尝试制作一个包含 40 列或字符的文本控制台
trying to make a text console with 40 columns or characters
我正在扩展 MultiAutoCompleteTextView 并将字体设置为此字体
Unicode font
这是我声明的 xml
<jacs.apps.jacs.CustomViews.Console
android:id="@+id/auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:dropDownAnchor="@id/content_frame"
android:dropDownHeight="100dp"
android:layout_weight="1"
android:gravity="bottom"
android:inputType="textMultiLine|textNoSuggestions"
android:fontFamily="@font/unifont"
android:imeOptions="actionDone"
android:scrollbars="vertical"
android:scrollHorizontally="false"
android:singleLine="false"
android:typeface="monospace"
/>
这是我的 class
class Console : AppCompatMultiAutoCompleteTextView {
private var mCharHeight = 0
private var h: Int = 0
private var mIsSearchEnabled = true
protected val heightVisible: Int
get() {
val rect = Rect()
getWindowVisibleDisplayFrame(rect)
return rect.bottom - rect.top
}
constructor(context: Context) : super(context) {}
constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {}
constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {}
private fun refitText(text: String, textWidth: Int) {
val mTestPaint = Paint()
mTestPaint.set(this.paint)
if (textWidth <= 0)
return
val targetWidth = textWidth - this.paddingLeft - this.paddingRight
var hi = 100f
var lo = 2f
val threshold = 0.5f // How close we have to be
mTestPaint.set(this.paint)
while (hi - lo > threshold) {
val size = (hi + lo) / 2
mTestPaint.textSize = size
if (mTestPaint.measureText(text) >= targetWidth)
hi = size // too big
else
lo = size // too small
}
// Use lo so that we undershoot rather than overshoot
this.setTextSize(TypedValue.COMPLEX_UNIT_PX, lo)
Log.d("baseline", "textsize: $textSize")
}
override fun onDraw(canvas: Canvas) {
super.onDraw(canvas)
}
override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec)
val parentWidth = MeasureSpec.getSize(widthMeasureSpec)
val height = measuredHeight
refitText("mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm", parentWidth)
this.setMeasuredDimension(parentWidth, height)
}
override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
super.onSizeChanged(w, h, oldw, oldh)
onDropDownChangeSize(w, h)
}
protected fun onDropDownChangeSize(w: Int, h: Int) {
val rect = Rect()
getWindowVisibleDisplayFrame(rect)
//Logger.debug(TAG, "onDropdownChangeSize: " + rect);
// 1/2 width of screen
dropDownWidth = (w * 0.5f).toInt()
// 0.5 height of screen
//setDropDownHeight((int) (h * 1f));
dropDownHeight = 300
this.h = h
Log.d("suggestions", "h : $h")
//change position
onPopupChangePosition()
}
fun setSearchEnabledTrue() {
mIsSearchEnabled = true
setSearchEnabled(true)
}
fun setSearchEnabled(isEnabled: Boolean) {
mIsSearchEnabled = isEnabled
}
override fun performFiltering(text: CharSequence, keyCode: Int) {
if (mIsSearchEnabled) {
super.performFiltering(text, keyCode)
}
}
override fun onCreateInputConnection(outAttrs: EditorInfo): InputConnection {
val conn = super.onCreateInputConnection(outAttrs)
outAttrs.imeOptions = outAttrs.imeOptions and EditorInfo.IME_FLAG_NO_ENTER_ACTION.inv()
return conn
}
override fun showDropDown() {
if (mIsSearchEnabled) {
onPopupChangePosition()
super.showDropDown()
}
}
protected fun invalidateCharHeight() {
mCharHeight = Math.ceil(paint.fontSpacing.toDouble()).toInt()
mCharHeight = paint.measureText("M").toInt()
}
protected fun onPopupChangePosition() {
try {
val layout = layout
