Bug 515502 - [HiDPI][Win10] SWT to receive/handle DPI change
notification from OS
Change-Id: Ic0b851b76cbd5b270f4d4337de6ac6f2fb81812c
Signed-off-by: Niraj Modi <niraj.modi@in.ibm.com>
diff --git a/bundles/org.eclipse.swt/.settings/.api_filters b/bundles/org.eclipse.swt/.settings/.api_filters
index bcc9c37..2b78772 100644
--- a/bundles/org.eclipse.swt/.settings/.api_filters
+++ b/bundles/org.eclipse.swt/.settings/.api_filters
@@ -1227,6 +1227,12 @@
<message_argument value="OpenUrl"/>
</message_arguments>
</filter>
+ <filter id="336658481">
+ <message_arguments>
+ <message_argument value="org.eclipse.swt.SWT"/>
+ <message_argument value="ZoomChanged"/>
+ </message_arguments>
+ </filter>
<filter comment="@since 3.8 is valid in the 3.100 stream" id="1141899266">
<message_arguments>
<message_argument value="3.8"/>
diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/win32/org/eclipse/swt/internal/win32/OS.java b/bundles/org.eclipse.swt/Eclipse SWT PI/win32/org/eclipse/swt/internal/win32/OS.java
index a7c4c48..a9de9f7 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/win32/org/eclipse/swt/internal/win32/OS.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/win32/org/eclipse/swt/internal/win32/OS.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2000, 2017 IBM Corporation and others.
+ * Copyright (c) 2000, 2018 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
@@ -1885,6 +1885,7 @@
public static final int WM_CUT = 0x300;
public static final int WM_DEADCHAR = 0x103;
public static final int WM_DESTROY = 0x2;
+ public static final int WM_DPICHANGED = 0x02E0;
public static final int WM_DRAWITEM = 0x2b;
public static final int WM_ENDSESSION = 0x16;
public static final int WM_ENTERIDLE = 0x121;
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/SWT.java b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/SWT.java
index ea709c0..bec63ae 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/SWT.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/SWT.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2000, 2015 IBM Corporation and others.
+ * Copyright (c) 2000, 2018 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
@@ -856,6 +856,26 @@
*/
public static final int OpenUrl = 54;
+ /**
+ * The SWT zoom change event type (value is 55).
+ *
+ * <p>
+ * This event is sent on <code>Shell</code> when the SWT zoom has changed. SWT
+ * zoom changes when the system DPI or scale factor changes dynamically.
+ * </p>
+ * <p>
+ * Note: This operation is a hint and is not supported on platforms that do not
+ * have this concept. Currently supported on Windows10 only.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.108
+ */
+ public static final int ZoomChanged = 55;
+
/* Event Details */
/**
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Control.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Control.java
index e4e50d9..a759761 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Control.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Control.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2000, 2017 IBM Corporation and others.
+ * Copyright (c) 2000, 2018 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
@@ -4855,6 +4855,7 @@
case OS.WM_XBUTTONDBLCLK: result = WM_XBUTTONDBLCLK (wParam, lParam); break;
case OS.WM_XBUTTONDOWN: result = WM_XBUTTONDOWN (wParam, lParam); break;
case OS.WM_XBUTTONUP: result = WM_XBUTTONUP (wParam, lParam); break;
+ case OS.WM_DPICHANGED: result = WM_DPICHANGED (wParam, lParam); break;
}
if (result != null) return result.value;
// widget could be disposed at this point
@@ -4937,6 +4938,25 @@
return null;
}
+LRESULT WM_DPICHANGED (long /*int*/ wParam, long /*int*/ lParam) {
+ // Map DPI to Zoom and compare
+ int nativeZoom = DPIUtil.mapDPIToZoom (OS.HIWORD (wParam));
+ int newSWTZoom = DPIUtil.getZoomForAutoscaleProperty (nativeZoom);
+ int oldSWTZoom = DPIUtil.getDeviceZoom();
+
+ // Throw the DPI change event if zoom value changes
+ if (newSWTZoom != oldSWTZoom) {
+ Event event = new Event();
+ event.type = SWT.ZoomChanged;
+ event.widget = this;
+ event.detail = newSWTZoom;
+ event.doit = true;
+ notifyListeners(SWT.ZoomChanged, event);
+ return LRESULT.ZERO;
+ }
+ return LRESULT.ONE;
+}
+
LRESULT WM_DRAWITEM (long /*int*/ wParam, long /*int*/ lParam) {
DRAWITEMSTRUCT struct = new DRAWITEMSTRUCT ();
OS.MoveMemory (struct, lParam, DRAWITEMSTRUCT.sizeof);
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet373.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet373.java
new file mode 100644
index 0000000..718ede0
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet373.java
@@ -0,0 +1,263 @@
+package org.eclipse.swt.snippets;
+
+/*******************************************************************************
+ * Copyright (c) 2018 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.custom.*;
+import org.eclipse.swt.events.*;
+/*
+ * Snippet to display/refresh Monitor DPI dynamically if supported by OS.
