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  • Color difference between vista and Win7

    - by MSGrimpeur
    Have an indicator in the form of an image which is displayed in a graphics viewport. The indicator can be any colour the user selects so we created a single image with a pallette and change a specific color in the pallette to the one the user picks using the following code. /// <summary> /// Copies the image and sets transparency and fill colour of the copy. The image is intended to be a simple filled shape such as a square /// with the inside all in one colour. /// </summary> /// <remarks>Assumes the fill colour to be changed is Red, /// black is the boundary colour and off white (RGB 233,233,233) is the colour to be made transparent</remarks> /// <param name="image"></param> /// <param name="fillColour"></param> /// <returns></returns> protected Bitmap CopyWithStyle(Bitmap image, Color fillColour) { ColorPalette selectionIndicatorPalette = image.Palette; int fillColourIndex = selectionIndicatorPalette.IndexOf(Color.Red); selectionIndicatorPalette.Entries[fillColourIndex] = fillColour; image.Palette = selectionIndicatorPalette; Bitmap tempImage = image; tempImage.MakeTransparent(transparentColour); return tempImage; } To be honest I'm not sure if this is a bit cludgy and there is some smarter approach or not, so any thoughts there would help. However the main issue is that this appears to work fine on Win7 but in vista and XP the color does not change. Has any one seen this before. I've found one or two articles that suggest there are some differences in ARGB between them but nothing particularly concrete. Any help greatfully accepted.

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  • Adventures in Windows 8: Placing items in a GridView with a ColumnSpan or RowSpan

    - by Laurent Bugnion
    Currently working on a Windows 8 app for an important client, I will be writing about small issues, tips and tricks, ideas and whatever occurs to me during the development and the integration of this app. When working with a GridView, it is quite common to use a VariableSizedWrapGrid as the ItemsPanel. This creates a nice flowing layout which will auto-adapt for various resolutions. This is ideal when you want to build views like the Windows 8 start menu. However immediately we notice that the Start menu allows to place items on one column (Smaller) or two columns (Larger). This switch happens through the AppBar. So how do we implement that in our app? Using ColumnSpan and RowSpan When you use a VariableSizedWrapGrid directly in your XAML, you can attach the VariableSizedWrapGrid.ColumnSpan and VariableSizedWrapGrid.RowSpan attached properties directly to an item to create the desired effect. For instance this code create this output (shown in Blend but it runs just the same): <VariableSizedWrapGrid ItemHeight="100" ItemWidth="100" Width="200" Orientation="Horizontal"> <Rectangle Fill="Purple" /> <Rectangle Fill="Orange" /> <Rectangle Fill="Yellow" VariableSizedWrapGrid.ColumnSpan="2" /> <Rectangle Fill="Red" VariableSizedWrapGrid.ColumnSpan="2" VariableSizedWrapGrid.RowSpan="2" /> <Rectangle Fill="Green" VariableSizedWrapGrid.RowSpan="2" /> <Rectangle Fill="Blue" /> <Rectangle Fill="LightGray" /> </VariableSizedWrapGrid> Using the VariableSizedWrapGrid as ItemsPanel When you use a GridView however, you typically bind the ItemsSource property to a collection, for example in a viewmodel. In that case, you want to be able to switch the ColumnSpan and RowSpan depending on properties on the item. I tried to find a way to bind the VariableSizedWrapGrid.ColumnSpan attached property on the GridView’s ItemContainerStyle template to an observable property on the item, but it didn’t work. Instead, I decided to use a StyleSelector to switch the GridViewItem’s style. Here’s how: First I added my two GridViews to my XAML as follows: <Page.Resources> <local:MainViewModel x:Key="Main" /> <DataTemplate x:Key="DataTemplate1"> <Grid Background="{Binding Brush}"> <TextBlock Text="{Binding BrushCode}" /> </Grid> </DataTemplate> </Page.Resources> <Page.DataContext> <Binding Source="{StaticResource Main}" /> </Page.DataContext> <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}" Margin="20"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <GridView ItemsSource="{Binding Items}" ItemTemplate="{StaticResource DataTemplate1}" VerticalAlignment="Top"> <GridView.ItemsPanel> <ItemsPanelTemplate> <VariableSizedWrapGrid ItemHeight="150" ItemWidth="150" /> </ItemsPanelTemplate> </GridView.ItemsPanel> </GridView> <GridView Grid.Column="1" ItemsSource="{Binding Items}" ItemTemplate="{StaticResource DataTemplate1}" VerticalAlignment="Top"> <GridView.ItemsPanel> <ItemsPanelTemplate> <VariableSizedWrapGrid ItemHeight="100" ItemWidth="100" /> </ItemsPanelTemplate> </GridView.ItemsPanel> </GridView> </Grid> The MainViewModel looks like this: public class MainViewModel { public IList<Item> Items { get; private set; } public MainViewModel() { Items = new List<Item> { new Item { Brush = new SolidColorBrush(Colors.Red) }, new Item { Brush = new SolidColorBrush(Colors.Blue) }, new Item { Brush = new SolidColorBrush(Colors.Green), }, // And more... }; } } As for the Item class, I am using an MVVM Light ObservableObject but you can use your own simple implementation of INotifyPropertyChanged of course: public class Item : ObservableObject { public const string ColSpanPropertyName = "ColSpan"; private int _colSpan = 1; public int ColSpan { get { return _colSpan; } set { Set(ColSpanPropertyName, ref _colSpan, value); } } public SolidColorBrush Brush { get; set; } public string BrushCode { get { return Brush.Color.ToString(); } } } Then I copied the GridViewItem’s style locally. To do this, I use Expression Blend’s functionality. It has the disadvantage to copy a large portion of XAML to your application, but the HUGE advantage to allow you to change the look and feel of your GridViewItem everywhere in the application. For example, you can change the selection chrome, the item’s alignments and many other properties. Actually everytime I use a ListBox, ListView or any other data control, I typically copy the item style to a resource dictionary in my application and I tweak it. Note that Blend for Windows 8 apps is automatically installed with every edition of Visual Studio 2012 (including Express) so you have no excuses anymore not to use Blend :) Open MainPage.xaml in Expression Blend by right clicking on the MainPage.xaml file in the Solution Explorer and selecting Open in Blend from the context menu. Note that the items do not look very nice! The reason is that the default ItemContainerStyle sets the content’s alignment to “Center” which I never quite understood. Seems to me that you rather want the content to be stretched, but anyway it is easy to change.   Right click on the GridView on the left and select Edit Additional Templates, Edit Generated Item Container (ItemContainerStyle), Edit a Copy. In the Create Style Resource dialog, enter the name “DefaultGridViewItemStyle”, select “Application” and press OK. Side note 1: You need to save in a global resource dictionary because later we will need to retrieve that Style from a global location. Side note 2": I would rather copy the style to an external resource dictionary that I link into the App.xaml file, but I want to keep things simple here. Blend switches in Template edit mode. The template you are editing now is inside the ItemContainerStyle and will govern the appearance of your items. This is where, for instance, the “checked” chrome is defined, and where you can alter it if you need to. Note that you can reuse this style for all your GridViews even if you use a different DataTemplate for your items. Makes sense? I probably need to think about writing another blog post dedicated to the ItemContainerStyle :) In the breadcrumb bar on top of the page, click on the style icon. The property we want to change now can be changed in the Style instead of the Template, which is a better idea. Blend is not in Style edit mode, as you can see in the Objects and Timeline pane. In the Properties pane, in the Search box, enter the word “content”. This will filter all the properties containing that partial string, including the two we are interested in: HorizontalContentAlignment and VerticalContentAlignment. Set these two values to “Stretch” instead of the default “Center”. Using the breadcrumb bar again, set the scope back to the Page (by clicking on the first crumb on the left). Notice how the items are now showing as squares in the first GridView. We will now use the same ItemContainerStyle for the second GridView. To do this, right click on the second GridView and select Edit Additional Templates, Edit Generate Item Container, Apply Resource, DefaultGridViewItemStyle. The page now looks nicer: And now for the ColumnSpan! So now, let’s change the ColumnSpan property. First, let’s define a new Style that inherits the ItemContainerStyle we created before. Make sure that you save everything in Blend by pressing Ctrl-Shift-S. Open App.xaml in Visual Studio. Below the newly created DefaultGridViewItemStyle resource, add the following style: <Style x:Key="WideGridViewItemStyle" TargetType="GridViewItem" BasedOn="{StaticResource DefaultGridViewItemStyle}"> <Setter Property="VariableSizedWrapGrid.ColumnSpan" Value="2" /> </Style> Add a new class to the project, and name it MainItemStyleSelector. Implement the class as follows: public class MainItemStyleSelector : StyleSelector { protected override Style SelectStyleCore(object item, DependencyObject container) { var i = (Item)item; if (i.ColSpan == 2) { return Application.Current.Resources["WideGridViewItemStyle"] as Style; } return Application.Current.Resources["DefaultGridViewItemStyle"] as Style; } } In MainPage.xaml, add a resource to the Page.Resources section: <local:MainItemStyleSelector x:Key="MainItemStyleSelector" /> In MainPage.xaml, replace the ItemContainerStyle property on the first GridView with the ItemContainerStyleSelector property, pointing to the StaticResource we just defined. <GridView ItemsSource="{Binding Items}" ItemTemplate="{StaticResource DataTemplate1}" VerticalAlignment="Top" ItemContainerStyleSelector="{StaticResource MainItemStyleSelector}"> <GridView.ItemsPanel> <ItemsPanelTemplate> <VariableSizedWrapGrid ItemHeight="150" ItemWidth="150" /> </ItemsPanelTemplate> </GridView.ItemsPanel> </GridView> Do the same for the second GridView as well. Finally, in the MainViewModel, change the ColumnSpan property on the 3rd Item to 2. new Item { Brush = new SolidColorBrush(Colors.Green), ColSpan = 2 }, Running the application now creates the following image, which is what we wanted. Notice how the green item is now a “wide tile”. You can also experiment by creating different Styles, all inheriting the DefaultGridViewItemStyle and using different values of RowSpan for instance. This will allow you to create any layout you want, while leaving the heavy lifting of “flowing the layout” to the GridView control. What about changing these values dynamically? Of course as we can see in the Start menu, it would be nice to be able to change the ColumnSpan and maybe even the RowSpan values at runtime. Unfortunately at this time I have not found a good way to do that. I am investigating however and will make sure to post a follow up when I find what I am looking for!   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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  • Alert visualization recipe: Get out your blender, drop in some sp_send_dbmail, Google Charts API, add your favorite colors and sprinkle with html. Blend till it’s smooth and looks pretty enough to taste.

