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Drop shadows: support enabling/disabling drop shadows per component (issue #94)

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This commit is contained in:
Karl Tauber
2020-05-14 11:39:09 +02:00
parent ace07cd9cb
commit bf0ffc6ac2
2 changed files with 31 additions and 1 deletions
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9
flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java
View File

@@ -103,6 +103,15 @@ public interface FlatClientProperties
*/
String MINIMUM_HEIGHT = "JComponent.minimumHeight";
/**
* Specifies whether a drop shadow is painted if the component is shown in a popup
* or if the component is the owner of another component that is shown in a popup.
* <p>
* <strong>Component</strong> {@link javax.swing.JComponent}<br>
* <strong>Value type</strong> {@link java.lang.Boolean}
*/
String POPUP_DROP_SHADOW_PAINTED = "Popup.dropShadowPainted";
/**
* Specifies whether the progress bar has always the larger height even if no string is painted.
* <p>

23
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatPopupFactory.java
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@@ -31,6 +31,7 @@ import javax.swing.PopupFactory;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.border.Border;
import com.formdev.flatlaf.FlatClientProperties;
import com.formdev.flatlaf.util.SystemInfo;
/**
@@ -50,7 +51,7 @@ public class FlatPopupFactory
public Popup getPopup( Component owner, Component contents, int x, int y )
throws IllegalArgumentException
{
if( !UIManager.getBoolean( "Popup.dropShadowPainted" ) )
if( !isDropShadowPainted( owner, contents ) )
return super.getPopup( owner, contents, x, y );
// macOS and Linux adds drop shadow to heavy weight popups
@@ -70,6 +71,26 @@ public class FlatPopupFactory
return new DropShadowPopup( popup, owner, contents );
}
private boolean isDropShadowPainted( Component owner, Component contents ) {
Boolean b = isDropShadowPainted( owner );
if( b != null )
return b;
b = isDropShadowPainted( contents );
if( b != null )
return b;
return UIManager.getBoolean( "Popup.dropShadowPainted" );
}
private Boolean isDropShadowPainted( Component c ) {
if( !(c instanceof JComponent) )
return null;
Object value = ((JComponent)c).getClientProperty( FlatClientProperties.POPUP_DROP_SHADOW_PAINTED );
return (value instanceof Boolean ) ? (Boolean) value : null;
}
/**
* There is no API in Java 8 to force creation of heavy weight popups,
* but it is possible with reflection. Java 9 provides a new method.