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  • Limit YouTube to specific videos

    - by Neil Barnwell
    A friend of mine has a son who likes to watch YouTube, but she would like to limit his access with some sort of white-list. This is more strict than simple over-18 stuff. I've thought of a static webpage with embedded video players on, but I don't know how to limit general search access to YouTube.

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  • Will this netbook allow me to run mutiple programs without issues?

    - by erik
    I'd like to use a netbook to run mIRC skype Messenger pretty much all at the same time. It this netbook a good choice? http://www.notebookzone.co.za/default/sony-vpc-w216.html Quick Overview Intel Atom N450 (1.66GHz), 2GB Ram /320GB HDD, 10.1" LCD-WXGA:1366 x 768, LED, Windows 7 Starter 32bit, Only 1.19Kg, Web Cam, Wireless, BT The combination of high-resolution wide 10.1" screen and Isolation Keyboard helps to put the Internet at your fingertips anytime you want it. Available in : white / pink / blue / brown

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  • Vlan on astaro 120

    - by Crash893
    (I'm not 100% sure where networking/router questions go this is my best guess) I have a astaro (sophos) white UTM 120 router for work I also have about 11 Voip phones with an externaly hosted pbx (company name = pingtone) Is there any advantage to setting up the phones on a vlan vs making a qos rule that all traffic to my tftp server gets right of way? networking is still a little soft to me Thanks

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  • Application icons not displayed correctly

    - by shadeMe
    Lately, 7Stacks and Standalone Stacks have been unable to display the icon for any .exe file. They simply show the default icon instead (the white file icon). Rebuilding/fixing the icon cache haven't fixed the problem. Any ides on how to ? I use Windows 7.

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  • Adjust colours in a PDF

    - by user1035
    I'd like to make colour adjustments to an existing PDF file, the equivalent of Photoshop's adjustments, and save a new version with the altered colours. I'm after more than a colourspace conversion. I'd like to take a file that's black and white, and convert it into green, blue, yellow, pink etc versions. It's upwards of 100 pages full of text and graphic elements, so doing it by hand isn't really an option. Is there any way of achieving this?

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  • How can I identify a mystery tray icon in Windows 7?

    - by Mark
    A new icon has appeared in my tray in Windows 7 recently - a black square with a white A in it: It doesn't have any tooltip or right-click context menu so I haven't been able to identify which process it belongs to. I tried using the "Find Window's Process" tool in Process Explorer but that won't identify individual tray icons. Short of killing processes until it disappears, is there a good way to identify which process this icon belongs to?

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  • Hashed pattern in bargraphs - MS excel

    - by user1189851
    I am drawing graphs for a paper that supports only black and white graphs. I need to show more than 3 histograms and want to have different patterns on them like hash, dotted, double hashed etc instead of different colors in the legend. I am using MS Excel 2007. I tried but dont find a way except for the option available in design tab that I find when I double click on the chart area( These are shades of grey color and I want patterns like hashing, dots etc). Thanks in advance,

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  • windows 7 start menu showing incorrect data

    - by madmik3
    Hi, I've tried to rebuild my search index but it does not seem to help. When i search for anything even command I either get an empty list or a list of short cuts with the names Programs Documents Files ... They all have the default white paper icon. If I click on them I get an error message that says Internet security settings prevented one or more files from being opened. Any ideas? thanks

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  • WPF ComboBox Binding breaks when using ControlTemplate

    - by Mitch
    I have a WPF ComboBox that has been working fine until I recently created a ControlTemplate for it to enable me to change the color of the DropDown arrow. The ComboBox still works correctly except the Bound Text value now just shows the name of the Business Object rather than the bound value. I guess that binding like Text="{Binding Path=CaseDateRange}" no longer works when using a ControlTemplate, yet the ItemsSource binding on the dropdown seems to still work fine. Can anyone offer some help with how I need to change my binding when using a ControlTemplate. The code for the ControlTemplate and ComboBox is as follows <ControlTemplate x:Key="ComboBoxControlTemplate1" TargetType="{x:Type ComboBox}"> <Grid x:Name="MainGrid" SnapsToDevicePixels="True"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> <ColumnDefinition MinWidth="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}" Width="0"/> </Grid.ColumnDefinitions> <Popup x:Name="PART_Popup" AllowsTransparency="True" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{DynamicResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom" OpacityMask="#FF2A3D64"> <Microsoft_Windows_Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=MainGrid}"> <Border x:Name="DropDownBorder" BorderBrush="White" BorderThickness="1" CornerRadius="3" Background="{DynamicResource DialogDarkBlue}"> <ScrollViewer x:Name="DropDownScrollViewer" > <Grid RenderOptions.ClearTypeHint="Enabled"> <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0"> <Rectangle x:Name="OpaqueRect" Fill="{Binding Background, ElementName=DropDownBorder}" Height="{Binding ActualHeight, ElementName=DropDownBorder}" Width="{Binding ActualWidth, ElementName=DropDownBorder}"/> </Canvas> <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> </Grid> </ScrollViewer> </Border> </Microsoft_Windows_Themes:SystemDropShadowChrome> </Popup> <ToggleButton BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Foreground="White"> <ToggleButton.Style> <Style TargetType="{x:Type ToggleButton}"> <Setter Property="OverridesDefaultStyle" Value="True"/> <Setter Property="IsTabStop" Value="False"/> <Setter Property="Focusable" Value="False"/> <Setter Property="ClickMode" Value="Press"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ToggleButton}"> <Microsoft_Windows_Themes:ButtonChrome x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderPressed="{TemplateBinding IsPressed}" SnapsToDevicePixels="True"> <Grid HorizontalAlignment="Right" Width="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"> <Path x:Name="Arrow" Data="M0,0L3.5,4 7,0z" Fill="White" HorizontalAlignment="Center" Margin="3,1,0,0" VerticalAlignment="Center"/> </Grid> </Microsoft_Windows_Themes:ButtonChrome> <ControlTemplate.Triggers> <Trigger Property="IsChecked" Value="True"> <Setter Property="RenderPressed" TargetName="Chrome" Value="True"/> </Trigger> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Fill" TargetName="Arrow" Value="#FFAFAFAF"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> </ToggleButton.Style> </ToggleButton> <ContentPresenter ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" Content="{TemplateBinding SelectionBoxItem}" ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="False" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/> </Grid> <ControlTemplate.Triggers> <Trigger Property="HasDropShadow" SourceName="PART_Popup" Value="True"> <Setter Property="Margin" TargetName="Shdw" Value="0,0,5,5"/> <Setter Property="Color" TargetName="Shdw" Value="#71000000"/> </Trigger> <Trigger Property="HasItems" Value="False"> <Setter Property="Height" TargetName="DropDownBorder" Value="95"/> </Trigger> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/> <Setter Property="Background" Value="#FFF4F4F4"/> </Trigger> <Trigger Property="IsGrouping" Value="True"> <Setter Property="ScrollViewer.CanContentScroll" Value="False"/> </Trigger> <Trigger Property="CanContentScroll" SourceName="DropDownScrollViewer" Value="False"> <Setter Property="Canvas.Top" TargetName="OpaqueRect" Value="{Binding VerticalOffset, ElementName=DropDownScrollViewer}"/> <Setter Property="Canvas.Left" TargetName="OpaqueRect" Value="{Binding HorizontalOffset, ElementName=DropDownScrollViewer}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> And the ComboBox is <ComboBox x:Name="cboSelectedCase" Text="{Binding Path=CaseDateRange}" DisplayMemberPath="CaseDateRange" SelectedValuePath="CaseID" Template="{DynamicResource ComboBoxControlTemplate1}" />

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  • Am I going about this the right way?

