/*================================================================== ================================================================== == XMusic -- An Interactive Interface to Csound == == Copyright (C) 1988 by George D. Drapeau == == All Rights Reserved == ================================================================== ================================================================== */ /* $Log: connect.c,v $ * Revision 1.3 89/08/06 17:58:28 drapeau * Cleanedup the code for first X11 release. * */ #include #include #include #include #include #define USEBITMAPS /* This is so I can use the "sine64_width" value */ #include "defs.h" #include "externs.h" ConnectTools() { Window rootReturn,childReturn; XEvent event; Tool *tool1, *tool2, *GetToolFromCoords(); int x1,y1, x2,y2, whichSide; int rootX,rootY; unsigned int maskReturn; Bool returnVal; returnVal = XQueryPointer(dpy,musicWin, &rootReturn,&childReturn, &rootX,&rootY, &x1,&y1, &maskReturn); if ((tool1 = GetToolFromCoords(x1,y1)) == NULL) { printf("Not pointing to any tool.\n"); XUngrabPointer(dpy,CurrentTime); return; } XGrabPointer(dpy,musicWin,False,ButtonPressMask, GrabModeAsync,GrabModeAsync, None,tCursor,CurrentTime); XNextEvent(dpy,&event); returnVal = XQueryPointer(dpy,musicWin, &rootReturn,&childReturn, &rootX,&rootY, &x2,&y2, &maskReturn); if ((tool2 = GetToolFromCoords(x2,y2)) == NULL) { printf("Not pointing to any tool.\n"); XUngrabPointer(dpy,CurrentTime); return; } XUngrabPointer(dpy,CurrentTime); if ((tool1->y > tool2->y) && /* Is the first tool underneath the second, and is... */ (tool1->type == SineTool)) /* ...the underneath tool a SineTool? */ { /* Yes, this means a SineTool's input is being used. */ if (x1 < (tool1->x - (sine64_width/6))) /* Determine which side the user wants to connect with */ whichSide = AmpSide; /* Side is one of three choices: AmpSide, FreqSide,... */ else if (x1 > (tool1->x + (sine64_width/6))) /* ...or Middle */ whichSide = FreqSide; else whichSide = Middle; ConnectSineTool(tool2,tool1,whichSide); /* Connect the tools (tool2 is output, tool1 input) */ } else if ((tool2->y > tool1->y) && /* Is the 2nd tool below the 1st, and is the tool... */ (tool2->type == SineTool)) /* ...below a SineTool? */ { /* Yes, then tool2 is SineTool */ if (x2 < (tool2->x - (sine64_width/6))) /* Determine which side the user wants to connect with */ whichSide = AmpSide; /* Side is one of three choices: AmpSide, FreqSide,... */ else if (x2 > (tool2->x + (sine64_width/6))) /* ...or Middle */ whichSide = FreqSide; else whichSide = Middle; ConnectSineTool(tool1,tool2,whichSide); /* Connect the tools (tool1 is output, tool2 input) */ } else /* We're not trying to connect to the input of a... */ CheckToolConnection(tool1,tool2); /* ...SineTool, so do a normal tool connection. */ } /* end function ConnectTools */ DisconnectTools() { Window rootReturn,childReturn; XEvent event; Tool *tool1, *tool2, *inputTool, *outputTool, *GetToolFromCoords(); int x,y,whichSide; int rootX,rootY; unsigned int maskReturn; Bool returnVal; returnVal = XQueryPointer(dpy,musicWin, &rootReturn,&childReturn, &rootX,&rootY, &x,&y, &maskReturn); if ((tool1 = GetToolFromCoords(x,y)) == NULL) { printf("Not pointing to any tool.\n"); XUngrabPointer(dpy,CurrentTime); return; } XGrabPointer(dpy,musicWin,False,ButtonPressMask, GrabModeAsync,GrabModeAsync, None,tCursor,CurrentTime); XNextEvent(dpy,&event); returnVal = XQueryPointer(dpy,musicWin, &rootReturn,&childReturn, &rootX,&rootY, &x,&y, &maskReturn); if ((tool2 = GetToolFromCoords(x,y)) == NULL) { printf("Not pointing to any tool.\n"); XUngrabPointer(dpy,CurrentTime); return; } XUngrabPointer(dpy,CurrentTime); if (tool1->y < tool2->y) /* Is the first tool above the 2nd in the diagram? */ { outputTool = tool1; /* Yes, 1st tool is top and is the 'output' tool */ inputTool = tool2; /* 2nd tool is below and receives input from 1st */ } else /* No, do the reverse of the above, that is,... */ { outputTool = tool2; /* 2nd tool is above and is 'output' tool */ inputTool = tool1; /* 1st tool is below and receives input from 2nd */ } if ((outputTool->output != inputTool) && /* Are the two tools connected? i.e., is output of one... */ (inputTool->input1 != outputTool) && /* ...connected to the input of the other? */ (inputTool->input2 != outputTool) && (inputTool->input3 != outputTool) && (inputTool->input4 != outputTool) && (inputTool->input5 != outputTool) && (inputTool->input6 != outputTool) && (inputTool->input7 != outputTool) && (inputTool->input8 != outputTool)) { printf("Those two tools are not connected; nothing will be disconnected.\n"); return; } if (inputTool->input1 == outputTool) /* Yes, they're connected, which input is the one... */ inputTool->input1 = NULL; /* ...to disconnect? Input1,2, ...,8? */ else if (inputTool->input2 == outputTool) /* Disconnect the appropriate input connection */ inputTool->input2 = NULL; else if (inputTool->input3 == outputTool) inputTool->input3 = NULL; else if (inputTool->input4 == outputTool) inputTool->input4 = NULL; else if (inputTool->input5 == outputTool) inputTool->input5 = NULL; else if (inputTool->input6 == outputTool) inputTool->input6 = NULL; else if (inputTool->input7 == outputTool) inputTool->input7 = NULL; else if (inputTool->input8 == outputTool) inputTool->input8 = NULL; outputTool->output = NULL; /* Disconnect the output connection */ changesMade = 1; /* Signal that changes were made to the diagram */ DrawMusicWin(); /* Redraw the Music window */ } /* end function DisconnectTools */ CheckToolConnection(tool1,tool2) /* Function checks if the two tools passed as... */ Tool *tool1, *tool2; /* ...args are suitable for linking to each other */ { Tool *inputTool, *outputTool; if (tool1 == tool2) /* Did user try to connect a tool to itself? */ { printf("Sorry, a tool cannot be connected to itself, except through feedback.