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hgui.c
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hgui.c
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// Hermit simple GUI toolkit (with C and Bash support), mainly for Herminux
//=========================================================================
//------------------------ included libraries --------------------------
#include <stdlib.h> //C standard library
#include <stdio.h> //printf,sprintf,fprintf,etc.
#include <stdarg.h>
#include <string.h> //operations like strlen()
//#include <math.h>
//#include <time.h>
#include <errno.h>
#include <X11/Xlib.h> //libX11
#include <X11/Xos.h> //minimize system-dependencies
#include <X11/Xutil.h> //XWMHints,XChangeProperty,etc.
#include <X11/keysym.h> //key symbols
#include <X11/Xatom.h> //X11 predefined atoms & properties (e.g. size-hints)
#include <X11/Xlocale.h> //Internationalization and Unicode support (better doing it with freetype2 library)
//#ifdef USE_XFT
// #include <X11/Xft/Xft.h>
// XftDraw *xftdraw; XftColor xftcolor; XRenderColor xrcolor; XftFont *xftfont;
//#endif
#include "hgui.h"
#if defined(__cplusplus)
extern "C"
{
#endif
//window definition aliases/dependencies
#define NOICONIFY NOTASKBAR
#define NOMAXIMIZE NORESIZE //nomaximize is an alias to noresize, means: no maximize-button, which is straightforward in case of non-resizable window
//handle internal widget dependencies
#ifdef HGUI_BUTTONS
#define HGUI_TEXTLINES
#endif
#ifdef HGUI_PICBUTTONS
#define HGUI_BUTTONS
#define HGUI_PICTURES
#endif
#ifdef HGUI_TEXTBLOCKS
#define HGUI_TEXTLINES
#endif
#ifdef HGUI_TEXTBOXES
#define HGUI_TEXTLINES
#define HGUI_TEXTBLOCKS
#define HGUI_BLOCKS
#define HGUI_SCROLLBARS
#endif
#ifdef HGUI_SCROLLBARS
#define HGUI_BLOCKS
#endif
#ifdef HGUI_PICANIMS
#define HGUI_PICTURES
#endif
#ifdef HGUI_TEXTANIMS
#define HGUI_TEXTLINES
#endif
#if defined(HGUI_SLIDERS) || defined(HGUI_PROGBARS)
#define HGUI_TEXTLINES //for caption
#endif
//#if defined(HGUI_FILEBROWSER) || defined(HGUI_COLORCHOOSER)
// #define HGUI_CHILDWINDOWS
// #define HGUI_CHILDWIN_COMPOSITES
//#endif
//handle internal widget-groups
#if defined (HGUI_TEXTBUTTONS) || defined(HGUI_PICBUTTONS)
#define HGUI_BUTTONS
#endif
#if defined(HGUI_TEXTLINES) || defined(HGUI_TEXTBLOCKS) || defined(HGUI_TEXTBOXES) || defined(HGUI_TEXTANIMS)
#define HGUI_TEXTFIELDS
#endif
#if defined(HGUI_TEXTANIMS) || defined(HGUI_PICANIMS)
#define HGUI_ANIMATIONS
#endif
//----------------internal program constants and settings---------------
//some EWMH (Extended Window Manager Hints) values
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
#define SOURCE_INDICATION_NO_OLD 0
#define SOURCE_INDICATION_NORMAL 1
#define SOURCE_INDICATION_PAGERS 2
//#define DEBUG True //debug mode
#define EXIT_OK 0
#define EXIT_ERROR 1
#define EXIT_OUTOFMEM 2
#define RET_ERR -1
#define LINESIZE_MAX 1024 //maximum width of a text-line (in conversion)
#define TEXTSIZE_MAX 1000000 //maximum amount (bytes) of text to display in a textbox/textblock
#define XPM_DEPTH 32 //not the colour-depth, but the representation in memory
#define REFRESHRATE 100 //Hz the maximum frequency to refresh window-contents in case of destructive resizing / moving / covering (Expose-event)
#define REFRESHDELAY 1000000/REFRESHRATE
#define CHILDWIN_AMOUNT_MAX 64 //64
#define WIDGET_AMOUNT_MAX 1024
//#define POLYGON_MAX_POINTS 256 (using 'char' type prevents problems aready)
#define ANIM_AMOUNT_MAX WIDGET_AMOUNT_MAX
#define SCROLLTEXTWIDTH_MAX 1024 //max.length of a scrolltext-bar in characters
#define PROPSIZE_MAX 64 //Window-Manager property text max. size
//#define XBUILTINFONT "-*-fixed-medium-r-*-*-13-*-*-*-c-*-*-*" //"fixed" //"6x13" //probably built into every Xorg-servers, if no font described, this comes into play
#define XBUILTINFONT_WIDTH 6 //if the OS has a different font as default, these settings should be changed or loading XBUILTINFONT will be necessary at window-creation
#define XBUILTINFONT_HEIGHT 13
#define XBUILTINFONT_ASCENT 10
#define XBUILTINFONT_DESCENT XBUILTINFONT_HEIGHT-XBUILTINFONT_ASCENT