    - by Psytronic
    Hey Guys, I'm starting a WPF project, and just finished the base of the UI, it seems very convoluted though, so I'm not sure if I've gone around laying it out in the right way. I don't want to get to start developing the back-end and realise that I've done the front wrong, and make life harder for myself. Coming from a background of <DIV's and CSS to style this is a lot different, and really want to get it right from the start. Essentially it's a one week calendar (7 days, Mon-Sunday, defaulting to the current week.) Which will eventually link up to a DB and if I have an appointment for something on this day it will show it in the relevant day. I've opted for a Grid rather than ListView because of the way it will work I will not be binding the results to a collection or anything along those lines. Rather I will be filling out a Combo box within the canvas for each day (yet to be placed in the code) for each event and on selection it will show me further details. XAML: <Window x:Class="WOW_Widget.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:Extensions="clr-namespace:WOW_Widget" DataContext="{Binding RelativeSource={RelativeSource Self}}" Title="Window1" Height="239" Width="831" <Window.Resources <LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1" <GradientBrush.GradientStops <GradientStopCollection <GradientStop Offset="1.0" Color="White"/ <GradientStop Offset="0.0" Color="LightSlateGray"/ </GradientStopCollection </GradientBrush.GradientStops </LinearGradientBrush <LinearGradientBrush x:Key="grdDayHeader" StartPoint="0,0" EndPoint="0,1" <GradientBrush.GradientStops <GradientStopCollection <GradientStop Offset="0.0" Color="Peru" / <GradientStop Offset="1.0" Color="White" / </GradientStopCollection </GradientBrush.GradientStops </LinearGradientBrush <LinearGradientBrush x:Key="grdToday" StartPoint="0,0" EndPoint="0,1" <GradientBrush.GradientStops <GradientStopCollection <GradientStop Offset="0.0" Color="LimeGreen"/ <GradientStop Offset="1.0" Color="DarkGreen" / </GradientStopCollection </GradientBrush.GradientStops </LinearGradientBrush <Style TargetType="{x:Type GridViewColumnHeader}" <Setter Property="Background" Value="Khaki" / </Style <Style x:Key="DayHeader" TargetType="{x:Type Label}" <Setter Property="Background" Value="{StaticResource grdDayHeader}" / <Setter Property="Width" Value="111" / <Setter Property="Height" Value="25" / <Setter Property="HorizontalContentAlignment" Value="Center" / </Style <Style x:Key="DayField" <Setter Property="Canvas.Width" Value="111" / <Setter Property="Canvas.Height" Value="60" / <Setter Property="Canvas.Background" Value="White" / </Style <Style x:Key="Today" <Setter Property="Canvas.Background" Value="{StaticResource grdToday}" / </Style <Style x:Key="CalendarColSpacer" <Setter Property="Canvas.Width" Value="1" / <Setter Property="Canvas.Background" Value="Black" / </Style <Style x:Key="CalendarRowSpacer" <Setter Property="Canvas.Height" Value="1" / <Setter Property="Canvas.Background" Value="Black" / </Style </Window.Resources <Grid Background="{StaticResource NormalBrush}" <Border BorderBrush="Black" BorderThickness="1" Width="785" Height="86" Margin="12,12,12,104" <Canvas Height="86" Width="785" VerticalAlignment="Top" <Grid <Grid.ColumnDefinitions <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / <ColumnDefinition / </Grid.ColumnDefinitions <Grid.RowDefinitions <RowDefinition / <RowDefinition / <RowDefinition / </Grid.RowDefinitions <Label Grid.Column="0" Grid.Row="0" Content="Monday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="1" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource CalendarColSpacer}" / <Label Grid.Column="2" Grid.Row="0" Content="Tuesday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="3" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource CalendarColSpacer}" / <Label Grid.Column="4" Grid.Row="0" Content="Wednesday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="5" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource CalendarColSpacer}" / <Label Grid.Column="6" Grid.Row="0" Content="Thursday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="7" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource CalendarColSpacer}" / <Label Grid.Column="8" Grid.Row="0" Content="Friday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="9" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource CalendarColSpacer}" / <Label Grid.Column="10" Grid.Row="0" Content="Saturday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="11" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource CalendarColSpacer}" / <Label Grid.Column="12" Grid.Row="0" Content="Sunday" Style="{StaticResource DayHeader}" / <Canvas Grid.Column="0" Grid.ColumnSpan="13" Grid.Row="1" Style="{StaticResource CalendarRowSpacer}" / <Canvas Grid.Column="0" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblMondayDate" / </Canvas <Canvas Grid.Column="2" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblTuesdayDate" / </Canvas <Canvas Grid.Column="4" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblWednesdayDate" / </Canvas <Canvas Grid.Column="6" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblThursdayDate" / </Canvas <Canvas Grid.Column="8" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblFridayDate" / </Canvas <Canvas Grid.Column="10" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblSaturdayDate" / </Canvas <Canvas Grid.Column="12" Grid.Row="2" Margin="0" Style="{StaticResource DayField}" <Label Name="lblSundayDate" / </Canvas </Grid </Canvas </Border <Canvas Height="86" HorizontalAlignment="Right" Margin="0,0,12,12" Name="canvas1" VerticalAlignment="Bottom" Width="198"</Canvas </Grid </Window CS: public partial class Window1 : Window { private DateTime today = new DateTime(); private Label[] Dates = new Label[7]; public Window1() { DateTime start = today = DateTime.Now; int day = (int)today.DayOfWeek; while (day != 1) { start = start.Subtract(new TimeSpan(1, 0, 0, 0)); day--; } InitializeComponent(); Dates[0] = lblMondayDate; Dates[1] = lblTuesdayDate; Dates[2] = lblWednesdayDate; Dates[3] = lblThursdayDate; Dates[4] = lblFridayDate; Dates[5] = lblSaturdayDate; Dates[6] = lblSundayDate; FillWeek(start); } private void FillWeek(DateTime start) { for (int d = 0; d < Dates.Length; d++) { TimeSpan td = new TimeSpan(d, 0, 0, 0); DateTime _day = start.Add(td); if (_day.Date == today.Date) { Canvas dayCanvas = (Canvas)Dates[d].Parent; dayCanvas.Style = (Style)this.Resources["Today"]; } Dates[d].Content = (int)start.Add(td).Day; } } } Thanks for any tips you guys can give Psytronic

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  • Rails, gmail: howto get plain/text from body