    - by Maria Zakourdaev
      I really like database monitoring. My email inbox have a constant flow of different types of alerts coming from our production servers with all kinds of information, sometimes more useful and sometimes less useful. Usually database alerts look really simple, it’s usually a plain text email saying “Prod1 Database data file on Server X is 80% used. You’d better grow it manually before some query triggers the AutoGrowth process”. Imagine you could have received email like the one below.  In addition to the alert description it could have also included the the database file growth chart over the past 6 months. Wouldn’t it give you much more information whether the data growth is natural or extreme? That’s truly what data visualization is for. Believe it or not, I have sent the graph below from SQL Server stored procedure without buying any additional data monitoring/visualization tool.   Would you like to visualize your database alerts like I do? Then like myself, you’d love the Google Charts. All you need to know is a little HTML and have a mail profile configured on your SQL Server instance regardless of the SQL Server version. First of all, I hope you know that the sp_send_dbmail procedure has a great parameter @body_format = ‘HTML’, which allows us to send rich and colorful messages instead of boring black and white ones. All that we need is to dynamically create HTML code. This is how, for instance, you can create a table and populate it with some data: DECLARE @html varchar(max) SET @html = '<html>' + '<H3><font id="Text" style='color: Green;'>Top Databases: </H3>' + '<table border="1" bordercolor="#3300FF" style='background-color:#DDF8CC' width='70%' cellpadding='3' cellspacing='3'>' + '<tr><font color="Green"><th>Database Name</th><th>Size</th><th>Physical Name</th></tr>' + CAST( (SELECT TOP 10                             td = name,'',                             td = size * 8/1024 ,'',                             td = physical_name              FROM sys.master_files               ORDER BY size DESC             FOR XML PATH ('tr'),TYPE ) AS VARCHAR(MAX)) + '</table>' EXEC msdb.dbo.sp_send_dbmail @recipients = '[email protected]', @subject ='Top databases', @body = @html, @body_format = 'HTML' This is the result:   If you want to add more visualization effects, you can use Google Charts Tools https://google-developers.appspot.com/chart/interactive/docs/index which is a free and rich library of data visualization charts, they’re also easy to populate and embed. There are two versions of the Google Charts Image based charts: https://google-developers.appspot.com/chart/image/docs/gallery/chart_gall This is an old version, it’s officially deprecated although it will be up for a next few years or so. I really enjoy using this one because it can be viewed within the email body. For mobile devices you need to change the “Load remote images” property in your email application configuration.           Charts based on JavaScript classes: https://google-developers.appspot.com/chart/interactive/docs/gallery This API is newer, with rich and highly interactive charts, and it’s much more easier to understand and configure. The only downside of it is that they cannot be viewed within the email body. Outlook, Gmail and many other email clients, as part of their security policy, do not run any JavaScript that’s placed within the email body. However, you can still enjoy this API by sending the report as an email attachment. Here is an example of the old version of Google Charts API, sending the same top databases report as in the previous example but instead of a simple table, this script is using a pie chart right from  the T-SQL code DECLARE @html  varchar(8000) DECLARE @Series  varchar(800),@Labels  varchar(8000),@Legend  varchar(8000);     SET @Series = ''; SET @Labels = ''; SET @Legend = ''; SELECT TOP 5 @Series = @Series + CAST(size * 8/1024 as varchar) + ',',                         @Labels = @Labels +CAST(size * 8/1024 as varchar) + 'MB'+'|',                         @Legend = @Legend + name + '|' FROM sys.master_files ORDER BY size DESC SELECT @Series = SUBSTRING(@Series,1,LEN(@Series)-1),         @Labels = SUBSTRING(@Labels,1,LEN(@Labels)-1),         @Legend = SUBSTRING(@Legend,1,LEN(@Legend)-1) SET @html =   '<H3><font color="Green"> '+@@ServerName+' top 5 databases : </H3>'+    '<br>'+    '<img src="http://chart.apis.google.com/chart?'+    'chf=bg,s,DDF8CC&'+    'cht=p&'+    'chs=400x200&'+    'chco=3072F3|7777CC|FF9900|FF0000|4A8C26&'+    'chd=t:'+@Series+'&'+    'chl='+@Labels+'&'+    'chma=0,0,0,0&'+    'chdl='+@Legend+'&'+    'chdlp=b"'+    'alt="'+@@ServerName+' top 5 databases" />'              EXEC msdb.dbo.sp_send_dbmail @recipients = '[email protected]',                             @subject = 'Top databases',                             @body = @html,                             @body_format = 'HTML' This is what you get. Isn’t it great? Chart parameters reference: chf     Gradient fill  bg - backgroud ; s- solid cht     chart type  ( p - pie) chs        chart size width/height chco    series colors chd        chart data string        1,2,3,2 chl        pir chart labels        a|b|c|d chma    chart margins chdl    chart legend            a|b|c|d chdlp    chart legend text        b - bottom of chart   Line graph implementation is also really easy and powerful DECLARE @html varchar(max) DECLARE @Series varchar(max) DECLARE @HourList varchar(max) SET @Series = ''; SET @HourList = ''; SELECT @HourList = @HourList + SUBSTRING(CONVERT(varchar(13),last_execution_time,121), 12,2)  + '|' ,              @Series = @Series + CAST( COUNT(1) as varchar) + ',' FROM sys.dm_exec_query_stats s     CROSS APPLY sys.dm_exec_sql_text(plan_handle) t WHERE last_execution_time > = getdate()-1 GROUP BY CONVERT(varchar(13),last_execution_time,121) ORDER BY CONVERT(varchar(13),last_execution_time,121) SET @Series = SUBSTRING(@Series,1,LEN(@Series)-1) SET @html = '<img src="http://chart.apis.google.com/chart?'+ 'chco=CA3D05,87CEEB&'+ 'chd=t:'+@Series+'&'+ 'chds=1,350&'+ 'chdl= Proc executions from cache&'+ 'chf=bg,s,1F1D1D|c,lg,0,363433,1.0,2E2B2A,0.0&'+ 'chg=25.0,25.0,3,2&'+ 'chls=3|3&'+ 'chm=d,CA3D05,0,-1,12,0|d,FFFFFF,0,-1,8,0|d,87CEEB,1,-1,12,0|d,FFFFFF,1,-1,8,0&'+ 'chs=600x450&'+ 'cht=lc&'+ 'chts=FFFFFF,14&'+ 'chtt=Executions for from' +(SELECT CONVERT(varchar(16),min(last_execution_time),121)          FROM sys.dm_exec_query_stats          WHERE last_execution_time > = getdate()-1) +' till '+ +(SELECT CONVERT(varchar(16),max(last_execution_time),121)     FROM sys.dm_exec_query_stats) + '&'+ 'chxp=1,50.0|4,50.0&'+ 'chxs=0,FFFFFF,12,0|1,FFFFFF,12,0|2,FFFFFF,12,0|3,FFFFFF,12,0|4,FFFFFF,14,0&'+ 'chxt=y,y,x,x,x&'+ 'chxl=0:|1|350|1:|N|2:|'+@HourList+'3:|Hour&'+ 'chma=55,120,0,0" alt="" />' EXEC msdb.dbo.sp_send_dbmail @recipients = '[email protected]', @subject ='Daily number of executions', @body = @html, @body_format = 'HTML' Chart parameters reference: chco    series colors chd        series data chds    scale format chdl    chart legend chf        background fills chg        grid line chls    line style chm        line fill chs        chart size cht        chart type chts    chart style chtt    chart title chxp    axis label positions chxs    axis label styles chxt    axis tick mark styles chxl    axis labels chma    chart margins If you don’t mind to get your charts as an email attachment, you can enjoy the Java based Google Charts which are even easier to configure, and have much more advanced graphics. In the example below, the sp_send_email procedure uses the parameter @query which will be executed at the time that sp_send_dbemail is executed and the HTML result of this execution will be attached to the email. DECLARE @html varchar(max),@query varchar(max) DECLARE @SeriesDBusers  varchar(800);     SET @SeriesDBusers = ''; SELECT @SeriesDBusers = @SeriesDBusers +  ' ["'+DB_NAME(r.database_id) +'", ' +cast(count(1) as varchar)+'],' FROM sys.dm_exec_requests r GROUP BY DB_NAME(database_id) ORDER BY count(1) desc; SET @SeriesDBusers = SUBSTRING(@SeriesDBusers,1,LEN(@SeriesDBusers)-1) SET @query = ' PRINT '' <html>   <head>     <script type="text/javascript" src="https://www.google.com/jsapi"></script>     <script type="text/javascript">       google.load("visualization", "1", {packages:["corechart"]});        google.setOnLoadCallback(drawChart);       function drawChart() {                      var data = google.visualization.arrayToDataTable([                        ["Database Name", "Active users"],                        '+@SeriesDBusers+'                      ]);                        var options = {                        title: "Active users",                        pieSliceText: "value"                      };                        var chart = new google.visualization.PieChart(document.getElementById("chart_div"));                      chart.draw(data, options);       };     </script>   </head>   <body>     <table>     <tr><td>         <div id="chart_div" style='width: 800px; height: 300px;'></div>         </td></tr>     </table>   </body> </html> ''' EXEC msdb.dbo.sp_send_dbmail    @recipients = '[email protected]',    @subject ='Active users',    @body = @html,    @body_format = 'HTML',    @query = @Query,     @attach_query_result_as_file = 1,     @query_attachment_filename = 'Results.htm' After opening the email attachment in the browser you are getting this kind of report: In fact, the above is not only for database alerts. It can be used for applicative reports if you need high levels of customization that you cannot achieve using standard methods like SSRS. If you need more information on how to customize the charts, you can try the following: Image Based Charts wizard https://google-developers.appspot.com/chart/image/docs/chart_wizard  Live Image Charts Playground https://google-developers.appspot.com/chart/image/docs/chart_playground Image Based Charts Parameters List https://google-developers.appspot.com/chart/image/docs/chart_params Java Script Charts Playground https://code.google.com/apis/ajax/playground/?type=visualization Use the above examples as a starting point for your procedures and I’d be more than happy to hear of your implementations of the above techniques. Yours, Maria

