<p>//caption_resize041106.cctmp: - RJL041106 - (approx 25+125+90=150lines) //Functions: caption_resize, do_caption_resize{_begin,_move,_end} // #define abbrevs for states, events, predicates; 3 actions now are function calls // New 041106: more abbrevs,macros; merged similar guard/action/next-state triples // Some incomplete actions identified and completed when merged. // Some comments and dprint calls removed #define cs currentselection #define sc selected_caption #define SCR SCaptionResize #define SCCR SCaptionConfirmResize #define BD BUTTON_DOWN_EVENT #define BM BUTTON_MOVED_EVENT #define BU BUTTON_UP_EVENT #define ccc changeCanvasCursor #define csHasTypeCG (hasType((id=(hcg_key)cs->getid()),CG)) #define SCRBUG1 ((cs!= 0) && csHasTypeCG) #define SCCRBDG1 (sc!=0 && cs==sc && csHasTypeCG) #define SCCRBDG2 (sc!=0 && (cs==0 || !csHasTypeCG)) #define SCCRBDG3 (sc!=0 && cs!=0 && cs!=sc && csHasTypeCG ) #define SCCRBDA1 do_caption_resize_begin() #define SCCRBMA1 do_caption_resize((int)event->x, (int)event->y); #define SCCRBUA4 do_caption_resize_end() static hcg_key id; // added static - RJL041029 static float savedx, savedy; float sx, sy; //char *curr_shape[20]; float center_x, center_y, radius; float temp_x, temp_y, tempr; /*, temp_radius*/; float diff_x, diff_y; static graphobject *sc = NULL; static graphobject *cs = NULL; void caption_resize ( XButtonEvent *even, int state, /* Canvas State */ caption_attributes *attribute, int button_op) /* BUTTON_UP, BUTTON_DOWN,BUTTON_MOVED */ { EP; switch (state) // states: SCR=102, SCCR=103 { case SCR: //%%SCR DP;dprintdd("case SCR:SCR = %x; ==? state = %x\n", SCR, state); assert(state == SCR); switch (button_op) { case BD: //%%SCRBDA1 DP; reselect(event, &sx, &sy);//530:new curr..sel- RJL041028 break; // wait for BUTTON_UP case BM: //%%SCRBMA1:no-op DP;break; case BU://%%SCRBU if (SCRBUG1) { //%%SCRBUG1/A1 -line540: not reached 041029 -RJL DP;sc = cs;//540:got here selected.changeAttribState( SCCR);//change-State ccc(movehand); DP;break;//Never reached here! RJL041029.0045 } //end %%SCRBUA1 else { DP;break; // %%SCRBUA2: no-op, same state - retry } default: PostErrorMsg(SCR); DP;break; }; // end sw button_op break; // added 041029 - this bug took hours to find! // end %%SCR - case SCR case SCCR: //%%SCCR DP;dprintdd( /* 558:*/ "[case SCCR:SCCR = %x; ==?, state = %x]\n", SCCR, state); assert(state==SCCR);//SCCR:561: switch (button_op) { case BD: //%%SCCRBD DP; if (SCCRBDG1) { //%%SCCRBDG1:selection confirmed;begin resize DP; SCCRBDA1; //do_caption_resize_begin(); //%%SCCRBDA1 break; //else old selection not confirmed; may be new CG else if (SCCRBDG2) { //%%SCCRBDA2 DP; unselect(); sc = 0; // RJL041028 ccc(arrow); displayMessage("Invalid selection; select a Caption\n"); selected.changeAttribState(SCR); break;//%%end SCCRBDA2 } else { //%%SCCRBDG3: curr_sel != 0 && new && hasType(id, CG) DP; displayMessage( "SCCR: new Caption;must re-confirm\n"); sc = cs; //RJL041024 break; //%%end SCCRBDA3 } // end else (new CG saved in sc) //%%end SCCRBD (BUTTON_DOWN) case BM: //%%SCCRBM DP; //%%SCCRBMA1 do_caption_resize((int)event->x, (int)event->y);//xorGC break; //end %%SCCRBMA1 case BU://%%SCCRBU if (SCCRBUG1orG3) //%%((!sc||!cs)||(sc && cs && !csHasTypeCG )) { //%%SCCRBUA1=A3 DP;ccc(arrow); sc = cs = 0; selected.changeAttribState(SCR); break; } //end %%SCCRBUG1A1, %%SCCRBUG3A3</p><p> else { //%%SCCRBUG4 : cs!