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1
21
24 package org.lobobrowser.html.renderer;
25
26 import java.awt.*;
27 import java.awt.image.ImageObserver  ;
28
29 import org.lobobrowser.html.domimpl.*;
30 import org.lobobrowser.html.style.HtmlValues;
31
32 class ImgControl extends BaseControl implements ImageListener {
33 private volatile Image image;
34 private String lastSrc;
36
37 public ImgControl(HTMLImageElementImpl modelNode) {
38 super(modelNode);
39 modelNode.addImageListener(this);
41 }
42
43 public void paintComponent(Graphics g) {
44 super.paintComponent(g);
45 Dimension size = this.getSize();
46 Insets insets = this.getInsets();
47 synchronized(this) {}
48 Image image = this.image;
49 if(image != null) {
50 g.drawImage(image,
51 insets.left, insets.top,
52 size.width - insets.left - insets.right,
53 size.height - insets.top - insets.bottom, this);
54 }
55 else {
56 }
58 }
59
60 private int valign = RElement.VALIGN_BASELINE;
61 private Dimension preferredSize;
62 private int declaredWidth;
63 private int declaredHeight;
64
65 public void reset(int availWidth, int availHeight) {
66 HTMLElementImpl element = this.controlElement;
68 int dw = HtmlValues.getOldSyntaxPixelSize(element.getAttribute("width"), availWidth, -1);
69 int dh = HtmlValues.getOldSyntaxPixelSize(element.getAttribute("height"), availHeight, -1);
70 this.declaredWidth = dw;
71 this.declaredHeight = dh;
72 this.preferredSize = this.createPreferredSize(dw, dh);
73 int valign;
74 String alignText = element.getAttribute("align");
75 if(alignText == null) {
76 valign = RElement.VALIGN_BASELINE;
77 }
78 else {
79 alignText = alignText.toLowerCase().trim();
80 if("middle".equals(alignText)) {
81 valign = RElement.VALIGN_MIDDLE;
82 }
83 else if("absmiddle".equals(alignText)) {
84 valign = RElement.VALIGN_ABSMIDDLE;
85 }
86 else if("top".equals(alignText)) {
87 valign = RElement.VALIGN_TOP;
88 }
89 else if("bottom".equals(alignText)) {
90 valign = RElement.VALIGN_BOTTOM;
91 }
92 else if("baseline".equals(alignText)) {
93 valign = RElement.VALIGN_BASELINE;
94 }
95 else if("absbottom".equals(alignText)) {
96 valign = RElement.VALIGN_ABSBOTTOM;
97 }
98 else {
99 valign = RElement.VALIGN_BASELINE;
100 }
101 }
102 this.valign = valign;
103 }
104
105 public int getVAlign() {
106 return this.valign;
107 }
108
109 public Dimension getPreferredSize() {
110 Dimension ps = this.preferredSize;
111 return ps == null ? new Dimension(0, 0) : ps;
112 }
113
114 public Dimension createPreferredSize(int dw, int dh) {
115 Image img = this.image;
116 if(dw == -1) {
117 dw = img == null ? -1 : img.getWidth(this);
118 if(dw == -1) {
119 dw = 0;
120 }
121 }
122 if(dh == -1) {
123 dh = img == null ? -1 : img.getHeight(this);
124 if(dh == -1) {
125 dh = 0;
126 }
127 }
128 return new Dimension(dw, dh);
129 }
130
131 private final boolean checkPreferredSizeChange() {
132 Dimension newPs = this.createPreferredSize(this.declaredWidth, this.declaredHeight);
133 Dimension ps = this.preferredSize;
134 if(ps == null) {
135 return true;
136 }
137 if(ps.width != newPs.width || ps.height != newPs.height) {
138 this.preferredSize = newPs;
139 return true;
140 }
141 else {
142 return false;
143 }
144 }
145
146
168
171 public boolean imageUpdate(Image img, int infoflags, int x, int y, final int w, final int h) {
172 if((infoflags & ImageObserver.ALLBITS) != 0 || (infoflags & ImageObserver.FRAMEBITS) != 0) {
173 EventQueue.invokeLater(new Runnable () {
174 public void run() {
175 if(!checkPreferredSizeChange()) {
176 repaint();
177 }
178 else {
179 ruicontrol.preferredSizeInvalidated();
180 }
181 }
182 });
183 }
184 return true;
185 }
186
187
190 public void imageUpdate(Image img, final int w, final int h) {
191 EventQueue.invokeLater(new Runnable () {
192 public void run() {
193 if(!checkPreferredSizeChange()) {
194 repaint();
195 }
196 else {
197 ruicontrol.preferredSizeInvalidated();
198 }
199 }
200 });
201 }
202
203 public boolean paintSelection(Graphics g, boolean inSelection, RenderableSpot startPoint, RenderableSpot endPoint) {
204 return inSelection;
205 }
206
207 public void imageLoaded(ImageEvent event) {
208 Image image = event.image;
210 this.image = image;
211 int width = image.getWidth(this);
212 int height = image.getHeight(this);
213 if(width != -1 && height != -1) {
214 this.imageUpdate(image, width, height);
215 }
216 }
217
218 public String toString() {
219 return "ImgControl[src=" + this.lastSrc + "]";
220 }
221 }
222 |
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