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/** GraphApp* --------* Common cross-platform graphics application routines.* Version 2.4 (c) Lachlan Patrick 1996-1998.* This header file is designed to be platform-independent.** Copyright 2006 The R Foundation**//** Common cross-platform graphics routines library.*/#ifndef _GRAPHAPP_H#define _GRAPHAPP_H 240/** Assume C declarations for C++*/#ifdef __cplusplusextern "C" {#endif /* begin normal C declarations *//** Definition of some constants.*/#include <stdio.h>#include <stdlib.h>#ifndef Pi#define Pi 3.14159265359#endif/** Types.*/typedef unsigned char GAbyte;#define byte GAbyte#ifndef objptrtypedef struct { int kind; } gui_obj;typedef gui_obj * objptr;#endiftypedef unsigned long rgb; /* red-green-blue colour value */typedef objptr font; /* font of certain size and style */typedef objptr cursor; /* mouse cursor shape */typedef objptr drawing; /* bitmap, window or control */typedef drawing bitmap; /* platform-specific bitmap */typedef drawing window; /* on-screen window */typedef drawing control; /* buttons, text-fields, scrollbars */typedef control label; /* text label */typedef control button; /* push button */typedef control checkbox; /* check-box */typedef control radiobutton; /* radio button */typedef control radiogroup; /* group of radio buttons */typedef control field; /* one-line text field */typedef control textbox; /* multi-line text box */typedef control scrollbar; /* scroll-bar */typedef control listbox; /* list of text */typedef control progressbar; /* progress bar */typedef control menubar; /* contains menus */typedef control menu; /* pull-down menu contains menuitems */typedef control menuitem; /* a single item in a pull-down menu *//** Structures.*/typedef struct point point;typedef struct rect rect;typedef struct drawstruct drawstruct;typedef struct drawstruct *drawstate;typedef struct imagedata imagedata;typedef struct imagedata *image;struct point{int x, y;};struct rect{int x, y; /* top-left point inside rect */int width, height; /* width and height of rect */};struct drawstruct{drawing dest;rgb hue;int mode;point p;int linewidth;font fnt;cursor crsr;};struct imagedata {int depth;int width;int height;int cmapsize;rgb * cmap;byte * pixels;};/** Call-backs.*/typedef void (*voidfn)(void);typedef void (*timerfn)(void *data);typedef void (*actionfn)(control c);typedef void (*drawfn)(control c, rect r);typedef void (*mousefn)(control c, int buttons, point xy);typedef void (*intfn)(control c, int argument);typedef void (*keyfn)(control c, int key);typedef void (*menufn)(menuitem m);typedef void (*scrollfn)(scrollbar s, int position);typedef void (*dropfn)(control c, char *data);/** Mouse buttons state (bit-fields).*/#define NoButton 0x0000#define LeftButton 0x0001#define MiddleButton 0x0002#define RightButton 0x0004/** ANSI character codes.*/#define BELL 0x07#define BKSP 0x08#define VTAB 0x0B#define FF 0x0C#define ESC 0x1B/** Edit-key codes.*/#define INS 0x2041#define DEL 0x2326#define HOME 0x21B8#define END 0x2198#define PGUP 0x21DE#define PGDN 0x21DF#define ENTER 0x2324/** Cursor-key codes.*/#define LEFT 0x2190#define UP 0x2191#define RIGHT 0x2192#define DOWN 0x2193/** Function-key codes.*/#define F1 0x276C#define F2 0x276D#define F3 0x276E#define F4 0x276F#define F5 0x2770#define F6 0x2771#define F7 0x2772#define F8 0x2773#define F9 0x2774#define F10 0x2775/** Redefined functions.*/#define REDEFINE_FUNC_NAMES#define addpt GA_addpt#define subpt GA_subpt#define equalpt GA_equalpt#define newmenu GA_newmenu#define newcontrol GA_newcontrol#define newwindow GA_newwindow#define gettext GA_gettext#define settext GA_settext/** General functions.