    - by atmorell
    Hello, I am loading am email with IMAP and parsing it with mail. This works very well, however the mail.body.decoded field contains a lot of formatting. How do I dig out the plain/txt body of the email - ignore attachements, formatting etc. It works fine if I try with an email without html. source = imap.uid_fetch(uid, ['RFC822']).first.attr['RFC822'] mail = Mail.new(source) This body content looks like this: Mail::Body:0x7f36ed468270 @epilogue="", @boundary="_004_4C49171DCB8C4540844E69DD39FDD98Ffirm_", @encoding="7bit", @raw_source="--_004_4C49171DCB8C4540844E69DD39FDD98Ffirm_\r\nContent-Type: multipart/alternative;\r\n\tboundary=\"_000_4C49171DCB8C4540844E69DD39FDD98Ffirm_\"\r\n\r\n--_000_4C49171DCB8C4540844E69DD39FDD98Ffirm_\r\nContent-Type: text/plain; charset=\"iso-8859-1\"\r\nContent-Transfer-Encoding: quoted-printable\r\n\r\ndasdsasda\r\n\r\n\r\n\r\nMed venlig hilsen / Med V=E4nlig H=E4lsning / Best Regards\r\r\nAsbj=F8rn Toke Morell. .\r\n+45 7020 0160\r\n+45 2152 0015\r\n[cid:[email protected]]\r\nhttp://www..dk\r\n\r\n\r\n--_000_4C49171DCB8C4540844E69DD39FDD98Ffirm_\r\nContent-Type: text/html; charset=\"iso-8859-1\"\r\nContent-Transfer-Encoding: quoted-printable\r\n\r\n<html>headheadbody style3D"word-wrap: break-word; -webkit-nbsp-mode:=\r\n space; -webkit-line-break: after-white-space; ">dasdsasda<br><div apple-co=\r\nntent-edited=3D"true">\r\n<span class=3D"Apple-style-span" style=3D"border-collapse: separate; color:=\r\n rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: norma=\r\nl; font-variant: normal; font-weight: normal; letter-spacing: normal; line-=\r\nheight: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transf=\r\norm: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-borde=\r\nr-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-te=\r\nxt-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-tex=\r\nt-stroke-width: 0px; "><span class=3D"Apple-style-span" style=3D"font-famil=\r\ny: Calibri, sans-serif; font-size: 15px; "><span class=3D"Apple-style-span"=\r\n style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: Helv=\r\netica; font-size: medium; font-style: normal; font-variant: normal; font-we=\r\night: normal; letter-spacing: normal; line-height: normal; orphans: 2; text=\r\n-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-sp=\r\nacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical=\r\n-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-=\r\nadjust: auto; -webkit-text-stroke-width: 0px; "><span class=3D"Apple-style-=\r\nspan" style=3D"font-family: Calibri, sans-serif; font-size: 15px; "><div st=\r\nyle=3D"margin-top: 0cm; margin-right: 0cm; margin-bottom: 0.0001pt; margin-=\r\nleft: 0cm; font-size: 11pt; font-family: Calibri, sans-serif; "><font class=\r\n=3D"Apple-style-span" color=3D"#000080" face=3D"'Times New Roman', serif" s=\r\nize=3D"3"><span class=3D"Apple-style-span" style=3D"font-size: 13px; "><br =\r\nclass=3D"Apple-interchange-newline"><br></span></font></div><div style=3D"m=\r\nargin-top: 0cm; margin-right: 0cm; margin-bottom: 0.0001pt; margin-left: 0c=\r\nm; font-size: 11pt; font-family: Calibri, sans-serif; "><font class=3D"Appl=\r\ne-style-span" color=3D"#000080" face=3D"'Times New Roman', serif" size=3D"3=\r\n"><span class=3D"Apple-style-span" style=3D"font-size: 13px; "><br></span><=\r\n/font></div><div style=3D"margin-top: 0cm; margin-right: 0cm; margin-bottom=\r\n: 0.0001pt; margin-left: 0cm; font-size: 11pt; font-family: Calibri, sans-s=\r\nerif; "><span style=3D"font-size: 10pt; font-family: 'Times New Roman', ser=\r\nif; color: navy; ">Med venlig hilsen / Med V=E4nlig H=E4lsning / Best Regar=\r\nds&nbsp;<br>firm<br>Asbj=F8rn Toke Morell... This is the ony relevant from information from the body: 'ndasdsasda\r\n\r\n\r\n\r\nMed venlig hilsen / Med V=E4nlig H=E4lsning / Best Regards\r\r\nAsbj=F8rn Toke Morell' Any ideas?

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  • Why is my unsafe code block slower than my safe code?

    - by jomtois
    I am attempting to write some code that will expediently process video frames. I am receiving the frames as a System.Windows.Media.Imaging.WriteableBitmap. For testing purposes, I am just applying a simple threshold filter that will process a BGRA format image and assign each pixel to either be black or white based on the average of the BGR pixels. Here is my "Safe" version: public static void ApplyFilter(WriteableBitmap Bitmap, byte Threshold) { // Let's just make this work for this format if (Bitmap.Format != PixelFormats.Bgr24 && Bitmap.Format != PixelFormats.Bgr32) { return; } // Calculate the number of bytes per pixel (should be 4 for this format). var bytesPerPixel = (Bitmap.Format.BitsPerPixel + 7) / 8; // Stride is bytes per pixel times the number of pixels. // Stride is the byte width of a single rectangle row. var stride = Bitmap.PixelWidth * bytesPerPixel; // Create a byte array for a the entire size of bitmap. var arraySize = stride * Bitmap.PixelHeight; var pixelArray = new byte[arraySize]; // Copy all pixels into the array Bitmap.CopyPixels(pixelArray, stride, 0); // Loop through array and change pixels to black or white based on threshold for (int i = 0; i < pixelArray.Length; i += bytesPerPixel) { // i=B, i+1=G, i+2=R, i+3=A var brightness = (byte)((pixelArray[i] + pixelArray[i + 1] + pixelArray[i + 2]) / 3); var toColor = byte.MinValue; // Black if (brightness >= Threshold) { toColor = byte.MaxValue; // White } pixelArray[i] = toColor; pixelArray[i + 1] = toColor; pixelArray[i + 2] = toColor; } Bitmap.WritePixels(new Int32Rect(0, 0, Bitmap.PixelWidth, Bitmap.PixelHeight), pixelArray, stride, 0); } Here is what I think is a direct translation using an unsafe code block and the WriteableBitmap Back Buffer instead of the forebuffer: public static void ApplyFilterUnsafe(WriteableBitmap Bitmap, byte Threshold) { // Let's just make this work for this format if (Bitmap.Format != PixelFormats.Bgr24 && Bitmap.Format != PixelFormats.Bgr32) { return; } var bytesPerPixel = (Bitmap.Format.BitsPerPixel + 7) / 8; Bitmap.Lock(); unsafe { // Get a pointer to the back buffer. byte* pBackBuffer = (byte*)Bitmap.BackBuffer; for (int i = 0; i < Bitmap.BackBufferStride*Bitmap.PixelHeight; i+= bytesPerPixel) { var pCopy = pBackBuffer; var brightness = (byte)((*pBackBuffer + *pBackBuffer++ + *pBackBuffer++) / 3); pBackBuffer++; var toColor = brightness >= Threshold ? byte.MaxValue : byte.MinValue; *pCopy = toColor; *++pCopy = toColor; *++pCopy = toColor; } } // Bitmap.AddDirtyRect(new Int32Rect(0,0, Bitmap.PixelWidth, Bitmap.PixelHeight)); Bitmap.Unlock(); } This is my first foray into unsafe code blocks and pointers, so maybe the logic is not optimal. I have tested both blocks of code on the same WriteableBitmaps using: var threshold = Convert.ToByte(op.Result); var copy2 = copyFrame.Clone(); Stopwatch stopWatch = new Stopwatch(); stopWatch.Start(); BinaryFilter.ApplyFilterUnsafe(copyFrame, threshold); stopWatch.Stop(); var unsafesecs = stopWatch.ElapsedMilliseconds; stopWatch.Reset(); stopWatch.Start(); BinaryFilter.ApplyFilter(copy2, threshold); stopWatch.Stop(); Debug.WriteLine(string.Format("Unsafe: {1}, Safe: {0}", stopWatch.ElapsedMilliseconds, unsafesecs)); So I am analyzing the same image. A test run of an incoming stream of video frames: Unsafe: 110, Safe: 53 Unsafe: 136, Safe: 42 Unsafe: 106, Safe: 36 Unsafe: 95, Safe: 43 Unsafe: 98, Safe: 41 Unsafe: 88, Safe: 36 Unsafe: 129, Safe: 65 Unsafe: 100, Safe: 47 Unsafe: 112, Safe: 50 Unsafe: 91, Safe: 33 Unsafe: 118, Safe: 42 Unsafe: 103, Safe: 80 Unsafe: 104, Safe: 34 Unsafe: 101, Safe: 36 Unsafe: 154, Safe: 83 Unsafe: 134, Safe: 46 Unsafe: 113, Safe: 76 Unsafe: 117, Safe: 57 Unsafe: 90, Safe: 41 Unsafe: 156, Safe: 35 Why is my unsafe version always slower? Is it due to using the back buffer? Or am I doing something wrong? Thanks

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  • problems in trying ieee 802.15.4 working from msk

