Lint + max width for wizard

app/src/main/java/org/solovyev/android/calculator/App.java

@@ -41,9 +41,12 @@ import android.support.v7.view.ContextThemeWrapper;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.style.ForegroundColorSpan;
+import android.util.AttributeSet;
 import android.util.DisplayMetrics;
 import android.util.Log;
+import android.util.TypedValue;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.view.ViewGroup;
 import android.view.inputmethod.InputMethodManager;
 import com.squareup.otto.Bus;
@@ -397,7 +400,14 @@ public final class App {
     }
 
     public static int toPixels(@Nonnull DisplayMetrics dm, float dps) {
-        final float scale = dm.density;
+        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dps, dm);
-        return (int) (dps * scale + 0.5f);
+    }
+
+    public static int toPixels(@Nonnull Context context, float dps) {
+        return toPixels(context.getResources().getDisplayMetrics(), dps);
+    }
+
+    public static int toPixels(@Nonnull View view, float dps) {
+        return toPixels(view.getContext(), dps);
     }
 }

app/src/main/java/org/solovyev/android/calculator/widget/CalculatorWidget.java

@@ -50,7 +50,6 @@ import javax.annotation.Nullable;
 import javax.inject.Inject;
 import java.util.EnumMap;
 
-import static android.appwidget.AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT;
 import static android.content.Intent.ACTION_CONFIGURATION_CHANGED;
 import static android.os.Build.VERSION_CODES.JELLY_BEAN;
 import static org.solovyev.android.calculator.App.cast;
@@ -181,7 +180,7 @@ public class CalculatorWidget extends AppWidgetProvider {
             return getDefaultLayout(theme);
         }
 
-        final int widgetMinHeight = App.toPixels(resources.getDisplayMetrics(), options.getInt(OPTION_APPWIDGET_MIN_HEIGHT, 0));
+        final int widgetMinHeight = App.toPixels(resources.getDisplayMetrics(), options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, 0));
         final int lockScreenMinHeight = resources.getDimensionPixelSize(R.dimen.min_expanded_height_lock_screen);
         final boolean expanded = widgetMinHeight >= lockScreenMinHeight;
         if (expanded) {

app/src/main/java/org/solovyev/android/calculator/wizard/WizardFragment.java

@@ -8,12 +8,12 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
-
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.calculator.release.ChooseThemeReleaseNoteFragment;
 import org.solovyev.android.calculator.release.ChooseThemeReleaseNoteStep;
 import org.solovyev.android.calculator.release.ReleaseNoteFragment;
 import org.solovyev.android.calculator.release.ReleaseNoteStep;
+import org.solovyev.android.views.Adjuster;
 import org.solovyev.android.wizard.Wizard;
 import org.solovyev.android.wizard.WizardFlow;
 import org.solovyev.android.wizard.WizardStep;
@@ -21,6 +21,8 @@ import org.solovyev.android.wizard.WizardStep;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
+import static org.solovyev.android.calculator.App.toPixels;
+
 public abstract class WizardFragment extends Fragment implements View.OnClickListener {
 
     @Nullable
@@ -63,6 +65,7 @@ public abstract class WizardFragment extends Fragment implements View.OnClickLis
 
         final ViewGroup content = (ViewGroup) view.findViewById(R.id.wizard_content);
         inflater.inflate(getViewResId(), content, true);
+        Adjuster.maxWidth(content, toPixels(view, 300));
 
         nextButton = (TextView) view.findViewById(R.id.wizard_next);
         if (nextButton != null) {
@@ -118,18 +121,21 @@ public abstract class WizardFragment extends Fragment implements View.OnClickLis
     public void onClick(View v) {
         final int id = v.getId();
         final WizardActivity activity = getWizardActivity();
-        if (id == R.id.wizard_next) {
+        switch (id) {
+            case R.id.wizard_next:
                 if (activity.canGoNext()) {
                     activity.goNext();
                 } else {
                     activity.finishWizard();
                 }
-        } else if (id == R.id.wizard_prev) {
+                break;
+            case R.id.wizard_prev:
                 if (activity.canGoPrev()) {
                     activity.goPrev();
                 } else {
                     activity.finishWizardAbruptly();
                 }
+                break;
         }
     }
 

app/src/main/java/org/solovyev/android/views/Adjuster.java

@@ -1,17 +1,18 @@
 package org.solovyev.android.views;
 
