├── fixed-spans-sample
├── assets
│ └── fonts
│ │ ├── moonflowerfont.ttf
│ │ └── font_readme.txt
├── res
│ ├── drawable-xhdpi
│ │ └── ic_launcher.png
│ ├── drawable-xxhdpi
│ │ └── ic_launcher.png
│ ├── drawable-xxxhdpi
│ │ └── ic_launcher.png
│ ├── values
│ │ └── strings.xml
│ └── layout
│ │ └── main.xml
├── AndroidManifest.xml
├── pom.xml
└── src
│ └── com
│ └── example
│ └── fixedspans
│ └── DemoActivity.java
├── .gitignore
├── fixed-spans
├── AndroidManifest.xml
├── res
│ └── values
│ │ └── attrs.xml
├── pom.xml
└── src
│ └── com
│ └── chrisrenke
│ └── fixedspans
│ ├── JustifyingTextWatcher.java
│ ├── MonospaceSpan.java
│ ├── ShadowedCrossFadeSpan.java
│ ├── TabularSpan.java
│ ├── JustifyingTextView.java
│ └── JustifySpan.java
├── README.md
├── pom.xml
└── LICENSE.txt
/fixed-spans-sample/assets/fonts/moonflowerfont.ttf:
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https://raw.githubusercontent.com/ChrisRenke/FixedSpans/HEAD/fixed-spans-sample/assets/fonts/moonflowerfont.ttf
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/fixed-spans-sample/res/drawable-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/ChrisRenke/FixedSpans/HEAD/fixed-spans-sample/res/drawable-xhdpi/ic_launcher.png
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/fixed-spans-sample/res/drawable-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/ChrisRenke/FixedSpans/HEAD/fixed-spans-sample/res/drawable-xxhdpi/ic_launcher.png
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/fixed-spans-sample/res/drawable-xxxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/ChrisRenke/FixedSpans/HEAD/fixed-spans-sample/res/drawable-xxxhdpi/ic_launcher.png
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/.gitignore:
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1 | # Eclipse
2 | .classpath
3 | .project
4 | .settings/
5 |
6 | # Intellij
7 | .idea/
8 | *.iml
9 | *.iws
10 |
11 | # Mac
12 | .DS_Store
13 |
14 | # Maven
15 | log/
16 | target/
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/fixed-spans/AndroidManifest.xml:
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1 |
2 |
6 |
7 |
8 |
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/README.md:
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1 | MonospaceSpan & TabularSpan
2 | ===========================
3 |
4 | Two simple spans to format any font in a monospace or tabular appearance. See [this little writeup](http://chrisrenke.com/spans/) for a thorough breakdown.
5 |
6 | 
7 |
8 | 
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/fixed-spans/res/values/attrs.xml:
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12 |
13 |
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/fixed-spans-sample/assets/fonts/font_readme.txt:
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1 | FONT BY DENISE BENTULAN (c) 2013
2 | http://deathmunkey.deviantart.com
3 | http://www.dafont.com/denise-bentulan.d2156
4 | http://douxiegirl.com
5 |
6 | -----------------------------------------------------------------------------------------
7 |
8 | Free for personal use ONLY.
9 | For commercial use, please email the designer at dnn.bntln@yahoo.com or contact@douxiegirl.com
10 |
11 | -----------------------------------------------------------------------------------------
12 |
13 | PayPal donations are highly appreciated!
14 | these help me in a way through college.
15 | you may send them to my PayPal account, dnn.bntln@yahoo.com.
16 |
17 | thank you.
18 |
19 | -----------------------------------------------------------------------------------------
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/fixed-spans-sample/AndroidManifest.xml:
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1 |
2 |
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7 |
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12 |
13 |
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15 |
16 |
17 |
18 |
19 |
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/fixed-spans/pom.xml:
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1 |
2 |
5 | 4.0.0
6 |
7 |
8 | com.chrisrenke
9 | fixed-spans-parent
10 | 1.0-SNAPSHOT
11 |
12 |
13 |
14 | fixed-spans
15 | FixedSpans
16 | apklib
17 |
18 |
19 | 4.1.1.4
20 |
21 |
22 |
23 |
24 | com.google.android
25 | android
26 | ${platform.version}
27 | provided
28 |
29 |
30 |
31 |
32 |
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/fixed-spans-sample/res/values/strings.xml:
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1 |
2 |
3 | Fixed Spans
4 |
5 | Here\'s fixed spaced.
6 | Based on \'W\' or \'M\'
7 | Here\'s relative spaced.
