DrawMe

Additional

Language
Java
Version
0.1.6 (Apr 3, 2016)
Created
Mar 23, 2016
Updated
Jun 8, 2017
Owner
Rafał Kobyłko (rafakob)
Contributors
Rafał Kobyłko (rafakob)
Aleksander Mielczarek (AleksanderMielczarek)
rafaltsh
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Blurb

DrawMe

With DrawMe you can easily create views with custom background shapes using only XML layout files. Quick example:

Standard way:

<!--drawable/back.xml-->
<shape 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:shape="rectangle">

    <corners android:radius="5dp" />
    <solid android:color="@android:color/white" />
    <stroke
        android:width="3dp"
        android:color="@android:color/black" />
</shape>


<!--layout/activity_main.xml-->
<FrameLayout
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:background="@drawable/back.xml"/>

With DrawMe:

<com.rafakob.drawme.DrawMeFrameLayout
    android:layout_width="100dp"
    android:layout_height="100dp"
    drawme:dm_backColor="@android:color/white"
    drawme:dm_strokeColor="@android:color/black"
    drawme:dm_radius="5dp"
    drawme:dm_stroke="3dp"/>

Library also supports different states: normal, pressed, disabled. It means that you can define different background and stroke colors for each state. The best thing about it is that DrawMe is "compatible" with pre and post Lollipop. On API +21 it uses native ripple press effect, and below it uses standard StateListDrawable. Here's example:

Standard way:

<!--drawable/custom_button.xml-->
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false">
        <shape android:shape="rectangle">
            <solid android:color="@color/colorDarkGray"/>
        </shape>
    </item>
    <item android:state_pressed="false">
        <shape android:shape="rectangle">
            <solid android:color="@color/colorButtonGreen"/>
        </shape>
    </item>
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="@color/colorButtonGreenFocused"/>
        </shape>
    </item>
</selector>


<!--drawable-v21/custom_button.xml-->
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false">
        <shape android:shape="rectangle">
            <solid android:color="@color/colorDarkGray"/>
        </shape>
    </item>
    <item android:state_enabled="true">
        <ripple
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:color="@color/colorButtonGreenFocused">
            <item>
                <color android:color="@color/colorButtonGreen"/>
            </item>
        </ripple>
    </item>
</selector>


<!--layout/activity_main.xml-->
<Button
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:background="@drawable/custom_button.xml"/>

With DrawMe:

<com.rafakob.drawme.DrawMeButton
    android:layout_width="match_parent"
    android:layout_height="50dp"
    drawme:dm_backColor="@color/colorButtonGreen"
    drawme:dm_backColorPressed="@color/colorButtonGreenFocused"
    drawme:dm_backColorDisabled="@color/colorDarkGray"
    drawme:dm_shapeRadiusHalfHeight="true"/>

Result

Pre Lollipop

API +21

Install

Add it in your root build.gradle at the end of repositories:

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

Add the dependency:

dependencies {
        compile 'com.github.rafakob:DrawMe:VERSION'
}

Features

Provided attributes are only accessiable from XML, you can't modify them from JAVA code (at least for now).

I tried to use as many default values as possible, so that user wouldn't have to specify too many attributes and colors. For instance you can define background color only for a normal state - pressed and disabled will be generated.

To fully understand everything just play around with it for a while. No rocket science here :)

EXAMPLES

Background shape

Attribute Format Default Description
dm_stroke dimension 0 Stroke width.
dm_radius dimension 0 Corner radius.
dm_radiusBottomLeft dimension -1 "-1" means that attribute will be ignored.
dm_radiusBottomRight dimension -1 as above
dm_radiusTopLeft dimension -1 as above
dm_radiusTopRight dimension -1 as above
dm_shapeRadiusHalfHeight boolean false True - use "full radius", other radius dimensions will be ignored.
dm_shapeEqualWidthHeight boolean false True - shape will have equal height and width.
  • Set dm_shapeRadiusHalfHeight and dm_shapeEqualWidthHeight in order to create a circle.
  • You can combine dm_radius with other radius dimensions, it works just like padding.