#define TABSIZE 4
#define BORDERSIZE 2
#define TRANSPCOLOR 0x808080 //fallback when no background-colour is given for transparency-supported XPM
#define BUTTFADE 0.1
//default theme (used for simple/automatic routines not having all inputs):
#define CONTRAST 0.4 //0.0 to 1.0
#define BGCOLOR 0xCEC8CA
#define FGCOLOR 0x001000
//#define DEFAULTFONT XBUILTINFONT //e.g. "-*-arial-medium-r-*-*-17-*-*-*-p-*-*-*"
#define HOLECOLOR 0x001100
#define BUTTBGCOL 0x10D428
#define BUTTFGCOL 0x202020
#define BUTTBEVEL 2
#define BUTTBORDER 1
#define BUTTBORDCOL HOLECOLOR
#define TEXTBGCOL 0xE0F0E0
#define TEXTFGCOL 0x203010
#define PROGBGCOL 0x80E0C0
#define PROGFGCOL 0x1020E0
#define PROGBEVEL BUTTBEVEL
#define PROGTEXTCOL 0xFFFFFF
#define SLIDERHOLE 2
#define SLIDSCALEW 20 //slide-scalemark-width should be automatic depending on horizontal knob-size
//#define SLIDEMARG 10 //should be automatic depending on vertical knob-size (which is derived from horizontal knobsize)
#define SLIDKNOBSIZE 16
#define SLIDBGCOL 0xC0E0D0
#define SLIDFGCOL 0x20C080
#define SLIDKNOBCOL 0xC020E0
#define SCROLLBGCOL 0xC0A080
#define SCROLLFGCOL 0x624050
#define SCROLLKNOBCOL 0xD8D0D4
#define SCROLLBUTTSIZE 14
#define ANIMDELAY 4 //in frames
#define SCROLLSPEEDY 1 //4 character-rows to jump on scrolloffsetheel in textbox
#define SCROLLSPEEDX 8 //pixel-rows to jump with horizontal scrolling
enum WidgetTypes { BUTTON,BUTTONDYN,BUTTONXPM,VSLIDER,HSLIDER,TEXTLINE,TEXTCENTER,TEXTBLOCK,TEXTBOX,HPROGBAR,VPROGBAR,VSCROLL,HSCROLL,BLOCK,BLOCKFILL,PICTURE,XPM,ANIM,ANIMXPM,TEXTSCROLL,
POINT,LINE,RECT,RECTFILL,ARC,ARCFILL,CIRCLE,CIRCLEFILL,ELLIPSE,ELLIPSEFILL,POLYGON,FILLSOLID
};
//---------------- macros (for readability and going towards cross-platform/framebuf(fbterm,kmscon)/SDL/alternative-X(nanoX,DirectFB) support) --------------
#ifdef __unix__ //X11 Xorg (note: space is not allowed between macro-function-name and left curly brace)
#define SETBGCOL(col) ( XSetBackground(hw->d,hw->gc,col) )
#define SETDRAWCOL(col) ( XSetForeground(hw->d,hw->gc,col) )
#define DRAWPOINT(x,y,col) ( SETDRAWCOL(col), XDrawPoint(hw->d,hw->w,hw->gc,x,y) )
#define DRAWLINE(x1,y1,x2,y2) ( XDrawLine(hw->d,hw->w,hw->gc,x1,y1,x2,y2) )
#define DRAWRECT(x1,y1,x2,y2) ( XDrawRectangle(hw->d,hw->w,hw->gc,x1,y1,x2,y2) )
#define DRAWRECTFILL(x1,y1,x2,y2) ( XFillRectangle(hw->d,hw->w,hw->gc,x1,y1,x2,y2) )
#define DRAWARC(x,y,wi,h,startdeg,extentdeg) ( XDrawArc(hw->d,hw->w,hw->gc,x,y,wi,h,startdeg*64,extentdeg*64) )
#define DRAWARCFILL(x,y,wi,h,startdeg,extentdeg) ( XFillArc(hw->d,hw->w,hw->gc,x,y,wi,h,startdeg*64,extentdeg*64) )
#define DRAWSTRINGN(x,y,text,col,font,len) ( XDrawString(hw->d,hw->w,setFontGC(hw,hw->bgcol,col,font), x, y, text, len) )
#define DRAWSTRING(x,y,text,col,font) ( XDrawString(hw->d,hw->w,setFontGC(hw,hw->bgcol,col,font), x, y, text, strlen(text)) )
#endif
//#ifdef __WIN32__
// #define SETDRAWCOL(col) ( ?! )
// #define DRAWPOINT(x,y,color) \ ( ? )
// #define DRAWLINE(x1,y1,x2,y2) \ ( ? )
// ....
//#endif
//------------------------- type and struct definitions ----------------
typedef struct Widget { //this is the common struct for widgets,
//1st public part: structure should match exactly to the 1st part of specific structs in hgui.h (like Button,VScroll,etc.))
union {
int x,x1;
} ;
union {
int y,y1;
} ;
union {
int x2w,x2,w,r,rx;
} ;
union {
int y2h,y2,h,ry;
} ;
union {
int zh,hpos,border,knobsize,depth,startdeg,scrollpixcnt;
} ;
union {
long zv,vpos,bevel,scalewidth,degree,scrollindex;
} ;
union {
unsigned long bgcol,color,transpcol;
} ;
union {
unsigned long fgcol,textcol;
} ;
union {
unsigned long knobcol,progtextcol,vpixsize,scrolldisplen;
} ;
union {
unsigned long captcol,vpixpos,scrolloffset;
} ;
union {
void *data,*text,*content,*title,*caption,*pixdata,*xpm,*xpmlist;
} ;
union {
float pos;
} ;
union {
float ratio,scale;
} ;
union {
char opt1,wrap,framedelay;
} ;
union {
char opt2,scrollbars,spdcnt;
} ;
union {
char opt3,pixstep,autofit;
} ; //char modeswitches; an alternative parametering method for one-bit mode-switches like wrap/scrollbars/autofit/edit/readonly/etc.
