Add FixedThumb to fix thumbnail size

app/src/main/java/com/hippo/ehviewer/widget/FixedThumb.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.ehviewer.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import com.hippo.ehviewer.R;
+import com.hippo.widget.LoadImageView;
+
+public class FixedThumb extends LoadImageView {
+
+  private float minAspect;
+  private float maxAspect;
+
+  public FixedThumb(Context context) {
+    super(context);
+    init(context, null, 0, 0);
+  }
+
+  public FixedThumb(Context context, AttributeSet attrs) {
+    super(context, attrs);
+    init(context, attrs, 0, 0);
+  }
+
+  public FixedThumb(Context context, AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+    init(context, attrs, defStyle, 0);
+  }
+
+  private void init(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.FixedThumb, defStyleAttr, defStyleRes);
+    minAspect = a.getFloat(R.styleable.FixedThumb_minAspect, 0.0f);
+    maxAspect = a.getFloat(R.styleable.FixedThumb_maxAspect, 0.0f);
+    a.recycle();
+  }
+
+  public void setFix(float minAspect, float maxAspect) {
+    this.minAspect = minAspect;
+    this.maxAspect = maxAspect;
+  }
+
+  @Override
+  public void onPreSetImageDrawable(Drawable drawable, boolean isTarget) {
+    if (isTarget && drawable != null) {
+      int width = drawable.getIntrinsicWidth();
+      int height = drawable.getIntrinsicHeight();
+      if (width > 0 && height > 0) {
+        float aspect = (float) width / (float) height;
+        if (aspect < maxAspect && aspect > minAspect) {
+          setScaleType(ScaleType.CENTER_CROP);
+          return;
+        }
+      }
+    }
+
+    setScaleType(ScaleType.FIT_CENTER);
+  }
+
+  @Override
+  public void onPreSetImageResource(int resId, boolean isTarget) {
+    setScaleType(ScaleType.FIT_CENTER);
+  }
+}

app/src/main/java/com/hippo/widget/LoadImageView.java

@@ -239,11 +239,13 @@ public class LoadImageView extends FixedAspectImageView implements Unikery<Image
 
     public void load(Drawable drawable) {
         unload();
+        onPreSetImageDrawable(drawable, true);
         setImageDrawable(drawable);
     }
 
     public void load(@DrawableRes int id) {
         unload();
+        onPreSetImageResource(id, true);
         setImageResource(id);
     }
 
@@ -290,6 +292,7 @@ public class LoadImageView extends FixedAspectImageView implements Unikery<Image
             drawable = new PreciselyClipDrawable(drawable, mOffsetX, mOffsetY, mClipWidth, mClipHeight);
         }
 
+        onPreSetImageDrawable(drawable, true);
         if ((source == Conaco.SOURCE_DISK || source == Conaco.SOURCE_NETWORK) && isShown()) {
             Drawable[] layers = new Drawable[2];
             layers[0] = new ColorDrawable(Color.TRANSPARENT);
@@ -308,7 +311,9 @@ public class LoadImageView extends FixedAspectImageView implements Unikery<Image
     public void onFailure() {
         mFailed = true;
         clearDrawable();
-        setImageDrawable(DrawableManager.getVectorDrawable(getContext(), R.drawable.image_failed));
+        Drawable drawable = DrawableManager.getVectorDrawable(getContext(), R.drawable.image_failed);
+        onPreSetImageDrawable(drawable, true);
+        setImageDrawable(drawable);
         if (mRetryType == RETRY_TYPE_CLICK) {
             setOnClickListener(this);
         } else if (mRetryType == RETRY_TYPE_LONG_CLICK) {
@@ -362,4 +367,8 @@ public class LoadImageView extends FixedAspectImageView implements Unikery<Image
         load(mKey, mUrl, mContainer, true);
         return true;
     }
+
+    public void onPreSetImageDrawable(Drawable drawable, boolean isTarget) { }
+
+    public void onPreSetImageResource(int resId, boolean isTarget) { }
 }