/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2000-2009 Darklegion Development
 
This file is part of Tremulous.
 
Tremulous is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
 
Tremulous is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with Tremulous; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#ifndef __UI_SHARED_H
#define __UI_SHARED_H


#include "../qcommon/q_shared.h"
#include "../renderer/tr_types.h"
#include "../client/keycodes.h"

#include "../../assets/ui/menudef.h"

#define MAX_MENUNAME 32
#define MAX_ITEMTEXT 64
#define MAX_ITEMACTION 64
#define MAX_MENUDEFFILE 4096
#define MAX_MENUFILE 32768
#define MAX_MENUS 256
#define MAX_MENUITEMS 128
#define MAX_COLOR_RANGES 10
#define MAX_OPEN_MENUS 16

#define WINDOW_MOUSEOVER      0x00000001  // mouse is over it, non exclusive
#define WINDOW_HASFOCUS       0x00000002  // has cursor focus, exclusive
#define WINDOW_VISIBLE        0x00000004  // is visible
#define WINDOW_GREY           0x00000008  // is visible but grey ( non-active )
#define WINDOW_DECORATION     0x00000010  // for decoration only, no mouse, keyboard, etc..
#define WINDOW_FADINGOUT      0x00000020  // fading out, non-active
#define WINDOW_FADINGIN       0x00000040  // fading in
#define WINDOW_MOUSEOVERTEXT  0x00000080  // mouse is over it, non exclusive
#define WINDOW_INTRANSITION   0x00000100  // window is in transition
#define WINDOW_FORECOLORSET   0x00000200  // forecolor was explicitly set ( used to color alpha images or not )
#define WINDOW_HORIZONTAL     0x00000400  // for list boxes and sliders, vertical is default this is set of horizontal
#define WINDOW_LB_UPARROW     0x00000800  // mouse is over up arrow
#define WINDOW_LB_DOWNARROW   0x00001000  // mouse is over down arrow
#define WINDOW_LB_THUMB       0x00002000  // mouse is over thumb
#define WINDOW_LB_PGUP        0x00004000  // mouse is over page up
#define WINDOW_LB_PGDN        0x00008000  // mouse is over page down
#define WINDOW_ORBITING       0x00010000  // item is in orbit
#define WINDOW_OOB_CLICK      0x00020000  // close on out of bounds click
#define WINDOW_WRAPPED        0x00080000  // wrap text
#define WINDOW_FORCED         0x00100000  // forced open
#define WINDOW_POPUP          0x00200000  // popup
#define WINDOW_BACKCOLORSET   0x00400000  // backcolor was explicitly set
#define WINDOW_TIMEDVISIBLE   0x00800000  // visibility timing ( NOT implemented )


// CGAME cursor type bits
#define CURSOR_NONE           0x00000001
#define CURSOR_ARROW          0x00000002
#define CURSOR_SIZER          0x00000004

#ifdef CGAME
#define STRING_POOL_SIZE 128*1024
#else
#define STRING_POOL_SIZE 384*1024
#endif
#define MAX_STRING_HANDLES 4096

#define MAX_SCRIPT_ARGS 12
#define MAX_EDITFIELD 256
#define ITEM_VALUE_OFFSET 8

#define ART_FX_BASE       "menu/art/fx_base"
#define ART_FX_BLUE       "menu/art/fx_blue"
#define ART_FX_CYAN       "menu/art/fx_cyan"
#define ART_FX_GREEN      "menu/art/fx_grn"
#define ART_FX_RED        "menu/art/fx_red"
#define ART_FX_TEAL       "menu/art/fx_teal"
#define ART_FX_WHITE      "menu/art/fx_white"
#define ART_FX_YELLOW     "menu/art/fx_yel"

#define ASSET_GRADIENTBAR           "ui/assets/gradientbar2.tga"
#define ASSET_SCROLLBAR             "ui/assets/scrollbar.tga"
#define ASSET_SCROLLBAR_ARROWDOWN   "ui/assets/scrollbar_arrow_dwn_a.tga"
#define ASSET_SCROLLBAR_ARROWUP     "ui/assets/scrollbar_arrow_up_a.tga"
#define ASSET_SCROLLBAR_ARROWLEFT   "ui/assets/scrollbar_arrow_left.tga"
#define ASSET_SCROLLBAR_ARROWRIGHT  "ui/assets/scrollbar_arrow_right.tga"
#define ASSET_SCROLL_THUMB          "ui/assets/scrollbar_thumb.tga"
#define ASSET_SLIDER_BAR            "ui/assets/slider2.tga"
#define ASSET_SLIDER_THUMB          "ui/assets/sliderbutt_1.tga"