States and ripple

Attribute Format Default Description
dm_rippleEffect boolean true True - use ripple effect on API +21. False - use standard StateListDrawable on all devices.
dm_rippleUseControlHighlight boolean true Use theme attribute R.attr.colorControlHighlight as a ripple color. It's avaiable only on +21, and it's basically a 1F000000 color. On lower API "mimic" this highlight by mixing background color with a black mask (it should look almost the same as on +21). Matters only when pressed background color hasn't been specified.
dm_statePressed boolean true True - create pressed state. False - ignore it.
dm_stateDisabled boolean true True - create disabled state. False - ignore it.

First button is in normal state. Second is pressed with default ripple highlight. Third one uses custom color as pressed ripple effect:

Colors

Attribute Format Default Description
dm_backColor color Color.TRANSPARENT Background color - default state.
dm_backColorPressed color Dark highlight (like ripple) Background color - pressed state.
dm_backColorDisabled color Grayed out backColor Background color - disabled state.
dm_strokeColor color Color.GRAY Stroke color - default state.
dm_strokeColorPressed color Dark highlight (like ripple) Stroke color - pressed state.
dm_strokeColorDisabled color Grayed out strokeColor Stroke color - disabled state.
  • If you're not gonna define any attribute, view will have transaprent borderless background with pressed state like ripple effect.
  • Use android:stateListAnimator="@null" to disable default press shadow/elevation on +21.

Layouts

Avaiable layouts:

  • DrawMeFrameLayout
  • DrawMeLinearLayout
  • DrawMeRelativeLayout
  • DrawMeImageButton

All above attributes can be applied to them.

TextViews

Avaiable views:

  • DrawMeButton
  • DrawMeTextView
  • DrawMeEditText
Attribute Format Default Description
dm_font string null Name of a custom font, eg. Lato-Regular.ttf.
dm_textColor color System default Text color - default state. Same as android:textColor.
dm_textColorPressed color textColor Text color - pressed state.
dm_textColorDisabled color textColor Text color - disabled state.
dm_drawableTint color none Equivalent to android:drawableTint but it's compatible with preLollipop devices.
dm_drawableTintMode enum none Equivalent to android:drawableTintMode but it's compatible with preLollipop devices.
  • Custom fonts has to be put in assets/fonts. Library uses font caching.
  • Tintintg is performed using DrawableCompat.wrap() method.

Advanced - mask, adaptive highlight

Attribute Format Default
dm_maskColorPressed color #1F00000
dm_maskColorPressedInverse color #1DFFFFFF
dm_maskColorDisabled color #6DFFFFFF
dm_maskBrightnessThreshold float [0 - 1] 0

By default ripple color is just a blackish shadow over normal state color. I've added an option to adjust that shadow mask. Same applies to disabled color. Just modify dm_maskColorPressed and dm_maskColorDisabled:

But what when I have a black or very dark buttons? Ripple effect won't be visiable. In that case you have three options:

  • leave it as is
  • change dm_maskColorPressed to a lighter color
  • use an adaptive method by modifing dm_maskBrightnessThreshold

So how the adaption works?

  • Library calculates background color brightness: 0.0 means that background is black, 1.0 means it's white.
  • Compare background brightness with dm_maskBrightnessThreshold. If it's lower than use dm_maskColorPressedInverse instead of dm_maskColorPressed.

Example:

  • maskBrightnessThreshold = 0.2
  • Button X has background brightness 0.8 -> use dm_maskColorPressed -> ripple will be darker than background color
  • Button Y has background brightness 0.1 -> use dm_maskColorPressedInverse -> ripple will be lighter than background color

About

If you find any bugs feel free to report an issue or create a pull request. Suggestions and feature requestes are very welcome.

Use it wherever and however you want.

Changelog

0.1.6 (2016-04-04):#####
  • Support for theme buttonStyle. #####0.1.5 (2016-04-01):#####
  • Added dm_ prefix for all attributes.

License

Copyright 2016 Rafał Kobyłko

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.