8 | So\'s this one
9 |
10 | $29,011.11
11 | $51.78
12 | (555) 777-5555
13 | (111) 111-1111
14 | 192.168.1.1
15 |
16 | Actionbar title here
17 | Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
18 |
19 |
20 |
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/fixed-spans-sample/pom.xml:
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1 |
2 |
5 | 4.0.0
6 |
7 |
8 | com.chrisrenke
9 | fixed-spans-parent
10 | 1.0-SNAPSHOT
11 |
12 |
13 |
14 | fixed-spans-sample
15 | FixedSpansSample
16 | apk
17 |
18 |
19 | UTF-8
20 | 4.1.1.4
21 | 3.6.0
22 |
23 |
24 |
25 |
26 |
27 | com.chrisrenke
28 | fixed-spans-parent
29 | ${project.version}
30 |
31 |
32 |
33 | com.google.android
34 | android
35 | ${platform.version}
36 | provided
37 |
38 |
39 |
40 |
41 |
42 | com.jayway.maven.plugins.android.generation2
43 | android-maven-plugin
44 | true
45 |
46 |
47 |
48 | org.apache.maven.plugins
49 | maven-compiler-plugin
50 |
51 |
52 |
53 | org.apache.maven.plugins
54 | maven-checkstyle-plugin
55 |
56 |
57 |
58 |
59 |
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/pom.xml:
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1 |
2 |
5 | 4.0.0
6 |
7 | com.chrisrenke
8 | fixed-spans-parent
9 | 1.0-SNAPSHOT
10 | pom
11 |
12 | FixedSpan (Parent)
13 | MonospaceSpan and TabularSpan
14 |
15 |
16 | fixed-spans
17 | fixed-spans-sample
18 |
19 |
20 |
21 | UTF-8
22 | 4.1.1.4
23 | 3.6.0
24 |
25 |
26 |
27 |
28 | com.google.android
29 | android
30 | ${platform.version}
31 | provided
32 |
33 |
34 |
35 |
36 | ${project.artifactId}
37 |
38 |
39 |
40 | com.jayway.maven.plugins.android.generation2
41 | android-maven-plugin
42 | ${android.plugin.version}
43 | true
44 |
45 |
46 |
47 |
48 |
49 | com.jayway.maven.plugins.android.generation2
50 | android-maven-plugin
51 |
52 |
53 | /Users/chrisrenke/Development/sdk/
54 | 17
55 |
56 |
57 |
58 |
59 |
60 |
61 |
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/fixed-spans/src/com/chrisrenke/fixedspans/JustifyingTextWatcher.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.chrisrenke.fixedspans;
18 |
19 | import android.text.Editable;
20 | import android.text.TextWatcher;
21 | import android.widget.TextView;
22 |
23 | import static com.chrisrenke.fixedspans.JustifySpan.Mode;
24 | import static com.chrisrenke.fixedspans.JustifySpan.Mode.ALL_CHARACTERS;
25 | import static com.chrisrenke.fixedspans.JustifySpan.Mode.WHITESPACE_ONLY;
26 | import static com.chrisrenke.fixedspans.JustifySpan.justify;
27 |
28 | public class JustifyingTextWatcher implements TextWatcher {
29 |
30 | public static JustifyingTextWatcher buildJustifier(TextView view, boolean justifyLastLine,
31 | float whitespaceWeight) {
32 | return new JustifyingTextWatcher(view, justifyLastLine, whitespaceWeight, ALL_CHARACTERS);
33 | }
34 |
35 | public static JustifyingTextWatcher buildJustifier(TextView view, boolean justifyLastLine) {
36 | return new JustifyingTextWatcher(view, justifyLastLine, -1f, WHITESPACE_ONLY);
37 | }
38 |
39 | private final TextView view;
40 | private final float whitespaceWeight;
41 | private final boolean justifyLastLine;
42 | private final Mode mode;
43 |
44 | private boolean ignoreNextPass;
45 |
46 | private JustifyingTextWatcher(TextView view, boolean justifyLastLine, float whitespaceWeight,
47 | Mode mode) {
48 | this.view = view;
49 | this.whitespaceWeight = whitespaceWeight;
50 | this.justifyLastLine = justifyLastLine;
51 | this.mode = mode;
52 | }
53 |
54 | @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {
55 | }
56 |
57 | @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
58 | }
59 |
60 | @Override public void afterTextChanged(Editable s) {
61 | if (ignoreNextPass || s.toString().length() == 0) {
62 | ignoreNextPass = false;
63 | return;
64 | }
65 | ignoreNextPass = true;
66 | justify(view, justifyLastLine, whitespaceWeight, mode);
67 | }
68 | }
69 |
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/fixed-spans/src/com/chrisrenke/fixedspans/MonospaceSpan.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.chrisrenke.fixedspans;
18 |
19 | import android.graphics.Canvas;
20 | import android.graphics.Paint;
21 | import android.text.style.ReplacementSpan;
22 |
23 | import static java.lang.Math.ceil;
24 |
25 | /** A {@link ReplacementSpan} that monospaces single-line text. */
26 | public class MonospaceSpan extends ReplacementSpan {
27 |
28 | private static final String REFERENCE_CHARACTERS = "MW";
29 |
30 | private final String relativeCharacters;
31 |
32 | /**
33 | * Set the {@code relativeMonospace} flag to true to monospace based on the widest character
34 | * in the content string; false will base the monospace on the widest width of 'M' or 'W'.
