test dpi

src/main/java/fr/ill/ics/client/view/test/TestDPI.java

+package fr.ill.ics.client.view.test;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.swt.widgets.Text;
+
+import fr.ill.ics.client.view.factory.swt.SWTFontFactory;
+
+public class TestDPI {
+
+		private Display display;
+	
+	public static void main(String[] args) {
+		TestDPI moi = new TestDPI();
+		moi.run();
+	}
+	
+	
+	private void run() {
+				
+		display = new Display();
+	    final Shell shell = new Shell(display, SWT.SHELL_TRIM);
+	    shell.setLayout(new FillLayout());
+	    final Composite composite = new Composite(shell, SWT.BORDER);
+	    composite.setLayout(new GridLayout(2, false));
+	    Label label = new Label(composite, SWT.NONE);
+	    SWTFontFactory.getInstance().init(display);
+	    label.setFont(SWTFontFactory.getStandardFont());
+	    label.setText("Label");
+	    label.setLayoutData(getSizedGridData(label, 10, false, "Label"));
+	    label.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
+	    
+	    Text text = new Text(composite, SWT.NONE);
+	    text.setFont(SWTFontFactory.getStandardFont());
+	    text.setText("Text");
+	    text.setTextLimit(10);
+	    //text.setLayoutData(getSizedGridData(label, 10, false, "Text"));
+	    text.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
+	    
+	    System.out.println(getSizedGridData(text, 10, false, "Text").widthHint);
+	    System.out.println(getGridData(text, 10).widthHint);
+	    
+	    text.setLayoutData(getGridData(text, 10));
+	    // shell.pack();
+	    shell.setSize(200, 200);
+	    shell.open();
+	    while (!shell.isDisposed()) {
+	      if (!display.readAndDispatch())
+	        display.sleep();
+	    }
+	    display.dispose();
+	}
+
+
+
+	public GridData getSizedGridData(Control control, int maxLength, boolean isNumeric, String who) {
+
+		GridData gridData = new GridData();
+		gridData.grabExcessVerticalSpace = true;
+		gridData.verticalAlignment = GridData.CENTER;
+		
+		GC gc = new GC(display);
+		gc.setFont(control.getFont());
+		// H.ORTIZ: "h" replaced by "X" (for some strings "h" was not large enough...)
+		/* Extent for all letters (lower and upper cases):
+			i j l								3
+			f r t								4
+			s z									5
+			a b c d e g h k n o p q u v x y		6
+			w 									8
+			m									10
+			I J									3
+			E F L P S T Y						6
+			A B C K N R U V X Z 				7
+			D G H O Q							8
+			M 									9
+			W 									10
+		 */
+		Point extent = gc.textExtent("H"); 
+		System.out.println("Width for " + who + " = " + extent.x) ;
+		// H.ORTIZ: Not longer used: generates problem for property with large content (see for example table_step from startmono controller) 
+		// Avoid to have Text too large by limitating width to 400 pixels
+		//gridData.widthHint = Math.min(maxLength * extent.x, TEXT_MAX_WIDTH);
+		gridData.widthHint = maxLength * extent.x;
+		
+        gc.dispose();
+
+		return gridData;
+	}
+	
+	
+	 private GridData getGridData(Control control, int maxLength) {
+	        GC gc = new GC(control);
+
+	        Point dpi = display.getDPI(); 
+	        int extentX = gc.textExtent("H").x * maxLength;
+
+	        int textWidth = extentX * dpi.x / 79;
+	        
+	        gc.dispose();
+	        
+	        GridData gridData = new GridData();
+			gridData.grabExcessVerticalSpace = true;
+			gridData.verticalAlignment = GridData.CENTER;
+
+			gridData.widthHint = textWidth;
+			return gridData;
+	        // Définir la largeur du champ texte
+	        //textField.setSize(textWidth + 20, textField.getSize().y); // +20 pour une marge
+	    }
+	
+	
+	
+	
+}