    - by asel
    Hi, i took a msk code from dsplog.com and tried to modify it to test the ieee 802.15.4. There are several links on that site for ieee 802.15.4. Currently I am getting simulated ber results all approximately same for all the cases of Eb_No values. Can you help me to find why? thanks in advance! clear PN = [ 1 1 0 1 1 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 0 0 0 1 0 1 1 1 0; 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 0 0 0 1 0; 0 0 1 0 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 0; 0 0 1 0 0 0 1 0 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1; 0 1 0 1 0 0 1 0 0 0 1 0 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0 0 0 1 1; 0 0 1 1 0 1 0 1 0 0 1 0 0 0 1 0 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0; 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 0 0 0 1 0 1 1 1 0 1 1 0 1 1 0 0 1; 1 0 0 1 1 1 0 0 0 0 1 1 0 1 0 1 0 0 1 0 0 0 1 0 1 1 1 0 1 1 0 1; 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 1 1 1 0 1 1 1 1 0 1 1; 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 1 1 1 0 1 1 1; 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 1 1 1; 0 1 1 1 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0; 0 0 0 0 0 1 1 1 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 0; 0 1 1 0 0 0 0 0 0 1 1 1 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0 1 0 0 1; 1 0 0 1 0 1 1 0 0 0 0 0 0 1 1 1 0 1 1 1 1 0 1 1 1 0 0 0 1 1 0 0; 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 1 1 1 0 1 1 1 1 0 1 1 1 0 0 0; ]; N = 5*10^5; % number of bits or symbols fsHz = 1; % sampling period T = 4; % symbol duration Eb_N0_dB = [0:10]; % multiple Eb/N0 values ct = cos(pi*[-T:N*T-1]/(2*T)); st = sin(pi*[-T:N*T-1]/(2*T)); for ii = 1:length(Eb_N0_dB) tx = []; % MSK Transmitter ipBit = round(rand(1,N/32)*15); for k=1:length(ipBit) sym = ipBit(k); tx = [tx PN((sym+1),1:end)]; end ipMod = 2*tx - 1; % BPSK modulation 0 -> -1, 1 -> 1 ai = kron(ipMod(1:2:end),ones(1,2*T)); % even bits aq = kron(ipMod(2:2:end),ones(1,2*T)); % odd bits ai = [ai zeros(1,T) ]; % padding with zero to make the matrix dimension match aq = [zeros(1,T) aq ]; % adding delay of T for Q-arm % MSK transmit waveform xt = 1/sqrt(T)*[ai.*ct + j*aq.*st]; % Additive White Gaussian Noise nt = 1/sqrt(2)*[randn(1,N*T+T) + j*randn(1,N*T+T)]; % white gaussian noise, 0dB variance % Noise addition yt = xt + 10^(-Eb_N0_dB(ii)/20)*nt; % additive white gaussian noise % MSK receiver % multiplying with cosine and sine waveforms xE = conv(real(yt).*ct,ones(1,2*T)); xO = conv(imag(yt).*st,ones(1,2*T)); bHat = zeros(1,N); bHat(1:2:end) = xE(2*T+1:2*T:end-2*T); % even bits bHat(2:2:end) = xO(3*T+1:2*T:end-T); % odd bits result=zeros(16,1); chiplen=32; seqstart=1; recovered = []; while(seqstart<length(bHat)) A = bHat(seqstart:seqstart+(chiplen-1)); for j=1:16 B = PN(j,1:end); result(j)=sum(A.*B); end [value,index] = max(result); recovered = [recovered (index-1)]; seqstart = seqstart+chiplen; end; %# create binary string - the 4 forces at least 4 bits bstr1 = dec2bin(ipBit,4); bstr2 = dec2bin(recovered,4); %# convert back to numbers (reshape so that zeros are preserved) out1 = str2num(reshape(bstr1',[],1))'; out2 = str2num(reshape(bstr2',[],1))'; % counting the errors nErr(ii) = size(find([out1 - out2]),2); end nErr/(length(ipBit)*4) % simulated ber theoryBer = 0.5*erfc(sqrt(10.^(Eb_N0_dB/10))) % theoretical ber

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  • Creating ActionEvent object for CustomButton in Java

    - by Crystal
    For a hw assignment, we were supposed to create a custom button to get familiar with swing and responding to events. We were also to make this button an event source which confuses me. I have an ArrayList to keep track of listeners that would register to listen to my CustomButton. What I am getting confused on is how to notify the listeners. My teacher hinted at having a notify and overriding actionPerformed which I tried doing, but then I wasn't sure how to create an ActionEvent object looking at the constructor documentation. The source, id, string all confuses me. Any help would be appreciated. Thanks! code: import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.List; import java.util.ArrayList; public class CustomButton { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { CustomButtonFrame frame = new CustomButtonFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } }); } public void addActionListener(ActionListener al) { listenerList.add(al); } public void removeActionListener(ActionListener al) { listenerList.remove(al); } public void actionPerformed(ActionEvent e) { System.out.println("Button Clicked!"); } private void notifyListeners() { ActionEvent event = new ActionEvent(CONFUSED HERE!!!!; for (ActionListener action : listenerList) { action.actionPerfomed(event); } } List<ActionListener> listenerList = new ArrayList<ActionListener>(); } class CustomButtonFrame extends JFrame { // constructor for CustomButtonFrame public CustomButtonFrame() { setTitle("Custom Button"); CustomButtonSetup buttonSetup = new CustomButtonSetup(); this.add(buttonSetup); this.pack(); } } class CustomButtonSetup extends JComponent { public CustomButtonSetup() { ButtonAction buttonClicked = new ButtonAction(); this.addMouseListener(buttonClicked); } // because frame includes borders and insets, use this method public Dimension getPreferredSize() { return new Dimension(200, 200); } public void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D) g; // first triangle coords int x[] = new int[TRIANGLE_SIDES]; int y[] = new int[TRIANGLE_SIDES]; x[0] = 0; y[0] = 0; x[1] = 200; y[1] = 0; x[2] = 0; y[2] = 200; Polygon firstTriangle = new Polygon(x, y, TRIANGLE_SIDES); // second triangle coords x[0] = 0; y[0] = 200; x[1] = 200; y[1] = 200; x[2] = 200; y[2] = 0; Polygon secondTriangle = new Polygon(x, y, TRIANGLE_SIDES); g2.drawPolygon(firstTriangle); g2.setColor(firstColor); g2.fillPolygon(firstTriangle); g2.drawPolygon(secondTriangle); g2.setColor(secondColor); g2.fillPolygon(secondTriangle); // draw rectangle 10 pixels off border int s1[] = new int[RECT_SIDES]; int s2[] = new int[RECT_SIDES]; s1[0] = 5; s2[0] = 5; s1[1] = 195; s2[1] = 5; s1[2] = 195; s2[2] = 195; s1[3] = 5; s2[3] = 195; Polygon rectangle = new Polygon(s1, s2, RECT_SIDES); g2.drawPolygon(rectangle); g2.setColor(thirdColor); g2.fillPolygon(rectangle); } private class ButtonAction implements MouseListener { public void mousePressed(MouseEvent e) { System.out.println("Click!"); firstColor = Color.GRAY; secondColor = Color.WHITE; repaint(); } public void mouseReleased(MouseEvent e) { System.out.println("Released!"); firstColor = Color.WHITE; secondColor = Color.GRAY; repaint(); } public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} public void mouseClicked(MouseEvent e) {} } public static final int TRIANGLE_SIDES = 3; public static final int RECT_SIDES = 4; private Color firstColor = Color.WHITE; private Color secondColor = Color.DARK_GRAY; private Color thirdColor = Color.LIGHT_GRAY; }

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  • How to bring out checboxes based on drop down list selection from DB

