Hi all I wonder if anyone can help me solve this small issue I'm having. I have set up a piece of code which transfers a scanned document to a folder. I would like for this file to exist only for the duration of time that the program is open for. After the program shuts, I would like to delete this file. It is only temporary. I'd like to introduce some conditionals to the part of the code which reads:

File f1 = new File("C:/Users/arthur prior/Desktop/OUTPUT/" + "%TEMP%PRESCAN" + "." + FILETYPE.captionLabel());

something like

if "the program has closed" {

}

In a way it is a chicken and egg situation, because if the program has terminated then it will not be able to fulfil my request to delete the file...

Any help would be greatly appreciated! Regards, Arthur

2.         ImageIO.write(bimg, filetype , new File ("C:/Users/arthur prior/Desktop/OUTPUT/" + "%TEMP%PRESCAN" + "." + FILETYPE.captionLabel()));
3.         
4.     class MyCanvas extends ControlWindowCanvas {
5.     public void draw(PApplet theApplet) {
6.     PImage OUTPUT = loadImageIO("C:/Users/arthur prior/Desktop/OUTPUT/" + "%TEMP%PRESCAN" + "." + FILETYPE.captionLabel());
7.     
8.     theApplet.image(OUTPUT,0,0);
9.     OUTPUT.resize(512,731);
10.     theApplet.image(OUTPUT,0,0);
11.     File f1 = new File("C:/Users/arthur prior/Desktop/OUTPUT/" + "%TEMP%PRESCAN" + "." + FILETYPE.captionLabel());
12.     f1.delete();
13.     }
14.     }
15. controlWindow.addCanvas(new MyCanvas()); 
16. controlWindow.show(); 

Hi all I wonder if anyone can help me. I am writing a program which interfaces with a scanner. I would like to have a secondary window which displays the images as they are scanned. I am using the control p5 library, specifically, the pApplet as a secondary window. the trouble I'm having is that the pApplet stuff is setup right before Void Setup. That's all very well, but I have asked "theApplet" to load up an image using variables which are yet to be established. for example the file name and file extension are given by a textfield. Is there a simpler method of going about what I am trying to achieve or can I pull it off this way?

2. // controlWindowCanvas class
3. class MyCanvas extends ControlWindowCanvas {
4. public PImage P;
5. public MyCanvas() {
6. P = loadImage("C:/Users/arthur prior/Desktop/OUTPUT/" +MARGINmyTextfield.getText()  + "." + FILETYPE.captionLabel());
7. }
8. public void draw(PApplet theApplet) {
9. theApplet.image(P,0,0);
10. }
11. }
12. 
    

I'll also post the whole code so you can see what's going on elsehwhere...

2. import processing.opengl.*;
3. 
   
4. import javax.imageio.ImageIO;
5. import java.awt.Toolkit;
6. import java.awt.image.BufferedImage;
7. 
   
8. import processing.serial.*;
9. import controlP5.*;
10. ControlP5 controlP5;
11. Serial port;
12. Textfield MARGINmyTextfield;
13. ListBox RESOLUTION;
14. ListBox FILETYPE;
15. ControlWindow controlWindow;
16. ControlWindowCanvas cc;
17. 
    
18. // controlWindowCanvas class
19. class MyCanvas extends ControlWindowCanvas {
20. public PImage P;
21. public MyCanvas() {
22. P = loadImage("C:/Users/arthur prior/Desktop/OUTPUT/" +MARGINmyTextfield.getText()  + "." + FILETYPE.captionLabel());
23. }
24. public void draw(PApplet theApplet) {
25. theApplet.image(P,0,0);
26. }
27. }
28. 
    
29. void setup() {
30. size(420, 594);  
31. 
    
32. 
    
33. frame.setLocation(0,0); // set to the position of the second display
34. 
    
35. controlP5 = new ControlP5(this); // initialize the GUI controls
36. 
    
37. println("Available serial ports:");
38. println(Serial.list());
39. 
    
40. port = new Serial(this, "COM8", 9600); 
41. 
    
42. MARGINmyTextfield = controlP5.addTextfield ("MARGIN",100,100,125,15); // addTextfield(name,x,y,width,height)
43. MARGINmyTextfield.setAutoClear (false);
44. MARGINmyTextfield.keepFocus (true); 
45. 
    
46. controlWindow = controlP5.addControlWindow("controlP5window",100,100,420, 594,30);
47. controlWindow.setUpdateMode(ControlWindow.NORMAL);
48. cc = new MyCanvas();
49. cc.pre();
50. controlWindow.addCanvas(cc);
51. 
    