union {
char state,buttonstate,framecount,scrollendstate;
} ;
int actx1,acty1,actx2,acty2; //read-only (writing could fuck up the GUI)
//2nd private part: this must be hidden from the outside wordld, the following members are for internal use only. if needed, write function to get/set them
union {
void *fsp, *font, *fontstruct;
} ; //XFontStruct pointer
void (*callback)(); //callback-routine pointer
char grabbed;
int margin;
union {
int knobx1,knoby1;
} ;
union {
int hpixsize,knobx2,knoby2;
}; //active-area is calculated by widget-drawing routines in drawWidget()
char type;
int id;
void* parenthw;
void* argptr; //'id' is set by addWidget()
union {
void *child1,*vscroll;
} ;
union {
void *parentbox,*child2,*hscroll;
} ; //link parent (e.g. textbox) with children (e.g.scrollbars)
} Widget;
//#undef hWindow
typedef struct hWindow {
//1st more public part: structure should match the one in hgui.h if exists
unsigned long bgcol;
float contrast;
int eventx,eventy;
char eventbutton;
int width, height;
//2nd private part for internal use
int orig_width,orig_height;
//int norm_x,norm_y, norm_width,norm_height; //fullscreen status and position+dimensions before going to fullscreen state (restoring window-size/position should be handled by window-manager)
char options;
char *title;
void (*exitCallback)();
void *parenthw; //hWindow*
void* Child[CHILDWIN_AMOUNT_MAX];
int ChildAmount;
Widget W[WIDGET_AMOUNT_MAX];
int WidgetAmount; //'W':widget-array, WidgetAmount counts added items, used for Widget-ID
int AnimID[ANIM_AMOUNT_MAX];
int AnimAmount; //so no need to look up all widget-array to check if animations are added
Display *d;
int fd; /*Drawable*/ Window w;
int s;
GC gc, defgc;
Atom wm_protocols,delete_window;
char dragging;
int exposecnt, resizecnt, exitsig;
int id;
} hWindow;
typedef struct TextDim {
int x,y;
long w;
short h, ascent,descent;
} TextDim;
typedef struct TextBoxDim {
long w, h, rowcount, vpixpos;
} TextBoxDim;
//----------------- global (preferably constant) content ---------------
const char ErrPfx[]="ERROR(hgui): ", WarnPfx[]="WARNING(hgui): ";
const char ERRORTXT_OUTOFMEM[]="Out of memory!", EmptyString[]="";
Widget eWidget;
void* EmptyWidget=&eWidget;
XFontStruct eFontStruct;
XFontStruct* EmptyFontStruct=&eFontStruct;
XFontStruct *xfont=NULL; //built-in Xorg font
short DownArrowPoints[]= {-4,5, 5,5, 0,10}, UpArrowPoints[]= {-5,9, 5,9, 0,3};
short RightArrowPoints[]= {5,-5, 5,5, 10,0}, LeftArrowPoints[]= {9,-5, 9,5, 4,0};
//--------------------- internal function prototypes -------------------
//(public functions are prototyped in the header-file, local functions are in dependency-order)
int dynCoordX(hWindow *hw, int x);
int dynCoordY(hWindow *hw, int y);
TextDim drawTextScrollFrame(hWindow *hw, Widget *wp, int x1, int y1, int x2, int y2, char *text);
void cleanUpRect(hWindow *hw, int x1o, int y1o, int x2o, int y2o, int x1, int y1, int x2, int y2);
void refreshWidget(Widget *w);
Bool putAnimXPMframe(hWindow *hw, int id, int x, int y, unsigned long transpcol, void* xpmlist[], int framenumber );
//------------------------- basic GUI routines -------------------------
XPMstruct XPMtoPixels(char* source[], unsigned long bgcol) //only suitable for XPMs with around max. 50 colours (single-character colour-lookups)
{
int i,j,k,sourceindex,pixdataindex,width,height,colours,charpix,transpchar=0xff;
unsigned int colr[256],colg[256],colb[256];
XPMstruct xpms;
unsigned char colchar[256], colcode,colindex, transpr=(bgcol&0xFF0000)/65536,transpg=(bgcol&0xFF00)/256,transpb=bgcol&0xFF;
sscanf(source[0],"%d %d %d %d",&width,&height,&colours,&charpix); //printf("width:%d, height:%d, colours:%d, charpix:%d",width,height,colours,charpix);
unsigned char *pixdata = malloc (width*height*XPM_DEPTH/8); //32 is sure to have enough room
for (i=0; i<colours; i++) {
if (sscanf(source[1+i],"%c%*s #%2X%2X%2X",&colchar[i],&colr[i],&colg[i],&colb[i])!=4) transpchar=colchar[i];
}
for (i=0; i<height; i++) {
for (j=0; j<width; j++) {
sourceindex=(i*width+j);
colcode=source[colours+1+i][j];
for(k=0; k<colours; k++) if (colcode==colchar[k]) break;
colindex=k;
pixdataindex=(i*width+j)*XPM_DEPTH/8;
pixdata[pixdataindex+0] = (colcode!=transpchar)?colb[colindex]:transpb; //Blue 0x502040
pixdata[pixdataindex+1] = (colcode!=transpchar)?colg[colindex]:transpg; //Green
pixdata[pixdataindex+2] = (colcode!=transpchar)?colr[colindex]:transpr; //Red
pixdata[pixdataindex+3] = (colcode==transpchar)?0x00:0xff ;//Aplha - 0:fully transparent...0xFF:fully opaque /Xlib has no alpha-channel support, Xrender has transparency-support
}
}
xpms.pixdata=pixdata;
xpms.width=width;
xpms.height=height;
return xpms;
}
