优化

app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt

@@ -34,6 +34,7 @@ import io.legado.app.utils.postEvent
 import io.legado.app.utils.spToPx
 import io.legado.app.utils.splitNotBlank
 import io.legado.app.utils.textHeight
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.CoroutineScope
 import splitties.init.appCtx
 import java.util.LinkedList
@@ -1001,7 +1002,10 @@ object ChapterProvider {
             }
         }
 
-        if (viewWidth > 0 && viewHeight > 0) {
+        if (viewWidth <= 0 || viewHeight <= 0) {
+            return
+        }
+
         paddingLeft = ReadBookConfig.paddingLeft.dpToPx()
         paddingTop = ReadBookConfig.paddingTop.dpToPx()
         paddingRight = ReadBookConfig.paddingRight.dpToPx()
@@ -1015,14 +1019,23 @@ object ChapterProvider {
         visibleHeight = viewHeight - paddingTop - paddingBottom
         visibleRight = viewWidth - paddingRight
         visibleBottom = paddingTop + visibleHeight
-        }
 
+        if (paddingLeft >= visibleRight || paddingTop >= visibleBottom) {
+            appCtx.toastOnUi("边距设置过大，请重新设置")
+            visibleRect.set(
+                0f,
+                0f,
+                viewWidth.toFloat(),
+                viewHeight.toFloat()
+            )
+        } else {
             visibleRect.set(
                 paddingLeft.toFloat(),
                 paddingTop.toFloat(),
                 visibleRight.toFloat(),
                 visibleBottom.toFloat()
             )
+        }
 
     }