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com.alee.laf.label.AbstractLabelPainter Maven / Gradle / Ivy
/*
* This file is part of WebLookAndFeel library.
*
* WebLookAndFeel library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WebLookAndFeel library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WebLookAndFeel library. If not, see component type
* @param component UI type
* @param decoration type
* @author Mikle Garin
*/
public abstract class AbstractLabelPainter>
extends AbstractDecorationPainter implements IAbstractLabelPainter
{
/**
* Style settings.
*/
protected boolean drawShade;
protected Color shadeColor;
protected int shadeSize;
protected Rotation rotation;
/**
* Runtime variables.
*/
protected Rectangle paintIconR = new Rectangle ();
protected Rectangle paintTextR = new Rectangle ();
protected Rectangle paintViewR = new Rectangle ();
/**
* Returns actual label rotation.
*
* @return actual label rotation
*/
protected Rotation getActualRotation ()
{
return rotation != null ? ltr ? rotation : rotation.rightToLeft () : Rotation.none;
}
@Override
protected Boolean isOpaqueUndecorated ()
{
return false;
}
@Override
public Insets getCompleteBorder ()
{
final Insets border = super.getCompleteBorder ();
if ( border != null )
{
switch ( getActualRotation () )
{
case counterClockwise:
return i ( border.left, border.bottom, border.right, border.top );
case upsideDown:
return i ( border.bottom, border.right, border.top, border.left );
case clockwise:
return i ( border.right, border.top, border.left, border.bottom );
}
}
return border;
}
@Override
protected void paintContent ( final Graphics2D g2d, final Rectangle bounds, final E c, final U ui )
{
// Applying graphics settings
final Font oldFont = GraphicsUtils.setupFont ( g2d, c.getFont () );
final Paint oldPaint = g2d.getPaint ();
// Paint background
paintBackground ( g2d, bounds, c, ui );
// Retrieving icon & text
final String text = c.getText ();
final Icon icon = ( c.isEnabled () ) ? c.getIcon () : c.getDisabledIcon ();
// Check icon/text existance
if ( icon == null && text == null )
{
return;
}
// Applying label rotation
final Rotation rotation = getActualRotation ();
if ( rotation != Rotation.none )
{
double angle = 0;
double rX = 0;
double rY = 0;
switch ( rotation )
{
case clockwise:
angle = Math.PI / 2;
rX = bounds.width;
rY = bounds.width;
break;
case upsideDown:
angle = Math.PI;
rX = bounds.width;
rY = bounds.height;
break;
case counterClockwise:
angle = -Math.PI / 2;
rX = bounds.height;
rY = bounds.height;
break;
}
g2d.rotate ( angle, rX / 2, rY / 2 );
}
// Layouting label elements before painting them
final FontMetrics fm = c.getFontMetrics ( c.getFont () );
final String clippedText = layout ( c, fm, c.getWidth (), c.getHeight () );
// Painting icon and text
paintIcon ( g2d, c, icon );
paintText ( g2d, c, clippedText, fm );
// Restoring graphics settings
g2d.setPaint ( oldPaint );
GraphicsUtils.restoreFont ( g2d, oldFont );
}
/**
* Paints background.
* todo Should be removed upon as soon as decoration supports all kinds of borders used in extending painters so far
*
* @param g2d graphics context
* @param bounds bounds for painter visual data
* @param label painted component
* @param ui painted component UI
*/
protected void paintBackground ( final Graphics2D g2d, final Rectangle bounds, final E label, final U ui )
{
// Basic label doesn't have any background
}
/**
* Paints label icon.
*
* @param g2d graphics context
* @param label painted component
* @param icon label icon
*/
protected void paintIcon ( final Graphics2D g2d, final E label, final Icon icon )
{
if ( icon != null )
{
icon.paintIcon ( label, g2d, paintIconR.x, paintIconR.y );
}
}
/**
* Paints label text.
*
* @param g2d graphics context
* @param label painted component
* @param text label text
* @param fm label font metrics
*/
protected void paintText ( final Graphics2D g2d, final E label, final String text, final FontMetrics fm )
{
if ( text != null )
{
final Map textHints = drawShade ? StyleConstants.defaultTextRenderingHints : StyleConstants.textRenderingHints;
final Map oldHints = SwingUtils.setupTextAntialias ( g2d, textHints );
if ( isHtmlText ( label ) )
{
paintHtmlText ( g2d, label );
}
else
{
paintPlainText ( g2d, label, text, fm );
}
SwingUtils.restoreTextAntialias ( g2d, oldHints );
}
}
/**
* Returns whether or not label contains HTML text.
*
* @param label painted component
* @return true if label contains HTML text, false otherwise
*/
protected boolean isHtmlText ( final E label )
{
return label.getClientProperty ( BasicHTML.propertyKey ) != null;
}
/**
* Paints HTML text view.
*
* @param g2d graphics context
* @param label painted component
*/
protected void paintHtmlText ( final Graphics2D g2d, final E label )
{
final View v = ( View ) label.getClientProperty ( BasicHTML.propertyKey );
v.paint ( g2d, paintTextR );
}
/**
* Paints plain text view.
*
* @param g2d graphics context
* @param label painted component
* @param text label text
* @param fm label font metrics
*/
protected void paintPlainText ( final Graphics2D g2d, final E label, final String text, final FontMetrics fm )
{
final int textX = paintTextR.x;
final int textY = paintTextR.y + fm.getAscent ();
if ( label.isEnabled () )
{
paintEnabledText ( label, g2d, text, textX, textY );
}
else
{
paintDisabledText ( label, g2d, text, textX, textY );
}
}
/**
* Updates painted label layout and returns clipped or full label text.