52. controlP5.addButton       ("UPPE",     1,165,180,40,16); // buton(name,value,x,y,width,height)
53. controlP5.addButton       ("DOUNE",    1,165,220,40,16); // buton(name,value,x,y,width,height)
54. controlP5.addButton       ("RIHTE",    1,230,200,40,16); // buton(name,value,x,y,width,height)
55. controlP5.addButton       ("LIBBE",    1,100,200,40,16); // buton(name,value,x,y,width,height)
56. controlP5.addButton       ("RTN",      1,100,300,40,16); // buton(name,value,x,y,width,height)
57. controlP5.addButton       ("SCAN",     1,230,300,40,16); // buton(name,value,x,y,width,height)
58. controlP5.addButton       ("CLEAR",    1,230,100,40,16); // buton(name,value,x,y,width,height)
59.   
60. RESOLUTION = controlP5.addListBox("RESOLUTION",100,425,80,75);
61. RESOLUTION.setItemHeight(15);
62. RESOLUTION.setBarHeight(15); 
63. RESOLUTION.actAsPulldownMenu(true);
64. 
    
65. RESOLUTION.captionLabel().set("RESOLUTION (DPI)");
66. RESOLUTION.captionLabel().style().marginTop = 3;
67. RESOLUTION.valueLabel().style().marginTop = 3; // the +/- sign
68. 
    
69.   RESOLUTION.addItem("72", 72);
70.   RESOLUTION.addItem("150",150);
71.   RESOLUTION.addItem("240",240);
72.   RESOLUTION.addItem("300",300);
73.   RESOLUTION.addItem("360",360);
74.   RESOLUTION.addItem("400",400);
75.   RESOLUTION.addItem("600", 600);
76.   RESOLUTION.addItem("720",720);
77.   RESOLUTION.addItem("800",800);
78.   RESOLUTION.addItem("1200",1200);
79.   RESOLUTION.addItem("2400",2400);
80.   RESOLUTION.addItem("3200",3200);
81.   RESOLUTION.addItem("4800",4800);
82.   RESOLUTION.addItem("6400",6400);
83.   RESOLUTION.addItem("9600",9600);
84.   RESOLUTION.addItem("12800",12800);
85. 
    
86. RESOLUTION.setColorBackground(color(255,128));
87. RESOLUTION.setColorActive(color(0,0,255,128));
88. 
    
89. //////////////////////////////////////////////
90. 
    
91. FILETYPE = controlP5.addListBox("FILETYPE",192,425,80,120);
92. FILETYPE.setItemHeight(15);
93. FILETYPE.setBarHeight(15); 
94. FILETYPE.actAsPulldownMenu(true);
95. 
    
96. FILETYPE.captionLabel().set("FILE TYPE");
97. FILETYPE.captionLabel().style().marginTop = 3;
98. FILETYPE.valueLabel().style().marginTop = 3; // the +/- sign
99. 
    
100.   FILETYPE.addItem("jpg",1);
101.   FILETYPE.addItem("tiff",2);
102.   FILETYPE.addItem("png",3);
103.   FILETYPE.addItem("bmp",4);
104. 
     
105. FILETYPE.setColorBackground(color(255,128));
106. FILETYPE.setColorActive(color(0,0,255,128));
107. 
     
108. }
109.   void draw() {
110. }
111.   void controlEvent(ControlEvent theEvent) {
112.   println(theEvent.controller().name());
113. }
114.   void UPPE(int theValue){
115.   port.write('<'+"U"+MARGINmyTextfield.getText()+'>');
116.   println("sent"+"U"+MARGINmyTextfield.getText()+'>');
117. }
118.   void DOUNE(int theValue) {
119.   port.write('<'+"D"+MARGINmyTextfield.getText()+'>');
120.   println("sent"+"D"+MARGINmyTextfield.getText());
121. }
122.   void RIHTE(int theValue) {
123.   port.write('<'+"R"+MARGINmyTextfield.getText()+'>');
124.   println("sent"+"R"+MARGINmyTextfield.getText());
125. }
126.   void LIBBE(int theValue) {
127.   port.write('<'+"L"+MARGINmyTextfield.getText()+'>');
128.   println("sent"+"L"+MARGINmyTextfield.getText());
129. }
130.   void RTN(int theValue) {
131.   port.write('<'+"H"+MARGINmyTextfield.getText()+'>');
132.   println("sent"+"H"+MARGINmyTextfield.getText());
133. }
134.   void CLEAR(int theValue) {
135.   MARGINmyTextfield.clear();
136.   println("sent CLEAR"); // print it to the debug screen as well
137. }
138. 
     
