I need to display a horizontal list of images using Flex. I can't use a horizontal TileList because the tiles all end up the size of the first item. Is there a flex control that will allow me to have items with different sizes?
Edit: The list of items would ideally come from a data provider. Unfortunately the control in Chetan Sastry's answer only supports data providers if the items have a fixed width.
Here's a code segment where I do what I think you're describing. The images are various sizes, but this displays them in a squared-up grid. The trick (at least for my requirements) is to set the height and minWidth for the container that goes into each cell.
<mx:TileList id="imgTiles" width="100%" height="100%"
paddingTop="2" paddingBottom="2" paddingLeft="2" paddingRight="2"
itemClick="eTilesClick(event)">
<mx:itemRenderer>
<mx:Component>
<mx:VBox horizontalAlign="center"
height="250" minWidth="150"
horizontalScrollPolicy="off" verticalScrollPolicy="off"
borderColor="#D2D2D2" borderThickness="1"
borderStyle="solid">
<mx:Label text="{data.imageCaption}" height="15" fontSize="10" fontWeight="bold"/>
<mx:Image source="{data.thumbnailUrl}" width="100%"/>
</mx:VBox>
</mx:Component>
</mx:itemRenderer>
</mx:TileList>
How about an HBox with a Repeater for your images?
Related
I'm using the following code to load an image to the screen:
<s:Scroller xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
width="100%"
height="100%">
<s:VGroup width="100%" horizontalAlign="center" paddingBottom="10" paddingLeft="10" paddingRight="10" paddingTop="10" verticalAlign="top">
<s:Label width="100%" text="Being Active" fontSize="14" fontFamily="Black"/>
<s:Image fillMode="scale" smooth="true" scaleMode="letterbox" verticalCenter="0" horizontalCenter="0" width="100%" source="#Embed('assets/img/q3/q3c1all.png')"/>
....
....
</s:VGroup>
</s:Scroller>
In the attached image, it has three images
1. Builder view
2. final design (what designer expects)
3. rendered output (what users will see)
Because of the scaleMode letterbox, there is lots of space above and below image is blanked. And this breaks out the layer. Can someone suggest how can I make the out put looks like design preview (titled Requirement)
How to scale the image proportionately without distorting (like its done in CSS).
To those who struggle with this issue - the solution is to use which will give you full control over the bitmap. One thing to note is - if you are planning to use interaction / events with the image, wrap it inside a container and add click event to it.
I dont know if this is best solution, but it worked for me :)
In Flex4/mxml, I have a bunch of elements like TextFields, Buttons or anything else. I want to place them horizontally next to each other. But for cases where the browser window or screen resolution is too small such that not all of them fit horizontally, I want a layout which automatically shifts the superfluous elements to the row below.
In other words, I need a layout which comprises both, horizontal and vertical layouting, whereas horizontal has priority over vertical. So actually a very simple layout, yet I'm unable to find a solution. How can I achieve that?
For example, the following is a starting point:
<mx:HBox horizontalGap="0" width="{width-30}" horizontalAlign="center" textAlign="center">
<mx:Label paddingLeft="10" text="anytext1" />
<mx:Label id="warn12" text="anytext2" />
<mx:Button label="Do Something1" click="{cf.doSomething(1)}"/>
<mx:Label paddingLeft="0" text="anytext3" />
<mx:Button label="Do Something2" click="{cf.doSomething(2)}"/>
</mx:HBox>
The HBox places all Labels and Buttons next to each other horizontally, and if the screen size is too small, the right most items exceed the right screen border, but I want them to appear below on the left in a second row.
In addition, but less important, I want the Labels and Buttons to be centered if the screen size is bigger than necessary. That's what the horizontalAlign="center" and textAlign="center" are meant for.
You should be able to use a Tile element. It automatically wraps elements to a new line if the screen isn't wide enough to accommodate everything:
<mx:Tile id="myFlow"
direction="horizontal" width="{width-30}"
paddingTop="0" paddingBottom="0"
paddingRight="0" paddingLeft="0"
verticalGap="0" horizontalGap="0">
<mx:Label paddingLeft="10" text="anytext1" />
<mx:Label id="warn12" text="anytext2" />
<mx:Button label="Do Something1" click="{cf.doSomething(1)}"/>
<mx:Label paddingLeft="0" text="anytext3" />
<mx:Button label="Do Something2" click="{cf.doSomething(2)}"/>
</mx:Tile>
I have a datagrid column that I am using an itemRenderer. Something like this
<mx:itemRenderer>
<mx:Component>
<mx:HBox width="100%" verticalAlign="middle" horizontalGap="0" horizontalScrollPolicy="off" height="22">
...
</mx:HBox>
</mx:Component>
</mx:itemRenderer>
The row heights are fine if the datagrid has any entities. However if there are not entries the rows height is no longer 22. Is there anyway to fix this?
(I have two datagrids beside each other. One is always populated so it has the right height. It looks really bad when the second one is not populated and the rows do not align).
Set the rowHeight property of your DataGrid to 22 (or whatever value you prefer). Then just set the height of the HBox in the itemRenderer to 100%.
I usually write something like this:
<mx:VBox height="100%" width="155">
<mx:Button label="b1" width="100%"/>
<mx:Buttonlabel="b2" width="100%"/>
<mx:Button label="b3" width="100%"/>
<mx:Button label="b4" width="100%"/>
</mx:VBox>
So I need all the child components to be 100%, anybody knows any other way of doing this, like without having to specify 100% for all children.
Maybe do it programmatically on load? Loop through direct children and set their widths, setting it to 100%
In the following example there is no horizontal scrollbar shown. As soon as I change horizontalScrollPolicy="auto" width horizontalScrollPolicy="on" it works fine. Anyone an idea whats wrong with this example?
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:ArrayCollection id="ac">
<mx:Array>
<mx:Object name="Text Text Text Text"/>
<mx:Object name="Text Text Text Text"/>
</mx:Array>
</mx:ArrayCollection>
<mx:List id="myList" width="100" height="100" horizontalScrollPolicy="auto" maxWidth="100"
dataProvider="{ac}"
labelField="name"/>
<mx:Tree width="100" height="100" horizontalScrollPolicy="auto" maxWidth="100"
dataProvider="{ac}" labelField="name" x="128" y="66"/>
</mx:Application>
thanks and regards
cyrill
Check this blog post: autoscrolling for flex tree
Quoting it:
The problem was that in a Tree (and other List-based components), when you set the horizontalScrollPolicy to auto, the scrollbars actually don't come out when they should. This seems like a bug at first, but we did this by design for performance reasons. In order to display the scrollbar properly, we need to measure the width of all the items (on-screen or not) and this would just take too much time to do by default. So instead, to get a scrollbar to show up, you need to set maxHorizontalScrollPosition, which is how much the user can scroll.