-import static android.graphics.Matrix.MSCALE_Y;
-
 import android.graphics.drawable.Drawable;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v4.view.ViewCompat;
 import android.util.TypedValue;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.ViewTreeObserver;
 import android.widget.ImageView;
 import android.widget.TextView;
 
+import static android.graphics.Matrix.MSCALE_Y;
+
 public class Adjuster {
 
     private static final float[] MATRIX = new float[9];
@@ -41,35 +42,58 @@ public class Adjuster {
     }
 
     public static void adjustImage(@NonNull final ImageView view, final float percentage) {
-        ViewTreeObserver treeObserver = getTreeObserver(view);
+        final ViewTreeObserver treeObserver = getTreeObserver(view);
         if (treeObserver == null) {
             return;
         }
         treeObserver.addOnPreDrawListener(new ImageViewAdjuster(view, percentage));
     }
 
-    private static class TextViewAdjuster implements ViewTreeObserver.OnPreDrawListener {
+    public static void maxWidth(@NonNull View view, int maxWidth) {
-        @NonNull
+        final ViewTreeObserver treeObserver = getTreeObserver(view);
-        private final TextView view;
+        if (treeObserver == null) {
-        private final float percentage;
+            return;
-        private final float minTextSizePxs;
+        }
+        treeObserver.addOnPreDrawListener(new MaxWidthAdjuster(view, maxWidth));
+    }
 
-        public TextViewAdjuster(@NonNull TextView view, float percentage, float minTextSizePxs) {
+    private static abstract class BaseViewAdjuster<V extends View> implements ViewTreeObserver.OnPreDrawListener {
+        @NonNull
+        protected final V view;
+
+        protected BaseViewAdjuster(@NonNull V view) {
             this.view = view;
-            this.percentage = percentage;
-            this.minTextSizePxs = minTextSizePxs;
         }
 
         @Override
-        public boolean onPreDraw() {
+        public final boolean onPreDraw() {
+            final int width = view.getWidth();
             final int height = view.getHeight();
-            if (!ViewCompat.isLaidOut(view) || height <= 0) {
+            if (!ViewCompat.isLaidOut(view) || height <= 0 || width <= 0) {
                 return true;
             }
             final ViewTreeObserver treeObserver = getTreeObserver(view);
             if (treeObserver != null) {
                 treeObserver.removeOnPreDrawListener(this);
             }
+            return adjust(width, height);
+        }
+
+        protected abstract boolean adjust(int width, int height);
+    }
+
+    private static class TextViewAdjuster extends BaseViewAdjuster<TextView> {
+        private final float percentage;
+        private final float minTextSizePxs;
+
+        public TextViewAdjuster(@NonNull TextView view, float percentage, float minTextSizePxs) {
+            super(view);
+            this.percentage = percentage;
+            this.minTextSizePxs = minTextSizePxs;
+        }
+
+        @Override
+        protected boolean adjust(int width, int height) {
             final float oldTextSize = Math.round(view.getTextSize());
             final float newTextSize = Math.max(minTextSizePxs, Math.round(height * percentage));
             if (oldTextSize == newTextSize) {
@@ -80,26 +104,37 @@ public class Adjuster {
         }
     }
 
-    private static class ImageViewAdjuster implements ViewTreeObserver.OnPreDrawListener {
+    private static class MaxWidthAdjuster extends BaseViewAdjuster<View> {
-        @NonNull
+
-        private final ImageView view;
+        private final int maxWidth;
+
+        public MaxWidthAdjuster(@NonNull View view, int maxWidth) {
+            super(view);
+            this.maxWidth = maxWidth;
+        }
+
+        @Override
+        protected boolean adjust(int width, int height) {
+            if (width <= maxWidth) {
+                return true;
+            }
+            final ViewGroup.LayoutParams lp = view.getLayoutParams();
+            lp.width = maxWidth;
+            view.setLayoutParams(lp);
+            return false;
+        }
+    }
+
+    private static class ImageViewAdjuster extends BaseViewAdjuster<ImageView> {
         private final float percentage;
 
         public ImageViewAdjuster(@NonNull ImageView view, float percentage) {
-            this.view = view;
+            super(view);
             this.percentage = percentage;
         }
 