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  • OpenGL ES Shader help (Blending)

    - by Chris
    Earlier I required assistance getting to grips with how to retain the alpha channel of a transparent texture in my colourised texture shader program. Whilst playing with that first version of my program (before obtaining the solution to my first requirement), I managed to enable transparency for the whole texture (effectively blending via GLSL), and I quite liked this, and I would now like to know if and how it is possible to retain this blending effect, on top of the existing output without affecting the original alpha channel - as I don't know how to input this transparency via the parameter that is already being provided with the textures alpha channel. A basic example of the blending program I am referring to (minus any other functionality) is as follows... varying vec2 texCoord; uniform sampler2D texSampler; void main() { gl_FragColor = vec4(texture2D(texSampler,texCoord).xyz,0.5); } Where 0.5 is the transparency (blending effect) of the whole texture. This is the current version of my program, which provides the ability to colour a texture according the colour parameter passed to the program, and retains the alpha channel of the original texture. varying vec2 texCoord; uniform sampler2D texSampler; uniform vec3 colour; void main() { gl_FragColor = vec4(colour,1) * vec4(texture2D(texSampler,texCoord).xyz,texture2D(texSampler,texCoord).w); } I need to know if it is possible to apply transparency on top this program, without affecting the original alpha channel which I have already preserved. I hope this makes enough sense, I am sure it is possible, and if so I should imagine it is rather simple, but this has me stumped. Any help much appreachiated. Cheers, Chris