Display* openDisplay()
{
Display *d=XOpenDisplay(NULL);
if(d==NULL) {
fprintf(stderr,"%s Can't open display.\n",ErrPfx);
exit(EXIT_ERROR);
}
return d;
}
//tip: 'xprop' is an useful utility to check the window's properties
Atom changeWMprop(hWindow *hw, char* property, char* data, Bool overwrite) //window-manager hint properties _NET_WM_WINDOW_TYPE / _NET_WM_STATE / MOTIF_WM_HINTS / etc. which are not settable directly by Xlib convenience functions
{
Atom wmatom = XInternAtom(hw->d,data,False);
XChangeProperty(hw->d,hw->w, XInternAtom(hw->d,property,False), XA_ATOM, 32,overwrite?PropModeReplace:PropModeAppend, (unsigned char*) &wmatom, 1);
return wmatom;
}
void setWindowType(hWindow *hw, char *type)
{
//called when creating window, preferably not called afterwards
char prop[PROPSIZE_MAX];
sprintf(prop,"_NET_WM_WINDOW_TYPE_%s",type); //printf("Setting window as type %s\n",type);
changeWMprop(hw,"_NET_WM_WINDOW_TYPE",prop,True);
}
Atom addWindowState(hWindow *hw, char *type)
{
char prop[PROPSIZE_MAX];
sprintf(prop,"_NET_WM_STATE_%s",type); //printf("Setting window to state %s\n",type);
return changeWMprop(hw,"_NET_WM_STATE",prop,False);
}
void sendStateClientMessage(hWindow *hw, char *type, char action)
{
//informs the window-manager about the state-change
char prop[PROPSIZE_MAX];
sprintf(prop,"_NET_WM_STATE_%s",type);
Atom msgtypeatom=XInternAtom(hw->d,"_NET_WM_STATE",False), stateatom=XInternAtom(hw->d,prop,False);
XEvent stev;
stev.xclient.type=ClientMessage;
stev.xclient.serial=0;
stev.xclient.send_event=True;
stev.xclient.message_type=msgtypeatom;
stev.xclient.window=hw->w;
stev.xclient.format=32;
stev.xclient.data.l[0]=action;
stev.xclient.data.l[1]=stateatom;
stev.xclient.data.l[2]=0;
stev.xclient.data.l[3]=SOURCE_INDICATION_NORMAL;
stev.xclient.data.l[4]=0;
XSendEvent(hw->d, RootWindow(hw->d,hw->s), True, StructureNotifyMask | SubstructureNotifyMask | SubstructureRedirectMask , &stev);
XSync(hw->d,True);
}
void setWindowStates(hWindow *hw) //all-at-once, starting from empty to avoid accumulation/duplication
{
//based on current value of hw->options //XWMHints *hints = XAllocWMHints(); hints->flags=StateHint; hints->initial_state=IconicState; XSetWMHints(hw->d,hw->w,hints);
Atom msgtypeatom=XInternAtom(hw->d,"_NET_WM_STATE",False);
XDeleteProperty(hw->d,hw->w,msgtypeatom);
if (hw->options&NOTASKBAR) addWindowState(hw,"SKIP_TASKBAR");
if (hw->options&ALWAYSONTOP) addWindowState(hw,"ABOVE");
if (hw->options&MODALWIN) addWindowState(hw,"MODAL");
if (hw->options&FULLSCREEN) addWindowState(hw,"FULLSCREEN");
//sendStateClientMessage should be called after these changes to inform window-manager with XSendEvent()
}
void setWinTypeToOptions(hWindow *hw, short options)
{
//at the moment I don't know about distinct properties (other than nonstandard _MOTIF_WM_HINTS) for titlebar-button-selection / window-decoration-disabling, until that this function is handy
if (options==NOMAXIMIZE) setWindowType(hw,"UTILITY");
else if ((options&NODECOR && options&ALWAYSONTOP) || (options&TRAYAPP)) setWindowType(hw,"DOCK"); //DOCKAPP needs proper initialization afterwards (not to seen in taskbar, but be seen in system-tray)
else if (options&NOTASKBAR) {
if (options&NODECOR) setWindowType(hw,"NOTIFICATION");
else if (options&NOICONIFY) setWindowType(hw,"DIALOG"); //NOICONIFY is only relevant if there's NOTASKBAR, vice-versa, and is more important (not to have minimize-icon) than NOMAXIMIZE, ALWAYSONTOP can be set later
else if (options&NOMAXIMIZE) {
if (options&ALWAYSONTOP) setWindowType(hw,"TOOLBAR");
else setWindowType(hw,"MENU");
}
} else if (options&NODECOR) setWindowType(hw,"SPLASH");
else setWindowType(hw,"NORMAL"); //printf("%d\n",options);
}
hWindow* createAndSetWindow(hWindow *hw, hWindow *parenthw, Window *rootw, int x, int y, int w, int h, char *title, unsigned long bgcol, unsigned long fgcol, int minwidth, int minheight, short options, char* xpmicon[], void* exitCallback, int argc, char **argv )
{
if(hw==NULL) return NULL;
Pixmap icon=None;
hw->exitsig=0;
hw->orig_width=w;
hw->orig_height=h;
hw->bgcol=bgcol; //hw->norm_x=x; hw->norm_y=y; hw->norm_width=w; hw->norm_height=h;
if (options&NORESIZE) {
minwidth=w;
minheight=h;
};
hw->exitCallback=exitCallback;
hw->w=XCreateSimpleWindow(hw->d,*rootw,x,y,w,h,(options&(NODECOR||NOWINMAN))?0:BORDERSIZE,BlackPixel(hw->d,hw->s),bgcol);
hw->options=options;
hw->gc=XCreateGC(hw->d,hw->w,0,NULL);
hw->defgc=XCreateGC(hw->d,hw->w,0,NULL); //DefaultGC(hw->d,hw->s); //3rd parameter for XCreateGC could be (GCFont|GCForeground|GCBackground), 4th is &XGCValues
XSizeHints *sizehints=XAllocSizeHints();
sizehints->flags=PPosition|PMinSize;
sizehints->min_width=minwidth;