    - by user2199877
    I got stuck again. Can't overcome this step: loop through (in a form of checkboxes) pallets based on the lot drop down list selection, so it can be further submitted to complete the table. Please, please help. So, basically, first submit button (drop down menu) brings into the table lot number and description and also checkboxes to choose pallets. Second submit button (checboxes) brings into the table pallets numbers and weights. Thank you for any help. <?php mysql_connect('localhost','user',''); mysql_select_db('base'); $query="SELECT DISTINCT lot_number FROM pl_table"; $result=mysql_query($query); ?> <form action="" method="POST"> <select name="option_chosen"> <option>-- Select lot --</option> <?php while(list($lot_number)=mysql_fetch_row($result)) { echo "<option value=\"".$lot_number."\">".$lot_number."</option>"; } ?> </select> <input type='submit' name='submitLot' value='Submit' /> </form> <!-- need help here <h4>-- Select pallets --</h4> <form action="" method="POST"> <input type='submit' name='submitPal' value='Submit'/> </form> --> <table border="1" id="table"> <tr> <th width=80 height=30>Lot<br/>number</th> <th width=110 height=30>Description</th> <th width=90 height=30>Pallet<br/>number</th> <th width=60 height=30>Net</th> <th width=60 height=30>Gross</th> </tr> <?php if($_SERVER['REQUEST_METHOD'] =='POST') {$option_chosen=$_POST['option_chosen']; $query="SELECT * FROM pl_table WHERE lot_number='$option_chosen'"; $run=mysql_query($query); $row=mysql_fetch_array($run, MYSQLI_ASSOC); echo "<tr><td>".''."</td>"; echo "<td rowspan='5'>".$row['descr']."</td>"; echo "<td><b>".'Total weight'."<b></td>"; echo "<td>".''."</td><td>".''."</td></tr>"; echo "<td>".$row['lot_number']."</td>"; echo "<td colspan='3'>".''."</td>"; //This to be echoed when "select pallets" submited //echo "<tr><td>".$row['lot_number']."</td>"; //echo "<td>".$row['pallet_number']."</td>"; //echo "<td>".$row['net']."</td><td>".$row['gross']."</td></tr>"; } ?> </table> the table +--------------------------+-------------------------+---------+-------+ | id | lot_number | descr | pallet_number | net | gross | +--------------------------+-------------------------+---------+-------+ | 1 | 111 | black | 1 | 800 | 900 | | 2 | 111 | black | 2 | 801 | 901 | | 3 | 111 | black | 3 | 802 | 902 | | 4 | 222 | white | 1 | 800 | 900 | | 5 | 222 | white | 2 | 801 | 901 | | 6 | 222 | white | 3 | 802 | 902 | +--------------------------+-------------------------+---------+-------+

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  • SOA Suite Integration: Part 1: Building a Web Service

    - by Anthony Shorten
    Over the next few weeks I will be posting blog entries outlying the SOA Suite integration of the Oracle Utilities Application Framework. This will illustrate how easy it is to integrate by providing some samples. I will use a consistent set of features as examples. The examples will be simple and while will not illustrate ALL the possibilities it will illustrate the relative ease of integration. Think of them as a foundation. You can obviously build upon them. Now, to ease a few customers minds, this series will certainly feature the latest version of SOA Suite and the latest version of Oracle Utilities Application Framework but the principles will apply to past versions of both those products. So if you have Oracle SOA Suite 10g or are a customer of Oracle Utilities Application Framework V2.1 or above most of what I will show you will work with those versions. It is just easier in Oracle SOA Suite 11g and Oracle Utilities Application Framework V4.x. This first posting will not feature SOA Suite at all but concentrate on the capability for the Oracle Utilities Application Framework to create Web Services you can use for integration. The XML Application Integration (XAI) component of the Oracle Utilities Application Framework allows product objects to be exposed as XML based transactions or as Web Services (or both). XAI was written before Web Services became fashionable and has allowed customers of our products to provide a consistent interface into and out of our product line. XAI has been enhanced over the last few years to take advantages of the maturing landscape of Web Services in the market place to a point where it now easier to integrate to SOA infrastructure. There are a number of object types that can be exposed as Web Services: Maintenance Objects – These are the lowest level objects that can be exposed as Web Services. Customers of past versions of the product will be familiar with XAI services based upon Maintenance Objects as they used to be the only method of generating Web Services. These are still supported for background compatibility but are starting to become less popular as they were strict in their structure and were solely attribute based. To generate Maintenance Object based Web Services definition you need to use the XAI Schema Editor component. Business Objects – In Oracle Utilities Application Framework V2.1 we introduced the concept of Business Objects. These are site or industry specific objects that are based upon Maintenance Objects. These allow sites to respecify, in configuration, the structure and elements of a Maintenance Object and other Business Objects (they are true objects with support for inheritance, polymorphism, encapsulation etc.). These can be exposed as Web Services. Business Services – As with Business Objects, we introduced Business Services in Oracle Utilities Application Framework V2.1 which allowed applications services and query zones to be expressed as custom services. These can then be exposed as Web Services via the Business Service definition. Service Scripts - As with Business Objects and Business Services, we introduced Service Scripts in Oracle Utilities Application Framework V2.1. These allow services and/objects to be combined into complex objects or simply expose common routines as callable scripts. These can also be defined as Web Services. For the purpose of this series we will restrict ourselves to Business Objects. The techniques can apply to any of the objects discussed above. Now, lets get to the important bit of this blog post, the creation of a Web Service. To build a Business Object, you first logon to the product and navigate to the Administration Menu by selecting the Admin Menu from the Menu action on left top of the screen (next to Home). A popup menu will appear with the menu’s available. If you do not see the Admin menu then you do not have authority to use it. Here is an example: Navigate to the B menu and select the + symbol next to the Business Object menu item. This indicates that you want to ADD a new Business Object. This menu will appear if you are running Alphabetic mode in your installation (I almost forgot that point). You will be presented with the Business Object maintenance screen. You will fill out the following on the first tab (at a minimum): Business Object – The name of the Business Object. Typically you will make it descriptive and also prefix with CM to denote it as a customization (you can easily find it if you prefix it). As I running this on my personal copy of the product I will use my initials as the prefix and call the sample Web Service “AS-User”. Description – A short description of the object to