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Code Issues Packages Projects Releases Wiki Activity

Added composing sub lists

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M66B
2021-05-06 08:22:04 +02:00
parent de8ad55e58
commit 516b8280ee
7 changed files with 242 additions and 71 deletions
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68
app/src/main/java/eu/faircode/email/BulletSpanEx.java Normal file
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@@ -0,0 +1,68 @@
package eu.faircode.email;
/*
This file is part of FairEmail.
FairEmail is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
FairEmail 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 for more details.
You should have received a copy of the GNU General Public License
along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
Copyright 2018-2021 by Marcel Bokhorst (M66B)
*/
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Build;
import android.text.Layout;
import android.text.style.BulletSpan;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
public class BulletSpanEx extends BulletSpan {
private int indentWidth;
private int level;
public BulletSpanEx(int indentWidth, int gapWidth, int color, int level) {
super(gapWidth, color);
this.indentWidth = indentWidth;
this.level = level;
}
@RequiresApi(api = Build.VERSION_CODES.P)
public BulletSpanEx(int indentWidth, int gapWidth, int color, int bulletRadius, int level) {
super(gapWidth, color, bulletRadius);
this.indentWidth = indentWidth;
this.level = level;
}
int getLevel() {
return this.level;
}
void setLevel(int level) {
this.level = level;
}
@Override
public int getLeadingMargin(boolean first) {
// https://issuetracker.google.com/issues/36956124
// This is called before drawLeadingMargin to justify the text
return indentWidth * level + super.getLeadingMargin(first);
}
@Override
public void drawLeadingMargin(@NonNull Canvas canvas, @NonNull Paint paint, int x, int dir, int top, int baseline, int bottom, @NonNull CharSequence text, int start, int end, boolean first, @Nullable Layout layout) {
super.drawLeadingMargin(canvas, paint, x + indentWidth * level, dir, top, baseline, bottom, text, start, end, first, layout);
}
}