sizehints->min_height=minheight;
if (options&NORESIZE) {
sizehints->flags|=PMaxSize;
sizehints->max_width=minwidth;
sizehints->max_height=minheight;
}
if (xpmicon!=NULL) {
XPMstruct xpms=XPMtoPixels(xpmicon,TRANSPCOLOR);
XImage *iconimg = XCreateImage(hw->d,CopyFromParent,DefaultDepth(hw->d,hw->s),ZPixmap,0,xpms.pixdata,xpms.width,xpms.height,XPM_DEPTH,0);
XInitImage(iconimg); //Pixmap icon=XCreatePixmapFromBitmapData(hw->d,hw->w,icon_pixels,ICON_WIDTH,ICON_HEIGHT,0x001122,0xFFEECC,XPM_DEPTH);
icon=XCreatePixmap(hw->d,hw->w,xpms.width,xpms.height,DefaultDepth(hw->d,hw->s));
XPutImage(hw->d,icon,hw->gc,iconimg,0,0,0,0,xpms.width,xpms.height);
XDestroyImage(iconimg);
}
XSetStandardProperties(hw->d,hw->w,title,title,icon,argv,argc,sizehints); //XSetWMProperties(hw->d,hw->w,NULL,NULL,NULL,0,sizehints,NULL,NULL); //XSetWMSizeHints(hw->d,hw->w,sizehints,sizeatom); //setIconXPM(hw->d,hw->w,hw->s,icon_xpm); //setTitle(hw->d,hw->w,title); //XListFonts()
//XSetWindowBackgroundPixmap(hw->d,hw->w,None); //avoid flicker with trick, by setting empty pixmap background and repainting the window in eventloop at expose-events
XSetWindowAttributes xwa;
xwa.bit_gravity=StaticGravity;
xwa.override_redirect=(options&NOWINMAN)?True:False; //override-redirect causes window to be a 'splash-creen' with no titlebar (but black border?) on top of all windows, also _NET_WM_WINDOW_TYPE property can (& should) be used to set splash
XChangeWindowAttributes(hw->d,hw->w,CWBitGravity|CWOverrideRedirect,&xwa); //bit_gravity=StaticGravity to avoid flickering made by repainting background by X automatically when resizing window
if(options) setWinTypeToOptions(hw,options); //this is not needed if I find a way to tell WM which particular buttons to include in titlebar or not to display window-decoration at all
if(options) setWindowStates(hw); //initialize window-state based on 'options'
//#ifdef USE_XFT xftdraw=XftDrawCreate(hw->d,hw->w,DefaultVisual(hw->d,hw->s),DefaultColorMap(hw->d,hw->s));
XMapWindow(hw->d,hw->w);
XClearWindow(hw->d,hw->w);
XFlush(hw->d);
XSelectInput(hw->d,hw->w,ExposureMask|StructureNotifyMask|KeyPressMask|ButtonPressMask|Button1MotionMask|Button3MotionMask); //XCopyGC(hw->d,XDefaultGC(hw->d,hw->s),hw->gc,GCFont);
xfont=NULL;//=loadFont(XBUILTINFONT); //Font *font=XLoadFont(hw->d,"6x13"); XFontStruct *fs=XLoadQueryFont(hw->d,"6x13"); //XGCValues gcval; XGetGCValues(hw->d,DefaultGC(hw->d,hw->s),GCFont,&gcval);
SETDRAWCOL(FGCOLOR); //XSetFont(hw->d,hw->gc,defont->fid); //mkfontscale,mkfontdir->/usr/share/fonts.dir //Font fontx=gcval.font; xfont=XQueryFont(hw->d,fontx);
hw->wm_protocols=XInternAtom(hw->d,"WM_PROTOCOLS",False);
hw->delete_window=XInternAtom(hw->d,"WM_DELETE_WINDOW",False);
XSetWMProtocols(hw->d,hw->w,&hw->delete_window,1); //Set WM protocols (for proper close-button hangling throug ClientMessage event-type)
if(parenthw!=NULL) {
hw->parenthw=parenthw;
parenthw->Child[parenthw->ChildAmount]=hw;
hw->id=parenthw->ChildAmount;
parenthw->ChildAmount++;
} else hw->parenthw=NULL;
hw->title=getTitle(hw);
hw->contrast=CONTRAST;
hw->width=getWinWidth(hw);
hw->height=getWinHeight(hw);
hw->WidgetAmount=0;
hw->AnimAmount=0;
return hw;
}
hWindow* createWindow (int x, int y, int w, int h, char *title, unsigned long bgcol, unsigned long fgcol, int minwidth, int minheight, short options, char* xpmicon[], void (*exitCallback)() )
{
//setlocale(LC_CTYPE,"en_EN.UTF-8"); if(XSupportsLocale()!=True){printf("\n %s No Locale Support\n",WarnPfx);} else XSetLocaleModifiers("");
hWindow *hw=malloc(sizeof(hWindow));
if(hw==NULL) {
printf("%s %s",ErrPfx,ERRORTXT_OUTOFMEM);
exit(EXIT_OUTOFMEM);
}
hw->d=openDisplay();
hw->s=DefaultScreen(hw->d);
hw->fd=ConnectionNumber(hw->d);
return createAndSetWindow(hw,NULL,&RootWindow(hw->d,hw->s),x,y,w,h,title,bgcol,fgcol,minwidth,minheight,options,xpmicon,exitCallback,0,NULL);
}
#ifdef HGUI_CHILDWINDOWS
hWindow* createChildWindow (hWindow *parenthw, int x, int y, int w, int h, char *title, unsigned long bgcol, unsigned long fgcol, int minwidth, int minheight, short options, char* xpmicon[], void (*exitCallback)() )
{
if(parenthw->ChildAmount>=CHILDWIN_AMOUNT_MAX) {
printf("%s Reached maximum child-window amount (%d). Child-window \"%s\" was not created!\n",ErrPfx,CHILDWIN_AMOUNT_MAX,title);
return NULL;
}
//x+=getWinX(parenthw);y+=getWinY(parenthw); relative location to parent-window (might be an issue if parent-window is not in place / minimized -> better leave it for Window-Manager
hWindow *hw=malloc(sizeof(hWindow));
if(hw==NULL) {
printf("%s %s",ErrPfx,ERRORTXT_OUTOFMEM);
return NULL;
}
hw->d=parenthw->d;
hw->s=parenthw->s;
