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/*
* Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.scene.text;
import javafx.scene.shape.PathElement;
import com.sun.javafx.geom.BaseBounds;
import com.sun.javafx.geom.Shape;
import java.util.Objects;
public interface TextLayout {
/* Internal flags Flags */
static final int FLAGS_LINES_VALID = 1 << 0; /* unused */
static final int FLAGS_ANALYSIS_VALID = 1 << 1;
static final int FLAGS_HAS_TABS = 1 << 2;
static final int FLAGS_HAS_BIDI = 1 << 3;
static final int FLAGS_HAS_COMPLEX = 1 << 4;
static final int FLAGS_HAS_EMBEDDED = 1 << 5;
static final int FLAGS_HAS_CJK = 1 << 6;
static final int FLAGS_WRAPPED = 1 << 7;
static final int FLAGS_RTL_BASE = 1 << 8;
static final int FLAGS_CACHED_UNDERLINE = 1 << 9;
static final int FLAGS_CACHED_STRIKETHROUGH = 1 << 10;
static final int FLAGS_LAST = 1 << 11;
static final int ANALYSIS_MASK = FLAGS_LAST - 1;
/* Text Layout compact internal representation */
static final int ALIGN_LEFT = 1 << 18;
static final int ALIGN_CENTER = 1 << 19;
static final int ALIGN_RIGHT = 1 << 20;
static final int ALIGN_JUSTIFY = 1 << 21;
static final int ALIGN_MASK = ALIGN_LEFT | ALIGN_CENTER |
ALIGN_RIGHT | ALIGN_JUSTIFY;
public static final int DIRECTION_LTR = 1 << 10;
public static final int DIRECTION_RTL = 1 << 11;
public static final int DIRECTION_DEFAULT_LTR = 1 << 12;
public static final int DIRECTION_DEFAULT_RTL = 1 << 13;
static final int DIRECTION_MASK = DIRECTION_LTR | DIRECTION_RTL |
DIRECTION_DEFAULT_LTR |
DIRECTION_DEFAULT_RTL;
public static final int BOUNDS_CENTER = 1 << 14;
public static final int BOUNDS_MASK = BOUNDS_CENTER;
public static final int TYPE_TEXT = 1 << 0;
public static final int TYPE_UNDERLINE = 1 << 1;
public static final int TYPE_STRIKETHROUGH = 1 << 2;
public static final int TYPE_BASELINE = 1 << 3;
public static final int TYPE_TOP = 1 << 4;
public static final int TYPE_BEARINGS = 1 << 5;
public static final int DEFAULT_TAB_SIZE = 8;
public static class Hit {
int charIndex;
int insertionIndex;
boolean leading;
public Hit(int charIndex, int insertionIndex, boolean leading) {
this.charIndex = charIndex;
this.insertionIndex = insertionIndex;
this.leading = leading;
}
public int getCharIndex() { return charIndex; }
public int getInsertionIndex() { return insertionIndex; }
public boolean isLeading() { return leading; }
@Override
public int hashCode() {
return Objects.hash(charIndex, insertionIndex, leading);
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Hit other = (Hit) obj;
return charIndex == other.charIndex && insertionIndex == other.insertionIndex && leading == other.leading;
}
@Override
public String toString() {
return "Hit[charIndex=" + charIndex + ", insertionIndex=" + insertionIndex + ", leading=" + leading + "]";
}
}
/**
* Sets the content for the TextLayout. Supports multiple spans (rich text).
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setContent(TextSpan[] spans);
/**
* Sets the content for the TextLayout. Shorthand for single span text
* (no rich text).
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setContent(String string, Object font);
/**
* Sets the alignment for the TextLayout.
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setAlignment(/*TextAlignment*/ int alignment);
/**
* Sets the wrap width for the TextLayout.
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setWrapWidth(float wrapWidth);
/**
* Sets the line spacing for the TextLayout.
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setLineSpacing(float spacing);
/**
* Sets the direction (bidi algorithm's) for the TextLayout.
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setDirection(int direction);
/**
* Sets the bounds type for the TextLayout.
*
* @return returns true is the call modifies the layout internal state.
*/
public boolean setBoundsType(int type);
/**
* Returns the (logical) bounds of the layout
* minX is always zero
* minY is the ascent of the first line (negative)
* width the width of the widest line
* height the sum of all lines height
*
* Note that this width is different the wrapping width!
*
* @return the layout bounds
*/
public BaseBounds getBounds();
public BaseBounds getBounds(TextSpan filter, BaseBounds bounds);
/**
* Returns the visual bounds of the layout using glyph bounding box
*
* @return the visual bounds
*/
public BaseBounds getVisualBounds(int type);
/**
* Returns the lines of text layout.
*
* @return the text lines
*/
public TextLine[] getLines();
/**
* Returns the GlyphList of text layout.
* The runs are returned order visually (rendering order), starting
* from the first line.
*
* @return the runs
*/
public GlyphList[] getRuns();
/**
* Returns the shape of the entire text layout relative to the baseline
* of the first line.
*
* @param type the type of the shapes to include
* @return the shape
*/
public Shape getShape(int type, TextSpan filter);
/**
* Sets the tab size for the TextLayout.
*
* @param spaces the number of spaces represented by a tab. Default is 8.
* Minimum is 1, lower values will be clamped to 1.
* @return returns true if the call modifies the layout internal state.
*/
public boolean setTabSize(int spaces);
/**
* Calculates character index and insertion index for the given coordinates
* and maps to {@link Hit} class.
*
* @param x x coordinate value.
* @param y y coordinate value.
* @return returns a {@link Hit} object containing character index, insertion index and position of cursor on the character.
*/
public Hit getHitInfo(float x, float y);
public PathElement[] getCaretShape(int offset, boolean isLeading,
float x, float y);
public PathElement[] getRange(int start, int end, int type,
float x, float y);
}