54
app/src/main/java/eu/faircode/email/HtmlEx.java
View File

@@ -40,6 +40,9 @@ import android.text.style.TypefaceSpan;
import android.text.style.URLSpan;
import android.text.style.UnderlineSpan;
import java.util.ArrayList;
import java.util.List;
import static android.text.Html.TO_HTML_PARAGRAPH_LINES_CONSECUTIVE;
public class HtmlEx {
@@ -211,7 +214,8 @@ public class HtmlEx {
private /* static */ void withinBlockquoteIndividual(StringBuilder out, Spanned text, int start,
int end) {
Boolean isInBulletList = null;
List<Boolean> levels = new ArrayList<>();
int next;
for (int i = start; i <= end; i = next) {
next = TextUtils.indexOf(text, '\n', i, end);
@@ -220,14 +224,16 @@ public class HtmlEx {
}
if (next == i) {
if (isInBulletList != null) {
if (levels.size() > 0) {
// Current paragraph is no longer a list item; close the previously opened list
out.append(isInBulletList ? "</ul>\n" : "</ol>\n");
isInBulletList = null;
for (int l = levels.size() - 1; l >= 0; l--)
out.append(levels.get(l) ? "</ul>\n" : "</ol>\n");
levels.clear();
}
if (i != text.length())
out.append("<br>\n");
} else {
int level = 0;
Boolean isBulletListItem = null;
ParagraphStyle[] paragraphStyles = text.getSpans(i, next, ParagraphStyle.class);
for (ParagraphStyle paragraphStyle : paragraphStyles) {
@@ -235,29 +241,34 @@ public class HtmlEx {
if ((spanFlags & Spanned.SPAN_PARAGRAPH) == Spanned.SPAN_PARAGRAPH
&& paragraphStyle instanceof BulletSpan) {
isBulletListItem = !(paragraphStyle instanceof eu.faircode.email.NumberSpan);
if (paragraphStyle instanceof NumberSpan)
level = ((NumberSpan) paragraphStyle).getLevel();
else if (paragraphStyle instanceof BulletSpanEx)
level = ((BulletSpanEx) paragraphStyle).getLevel();
break;
}
}
if (isBulletListItem != null && isInBulletList != null && isBulletListItem != isInBulletList) {
out.append(isInBulletList ? "</ul>\n" : "</ol>\n");
isInBulletList = null;
}
if (isBulletListItem == null)
level = -1;
if (isBulletListItem != null && isInBulletList == null) {
// Current paragraph is the first item in a list
isInBulletList = isBulletListItem;
out.append(isInBulletList ? "<ul" : "<ol")
while (levels.size() > level + 1) {
Boolean bullet = levels.remove(levels.size() - 1);
out.append(bullet ? "</ul>\n" : "</ol>\n");
}
if (level >= 0 &&
levels.size() == level + 1 &&
levels.get(level) != isBulletListItem) {
Boolean bullet = levels.remove(level);
out.append(bullet ? "</ul>\n" : "</ol>\n");
}
while (levels.size() < level + 1) {
levels.add(isBulletListItem);
out.append(isBulletListItem ? "<ul" : "<ol")
.append(getTextStyles(text, i, next, true, false))
.append(">\n");
}
if (isInBulletList != null && isBulletListItem == null) {
// Current paragraph is no longer a list item; close the previously opened list
out.append(isInBulletList ? "</ul>\n" : "</ol>\n");
isInBulletList = null;
}
String tagType = isBulletListItem != null ? "li" : "span";
out.append("<").append(tagType)
.append(getTextDirection(text, i, next))
@@ -272,9 +283,10 @@ public class HtmlEx {
if (isBulletListItem == null)
out.append("<br>\n");
if (next == end && isInBulletList != null) {
out.append(isInBulletList ? "</ul>\n" : "</ol>\n");
isInBulletList = null;
if (next == end && levels.size() > 0) {
for (int l = levels.size() - 1; l >= 0; l--)
out.append(levels.get(l) ? "</ul>\n" : "</ol>\n");
levels.clear();
}
}

59
app/src/main/java/eu/faircode/email/HtmlHelper.java
View File

@@ -43,7 +43,6 @@ import android.text.style.AlignmentSpan;
import android.text.style.BulletSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.ImageSpan;
import android.text.style.LeadingMarginSpan;
import android.text.style.QuoteSpan;
import android.text.style.RelativeSizeSpan;
import android.text.style.ReplacementSpan;
@@ -1915,12 +1914,19 @@ public class HtmlHelper {
for (BulletSpan span : ssb.getSpans(0, ssb.length(), BulletSpan.class)) {
int start = ssb.getSpanStart(span);
ssb.insert(start, "* ");
}
for (NumberSpan span : ssb.getSpans(0, ssb.length(), NumberSpan.class)) {
int start = ssb.getSpanStart(span);
ssb.insert(start, "- ");
if (span instanceof NumberSpan) {
ssb.insert(start, "- ");
int level = ((NumberSpan) span).getLevel();
for (int l = 1; l <= level; l++)
ssb.insert(start, "\t");
} else {
ssb.insert(start, "* ");
if (span instanceof BulletSpanEx) {
int level = ((BulletSpanEx) span).getLevel();
for (int l = 1; l <= level; l++)
ssb.insert(start, "\t");
}
}
}
return ssb.toString();
@@ -2372,23 +2378,32 @@ public class HtmlHelper {
if (ssb.length() == 0 || ssb.charAt(ssb.length() - 1) != '\n')
ssb.append("\n");
int level = 0;
Element type = null;
Element parent = element.parent();
while (parent != null &&
!"ol".equals(parent.tagName()) &&
!"ul".equals(parent.tagName()))
while (parent != null) {
if ("ol".equals(parent.tagName()) || "ul".equals(parent.tagName())) {
level++;
if (type == null)
type = parent;
}
parent = parent.parent();
if (parent == null || "ul".equals(parent.tagName()))
}
if (level > 0)
level--;
if (type == null || "ul".equals(type.tagName())) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P)
setSpan(ssb, new BulletSpan(dp6, colorAccent), start, ssb.length());
setSpan(ssb, new BulletSpanEx(dp24, dp6, colorAccent, level), start, ssb.length());
else
setSpan(ssb, new BulletSpan(dp6, colorAccent, dp3), start, ssb.length());
else {
setSpan(ssb, new BulletSpanEx(dp24, dp6, colorAccent, dp3, level), start, ssb.length());
} else {
// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/ol
int index = 0;
String s = parent.attr("start");
String s = type.attr("start");
if (!TextUtils.isEmpty(s) && TextUtils.isDigitsOnly(s))
index = Integer.parseInt(s) - 1;
for (Node child : parent.childNodes()) {
for (Node child : type.childNodes()) {
if (child instanceof Element &&
child.nodeName().equals(element.tagName())) {
index++;
@@ -2397,8 +2412,9 @@ public class HtmlHelper {
}
}
setSpan(ssb, new NumberSpan(dp6, colorAccent, textSize, index), start, ssb.length());
setSpan(ssb, new NumberSpan(dp24, dp6, colorAccent, textSize, level, index), start, ssb.length());
}
break;
case "pre":
// Signature
@@ -2409,15 +2425,6 @@ public class HtmlHelper {
break;
case "ol":
case "ul":
int llevel = 0;
Element lparent = element.parent();
while (lparent != null) {
if ("ol".equals(lparent.tagName()) || "ul".equals(lparent.tagName()))
llevel++;
lparent = lparent.parent();
}
if (llevel > 0)
setSpan(ssb, new LeadingMarginSpan.Standard(llevel * dp24), start, ssb.length());
break;
case "meta":
// Signature