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  • Silverlight Cream for June 08, 2010 -- #877

    - by Dave Campbell
    In this Issue: Miroslav Miroslavov, Chris Klug, Beau, Christian Schormann(-2-), Dan Wahlin, Pete Brown, Michael S. Scherotter, Philipp Sumi, Andy Wigley, and Phil Middlemiss. Shoutouts: Mark Tucker set about learning Caliburn, and in the process is writing a Caliburn Book: Chapters 1-3 Jesse Liberty has a great link-laden post up about why we should all be learning/using Blend: Why Developers Should, Must, Do Care About The New Expression Blend be sure to read what he says about WP7 development, however! Charlie Kindel announced an Install problem with the Developer Tools CTP Refresh and the WP7 tools... check this out if you're having problems. John Papa has a good post up on the happenings yesterday: Expression Studio 4 Launch of Blend, SketchFlow, Encoder and More! Erik Mork & Company's latest "This Week in Silverlight" is titled First Drop: Prism v4 – First Drop is Available From SilverlightCream.com: Animated navigation between Pages Miroslav Miroslavov has Part 8 of his "Silverlight in Action" series up, detailing cool things from the CompleteIT site... this one is on Animated navigation between pages. Subtitling videos Chris Klug got a gig adding subtitles to videos for Microsoft (sweet) ... and no, not *that* kind of subtitles... read how he approached the final solution. Silverlight Watermark TextBox I'm not sure we can have too many Watermark TextBoxes, and neither does Beau , who sent me a link to this one... give it a dance and decide. Blend 4: Collaborative SketchFlow Feedback with SharePoint With the new Blend release, Christian Schormann has a post up describing the lashup to Sharepoint for sharing Sketchflow and getting feedback. New Utility, Links, and Tutorials for Path-Based Layout Christian Schormann also has a collection of resources for Path-Based Layouts, including a utility "that lets you apply a whole bunch of position-specific effects without having to write any code"... lots of links to resources here. Tales from the Trenches – Building a Real-World Silverlight Line of Business Application Dan Wahlin draws on his recent experience and lays out some of the fun and pitfalls of building LOB apps in Silverlight... WCF, MVVM, slides, and code included WPF (and Silverlight): Choose your Fonts and Text Rendering Options Wisely Pete Brown has a great post up on using fonts wisely across multiple platforms... lots of info and good discussion in the comments as well. Ball Watch USA Remember the awesome watch Michael S. Scherotter did in Silverlight 1 and then converted to Updated Ball Trainmaster Cannonball Watch to Silverlight 2? Well... there's now a contest underfoot and 8 videos to help you get started... all good stuff, and good luck! ... Michael has a post up about the contest: Enter to Win a Ball Watch by Creating One in Silverlight Announcing Sketchables – Rapid Mockup Creation with SketchFlow By way of Jesse Libertyhttp://jesseliberty.com/2010/06/08/why-developers-should-must-do-care-about-the-new-expression-blend/, this is a cool production by Philipp Sumi about a simple mockup framework he's created. Perst - a database for Windows Phone 7 Silverlight I think one of my first comments to Michael Washington back at the MVP Summit 2010 was that we'd need a database engine, and too cool, but we've got one, Andy Wigley discusses Perst in this post... to save you some time, here's the Perst site A Chrome and Glass Theme - Part 7 Phil Middlemiss has part 7 of his great theme-building series up... this time he's giving the accordian control a once-over. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Cream for February 06, 2011 -- #1042

    - by Dave Campbell
    In this Issue: Mike Taulty, Timmy Kokke, Laurent Bugnion, Arik Poznanski, Deyan Ginev, Deborah Kurata(-2-), Johnny Tordgeman, Roy Dallal, Jaime Rodriguez, Samuel Jack(-2-), James Ashley. Above the Fold: Silverlight: "Customizing Silverlight properties for Visual Designers" Timmy Kokke WP7: "Back button press when using webbrowser control in WP7" Jaime Rodriguez Expression Blend: "Blend Bits 21–Importing from Photoshop & Illustrator…" Mike Taulty From SilverlightCream.com: Blend Bits 21–Importing from Photoshop & Illustrator… Mike Taulty is up to 21 episodes on his Blend Bits sequence now, and this one is about using Blend's import capability, such as a .psd file with all the layers intact. Customizing Silverlight properties for Visual Designers Timmy Kokke has part 1 of 2 parts on making your Silverlight control properties in design surfaces such as Visual Studio designer or Expression Blend. An error when installing MVVM Light templates for VS10 Express Laurent Bugnion has released a new version of MVVMLight that resolves a problem with VS2010 Express version of the templates... no problem with anything else. Reading RSS items on Windows Phone 7 Arik Poznanski has a post up about reading RSS on a WP7, but better yet, he also has code for a helper class that you can grab, plus explanation of wiring it up. Integrating your Windows Phone unit tests with MSBuild #4: The WP7 Unit Test Application Deyan Ginev has a post up about Telerik's WP7 test app that outputs test results in XML from the emulator so they can be integrated with the MSBuild log. Accessing Data in a Silverlight Application: EF I apprently missed this post by Deborah Kurata last week on bringing data into your Silverlight app via Entity Frameworks... good detailed tutorial in VB and C#. Updating Data in a Silverlight Application: EF In Deborah Kurata's latest post, she is continuing with Entity Frameworks by demonstrating updating to the database... full source code will be produced in a later post. Fun with Silverlight and SharePoint 2010 Ribbon Control - Part 2 - An In Depth Look At The Ribbon Control Johnny Tordgeman has Part 2 of his Silverlight and Sharepoint 2010 Ribbon up... taking a deep-dive into the ribbon... great explanation of the attributes, code included. Geographic Coordinates Systems Roy Dallal has some Geo code up that's not necessarily Silverlight, but very cool if you're doing any GIS programming... ya gotta know the coordinate systems! Back button press when using webbrowser control in WP7 Jaime Rodriguez has a post up discussing the much-lamented back-button action in the certification requirements and how to deal with that in a web browser app. Multiplayer-enabling my Windows Phone 7 game: Day 1 Samuel Jack challenged himself to build a WP7 game in 3 days... now he's challenging himself to make it multiplayer in 3 days... this first hour-to-hour post is research of networking and an azure server-side solution. Multiplayer-enabling my Windows Phone 7 game: Day 2–Building a UI with XPF Day 2 for Samuel Jack getting the multiplayer portion of his game working in 3 days.. this day involves getting up-to-speed with XPF. How to Hotwire your WP7 Phone Battery Did you realize if you run your WP7 battery completely down that you can't charge it? James Ashley reports that circumstance, and how he resolved it. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Cream for March 20, 2010 -- #815