139. void SCAN() {
140.     
141. try {
142.     TwainSource source = TwainManager.getDefaultSource();
143.     source.setVisible(false);
144.     double resolution = Double.parseDouble(RESOLUTION.stringValue());
145.     System.err.println("PARSE RESOLUTION : "+resolution);
146.     source.setResolution(resolution);
147.     System.err.println("RESOLUTION DPI : "+source.getResolution());
148.     
149.     MorenaImage morenaImage = new MorenaImage(source); 
150.     Image image=Toolkit.getDefaultToolkit().createImage(morenaImage); 
151.     BufferedImage bimg=new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
152.     bimg.createGraphics().drawImage(image, 0, 0, null);
153.     ImageIO.write(bimg, "jpg" , new File ("C:/Users/arthur prior/Desktop/OUTPUT/" +MARGINmyTextfield.getText()  + "." + FILETYPE.captionLabel()));
154.     
155. } catch (Exception ex) {
156. }
157. }
158. 
     
159.   void serialEvent(Serial aPort){
160.   String myString = aPort.readStringUntil('\n');
161.   if (myString != null){
162.   myString = trim(myString);
163.   println(myString);
164.   }
165. }
166. 
     
167. 
     
168. 
     
169. 
     
170. 
     
171. 
     
172. 
     

The error message I get is as follows:

Thankyou for your time! Best, Arthur

2. MorenaImage morenaImage = new MorenaImage(source); 
3. Image image=Toolkit.getDefaultToolkit().createImage(morenaImage); 
4. BufferedImage bimg=new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
5. bimg.createGraphics().drawImage(image, 0, 0, null);
6. PImage img = new PImage((java.awt.Image)bimg);
7. image(img, 0, 0);

I hope someone has an answer I'm losing faith! Of course I have made an assumption that a new PImage should open in a new window but this is the case in example upon which I have based my sketch

Best, Arthur

2. ListBox RESOLUTION;
3. 
   
4. ///////////////////
5. 
   
6. 
   
7. RESOLUTION = controlP5.addListBox("RESOLUTION",100,425,80,120);
8. RESOLUTION.setItemHeight(15);
9. RESOLUTION.setBarHeight(15); 
10. RESOLUTION.actAsPulldownMenu(true);
11. 
    
12. RESOLUTION.captionLabel().set("RESOLUTION (DPI)");
13. RESOLUTION.captionLabel().style().marginTop = 3;
14. RESOLUTION.valueLabel().style().marginTop = 3; // the +/- sign
15. 
    
16.   RESOLUTION.addItem("72",1);
17.   RESOLUTION.addItem("150",1);
18.   RESOLUTION.addItem("240",1);
19.   RESOLUTION.addItem("300",1);
20.   RESOLUTION.addItem("360",1);
21.   RESOLUTION.addItem("400",1);
22.   RESOLUTION.addItem("600",1);
23.   RESOLUTION.addItem("720",1);
24.   RESOLUTION.addItem("800",1);
25.   RESOLUTION.addItem("1200",1);
26.   RESOLUTION.addItem("2400",1);
27.   RESOLUTION.addItem("3200",1);
28.   RESOLUTION.addItem("4800",1);
29.   RESOLUTION.addItem("6400",1);
30.   RESOLUTION.addItem("9600",1);
31.   RESOLUTION.addItem("12800",1);
32. 
    
33. RESOLUTION.setColorBackground(color(255,128));
34. RESOLUTION.setColorActive(color(0,0,255,128));
35. 
    
36. //////////////////////////////////////////////
37. 
    
38. double resolution = Double.parseDouble(WHAT DO I TYPE HERE TO GET THE VALUE FROM THE LISTBOX???);   //////////////////////////////////////////////////////////// <----- THE PROBLEMATIC PART OF THE CODE
39.     System.err.println("PARSE RESOLUTION : "+resolution);
40.     source.setResolution(resolution);
41.     System.err.println("RESOLUTION DPI : "+source.getResolution());

My question is how do I retrieve the value from the listbox? I was thinking something along the lines of "RESOLUTION.stringValue()" but this doesn't seem to work. 

The bit "source.setResolution( );" likes 'doubles' so I need to convert the string from the listbox into a double using "parsedouble". Is this correct? Is the output from the listbox a string?

Any help would be greatly appreciated.

Kind Regards, Arthur

disableKeys()

It's a petty point, but I cant figure it out for the life of me! I'd really appreciate and suggestions as to how I can use it and where in the code I should put it. Otherwise, is there a method which is not specific to the control P5 library which I can use in Processing?

Kind Regards, Arthur

What I am trying to achieve is to send a signal from Processing (using the ControlP5 library) to an arduino board to control the speed of a stepper motor. For simplicity sake, lets imagine I'm trying to dim an LED (I will use the same pin to control the PUL of my motor).

Does anyone have a sample code that I can try?

Thankyou in advance for your time.

Best, arthur

What I am trying to achieve is a piece of code which loads a program, waits for the program to load before sending keystrokes to perform certain actions. I want to be able to load photoshop and do stuff in it before saving the file. at the moment im using the delay() function, however this is unreliable as the amount of time the program takes to load varies depending on how busy my computer is. this is the current code (i am using the robotclass library):

what i would like instead is something along the lines of:

is this at all possible. thankyou in advance for your time.