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18 package org.apache.batik.gvt.flow;
19
20 import java.awt.font.FontRenderContext  ;
21 import java.awt.font.TextAttribute ;
22 import java.util.Iterator ;
23 import java.util.List ;
24 import java.util.Map ;
25
26 import org.apache.batik.gvt.font.FontFamilyResolver;
27 import org.apache.batik.gvt.font.GVTFont;
28 import org.apache.batik.gvt.font.GVTFontFamily;
29 import org.apache.batik.gvt.font.GVTLineMetrics;
30 import org.apache.batik.gvt.font.UnresolvedFontFamily;
31
32 public class BlockInfo {
33 public final static int ALIGN_START = 0;
34 public final static int ALIGN_MIDDLE = 1;
35 public final static int ALIGN_END = 2;
36 public final static int ALIGN_FULL = 3;
37
38 protected float top;
39 protected float right;
40 protected float bottom;
41 protected float left;
42
43 protected float indent;
44
45 protected int alignment;
46
47 protected float lineHeight;
48 protected List fontFamilyList;
49 protected Map fontAttrs;
50 protected float ascent=-1;
51 protected float descent=-1;
52
53 protected boolean flowRegionBreak;
54
55
56 public BlockInfo(float top, float right, float bottom, float left,
57 float indent, int alignment, float lineHeight,
58 List fontFamilyList, Map fontAttrs,
59 boolean flowRegionBreak) {
60 this.top = top;
61 this.right = right;
62 this.bottom = bottom;
63 this.left = left;
64
65 this.indent = indent;
66
67 this.alignment = alignment;
68
69 this.lineHeight = lineHeight;
70 this.fontFamilyList = fontFamilyList;
71 this.fontAttrs = fontAttrs;
72
73 this.flowRegionBreak = flowRegionBreak;
74 }
75
76 public BlockInfo(float margin, int alignment) {
77 setMargin(margin);
78 this.indent = 0;
79 this.alignment = alignment;
80 this.flowRegionBreak = false;
81 }
82
83 public void setMargin(float margin) {
84 this.top = margin;
85 this.right = margin;
86 this.bottom = margin;
87 this.left = margin;
88 }
89
90 public void initLineInfo(FontRenderContext frc) {
91 float fontSize = 12;
92 Float fsFloat = (Float )fontAttrs.get(TextAttribute.SIZE);
93 if (fsFloat != null)
94 fontSize = fsFloat.floatValue();
95
96 Iterator i = fontFamilyList.iterator();
97 while (i.hasNext()) {
98 GVTFontFamily fontFamily = (GVTFontFamily)i.next();
99 if (fontFamily instanceof UnresolvedFontFamily) {
100 fontFamily = FontFamilyResolver.resolve
101 ((UnresolvedFontFamily)fontFamily);
102 }
103 if (fontFamily == null) continue;
104
105
106 GVTFont font = fontFamily.deriveFont(fontSize, fontAttrs);
107 GVTLineMetrics lm = font.getLineMetrics("", frc);
108 this.ascent = lm.getAscent();
109 this.descent = lm.getDescent();
110 break;
111 }
112 if (ascent == -1) {
113 ascent = fontSize * .8f;
114 descent = fontSize * .2f;
115 }
116 }
117
118 public float getTopMargin() { return top; }
119 public float getRightMargin() { return right; }
120 public float getBottomMargin() { return bottom; }
121 public float getLeftMargin() { return left; }
122
123 public float getIndent() { return indent; }
124
125 public int getTextAlignment() { return alignment; }
126
127
128 public float getLineHeight() { return lineHeight; }
129 public List getFontFamilyList() { return fontFamilyList; }
130 public Map getFontAttrs() { return fontAttrs; }
131 public float getAscent() { return ascent; }
132 public float getDescent() { return descent; }
133
134 public boolean isFlowRegionBreak() { return flowRegionBreak; }
135
136 }
137 |
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