*/int initapp(int argc, char *argv[]);void exitapp(void);void drawall(void);int peekevent(void);int doevent(void);void mainloop(void);int execapp(char *cmd);/*void beep(void);*//** Point and rectangle arithmetic.*/point newpoint(int x, int y);rect newrect(int left, int top, int width, int height);rect rpt(point min, point max);#define pt(x,y) newpoint((x),(y))#define rect(x,y,w,h) newrect((x),(y),(w),(h))point topleft(rect r);point bottomright(rect r);point topright(rect r);point bottomleft(rect r);point addpt(point p1, point p2);point subpt(point p1, point p2);point midpt(point p1, point p2);point mulpt(point p1, int i);point divpt(point p1, int i);rect rmove(rect r, point p);rect raddpt(rect r, point p);rect rsubpt(rect r, point p);rect rmul(rect r, int i);rect rdiv(rect r, int i);rect growr(rect r, int w, int h);rect insetr(rect r, int i);rect rcenter(rect r1, rect r2);int ptinr(point p, rect r);int rinr(rect r1, rect r2);int rxr(rect r1, rect r2);int equalpt(point p1, point p2);int equalr(rect r1, rect r2);rect clipr(rect r1, rect r2);rect rcanon(rect r);/** Colour functions and constants.*/#define rgb(r,g,b) ((((rgb)r)<<16)|(((rgb)g)<<8)|((rgb)b))#define getalpha(col) (((col)>>24)&0x00FFUL)#define getred(col) (((col)>>16)&0x00FFUL)#define getgreen(col) (((col)>>8)&0x00FFUL)#define getblue(col) ((col)&0x00FFUL)void setrgb(rgb c);#define setcolor(c) setrgb(c)#define setcolour(c) setrgb(c)/* changed to avoid clashes with w32api 2.0 */#define gaRed 0x00FF0000UL#define gaGreen 0x0000FF00UL#define gaBlue 0x000000FFUL#define Transparent 0xFFFFFFFFUL#define Black 0x00000000UL#define White 0x00FFFFFFUL#define Yellow 0x00FFFF00UL#define Magenta 0x00FF00FFUL#define Cyan 0x0000FFFFUL#define Grey 0x00808080UL#define Gray 0x00808080UL#define LightGrey 0x00C0C0C0UL#define LightGray 0x00C0C0C0UL#define DarkGrey 0x00404040UL#define DarkGray 0x00404040UL#define DarkBlue 0x00000080UL#define DarkGreen 0x00008000UL#define DarkRed 0x008B0000UL/* changed to match rgb */#define LightBlue 0x0080C0FFUL#define LightGreen 0x0080FF80UL#define LightRed 0x00FFC0FFUL#define Pink 0x00FFAFAFUL#define Brown 0x00603000UL#define Orange 0x00FF8000UL#define Purple 0x00C000FFUL#define Lime 0x0080FF00UL/** Context functions for bitmaps, windows, controls.*/void addto(control dest);void drawto(drawing dest);void setlinewidth(int width);/** Transfer modes for drawing operations, S=source, D=destination.* The modes are arranged so that, for example, (~D)|S == notDorS.*/void setdrawmode(int mode);#define Zeros 0x00#define DnorS 0x01#define DandnotS 0x02#define notS 0x03#define notDandS 0x04#define notD 0x05#define DxorS 0x06#define DnandS 0x07#define DandS 0x08#define DxnorS 0x09#define D 0x0A#define DornotS 0x0B#define S 0x0C#define notDorS 0x0D#define DorS 0x0E#define Ones 0x0F/** Drawing functions.*/void bitblt(drawing dest, drawing src, point dp, rect sr, int mode);void scrollrect(point dp, rect sr);void copyrect(drawing src, point dp, rect sr);void texturerect(drawing src, rect r);void invertrect(rect r);rgb getpixel(point p);void setpixel(point p, rgb c);/** Drawing using the current colour.*/void moveto(point p);void lineto(point p);void drawpoint(point p);void drawline(point p1, point p2);void drawrect(rect r);void fillrect(rect r);void drawarc(rect r, int start_angle, int end_angle);void fillarc(rect r, int start_angle, int end_angle);void drawellipse(rect r);void fillellipse(rect r);void drawroundrect(rect r);void fillroundrect(rect r);void drawpolygon(point *p, int n);void fillpolygon(point *p, int n);/** Drawing text, selecting fonts.