Remove padding from markdown editor and pre-render preview

This commit is contained in:
William Brawner 2024-05-05 23:06:27 -06:00
parent c7f44e2b81
commit 7ed94aebf4
Signed by: wbrawner
GPG key ID: 8FF12381C6C90D35
2 changed files with 126 additions and 70 deletions

View file

@ -20,7 +20,6 @@ import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.pager.HorizontalPager
import androidx.compose.foundation.pager.rememberPagerState
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.filled.ArrowBack
import androidx.compose.material.icons.filled.Menu
@ -47,10 +46,7 @@ import androidx.compose.material3.Tab
import androidx.compose.material3.TabRow
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.material3.TextField
import androidx.compose.material3.TextFieldDefaults
import androidx.compose.material3.TopAppBar
import androidx.compose.material3.TopAppBarDefaults
import androidx.compose.material3.rememberDrawerState
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
@ -63,17 +59,9 @@ import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalSoftwareKeyboardController
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.text.AnnotatedString
import androidx.compose.ui.text.SpanStyle
import androidx.compose.ui.text.TextRange
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.input.KeyboardCapitalization
import androidx.compose.ui.text.input.TextFieldValue
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.dp
import androidx.core.content.ContextCompat.startActivity
@ -83,7 +71,6 @@ import com.wbrawner.simplemarkdown.EditorState
import com.wbrawner.simplemarkdown.MarkdownViewModel
import com.wbrawner.simplemarkdown.R
import com.wbrawner.simplemarkdown.Route
import com.wbrawner.simplemarkdown.model.Readability
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.isActive
@ -361,6 +348,7 @@ private fun TabbedMarkdownEditor(
}
HorizontalPager(
modifier = Modifier.fillMaxSize(1f), state = pagerState,
beyondBoundsPageCount = 1,
userScrollEnabled = !lockSwiping
) { page ->
val keyboardController = LocalSoftwareKeyboardController.current
@ -384,19 +372,6 @@ private fun TabbedMarkdownEditor(
}
}
private fun String.annotate(enableReadability: Boolean): AnnotatedString {
if (!enableReadability) return AnnotatedString(this)
val readability = Readability(this)
val annotated = AnnotatedString.Builder(this)
for (sentence in readability.sentences()) {
var color = Color.Transparent
if (sentence.syllableCount() > 25) color = Color(229, 232, 42, 100)
if (sentence.syllableCount() > 35) color = Color(193, 66, 66, 100)
annotated.addStyle(SpanStyle(background = color), sentence.start(), sentence.end())
}
return annotated.toAnnotatedString()
}
@Composable
fun MarkdownNavigationDrawer(
navigate: (Route) -> Unit, content: @Composable (drawerState: DrawerState) -> Unit
@ -482,51 +457,8 @@ fun MarkdownTopAppBar(
IconButton(onClick = { onClick() }) {
Icon(imageVector = icon, contentDescription = contentDescription)
}
}, actions = actions ?: {},
scrollBehavior = TopAppBarDefaults.enterAlwaysScrollBehavior()
)
}
@Composable
fun MarkdownTextField(
modifier: Modifier,
reload: Int,
markdown: String,
setMarkdown: (String) -> Unit,
enableReadability: Boolean = false
) {
val (selection, setSelection) = remember { mutableStateOf(TextRange.Zero) }
val (composition, setComposition) = remember { mutableStateOf<TextRange?>(null) }
val (textFieldValue, setTextFieldValue) = remember(reload) {
mutableStateOf(TextFieldValue(markdown.annotate(enableReadability), selection, composition))
}
val setTextFieldAndViewModelValues: (TextFieldValue) -> Unit = {
setSelection(it.selection)
setComposition(it.composition)
setTextFieldValue(it.copy(annotatedString = it.text.annotate(enableReadability)))
setMarkdown(it.text)
}
TextField(
modifier = modifier.imePadding(),
colors = TextFieldDefaults.colors(
focusedContainerColor = MaterialTheme.colorScheme.surface,
unfocusedContainerColor = MaterialTheme.colorScheme.surface,
disabledIndicatorColor = Color.Transparent,
errorIndicatorColor = Color.Transparent,
focusedIndicatorColor = Color.Transparent,
unfocusedIndicatorColor = Color.Transparent
),
value = textFieldValue,
onValueChange = setTextFieldAndViewModelValues,
placeholder = {
Text("Markdown here…")
},
textStyle = TextStyle.Default.copy(
fontFamily = FontFamily.Monospace,
color = MaterialTheme.colorScheme.onSurface
),
keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences)
actions = actions ?: {},
)
}

