![]() var childLayoutData = new ResponsiveGridLayoutData() The following example sets different span values over a variety of breakpoints for a single child. The following breakpoints are defined by default. This is what makes the layout responsive. ResponsiveGridLayout supports breakpoints, which are customizable width thresholds that determine how the layout behaves depending on the size of the container. ResponsiveGridLayoutData has a number of additional properties, but it's necessary to understand the concept of breakpoints to use them. The next example sets offset property to 3, meaning that the child will be positioned after three empty columns. ![]() The following example sets span property to 12, meaning that the child will fill an entire row of 12 columns. To adjust how many columns a child should fill, or to provide an offset, create an instance of ResponsiveGridLayoutData and pass it to a child's layoutData property. sets column and row gaps to the same value If both gap properties should be set to the same value, call the setGap() method instead. The columnGap and rowGap properties are measured in pixels. The gap is the space between items, either horizontally or vertically. sets top, right, bottom and left to the same value If all four padding properties should be set to the same value, call the setPadding() method instead. Padding may be added on each side, including top, right, bottom, and left. The padding is the space around the edges of the container that will contain no children. The following sections will introduce a number of properties that may be used to adjust the positioning and sizing of children in the layout. ![]() If ResponsiveGridLayoutData is not passed to a child, the layout will automatically assign the child to 1 column with no offset. Then, the next child will be positioned below the previous children to start a new row. Each additional child will be positioned to the right of the previous child - creating a horizontal row, until the total number of columns exceeds the maximum columns of the layout (defaults to 12 columns). container.layout = new ResponsiveGridLayout() īy default, the first child will be positioned in the top-left corner. Set the container's layout property to a new ResponsiveGridLayout instance. Live preview of ResponsiveGridLayout The BasicsĬreate a LayoutGroup container, add it to the display list, and then add a few children to the container. When a row is "full", meaning that all twelve columns have been filled, items are laid out starting on the next row automatically. Items may span multiple columns and may be positioned with offsets in between. Typically, this is handled by writing breakpoints into your CSS.The ResponsiveGridLayout class positions items in a grid, with a specific number of columns (defaulting to twelve columns). A good example of this is a navigation bar you might want to show the user all of their options when they are viewing the webpage on a laptop, but collapse the menu into a “hamburger” (a drop-down menu served by an icon that looks like this: ) when it is viewed on a mobile device. Sometimes, however, you want the actual displayed content to change depending on the view. These are both good strategies for adapting content that you want to keep in the same relative positions and proportions, no matter what the window size is when it is viewed. This text, for example, takes up 80% of its container div instead of having a width of fixed pixels. Similarly, it is good practice to use percentages instead of pixels when defining height and width. ![]() 1em is bigger when viewed at 125% than it is when viewed at 100%, but 1px does not change when you increase or decrease the page. Now, it commonly refers to the standard size of words in that browser or view. ‘Em’ doesn’t really stand for anything anymore, but you can read up on the history of what it once meant here. Good common practices for writing responsive websites include using ems instead of pixels when defining font sizes. You can easily see some of those elements of responsiveness by simply resizing your screen. It also means that if you’re someone like me who prefers to look at text at 125%, you don’t lose form or function. It means that a website looks good when you show it to an audience on a projector. In the context of this discussion, responsive, mobile-first design means a website that looks just as good on a cellphone or a tablet as it does on a laptop screen. ![]()
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