#if !defined(lint) && !defined(DOS) static char rcsid[] = "$Id: mouse.c 769 2007-10-24 00:15:40Z hubert@u.washington.edu $"; #endif /* * ======================================================================== * Copyright 2006-2007 University of Washington * Copyright 2013-2019 Eduardo Chappa * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * ======================================================================== */ #include #include #include "../headers.h" #include "getkey.h" #ifdef _WINDOWS #include "mswin.h" #endif #include "mouse.h" #ifdef MOUSE #ifndef _WINDOWS /* useful definitions */ #define XTERM_MOUSE_ON "\033[?1000h" /* DECSET with parm 1000 */ #define XTERM_MOUSE_OFF "\033[?1000l" /* DECRST with parm 1000 */ /* useful declarations */ static int mexist = 0; /* is the mouse driver installed? */ static unsigned mnoop; /* internal prototypes */ void mouseon(void); void mouseoff(void); /* * init_mouse - check for xterm and initialize mouse tracking if present... */ int init_mouse(void) { if(mexist) return(TRUE); if(getenv("DISPLAY")){ mouseon(); kpinsert("\033[M", KEY_XTERM_MOUSE, 1); return(mexist = TRUE); } else return(FALSE); } /* * end_mouse - clear xterm mouse tracking if present... */ void end_mouse(void) { if(mexist){ mexist = 0; /* just see if it exists here. */ mouseoff(); } } /* * mouseexist - function to let outsiders know if mouse is turned on * or not. */ int mouseexist(void) { return(mexist); } /* * mouseon - call made available for programs calling pico to turn ON the * mouse cursor. */ void mouseon(void) { fputs(XTERM_MOUSE_ON, stdout); } /* * mouseon - call made available for programs calling pico to turn OFF the * mouse cursor. */ void mouseoff(void) { fputs(XTERM_MOUSE_OFF, stdout); } /* * checkmouse - look for mouse events in key menu and return * appropriate value. */ int checkmouse(unsigned long *ch, int down, int mcol, int mrow) { static int oindex; int i = 0, rv = 0; MENUITEM *mp; if(!mexist || mcol < 0 || mrow < 0) return(FALSE); if(down) /* button down */ oindex = -1; for(mp = mfunc; mp; mp = mp->next) if(mp->action && M_ACTIVE(mrow, mcol, mp)) break; if(mp){ unsigned long r; r = (*mp->action)(down ? M_EVENT_DOWN : M_EVENT_UP, mrow, mcol, M_BUTTON_LEFT, 0); if(r){ *ch = r; rv = TRUE; } } else{ while(1){ /* see if we understand event */ if(i >= 12){ i = -1; break; } if(M_ACTIVE(mrow, mcol, &menuitems[i])) break; i++; } if(down){ /* button down */ oindex = i; /* remember where */ if(i != -1 && menuitems[i].label_hiliter != NULL && menuitems[i].val != mnoop) /* invert label */ (*menuitems[i].label_hiliter)(1, &menuitems[i]); } else{ /* button up */ if(oindex != -1){ if(i == oindex){ *ch = menuitems[i].val; rv = TRUE; } } } } /* restore label */ if(!down && oindex != -1 && menuitems[oindex].label_hiliter != NULL && menuitems[oindex].val != mnoop) (*menuitems[oindex].label_hiliter)(0, &menuitems[oindex]); return(rv); } /* * invert_label - highlight the label of the given menu item. */ void invert_label(int state, MENUITEM *m) { unsigned i, j; int col_offset, savettrow, savettcol; char *lp; get_cursor(&savettrow, &savettcol); /* * Leave the command name bold */ col_offset = (state || !(lp=strchr(m->label, ' '))) ? 0 : (lp - m->label); movecursor((int)m->tl.r, (int)m->tl.c + col_offset); flip_inv(state); for(i = m->tl.r; i <= m->br.r; i++) for(j = m->tl.c + col_offset; j <= m->br.c; j++) if(i == m->lbl.r && j == m->lbl.c + col_offset && m->label){ lp = m->label + col_offset; /* show label?? */ while(*lp && j++ < m->br.c) putc(*lp++, stdout); continue; } else putc(' ', stdout); if(state) flip_inv(FALSE); movecursor(savettrow, savettcol); } #else /* _WINDOWS */ #define MOUSE_BUTTONS 3 static int mexist = 0; /* is the mouse driver installed? */ static int nbuttons; /* number of buttons on the mouse */ static unsigned mnoop; /* * init_mouse - check for and initialize mouse