35 | */
36 | public MonospaceSpan(boolean relativeMonospace) {
37 | this.relativeCharacters = relativeMonospace ? null : REFERENCE_CHARACTERS;
38 | }
39 |
40 | /** Use the widest character from {@code relativeCharacters} to determine monospace width. */
41 | public MonospaceSpan(String relativeCharacters) {
42 | this.relativeCharacters = relativeCharacters;
43 | }
44 |
45 | public MonospaceSpan() {
46 | this.relativeCharacters = REFERENCE_CHARACTERS;
47 | }
48 |
49 | @Override
50 | public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) {
51 | if (fm != null) paint.getFontMetricsInt(fm);
52 | return (int) ceil((end - start) * getMonoWidth(paint, text.subSequence(start, end)));
53 | }
54 |
55 | @Override
56 | public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y,
57 | int bottom, Paint paint) {
58 | CharSequence actualText = text.subSequence(start, end);
59 | float monowidth = getMonoWidth(paint, actualText);
60 | for (int i = 0; i < actualText.length(); i++) {
61 | float textWidth = paint.measureText(actualText, i, i + 1);
62 | float halfFreeSpace = (textWidth - monowidth) / 2f;
63 | canvas.drawText(actualText, i, i + 1, x + (monowidth * i) - halfFreeSpace, y, paint);
64 | }
65 | }
66 |
67 | private float getMonoWidth(Paint paint, CharSequence text) {
68 | text = relativeCharacters == null ? text : relativeCharacters;
69 | float maxWidth = 0;
70 | for (int i = 0; i < text.length(); i++) {
71 | maxWidth = Math.max(paint.measureText(text, i, i + 1), maxWidth);
72 | }
73 | return maxWidth;
74 | }
75 | }
76 |
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/fixed-spans/src/com/chrisrenke/fixedspans/ShadowedCrossFadeSpan.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.chrisrenke.fixedspans;
18 |
19 | import android.graphics.Color;
20 | import android.text.TextPaint;
21 | import android.text.style.CharacterStyle;
22 |
23 | import static android.graphics.Color.argb;
24 | import static android.graphics.Color.blue;
25 | import static android.graphics.Color.green;
26 | import static android.graphics.Color.red;
27 |
28 | public class ShadowedCrossFadeSpan extends CharacterStyle {
29 |
30 | private final int initialTextColor;
31 | private final int endTextColor;
32 | private final int initialShadowColor;
33 | private final int endShadowColor;
34 | private final int initialShadowOpacity;
35 | private final int endShadowOpacity;
36 | private final int shadowOffsetX;
37 | private final int shadowOffsetY;
38 | private final int shadowRadius;
39 |
40 | private int currentColor;
41 | private int currentShadowColor;
42 | private int currentShadowOpacity;
43 |
44 | public ShadowedCrossFadeSpan(int initialTextColor, int endTextColor, int shadowColor,
45 | int initialShadowOpacity, int endShadowOpacity, int shadowOffsetX, int shadowOffsetY,
46 | int shadowRadius) {
47 | this(initialTextColor, endTextColor, shadowColor, shadowColor, initialShadowOpacity,
48 | endShadowOpacity, shadowOffsetX, shadowOffsetY, shadowRadius);
49 | }
50 |
51 | public ShadowedCrossFadeSpan(int initialTextColor, int endTextColor, int initialShadowColor,
52 | int endShadowColor, int initialShadowOpacity, int endShadowOpacity, int shadowOffsetX,
53 | int shadowOffsetY, int shadowRadius) {
54 | this.initialTextColor = initialTextColor;
55 | this.endTextColor = endTextColor;
56 | this.initialShadowColor = initialShadowColor;
57 | this.endShadowColor = endShadowColor;
58 | this.initialShadowOpacity = initialShadowOpacity;
59 | this.endShadowOpacity = endShadowOpacity;
60 | this.shadowOffsetX = shadowOffsetX;
61 | this.shadowOffsetY = shadowOffsetY;
62 | this.shadowRadius = shadowRadius;
63 |
64 | // Set the span to the initial state.