tell others what it is used for. For my example, I will use “Anthony Shorten’s User Object”. Detailed Description – You can add a long description to help other developers understand your object. I am just going to specify “Anthony Shorten’s Test Object for SOA Suite Integration”. Maintenance Object – As this Business Service is going to be based upon a Maintenance Object I will specify the desired Maintenance Object. In this example, I have decided to use the Framework object USER. Now, I chose this for a number of reasons. It is meaningful, simple and is across all our product lines. I could choose ANY maintenance object I wished to expose (including any custom ones, if I had them). Parent Business Object – If I was not using a Maintenance Object but building a child Business Object against another Business Object, then I would specify the Parent Business Object here. I am not using Parent’s so I will leave this blank. You either use Parent Business Object or Maintenance Object not both. Application Service – Business Objects like other objects are subject to security. You can attach an Application Service to an object to specify which groups of users (remember services are attached to user groups not users) have appropriate access to the object. I will use a default service provided with the product, F1-DFLTS ,as this is just a demonstration so I do not have to be too sophisticated about security. Instance Control – This allows the object to create instances in its objects. You can specify a Business Object purely to hold rules. I am being simple here so I will set it to Allow New Instances to allow the Business Object to be used to create, read, update and delete user records. The rest of the tab I will leave empty as I want this to be a very simple object. Other options allow lots of flexibility. The contents should look like this: Before saving your work, you need to navigate to the Schema tab and specify the contents of your object. I will save some time. When you create an object the schema will only contain the basic root elements of the object (in fact only the schema tag is visible). When you go to the Schema Tab, on the dashboard you will see a BO Schema zone with a solitary button. This will allow you to Generate the Schema for you from our metadata. Click on the Generate button to generate a basic schema from the metadata. You will now see a Schema with the element tags and references to the metadata of the Maintenance object (in the mapField attribute). I could spend a while outlining all the ways you can change the schema with defaults, formatting, tagging etc but the online help has plenty of great examples to illustrate this. You can use the Schema Tips zone in the for more details of the available customizations. Note: The tags are generated from the language pack you have installed. The sample is English so the tags are in English (which is the base language of all installations). If you are using a language pack then the tags will be generated in the language of the user that generated the object. At this point you can save your Business Object by pressing the Save action. At this point you have a basic Business Object based on the USER maintenance object ready for use but it is not defined as a Web Service yet. To do this you need to define the newly created Business Object as an XAI Inbound Service. The easiest and quickest way is to select + off the XAI Inbound Service off the context menu on the Business Object maintenance screen. This will prepopulate the service definition with the following: Adapter – This will be set to Business Adaptor. This indicates that the service is either Business Object, Business Service or Service Script based. Schema Type – Whether the object is a Business Object, Business Service or Service Script. In this case it is a Business Object. Schema Name – The name of the object. In this case it is the Business Object AS-User. Active – Set to Yes. This means the service is available upon startup automatically. You can enable and disable services as needed. Transaction Type – A default transaction type as this is Business Object Service. More about this in later postings. In our case we use the default Read. This means that if we only specify data and not a transaction type then the product will assume you want to issue a read against the object. You need to fill in the following: XAI Inbound Service – The name of the Web Service. Usually people use the same name as the underlying object , in the case of this example, but this can match your sites interfacing standards. By the way you can define multiple XAI Inbound Services/Web Services against the same object if you want. Description and Detail Description – Documentation for your Web Service. I just supplied some basic documentation for this demonstration. You can now save the service definition. Note: There are lots of other options on this screen that allow for behavior of your service to be specified. I will leave them blank for now. When you save the service you are issued with two new pieces of information. XAI Inbound Service Id is a randomly generated identifier used internally by the XAI Servlet. WSDL URL is the WSDL standard URL used for integration. We will take advantage of that in later posts. An example of the definition is shown below: Now you have defined the service but it will only be available when the next server restart or when you flush the data cache. XAI Inbound Services are cached for performance so the cache needs to be told of this new service. To refresh the cache you can use the Admin –> X –> XAI Command menu item. From the command dropdown select Refresh Registry and press Send Command. You will see an XML of the command sent to the server (the presence of the XML means it is finished). If you have an error around the authorization, then check your default user and password settings on the XAI Options menu item. Be careful with flushing the cache as the cache is shared (unless of course you are the only Web Service user on the system – In that case it only affects you). The Web Service is NOW available to be used. To perform a simple test of your new Web Service, navigate to the Admin –> X –> XAI Submission menu item. You will see an open XML request tab. You need to type in the request XML you want to test in the Main tab. The first tag is the XAI Inbound Service Name and the elements are as per your schema (minus the schema tag itself as that is only used internally). My example is as follows (I want to return the details of user SYSUSER) – Remember to close tags. Hitting the Save button will issue the XML and return the response according to the Business Object schema. Now before you panic, you noticed that it did not ask for credentials. It propagates the online credentials to the service call on this function. You now have a Web Service you can use for integration. We will reuse this information in subsequent posts. The process I just described can be used for ANY object in the system you want to expose. This whole process at a minimum can take under a minute. Obviously I only showed the basics but you can at least get an appreciation of the ease of defining a Web Service (just by using a browser). The next posts now build upon this. Hope you enjoyed the post.