20
app/src/main/java/eu/faircode/email/NumberSpan.java
View File

@@ -28,29 +28,41 @@ import android.text.TextPaint;
import android.text.style.BulletSpan;
public class NumberSpan extends BulletSpan {
int indentWidth;
private int level;
private int index;
private TextPaint tp;
private String number;
private int margin;
public NumberSpan(int gapWidth, int color, float textSize, int index) {
public NumberSpan(int indentWidth, int gapWidth, int color, float textSize, int level, int index) {
tp = new TextPaint();
tp.setStyle(Paint.Style.FILL);
tp.setColor(color);
tp.setTypeface(Typeface.MONOSPACE);
tp.setTextSize(textSize);
this.indentWidth = indentWidth;
this.level = level;
this.index = index;
number = index + ".";
margin = Math.round(tp.measureText(number) + gapWidth);
margin = Math.round(tp.measureText(number)) + gapWidth;
}
float getTextSize() {
return tp.getTextSize();
}
int getLevel() {
return this.level;
}
void setLevel(int level) {
this.level = level;
}
int getIndex() {
return index;
}
@@ -59,7 +71,7 @@ public class NumberSpan extends BulletSpan {
public int getLeadingMargin(boolean first) {
// https://issuetracker.google.com/issues/36956124
// This is called before drawLeadingMargin to justify the text
return margin;
return indentWidth * level + margin;
}
@Override
@@ -69,7 +81,7 @@ public class NumberSpan extends BulletSpan {
float textSize = tp.getTextSize();
if (textSize > p.getTextSize())
tp.setTextSize(p.getTextSize());
c.drawText(number, x + dir, baseline, tp);
c.drawText(number, x + indentWidth * level, baseline, tp);
tp.setTextSize(textSize);
}
}