*/font newfont(char *name, int style, int size);void setfont(font f);int fontwidth(font f);int fontheight(font f);int fontascent(font f);int fontdescent(font f);#define getascent(f) fontascent(f)#define getdescent(f) fontdescent(f)int strwidth(font f, char *s);point strsize(font f, char *s);rect strrect(font f, char *s);int drawstr(point p, char *str);int textheight(int width, char *text);char * drawtext(rect r, int alignment, char *text);int gprintf(char *fmt, ...);/** Text styles and alignments.*/#define Plain 0x0000#define Bold 0x0001#define Italic 0x0002#define BoldItalic 0x0003#define SansSerif 0x0004#define FixedWidth 0x0008#define Wide 0x0010#define Narrow 0x0020#define AlignTop 0x0000#define AlignBottom 0x0100#define VJustify 0x0200#define VCenter 0x0400#define VCentre 0x0400#define AlignLeft 0x0000#define AlignRight 0x1000#define Justify 0x2000#define Center 0x4000#define Centre 0x4000#define AlignCenter 0x4000#define AlignCentre 0x4000#define Underline 0x0800/** Find the current state of drawing.*/drawing currentdrawing(void);rgb currentrgb(void);#define currentcolor() currentrgb()#define currentcolour() currentrgb()int currentmode(void);point currentpoint(void);int currentlinewidth(void);font currentfont(void);cursor currentcursor(void);/** Find current keyboard state.*/int getkeystate(void);#define AltKey 0x0001#define CmdKey 0x0001#define CtrlKey 0x0002#define OptionKey 0x0002#define ShiftKey 0x0004/** Bitmaps.*/bitmap newbitmap(int width, int height, int depth);bitmap loadbitmap(char *name);bitmap imagetobitmap(image img);bitmap createbitmap(int width, int height, int depth, byte *data);void setbitmapdata(bitmap b, byte data[]);void getbitmapdata(bitmap b, byte data[]);void getbitmapdata2(bitmap b, byte **data);/** Images.*/image newimage(int width, int height, int depth);image copyimage(image img);void delimage(image img);void setpixels(image img, byte pixels[]);byte * getpixels(image img);void setpalette(image img, int length, rgb cmap[]);rgb * getpalette(image img);int getpalettesize(image img);image scaleimage(image src, rect dr, rect sr);image convert32to8(image img);image convert8to32(image img);void sortpalette(image img);image loadimage(char *filename);void saveimage(image img, char *filename);void drawimage(image img, rect dr, rect sr);void drawmonochrome(image img, rect dr, rect sr);void drawgreyscale(image img, rect dr, rect sr);#define drawgrayscale drawgreyscalevoid drawdarker(image img, rect dr, rect sr);void drawbrighter(image img, rect dr, rect sr);/** Windows.*/window newwindow(char *name, rect r, long flags);void show(window w);void hide(window w);rect GetCurrentWinPos(window obj);/** Window creation flags.*/#define SimpleWindow 0x00000000L#define Menubar 0x00000010L#define Titlebar 0x00000020L#define Closebox 0x00000040L#define Resize 0x00000080L#define Maximize 0x00000100L#define Minimize 0x00000200L#define HScrollbar 0x00000400L#define VScrollbar 0x00000800L#define Modal 0x00001000L#define Floating 0x00002000L#define Centered 0x00004000L#define Centred 0x00004000L#define Workspace 0x00010000L#define Document 0x00020000L#define ChildWindow 0x00040000L#define TrackMouse 0x00080000L#define UsePalette 0x00100000L#define StandardWindow (Titlebar|Closebox|Resize|Maximize|Minimize)/** Functions which work for bitmaps, windows and controls.