/************************************************************************************************************************************************************************************************* * * File : Main.cxx * * Component : Main . * * Module : Main . * * Description : Main - entry - file for Linux . Demonstration of X Windows - X11 - function usage . * Please Note :- this is just a quickly thrown together file used to work out how to use the functions . As such coding standards have not been applied . * * Copyright (C) : World Computers Ltd. ( U.K. ) . 2000 - 2010 . All rights reserved ! * Proprietor :- Mr Kim Lyon . * * This material is subject to the proprietary rights of World Computers Ltd. ( U.K. ) . Usage of this * material is governed by the usage agreement and the associated usage license . The recipient of this * software implicitly accepts the terms of the usage agreement . In addition the recipient implicitly * accepts that commercial use of this material can only occur on grant of the usage license . * * Documentation for the module and a copy of the usage agreement are available on the company web site * at :- http://www.wrldcomp.com . * * Dates are in Day - Month - Year format with the year in 2 digit ( 2000 to 2099 ) format . * * History : Date By Alteration \ Addition * * 01-01-10 Kim Lyon Version baseline date . Version 0.00 . Created - 2000 - 2010 . * *************************************************************************************************************************************************************************************************/ /* ========================================================================================= INCLUDES ========================================================================================= */ #include /* /usr/lib/libX11.a /usr/lib/libxcb.a /usr/lib/libXau.a /usr/lib/libXdmcp.a */ #include #include // prevents error for exit on line 18 when compiling with gcc /* System */ #include "System.hxx" // Application #include "Main.hxx" /* ======================================================================================== FUNCTIONS ========================================================================================= */ /* XFontStruct ----------- typedef struct { short lbearing; // origin to left edge of raster short rbearing; // origin to right edge of raster short width; // advance to next char's origin short ascent; // baseline to top edge of raster short descent; // baseline to bottom edge of raster unsigned short attributes; // per char flags (not predefined) } XCharStruct; typedef struct { Atom name; unsigned long card32; } XFontProp; typedef struct { // normal 16 bit characters are two bytes unsigned char byte1; unsigned char byte2; } XChar2b; typedef struct { XExtData *ext_data; // hook for extension to hang data Font fid; // Font id for this font unsigned direction; // hint about the direction font is painted unsigned min_char_or_byte2; // first character unsigned max_char_or_byte2; // last character unsigned min_byte1; // first row that exists unsigned max_byte1; // last row that exists Bool all_chars_exist; // flag if all characters have nonzero size unsigned default_char; // char to print for undefined character int n_properties; // how many properties