    - by Dave Campbell
    In this Issue: Andy Beaulieu(-2-, -3-), Alex Golesh, Damian Schenkelman, Adam Kinney(-2-), Jeremy Likness, Laurent Bugnion, and John Papa. Shoutouts: Adam Kinney has a good summary up of where to go for all the tools and toys: Install checklist for Silverlight 4 RC, Blend 4 Beta and Windows Phone Developer tools from MIX10 ... tons of links Laurent Bugnion had a few announcements at MIX10: MVVM Light V3 released at #MIX10, and he followed that with What’s new in MVVM Light V3 ... now for Windows Phone! Laurent Bugnion also has announced Sample code for my #mix10 talk online From SilverlightCream.com: Physics Games in Silverlight on Windows Phone 7 Andy Beaulieu has the Physics Helper working for WP7 already... read his post, check out all the links and get going on something fun... was great seeing you at MIX, too, Andy! Silverlight 4: GPU Accelerated PlaneProjection Andy Beaulieu has a comparison up of Plane Projection with and without the new GPU acceleration... be sure to read his notes section. Silverlight 4 PathListBox for Motion Path Animation Have you heard of the PathListBox? Well, showing is better than telling, so check out Andy Beaulieu's post on it Silverlight at Windows Phone 7 Alex Golesh has a quick overview on developing a Windows Phone 7 app in Silverlight using the new toys, and executiting it in the emulator Prism v2.1: Creating a Region Adapter for the Accordion control Damian Schenkelman shows how to use the Accordian control from the toolkit as a region in a Prism app. Expression Blend 4 Beta Feature Overview available for download Adam Kinney announced the presence of an Expression Blend whitepaper as well... you should go grab that too .toolbox – Free online Silverlight and Expression Blend training Want to improve your Silverlight chops or gain some Expression Blend chops? Check out .toolbox post that Adam Kinney posted Introducing the Visual State Aggregator Jeremy Likness describes the basic panel A/panel B problem, describes ways he and other folks have flipped between them, then describes his Visual State Aggregator ... and it's downloadable for you to give it a dance! Multithreading in Windows Phone 7 emulator: A bug Laurent Bugnion found a bug wit multi-threading on the Windows Phone emulator. He confirmed this with the team, and has a workaround you'll be needing... thanks Laurent. Silverlight Overview - Technical Whitepaper John Papa has reiterated the existence of this Silverlight 4 whitepaper ... it was updated this week, and we all should be aware of it. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Silverlight Cream for April 27, 2010 -- #849

    - by Dave Campbell
    In this Issue: Mike Snow, Kunal Chowdhury, Giorgetti Alessandro, Alexander Strauss, Corey Schuman, Kirupa, John Papa, Miro Miroslavov, Michael Washington, and Jeremy Likness. Shoutouts: Erik Mork and crew have posted their latest This Week In Silverlight April 23 2010 The Silverlight Team announced Microsoft releases Silverlight-powered Windows Intune beta Jesse Liberty has posted his UK and Ireland Slides and Links The Expression Blend and Design Blog reports a Minor Update to The Expression Blend 4 Release Candidate From SilverlightCream.com: Silverlight Tip of the Day #6 – Toast Notifications Mike Snow has Tip #6 up today and it's about Toast notifications in OOB apps: Restrictions, creation, showing, and the code. Silverlight Tutorials Chapter 2: Introduction to Silverlight Application Development Part 2 of Kunal Chowdhury's Introductory tutorial set is up ... he's covering how to create a Silverlight project, what's contained in it, and creating a User Control. Silverlight, M-V-VM ... and IoC - part 3 Giorgetti Alessandro has part 3 of his Silverlight, IOC, and MVVM series up... this one with an example using the code discussed previously. The project is on CodePlex, and he's not done with the series. Application Partitioning with MEF, Silverlight and Windows Azure – Part I Alexander Strauss is discussing Silverlight and MEF for loosely-coupled and partitioned apps. He's also using Azure in this discussion. geekSpeak Recording - Five Key Developer Features in Expression Blend with Corey Schuman Check out the latest geekSpeak on Channel 9 where Corey Schuman talks about the 5 key Developer Features in Expression Blend that will improve your productivity. Using the ChangePropertyAction Kirupa is discussing and demonstrating ChangePropertyAction. Check out the demo near the top of the post, then read how to do it, and download the source. 3 Free Silverlight Demos John Papa blogged about the 2 demos (with source) that have been updated to SL4, and a new one all by Microsoft Luminaries Karen Corby, Adam Kinney, Mark Rideout, Jesse Bishop, and John Papa: "ScrapBook", "HTML and Video Puzzle", and "Rich Notepad". Floating Visual Elements I like Miro Miroslavov's comment: "every Silverlight application “must” have some objects floating around in a quite 3D manner" :) ... well they do that on the CompletIT site, and this is part 2 of their explanation of how all that goodness works. MVVM – A Total Design Change Of Your Application With No Code With some Blend goodness, Michael Washington completely reorganizes the UI of an MVVM application without touching any code ... project included MVVM with Transaction and View Locator Example Jeremy Likness responded to reader requests and has an example up, with explanation, of marrying his last two posts: transactions with MVVM and View Model Locator. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • How do I simulate overprinting in Adobe Reader?

    - by Ben Everard
    On both Mac and Windows when I print a document there is an advanced screen that allows me to select an option called Simulate Overprinting, however such an option doesn't appear on the Ubuntu version. Wikipedia on overprinting: Overprinting refers to the process of printing one colour on top of another in reprographics. This is closely linked to the reprographic technique of 'trapping'. Another use of overprinting is to create a rich black (often regarded as a colour that is "blacker than black") by printing black over another dark colour. This is an issue for us, as we're trying to print documents that need flattening (this is what overprinting does). Am I missing something here, is there a way to enable overprinting on printed PDFs? Note: Please don't confuse simulate overprinting with overprint preview, of which doesn't apply when printing. Just to show you what I'm looking for, this is the Print > Advanced screen... And this is what I see on the Ubuntu screen, not no option for overprinting

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  • How do I create a fire sphere (fireball) in opengl? (opengl Visual C++)

    - by gn66
    I'm making an evil Pacman in OpenGL and I need to make my spheres look like a fireballs, does anyone know how I do that? And what material colour should I use? Also, is there a colour palette to change the colour of my materials? This is how I create a sphere: GLfloat mat_ambient[] = { 0.25, 0.25, 0.25, 1.0 }; GLfloat mat_diffuse[] = { 0.4, 0.4, 0.4, 1.0 }; GLfloat mat_specular[] = { 0.774597, 0.774597, 0.774597, 1.0 }; GLfloat mat_shine = 0.6; glMaterialfv (GL_FRONT, GL_AMBIENT, mat_ambient); glMaterialfv (GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv (GL_FRONT, GL_SPECULAR, mat_specular); glMaterialf (GL_FRONT, GL_SHININESS, mat_shine * 128); glPushMatrix(); glTranslatef(x,y,0); glutSolidSphere(size, 20, 10); glFlush(); glPopMatrix();

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  • Ubuntu 12.04 appearance

    - by lightnight
    I have just updated my old Ubuntu 11.04 to the 12.04 version and I really dislike the new appearance. Is there anyway I can go back to the old appearance? Here are some examples of the things I would like to change: the omnipresent orange colour (for example, colour of the folders, colour of the little x on the top right of the window etc.); used to be blue. The icons on the right vertical bar are unreadable: the dropbox icon has become a light grey shapeless blob, the battery icon does not indicate, as it did before, when electricity is plugged in and when it isn't. everything is just grey and orange (I chose the Radiance theme, the other ones are even worse). There used to be a lot of options choosing the shape of the windows and so on, where has all that gone? Thanks for your help!