invalidateCharHeight()
if (layout != null) {
val pos = selectionStart
val line = layout.getLineForOffset(pos)
val baseline = layout.getLineBaseline(line)
val ascent = layout.getLineAscent(line)
val bounds = Rect()
val textPaint = paint
val sample = "A"
textPaint.getTextBounds(sample, 0, sample.length, bounds)
val width = bounds.width() / sample.length
val x = layout.getPrimaryHorizontal(pos)
val y = (baseline + ascent).toFloat()
val offsetHorizontal = x.toInt() + getWidth()
dropDownHorizontalOffset = offsetHorizontal
val heightVisible = heightVisible
val offsetVertical = (y + mCharHeight - scrollY).toInt()
val tmp = -h + offsetVertical + dropDownHeight + mCharHeight
//if (tmp < heightVisible) {
//tmp = -h + ((offsetVertical*2 / (mCharHeight)) * (mCharHeight / 2))+(mCharHeight/2);
dropDownVerticalOffset = tmp
Log.d("suggestions", "tmp : $tmp")
//((Activity)(mContext)).setTitle("ov :"+offsetVertical +" ch "+mCharHeight+" tmp"+tmp +"h "+h+"p:"+pos);
// } else {
// tmp = offsetVertical - getDropDownHeight() - mCharHeight;
// setDropDownVerticalOffset(tmp);
// ((Activity)(mContext)).setTitle(" 2 tmp :"+tmp);
// }
// int pos = getSelectionStart();
// int line = layout.getLineForOffset(pos);
// int baseline = layout.getLineBaseline(line);
// int ascent = layout.getLineAscent(line);
//
// float x = layout.getPrimaryHorizontal(pos);
// float y = baseline + ascent;
//
// int offsetHorizontal = (int) x + mGutterWidth;
// setDropDownHorizontalOffset(offsetHorizontal);
//
// // int heightVisible = getHeightVisible();
// int offsetVertical = (int) ((y + mCharHeight) - getScrollY());
//
// int tmp = offsetVertical + getDropDownHeight() + mCharHeight;
//// if (tmp < heightVisible) {
// tmp = -(offsetVertical + mCharHeight) + ((offsetVertical / mCharHeight) * (mCharHeight / 2));
// setDropDownVerticalOffset(tmp);
//// } else {
//// tmp = offsetVertical - getDropDownHeight() - mCharHeight;
//// setDropDownVerticalOffset(tmp);
//// }
}
} catch (e: Exception) {
e.printStackTrace()
}
}
companion object {
private val MINIMAL_HEIGHT = 100
}
}
我试图让每台设备的视图宽度为 40 个字符，它可以在一堆不同的设备上工作，但是当我 运行 它在分辨率为 720X1560 的模拟器上时，它让每行 41 个字符所需的 40 个。我正在尝试找到一种方法来调整字体大小，以便每行有 40 个字符。
编辑
放置 android:paddingRight="35dp" 似乎可以解决问题，尽管我想确定我也不能使用换行符，因为我已经将它们用于一种特殊的解析
感谢您的宝贵时间
我修改了refitText方法如下：
private fun refitText(columns: Int, textWidth: Int) {
val mTestPaint = Paint()
mTestPaint.set(this.paint)
if (textWidth <= 0)
return
val targetWidth = textWidth - this.paddingLeft - this.paddingRight
val maxTextSize = 1000000f
mTestPaint.textSize = maxTextSize
val maxCharWidth = mTestPaint.measureText("m")
var size = targetWidth * maxTextSize / (maxCharWidth * columns)
do {
mTestPaint.textSize = size
val realCharWidth = mTestPaint.measureText("m")
val requiredPadding = targetWidth - realCharWidth * columns;
if (requiredPadding >= 0) {
this.setPadding(this.paddingLeft + requiredPadding.toInt() / 2, this.paddingTop, this.paddingRight + requiredPadding.toInt() / 2, this.paddingBottom)
break
}
size *= 1 - (Math.abs(requiredPadding) / targetWidth)
} while (requiredPadding < 0)
this.setTextSize(TypedValue.COMPLEX_UNIT_PX, size)
Log.d("baseline", "textsize: $textSize")
}
字符宽度必须是像素的正整数，因为不可能在显示器上打开一半像素并关闭另一半像素。
假设您计算出的字体大小可以在 720 像素宽度的显示器中呈现 39 个字符。这意味着每个字符的宽度为 18 像素（720/39=18）。另一方面，要呈现 40 个字符，您必须减小字体大小。在这种情况下，减小字体大小后，最大字符宽度可以达到 17 像素。现在前39个字符将显示在663像素（39*17=663）上，还有57个空像素（720-663=57）足以再渲染3个字符（57/17=3 ) 在那一行。在这种情况下，您需要另一个限制。所以你应该添加一些动态计算的填充来控制一行中的字符数。
