使用进度条控制画布控件缩放

- 移除顶部放大/缩小按钮，改用底部SeekBar进度条控制
- 缩放范围0.1-5.0对应进度条0-100
- 添加setScaleFactor()方法

gallery/build.properties

@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Tue Apr 28 09:48:58 CST 2026
+#Tue Apr 28 09:59:23 CST 2026
 stageCount=7
 libraryProject=
 baseVersion=15.0
 publishVersion=15.0.6
-buildCount=30
+buildCount=33
 baseBetaVersion=15.0.7

gallery/src/main/java/cc/winboll/studio/gallery/CropActivity.java

@@ -10,6 +10,7 @@ import android.provider.MediaStore;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.ScrollView;
+import android.widget.SeekBar;
 import android.widget.Toast;
 import androidx.appcompat.app.AppCompatActivity;
 import cc.winboll.studio.libappbase.LogUtils;
@@ -78,22 +79,22 @@ public class CropActivity extends AppCompatActivity {
         });
         
         zoomContainer = findViewById(R.id.zoom_container);
-        findViewById(R.id.btn_zoom_in).setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (zoomContainer != null) {
-                    zoomContainer.zoomIn();
-                }
-            }
-        });
         
-        findViewById(R.id.btn_zoom_out).setOnClickListener(new View.OnClickListener() {
+        SeekBar seekBarZoom = findViewById(R.id.seekbar_zoom);
+        seekBarZoom.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
             @Override
-            public void onClick(View v) {
-                if (zoomContainer != null) {
-                    zoomContainer.zoomOut();
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                if (zoomContainer != null && fromUser) {
+                    float scale = 0.1f + (progress / 100f) * 4.9f;
+                    zoomContainer.setScaleFactor(scale);
                 }
             }
+            
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {}
+            
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {}
         });
         
         cropCanvasView = findViewById(R.id.crop_canvas_view);

gallery/src/main/java/cc/winboll/studio/gallery/ZoomContainerView.java

@@ -13,7 +13,7 @@ import android.widget.FrameLayout;
 
 public class ZoomContainerView extends FrameLayout {
     private float scaleFactor = 1.0f;
-    private float minScale = 0.5f;
+    private float minScale = 0.1f;
     private float maxScale = 5.0f;
     private static final float ZOOM_STEP = 0.25f;
     
@@ -98,6 +98,12 @@ public class ZoomContainerView extends FrameLayout {
         return scaleFactor;
     }
     
+    public void setScaleFactor(float scale) {
+        scaleFactor = Math.max(minScale, Math.min(scale, maxScale));
+        requestLayout();
+        invalidate();
+    }
+    
     public void resetZoom() {
         scaleFactor = 1.0f;
         invalidate();

gallery/src/main/res/layout/activity_crop.xml

@@ -34,22 +34,6 @@
             android:layout_height="0dp"
             android:layout_weight="1"/>
 
-        <ImageView
-            android:id="@+id/btn_zoom_out"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:padding="12dp"
-            android:src="@drawable/ic_zoom_out"
-            android:background="?attr/selectableItemBackgroundBorderless"/>
-
-        <ImageView
-            android:id="@+id/btn_zoom_in"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:padding="12dp"
-            android:src="@drawable/ic_zoom_in"
-            android:background="?attr/selectableItemBackgroundBorderless"/>
-
         <ImageView
             android:id="@+id/btn_done"
             android:layout_width="48dp"
@@ -84,4 +68,40 @@
 
     </ScrollView>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="56dp"
+        android:layout_gravity="bottom"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:background="@color/colorPrimary"
+        android:paddingHorizontal="16dp"
+        android:layout_marginBottom="0dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="缩小"
+            android:textColor="@android:color/white"
+            android:textSize="12sp"/>
+
+        <SeekBar
+            android:id="@+id/seekbar_zoom"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:min="0"
+            android:max="100"
+            android:progress="50"
+            android:layout_marginHorizontal="8dp"/>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="放大"
+            android:textColor="@android:color/white"
+            android:textSize="12sp"/>
+
+    </LinearLayout>
+
 </FrameLayout>