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  • Silverlight Cream for April 21, 2010 -- #843

    - by Dave Campbell
    In this Issue: Alan Beasley, Roboblob, SilverLaw, Mike Snow, and Chris Koenig. Shoutouts: Ozymandias has a discussion up: The Three Pillars of Xbox Live on Windows Phone John Papa announced that Silverlight 4 is now on WebPI: Get Silverlight 4 – Simplified! Dan Wahlin posted the code and material from DevConnections: Code from my DevConnections Talks and Workshop Tim Heuer has a good deal posted from GoDaddy: Get a Silverlight XAP signing certificate for cheap thanks to GoDaddy From SilverlightCream.com: ListBox Styling (Part2-ControlTemplate) in Expression Blend & Silverlight Alan Beasley is back with part 2 of his ListBox styling tutorial adventure in Expression Blend... this looks like some of the stuff I was getting close to in Win32 a bunch of years back... great stuff... thanks Alan! Unit Testing Modal Dialogs in MVVM and Silverlight 4 Roboblob responds to some feedback with an expansion on his previous post with the addition of some Unit Testing. ChildWindowResizeBehavior - Silverlight 4 Blend 4 RC design time support SilverLaw has a short post about a behavior he has available at the Expression Gallery that resizes a child window with the Mouse Wheel, and also has Design-time support in Blend. Tip of the Day #111 – How to Configure your Silverlight App to run in Elevated Trust Mode Mike Snow has his latest tip up, and this one is on both ends of of the Elevated Trust Mode of OOB ... how to set it, and what your user experience is like. WP7 Part 2 – Working with Data Chris Koenig has part 2 of his WP7 exploration up ... he's tackling Nerd Dinner and pulling down Odata. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Clipping polygons in XNA with stencil (not using spritebatch)

    - by Blau
    The problem... i'm drawing polygons, in this case boxes, and i want clip children polygons with its parent's client area. // Class Region public void Render(GraphicsDevice Device, Camera Camera) { int StencilLevel = 0; Device.Clear( ClearOptions.Stencil, Vector4.Zero, 0, StencilLevel ); Render( Device, Camera, StencilLevel ); } private void Render(GraphicsDevice Device, Camera Camera, int StencilLevel) { Device.SamplerStates[0] = this.SamplerState; Device.Textures[0] = this.Texture; Device.RasterizerState = RasterizerState.CullNone; Device.BlendState = BlendState.AlphaBlend; Device.DepthStencilState = DepthStencilState.Default; Effect.Prepare(this, Camera ); Device.DepthStencilState = GlobalContext.GraphicsStates.IncMask; Device.ReferenceStencil = StencilLevel; foreach ( EffectPass pass in Effect.Techniques[Technique].Passes ) { pass.Apply( ); Device.DrawUserIndexedPrimitives<VertexPositionColorTexture>( PrimitiveType.TriangleList, VertexData, 0, VertexData.Length, IndexData, 0, PrimitiveCount ); } foreach ( Region child in ChildrenRegions ) { child.Render( Device, Camera, StencilLevel + 1 ); } Effect.Prepare( this, Camera ); // This does not works Device.BlendState = GlobalContext.GraphicsStates.NoWriteColor; Device.DepthStencilState = GlobalContext.GraphicsStates.DecMask; Device.ReferenceStencil = StencilLevel; // This should be +1, but in that case the last drrawed is blue and overlap all foreach ( EffectPass pass in Effect.Techniques[Technique].Passes ) { pass.Apply( ); Device.DrawUserIndexedPrimitives<VertexPositionColorTexture>( PrimitiveType.TriangleList, VertexData, 0, VertexData.Length, IndexData, 0, PrimitiveCount ); } } public static class GraphicsStates { public static BlendState NoWriteColor = new BlendState( ) { ColorSourceBlend = Blend.One, AlphaSourceBlend = Blend.One, ColorDestinationBlend = Blend.InverseSourceAlpha, AlphaDestinationBlend = Blend.InverseSourceAlpha, ColorWriteChannels1 = ColorWriteChannels.None }; public static DepthStencilState IncMask = new DepthStencilState( ) { StencilEnable = true, StencilFunction = CompareFunction.Equal, StencilPass = StencilOperation.IncrementSaturation, }; public static DepthStencilState DecMask = new DepthStencilState( ) { StencilEnable = true, StencilFunction = CompareFunction.Equal, StencilPass = StencilOperation.DecrementSaturation, }; } How can achieve this? EDIT: I've just relized that the NoWriteColors.ColorWriteChannels1 should be NoWriteColors.ColorWriteChannels. :) Now it's clipping right. Any other approach?

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  • Component-wise GLSL vector branching

    - by Gustavo Maciel
    I'm aware that it usually is a BAD idea to operate separately on GLSL vec's components separately. For example: //use instrinsic functions, they do the calculation on 4 components at a time. float dot = v1.x*v2.x + v1.y * v2.y + v1.z * v2.z; //NEVER float dot = dot(v1, v2); //YES //Multiply one by one is not good too, since the ALU can do the 4 components at a time too. vec3 mul = vec3(v1.x * v2.x, v1.y * v2.y, v1.z * v2.z); //NEVER vec3 mul = v1 * v2; I've been struggling thinking, are there equivalent operations for branching? For example: vec4 Overlay(vec4 v1, vec4 v2, vec4 opacity) { bvec4 less = lessThan(v1, vec4(0.5)); vec4 blend; for(int i = 0; i < 4; ++i) { if(less[i]) blend[i] = 2.0 * v1[i]*v2[i]; else blend[i] = 1.0 - 2.0 * (1.0 - v1[i])*(1.0 - v2[i]); } return v1 + (blend-v1)*opacity; } This is a Overlay operator that works component wise. I'm not sure if this is the best way to do it, since I'm afraid these for and if can be a bottleneck later. Tl;dr, Can I branch component wise? If yes, how can I optimize that Overlay function with it?