\n"); return; } if (tool1->y < tool2->y) /* Is the first tool above the 2nd in the diagram? */ { outputTool = tool1; /* Yes, 1st tool is top and is the 'output' tool */ inputTool = tool2; /* 2nd tool is below and receives input from 1st */ } else /* No, do the reverse of the above, that is,... */ { outputTool = tool2; /* 2nd tool is above and is 'output' tool */ inputTool = tool1; /* 1st tool is below and receives input from 2nd */ } if (outputTool->output !=NULL) /* Is the output pointer of this tool being used? */ { printf("Sorry, Output is already being used.\n"); /* Yes, outputs can only be used once, so report this... */ return; /* ...to the user and exit this function */ } if (inputTool->type == ParamTool) /* Is the user trying to provide an input to a ParamTool? */ { /* Yes, this is illegal; report the error, exit function */ printf("Sorry, parameters cannot take input -- they can only produce output.\n"); return; } if ((inputTool->input1) && (inputTool->input2) && /* Are all inputs to this tool being used? */ (inputTool->input3) && (inputTool->input4) && (inputTool->input5) && (inputTool->input6) && (inputTool->input7) && (inputTool->input8)) { printf("Sorry, all inputs are already being used.\n"); /* Yes, report this to the user & exit the function */ return; } outputTool->output = inputTool; /* Connect the output of one tool to input of the other */ if (inputTool->input1 == NULL) /* Has the first of this tool's inputs been used? */ inputTool->input1 = outputTool; /* No, use it to connect to the output of the other tool */ else if (inputTool->input2 == NULL) /* Yes, keep checking for the first available input... */ inputTool->input2 = outputTool; /* ...and connect it to the output tool when found */ else if (inputTool->input3 == NULL) inputTool->input3 = outputTool; else if (inputTool->input4 == NULL) inputTool->input4 = outputTool; else if (inputTool->input5 == NULL) inputTool->input5 = outputTool; else if (inputTool->input6 == NULL) inputTool->input6 = outputTool; else if (inputTool->input7 == NULL) inputTool->input7 = outputTool; else if (inputTool->input8 == NULL) inputTool->input8 = outputTool; changesMade = 1; /* Set flag saying that changes were made to the diagram */ DrawToolConnection(inputTool); /* Draw a line connecting the two tools */ } /* end function CheckToolConnection */ ConnectSineTool(outputTool,inputTool,whichSide) Tool *outputTool, *inputTool; int whichSide; { Tool *tPtr; if (outputTool == inputTool) /* Did user try to connect a tool to itself? */ { printf("Sorry, a tool cannot be connected to itself, except through feedback.\n"); return; } if (outputTool->output !=NULL) /* Is the output pointer of this tool being used? */ { printf("Sorry, Output is already being used.\n"); /* Yes, outputs can only be used once, so report this... */ return; /* ...to the user and exit this function */ } if (whichSide == AmpSide) /* Decide which input we're trying to connect with */ tPtr = inputTool->input1; /* Amplitude input */ else if (whichSide == FreqSide) /* Frequency input */ tPtr = inputTool->input2; else if (inputTool->input3 == NULL) /* Keep checking until the correct input is found */ tPtr = inputTool->input3; else if (inputTool->input4 == NULL) tPtr = inputTool->input4; else if (inputTool->input5 == NULL) tPtr = inputTool->input5; else if (inputTool->input6 == NULL) tPtr = inputTool->input6; else if (inputTool->input7 == NULL) tPtr = inputTool->input7; else if (inputTool->input8 == NULL) tPtr = inputTool->input8; if (tPtr != NULL) /* Is the input already being used? */ { printf("Sorry, that input is already being used.\n"); /* Yes, report the error and exit this function */ return; } /* end if tPtr... */ outputTool->output = inputTool; /* Connect the output tool */ if (whichSide == AmpSide) /* Determine which input to use */ inputTool->input1 = outputTool; /* Connect the Amp input to the output tool */ else if (whichSide == FreqSide) /* Connect the Freq input to the output tool */ inputTool->input2 = outputTool; else if (tPtr == inputTool->input3) /* Find the correct input to connect with */ inputTool->input3 = outputTool; else if (tPtr == inputTool->input4) inputTool->input4 = outputTool; else if (tPtr == inputTool->input5) inputTool->input5 = outputTool; else if (tPtr == inputTool->input6) inputTool->input7 = outputTool; else if (tPtr == inputTool->input7) inputTool->input7 = outputTool; else if (tPtr == inputTool->input8) inputTool->input8 = outputTool; changesMade = 1; /* Set flag saying that changes were made to the diagram */ DrawToolConnection(inputTool); /* Draw a line connecting the two tools */ } /* end function ConnectSineTool */