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  • Creating a new instance, C#

    - by Dave Voyles
    This sounds like a very n00b question, but bear with me here: I'm trying to access the position of my bat (paddle) in my pong game and use it in my ball class. I'm doing this because I want a particle effect to go off at the point of contact where the ball hits the bat. Each time the ball hits the bat, I receive an error stating that I haven't created an instance of the bat. I understand that I have to (or can use a static class), but I'm not sure of how to do so in this example. I've included both my Bat and Ball classes. namespace Pong { #region Using Statements using System; using System.Collections.Generic; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Audio; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input; #endregion public class Ball { #region Fields private readonly Random rand; private readonly Texture2D texture; private readonly SoundEffect warp; private double direction; private bool isVisible; private float moveSpeed; private Vector2 position; private Vector2 resetPos; private Rectangle size; private float speed; private bool isResetting; private bool collided; private Vector2 oldPos; private ParticleEngine particleEngine; private ContentManager contentManager; private SpriteBatch spriteBatch; private bool hasHitBat; private AIBat aiBat; private Bat bat; #endregion #region Constructors and Destructors /// <summary> /// Constructor for the ball /// </summary> public Ball(ContentManager contentManager, Vector2 ScreenSize) { moveSpeed = 15f; speed = 0; texture = contentManager.Load<Texture2D>(@"gfx/balls/redBall"); direction = 0; size = new Rectangle(0, 0, texture.Width, texture.Height); resetPos = new Vector2(ScreenSize.X / 2, ScreenSize.Y / 2); position = resetPos; rand = new Random(); isVisible = true; hasHitBat = false; // Everything to do with particles List<Texture2D> textures = new List<Texture2D>(); textures.Add(contentManager.Load<Texture2D>(@"gfx/particle/circle")); textures.Add(contentManager.Load<Texture2D>(@"gfx/particle/star")); textures.Add(contentManager.Load<Texture2D>(@"gfx/particle/diamond")); particleEngine = new ParticleEngine(textures, new Vector2()); } #endregion #region Public Methods and Operators /// <summary> /// Checks for the collision between the bat and the ball. Sends ball in the appropriate /// direction /// </summary> public void BatHit(int block) { if (direction > Math.PI * 1.5f || direction < Math.PI * 0.5f) { hasHitBat = true; particleEngine.EmitterLocation = new Vector2(aiBat.Position.X, aiBat.Position.Y); switch (block) { case 1: direction = MathHelper.ToRadians(200); break; case 2: direction = MathHelper.ToRadians(195); break; case 3: direction = MathHelper.ToRadians(180); break; case 4: direction = MathHelper.ToRadians(180); break; case 5: direction = MathHelper.ToRadians(165); break; } } else { hasHitBat = true; particleEngine.EmitterLocation = new Vector2(bat.Position.X, bat.Position.Y); switch (block) { case 1: direction = MathHelper.ToRadians(310); break; case 2: direction = MathHelper.ToRadians(345); break; case 3: direction = MathHelper.ToRadians(0); break; case 4: direction = MathHelper.ToRadians(15); break; case 5: direction = MathHelper.ToRadians(50); break; } } if (rand.Next(2) == 0) { direction += MathHelper.ToRadians(rand.Next(3)); } else { direction -= MathHelper.ToRadians(rand.Next(3)); } AudioManager.Instance.PlaySoundEffect("hit"); } /// <summary> /// JEP - added method to slow down ball after powerup deactivates /// </summary> public void DecreaseSpeed() { moveSpeed -= 0.6f; } /// <summary> /// Draws the ball on the screen /// </summary> public void Draw(SpriteBatch spriteBatch) { if (isVisible) { spriteBatch.Begin(); spriteBatch.Draw(texture, size, Color.White); spriteBatch.End(); // Draws sprites for particles when contact is made particleEngine.Draw(spriteBatch); } } /// <summary> /// Checks for the current direction of the ball /// </summary> public double GetDirection() { return direction; } /// <summary> /// Checks for the current position of the ball /// </summary> public Vector2 GetPosition() { return position; } /// <summary> /// Checks for the current size of the ball (for the powerups) /// </summary> public Rectangle GetSize() { return size; } /// <summary> /// Grows the size of the ball when the GrowBall powerup is used. /// </summary> public void GrowBall() { size = new Rectangle(0, 0, texture.Width * 2, texture.Height * 2); } /// <summary> /// Was used to increased the speed of the ball after each point is scored. /// No longer used, but am considering implementing again. /// </summary> public void IncreaseSpeed() { moveSpeed += 0.6f; } /// <summary> /// Check for the ball to return normal size after the Powerup has expired /// </summary> public void NormalBallSize() { size = new Rectangle(0, 0, texture.Width, texture.Height); } /// <summary> /// Check for the ball to return normal speed after the Powerup has expired /// </summary> public void NormalSpeed() { moveSpeed += 15f; } /// <summary> /// Checks to see if ball went out of bounds, and triggers warp sfx /// </summary> public void OutOfBounds() { // Checks if the player is still alive or not if (isResetting) { AudioManager.Instance.PlaySoundEffect("warp"); { // Used to stop the the issue where the ball hit sfx kept going off when detecting collison isResetting = false; AudioManager.Instance.Dispose(); } } } /// <summary> /// Speed for the ball when Speedball powerup is activated /// </summary> public void PowerupSpeed() { moveSpeed += 20.0f; } /// <summary> /// Check for where to reset the ball after each point is scored /// </summary> public void Reset(bool left) { if (left) { direction = 0; } else { direction = Math.PI; } // Used to stop the the issue where the ball hit sfx kept going off when detecting collison isResetting = true; position = resetPos; // Resets the ball to the center of the screen isVisible = true; speed = 15f; // Returns the ball back to the default speed, in case the speedBall was active if (rand.Next(2) == 0) { direction += MathHelper.ToRadians(rand.Next(30)); } else { direction -= MathHelper.ToRadians(rand.Next(30)); } } /// <summary> /// Shrinks the ball when the ShrinkBall powerup is activated /// </summary> public void ShrinkBall() { size = new Rectangle(0, 0, texture.Width / 2, texture.Height / 2); } /// <summary> /// Stops the ball each time it is reset. Ex: Between points / rounds /// </summary> public void Stop() { isVisible = true; speed = 0; } /// <summary> /// Updates position of the ball /// </summary> public void UpdatePosition() { size.X = (int)position.X; size.Y = (int)position.Y; oldPos.X = position.X; oldPos.Y = position.Y; position.X += speed * (float)Math.Cos(direction); position.Y += speed * (float)Math.Sin(direction); bool collided = CheckWallHit(); particleEngine.Update(); // Stops the issue where ball was oscillating on the ceiling or floor if (collided) { position.X = oldPos.X + speed * (float)Math.Cos(direction); position.Y = oldPos.Y + speed * (float)Math.Sin(direction); } } #endregion #region Methods /// <summary> /// Checks for collision with the ceiling or floor. 2*Math.pi = 360 degrees /// </summary> private bool CheckWallHit() { while (direction > 2 * Math.PI) { direction -= 2 * Math.PI; return true; } while (direction < 0) { direction += 2 * Math.PI; return true; } if (position.Y <= 0 || (position.Y > resetPos.Y * 2 - size.Height)) { direction = 2 * Math.PI - direction; return true; } return true; } #endregion } } namespace Pong { using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.Graphics; using System; public class Bat { public Vector2 Position; public float moveSpeed; public Rectangle size; private int points; private int yHeight; private Texture2D leftBat; public float turbo; public float recharge; public float interval; public bool isTurbo; /// <summary> /// Constructor for the bat /// </summary> public Bat(ContentManager contentManager, Vector2 screenSize, bool side) { moveSpeed = 7f; turbo = 15f; recharge = 100f; points = 0; interval = 5f; leftBat = contentManager.Load<Texture2D>(@"gfx/bats/batGrey"); size = new Rectangle(0, 0, leftBat.Width, leftBat.Height); // True means left bat, false means right bat. if (side) Position = new Vector2(30, screenSize.Y / 2 - size.Height / 2); else Position = new Vector2(screenSize.X - 30, screenSize.Y / 2 - size.Height / 2); yHeight = (int)screenSize.Y; } public void IncreaseSpeed() { moveSpeed += .5f; } /// <summary> /// The speed of the bat when Turbo is activated /// </summary> public void Turbo() { moveSpeed += 8.0f; } /// <summary> /// Returns the speed of the bat back to normal after Turbo is deactivated /// </summary> public void DisableTurbo() { moveSpeed = 7.0f; isTurbo = false; } /// <summary> /// Returns the bat to the nrmal size after the Grow/Shrink powerup has expired /// </summary> public void NormalSize() { size = new Rectangle(0, 0, leftBat.Width, leftBat.Height); } /// <summary> /// Checks for the size of the bat /// </summary> public Rectangle GetSize() { return size; } /// <summary> /// Adds point to the player or the AI after scoring. Currently Disabled. /// </summary> public void IncrementPoints() { points++; } /// <summary> /// Checks for the number of points at the moment /// </summary> public int GetPoints() { return points; } /// <summary> /// Sets thedefault starting position for the bats /// </summary> /// <param name="position"></param> public void SetPosition(Vector2 position) { if (position.Y < 0) { position.Y = 0; } if (position.Y > yHeight - size.Height) { position.Y = yHeight - size.Height; } this.Position = position; } /// <summary> /// Checks for the current position of the bat /// </summary> public Vector2 GetPosition() { return Position; } /// <summary> /// Controls the bat moving up the screen /// </summary> public void MoveUp() { SetPosition(Position + new Vector2(0, -moveSpeed)); } /// <summary> /// Controls the bat moving down the screen /// </summary> public void MoveDown() { SetPosition(Position + new Vector2(0, moveSpeed)); } /// <summary> /// Updates the position of the AI bat, in order to track the ball /// </summary> /// <param name="ball"></param> public virtual void UpdatePosition(Ball ball) { size.X = (int)Position.X; size.Y = (int)Position.Y; } /// <summary> /// Resets the bat to the center location after a new game starts /// </summary> public void ResetPosition() { SetPosition(new Vector2(GetPosition().X, yHeight / 2 - size.Height)); } /// <summary> /// Used for the Growbat powerup /// </summary> public void GrowBat() { // Doubles the size of the bat collision size = new Rectangle(0, 0, leftBat.Width * 2, leftBat.Height * 2); } /// <summary> /// Used for the Shrinkbat powerup /// </summary> public void ShrinkBat() { // 1/2 the size of the bat collision size = new Rectangle(0, 0, leftBat.Width / 2, leftBat.Height / 2); } /// <summary> /// Draws the bats /// </summary> public virtual void Draw(SpriteBatch batch) { batch.Draw(leftBat, size, Color.White); } } }

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  • Office 2010: It&rsquo;s not just DOC(X) and XLS(X)

