draw all line when scroll bar is not enable

Author: tranleduy2000

app/src/main/res/layout/list_item_theme.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_marginTop="4dp"
     android:orientation="vertical">
 
@@ -24,16 +24,16 @@
             android:id="@+id/btn_select"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:typeface="monospace"
-            app:srcCompat="@drawable/baseline_check_24"
-            android:text="Select" />
+            android:text="Select"
+            app:srcCompat="@drawable/baseline_check_24" />
 
     </LinearLayout>
 
     <com.duy.ide.editor.view.EditAreaView2
         android:id="@+id/editor_view"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content">
+        android:layout_height="wrap_content"
+        android:typeface="monospace">
 
     </com.duy.ide.editor.view.EditAreaView2>
 </LinearLayout>

libeditor/src/main/java/com/duy/ide/editor/text/LineManager.java

@@ -58,6 +58,11 @@ public int getFirstVisibleVirtualLine() {
             if (layout == null) {
                 return 0;
             }
+            boolean verticalScrollBarEnabled = mEditText.isVerticalScrollBarEnabled();
+            if (!verticalScrollBarEnabled) {
+                return 0;
+            }
+
             int lineCount = layout.getLineCount();
             int line = (int) (mEditText.getScrollY() / ((float) layout.getHeight()) * lineCount);
             line = Math.max(0, Math.min(line, lineCount - 1));
@@ -73,8 +78,13 @@ public int getLastVisibleVirtualLine() {
             if (layout == null) {
                 return 0;
             }
-            mEditText.getGlobalVisibleRect(BOUND);
             int lineCount = mEditText.getLineCount();
+            boolean verticalScrollBarEnabled = mEditText.isVerticalScrollBarEnabled();
+            if (!verticalScrollBarEnabled) {
+                return lineCount - 1;
+            }
+
+            mEditText.getGlobalVisibleRect(BOUND);
             int line = (int) ((mEditText.getScrollY() + BOUND.height()) / ((float) layout.getHeight()) * lineCount);
             line = Math.max(0, Math.min(line, lineCount - 1));
             return line;

libeditor/src/main/java/com/duy/ide/editor/view/EditAreaView2.java

@@ -125,6 +125,7 @@ private void init(Context context) {
     public void setText(CharSequence text, BufferType type) {
         super.setText(text, type);
         mNeedUpdateLineNumber = true;
+        mPreLineCount = -1;
     }
 
     @Override
@@ -153,7 +154,6 @@ public EditorTheme getEditorTheme() {
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);
 
-
         drawLineNumber(canvas);
     }
 
@@ -295,9 +295,10 @@ private void drawLineNumber(Canvas canvas) {
 
         List<TextLineNumber.LineInfo> lines = mLineManager.getTextLineNumber().getLines();
         int x = mLayoutContext.getLineNumberX() + getScrollX();
+        int paddingTop = getPaddingTop();
         Paint paint = mLayoutContext.getGutterForegroundPaint();
         for (TextLineNumber.LineInfo line : lines) {
-            canvas.drawText(line.getText(), x, line.getY(), paint);
+            canvas.drawText(line.getText(), x, line.getY() + paddingTop, paint);
         }
     }
 
@@ -368,7 +369,7 @@ public void setTextSize(int unit, float size) {
     @Override
     protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
         super.onTextChanged(text, start, lengthBefore, lengthAfter);
-        setNeedUpdateLineNumber(true);
+        updateLineNumberCount(start);
     }
 
     /**
@@ -400,7 +401,7 @@ private void updateLayoutContext() {
     private void updateGutterSize() {
         int numberPadding = SysUtils.dpToPixels(getContext(), 2);
 
-        float textWidth = mLayoutContext.getGutterForegroundPaint().measureText(" ");
+        float textWidth = mLayoutContext.getGutterForegroundPaint().measureText("8");
         //plus 1 for some case: log(100) = 2, but we need 3
         double columnCount = Math.ceil(Math.log10(mLineManager.getRealLineCount() + 1)) + 1;
         mLayoutContext.setGutterWidth(((int) (textWidth * columnCount)) + numberPadding * 2/*Left and right*/);
@@ -411,8 +412,4 @@ private void updateGutterSize() {
         setPadding(newPaddingLeft, getPaddingTop(), getPaddingRight(), getPaddingBottom());
     }
 
-    public void setNeedUpdateLineNumber(boolean needUpdateLineNumber) {
-        mNeedUpdateLineNumber = needUpdateLineNumber;
-        mPreLineCount = -1;
-    }
 }