我正在扩展 MultiAutoCompleteTextView 并将字体设置为此字体 Unicode font
这是我声明的 xml
<jacs.apps.jacs.CustomViews.Console
android:id="@+id/auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:dropDownAnchor="@id/content_frame"
android:dropDownHeight="100dp"
android:layout_weight="1"
android:gravity="bottom"
android:inputType="textMultiLine|textNoSuggestions"
android:fontFamily="@font/unifont"
android:imeOptions="actionDone"
android:scrollbars="vertical"
android:scrollHorizontally="false"
android:singleLine="false"
android:typeface="monospace"
/>
这是我的 class
class Console : AppCompatMultiAutoCompleteTextView {
private var mCharHeight = 0
private var h: Int = 0
private var mIsSearchEnabled = true
protected val heightVisible: Int
get() {
val rect = Rect()
getWindowVisibleDisplayFrame(rect)
return rect.bottom - rect.top
}
constructor(context: Context) : super(context) {}
constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {}
constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {}
private fun refitText(text: String, textWidth: Int) {
val mTestPaint = Paint()
mTestPaint.set(this.paint)
if (textWidth <= 0)
return
val targetWidth = textWidth - this.paddingLeft - this.paddingRight
var hi = 100f
var lo = 2f
val threshold = 0.5f // How close we have to be
mTestPaint.set(this.paint)
while (hi - lo > threshold) {
val size = (hi + lo) / 2
mTestPaint.textSize = size
if (mTestPaint.measureText(text) >= targetWidth)
hi = size // too big
else
lo = size // too small
}
// Use lo so that we undershoot rather than overshoot
this.setTextSize(TypedValue.COMPLEX_UNIT_PX, lo)
Log.d("baseline", "textsize: $textSize")
}
override fun onDraw(canvas: Canvas) {
super.onDraw(canvas)
}
override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec)
val parentWidth = MeasureSpec.getSize(widthMeasureSpec)
val height = measuredHeight
refitText("mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm", parentWidth)
this.setMeasuredDimension(parentWidth, height)
}
override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
super.onSizeChanged(w, h, oldw, oldh)
onDropDownChangeSize(w, h)
}
protected fun onDropDownChangeSize(w: Int, h: Int) {
val rect = Rect()
getWindowVisibleDisplayFrame(rect)
//Logger.debug(TAG, "onDropdownChangeSize: " + rect);
// 1/2 width of screen
dropDownWidth = (w * 0.5f).toInt()
// 0.5 height of screen
//setDropDownHeight((int) (h * 1f));
dropDownHeight = 300
this.h = h
Log.d("suggestions", "h : $h")
//change position
onPopupChangePosition()
}
fun setSearchEnabledTrue() {
mIsSearchEnabled = true
setSearchEnabled(true)
}
fun setSearchEnabled(isEnabled: Boolean) {
mIsSearchEnabled = isEnabled
}
override fun performFiltering(text: CharSequence, keyCode: Int) {
if (mIsSearchEnabled) {
super.performFiltering(text, keyCode)
}
}
override fun onCreateInputConnection(outAttrs: EditorInfo): InputConnection {
val conn = super.onCreateInputConnection(outAttrs)
outAttrs.imeOptions = outAttrs.imeOptions and EditorInfo.IME_FLAG_NO_ENTER_ACTION.inv()
return conn
}
override fun showDropDown() {
if (mIsSearchEnabled) {
onPopupChangePosition()
super.showDropDown()
}
}
protected fun invalidateCharHeight() {
mCharHeight = Math.ceil(paint.fontSpacing.toDouble()).toInt()
mCharHeight = paint.measureText("M").toInt()
}
protected fun onPopupChangePosition() {
try {
val layout = layout
invalidateCharHeight()
if (layout != null) {