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ *
+ * @since 3.0
+ */
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.widgets.*;
+
+/**
+ * Dynamic DPI with restart example snippet Display current monitors zoom
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ */
+public class Snippet373 {
+ private static final String IMAGE_100 = "eclipse16.png";
+ private static final String IMAGE_150 = "eclipse24.png";
+ private static final String IMAGE_200 = "eclipse32.png";
+
+ private static final String IMAGES_ROOT = "bin/org/eclipse/swt/snippets/";
+
+ private static final String IMAGE_PATH_100 = IMAGES_ROOT + IMAGE_100;
+ private static final String IMAGE_PATH_150 = IMAGES_ROOT + IMAGE_150;
+ private static final String IMAGE_PATH_200 = IMAGES_ROOT + IMAGE_200;
+ static final ImageFileNameProvider filenameProvider = zoom -> {
+ String path = null;
+ switch (zoom) {
+ case 150:
+ path = IMAGE_PATH_150;
+ break;
+ case 200:
+ path = IMAGE_PATH_200;
+ break;
+ default:
+ path = IMAGE_PATH_100;
+ }
+ return path;
+ };
+
+ public static void main(String[] args) {
+ System.setProperty("swt.autoScale", "quarter");
+ Display display = new Display();
+ final Image eclipse = new Image(display, filenameProvider);
+ final Image eclipseToolBar1 = new Image(display, filenameProvider);
+ final Image eclipseToolBar2 = new Image(display, filenameProvider);
+ final Image eclipseTableHeader = new Image(display, filenameProvider);
+ final Image eclipseTableItem = new Image(display, filenameProvider);
+ final Image eclipseTree1 = new Image(display, filenameProvider);
+ final Image eclipseTree2 = new Image(display, filenameProvider);
+ final Image eclipseCTab1 = new Image(display, filenameProvider);
+ final Image eclipseCTab2 = new Image(display, filenameProvider);
+
+ Shell shell = new Shell(display);
+ shell.setImage(eclipse);
+ shell.setText("DynamicDPI @ " + DPIUtil.getDeviceZoom());
+ shell.setLayout(new RowLayout(SWT.VERTICAL));
+ shell.setLocation(100, 100);
+ shell.setSize(500, 600);
+ shell.addListener(SWT.ZoomChanged, new Listener() {
+ @Override
+ public void handleEvent(Event e) {
+ if (display.getPrimaryMonitor().equals(shell.getMonitor())) {
+ MessageBox box = new MessageBox(shell, SWT.PRIMARY_MODAL | SWT.OK | SWT.CANCEL);
+ box.setText(shell.getText());
+ box.setMessage("DPI changed, do you want to exit & restart ?");
+ e.doit = (box.open() == SWT.OK);
+ if (e.doit) {
+ shell.close();
+ System.out.println("Program exit.");
+ }
+ }
+ }
+ });
+
+ // Menu
+ Menu bar = new Menu(shell, SWT.BAR);
+ shell.setMenuBar(bar);
+ MenuItem fileItem = new MenuItem(bar, SWT.CASCADE);
+ fileItem.setText("&File");
+ fileItem.setImage(eclipse);
+ Menu submenu = new Menu(shell, SWT.DROP_DOWN);
+ fileItem.setMenu(submenu);
+ MenuItem subItem = new MenuItem(submenu, SWT.PUSH);
+ subItem.addListener(SWT.Selection, e -> System.out.println("Select All"));
+ subItem.setText("Select &All\tCtrl+A");
+ subItem.setAccelerator(SWT.MOD1 + 'A');
+ subItem.setImage(eclipse);
+
+ // CTabFolder
+ CTabFolder folder = new CTabFolder(shell, SWT.BORDER);
+ for (int i = 0; i < 2; i++) {
+ CTabItem cTabItem = new CTabItem(folder, i % 2 == 0 ? SWT.CLOSE : SWT.NONE);
+ cTabItem.setText("Item " + i);
+ Text textMsg = new Text(folder, SWT.MULTI);
+ textMsg.setText("Content for Item " + i);
+ cTabItem.setControl(textMsg);
+ cTabItem.setImage((i % 2 == 1) ? eclipseCTab1 : eclipseCTab2);
+ }
+
+ // PerMonitorV2 setting
+// Label label = new Label (shell, SWT.BORDER);
+// label.setText("PerMonitorV2 value before:after:Error");
+// Text text = new Text(shell, SWT.BORDER);
+// text.setText(DPIUtil.BEFORE + ":" + DPIUtil.AFTER + ":" + DPIUtil.RESULT);
+
+ // Composite for Label, Button, Tool-bar
+ Composite composite = new Composite(shell, SWT.BORDER);
+ composite.setLayout(new RowLayout(SWT.HORIZONTAL));
+
+ // Label with Image
+ Label label1 = new Label(composite, SWT.BORDER);
+ label1.setImage(eclipse);
+
+ // Label with text only
+ Label label2 = new Label(composite, SWT.BORDER);
+ label2.setText("No Image");
+
+ // Button with text + Old Image Constructor
+ Button oldButton1 = new Button(composite, SWT.PUSH);
