From 5d13e30cfc3a1601f0b00d872c6e1b12c97f880a Mon Sep 17 00:00:00 2001
From: Takashi Kawasaki <espresso3389@gmail.com>
Date: Wed, 13 Dec 2023 23:24:44 +0900
Subject: [PATCH] WIP

---
 .../android/app/src/main/AndroidManifest.xml  | 40 ++++++-------------
 lib/src/pdfrx_widgets.dart                    | 10 +++--
 2 files changed, 20 insertions(+), 30 deletions(-)

diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index 77eaa24..257c08a 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -1,33 +1,19 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    <application
-        android:label="pdfrx_example"
-        android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
-        <activity
-            android:name=".MainActivity"
-            android:exported="true"
-            android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-            android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
-            <!-- Specifies an Android theme to apply to this Activity as soon as
+  <uses-permission android:name="android.permission.INTERNET"/>
+  <application android:label="pdfrx_example" android:name="${applicationName}" android:icon="@mipmap/ic_launcher">
+    <activity android:name=".MainActivity" android:exported="true" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize">
+      <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
                  while the Flutter UI initializes. After that, this theme continues
                  to determine the Window background behind the Flutter UI. -->
-            <meta-data
-              android:name="io.flutter.embedding.android.NormalTheme"
-              android:resource="@style/NormalTheme"
-              />
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
-        <!-- Don't delete the meta-data below.
+      <meta-data android:name="io.flutter.embedding.android.NormalTheme" android:resource="@style/NormalTheme" />
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+    </activity>
+    <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
-        <meta-data
-            android:name="flutterEmbedding"
-            android:value="2" />
-    </application>
+    <meta-data android:name="flutterEmbedding" android:value="2" />
+  </application>
 </manifest>
diff --git a/lib/src/pdfrx_widgets.dart b/lib/src/pdfrx_widgets.dart
index 97145fd..37c2e79 100644
--- a/lib/src/pdfrx_widgets.dart
+++ b/lib/src/pdfrx_widgets.dart
@@ -534,11 +534,15 @@ class _PdfViewerState extends State<PdfViewer>
       PdfPage page, Rect intersection, double scale) async {
     final rect = _layout!.pageLayouts[page.pageNumber]!;
     final inPageRect = intersection.translate(-rect.left, -rect.top);
-    final img = await page.render(
+    final width = (inPageRect.width * scale).toInt();
+    final height = (inPageRect.height * scale).toInt();
+    if (width == 0 || height == 0) return;
+
+    final PdfImage img = await page.render(
       x: (inPageRect.left * scale).toInt(),
       y: (inPageRect.top * scale).toInt(),
-      width: (inPageRect.width * scale).toInt(),
-      height: (inPageRect.height * scale).toInt(),
+      width: width,
+      height: height,
       fullWidth: rect.width * scale,
       fullHeight: rect.height * scale,
       backgroundColor: Colors.white,