         @Override
-        public boolean onPreDraw() {
+        protected boolean adjust(int width, int height) {
-            final int height = view.getHeight();
-            if (!ViewCompat.isLaidOut(view) || height <= 0) {
-                return true;
-            }
-            final ViewTreeObserver treeObserver = getTreeObserver(view);
-            if (treeObserver != null) {
-                treeObserver.removeOnPreDrawListener(this);
-            }
             final Drawable d = view.getDrawable();
             if (d == null) {
                 return true;

app/src/main/res/layout/fragment_wizard.xml

@@ -1,9 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<LinearLayout
+<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
-    xmlns:a="http://schemas.android.com/apk/res/android"
+    a:layout_width="match_parent"
-    style="@style/WizardFragment"
+    a:layout_height="match_parent"
-    a:orientation="vertical">
+    a:orientation="vertical"
+    a:gravity="center"
+    a:paddingLeft="10dp"
+    a:paddingRight="10dp">
 
     <ScrollView
         a:id="@+id/wizard_content"
@@ -14,6 +17,29 @@
         a:layout_weight="1"
         a:fillViewport="true" />
 
-    <include layout="@layout/fragment_wizard_buttons" />
+    <LinearLayout
+        a:layout_width="wrap_content"
+        a:layout_height="wrap_content"
+        a:layout_gravity="center_horizontal|bottom"
+        a:layout_marginTop="@dimen/control_margin"
+        a:orientation="horizontal">
+
+        <org.solovyev.android.material.MaterialButton
+            a:id="@+id/wizard_prev"
+            style="@style/MaterialButton.Wizard"
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:visibility="gone" />
+
+        <org.solovyev.android.material.MaterialButton
+            a:id="@+id/wizard_next"
+            style="@style/MaterialButton.Wizard"
+            a:layout_width="0dp"
+            a:layout_height="wrap_content"
+            a:layout_weight="1"
+            a:visibility="gone" />
+
+    </LinearLayout>
 
 </LinearLayout>

app/src/main/res/layout/fragment_wizard_buttons.xml

@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<LinearLayout
-    xmlns:a="http://schemas.android.com/apk/res/android"
-    style="@style/WizardButtons"
-    a:layout_gravity="center_horizontal|bottom"
-    a:gravity="center">
-
-    <org.solovyev.android.material.MaterialButton
-        a:id="@+id/wizard_prev"
-        style="@style/MaterialButton.Wizard"
-        a:layout_width="0dp"
-        a:layout_height="wrap_content"
-        a:layout_weight="1"
-        a:visibility="gone" />
-
-    <org.solovyev.android.material.MaterialButton
-        a:id="@+id/wizard_next"
-        style="@style/MaterialButton.Wizard"
-        a:layout_width="0dp"
-        a:layout_height="wrap_content"
-        a:layout_weight="1"
-        a:visibility="gone" />
-
-</LinearLayout>

app/src/main/res/values/styles.xml

@@ -161,15 +161,6 @@
         <item name="android:textAppearance">@android:style/TextAppearance.Medium</item>
     </style>
 
-    <style name="BaseWizardButtons">
-        <item name="android:background">@null</item>
-        <item name="android:layout_width">wrap_content</item>
-        <item name="android:layout_height">wrap_content</item>
-        <item name="android:layout_marginTop">@dimen/control_margin</item>
-        <item name="android:layout_gravity">top|center_horizontal</item>
-        <item name="android:orientation">horizontal</item>
-    </style>
-
     <style name="WizardPrimaryButton" parent="PrimaryButton">
         <item name="android:singleLine">true</item>
         <item name="android:maxLines">1</item>
@@ -178,19 +169,8 @@
         <item name="android:textAppearance">@android:style/TextAppearance.Medium</item>
     </style>
 
-    <style name="WizardButtons" parent="BaseWizardButtons" />
-
     <style name="PrimaryButton" parent="MaterialButton"/>
 
-    <style name="WizardFragment">
-        <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">match_parent</item>
-        <item name="android:orientation">vertical</item>
-        <item name="android:paddingLeft">10dp</item>
-        <item name="android:paddingRight">10dp</item>
-        <item name="android:gravity">center</item>
-    </style>
-
     <style name="MaterialButton.Wizard" parent="MaterialButton">
         <item name="android:textColor">@color/cpp_button_text</item>
         <item name="materialColor">?attr/cpp_wizard_button_bg</item>