+ oldButton1.setText("Old Img");
+ oldButton1.setImage(new Image(display, IMAGE_PATH_100));
+
+ // Button with Old Image Constructor
+// Button oldButton2 = new Button(composite, SWT.PUSH);
+// oldButton2.setImage(new Image(display, filenameProvider.getImagePath(100)));
+
+ // Button with Image
+ Button createDialog = new Button(composite, SWT.PUSH);
+ createDialog.setText("Child Dialog");
+ createDialog.setImage(eclipse);
+ createDialog.addSelectionListener(new SelectionAdapter() {
+
+ @Override
+ public void widgetSelected(SelectionEvent event) {
+ final Shell dialog = new Shell(shell, SWT.DIALOG_TRIM | SWT.RESIZE);
+ dialog.setText("Child Dialog");
+ RowLayout rowLayout = new RowLayout(SWT.VERTICAL);
+ dialog.setLayout(rowLayout);
+ Label label = new Label(dialog, SWT.BORDER);
+ label.setImage(eclipse);
+ Point location = shell.getLocation();
+ dialog.setLocation(location.x + 250, location.y + 50);
+ dialog.pack();
+ dialog.open();
+ }
+ });
+
+ // Toolbar with Image
+ ToolBar toolBar = new ToolBar(composite, SWT.FLAT | SWT.BORDER);
+ Rectangle clientArea = shell.getClientArea();
+ toolBar.setLocation(clientArea.x, clientArea.y);
+ for (int i = 0; i < 2; i++) {
+ int style = i % 2 == 1 ? SWT.DROP_DOWN : SWT.PUSH;
+ ToolItem toolItem = new ToolItem(toolBar, style);
+ toolItem.setImage((i % 2 == 0) ? eclipseToolBar1 : eclipseToolBar2);
+ toolItem.setEnabled(i % 2 == 0);
+ }
+ toolBar.pack();
+
+ Button button = new Button(shell, SWT.PUSH);
+ button.setText("Refresh-Current Monitor : Zoom");
+ Text text1 = new Text(shell, SWT.BORDER);
+ Monitor monitor = button.getMonitor();
+ text1.setText("" + monitor.getZoom());
+ button.addMouseListener(new MouseAdapter() {
+ @Override
+ public void mouseDown(MouseEvent e) {
+ Monitor monitor = button.getMonitor();
+ text1.setText("" + monitor.getZoom());
+ }
+ });
+ Button button2 = new Button(shell, SWT.PUSH);
+ button2.setText("Refresh-Both Monitors : Zoom");
+ Text text2 = new Text(shell, SWT.BORDER);
+ Monitor[] monitors = display.getMonitors();
+ StringBuffer text2String = new StringBuffer();
+ for (int i = 0; i < monitors.length; i++) {
+ text2String.append(monitors[i].getZoom() + (i < (monitors.length - 1) ? " - " : ""));
+ }
+ text2.setText(text2String.toString());
+ button2.addMouseListener(new MouseAdapter() {
+ @Override
+ public void mouseDown(MouseEvent e) {
+ Monitor[] monitors = display.getMonitors();
+ StringBuffer text2String = new StringBuffer();
+ for (int i = 0; i < monitors.length; i++) {
+ text2String.append(monitors[i].getZoom() + (i < (monitors.length - 1) ? " - " : ""));
+ }
+ text2.setText(text2String.toString());
+ }
+ });
+
+ // Table
+ Table table = new Table(shell, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION);
+ table.setLinesVisible(true);
+ table.setHeaderVisible(true);
+ String titles[] = { "Title 1" };
+ for (int i = 0; i < titles.length; i++) {
+ TableColumn column = new TableColumn(table, SWT.NONE);
+ column.setText(titles[i]);
+ column.setImage(eclipseTableHeader);
+ }
+ for (int i = 0; i < 1; i++) {
+ TableItem item = new TableItem(table, SWT.NONE);
+ item.setText(0, "Data " + i);
+ item.setImage(0, eclipseTableItem);
+ }
+ for (int i = 0; i < titles.length; i++) {
+ table.getColumn(i).pack();
+ }
+
+ // Tree
+ final Tree tree = new Tree(shell, SWT.BORDER);
+ for (int i = 0; i < 1; i++) {
+ TreeItem iItem = new TreeItem(tree, 0);
+ iItem.setText("TreeItem (0) -" + i);
+ iItem.setImage(eclipseTree1);
+ TreeItem jItem = null;
+ for (int j = 0; j < 1; j++) {
+ jItem = new TreeItem(iItem, 0);
+ jItem.setText("TreeItem (1) -" + j);
+ jItem.setImage(eclipseTree2);
+ jItem.setExpanded(true);
+ }
+ tree.select(jItem);
+ }
+
+ // Shell Location
+ Monitor primary = display.getPrimaryMonitor();
+ Rectangle bounds = primary.getBounds();
+ Rectangle rect = shell.getBounds();
+ int x = bounds.x + (bounds.width - rect.width) / 2;
+ int y = bounds.y + (bounds.height - rect.height) / 2;
+ shell.setLocation(x, y);
+ shell.open();
+ while (!shell.isDisposed()) {
+ if (!display.readAndDispatch())
+ display.sleep();
+ }
+ display.dispose();
+ }
+}