65 | setParameter(0);
66 | }
67 |
68 | @Override public void updateDrawState(TextPaint tp) {
69 | tp.setColor(currentColor);
70 | tp.setShadowLayer(shadowRadius, shadowOffsetX, shadowOffsetY, argb(currentShadowOpacity, //
71 | red(currentShadowColor), green(currentShadowColor), blue(currentShadowColor)));
72 | }
73 |
74 | public void setParameter(float t) {
75 | currentShadowOpacity = param(initialShadowOpacity, endShadowOpacity, t);
76 | currentShadowColor = Color.rgb(param(red(initialShadowColor), red(endShadowColor), t), //
77 | param(green(initialShadowColor), green(endShadowColor), t), //
78 | param(blue(initialShadowColor), blue(endShadowColor), t));
79 | currentColor = Color.rgb(param(red(initialTextColor), red(endTextColor), t), //
80 | param(green(initialTextColor), green(endTextColor), t), //
81 | param(blue(initialTextColor), blue(endTextColor), t));
82 | }
83 |
84 | private static int param(int min, int max, float t) {
85 | return (int) ((max - min) * t) + min;
86 | }
87 | }
88 |
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/fixed-spans/src/com/chrisrenke/fixedspans/TabularSpan.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.chrisrenke.fixedspans;
18 |
19 | import android.graphics.Canvas;
20 | import android.graphics.Paint;
21 | import android.text.style.ReplacementSpan;
22 |
23 | /**
24 | * Class to format spans of currencies with all numerals being the same width and all delimiters
25 | * being the same width (distinct from the numeral width). Other characters are their normal width.
26 | */
27 | public class TabularSpan extends ReplacementSpan {
28 | private static final String DEFAULT_DELIMITER_CHARACTERS = ",.";
29 | private static final String DEFAULT_NUMERAL_CHARACTERS = "0123456789";
30 |
31 | private final String delimiters;
32 | private final String numerals;
33 |
34 | public TabularSpan() {
35 | this.delimiters = DEFAULT_DELIMITER_CHARACTERS;
36 | this.numerals = DEFAULT_NUMERAL_CHARACTERS;
37 | }
38 |
39 | public TabularSpan(String delimiters, String numerals) {
40 | this.delimiters = delimiters;
41 | this.numerals = numerals;
42 | }
43 |
44 | @Override
45 | public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) {
46 | if (fm != null) paint.getFontMetricsInt(fm);
47 |
48 | CharSequence actualText = text.subSequence(start, end);
49 | float numberWidth = getMaxCharacterWidth(paint, numerals);
50 | float delimiterWidth = getMaxCharacterWidth(paint, delimiters);
51 | float totalWidth = 0;
52 |
53 | for (int i = 0; i < actualText.length(); i++) {
54 | CharSequence character = actualText.subSequence(i, i + 1);
55 | if (delimiters.contains(character)) {
56 | totalWidth += delimiterWidth;
57 | } else if (numerals.contains(character)) {
58 | totalWidth += numberWidth;
59 | } else {
60 | totalWidth += paint.measureText(character, 0, 1);
61 | }
62 | }
63 | return (int) Math.ceil(totalWidth);
64 | }
65 |
66 | @Override
67 | public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y,
68 | int bottom, Paint paint) {
69 | CharSequence actualText = text.subSequence(start, end);
70 | float numberWidth = getMaxCharacterWidth(paint, numerals);
71 | float delimiterWidth = getMaxCharacterWidth(paint, delimiters);
72 |
73 | for (int i = 0; i < actualText.length(); i++) {
74 | CharSequence character = actualText.subSequence(i, i + 1);
75 | float charWidth = paint.measureText(actualText, i, i + 1);
76 | float monoWidth;
77 | if (delimiters.contains(character)) {
78 | monoWidth = delimiterWidth;
79 | } else if (numerals.contains(character)) {
80 | monoWidth = numberWidth;
81 | } else {
82 | monoWidth = charWidth;
83 | }
84 | float halfFreeSpace = (monoWidth - charWidth) / 2f;
85 | canvas.drawText(actualText, i, i + 1, x + halfFreeSpace, y, paint);
86 | x += monoWidth;
87 | }
88 | }
89 |
90 | private static float getMaxCharacterWidth(Paint paint, CharSequence characters) {
91 | float maxWidth = 0;
92 | for (int i = 0; i < characters.length(); i++) {
93 | maxWidth = Math.max(paint.measureText(characters, i, i + 1), maxWidth);
94 | }
95 | return maxWidth;
96 | }
97 | }
98 |
