diff options
Diffstat (limited to 'src/nativewindow/classes')
| -rw-r--r-- | src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java b/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java index 48661170c..d99519878 100644 --- a/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java +++ b/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java @@ -35,7 +35,9 @@ import java.security.PrivilegedAction; import org.eclipse.swt.graphics.GCData; import org.eclipse.swt.graphics.Rectangle; +import org.eclipse.swt.internal.DPIUtil; import org.eclipse.swt.widgets.Control; +import org.eclipse.swt.widgets.Scrollable; import com.jogamp.nativewindow.AbstractGraphicsScreen; import com.jogamp.nativewindow.NativeWindowException; @@ -56,6 +58,8 @@ import jogamp.nativewindow.Debug; public class SWTAccessor { private static final boolean DEBUG = Debug.debug("SWT"); + private static final Method swt_scrollable_clientAreaInPixels; + private static final Field swt_control_handle; private static final boolean swt_uses_long_handles; @@ -139,6 +143,18 @@ public class SWTAccessor { isWindows = NativeWindowFactory.TYPE_WINDOWS == nwt; isX11 = NativeWindowFactory.TYPE_X11 == nwt; + Method m = null; + try { + m = Scrollable.class.getDeclaredMethod("getClientAreaInPixels"); + m.setAccessible(true); + } catch (final Exception ex) { + m = null; + if( DEBUG ) { + System.err.println("getClientAreaInPixels not implemented: "+ex.getMessage()); + } + } + swt_scrollable_clientAreaInPixels = m; + Field f = null; if( !isOSX ) { try { @@ -159,7 +175,7 @@ public class SWTAccessor { // System.err.println("SWT long handles: " + swt_uses_long_handles); // System.err.println("Platform 64bit: "+Platform.is64Bit()); - Method m=null; + m=null; try { m = ReflectionUtil.getMethod(Control.class, str_internal_new_GC, new Class[] { GCData.class }); } catch (final Exception ex) { @@ -167,6 +183,7 @@ public class SWTAccessor { } swt_control_internal_new_GC = m; + m=null; try { if(swt_uses_long_handles) { m = Control.class.getDeclaredMethod(str_internal_dispose_GC, new Class[] { long.class, GCData.class }); @@ -350,6 +367,43 @@ public class SWTAccessor { // /** + * Returns the unscaled {@link Scrollable#getClientArea()} in pixels. + * <p> + * If the package restricted method {@link Scrollable#getClientAreaInPixels()} + * is implemented, we return its result. + * </p> + * <p> + * Fallback is to return {@link DPIUtil#autoScaleUp(Rectangle) DPIUtil#autoScaleUp}({@link Scrollable#getClientArea()}), + * reverting {@link Scrollable#getClientArea()}'s {@link DPIUtil#autoScaleDown(Rectangle)}. + * </p> + * <p> + * Note to SWT's API spec writers: You need to allow access to the unscaled value, scale properties and define what is being scaled (fonts, images, ..). + * Further more the scale should be separate for x/y coordinates, as DPI differs here. + * </p> + * <p> + * Note to Eclipse authors: Scaling up the fonts and images hardly works on GTK/SWT/Eclipse. + * GDK_SCALE, GDK_DPI_SCALE and swt.autoScale produce inconsistent results with Eclipse. + * Broken High-DPI for .. some years now. + * </p> + * + * Requires SWT >= 3.105 (DPIUtil) + * + * @param s the {@link Scrollable} instance + * @return unscaled client area in pixels, see above + * @throws NativeWindowException during invocation of the method, if any + */ + public static Rectangle getClientAreaInPixels(final Scrollable s) throws NativeWindowException { + if( null == swt_scrollable_clientAreaInPixels ) { + return DPIUtil.autoScaleUp(s.getClientArea()); + } + try { + return (Rectangle) swt_scrollable_clientAreaInPixels.invoke(s); + } catch (final Throwable e) { + throw new NativeWindowException(e); + } + } + + /** * @param swtControl the SWT Control to retrieve the native widget-handle from * @return the native widget-handle * @throws NativeWindowException if the widget handle is null |