*
* @param label painted component
* @param fm label font metrics
* @param width label width
* @param height label height
* @return clipped or full label text
*/
protected String layout ( final E label, final FontMetrics fm, final int width, final int height )
{
final Insets insets = label.getInsets ( null );
final Icon icon = ( label.isEnabled () ) ? label.getIcon () : label.getDisabledIcon ();
paintViewR.x = insets.left;
paintViewR.y = insets.top;
if ( getActualRotation ().isVertical () )
{
paintViewR.width = height;
paintViewR.height = width;
}
else
{
paintViewR.width = width;
paintViewR.height = height;
}
paintViewR.width -= insets.left + insets.right;
paintViewR.height -= insets.top + insets.bottom;
paintIconR.x = paintIconR.y = paintIconR.width = paintIconR.height = 0;
paintTextR.x = paintTextR.y = paintTextR.width = paintTextR.height = 0;
return layoutCL ( label, fm, label.getText (), icon, paintViewR, paintIconR, paintTextR );
}
/**
* Performs label layout and returns clipped or full label text.
*
* @param label painted component
* @param fm label font metrics
* @param text label text
* @param icon label icon
* @param viewR rectangle limited by label insets
* @param iconR icon rectangle dummy
* @param textR text rectangle dummy
* @return clipped or full label text
*/
protected String layoutCL ( final E label, final FontMetrics fm, final String text, final Icon icon, final Rectangle viewR,
final Rectangle iconR, final Rectangle textR )
{
return SwingUtilities.layoutCompoundLabel ( label, fm, text, icon, label.getVerticalAlignment (), label.getHorizontalAlignment (),
label.getVerticalTextPosition (), label.getHorizontalTextPosition (), viewR, iconR, textR, label.getIconTextGap () );
}
/**
* Performs enabled text painting.
*
* @param label painted component
* @param g2d graphics context
* @param text label text
* @param textX text X coordinate
* @param textY text Y coordinate
*/
protected void paintEnabledText ( final E label, final Graphics2D g2d, final String text, final int textX, final int textY )
{
if ( drawShade )
{
g2d.setPaint ( label.getForeground () );
paintShadowText ( g2d, text, textX, textY );
}
else
{
final int mnemIndex = label.getDisplayedMnemonicIndex ();
g2d.setPaint ( label.getForeground () );
SwingUtils.drawStringUnderlineCharAt ( g2d, text, mnemIndex, textX, textY );
}
}
/**
* Performs disabled text painting.
*
* @param label painted component
* @param g2d graphics context
* @param text label text
* @param textX text X coordinate
* @param textY text Y coordinate
*/
protected void paintDisabledText ( final E label, final Graphics2D g2d, final String text, final int textX, final int textY )
{
if ( label.isEnabled () && drawShade )
{
g2d.setPaint ( label.getBackground ().darker () );
paintShadowText ( g2d, text, textX, textY );
}
else
{
final int accChar = label.getDisplayedMnemonicIndex ();
final Color background = label.getBackground ();
g2d.setPaint ( background.brighter () );
SwingUtils.drawStringUnderlineCharAt ( g2d, text, accChar, textX + 1, textY + 1 );
g2d.setPaint ( background.darker () );
SwingUtils.drawStringUnderlineCharAt ( g2d, text, accChar, textX, textY );
}
}
/**
* Paints custom text shade.
*
* @param g2d graphics context
* @param text text
* @param textX text X coordinate
* @param textY text Y coordinate
*/
protected void paintShadowText ( final Graphics2D g2d, final String text, final int textX, final int textY )
{
g2d.translate ( textX, textY );
GraphicsUtils.paintTextEffect ( g2d, text, shadeColor, shadeSize, -shadeSize, 1 - shadeSize, true );
g2d.translate ( -textX, -textY );
}
@Override
public Dimension getPreferredSize ()
{
Dimension ps = getContentSize ();
final Insets cb = getCompleteBorder ();
if ( cb != null )
{
ps.width += cb.left + cb.right;
ps.height += cb.top + cb.bottom;
}
if ( getActualRotation ().isVertical () )
{
ps = transposeDimension ( ps );
}
return ps;
}
/**
* Returns label content size.
*
* @return label content size.
*/
protected Dimension getContentSize ()
{
final String text = component.getText ();
final Icon icon = ( component.isEnabled () ) ? component.getIcon () : component.getDisabledIcon ();
final Font font = component.getFont ();
if ( ( icon == null ) && ( ( text == null ) || ( ( text != null ) && ( font == null ) ) ) )
{
return new Dimension ( 0, 0 );
}
else if ( ( text == null ) || ( ( icon != null ) && ( font == null ) ) )
{
return new Dimension ( icon.getIconWidth (), icon.getIconHeight () );
}
else
{
final FontMetrics fm = component.getFontMetrics ( font );
final Rectangle iconR = new Rectangle ();
final Rectangle textR = new Rectangle ();
final Rectangle viewR = new Rectangle ();
iconR.x = iconR.y = iconR.width = iconR.height = 0;
textR.x = textR.y = textR.width = textR.height = 0;
viewR.x = 0;
viewR.y = 0;
viewR.width = viewR.height = Short.MAX_VALUE;
layoutCL ( component, fm, text, icon, viewR, iconR, textR );
final int x1 = Math.min ( iconR.x, textR.x );
final int x2 = Math.max ( iconR.x + iconR.width, textR.x + textR.width );
final int y1 = Math.min ( iconR.y, textR.y );
final int y2 = Math.max ( iconR.y + iconR.height, textR.y + textR.height );
return new Dimension ( x2 - x1, y2 - y1 );
}
}
/**
* Returns transposed dimension.
*
* @param from dimension to transpose
* @return transposed dimension
*/
protected Dimension transposeDimension ( final Dimension from )
{
return new Dimension ( from.height, from.width );
}
}