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/fixed-spans/src/com/chrisrenke/fixedspans/JustifyingTextView.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.chrisrenke.fixedspans;
18 |
19 | import android.content.Context;
20 | import android.content.res.TypedArray;
21 | import android.util.AttributeSet;
22 | import android.widget.TextView;
23 |
24 | import static com.chrisrenke.fixedspans.JustifySpan.Mode;
25 | import static com.chrisrenke.fixedspans.JustifySpan.Mode.WHITESPACE_ONLY;
26 | import static com.chrisrenke.fixedspans.JustifySpan.justify;
27 | import static com.example.fixedspans.R.styleable;
28 |
29 | /** Thin extension of {@link TextView} that automatically justifies its text. */
30 | public class JustifyingTextView extends TextView {
31 |
32 | private static final Mode DEF_MODE = WHITESPACE_ONLY;
33 | private static final boolean DEF_LAST_LINE = false;
34 | private static final float DEF_WEIGHT = 2f;
35 |
36 | private Mode mode;
37 | private boolean justifyLastLine;
38 | private float whitespaceWeight;
39 |
40 | public JustifyingTextView(Context context) {
41 | this(context, null);
42 | }
43 |
44 | public JustifyingTextView(Context context, AttributeSet attrs) {
45 | this(context, attrs, android.R.attr.textViewStyle);
46 | }
47 |
48 | public JustifyingTextView(Context context, AttributeSet attrs, int defStyle) {
49 | super(context, attrs, defStyle);
50 | TypedArray a = context.obtainStyledAttributes(attrs, styleable.JustifyingTextView, defStyle, 0);
51 | whitespaceWeight = getFloat(a, styleable.JustifyingTextView_whitespaceWeight, DEF_WEIGHT);
52 | mode = getEnum(a, styleable.JustifyingTextView_justifyMode, Mode.values(), DEF_MODE);
53 | justifyLastLine = getBoolean(a, styleable.JustifyingTextView_justifyLastLine, DEF_LAST_LINE);
54 | a.recycle();
55 | justify(this, justifyLastLine, whitespaceWeight, mode);
56 | }
57 |
58 | @Override
59 | protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
60 | super.onTextChanged(text, start, lengthBefore, lengthAfter);
61 | justify(this, justifyLastLine, whitespaceWeight, mode);
62 | }
63 |
64 | @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) {
65 | super.onSizeChanged(w, h, oldw, oldh);
66 | justify(this, justifyLastLine, whitespaceWeight, mode);
67 | }
68 |
69 | @Override public void setTextSize(float size) {
70 | super.setTextSize(size);
71 | justify(this, justifyLastLine, whitespaceWeight, mode);
72 | }
73 |
74 | @Override public void setTextSize(int unit, float size) {
75 | super.setTextSize(unit, size);
76 | justify(this, justifyLastLine, whitespaceWeight, mode);
77 | }
78 |
79 | @Override public void setTextAppearance(Context context, int resid) {
80 | super.setTextAppearance(context, resid);
81 | justify(this, justifyLastLine, whitespaceWeight, mode);
82 | }
83 |
84 | private static > E getEnum(TypedArray attributes, int styleableIndex,
85 | E[] values, E defValue) {
86 | int index = attributes.getInteger(styleableIndex, -1);
87 | if (index < 0) return defValue;
88 | return values[index];
89 | }
90 |
91 | private static boolean getBoolean(TypedArray attributes, int styleableIndex, boolean defValue) {
92 | return attributes.getBoolean(styleableIndex, defValue);
93 | }
94 |
95 | private static float getFloat(TypedArray attributes, int styleableIndex, float defValue) {
96 | return attributes.getFloat(styleableIndex, defValue);
97 | }
98 | }
99 |
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/fixed-spans-sample/src/com/example/fixedspans/DemoActivity.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.example.fixedspans;
18 |
19 | import android.app.ActionBar;
20 | import android.app.Activity;
21 | import android.content.Context;
22 | import android.graphics.Paint;
23 | import android.graphics.Typeface;
24 | import android.os.Bundle;
25 | import android.text.SpannableString;
26 | import android.text.TextPaint;
27 | import android.text.style.CharacterStyle;
28 | import android.text.style.TypefaceSpan;
29 | import android.widget.SeekBar;
30 | import android.widget.TextView;
31 | import com.chrisrenke.fixedspans.MonospaceSpan;
32 | import com.chrisrenke.fixedspans.ShadowedCrossFadeSpan;
33 | import com.chrisrenke.fixedspans.TabularSpan;
34 |