createAndSetWindow(hw,parenthw,&RootWindow(hw->d,hw->s),x,y,w,h,title,bgcol,fgcol,minwidth,minheight,options,xpmicon,exitCallback,0,NULL);
return hw;
}
hWindow* createSubWindow(hWindow *parenthw, int x1, int y1, int x2, int y2, char *title, unsigned long bgcol, unsigned long fgcol)
{
if(parenthw->ChildAmount>=CHILDWIN_AMOUNT_MAX) {
printf("%s Reached maximum child-window amount (%d). Subwindow \"%s\" was not created!\n",ErrPfx,CHILDWIN_AMOUNT_MAX,title);
return NULL;
}
x1=dynCoordX(parenthw,x1);
y1=dynCoordY(parenthw,y1);
x2=dynCoordX(parenthw,x2);
y2=dynCoordY(parenthw,y2); //pos might be relative to right/bottom window-edges (negative coordinate-values)
hWindow *hw=malloc(sizeof(hWindow));
if(hw==NULL) {
printf("%s",ERRORTXT_OUTOFMEM);
return NULL;
}
hw->d=parenthw->d;
hw->s=parenthw->s; //hw->options=0;
createAndSetWindow(hw,parenthw,&parenthw->w,x1,y1,x2-x1,y2-y1,title,bgcol,fgcol,0,0,0b0000,NULL,NULL,0,NULL);
return hw;
}
#endif //HGUI_CHILDWINDOWS
void moveWindow (hWindow *hw, int x, int y)
{
if(hw==NULL) return;
XMoveWindow(hw->d,hw->w,x,y);
}
void resizeWindow (hWindow *hw, int w, int h)
{
if(hw==NULL) return;
XResizeWindow(hw->d,hw->w,w,h);
}
void iconifyWindow(hWindow *hw)
{
if(hw==NULL) return;
XIconifyWindow(hw->d,hw->w,hw->s);
}
void hideWindow(hWindow *hw)
{
if(hw==NULL) return; //_NET_WM_STATE_HIDDEN or XWithdrawWindow(hw->d,hw->w,hw->s) does nearly the same (no window and no icon is seen)
XUnmapWindow(hw->d, hw->w);
}
void showWindow(hWindow *hw)
{
if(hw==NULL) return;
XMapWindow(hw->d, hw->w);
}
void toggleFullscreen(hWindow *hw)
{
if(hw==NULL) return;
hw->options^=FULLSCREEN;
//normally restoring original position and size after fullscreen should be handled by window-manager
//if(hw->options&FULLSCREEN) { hw->norm_width=getWinWidth(hw); hw->norm_height=getWinHeight(hw); hw->norm_x=getWinX(hw); hw->norm_y=getWinY(hw); setWindowStates(hw); }
//else { setWindowStates(hw); resizeWindow(hw,hw->norm_width,hw->norm_height); moveWindow(hw,hw->norm_x,hw->norm_y); }
//XUnpapMapWindow-XMapWindow trickery is not good, use XSendEvent to send _NET_WM_STATE ClientMessage to rootwindow instead:
setWindowStates(hw);
sendStateClientMessage(hw,"FULLSCREEN",hw->options&FULLSCREEN?_NET_WM_STATE_ADD:_NET_WM_STATE_REMOVE);
} //XMapWindow(hw->d,hw->w); XSync(hw->d,True); }
void hideMouseCursor(hWindow *hw) //{ XUndefineCursor(hw->d,hw->w); } //XDefineCursor(hw->d,hw->w,None); }
{
XColor black;
black.red=black.green=black.blue=0;
static char emptydat[]= {0,0,0,0,0,0,0,0};
Pixmap emptypix=XCreateBitmapFromData(hw->d,hw->w,emptydat,8,8);
Cursor blankcur=XCreatePixmapCursor(hw->d,emptypix,emptypix,&black,&black,0,0);
XDefineCursor(hw->d,hw->w,blankcur);
XFreeCursor(hw->d,blankcur);
XFreePixmap(hw->d,emptypix);
}
//void setMouseCursor(hWindow *hw) { XColor fc, bc; Cursor cur=XCreatePixmapCursor(hw->d,icon,icon,&fc,&bc,1,1); XDefineCursor(hw->d,hw->w,cur);}
hWindow* destroyWindow(hWindow *hw)
{
if(hw==NULL) return NULL;
hWindow *parenthw=hw->parenthw;
//#ifdef USE_XFT XftDrawDestroy(xftdraw);
if(parenthw==NULL)XFreeGC(hw->d,hw->gc);
XDestroyWindow(hw->d,hw->w);
if(parenthw==NULL)XCloseDisplay(hw->d);
else {
parenthw->Child[hw->id]=NULL;
}
free(hw);
return NULL;
}
void setClass(hWindow *hw, char *class, char *name)
{
if(hw==NULL) return;
XClassHint *ch=XAllocClassHint();
ch->res_name=name;
ch->res_class=class;
XSetClassHint(hw->d,hw->w,ch);
};
void setTitle(hWindow *hw, char *title)
{
if(hw==NULL) return; //XSetWMName(hw->d,hw->w,XTextProperty *text)
XStoreName(hw->d,hw->w,title);
XSetIconName(hw->d,hw->w,title);
hw->title=title;
}
void setIconXPM(hWindow *hw, char *xpm[])
{
if(hw==NULL) return;
XPMstruct xpms=XPMtoPixels(xpm,TRANSPCOLOR);
XImage *iconimg = XCreateImage(hw->d,CopyFromParent,DefaultDepth(hw->d,hw->s),ZPixmap,0,xpms.pixdata,xpms.width,xpms.height,XPM_DEPTH,0); //bitmap_pad: how much bits a colour is stored on
XInitImage(iconimg); //pic->byte_order = LSBFirst; pic->bitmap_bit_order = LSBFirst; //The bitmap_bit_order doesn't matter with ZPixmap images.
Pixmap icon=XCreatePixmap(hw->d,hw->w,xpms.width,xpms.height,DefaultDepth(hw->d,hw->s));
XPutImage(hw->d,icon,hw->gc,iconimg,0,0,0,0,xpms.width,xpms.height); //Pixmap icon=XCreatePixmapFromBitmapData(hw->d,hw->w,icon_pixels,ICON_WIDTH,ICON_HEIGHT,0xffffff,0,XPM_DEPTH);
XWMHints *hints = XAllocWMHints();
hints->flags=IconPixmapHint;
hints->icon_pixmap=icon;
XSetWMHints(hw->d,hw->w,hints);
XDestroyImage(iconimg);
XUnmapWindow(hw->d,hw->w);
XMapWindow(hw->d,hw->w);
XFree(hints);
XSync(hw->d,False); //XFlush(hw->d); //XUnmapWindow-XMapWindow - a dirty hack for JWM to refresh icon (XSync seems not enough. What about XSendEvent ClientMessage _NET_WM_ICON?)