#define SCROLLBAR_ARROW_SIZE 16.0f
#define SCROLLBAR_ARROW_WIDTH (SCROLLBAR_ARROW_SIZE*DC->aspectScale)
#define SCROLLBAR_ARROW_HEIGHT SCROLLBAR_ARROW_SIZE
#define SCROLLBAR_SLIDER_X(_item)       (_item->window.rect.x+_item->window.rect.w- \
                                         SCROLLBAR_ARROW_WIDTH-DC->aspectScale)
#define SCROLLBAR_SLIDER_Y(_item)       (SCROLLBAR_Y(_item)+SCROLLBAR_ARROW_HEIGHT)
#define SCROLLBAR_SLIDER_HEIGHT(_item)  (_item->window.rect.h-(SCROLLBAR_ARROW_HEIGHT*2.0f)-2.0f)
#define SCROLLBAR_X(_item)              (_item->window.rect.x+DC->aspectScale)
#define SCROLLBAR_Y(_item)              (_item->window.rect.y+1.0f)
#define SCROLLBAR_W(_item)              (SCROLLBAR_SLIDER_X(_item)-SCROLLBAR_X(_item))
#define SCROLLBAR_H(_item)              (_item->window.rect.h-2.0f)

#define SLIDER_WIDTH (96.0f*DC->aspectScale)
#define SLIDER_HEIGHT 16.0f
#define SLIDER_THUMB_WIDTH (12.0f*DC->aspectScale)
#define SLIDER_THUMB_HEIGHT 20.0f
#define NUM_CROSSHAIRS      10

typedef struct
{
  const char *command;
  const char *args[MAX_SCRIPT_ARGS];
}
scriptDef_t;


typedef struct
{
  float x;    // horiz position
  float y;    // vert position
  float w;    // width
  float h;    // height;
}
rectDef_t;

typedef rectDef_t Rectangle;

// FIXME: do something to separate text vs window stuff

typedef struct
{
  Rectangle rect;                 // client coord rectangle
  int aspectBias;                 // direction in which to aspect compensate
  Rectangle rectClient;           // screen coord rectangle
  const char *name;               //
  const char *group;              // if it belongs to a group
  const char *cinematicName;      // cinematic name
  int cinematic;                  // cinematic handle
  int style;                      //
  int border;                     //
  int ownerDraw;                  // ownerDraw style
  int ownerDrawFlags;             // show flags for ownerdraw items
  float borderSize;               //
  int flags;                      // visible, focus, mouseover, cursor
  Rectangle rectEffects;          // for various effects
  Rectangle rectEffects2;         // for various effects
  int offsetTime;                 // time based value for various effects
  int nextTime;                   // time next effect should cycle
  vec4_t foreColor;               // text color
  vec4_t backColor;               // border color
  vec4_t borderColor;             // border color
  vec4_t outlineColor;            // border color
  qhandle_t background;           // background asset
}
windowDef_t;

typedef windowDef_t Window;

typedef struct
{
  vec4_t  color;
  float    low;
  float    high;
}
colorRangeDef_t;

// FIXME: combine flags into bitfields to save space
// FIXME: consolidate all of the common stuff in one structure for menus and items
// THINKABOUTME: is there any compelling reason not to have items contain items
// and do away with a menu per say.. major issue is not being able to dynamically allocate
// and destroy stuff.. Another point to consider is adding an alloc free call for vm's and have
// the engine just allocate the pool for it based on a cvar
// many of the vars are re-used for different item types, as such they are not always named appropriately
// the benefits of c++ in DOOM will greatly help crap like this
// FIXME: need to put a type ptr that points to specific type info per type
//
#define MAX_LB_COLUMNS 16

typedef struct columnInfo_s
{
  int pos;
  int width;
  int align;
}
columnInfo_t;

typedef struct listBoxDef_s
{
  int startPos;
  int endPos;
  int cursorPos;

  float elementWidth;
  float elementHeight;
  int elementStyle;
  int dropItems;

  int numColumns;
  columnInfo_t columnInfo[MAX_LB_COLUMNS];

  const char *doubleClick;

  qboolean notselectable;
  qboolean noscrollbar;

  qboolean resetonfeederchange;
  int lastFeederCount;
}
listBoxDef_t;

typedef struct cycleDef_s
{
  int cursorPos;
}
cycleDef_t;

typedef struct editFieldDef_s
{
  float minVal;                  //  edit field limits
  float maxVal;                  //
  float defVal;                  //
  float range;                   //
  int maxChars;                  // for edit fields
  int maxPaintChars;             // for edit fields
  int maxFieldWidth;             // for edit fields
  int paintOffset;               //
}
editFieldDef_t;