35 | import static android.graphics.Color.BLACK;
36 | import static android.graphics.Color.WHITE;
37 |
38 | public class DemoActivity extends Activity {
39 |
40 | @Override
41 | public void onCreate(Bundle savedInstanceState) {
42 | super.onCreate(savedInstanceState);
43 | setContentView(com.example.fixedspans.R.layout.main);
44 |
45 | ActionBar actionBar = getActionBar();
46 | SpannableString title = new SpannableString(getResources().getText(R.string.app_name));
47 | title.setSpan(new MonospaceSpan(), 0, title.length(), 0);
48 | actionBar.setTitle(title);
49 |
50 | span(R.id.mono_0, new MonospaceSpan());
51 | span(R.id.mono_1, new MonospaceSpan());
52 | span(R.id.mono_2, new MonospaceSpan(true));
53 | span(R.id.mono_3, new MonospaceSpan(true));
54 |
55 | span(R.id.tabular_0, new MoonFlowerSpan(this));
56 | span(R.id.tabular_0, new TabularSpan());
57 | span(R.id.tabular_1, new MoonFlowerSpan(this));
58 | span(R.id.tabular_1, new TabularSpan());
59 | span(R.id.tabular_2, new MoonFlowerSpan(this));
60 | span(R.id.tabular_2, new TabularSpan(" ()-", "0123456789"));
61 | span(R.id.tabular_3, new MoonFlowerSpan(this));
62 | span(R.id.tabular_3, new TabularSpan(" ()-", "0123456789"));
63 | span(R.id.tabular_4, new MoonFlowerSpan(this));
64 | span(R.id.tabular_4, new TabularSpan());
65 |
66 | span(R.id.normal_0, new MoonFlowerSpan(this));
67 | span(R.id.normal_1, new MoonFlowerSpan(this));
68 | span(R.id.normal_2, new MoonFlowerSpan(this));
69 | span(R.id.normal_3, new MoonFlowerSpan(this));
70 | span(R.id.normal_4, new MoonFlowerSpan(this));
71 |
72 | SeekBar seek = (SeekBar) findViewById(R.id.seek_bar);
73 | final ShadowedCrossFadeSpan span =
74 | new ShadowedCrossFadeSpan(WHITE, BLACK, BLACK, 200, 0, 0, 2, 6);
75 | final TextView fadetext = (TextView) findViewById(R.id.fade_0);
76 | seek.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
77 | @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
78 | span.setParameter((float) progress / (float) seekBar.getMax());
79 | SpannableString spannableString = new SpannableString(fadetext.getText().toString());
80 | spannableString.setSpan(span, 0, spannableString.length(), 0);
81 | fadetext.setText(spannableString);
82 | }
83 |
84 | @Override public void onStartTrackingTouch(SeekBar seekBar) {
85 | }
86 |
87 | @Override public void onStopTrackingTouch(SeekBar seekBar) {
88 | }
89 | });
90 | span(R.id.fade_0, span);
91 | }
92 |
93 | private void span(int id, CharacterStyle span) {
94 | TextView view = (TextView) findViewById(id);
95 | SpannableString spannableString = new SpannableString(view.getText());
96 | spannableString.setSpan(span, 0, spannableString.length(), 0);
97 | view.setText(spannableString);
98 | }
99 |
100 | public class MoonFlowerSpan extends TypefaceSpan {
101 |
102 | private static final String FONT_FAMILY = "sans-serif";
103 | private final Context context;
104 |
105 | MoonFlowerSpan(Context context) {
106 | super(FONT_FAMILY);
107 | this.context = context;
108 | }
109 |
110 | @Override public void updateDrawState(TextPaint p) {
111 | applyCustomTypeface(p);
112 | }
113 |
114 | @Override public void updateMeasureState(TextPaint p) {
115 | applyCustomTypeface(p);
116 | }
117 |
118 | private void applyCustomTypeface(Paint paint) {
119 | paint.setTypeface(Typeface.createFromAsset(context.getAssets(), "fonts/moonflowerfont.ttf"));
120 | }
121 | }
122 | }
123 |
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/fixed-spans/src/com/chrisrenke/fixedspans/JustifySpan.java:
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1 | /*
2 | * Copyright 2014 Chris Renke
3 | *
4 | * Licensed under the Apache License, Version 2.0 (the "License");
5 | * you may not use this file except in compliance with the License.
6 | * You may obtain a copy of the License at
7 | *
8 | * http://www.apache.org/licenses/LICENSE-2.0
9 | *
10 | * Unless required by applicable law or agreed to in writing, software
11 | * distributed under the License is distributed on an "AS IS" BASIS,
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | * See the License for the specific language governing permissions and
14 | * limitations under the License.