val pos = selectionStart
val line = layout.getLineForOffset(pos)
val baseline = layout.getLineBaseline(line)
val ascent = layout.getLineAscent(line)
val bounds = Rect()
val textPaint = paint
val sample = "A"
textPaint.getTextBounds(sample, 0, sample.length, bounds)
val width = bounds.width() / sample.length
val x = layout.getPrimaryHorizontal(pos)
val y = (baseline + ascent).toFloat()
val offsetHorizontal = x.toInt() + getWidth()
dropDownHorizontalOffset = offsetHorizontal
val heightVisible = heightVisible
val offsetVertical = (y + mCharHeight - scrollY).toInt()
val tmp = -h + offsetVertical + dropDownHeight + mCharHeight
//if (tmp < heightVisible) {
//tmp = -h + ((offsetVertical*2 / (mCharHeight)) * (mCharHeight / 2))+(mCharHeight/2);
dropDownVerticalOffset = tmp
Log.d("suggestions", "tmp : $tmp")
//((Activity)(mContext)).setTitle("ov :"+offsetVertical +" ch "+mCharHeight+" tmp"+tmp +"h "+h+"p:"+pos);
// } else {
// tmp = offsetVertical - getDropDownHeight() - mCharHeight;
// setDropDownVerticalOffset(tmp);
// ((Activity)(mContext)).setTitle(" 2 tmp :"+tmp);
// }
// int pos = getSelectionStart();
// int line = layout.getLineForOffset(pos);
// int baseline = layout.getLineBaseline(line);
// int ascent = layout.getLineAscent(line);
//
// float x = layout.getPrimaryHorizontal(pos);
// float y = baseline + ascent;
//
// int offsetHorizontal = (int) x + mGutterWidth;
// setDropDownHorizontalOffset(offsetHorizontal);
//
// // int heightVisible = getHeightVisible();
// int offsetVertical = (int) ((y + mCharHeight) - getScrollY());
//
// int tmp = offsetVertical + getDropDownHeight() + mCharHeight;
//// if (tmp < heightVisible) {
// tmp = -(offsetVertical + mCharHeight) + ((offsetVertical / mCharHeight) * (mCharHeight / 2));
// setDropDownVerticalOffset(tmp);
//// } else {
//// tmp = offsetVertical - getDropDownHeight() - mCharHeight;
//// setDropDownVerticalOffset(tmp);
//// }
}
} catch (e: Exception) {
e.printStackTrace()
}
}
companion object {
private val MINIMAL_HEIGHT = 100
}
}
我试图让每台设备的视图宽度为 40 个字符，它可以在一堆不同的设备上工作，但是当我 运行 它在分辨率为 720X1560 的模拟器上时，它让每行 41 个字符所需的 40 个。我正在尝试找到一种方法来调整字体大小，以便每行有 40 个字符。
编辑
放置 android:paddingRight="35dp" 似乎可以解决问题，尽管我想确定我也不能使用换行符，因为我已经将它们用于一种特殊的解析
感谢您的宝贵时间
我修改了refitText方法如下：
private fun refitText(columns: Int, textWidth: Int) {
val mTestPaint = Paint()
mTestPaint.set(this.paint)
if (textWidth <= 0)
return
val targetWidth = textWidth - this.paddingLeft - this.paddingRight
val maxTextSize = 1000000f
mTestPaint.textSize = maxTextSize
val maxCharWidth = mTestPaint.measureText("m")
var size = targetWidth * maxTextSize / (maxCharWidth * columns)
do {
mTestPaint.textSize = size
val realCharWidth = mTestPaint.measureText("m")
val requiredPadding = targetWidth - realCharWidth * columns;
if (requiredPadding >= 0) {
this.setPadding(this.paddingLeft + requiredPadding.toInt() / 2, this.paddingTop, this.paddingRight + requiredPadding.toInt() / 2, this.paddingBottom)
break
}
size *= 1 - (Math.abs(requiredPadding) / targetWidth)
} while (requiredPadding < 0)
this.setTextSize(TypedValue.COMPLEX_UNIT_PX, size)
Log.d("baseline", "textsize: $textSize")
}
字符宽度必须是像素的正整数，因为不可能在显示器上打开一半像素并关闭另一半像素。 假设您计算出的字体大小可以在 720 像素宽度的显示器中呈现 39 个字符。这意味着每个字符的宽度为 18 像素（720/39=18）。另一方面，要呈现 40 个字符，您必须减小字体大小。在这种情况下，减小字体大小后，最大字符宽度可以达到 17 像素。现在前39个字符将显示在663像素（39*17=663）上，还有57个空像素（720-663=57）足以再渲染3个字符（57/17=3 ) 在那一行。在这种情况下，您需要另一个限制。所以你应该添加一些动态计算的填充来控制一行中的字符数。