#define MAX_MULTI_CVARS 32

typedef struct multiDef_s
{
  const char *cvarList[MAX_MULTI_CVARS];
  const char *cvarStr[MAX_MULTI_CVARS];
  float cvarValue[MAX_MULTI_CVARS];
  int count;
  qboolean strDef;
}
multiDef_t;

typedef struct modelDef_s
{
  int angle;
  vec3_t origin;
  float fov_x;
  float fov_y;
  int rotationSpeed;
}
modelDef_t;

#define CVAR_ENABLE    0x00000001
#define CVAR_DISABLE  0x00000002
#define CVAR_SHOW      0x00000004
#define CVAR_HIDE      0x00000008

typedef enum
{
  TYPE_ANY = -1,
  TYPE_NONE,
  TYPE_LIST,
  TYPE_EDIT,
  TYPE_MULTI,
  TYPE_COMBO,
  TYPE_MODEL
} itemDataType_t;

typedef struct itemDef_s
{
  Window window;                 // common positional, border, style, layout info
  Rectangle textRect;            // rectangle the text ( if any ) consumes
  int type;                      // text, button, radiobutton, checkbox, textfield, listbox, combo
  int alignment;                 // left center right
  int textalignment;             // ( optional ) alignment for text within rect based on text width
  int textvalignment;            // ( optional ) alignment for text within rect based on text width
  float textalignx;              // ( optional ) text alignment x coord
  float textaligny;              // ( optional ) text alignment x coord
  float textscale;               // scale percentage from 72pts
  int textStyle;                 // ( optional ) style, normal and shadowed are it for now
  const char *text;              // display text
  void *parent;                  // menu owner
  qhandle_t asset;               // handle to asset
  const char *mouseEnterText;    // mouse enter script
  const char *mouseExitText;     // mouse exit script
  const char *mouseEnter;        // mouse enter script
  const char *mouseExit;         // mouse exit script
  const char *action;            // select script
  const char *onFocus;           // select script
  const char *leaveFocus;        // select script
  const char *onTextEntry;       // called when text entered
  const char *onCharEntry;       // called when text entered
  const char *cvar;              // associated cvar
  const char *cvarTest;          // associated cvar for enable actions
  const char *enableCvar;         // enable, disable, show, or hide based on value, this can contain a list
  int cvarFlags;                 //  what type of action to take on cvarenables
  sfxHandle_t focusSound;
  int numColors;                 // number of color ranges
  colorRangeDef_t colorRanges[MAX_COLOR_RANGES];
  int feederID;                  // where to get data for this item
  int cursorPos;                 // cursor position in characters
  union
  {
    void           *data;
    listBoxDef_t   *list;
    editFieldDef_t *edit;
    multiDef_t     *multi;
    cycleDef_t     *cycle;
    modelDef_t     *model;
  } typeData;                    // type specific data pointers
}
itemDef_t;

typedef struct
{
  Window window;
  const char  *font;                // font
  qboolean fullScreen;              // covers entire screen
  int itemCount;                    // number of items;
  int fontIndex;                    //
  int cursorItem;                    // which item as the cursor
  int fadeCycle;                    //
  float fadeClamp;                  //
  float fadeAmount;                  //
  const char *onOpen;                // run when the menu is first opened
  const char *onClose;              // run when the menu is closed
  const char *onESC;                // run when the menu is closed
  const char *soundName;            // background loop sound for menu

  vec4_t focusColor;                // focus color for items
  vec4_t disableColor;              // focus color for items
  itemDef_t *items[MAX_MENUITEMS];  // items this menu contains
}
menuDef_t;

typedef struct
{
  const char *fontStr;
  const char *cursorStr;
  const char *gradientStr;
  fontInfo_t textFont;
  fontInfo_t smallFont;
  fontInfo_t bigFont;
  qhandle_t cursor;
  qhandle_t gradientBar;
  qhandle_t scrollBarArrowUp;
  qhandle_t scrollBarArrowDown;
  qhandle_t scrollBarArrowLeft;
  qhandle_t scrollBarArrowRight;
  qhandle_t scrollBar;
  qhandle_t scrollBarThumb;
  qhandle_t buttonMiddle;
  qhandle_t buttonInside;
  qhandle_t solidBox;
  qhandle_t sliderBar;
  qhandle_t sliderThumb;
  sfxHandle_t menuEnterSound;
  sfxHandle_t menuExitSound;
  sfxHandle_t menuBuzzSound;
  sfxHandle_t itemFocusSound;
  float fadeClamp;
  int fadeCycle;
  float fadeAmount;
  float shadowX;
  float shadowY;
  vec4_t shadowColor;
  float shadowFadeClamp;
  qboolean fontRegistered;
  emoticon_t emoticons[ MAX_EMOTICONS ];
  int emoticonCount;
}
cachedAssets_t;