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  • Generate texture for a heightmap

    - by James
    I've recently been trying to blend multiple textures based on the height at different points in a heightmap. However i've been getting poor results. I decided to backtrack and just attempt to recreate one single texture from an SDL_Surface (i'm using SDL) and just send that into opengl. I'll put my code for creating the texture and reading the colour values. It is a 24bit TGA i'm loading, and i've confirmed that the rest of my code works because i was able to send the surfaces pixels directly to my createTextureFromData function and it drew fine. struct RGBColour { RGBColour() : r(0), g(0), b(0) {} RGBColour(unsigned char red, unsigned char green, unsigned char blue) : r(red), g(green), b(blue) {} unsigned char r; unsigned char g; unsigned char b; }; // main loading code SDLSurfaceReader* reader = new SDLSurfaceReader(m_renderer); reader->readSurface("images/grass.tga"); // new texture unsigned char* newTexture = new unsigned char[reader->m_surface->w * reader->m_surface->h * 3 * reader->m_surface->w]; for (int y = 0; y < reader->m_surface->h; y++) { for (int x = 0; x < reader->m_surface->w; x += 3) { int index = (y * reader->m_surface->w) + x; RGBColour colour = reader->getColourAt(x, y); newTexture[index] = colour.r; newTexture[index + 1] = colour.g; newTexture[index + 2] = colour.b; } } unsigned int id = m_renderer->createTextureFromData(newTexture, reader->m_surface->w, reader->m_surface->h, RGB); // functions for reading pixels RGBColour SDLSurfaceReader::getColourAt(int x, int y) { Uint32 pixel; Uint8 red, green, blue; RGBColour rgb; pixel = getPixel(m_surface, x, y); SDL_LockSurface(m_surface); SDL_GetRGB(pixel, m_surface->format, &red, &green, &blue); SDL_UnlockSurface(m_surface); rgb.r = red; rgb.b = blue; rgb.g = green; return rgb; } // this function taken from SDL documentation // http://www.libsdl.org/cgi/docwiki.cgi/Introduction_to_SDL_Video#getpixel Uint32 SDLSurfaceReader::getPixel(SDL_Surface* surface, int x, int y) { int bpp = m_surface->format->BytesPerPixel; Uint8 *p = (Uint8*)m_surface->pixels + y * m_surface->pitch + x * bpp; switch (bpp) { case 1: return *p; case 2: return *(Uint16*)p; case 3: if (SDL_BYTEORDER == SDL_BIG_ENDIAN) return p[0] << 16 | p[1] << 8 | p[2]; else return p[0] | p[1] << 8 | p[2] << 16; case 4: return *(Uint32*)p; default: return 0; } } I've been stumped at this, and I need help badly! Thanks so much for any advice.

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  • Pulling My Hair Out - PHP Forms [migrated]

    - by Joe Turner
    Hello and good morning to all. This is my second post on this subject because the first time, things still didn't work and I have now literally been trying to solve this for about 4/5 days straight... I have a file, called 'edit.php', in this file is a form; <?php $company = $_POST["company"]; $phone = $_POST["phone"]; $colour = $_POST["colour"]; $email = $_POST["email"]; $website = $_POST["website"]; $video = $_POST["video"]; $image = $_POST["image"]; $extension = $_POST["extension"]; ?> <form method="post" action="generate.php"><br> <input type="text" name="company" placeholder="Company Name" /><br> <input type="text" name="slogan" placeholder="Slogan" /><br> <input class="color {required:false}" name="colour" placeholder="Company Colour"><br> <input type="text" name="phone" placeholder="Phone Number" /><br> <input type="text" name="email" placeholder="Email Address" /><br> <input type="text" name="website" placeholder="Full Website - Include http://" /><br> <input type="text" name="video" placeholder="Video URL" /><br> <input type="submit" value="Generate QuickLinks" style="background:url(images/submit.png) repeat-x; color:#FFF"/> </form> Then, when the form is submitted, it creates a file using the variables that have been input. The fields that have been filled in go on to become links, I need to be able to say 'if a field is left blank, then put 'XXX' in as a default value'. Does anyone have any ideas? I really think I have tried everything. I'll put below a snippet from the .php file that generates the links... <?php $File = "includes/details.php"; $Handle = fopen($File, 'w'); ?> <?php $File = "includes/details.php"; $Handle = fopen($File, 'w'); $Data = "<div id='logo'> <img width='270px' src='images/logo.png'/img> <h1 style='color:#$_POST[colour]'>$_POST[company]</h1> <h2>$_POST[slogan]</h2> </div> <ul> <li><a class='full-width button' href='tel:$_POST[phone]'>Phone Us</a></li> <li><a class='full-width button' href='mailto:$_POST[email]'>Email Us</a></li> <li><a class='full-width button' href='$_POST[website]'>View Full Website</a></li> <li><a class='full-width button' href='$_POST[video]'>Watch Us</a></li> </ul> \n"; I really do look forward to any response...

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  • pchart pie chart legend and graph not correlating

    - by madphp
    Hi, I have ten values in the dataset, numbers 1 - 10 and corresponding values. Some of the values are coming back as zero, so they are not added to the chart, BUT, the legend is still listing 1 - 10. Because theres values missing in the chart, the colour coding is knocked off. ie Item 1, has a value of zero, its passed over in the chart, the colour in the legend is red, Item 2, has a value of 4, the percentage is calculated, and the chart gives it the colour red which is the colour for item 1 in the legend. Hope that makes sense. How can I print the legend just for the values that are displayed in the chart? --Mark

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  • Objective-C RGB to HSB

    - by Johannes Jensen
    Let's say I've got the colour FF0000, which is red. Finding a darker colour is easy, I just type maybe CC instead of the FF, but let's say I've got the colour AE83FC, which is a complicated colour, how the heck would I find a lighter or darker version of it automatically? I figured the easy way to do this is to convert my RGB to HSB [Hue, Saturation, Brightness] How would I do that in Objective-C? Let's say I've got a RGB which is: 1.0, 0.0, 0.0. That's red. CGFloat r = 1.0; CGFloat g = 0.0; CGfloat b = 0.0; How would I convert that to HSB and then transform the colors and make it go back to RGB to I can use CGContextRGBSetFillColor? Are there any HSB functions? Please help. :)

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  • adding opacity's of the PhoneAccentBrush to a Silverlight toolbox pie chart

    - by Doug
    Hi there, i am working on a windows phone application and i am using the pie chart - i am relatively new to the silverlight control toolbox. i want to make my pie chart use different opacity's of the PhoneAccentBrush as its colour pallete. (ie if the accent colour is green then i use the green and then a 0.8,0.6,0.4,0.2 opacity of the colour as my pie charts pallete) i have tried a few things, but none of them worked - has anyone accomplished this and if so how? thanks in advance Doug

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  • getSelection & surroundContents across multiple tags

    - by lethalbody
    Hi, I've got a script that changes the background colour of text that has been selected. However i'm encountering an issue when the text is selected across multiple elements/tags. The code that i've got is: var text = window.getSelection().getRangeAt(0); var colour = document.createElement("hlight"); colour.style.backgroundColor = "Yellow"; text.surroundContents(colour); And the error being output is: Error: The boundary-points of a range does not meet specific requirements. = NS_ERROR_DOM_RANGE_BAD_BOUNDARYPOINTS_ERR Line: 7 I believe this is to do with the getRange() function though i'm not too sure how to proceed since I am a beginner at javascript. Is there any other way I can replicate what I am trying to achieve? Many thanks.

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  • HLSL tex2d sampler seemingly returning incorrect values; why?