there are XFontProp *properties; // pointer to array of additional properties XCharStruct min_bounds; // minimum bounds over all existing char XCharStruct max_bounds; // maximum bounds over all existing char XCharStruct *per_char; // first_char to last_char information int ascent; // logical extent above baseline for spacing int descent; // logical decent below baseline for spacing } XFontStruct; GC -- Value Mask Bits --------------- #define GCFunction (1L<<0) #define GCPlaneMask (1L<<1) #define GCForeground (1L<<2) #define GCBackground (1L<<3) #define GCLineWidth (1L<<4) #define GCLineStyle (1L<<5) #define GCCapStyle (1L<<6) #define GCJoinStyle (1L<<7) #define GCFillStyle (1L<<8) #define GCFillRule (1L<<9) #define GCTile (1L<<10) #define GCStipple (1L<<11) #define GCTileStipXOrigin (1L<<12) #define GCTileStipYOrigin (1L<<13) #define GCFont (1L<<14) #define GCSubwindowMode (1L<<15) #define GCGraphicsExposures (1L<<16) #define GCClipXOrigin (1L<<17) #define GCClipYOrigin (1L<<18) #define GCClipMask (1L<<19) #define GCDashOffset (1L<<20) #define GCDashList (1L<<21) #define GCArcMode (1L<<22) Values ------ typedef struct { int function; // logical operation unsigned long plane_mask; // plane mask unsigned long foreground; // foreground pixel unsigned long background; // background pixel int line_width; // line width (in pixels) int line_style; // LineSolid, LineOnOffDash, LineDoubleDash int cap_style; // CapNotLast, CapButt, CapRound, CapProjecting int join_style; // JoinMiter, JoinRound, JoinBevel int fill_style; // FillSolid, FillTiled, FillStippled FillOpaqueStippled int fill_rule; // EvenOddRule, WindingRule int arc_mode; // ArcChord, ArcPieSlice Pixmap tile; // tile pixmap for tiling operations Pixmap stipple; // stipple 1 plane pixmap for stippling int ts_x_origin; // offset for tile or stipple operations int ts_y_origin; Font font; // default text font for text operations int subwindow_mode; // ClipByChildren, IncludeInferiors Bool graphics_exposures; // boolean, should exposures be generated int clip_x_origin; // origin for clipping int clip_y_origin; Pixmap clip_mask; // bitmap clipping; other calls for rects int dash_offset; // patterned/dashed line information char dashes; } XGCValues; */ int main( void ) { Display* pstDisplay = NULL ; int iScreen ; Window windowId ; GC stGCDefault ; int iNoOfCurrentFontPaths = 0 ; char** ptsaCurrentFontPathList = NULL ; // char* ptsFontPath = "/usr/share/fonts/truetype/msttcorefonts" ; // int iNoOfFontPaths = 1 ; // char** ptsaFontPathList = { &ptsFontPath } ; XEvent stEvent ; XKeyEvent* pstKeyEvent = (XKeyEvent*)&stEvent ; KeySym tKeyChar ; KeySym tKeySymLC ; KeySym tKeySymUC ; char caMessage[ 200 ] ; int iCursor_Y = 0 ; int iFont ; XFontStruct* pstFontArial ; XGCValues stValuesFontArial ; GC stGCFontArial ; XFontStruct* pstFontCourier ; XGCValues stValuesFontCourier ; GC stGCFontCourier ; XFontStruct* pstFontGaramond ; XGCValues stValuesFontGaramond ; GC stGCFontGaramond ; int iNoOfNames ; int iOffset ; int iIndex ; int iStep ; char** ppcaFontNames ; BOOL bExit = FALSE ; memset( &stValuesFontArial , 0 , sizeof( stValuesFontArial ) ); memset( &stValuesFontCourier , 0 , sizeof( stValuesFontCourier ) ); memset( &stValuesFontGaramond , 0 , sizeof( stValuesFontGaramond ) ); if( !pstDisplay ) { // open connection with the server pstDisplay = XOpenDisplay( NULL ) ; if( pstDisplay ) { // get the default screen id. iScreen = DefaultScreen( pstDisplay ); // create the window windowId = XCreateSimpleWindow( pstDisplay , RootWindow( pstDisplay , iScreen ) , 10 , 10 , 800 , 640 , 3 , 0x000000 , 0xFFFFFF ); // windowId = XCreateSimpleWindow( pstDisplay , RootWindow( pstDisplay , iScreen ) , 10 , 10 , 800 , 640 , 1 , frame 0x000000 , background 0xFFFFFF ); // windowId = XCreateSimpleWindow( pstDisplay , RootWindow( pstDisplay , iScreen ) , 10 , 10 , 800 , 640 , 1 , BlackPixel( pstDisplay , iScreen ) , WhitePixel( pstDisplay , iScreen ) ); XStoreName( pstDisplay , windowId , "GUI Front End Module" ); // select the type of events to capture XSelectInput( pstDisplay , windowId , ExposureMask | KeyPressMask ); // map - show - the window XMapWindow( pstDisplay , windowId ); stGCDefault = DefaultGC( pstDisplay , iScreen ); stGCFontArial = stGCDefault ; stGCFontCourier = stGCDefault ; stGCFontGaramond = stGCDefault ; ptsaCurrentFontPathList = XGetFontPath( pstDisplay , &iNoOfCurrentFontPaths ); /* iNoOfFontPaths = iNoOfCurrentFontPaths + 1 ; ptsaFontPathList = (char**)malloc( iNoOfFontPaths * sizeof( char* ) ); for( iIndex = 0 ; iIndex < iNoOfCurrentFontPaths ; iIndex++ ) { ptsaFontPathList[ iIndex ] = ptsaCurrentFontPathList[ iIndex ] ; } ptsaFontPathList[ iNoOfCurrentFontPaths ] = ptsFontPath ; XFreeFontPath( ptsaCurrentFontPathList ); XSetFontPath( pstDisplay , ptsaCurrentFontPathList , iNoOfFontPaths - 1 ); */ // event loop while( !bExit ) { while( XPending( pstDisplay ) ) { XNextEvent( pstDisplay , &stEvent ); // draw or redraw the window if( stEvent.type == Expose ) { XFillRectangle( pstDisplay , windowId , stGCDefault , 20 , 20 , 10 , 10 ); XDrawString( pstDisplay , windowId , stGCDefault , 40 , 100 , "abc" , 3 ); XDrawLine( pstDisplay , windowId , stGCDefault , 50 , 135 , 80 , 185 ); XDrawRectangle( pstDisplay , windowId , stGCDefault , 80 , 200 , 50 , 75 ); XSetForeground( pstDisplay , stGCDefault , 0xFF0000 ); XSetBackground( pstDisplay , stGCDefault , 0x00FF00 ); ppcaFontNames = XListFonts( pstDisplay , "*" , 400 , &iNoOfNames ); iFont = 20 ; pstFontArial = XLoadQueryFont( pstDisplay , ppcaFontNames[ iFont ] ); if( !pstFontArial ) { XDrawString( pstDisplay , windowId , stGCDefault , 320 , 100 , "no arial" , 8 ); } else { stGCFontArial = XCreateGC( pstDisplay , windowId , 0 , &stValuesFontArial ); XSetForeground( pstDisplay , stGCFontArial , 0x0000FF ); XSetFont( pstDisplay , stGCFontArial , pstFontArial->fid ); sprintf( caMessage , "%d : %s" , iFont , ppcaFontNames[ iFont ] ); XDrawString( pstDisplay , windowId , stGCFontArial , 250 , 100 , caMessage , strlen( caMessage ) ); XFreeFont( pstDisplay , pstFontArial ); } iFont = 40 ; pstFontCourier = XLoadQueryFont( pstDisplay , ppcaFontNames[ iFont ] ); if( !pstFontCourier ) { XDrawString( pstDisplay , windowId , stGCDefault , 320 , 125 , "no courier" , 10 ); } else { stGCFontCourier = XCreateGC( pstDisplay , windowId , 0 , &stValuesFontCourier ); XSetForeground( pstDisplay , stGCFontCourier , 0x000F0F ); XSetFont( pstDisplay , stGCFontCourier , pstFontCourier->fid ); sprintf( caMessage , "%d : %s" , iFont , ppcaFontNames[ iFont ] ); XDrawString( pstDisplay , windowId , stGCFontCourier , 250 , 125 , caMessage , strlen( caMessage ) ); XFreeFont( pstDisplay , pstFontCourier ); } iFont = 60 ; pstFontGaramond = XLoadQueryFont( pstDisplay , ppcaFontNames[ iFont ] ); if( !pstFontGaramond ) { XDrawString( pstDisplay , windowId , stGCDefault , 320 , 150 , "no garamond" , 11 ); } else { stGCFontGaramond = XCreateGC( pstDisplay , windowId , 0 , &stValuesFontGaramond ); XSetForeground( pstDisplay , stGCFontGaramond , 0x00F00F ); XSetFont( pstDisplay , stGCFontGaramond , pstFontGaramond->fid ); sprintf( caMessage , "%d : %s" , iFont , ppcaFontNames[ iFont ] ); XDrawString( pstDisplay , windowId , stGCFontGaramond , 250 , 150 , caMessage , strlen( caMessage ) ); XFreeFont( pstDisplay , pstFontGaramond ); } iCursor_Y = 175 ; sprintf( caMessage , "Font Paths : %d" , iNoOfCurrentFontPaths ); XDrawString( pstDisplay , windowId , stGCDefault , 20 , iCursor_Y , caMessage , strlen( caMessage ) ); iCursor_Y += 25 ; for( iIndex = 0 ; iIndex < iNoOfCurrentFontPaths ; iIndex += 1 , iCursor_Y += 20 ) { XDrawString( pstDisplay , windowId , stGCDefault , 20 , iCursor_Y , ptsaCurrentFontPathList[ iIndex ] , strlen( ptsaCurrentFontPathList[ iIndex ] ) ); } // ppcaFontNames = XListFonts( pstDisplay , "*" , 400 , &iNoOfNames ); if( ppcaFontNames ) { sprintf( caMessage , "Font Names : %d" , iNoOfNames ); XDrawString( pstDisplay , windowId , stGCDefault , 20 , iCursor_Y , caMessage , strlen( caMessage ) ); iCursor_Y += 25 ; iStep = iNoOfNames / 20 ; iNoOfNames = 20 ; iOffset = 0 ; iStep = 1 ; for( iIndex = 0 ; iIndex < iNoOfNames ; iIndex += iStep , iCursor_Y += 20 ) { XDrawString( pstDisplay , windowId , stGCDefault , 20 , iCursor_Y , ppcaFontNames[ iOffset + iIndex ] , strlen( ppcaFontNames[ iOffset + iIndex ] ) ); } XFreeFontNames( ppcaFontNames ); } iCursor_Y = 50 ; }// if( stEvent.type == Expose ) // sprintf( caMessage , "stEvent.type = %X " , stEvent.type ); // XDrawString( pstDisplay , windowId , stGCDefault , 10 , 50 + iCursor_Y , caMessage , strlen( caMessage ) ); // iCursor_Y += 20 ; // exit on key press if( stEvent.type == KeyPress ) { tKeySymLC = XKeycodeToKeysym( pstDisplay , pstKeyEvent->keycode , 0 ); tKeySymUC = XKeycodeToKeysym( pstDisplay , pstKeyEvent->keycode , 1 ); if( !( pstKeyEvent->state & 0x02 ) ) { if( !( pstKeyEvent->state & 0x01 ) ) { tKeyChar = tKeySymLC ; } else { tKeyChar = tKeySymUC ; } }// if( !( pstKeyEvent->state & 0x02 ) ) else { if( !( pstKeyEvent->state & 0x01 ) ) { tKeyChar = tKeySymUC ; } else { tKeyChar = tKeySymLC ; } }// else ( !( pstKeyEvent->state & 0x02 ) ) sprintf( caMessage , "pstKeyEvent->state = %4.4X , pstKeyEvent->keycode = %4.4X , tKeySym = %4.4X %4.4X , tKeyChar = %4.4X" , pstKeyEvent->state , pstKeyEvent->keycode , (int)tKeySymUC , (int)tKeySymLC , (int)tKeyChar ); XDrawString( pstDisplay , windowId , stGCDefault , 10 , 50 + iCursor_Y , caMessage , strlen( caMessage ) ); iCursor_Y += 20 ; if( pstKeyEvent->keycode == 0x1B ) { bExit = TRUE ; break ; }// if( pstKeyEvent->keycode == 0x1B ) }// if( stEvent.type == KeyPress ) }// while( XPending( pstDisplay ) ) }// while( TRUE ) // XSetFontPath( pstDisplay , NULL , 0 ); XFreeFontPath( ptsaCurrentFontPathList ); XDestroyWindow( pstDisplay , windowId ); XCloseDisplay( pstDisplay ); }// if( pstDisplay ) }// if( !pstDisplay ) return 0 ; }