View file

@ -0,0 +1,124 @@
package com.wbrawner.simplemarkdown.ui
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.imePadding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.text.BasicTextField
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.text.selection.LocalTextSelectionColors
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.material3.TextFieldDefaults
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.SolidColor
import androidx.compose.ui.text.AnnotatedString
import androidx.compose.ui.text.SpanStyle
import androidx.compose.ui.text.TextRange
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.input.KeyboardCapitalization
import androidx.compose.ui.text.input.TextFieldValue
import androidx.compose.ui.text.input.VisualTransformation
import androidx.compose.ui.unit.dp
import com.wbrawner.simplemarkdown.model.Readability
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun MarkdownTextField(
modifier: Modifier = Modifier,
markdown: String,
setMarkdown: (String) -> Unit,
reload: Int = 0,
enableReadability: Boolean = false,
) {
val (selection, setSelection) = remember { mutableStateOf(TextRange.Zero) }
val (composition, setComposition) = remember { mutableStateOf<TextRange?>(null) }
val (textFieldValue, setTextFieldValue) = remember(reload) {
mutableStateOf(TextFieldValue(markdown.annotate(enableReadability), selection, composition))
}
val setTextFieldAndViewModelValues: (TextFieldValue) -> Unit = {
setSelection(it.selection)
setComposition(it.composition)
setTextFieldValue(it.copy(annotatedString = it.text.annotate(enableReadability)))
setMarkdown(it.text)
}
val colors = TextFieldDefaults.colors(
focusedContainerColor = MaterialTheme.colorScheme.surface,
unfocusedContainerColor = MaterialTheme.colorScheme.surface,
disabledIndicatorColor = Color.Transparent,
errorIndicatorColor = Color.Transparent,
focusedIndicatorColor = Color.Transparent,
unfocusedIndicatorColor = Color.Transparent
)
Column(
modifier = modifier
.fillMaxSize()
.imePadding()
.verticalScroll(
rememberScrollState()
)
) {
val interactionSource = remember { MutableInteractionSource() }
val textStyle = TextStyle.Default.copy(
fontFamily = FontFamily.Monospace,
color = MaterialTheme.colorScheme.onSurface
)
CompositionLocalProvider(LocalTextSelectionColors provides colors.textSelectionColors) {
BasicTextField(
value = textFieldValue,
modifier = Modifier.fillMaxSize(),
onValueChange = setTextFieldAndViewModelValues,
enabled = true,
readOnly = false,
textStyle = textStyle,
cursorBrush = SolidColor(colors.cursorColor),
keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences),
keyboardActions = KeyboardActions.Default,
interactionSource = interactionSource,
singleLine = false,
maxLines = Int.MAX_VALUE,
minLines = 1,
decorationBox = @Composable { innerTextField ->
// places leading icon, text field with label and placeholder, trailing icon
TextFieldDefaults.DecorationBox(
value = textFieldValue.text,
visualTransformation = VisualTransformation.None,
innerTextField = innerTextField,
placeholder = {
Text("Markdown here…")
},
singleLine = false,
enabled = true,
interactionSource = interactionSource,
colors = colors,
contentPadding = PaddingValues(8.dp)
)
}
)
}
}
}
private fun String.annotate(enableReadability: Boolean): AnnotatedString {
if (!enableReadability) return AnnotatedString(this)
val readability = Readability(this)
val annotated = AnnotatedString.Builder(this)
for (sentence in readability.sentences()) {
var color = Color.Transparent
if (sentence.syllableCount() > 25) color = Color(229, 232, 42, 100)
if (sentence.syllableCount() > 35) color = Color(193, 66, 66, 100)
annotated.addStyle(SpanStyle(background = color), sentence.start(), sentence.end())
}
return annotated.toAnnotatedString()
}