15 | */
16 |
17 | package com.chrisrenke.fixedspans;
18 |
19 | import android.graphics.Canvas;
20 | import android.graphics.Color;
21 | import android.graphics.Paint;
22 | import android.text.Layout;
23 | import android.text.SpannableString;
24 | import android.text.SpannableStringBuilder;
25 | import android.text.TextPaint;
26 | import android.text.style.ReplacementSpan;
27 | import android.view.ViewTreeObserver;
28 | import android.widget.TextView;
29 |
30 | import static com.chrisrenke.fixedspans.JustifySpan.Mode.ALL_CHARACTERS;
31 | import static com.chrisrenke.fixedspans.JustifySpan.Mode.WHITESPACE_ONLY;
32 | import static java.lang.Character.isWhitespace;
33 |
34 | /**
35 | * Justifies a line of text relative to the given width (assumed to be the width of the view).
36 | * If using outside of a singleline context, use {@link JustifySpan#justify(TextView,
37 | * boolean, float)} or {@link JustifySpan#justify(android.widget.TextView, boolean)} to
38 | * handle all the hard work for you.
39 | */
40 | public class JustifySpan extends ReplacementSpan {
41 |
42 | /** Justifies the given {@code textView} with weighted all character justification. */
43 | public static void justify(final TextView textView, final boolean justifyLastLine,
44 | final float whitespaceWeight) {
45 | justify(textView, justifyLastLine, whitespaceWeight, ALL_CHARACTERS);
46 | }
47 |
48 | /** Justifies the given {@code textView} with whitespace justification. */
49 | public static void justify(final TextView textView, final boolean justifyLastLine) {
50 | justify(textView, justifyLastLine, 1f, ALL_CHARACTERS);
51 | }
52 |
53 | public static enum Mode {WHITESPACE_ONLY, ALL_CHARACTERS}
54 |
55 | private final float lineWidth;
56 | private final float whitespaceWeight;
57 |
58 | public JustifySpan(float lineWidth) {
59 | this(lineWidth, -1);
60 | }
61 |
62 | public JustifySpan(float lineWidth, float whitespaceWeight) {
63 | this.lineWidth = lineWidth;
64 | this.whitespaceWeight = whitespaceWeight;
65 | }
66 |
67 | /** Since this span justifies text, it will always take the full line width. */
68 | @Override
69 | public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) {
70 | return (int) lineWidth;
71 | }
72 |
73 | @Override
74 | public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y,
75 | int bottom, Paint paint) {
76 | CharSequence actualText = text.subSequence(start, end);
77 |
78 | // Prune trailing whitespace characters from line
79 | if (Character.isWhitespace(actualText.charAt(actualText.length() - 1))) {
80 | actualText = actualText.subSequence(0, actualText.length() - 1);
81 | }
82 |
83 | float textWidth = paint.measureText(actualText, 0, actualText.length());
84 | float differenceWidth = lineWidth - textWidth;
85 |
86 | // If there's no available space, draw the text as usual.
87 | if (differenceWidth <= 0) {
88 | canvas.drawText(text, start, end, x, y, paint);
89 | return;
90 | }
91 |
92 | int whitespaceCharacters = 0;
93 | for (int i = 0; i < actualText.length(); i++) {
94 | if (isWhitespace(actualText.charAt(i))) whitespaceCharacters++;
95 | }
96 |
97 | if (whitespaceWeight > 0) {
98 | drawTextOmniSpacing(canvas, text, start, end, x, y, paint, actualText, differenceWidth,
99 | whitespaceCharacters);
100 | } else {
101 | drawTextWhitespace(canvas, text, start, end, x, y, paint, actualText, differenceWidth,
102 | whitespaceCharacters);
103 | }
104 | }
105 |
106 | /**
107 | * Draws the given sequence of text onto the canvas with additional width given to whitespace
108 | * characters; non-whitespace characters will be drawn normally.
109 | */
110 | private void drawTextWhitespace(Canvas canvas, CharSequence text, int start, int end, float x,
111 | int y, Paint paint, CharSequence actualText, float differenceWidth,
112 | int whitespaceCharacters) {
113 |
114 | ((TextPaint) paint).bgColor = Color.RED;
115 | float addPerWhitespace = differenceWidth / (float) whitespaceCharacters;
116 |
117 | for (int i = 0; i < actualText.length(); i++) {
118 | float characterWidth = paint.measureText(actualText, i, i + 1);
119 | canvas.drawText(actualText, i, i + 1, x, y, paint);
120 | x += characterWidth;
121 | if (isWhitespace(actualText.charAt(i))) x += addPerWhitespace;
122 | }
123 | }
124 |
125 | /**
126 | * Draws the given sequence of text onto the canvas with additional spacing placed around every
127 | * character, with more or less space given to whitespace characters based on the strength of
128 | * this span's {@code whitespaceWeight}.