typedef struct
{
  const char *name;
  void ( *handler ) ( itemDef_t *item, char** args );
}
commandDef_t;

typedef struct
{
  qhandle_t ( *registerShaderNoMip ) ( const char *p );
  void ( *setColor ) ( const vec4_t v );
  void ( *drawHandlePic ) ( float x, float y, float w, float h, qhandle_t asset );
  void ( *drawStretchPic ) ( float x, float y, float w, float h, float s1, float t1, float s2, float t2, qhandle_t hShader );
  qhandle_t ( *registerModel ) ( const char *p );
  void ( *modelBounds ) ( qhandle_t model, vec3_t min, vec3_t max );
  void ( *fillRect ) ( float x, float y, float w, float h, const vec4_t color );
  void ( *drawRect ) ( float x, float y, float w, float h, float size, const vec4_t color );
  void ( *drawSides ) ( float x, float y, float w, float h, float size );
  void ( *drawTopBottom ) ( float x, float y, float w, float h, float size );
  void ( *clearScene ) ( void );
  void ( *addRefEntityToScene ) ( const refEntity_t *re );
  void ( *renderScene ) ( const refdef_t *fd );
  void ( *registerFont ) ( const char *pFontname, int pointSize, fontInfo_t *font );
  void ( *ownerDrawItem ) ( float x, float y, float w, float h, float text_x,
                            float text_y, int ownerDraw, int ownerDrawFlags,
                            int align, int textalign, int textvalign,
                            float borderSize, float scale, vec4_t foreColor,
                            vec4_t backColor, qhandle_t shader, int textStyle );
  float ( *getValue ) ( int ownerDraw );
  qboolean ( *ownerDrawVisible ) ( int flags );
  void ( *runScript )( char **p );
  void ( *getCVarString )( const char *cvar, char *buffer, int bufsize );
  float ( *getCVarValue )( const char *cvar );
  void ( *setCVar )( const char *cvar, const char *value );
  void ( *drawTextWithCursor )( float x, float y, float scale, vec4_t color, const char *text, int cursorPos, char cursor, int limit, int style );
  void ( *setOverstrikeMode )( qboolean b );
  qboolean ( *getOverstrikeMode )( void );
  void ( *startLocalSound )( sfxHandle_t sfx, int channelNum );
  qboolean ( *ownerDrawHandleKey )( int ownerDraw, int key );
  int ( *feederCount )( int feederID );
  const char *( *feederItemText )( int feederID, int index, int column, qhandle_t *handle );
  qhandle_t ( *feederItemImage )( int feederID, int index );
  void ( *feederSelection )( int feederID, int index );
  int ( *feederInitialise )( int feederID );
  void ( *keynumToStringBuf )( int keynum, char *buf, int buflen );
  void ( *getBindingBuf )( int keynum, char *buf, int buflen );
  void ( *setBinding )( int keynum, const char *binding );
  void ( *executeText )( int exec_when, const char *text );
  void ( *Error )( int level, const char *error, ... );
  void ( *Print )( const char *msg, ... );
  void ( *Pause )( qboolean b );
  int ( *ownerDrawWidth )( int ownerDraw, float scale );
  const char *( *ownerDrawText )( int ownerDraw );
  sfxHandle_t ( *registerSound )( const char *name, qboolean compressed );
  void ( *startBackgroundTrack )( const char *intro, const char *loop );
  void ( *stopBackgroundTrack )( void );
  int ( *playCinematic )( const char *name, float x, float y, float w, float h );
  void ( *stopCinematic )( int handle );
  void ( *drawCinematic )( int handle, float x, float y, float w, float h );
  void ( *runCinematicFrame )( int handle );

  float      yscale;
  float      xscale;
  float      aspectScale;
  int        realTime;
  int        frameTime;
  float      cursorx;
  float      cursory;
  qboolean  debug;

  cachedAssets_t Assets;

  glconfig_t glconfig;
  qhandle_t  whiteShader;
  qhandle_t gradientImage;
  qhandle_t cursor;
  float FPS;