}
//to get display-size (monitor-resolution), DisplayWidth(hw->d,hw->s) and DisplayHeight(hw->d,hw->s) can be used, or XGetGeometry()
hWindow* getWin(void *widgetptr)
{
Widget* wp=widgetptr;
return wp->parenthw;
}
int getScreenWidth()
{
Display *d=openDisplay();
return XDisplayWidth(d,DefaultScreen(d));
}
int getScreenHeight()
{
Display *d=openDisplay();
return XDisplayHeight(d,DefaultScreen(d));
}
int getWinWidth(hWindow *hw)
{
if(hw==NULL) return RET_ERR;
XWindowAttributes xwa;
XGetWindowAttributes(hw->d,hw->w,&xwa);
return xwa.width;
}
int getWinHeight(hWindow *hw)
{
if(hw==NULL) return RET_ERR;
XWindowAttributes xwa;
XGetWindowAttributes(hw->d,hw->w,&xwa);
return xwa.height;
}
int getWinX(hWindow *hw)
{
if(hw==NULL) return RET_ERR;
XWindowAttributes xwa;
int x,y;
Window child;
XTranslateCoordinates(hw->d,hw->w,RootWindow(hw->d,hw->s),0,0,&x,&y,&child);
XGetWindowAttributes(hw->d,hw->w,&xwa);
return x-xwa.x;
}
int getWinY(hWindow *hw)
{
if(hw==NULL) return RET_ERR;
XWindowAttributes xwa;
int x,y;
Window child;
XTranslateCoordinates(hw->d,hw->w,RootWindow(hw->d,hw->s),0,0,&x,&y,&child);
XGetWindowAttributes(hw->d,hw->w,&xwa);
return y-xwa.y;
}
int getWidgetCount(hWindow *hw)
{
if(hw==NULL) return RET_ERR;
return hw->WidgetAmount;
}
char* getTitle (hWindow *hw)
{
if (hw==NULL) return (char*)EmptyString;
char* charptr;
XFetchName(hw->d,hw->w,&charptr);
return charptr;
}
float getContrast (hWindow *hw)
{
if(hw==NULL) return RET_ERR;
return hw->contrast;
}
void setContrast(hWindow *hw, float contrast)
{
if(hw==NULL) return;
correctRange(&contrast);
hw->contrast=contrast;
refreshWindow(hw);
}
void setWinCallback (hWindow *hw, void (*callback)() )
{
if(hw==NULL) return;
hw->exitCallback=callback;
}
char eventButton (hWindow *hw)
{
if(hw==NULL) return RET_ERR;
return hw->eventbutton;
}
int eventX (hWindow *hw)
{
if(hw==NULL) return RET_ERR;
return hw->eventx;
}
int eventY (hWindow *hw)
{
if(hw==NULL) return RET_ERR;
return hw->eventy;
}
unsigned long fadeCol(unsigned int col, float bri) //positive bri values cause brightening, negative values cause darkening
{
int r,g,b;
if (bri==0.0) return col;
if (bri<-1.0) bri=-1.0;
if(bri>1.0) bri=1.0; //saturation logic for input
else {
r=(int)(((col&0xFF0000)/65536)*(1.0+bri));
g=(int)(((col&0xFF00)/256)*(1.0+bri));
b=(int)((col&0xFF)*(1.0+bri));
}
if (r>255) r=255;
if(g>255) g=255;
if(b>255) b=255;
if(r<0) r=0;
if(g<0) g=0;
if(b<0) b=0; //saturation logic for output
return r*65536+g*256+b;
}
int roundfl (float num)
{
if (num>=0 && num-(int)num>=0.5) return ((int)num+1);
else if (num<0 && num-(int)num<-0.5) return ((int)num)-1;
else return (int)num;
}
int dynCoordX(hWindow *hw, int x) //turn negative X coordinate into dynamic coordinate (counted from right-edge of the window)
{
if(hw->options&ZOOMABLE) x=roundfl(x*((float)hw->width/(float)hw->orig_width));
if(x<0) return hw->width+x;
else return x;
}
//these 2 functions also provide zooming if set for the window.
int dynCoordY(hWindow *hw, int y) //turn negative Y coordinate into dynamic coordinate (counted from bottom-edge of the window)
{
if(hw->options&ZOOMABLE) y=roundfl(y*((float)hw->height/(float)hw->orig_height));
if(y<0) return hw->height+y;
else return y;
}
//this sets the region where the widget is sensitive for mouse-click/scroll events
int setActiveRegion(hWindow *hw, int id, int x1, int y1, int x2, int y2, char margin, int knobxy1, int knobxy2)
{
hw->W[id].actx1=x1;
hw->W[id].acty1=y1;
hw->W[id].actx2=x2;
hw->W[id].acty2=y2;
hw->W[id].margin=margin;
hw->W[id].knobx1=knobxy1;
hw->W[id].knobx2=knobxy2;
}
#if defined(HGUI_TEXTFIELDS) || defined(HGUI_TEXTBUTTONS)
XFontStruct* loadFont(hWindow *hw, char *fontname)
{
//#ifdef USE_XFT return XftFontOpenName(hw->d,hw->s,"Arial-17");
if (fontname==NULL) return NULL;
XFontStruct* fs = XLoadQueryFont(hw->d,fontname);
if(fs==NULL) printf("%s Font %s not found! Using Xorg built-in 6x13 fixed font in place of it.\n",WarnPfx,fontname); //XLoadQueryFont returns NULL ('xfont' fallback) of font not found
return fs;
}
XFontStruct* getFontStruct(hWindow *hw, char *fontname)
{
if(hw==NULL) return EmptyFontStruct; //should prevent redundand loading of fonts; also: only creating FontStruct for a new size of the same type
return loadFont(hw,fontname);
}
GC setFontGC (hWindow *hw, unsigned long bgcol, unsigned long fgcol, XFontStruct *font)
{
if (font==NULL) {
XSetBackground (hw->d,hw->defgc,bgcol);
XSetForeground(hw->d,hw->defgc,fgcol);
return hw->defgc;
} else {
XSetBackground (hw->d,hw->gc,bgcol);
SETDRAWCOL(fgcol);
XSetFont(hw->d,hw->gc,font->fid);
}
return hw->gc;
}
int getTextWidth(char *text, XFontStruct *font,int charcount)
{
if (font!=NULL) return XTextWidth(font,text,charcount);
else return XBUILTINFONT_WIDTH*charcount;
}
TextDim getTextDimN (char *text, XFontStruct *font, int len)
{
TextDim dim;
int dir,ascent,descent;
XCharStruct overall; //XChar2b widetxt[]; // font->max_bounds.ascent; font->max_bounds.width ?
