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/* PlotController.m -- Implementation file for the PlotController class */
#import "PlotController.h"
#import "PlotView.h"
#import <appkit/Application.h>
#import <appkit/Listener.h>
#import <appkit/Pasteboard.h>
#import <appkit/Window.h>
#import <appkit/ScrollView.h>
#import <appkit/Text.h>
#import <stdlib.h>
#import <string.h>
#include <mach.h>
@implementation PlotController
- appDidInit:sender
/*
* Responds to a message that's sent just before the application
* gets the first event. PlotController initializes its inputText
* instance variable. It makes itself the inputText's delegate and
* the services delegate for the application. It also ensures that
* the application's single window becomes the key window.
*/
{
inputText = [theScrollView docView];
[inputText setDelegate:self];
[[NXApp appListener] setServicesDelegate:self];
[[thePlotView window] makeKeyAndOrderFront:self];
return self;
}
- textDidGetKeys:theText isEmpty:(BOOL)flag
/*
* Responds to a message the Text object sends when its text changes.
* PlotController causes the PlotView to clear itself when the text changes.
*/
{
return [thePlotView clear:self];
}
- requestPlot:(id)pasteboard userData:(const char *)userData error: (char **)msg
/*
* Responds to a request from another application for the plotting service.
* PlotController copies the data from the supplied pasteboard into the Text object
* and then sends a plot: message to the PlotView.
*/
{
char *data, *scratch;
int length;
[NXApp activateSelf:NO];
[pasteboard types];
if ([pasteboard readType:NXAsciiPboardType data:&data length:&length]) {
if(scratch = malloc(length+1)) {
strncpy(scratch, data, length);
scratch[length]='\0';
[[inputText selectAll:self] replaceSel:scratch];
free(scratch);
}
vm_deallocate(task_self(), (vm_address_t)data, (vm_size_t)length);
[thePlotView plot:self];
}
return self;
}
- plotView:sender providePoints:(NXStream **)stream
/*
* Responds to a message the PlotView sends requesting the points to plot.
* PlotController responds by giving the PlotView access to the Text
* object's stream.
*/
{
*stream = [inputText stream];
return self;
}
- plotView:sender pointDidChange:(NXPoint *)aPoint
/*
* Responds to a message the PlotView sends notifying its delegate
* that a point has been added. PlotController responds by adding the point to
* the end of the list in the Text object.
*/
{
int endPos;
char buffer[100];
sprintf(buffer, "%d, %d\n", (int)aPoint->x, (int)aPoint->y);
endPos = [inputText byteLength];
[inputText setSel:endPos :endPos];
[inputText scrollSelToVisible];
[inputText replaceSel:buffer];
return self;
}
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.