    - by BlueNovember
    Hello all, I have code that needs to render regions of my object differently depending on their location. I am trying to use a colour map to define these regions, then get a value (0-14) representing this region by sampling the texture. The problem is when I sample from my colour map, I get collisions. Ie, two regions with different colours in the colourmap get the same value returned from the sampler. I've tried various formats of my colour map. I set the colours for each region to be "5" apart in each case; Indexed colour RGB, RGBA: region 1 will have RGB 5,5,5. region 2 will have RGB 10,10,10 and so on. HSV Greyscale: region 1 will have HSV 0,0,5. region 2 will have HSV 0,0,10 and so on. The tex2D sampler returns a value [0..1]. To get the "region number" I multiply this by 100 and divide by 5, expecting a number [0..20]. (But currently only using 0-14) I am using Shader Model 2 and FX Composer. //Colour map texture gColourmapTexture < string ResourceName = "Globe_Colourmap_Regions_Greyscale.png"; string ResourceType = "2D"; >; sampler2D gColourmapSampler : register(s1) = sampler_state { Texture = <gColourmapTexture>; #if DIRECT3D_VERSION >= 0xa00 Filter = MIN_MAG_MIP_LINEAR; #else /* DIRECT3D_VERSION < 0xa00 */ MinFilter = Linear; MipFilter = Linear; MagFilter = Linear; #endif /* DIRECT3D_VERSION */ AddressU = Clamp; AddressV = Clamp; }; ... //Then later, in a method float region = tex2D(gColourmapSampler,In.UV).x; //at this point I do not think it matters which of xyz components I pick; even in HSV they're all the same for my image. region *= 100; //Now in range [0..100] region /= 5; //Now in range [0..20] float3 levels[21]; //*Code populating "levels" array with what is essentially colour information * levels[1] = ... levels[2] = ... //Chose which level this region has, by looking up its region number float3 Level = levels[region];

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  • Public class DiscoLight help

    - by luvthug
    Hi All, If some one can point me in the right direction for this code for my assigment I would really appreciate it. I have pasted the whole code that I need to complete but I need help with the following method public void changeColour(Circle aCircle) which is meant to allow to change the colour of the circle randomly, if 0 comes the light of the circle sgould change to red, 1 for green and 2 for purple. public class DiscoLight { /* instance variables */ private Circle light; // simulates a circular disco light in the Shapes window private Random randomNumberGenerator; /** * Default constructor for objects of class DiscoLight */ public DiscoLight() { super(); this.randomNumberGenerator = new Random(); } /** * Returns a randomly generated int between 0 (inclusive) * and number (exclusive). For example if number is 6, * the method will return one of 0, 1, 2, 3, 4, or 5. */ public int getRandomInt(int number) { return this.randomNumberGenerator.nextInt(number); } /** * student to write code and comment here for setLight(Circle) for Q4(i) */ public void setLight(Circle aCircle) { this.light = aCircle; } /** * student to write code and comment here for getLight() for Q4(i) */ public Circle getLight() { return this.light; } /** * Sets the argument to have a diameter of 50, an xPos * of 122, a yPos of 162 and the colour GREEN. * The method then sets the receiver's instance variable * light, to the argument aCircle. */ public void addLight(Circle aCircle) { //Student to write code here, Q4(ii) this.light = aCircle; this.light.setDiameter(50); this.light.setXPos(122); this.light.setYPos(162); this.light.setColour(OUColour.GREEN); } /** * Randomly sets the colour of the instance variable * light to red, green, or purple. */ public void changeColour(Circle aCircle) { //student to write code here, Q4(iii) if (getRandomInt() == 0) { this.light.setColour(OUColour.RED); } if (this.getRandomInt().equals(1)) { this.light.setColour(OUColour.GREEN); } else if (this.getRandomInt().equals(2)) { this.light.setColour(OUColour.PURPLE); } } /** * Grows the diameter of the circle referenced by the * receiver's instance variable light, to the argument size. * The diameter is incremented in steps of 2, * the xPos and yPos are decremented in steps of 1 until the * diameter reaches the value given by size. * Between each step there is a random colour change. The message * delay(anInt) is used to slow down the graphical interface, as required. */ public void grow(int size) { //student to write code here, Q4(iv) } /** * Shrinks the diameter of the circle referenced by the * receiver's instance variable light, to the argument size. * The diameter is decremented in steps of 2, * the xPos and yPos are incremented in steps of 1 until the * diameter reaches the value given by size. * Between each step there is a random colour change. The message * delay(anInt) is used to slow down the graphical interface, as required. */ public void shrink(int size) { //student to write code here, Q4(v) } /** * Expands the diameter of the light by the amount given by * sizeIncrease (changing colour as it grows). * * The method then contracts the light until it reaches its * original size (changing colour as it shrinks). */ public void lightCycle(int sizeIncrease) { //student to write code here, Q4(vi) } /** * Prompts the user for number of growing and shrinking * cycles. Then prompts the user for the number of units * by which to increase the diameter of light. * Method then performs the requested growing and * shrinking cycles. */ public void runLight() { //student to write code here, Q4(vii) } /** * Causes execution to pause by time number of milliseconds */ private void delay(int time) { try { Thread.sleep(time); } catch (Exception e) { System.out.println(e); } } }

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  • HLSL tex2d sampler seemingly using inconsistent rounding; why?

    - by RJFalconer
    Hello all, I have code that needs to render regions of my object differently depending on their location. I am trying to use a colour map to define these regions. The problem is when I sample from my colour map, I get collisions. Ie, two regions with different colours in the colourmap get the same value returned from the sampler. I've tried various formats of my colour map. I set the colours for each region to be "5" apart in each case; Indexed colour RGB, RGBA: region 1 will have RGB 5%,5%,5%. region 2 will have RGB 10%,10%,10% and so on. HSV Greyscale: region 1 will have HSV 0,0,5%. region 2 will have HSV 0,0,10% and so on. (Values selected in The Gimp) The tex2D sampler returns a value [0..1]. [ I then intend to derive an int array index from region. Code to do with that is unrelated, so has been removed from the question ] float region = tex2D(gColourmapSampler,In.UV).x; Sampling the "5%" colour gave a "region" of 0.05098 in hlsl. From this I assume the 5% represents 5/100*255, or 12.75, which is rounded to 13 when stored in the texture OR when sampled by the sampler; can't tell which. (Reasoning: 0.05098 * 255 ~= 13) By this logic, the 50% should be stored as 127.5. Sampled, I get 0.50196 which implies it was stored as 128. the 70% should be stored as 178.5. Sampled, I get 0.698039, which implies it was stored as 178. What rounding is going on here? (127.5 becomes 128, 178.5 becomes 178 ?!) Edit: OK, http://en.wikipedia.org/wiki/Bankers_rounding#Round_half_to_even Apparently this is "banker's rounding". Is this really what HLSL samplers use? I am using Shader Model 2 and FX Composer. This is my sampler declaration; //Colour map texture gColourmapTexture < string ResourceName = "Globe_Colourmap_Regions_Greyscale.png"; string ResourceType = "2D"; >; sampler2D gColourmapSampler : register(s1) = sampler_state { Texture = <gColourmapTexture>; #if DIRECT3D_VERSION >= 0xa00 Filter = MIN_MAG_MIP_LINEAR; #else /* DIRECT3D_VERSION < 0xa00 */ MinFilter = Linear; MipFilter = Linear; MagFilter = Linear; #endif /* DIRECT3D_VERSION */ AddressU = Clamp; AddressV = Clamp; };

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  • Drawing single pixel in Quartz

    - by wwrob
    I have an array of CGPoints, and I'd like to fill the whole screen with colours, the colour of each pixel depending on the total distance to each of the points in the array. The natural way to do this is to, for each pixel, compute the total distance, and turn that into a colour. Questions follow: 1) How can I colour a single pixel in Quartz? I've been thinking of making 1 by 1 rectangles. 2) Are there better, more efficient ways to achieve this effect?

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