104
app/src/main/java/eu/faircode/email/StyleHelper.java
View File

@@ -26,8 +26,6 @@ import android.graphics.Typeface;
import android.os.Build;
import android.text.Editable;
import android.text.Layout;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.AlignmentSpan;
@@ -124,6 +122,16 @@ public class StyleHelper {
smenu.add(R.id.group_style_font, i, 0, fontNames[i]);
smenu.add(R.id.group_style_font, fontNames.length, 0, R.string.title_style_font_default);
int level = -1;
BulletSpan[] spans = edit.getSpans(start, end, BulletSpan.class);
for (BulletSpan span : spans)
if (span instanceof NumberSpan)
level = ((NumberSpan) span).getLevel();
else if (span instanceof BulletSpanEx)
level = ((BulletSpanEx) span).getLevel();
popupMenu.getMenu().findItem(R.id.menu_style_list_increase).setVisible(level >= 0);
popupMenu.getMenu().findItem(R.id.menu_style_list_decrease).setVisible(level > 0);
popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
@@ -136,7 +144,11 @@ public class StyleHelper {
} else if (groupId == R.id.group_style_align) {
return setAlignment(item);
} else if (groupId == R.id.group_style_list) {
return setList(item);
if (item.getItemId() == R.id.menu_style_list_increase ||
item.getItemId() == R.id.menu_style_list_decrease)
return setListLevel(item);
else
return setList(item);
} else if (groupId == R.id.group_style_font) {
return setFont(item);
} else if (groupId == R.id.group_style_blockquote) {
@@ -248,12 +260,38 @@ public class StyleHelper {
return true;
}
private boolean setListLevel(MenuItem item) {
Context context = etBody.getContext();
int add = (item.getItemId() == R.id.menu_style_list_increase ? 1 : -1);
boolean renum = false;
BulletSpan[] spans = edit.getSpans(start, end, BulletSpan.class);
for (BulletSpan span : spans)
if (span instanceof BulletSpanEx) {
BulletSpanEx bs = (BulletSpanEx) span;
bs.setLevel(bs.getLevel() + add);
} else if (span instanceof NumberSpan) {
renum = true;
NumberSpan ns = (NumberSpan) span;
ns.setLevel(ns.getLevel() + add);
}
if (renum)
renumber(edit, false, context);
etBody.setText(edit);
etBody.setSelection(start, end);
return true;
}
private boolean setList(MenuItem item) {
Context context = etBody.getContext();
int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
int dp3 = Helper.dp2pixels(context, 3);
int dp6 = Helper.dp2pixels(context, 6);
int dp24 = Helper.dp2pixels(context, 24);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
int message_zoom = prefs.getInt("message_zoom", 100);
@@ -271,22 +309,28 @@ public class StyleHelper {
int i = s;
int j = s + 1;
int index = 1;
boolean renum = false;
while (j < e) {
if (i > 0 && edit.charAt(i - 1) == '\n' && edit.charAt(j) == '\n') {
Log.i("Insert " + i + "..." + (j + 1) + " size=" + e);
if (item.getItemId() == R.id.menu_style_list_bullets)
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P)
edit.setSpan(new BulletSpan(dp6, colorAccent), i, j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_PARAGRAPH);
edit.setSpan(new BulletSpanEx(dp24, dp6, colorAccent, 0), i, j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_PARAGRAPH);
else
edit.setSpan(new BulletSpan(dp6, colorAccent, dp3), i, j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_PARAGRAPH);
else
edit.setSpan(new NumberSpan(dp6, colorAccent, textSize, index++), i, j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_PARAGRAPH);
edit.setSpan(new BulletSpanEx(dp24, dp6, colorAccent, dp3, 0), i, j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_PARAGRAPH);
else {
renum = true;
edit.setSpan(new NumberSpan(dp24, dp6, colorAccent, textSize, 0, index++), i, j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_PARAGRAPH);
}
i = j + 1;
}
j++;
}
if (renum)
renumber(edit, false, context);
etBody.setText(edit);
etBody.setSelection(s, e);
@@ -472,7 +516,7 @@ public class StyleHelper {
if (end == edit.length())
edit.append("\n"); // workaround Android bug