129 | */
130 | private void drawTextOmniSpacing(Canvas canvas, CharSequence text, int start, int end, float x,
131 | int y, Paint paint, CharSequence actualText, float differenceWidth,
132 | int whitespaceCharacters) {
133 | int nonWhitespaceCharacters = actualText.length() - whitespaceCharacters;
134 |
135 | float addPerCharacter =
136 | differenceWidth / ((whitespaceCharacters * whitespaceWeight) + nonWhitespaceCharacters);
137 | float halfAddPerCharacter = addPerCharacter / 2f;
138 |
139 | for (int i = 0; i < actualText.length(); i++) {
140 | float characterWidth = paint.measureText(actualText, i, i + 1);
141 | float characterPadding = isWhitespace(actualText.charAt(i)) //
142 | ? halfAddPerCharacter * whitespaceWeight //
143 | : halfAddPerCharacter;
144 |
145 | x += characterPadding;
146 | canvas.drawText(actualText, i, i + 1, x, y, paint);
147 | x += characterPadding + characterWidth;
148 | }
149 | }
150 |
151 | /** Internal method to be started from the two sister justify() methods or package members. */
152 | static void justify(final TextView textView, final boolean justifyLastLine,
153 | final float whitespaceWeight, final Mode mode) {
154 | ViewTreeObserver vto = textView.getViewTreeObserver();
155 | vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
156 | public void onGlobalLayout() {
157 | ViewTreeObserver obs = textView.getViewTreeObserver();
158 | obs.removeGlobalOnLayoutListener(this);
159 | doJustify(textView, justifyLastLine, whitespaceWeight, mode);
160 | }
161 | });
162 | }
163 |
164 | private static void doJustify(TextView textView, boolean justifyLastLine, float whitespaceWeight,
165 | Mode mode) {
166 | Layout layout = textView.getLayout();
167 |
168 | // If layout is null, we can't do anything, abort abort abort.
169 | if (layout == null) return;
170 |
171 | int lines = layout.getLineCount();
172 | SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder();
173 | for (int line = 0; line < lines; line++) {
174 | CharSequence lineText =
175 | layout.getText().subSequence(layout.getLineStart(line), layout.getLineEnd(line));
176 |
177 | // If justifyLastLine is false, don't format the last line at all
178 | if (lines > 1 && line == lines - 1 && !justifyLastLine) {
179 | spannableStringBuilder.append(lineText);
180 | } else {
181 | SpannableString spannableString = new SpannableString(lineText);
182 | int width = textView.getWidth() - textView.getPaddingLeft() - textView.getPaddingRight();
183 | JustifySpan span = mode == WHITESPACE_ONLY //
184 | ? new JustifySpan(width) //
185 | : new JustifySpan(width, whitespaceWeight);
186 | spannableString.setSpan(span, 0, spannableString.length(), 0);
187 | spannableStringBuilder.append(spannableString);
188 | }
189 |
190 | // Add a manual newline or bad stuff happens as a result of replacement span.
191 | spannableStringBuilder.append(line != lines - 1 ? "\n" : "");
192 | }
193 |
194 | // Update textView with new charsequence
195 | textView.setText(spannableStringBuilder.subSequence(0, spannableStringBuilder.length()));
196 | }
197 | }
198 |
--------------------------------------------------------------------------------
/LICENSE.txt:
--------------------------------------------------------------------------------
1 |
2 | Apache License
3 | Version 2.0, January 2004
4 | http://www.apache.org/licenses/
5 |
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7 |
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153 |
154 | 8. Limitation of Liability. In no event and under no legal theory,
155 | whether in tort (including negligence), contract, or otherwise,
156 | unless required by applicable law (such as deliberate and grossly
157 | negligent acts) or agreed to in writing, shall any Contributor be
158 | liable to You for damages, including any direct, indirect, special,
159 | incidental, or consequential damages of any character arising as a
160 | result of this License or out of the use or inability to use the
161 | Work (including but not limited to damages for loss of goodwill,
162 | work stoppage, computer failure or malfunction, or any and all
163 | other commercial damages or losses), even if such Contributor
164 | has been advised of the possibility of such damages.
165 |
166 | 9. Accepting Warranty or Additional Liability. While redistributing
167 | the Work or Derivative Works thereof, You may choose to offer,
168 | and charge a fee for, acceptance of support, warranty, indemnity,
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176 |
177 | END OF TERMS AND CONDITIONS
178 |
179 | Copyright 2014 Chris Renke
180 |
181 | Licensed under the Apache License, Version 2.0 (the "License");
182 | you may not use this file except in compliance with the License.
183 | You may obtain a copy of the License at
184 |
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