=0 && csHasTypeCG //if (cs != 0 && csHasTypeCG ) do_caption_resize_end(); DP;break; }//end %%SCCRBUA4 // end %%SCCRBU - BU in SCCR default: /* illegal value for button_op variable */ fprintf(stderr, "Out of State in function caption_resize.\n"); fprintf(stderr,"switch on state\n"); fprintf(stderr,"Report this to Professor Lechner.\n"); DP;break; }//end switch(button_op) // end %%SCCR = case SCCR default: DP;assert(0); } // end switch(state) } // end caption_resize ///////////////////////////////////////////////////// //do_caption_resize_begin was case block SCCRBDA1, made a function - RJL041105 ///////////////////////////////////////////////// void do_caption_resize_begin(void) //%%SCCRBDA1 { float curr_x,curr_y, center_x,center_y; float temp_x,temp_y, diff_x,diff_y; hcg_key id; // local non-static? CGcurr = (struct CG*)cs->getcurr(); selectedx = sx; selectedy = sy; savedx = cs->getcenterx(); savedy = cs->getcentery(); displayMessage("Drag the mouse button to resize\n"); center_x = cs->getcenterx(); center_y = cs->getcentery(); radius = cs->getradius(); last_width = cs->getwidth(); //initialize for do_caption_resize_move last_height = cs->getheight(); return; } // end do_caption_resize_begin - exit if selection reconfirmed; //First try: call cs->Draw - but need to use moverect not drawrect /*************************************************************************** * Name: do_caption_resize_move * Description: * This routine resizes a graph caption box on the drawing canvas * Client: caption_resize * Inputs: * x (int): new x coordinate location of button move * y (int): new y coordinate location of button move * Outputs: NONE * Returns: * none * Client: state SCCR, in event BUTTON_MOVED * pre-condition: cs != 0 and hasType(id, CG) * ***************************************************************************/ void do_caption_resize_move(int x, int y) { float curr_x,curr_y, center_x,center_y; float temp_x,temp_y, diff_x,diff_y; hcg_key tmpid; // local non-static? assert(cs != 0); tmpid = (hcg_key)cs->getid(); if (!hasType(tmpid, CG)) return; CGcurr = (struct CG*) cs->getcurr(); assert (CGcurr != NULL); assert(CGcurr->CGid == tmpid); /* RJL 040328 */ curr_x = (float)x; //new mouse pos curr_y = (float)y; temp_x = cs->getcenterx();//old center temp_y = cs->getcentery(); center_x = cs->getcenterx();//old center center_y = cs->getcentery(); redrawrectangular( center_x, center_y, last_width*2.0, last_height*2.0); // init in client? last_width = new_width = diff_x = fabs(curr_x - temp_x); last_height = new_width = diff_y = fabs(curr_y - temp_y); redrawrectangular(center_x,center_y, new_width*2.0, new_height*2.0);// repeat; return; } // end do_caption_resize_move (client: BUTTON_MOVED in SCCaptionConfirmResize ///////////////////////////////////////////////////// //do_caption_resize_end was case block SCCRBUA4, now a function - RJL041105 ///////////////////////////////////////////////// void do_caption_resize_end(void) //%%SCCRBUA4 { center_x = cs->getcenterx(); center_y = cs->getcentery(); temp_x = event->x;//no need if assert succeeds temp_y = event->y; diff_x = fabs(temp_x - center_x); diff_y = fabs(temp_y - center_y); tempr = (diff_x>diff_y)?diff_x:diff_y; //(radius = max) cs->setradius(tempr,tempr);</p><p>ReDraw();//On exit, redraw entire diagram? RJL041022</p><p>} //end do_caption_resize_end</p>