//#ifdef USE_XFT XGlyphInfo extents; XftTextExtents8(hw->d,font,(XftChar8*)text,len,&extents); -> extents.width; extents.height;
if (font!=NULL) {
XTextExtents(font,text,len,&dir,&ascent,&descent,&overall); //printf("\n%d,%d,%s",overall.width,height,text);
dim.h=ascent+descent;
dim.w=overall.width;
dim.ascent=ascent;
dim.descent=descent;
} else {
dim.w=XBUILTINFONT_WIDTH*len;
dim.h=XBUILTINFONT_HEIGHT;
dim.ascent=XBUILTINFONT_ASCENT;
dim.descent=XBUILTINFONT_DESCENT;
}
return dim;
}
TextDim getTextDim (char *text, XFontStruct *font)
{
return getTextDimN(text,font,strlen(text));
}
#endif //textfields/buttons
#ifdef HGUI_TEXTBLOCKS
long findSpaceBack(char *text, long pos)
{
for(; pos>0; pos--) {
if(text[pos]==' '||text[pos]=='\t') break;
}
return pos;
}
//long findNonSpaceBack(char *text, long pos) { for(;pos>0;pos--) {if(text[pos]!=' '&&text[pos]!='\t') break;} return pos; }
#endif
void setClipRegion(hWindow *hw, int x1, int y1, int x2, int y2)
{
XRectangle rectangle[1];
rectangle[0].x=x1, rectangle[0].y=y1, rectangle[0].width=x2-x1, rectangle[0].height=y2-y1;
XSetClipRectangles(hw->d,hw->gc,0,0,rectangle,1,Unsorted);
XSetClipRectangles(hw->d,hw->defgc,0,0,rectangle,1,Unsorted);
}
void removeClipRegion(hWindow *hw)
{
XGCValues gcval; //XGetGCValues(hw->d,gcontext,GCClipXOrigin|GCClipYOrigin|GCClipMask,&gcval);
gcval.clip_x_origin=0;
gcval.clip_y_origin=0;
gcval.clip_mask=None;
XChangeGC(hw->d,hw->gc,GCClipXOrigin|GCClipYOrigin|GCClipMask,&gcval);
XChangeGC(hw->d,hw->defgc,GCClipXOrigin|GCClipYOrigin|GCClipMask,&gcval);
}
//-------------------------- Graphic Primitives ------------------------
#ifdef HGUI_PRIMITIVES
void drawPoint(hWindow *hw, int x, int y, unsigned long col)
{
if(hw==NULL) return;
DRAWPOINT(x,y,col);
}
void drawLine(hWindow *hw, int x1, int y1, int x2, int y2, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWLINE(x1,y1,x2,y2);
}
void drawArc(hWindow *hw, int x1, int y1, int x2, int y2, int startdeg, int degree, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWARC(x1,y1,x2-x1,y2-y1,startdeg,degree);
}
void drawArcFill(hWindow *hw, int x1, int y1, int x2, int y2, int startdeg, int degree, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWARCFILL(x1,y1,x2-x1,y2-y1,startdeg,degree);
}
void drawRect(hWindow *hw, int x1, int y1, int x2, int y2, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWRECT(x1,y1,x2-x1,y2-y1);
}
void drawRectFill(hWindow *hw, int x1, int y1, int x2, int y2, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWRECTFILL(x1,y1,x2-x1,y2-y1);
}
void drawCircle(hWindow *hw, int x, int y, int r, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWARC(x-r,y-r,r*2,r*2,0,360);
}
void drawCircleFill(hWindow *hw, int x, int y, int r, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWARCFILL(x-r,y-r,r*2,r*2,0,360);
}
void drawEllipse(hWindow *hw, int x, int y, int rx, int ry, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWARC(x-rx,y-ry,rx*2,ry*2,0,360);
}
void drawEllipseFill(hWindow *hw, int x, int y, int rx, int ry, unsigned long col)
{
if(hw==NULL) return;
SETDRAWCOL(col);
DRAWARCFILL(x-rx,y-ry,rx*2,ry*2,0,360);
}
void drawPolygon(hWindow *hw, unsigned long col, char count, ...) //variadic function with ellipsis (...) as last parameter, taking 'count' number of parameters
{
if(hw==NULL) return;
va_list arg;
int i,x,y;
va_start (arg, count);
XPoint *points=malloc(count*sizeof(XPoint));
for (i=0; i<count; i++) {
points[i].x=va_arg(arg,int);
points[i].y=va_arg(arg,int);
} //points[i].x=dynCoordX(hw,points[i].x); points[i].y=dynCoordX(hw,points[i].y); }
va_end (arg);
XFillPolygon(hw->d,hw->w,hw->gc,points,count,Complex,CoordModeOrigin);
free(points);
}
#endif //HGUI_PRIMITIVES
//-------------------------- Basic widget drawing routines -----------------------------
#ifdef HGUI_PICTURES
XImage* putPicture(hWindow *hw, int x, int y, char* pixeldata, int width, int height, int depth, int id)
{
//no scaling or colour conversion, the image-data must be prepared; transparency could be handled for images that have alpha channel
XImage *pic = XCreateImage(hw->d,CopyFromParent,DefaultDepth(hw->d,hw->s),ZPixmap,0,pixeldata,width,height,(depth>=24)?32:16,0); //bitmap_pad: how much bits a colour is stored on, 32 for 24/32bit, 16 for 15/16bit
XInitImage(pic); //pic->byte_order = LSBFirst; //pic->bitmap_bit_order = LSBFirst; //The bitmap_bit_order doesn't matter with ZPixmap images.
XPutImage(hw->d,hw->w,hw->gc,pic,0,0,x,y,width,height);
return pic; //XDestroyImage(pic);
}