return new Pair(start, end);
return new Pair<>(start, end);
}
static <T extends ParagraphStyle> T clone(Object span, Class<T> type, Context context) {
@@ -485,16 +529,18 @@ public class StyleHelper {
} else if (NumberSpan.class.isAssignableFrom(type)) {
NumberSpan n = (NumberSpan) span;
int dp6 = Helper.dp2pixels(context, 6);
int dp24 = Helper.dp2pixels(context, 24);
int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
return (T) new NumberSpan(dp6, colorAccent, n.getTextSize(), n.getIndex() + 1);
} else if (BulletSpan.class.isAssignableFrom(type)) {
BulletSpan b = (BulletSpan) span;
return (T) new NumberSpan(dp24, dp6, colorAccent, n.getTextSize(), n.getLevel(), n.getIndex() + 1);
} else if (BulletSpanEx.class.isAssignableFrom(type)) {
BulletSpanEx b = (BulletSpanEx) span;
int dp24 = Helper.dp2pixels(context, 24);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) {
int dp6 = Helper.dp2pixels(context, 6);
int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
return (T) new BulletSpan(dp6, colorAccent);
return (T) new BulletSpanEx(dp24, dp6, colorAccent, b.getLevel());
} else
return (T) new BulletSpan(b.getGapWidth(), b.getColor(), b.getBulletRadius());
return (T) new BulletSpanEx(dp24, b.getGapWidth(), b.getColor(), b.getBulletRadius(), b.getLevel());
} else
throw new IllegalArgumentException(type.getName());
@@ -502,13 +548,14 @@ public class StyleHelper {
static void renumber(Editable text, boolean clean, Context context) {
int dp6 = Helper.dp2pixels(context, 6);
int dp24 = Helper.dp2pixels(context, 24);
int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
Log.i("Renumber clean=" + clean + " text=" + text);
int next;
int index = 1;
int pos = -1;
List<Integer> levels = new ArrayList<>();
for (int i = 0; i < text.length(); i = next) {
next = text.nextSpanTransition(i, text.length(), NumberSpan.class);
Log.i("Bullet span next=" + next);
@@ -525,16 +572,33 @@ public class StyleHelper {
continue;
}
if (span instanceof NumberSpan) {
if (start == pos)
index++;
else
index = 1;
int level;
if (span instanceof NumberSpan)
level = ((NumberSpan) span).getLevel();
else if (span instanceof BulletSpanEx)
level = ((BulletSpanEx) span).getLevel();
else
level = 0;
if (start != pos)
levels.clear();
while (levels.size() > level + 1)
levels.remove(levels.size() - 1);
if (levels.size() == level + 1 && !(span instanceof NumberSpan))
levels.remove(level - 1);
while (levels.size() < level + 1)
levels.add(0);
int index = levels.get(level) + 1;
levels.remove(level);
levels.add(level, index);
if (span instanceof NumberSpan) {
NumberSpan ns = (NumberSpan) span;
if (index != ns.getIndex()) {
NumberSpan clone = new NumberSpan(dp6, colorAccent, ns.getTextSize(), index);
text.removeSpan(span);
// Text size needs measuring
NumberSpan clone = new NumberSpan(dp24, dp6, colorAccent, ns.getTextSize(), level, index);
text.setSpan(clone, start, end, flags);
}

6
app/src/main/res/menu/popup_style.xml
View File

@@ -62,6 +62,12 @@
<item
android:id="@+id/menu_style_list_numbered"
android:title="@string/title_style_list_numbered" />
<item
android:id="@+id/menu_style_list_increase"
android:title="@string/title_style_list_level_increase" />
<item
android:id="@+id/menu_style_list_decrease"
android:title="@string/title_style_list_level_decrease" />
</group>
</menu>
</item>

2
app/src/main/res/values/strings.xml
View File

@@ -1073,6 +1073,8 @@
<string name="title_style_list">List</string>
<string name="title_style_list_bullets">Bullets</string>
<string name="title_style_list_numbered">Numbered</string>
<string name="title_style_list_level_increase">Increase indentation</string>
<string name="title_style_list_level_decrease">Decrease indentation</string>
<string name="title_style_font">Font</string>
<string name="title_style_font_default">Default</string>
<string name="title_style_blockquote">Block quote</string>