*/int objdepth(objptr obj);rect objrect(objptr obj);int objwidth(objptr obj);int objheight(objptr obj);void delobj(objptr obj);#define getdepth(obj) objdepth((objptr)(obj))#define getrect(obj) objrect((objptr)(obj))#define getwidth(obj) objwidth((objptr)(obj))#define getheight(obj) objheight((objptr)(obj))#define del(obj) delobj((objptr)(obj))/** Setting window and control callback functions.*/void setaction(control c, actionfn fn);void sethit(control c, intfn fn);void setdel(control c, actionfn fn);void setclose(control c, actionfn fn);void setredraw(control c, drawfn fn);void setresize(control c, drawfn fn);void setkeydown(control c, keyfn fn);void setkeyaction(control c, keyfn fn);void setmousedown(control c, mousefn fn);void setmousedrag(control c, mousefn fn);void setmouseup(control c, mousefn fn);void setmousemove(control c, mousefn fn);void setmouserepeat(control c, mousefn fn);void setdrop(control c, dropfn fn);void setonfocus(control c, actionfn fn);/** Using windows and controls.*/void clear(control c);void draw(control c);void redraw(control c);void resize(control c, rect r);void show(control c);void hide(control c);int isvisible(control c);void enable(control c);void disable(control c);int isenabled(control c);void check(control c);void uncheck(control c);int ischecked(control c);void highlight(control c);void unhighlight(control c);int ishighlighted(control c);void flashcontrol(control c);void activatecontrol(control c);/** Changing the state of a control.*/void settext(control c, char *newtext);char * gettext(control c);#define setname(c,newname) settext(c,newname)#define getname(c) gettext(c)void settextfont(control c, font f);font gettextfont(control c);void setforeground(control c, rgb fg);rgb getforeground(control c);void setbackground(control c, rgb bg);rgb getbackground(control c);void setvalue(control c, int value);int getvalue(control c);void setdata(control c, void *data);void * getdata(control c);window parentwindow(control c);/** Control states.*/#define Visible 0x0001L#define Enabled 0x0002L#define Checked 0x0004L#define Highlighted 0x0008L#define Armed 0x0010L#define Focus 0x0020L/** Create buttons, scrollbars, controls etc on the current window.*/control newcontrol(char *text, rect r);drawing newdrawing(rect r, drawfn fn);drawing newpicture(image img, rect r);button newbutton(char *text, rect r, actionfn fn);button newimagebutton(image img, rect r, actionfn fn);void setimage(control c, image img);checkbox newcheckbox(char *text, rect r, actionfn fn);checkbox newimagecheckbox(image img, rect r, actionfn fn);radiobutton newradiobutton(char *text, rect r, actionfn fn);radiogroup newradiogroup(void);scrollbar newscrollbar(rect r, int max, int pagesize, scrollfn fn);void changescrollbar(scrollbar s, int where, int max, int size);label newlabel(char *text, rect r, int alignment);field newfield(char *text, rect r);field newpassword(char *text, rect r);textbox newtextbox(char *text, rect r);textbox newtextarea(char *text, rect r);textbox newrichtextarea(char *text, rect r);listbox newlistbox(char *list[], rect r, scrollfn fn);listbox newdroplist(char *list[], rect r, scrollfn fn);listbox newdropfield(char *list[], rect r, scrollfn fn);listbox newmultilist(char *list[], rect r, scrollfn fn);int isselected(listbox b, int index);void setlistitem(listbox b, int index);int getlistitem(listbox b);void changelistbox(listbox b, char *new_list[]);progressbar newprogressbar(rect r, int pmin, int pmax, int incr, int smooth);void setprogressbar(progressbar obj, int n);void stepprogressbar(progressbar obj, int n);void setprogressbarrange(progressbar obj, int pbmin, int pbmax);menubar newmenubar(actionfn adjust_menus);menu newsubmenu(menu parent, char *name);menu newmenu(char *name);menuitem newmenuitem(char *name, int key, menufn fn);/** Text editing functions.