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Component Reference

Component Reference: Button

DOM Structure

<button class="z-button">
    <img class="z-button-image" />
</button>

LESS Source

Basically, LESS source is correspondent to it's DOM structure, each state also have different styles.

.z-button {
    /* normal style */

    /* hover style */
    &:hover {
    }
    /* focus style */
    &:focus {
    }
    /* active style */
    &:active {
    }
    /* disabled style */
    &[disabled] {
    }
}

Check complete LESS source for Button from Github.

LESS Variables

The following LESS variables are used for the Button component. Check other variables from here.

Variables Default Value
@baseButtonHeight 24px
@buttonBorderColor #A9A9A9
@buttonGradientStart #FEFEFE
@buttonGradientEnd #EEEEEE

Customize Sample

Target Design

Assume the image below is our target design for Button component. No border, gradient background, rounded corner or shadow effects.

Styleguide-button-design.png

Implementation Details

Setup environment and Analyze design

  • Check the instruction to setup component customization environment.
  • Analyze the design
    • Used Color
      Text: 14px, #FFFFFF
      Normal Background: #5687A8
      Hover Background: #5E94B8
      Pressed Background: #4C7895
      Focus Background: #436983
      Disabled Background: #ACACAC
    • Size
      Height: 32px
      Horizontal Padding: 16px
      Vertical Padding: 4px

Modify button.less file to achieve target design

Refer  here for built-in zk less functions.
  • Change text color and remove border and text-shadow effect:
.z-button {
    .fontStyle(@baseTitleFontFamily, 14px, normal, #FFFFFF);
    text-shadow: none; /* remove text shadow */
    border: none;
    /* omitted */
}
  • Remove rounded corner:
.z-button {
    .borderRadius(0);
}
  • Modify Normal state background:
.z-button {
    .verGradient(#5687A8, #5687A8); /* no gradient, pass the same color arguments for the function */
}
  • Modify Hover state:
.z-button {
    &:hover {
        color: #FFFFFF;
        .verGradient(#5E94B8, #5E94B8); /* no gradient, pass the same color arguments for the function */
        .boxShadow(inset 0 -2px 0 #436983); /* for simulation 3d effect */
    }
}
  • Modify Pressed state:
.z-button {
    &:active {
        color: #FFFFFF;
        .verGradient(#4C7895, #4C7895); /* no gradient, pass the same color arguments for the function */
        .boxShadow(inset 0 2px 0 #3A5B72); /* for simulation 3d effect */
    }
}
  • Modify Focus state:
.z-button {
    &:focus {
        color: #FFFFFF;
        .verGradient(#436983, #436983); /* no gradient, pass the same color arguments for the function */
        .boxShadow(none);
    }
}
  • Modify Disabled state:
.z-button {
    &[disabled] {
        color: #FFFFFF;
        .verGradient(#ACACAC, #ACACAC); /* no gradient, pass the same color arguments for the function */
        .boxShadow(none);
        .opacity(1); /* no opacity needed */
    }
}
  • Modify Size:
.z-button {
    /* omitted */
    min-height: 32px;
    padding: 4px 16px;
}

Final result

Styleguide-button.png

Additional Customization

If icon font is used inside a button component as below:

<button label="Button" iconSclass="z-icon-flag" />

The icon color is same as label by default, if you wish to change icon color only, add extra style like this:

.z-button {
    /* omitted */

    > [class*="z-icon-"] {
        color: red;
    }
}

Version History

Last Update : 2013/11/28


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Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.