The Trapezoid Parts View which draw Trapezoid image

TrapezoidPartsView

the Trapezoid Parts View which draw Trapezoid image. and event on it.

使用

• Gradle

allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

 implementation 'com.github.LightSun:TrapezoidPartsView:1.0.1'

• xml中

  <com.heaven7.android.trapezoid.TrapezoidPartsView
        android:id="@+id/tpv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingStart="16dp"
        android:paddingEnd="16dp"
        app:tpv_angle="68"
        app:tpv_image_aspect_ratio="1.848485"
        app:tpv_text_color="@android:color/white"
        app:tpv_text_margin_top="15dp"
        app:tpv_text_margin_bottom="5dp"
        app:tpv_space="16dp"
        app:tpv_text_size="18sp"
        app:tpv_touch_alpha="0.7"
        app:tpv_debug="false"
        />

• 调用

 @OnClick(R.id.bt1)
    public void onClick(View view){
        List<TrapezoidPartsView.TrapezoidPart> list = createTrapezoidParts();
        mTpv.setParts(list);
    }
    //构造每个梯形部分。  
    private List<TrapezoidPartsView.TrapezoidPart> createTrapezoidParts() {
        List<TrapezoidPartsView.TrapezoidPart> list = new ArrayList<>();
        for (int i = 0; i < mBgIds.length ; i ++){
            TrapezoidPartsView.TrapezoidPart part = new TrapezoidPartsView.TrapezoidPart();
            //设置3个属性，依次是背景，小图标，文本。还有一个方法可设置类型。setType.
            part.setBgIcon(getDrawableBitmap(mBgIds[i]));
            part.setIcon(getResources().getDrawable(mIconIds[i]));
            part.setText(mStrs[i]);
            list.add(part);
        }
        return list;
    }

• Parcel序列化支持(用于onSaveInstanceState 和onRestoreInstanceState)

    private int[] mBgIds = {
            R.drawable.plan_database_bg,
            R.drawable.plan_music_bg,
            R.drawable.plan_editorz_bg,
    };
    private int[] mIconIds = {
            R.drawable.plan_database,
            R.drawable.plan_music,
            R.drawable.plan_editor,
    };
    private String[] mStrs = {
            "Projects",
            "Music",
            "Edit"
    };
    //因为drawable和bitmap本身不支持序列化。所以需要处理
     mTpv.setTrapezoidPartParcelCallback(new TrapezoidPartsView.TrapezoidPartParcelCallback() {
            @Override
            public void writeToBundle(Context context, Bundle out, int index, TrapezoidPartsView.TrapezoidPart part) {
                out.putInt("bg_id", mBgIds[index]);
                out.putInt("icon_id", mIconIds[index]);
            }
            @Override
            public void readFromBundle(Context context, Bundle in, int index, TrapezoidPartsView.TrapezoidPart part) {
                int bgId = in.getInt("bg_id");
                int iconId = in.getInt("icon_id");
                BitmapDrawable bgDrawable = (BitmapDrawable) context.getResources().getDrawable(bgId);
                Drawable icon = context.getResources().getDrawable(iconId);
                part.setBgIcon(bgDrawable.getBitmap());
                part.setIcon(icon);
            }
        });

自定义属性详解

<declare-styleable name="TrapezoidPartsView">
        <!-- 各个梯形之间的间隙（水平方向） -->
        <attr name="tpv_space" format="dimension|reference"/>
        <!-- 触摸梯形时的透明度。（用于2态效果） -->
        <attr name="tpv_touch_alpha" format="float|reference"/>
        <!-- 文本大小 --> 
        <attr name="tpv_text_size" format="dimension|reference"/>
        <!-- 文本颜色 --> 
        <attr name="tpv_text_color" format="color|reference"/>
        <!-- 文本距离顶部 --> 
        <attr name="tpv_text_margin_top" format="dimension|reference"/>
         <!-- 文本距离底部 --> 
        <attr name="tpv_text_margin_bottom" format="dimension|reference"/>
        <!-- 梯形的角度。用于动态计算梯形高度。使得可以等比缩放 -->
        <attr name="tpv_angle" format="float|reference"/>
        <!-- 梯形背景图的比例。用于等比缩放 -->
        <attr name="tpv_image_aspect_ratio" format="float|reference"/>
        <!-- 是否开启debug模式。debug下只会绘制边框 -->
        <attr name="tpv_debug" format="boolean|reference"/>
    </declare-styleable>

GitHub