}
displayContextDef_t;

const char *String_Alloc( const char *p );
void String_Init( void );
void String_Report( void );
void Init_Display( displayContextDef_t *dc );
void Display_ExpandMacros( char * buff );
void Menu_Init( menuDef_t *menu );
void Item_Init( itemDef_t *item );
void Menu_PostParse( menuDef_t *menu );
menuDef_t *Menu_GetFocused( void );
void Menu_HandleKey( menuDef_t *menu, int key, qboolean down );
void Menu_HandleMouseMove( menuDef_t *menu, float x, float y );
void Menu_ScrollFeeder( menuDef_t *menu, int feeder, qboolean down );
qboolean Float_Parse( char **p, float *f );
qboolean Color_Parse( char **p, vec4_t *c );
qboolean Int_Parse( char **p, int *i );
qboolean Rect_Parse( char **p, rectDef_t *r );
qboolean String_Parse( char **p, const char **out );
qboolean Script_Parse( char **p, const char **out );
qboolean PC_Float_Parse( int handle, float *f );
qboolean PC_Color_Parse( int handle, vec4_t *c );
qboolean PC_Int_Parse( int handle, int *i );
qboolean PC_Rect_Parse( int handle, rectDef_t *r );
qboolean PC_String_Parse( int handle, const char **out );
qboolean PC_Script_Parse( int handle, const char **out );
int Menu_Count( void );
void Menu_New( int handle );
void Menu_UpdateAll( void );
void Menu_PaintAll( void );
menuDef_t *Menus_ActivateByName( const char *p );
menuDef_t *Menus_ReplaceActiveByName( const char *p );
void Menu_Reset( void );
qboolean Menus_AnyFullScreenVisible( void );
void  Menus_Activate( menuDef_t *menu );
qboolean  Menus_ReplaceActive( menuDef_t *menu );

displayContextDef_t *Display_GetContext( void );
void *Display_CaptureItem( int x, int y );
qboolean Display_MouseMove( void *p, float x, float y );
int Display_CursorType( int x, int y );
qboolean Display_KeyBindPending( void );
menuDef_t *Menus_FindByName( const char *p );
void Menus_CloseByName( const char *p );
void Display_HandleKey( int key, qboolean down, int x, int y );
void LerpColor( vec4_t a, vec4_t b, vec4_t c, float t );
void Menus_CloseAll( void );
void Menu_Update( menuDef_t *menu );
void Menu_Paint( menuDef_t *menu, qboolean forcePaint );
void Menu_SetFeederSelection( menuDef_t *menu, int feeder, int index, const char *name );
void Display_CacheAll( void );

typedef void ( CaptureFunc ) ( void *p );

void UI_InstallCaptureFunc( CaptureFunc *f, void *data, int timeout );
void UI_RemoveCaptureFunc( void );

void *UI_Alloc( int size );
void UI_InitMemory( void );
qboolean UI_OutOfMemory( void );

void Controls_GetConfig( void );
void Controls_SetConfig( qboolean restart );
void Controls_SetDefaults( void );

void trap_R_SetClipRegion( const float *region );

//for cg_draw.c
void Item_Text_Wrapped_Paint( itemDef_t *item );
const char *Item_Text_Wrap( const char *text, float scale, float width );
void UI_DrawTextBlock( rectDef_t *rect, float text_x, float text_y, vec4_t color,
                       float scale, int textalign, int textvalign,
                       int textStyle, const char *text );
void UI_Text_Paint( float x, float y, float scale, vec4_t color, const char *text, float adjust, int limit, int style );
void UI_Text_Paint_Limit( float *maxX, float x, float y, float scale,
                          vec4_t color, const char* text, float adjust, int limit );
float UI_Text_Width( const char *text, float scale, int limit );
float UI_Text_Height( const char *text, float scale, int limit );
float UI_Text_EmWidth( float scale );
float UI_Text_EmHeight( float scale );
qboolean UI_Text_IsEmoticon( const char *s, qboolean *escaped, int *length, qhandle_t *h, int *width );
void UI_EscapeEmoticons( char *dest, const char *src, int destsize );

int      trap_Parse_AddGlobalDefine( char *define );
int      trap_Parse_LoadSource( const char *filename );
int      trap_Parse_FreeSource( int handle );
int      trap_Parse_ReadToken( int handle, pc_token_t *pc_token );
int      trap_Parse_SourceFileAndLine( int handle, char *filename, int *line );

void    BindingFromName( const char *cvar );
extern char g_nameBind1[ 32 ];
extern char g_nameBind2[ 32 ];
#endif
