237 lines
8.8 KiB
Java
237 lines
8.8 KiB
Java
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.java.swing.plaf.windows;
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import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.Rectangle;
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import java.awt.Shape;
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import javax.swing.plaf.basic.*;
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import javax.swing.*;
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import javax.swing.plaf.TextUI;
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import javax.swing.plaf.UIResource;
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import javax.swing.text.*;
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/**
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* Windows text rendering.
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is appropriate
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* for short term storage or RMI between applications running the same
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* version of Swing. A future release of Swing will provide support for
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* long term persistence.
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*/
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public abstract class WindowsTextUI extends BasicTextUI {
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/**
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* Creates the object to use for a caret. By default an
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* instance of WindowsCaret is created. This method
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* can be redefined to provide something else that implements
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* the InputPosition interface or a subclass of DefaultCaret.
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*
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* @return the caret object
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*/
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protected Caret createCaret() {
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return new WindowsCaret();
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}
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/* public */
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static LayeredHighlighter.LayerPainter WindowsPainter = new WindowsHighlightPainter(null);
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/* public */
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static class WindowsCaret extends DefaultCaret
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implements UIResource {
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/**
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* Gets the painter for the Highlighter.
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*
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* @return the painter
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*/
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protected Highlighter.HighlightPainter getSelectionPainter() {
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return WindowsTextUI.WindowsPainter;
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}
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}
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/* public */
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static class WindowsHighlightPainter extends
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DefaultHighlighter.DefaultHighlightPainter {
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WindowsHighlightPainter(Color c) {
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super(c);
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}
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// --- HighlightPainter methods ---------------------------------------
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/**
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* Paints a highlight.
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*
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* @param g the graphics context
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* @param offs0 the starting model offset >= 0
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* @param offs1 the ending model offset >= offs1
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* @param bounds the bounding box for the highlight
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* @param c the editor
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*/
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public void paint(Graphics g, int offs0, int offs1, Shape bounds, JTextComponent c) {
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Rectangle alloc = bounds.getBounds();
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try {
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// --- determine locations ---
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TextUI mapper = c.getUI();
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Rectangle p0 = mapper.modelToView(c, offs0);
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Rectangle p1 = mapper.modelToView(c, offs1);
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// --- render ---
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Color color = getColor();
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if (color == null) {
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g.setColor(c.getSelectionColor());
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}
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else {
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g.setColor(color);
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}
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boolean firstIsDot = false;
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boolean secondIsDot = false;
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if (c.isEditable()) {
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int dot = c.getCaretPosition();
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firstIsDot = (offs0 == dot);
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secondIsDot = (offs1 == dot);
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}
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if (p0.y == p1.y) {
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// same line, render a rectangle
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Rectangle r = p0.union(p1);
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if (r.width > 0) {
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if (firstIsDot) {
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r.x++;
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r.width--;
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}
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else if (secondIsDot) {
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r.width--;
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}
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}
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g.fillRect(r.x, r.y, r.width, r.height);
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} else {
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// different lines
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int p0ToMarginWidth = alloc.x + alloc.width - p0.x;
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if (firstIsDot && p0ToMarginWidth > 0) {
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p0.x++;
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p0ToMarginWidth--;
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}
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g.fillRect(p0.x, p0.y, p0ToMarginWidth, p0.height);
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if ((p0.y + p0.height) != p1.y) {
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g.fillRect(alloc.x, p0.y + p0.height, alloc.width,
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p1.y - (p0.y + p0.height));
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}
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if (secondIsDot && p1.x > alloc.x) {
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p1.x--;
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}
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g.fillRect(alloc.x, p1.y, (p1.x - alloc.x), p1.height);
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}
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} catch (BadLocationException e) {
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// can't render
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}
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}
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// --- LayerPainter methods ----------------------------
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/**
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* Paints a portion of a highlight.
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*
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* @param g the graphics context
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* @param offs0 the starting model offset >= 0
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* @param offs1 the ending model offset >= offs1
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* @param bounds the bounding box of the view, which is not
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* necessarily the region to paint.
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* @param c the editor
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* @param view View painting for
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* @return region drawing occurred in
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*/
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public Shape paintLayer(Graphics g, int offs0, int offs1,
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Shape bounds, JTextComponent c, View view) {
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Color color = getColor();
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if (color == null) {
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g.setColor(c.getSelectionColor());
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}
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else {
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g.setColor(color);
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}
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boolean firstIsDot = false;
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boolean secondIsDot = false;
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if (c.isEditable()) {
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int dot = c.getCaretPosition();
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firstIsDot = (offs0 == dot);
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secondIsDot = (offs1 == dot);
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}
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if (offs0 == view.getStartOffset() &&
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offs1 == view.getEndOffset()) {
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// Contained in view, can just use bounds.
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Rectangle alloc;
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if (bounds instanceof Rectangle) {
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alloc = (Rectangle)bounds;
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}
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else {
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alloc = bounds.getBounds();
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}
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if (firstIsDot && alloc.width > 0) {
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g.fillRect(alloc.x + 1, alloc.y, alloc.width - 1,
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alloc.height);
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}
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else if (secondIsDot && alloc.width > 0) {
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g.fillRect(alloc.x, alloc.y, alloc.width - 1,
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alloc.height);
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}
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else {
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g.fillRect(alloc.x, alloc.y, alloc.width, alloc.height);
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}
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return alloc;
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}
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else {
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// Should only render part of View.
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try {
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// --- determine locations ---
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Shape shape = view.modelToView(offs0, Position.Bias.Forward,
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offs1,Position.Bias.Backward,
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bounds);
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Rectangle r = (shape instanceof Rectangle) ?
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(Rectangle)shape : shape.getBounds();
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if (firstIsDot && r.width > 0) {
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g.fillRect(r.x + 1, r.y, r.width - 1, r.height);
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}
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else if (secondIsDot && r.width > 0) {
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g.fillRect(r.x, r.y, r.width - 1, r.height);
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}
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else {
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g.fillRect(r.x, r.y, r.width, r.height);
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}
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return r;
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} catch (BadLocationException e) {
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// can't render
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}
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}
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// Only if exception
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return null;
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}
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}
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}
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