driver... */ int init_mouse(void) { nbuttons = MOUSE_BUTTONS; return (mexist = TRUE); /* Mouse always exists under windows */ } /* * end_mouse - a no-op on Windows */ void end_mouse(void) { } /* * mouseexist - function to let outsiders know if mouse is turned on * or not. */ int mouseexist(void) { return(mexist); } /* * checkmouse - Check mouse and return mapped command. * * EXPORTED to pico. * NOTE: "down", "xxx", and "yyy" aren't used under windows. */ int checkmouse (unsigned long *ch, int ddd, int xxx, int yyy) { static int oindex; /* Index of previous mouse down. */ int mcol; /* current mouse column */ int mrow; /* current mouse row */ unsigned long r; int rv = 0; /* TRUE when we have something to return. */ MEvent mouse; int i = 0; MENUITEM *mp; *ch = 0; /* Mouse installed? */ if (!mexist) return (FALSE); if (!mswin_getmouseevent (&mouse)) return (FALSE); /* Location of mouse event. */ mcol = mouse.nColumn; mrow = mouse.nRow; /* * If there is a tracking function it gets all the mouse events * regardless of where they occur. */ if (mtrack != NULL) { r = mtrack (mouse.event, mrow, mcol, mouse.button, mouse.keys); if (r & 0xffff){ *ch = r; rv = TRUE; } return (rv); } /* Mouse down or up? */ if (mouse.event == M_EVENT_DOWN) { /* button down */ oindex = -1; /* No Previous mouse down. */ } /* In special screen region? */ for(mp = mfunc; mp; mp = mp->next) if(mp->action && M_ACTIVE(mrow, mcol, mp)) break; if(mp){ r = (*mp->action)(mouse.event, mrow, mcol, mouse.button, mouse.keys); if (r){ *ch = r; rv = TRUE; } } else if(mouse.button == M_BUTTON_LEFT){ /* In any of the menuitems? */ while(1){ /* see if we understand event */ if(i >= 12){ i = -1; /* Not Found. */ break; } if(M_ACTIVE(mrow, mcol, &menuitems[i])) break; /* Found. */ i++; /* Next. */ } /* Now, was that a mouse down or mouse up? */ if (mouse.event == M_EVENT_DOWN) { /* button down */ oindex = i; /* remember where */ if(i != -1){ /* invert label */ if(menuitems[i].label_hiliter != NULL) (*menuitems[i].label_hiliter)(1, &menuitems[i]); else invert_label(1, &menuitems[i]); } } else if (mouse.event == M_EVENT_UP) {/* button up */ if (oindex != -1) { /* If up in menu item. */ if (i == oindex){ /* And same item down in. */ *ch = menuitems[i].val; /* Return menu character. */ rv = 1; } } } } else if(mouse.button == M_BUTTON_RIGHT){ if (mouse.event == M_EVENT_UP) { mswin_keymenu_popup(); } } /* If this is mouse up AND there was a mouse down in a menu item * then uninvert that menu item */ if(mouse.event == M_EVENT_UP && oindex != -1){ if(menuitems[oindex].label_hiliter != NULL) (*menuitems[oindex].label_hiliter)(0, &menuitems[oindex]); else invert_label(0, &menuitems[oindex]); } return(rv); } /* * invert_label - highlight the label of the given menu item. */ void invert_label(int state, MENUITEM *m) { int r, c; unsigned i, j; char *lp; int old_state; int wasShown; int col_offset; COLOR_PAIR *lastc = NULL; if(m->val == mnoop) return; mswin_getpos (&r, &c); /* get cursor position */ wasShown = mswin_showcaret (0); old_state = mswin_getrevstate (); /* * Leave the command name bold */ col_offset = (state || !(lp=strchr(m->label, ' '))) ? 0 : (lp - m->label); (*term.t_move)(m->tl.r, m->tl.c + col_offset); if(state && m->kncp) lastc = pico_set_colorp(m->kncp, PSC_REV|PSC_RET); else if(!state && m->klcp) lastc = pico_set_colorp(m->klcp, PSC_NORM|PSC_RET); else (*term.t_rev)(state); for(i = m->tl.r; i <= m->br.r; i++) { for(j = m->tl.c + col_offset; j <= m->br.c; j++) { if(i == m->lbl.r && j == m->lbl.c + col_offset){ /* show label?? */ lp = m->label + col_offset; while(*lp && j++ < m->br.c) (*term.t_putchar)(*lp++); continue; } else (*term.t_putchar)(' '); } } if(lastc){ (void)pico_set_colorp(lastc, PSC_NONE); free_color_pair(&lastc); } else (*term.t_rev)(old_state); mswin_move (r, c); mswin_showcaret (wasShown); } #endif /* _WINDOWS */ #endif /* MOUSE */