*/void undotext(textbox t);void cuttext(textbox t);void copytext(textbox t);void cleartext(textbox t);void pastetext(textbox t);void inserttext(textbox t, char *text);void selecttext(textbox t, long start, long end);void textselection(textbox t, long *start, long *end);/** Dialogs.*/#define YES 1#define NO -1#define CANCEL 0void apperror(char *errstr);void askok(char *info);int askokcancel(char *question);int askyesno(char *question);int askyesnocancel(char *question);char * askstring(char *question, char *default_string);char * askpassword(char *question, char *default_string);char * askfilename(char *title, char *default_name);char * askfilenamewithdir(char *title, char *default_name, char *dir);char * askfilesave(char *title, char *default_name);char * askUserPass(char *title);/** Time functions.*/int settimer(unsigned millisec);void settimerfn(timerfn timeout, void *data);int setmousetimer(unsigned millisec);void delay(unsigned millisec);long currenttime(void);/** Cursors.*/cursor newcursor(point hotspot, image img);cursor createcursor(point offset, byte *white_mask, byte *black_shape);cursor loadcursor(char *name);void setcursor(cursor c);/** Change the drawing state.*/drawstate copydrawstate(void);void setdrawstate(drawstate saved_state);void restoredrawstate(drawstate saved_state);void resetdrawstate(void);/** Library supplied variables.*/extern font SystemFont; /* system font */extern font Times; /* times roman font (serif) */extern font Helvetica; /* helvetica font (sans serif) */extern font Courier; /* courier font (fixed width) */#include <R_ext/libextern.h>LibExtern font FixedFont; /* fixed-width font */LibExtern cursor ArrowCursor; /* normal arrow cursor */LibExtern cursor BlankCursor; /* invisible cursor */LibExtern cursor WatchCursor; /* wait for the computer */LibExtern cursor CaretCursor; /* insert text */LibExtern cursor TextCursor; /* insert text */LibExtern cursor HandCursor; /* hand pointer */LibExtern cursor CrossCursor; /* cross pointer */#undef LibExtern#undef extern#ifdef __cplusplus}#endif /* end normal C declarations */#ifdef __cplusplus/* begin C++ declarations *//** Point and rectangle arithmetic.*/inline point operator + (point p, point p2) {p.x+=p2.x; p.y+=p2.y; return p;}inline point operator - (point p, point p2) {p.x-=p2.x; p.y-=p2.y; return p;}inline point operator += (point& p, point p2) {p.x+=p2.x; p.y+=p2.y; return p;}inline point operator -= (point& p, point p2) {p.x-=p2.x; p.y-=p2.y; return p;}inline rect operator + (rect r, point p) {r.x+=p.x; r.y+=p.y; return r;}inline rect operator - (rect r, point p) {r.x-=p.x; r.y-=p.y; return r;}inline rect operator += (rect& r, point p) {r.x+=p.x; r.y+=p.y; return r;}inline rect operator -= (rect& r, point p) {r.x-=p.x; r.y-=p.y; return r;}inline rect operator + (rect r, int i) {return insetr(r,-i);}inline rect operator - (rect r, int i) {return insetr(r,i);}inline rect operator ++ (rect& r) {return r=insetr(r,-1);}inline rect operator -- (rect& r) {return r=insetr(r,1);}inline rect operator += (rect& r, int i) {return r=insetr(r,-i);}inline rect operator -= (rect& r, int i) {return r=insetr(r,i);}inline int operator == (point p1, point p2) {return equalpt(p1,p2);}inline int operator == (rect r1, rect r2) {return equalr(r1,r2);}inline int operator != (point p1, point p2) {return !equalpt(p1,p2);}inline int operator != (rect r1, rect r2) {return !equalr(r1,r2);}#endif /* end C++ declarations */#endif /* Common cross-platform graphics library. */