	429	static Colour Chrome();
	430	static Colour ChromeHighlight();
	431	static const char *DefaultFont();
	432	static int DefaultFontSize();
	433	static unsigned int DoubleClickTime();
	434	static void DebugDisplay(const char *s);
	435	static bool IsKeyDown(int key);
	436	static long SendScintilla(
	437	WindowID w, unsigned int msg, unsigned long wParam=0, long lParam=0);
65ec6247	438
9ce192d4 RD	439	// These are utility functions not really tied to a platform
	440	static int Minimum(int a, int b);
	441	static int Maximum(int a, int b);
d134f170 RD	442	// Next three assume 16 bit shorts and 32 bit longs
	443	static long LongFromTwoShorts(short a,short b) {
	444	return (a) \| ((b) << 16);
	445	}
	446	static short HighShortFromLong(long x) {
	447	return static_cast<short>(x >> 16);
	448	}
	449	static short LowShortFromLong(long x) {
	450	return static_cast<short>(x & 0xffff);
	451	}
9ce192d4	452	static void DebugPrintf(const char *format, ...);
65ec6247 RD	453	static bool ShowAssertionPopUps(bool assertionPopUps_);
65ec6247 RD	454	static void Assert(const char c, const char file, int line);
9ce192d4 RD	455	static int Clamp(int val, int minVal, int maxVal);
	456	};
	457
65ec6247 RD	458	#ifdef NDEBUG
	459	#define PLATFORM_ASSERT(c) ((void)0)
	460	#else
	461	#define PLATFORM_ASSERT(c) ((c) ? (void)(0) : Platform::Assert(#c, __FILE__, __LINE__))
	462	#endif
	463
9ce192d4	464	#endif