    - by andrewbrust
    Office 2010 has released to manufacturing.  The bits have left the (product team’s) building.  Will you upgrade? This version of Office is officially numbered 14, a designation that correlates with the various releases, through the years, of Microsoft Word.  There were six major versions of Word for DOS, during whose release cycles came three 16-bit Windows versions.  Then, starting with Word 95 and counting through Word 2007, there have been six more versions – all for the 32-bit Windows platform.  Skip version 13 to ward off folksy bad luck (and, perhaps, the bugs that could come with it) and that brings us to version 14, which includes implementations for both 32- and 64-bit Windows platforms.  We’ve come a long way baby.  Or have we? As it does every three years or so, debate will now start to rage on over whether we need a “14th” version the PC platform’s standard word processor, or a “13th” version of the spreadsheet.  If you accept the premise of that question, then you may be on a slippery slope toward answering it in the negative.  Thing is, that premise is valid for certain customers and not others. The Microsoft Office product has morphed from one that offered core word processing, spreadsheet, presentation and email functionality to a suite of applications that provides unique, new value-added features, and even whole applications, in the context of those core services.  The core apps thus grow in mission: Excel is a BI tool.  Word is a collaborative editorial system for the production of publications.  PowerPoint is a media production platform for for live presentations and, increasingly, for delivering more effective presentations online.  Outlook is a time and task management system.  Access is a rich client front-end for data-driven self-service SharePoint applications.  OneNote helps you capture ideas, corral random thoughts in a semi-structured way, and then tie them back to other, more rigidly structured, Office documents. Google Docs and other cloud productivity platforms like Zoho don’t really do these things.  And there is a growing chorus of voices who say that they shouldn’t, because those ancillary capabilities are over-engineered, over-produced and “under-necessary.”  They might say Microsoft is layering on superfluous capabilities to avoid admitting that Office’s core capabilities, the ones people really need, have become commoditized. It’s hard to take sides in that argument, because different people, and the different companies that employ them, have different needs.  For my own needs, it all comes down to three basic questions: will the new version of Office save me time, will it make the mundane parts of my job easier, and will it augment my services to customers?  I need my time back.  I need to spend more of it with my family, and more of it focusing on my own core capabilities rather than the administrative tasks around them.  And I also need my customers to be able to get more value out of the services I provide. Help me triage my inbox, help me get proposals done more quickly and make them easier to read.  Let me get my presentations done faster, make them more effective and make it easier for me to reuse materials from other presentations.  And, since I’m in the BI and data business, help me and my customers manage data and analytics more easily, both on the desktop and online. Those are my criteria.  And, with those in mind, Office 2010 is looking like a worthwhile upgrade.  Perhaps it’s not earth-shattering, but it offers a combination of incremental improvements and a few new major capabilities that I think are quite compelling.  I provide a brief roundup of them here.  It’s admittedly arbitrary and not comprehensive, but I think it tells the Office 2010 story effectively. Across the Suite More than any other, this release of Office aims to give collaboration a real workout.  In certain apps, for the first time, documents can be opened simultaneously by multiple users, with colleagues’ changes appearing in near real-time.  Web-browser-based versions of Word, Excel, PowerPoint and OneNote will be available to extend collaboration to contributors who are off the corporate network. The ribbon user interface is now more pervasive (for example, it appears in OneNote and in Outlook’s main window).  It’s also customizable, allowing users to add, easily, buttons and options of their choosing, into new tabs, or into new groups within existing tabs. Microsoft has also taken the File menu (which was the “Office Button” menu in the 2007 release) and made it into a full-screen “Backstage” view where document-wide operations, like saving, printing and online publishing are performed. And because, more and more, heavily formatted content is cut and pasted between documents and applications, Office 2010 makes it easier to manage the retention or jettisoning of that formatting right as the paste operation is performed.  That’s much nicer than stripping it off, or adding it back, afterwards. And, speaking of pasting, a number of Office apps now make it especially easy to insert screenshots within their documents.  I know that’s useful to me, because I often document or critique applications and need to show them in action.  For the vast majority of users, I expect that this feature will be more useful for capturing snapshots of Web pages, but we’ll have to see whether this feature becomes popular.   Excel At first glance, Excel 2010 looks and acts nearly identically to the 2007 version.  But additional glances are necessary.  It’s important to understand that lots of people in the working world use Excel as more of a database, analytics and mathematical modeling tool than merely as a spreadsheet.  And it’s also important to understand that Excel wasn’t designed to handle such workloads past a certain scale.  That all changes with this release. The first reason things change is that Excel has been tuned for performance.  It’s been optimized for multi-threaded operation; previously lengthy processes have been shortened, especially for large data sets; more rows and columns are allowed and, for the first time, Excel (and the rest of Office) is available in a 64-bit version.  For Excel, this means users can take advantage of more than the 2GB of memory that the 32-bit version is limited to. On the analysis side, Excel 2010 adds Sparklines (tiny charts that fit into a single cell and can therefore be presented down an entire column or across a row) and Slicers (a more user-friendly filter mechanism for PivotTables and charts, which visually indicates what the filtered state of a given data member is).  But most important, Excel 2010 supports the new PowerPIvot add-in which brings true self-service BI to Office.  PowerPivot allows users to import data from almost anywhere, model it, and then analyze it.  Rather than forcing users to build “spreadmarts” or use corporate-built data warehouses, PowerPivot models function as true columnar, in-memory OLAP cubes that can accommodate millions of rows of data and deliver fast drill-down performance. And speaking of OLAP, Excel 2010 now supports an important Analysis Services OLAP feature called write-back.  Write-back is especially useful in financial forecasting scenarios for which Excel is the natural home.  Support for write-back is long overdue, but I’m still glad it’s there, because I had almost given up on it.   PowerPoint This version of PowerPoint marks its progression from a presentation tool to a video and photo editing and production tool.  Whether or not it’s successful in this pursuit, and if offering this is even a sensible goal, is another question. Regardless, the new capabilities are kind of interesting.  A greatly enhanced set of slide transitions with 3D effects; in-product photo and video editing; accommodation of embedded videos from services such as YouTube; and the ability to save a presentation as a video each lay testimony to PowerPoint’s transformation into a media tool and away from a pure presentation tool. These capabilities also recognize the importance of the Web as both a source for materials and a channel for disseminating PowerPoint output. Congruent with that is PowerPoint’s new ability to broadcast a slide presentation, using a quickly-generated public URL, without involving the hassle or expense of a Web meeting service like GoToMeeting or Microsoft’s own LiveMeeting.  Slides presented through this broadcast feature retain full color fidelity and transitions and animations are preserved as well.   Outlook Microsoft’s ubiquitous email/calendar/contact/task management tool gains long overdue speed improvements, especially against POP3 email accounts.  Outlook 2010 also supports multiple Exchange accounts, rather than just one; tighter integration with OneNote; and a new Social Connector providing integration with, and presence information from, online social network services like LinkedIn and Facebook (not to mention Windows Live).  A revamped conversation view now includes messages that are part of a given thread regardless of which folder they may be stored in. I don’t know yet how well the Social Connector will work or whether it will keep Outlook relevant to those who live on Facebook and LinkedIn.  But among the other features, there’s very little not to like.   OneNote To me, OneNote is the part of Office that just keeps getting better.  There is one major caveat to this, which I’ll cover in a moment, but let’s first catalog what new stuff OneNote 2010 brings.  The best part of OneNote, is the way each of its versions have managed hierarchy: Notebooks have sections, sections have pages, pages have sub pages, multiple notes can be contained in either, and each note supports infinite levels of indentation.  None of that is new to 2010, but the new version does make creation of pages and subpages easier and also makes simple work out of promoting and demoting pages from sub page to full page status.  And relationships between pages are quite easy to create now: much like a Wiki, simply typing a page’s name in double-square-brackets (“[[…]]”) creates a link to it. OneNote is also great at integrating content outside of its notebooks.  With a new Dock to Desktop feature, OneNote becomes aware of what window is displayed in the rest of the screen and, if it’s an Office document or a Web page, links the notes you’re typing, at the time, to it.  A single click from your notes later on will bring that same document or Web page back on-screen.  Embedding content from Web pages and elsewhere is also easier.  Using OneNote’s Windows Key+S combination to grab part of the screen now allows you to specify the destination of that bitmap instead of automatically creating a new note in the Unfiled Notes area.  Using the Send to OneNote buttons in Internet Explorer and Outlook result in the same choice. Collaboration gets better too.  Real-time multi-author editing is better accommodated and determining author lineage of particular changes is easily carried out. My one pet peeve with OneNote is the difficulty using it when I’m not one a Windows PC.  OneNote’s main competitor, Evernote, while I believe inferior in terms of features, has client versions for PC, Mac, Windows Mobile, Android, iPhone, iPad and Web browsers.  Since I have an Android phone and an iPad, I am practically forced to use it.  However, the OneNote Web app should help here, as should a forthcoming version of OneNote for Windows Phone 7.  In the mean time, it turns out that using OneNote’s Email Page ribbon button lets you move a OneNote page easily into EverNote (since every EverNote account gets a unique email address for adding notes) and that Evernote’s Email function combined with Outlook’s Send to OneNote button (in the Move group of the ribbon’s Home tab) can achieve the reverse.   Access To me, the big change in Access 2007 was its tight integration with SharePoint lists.  Access 2010 and SharePoint 2010 continue this integration with the introduction of SharePoint’s Access Services.  Much as Excel Services provides a SharePoint-hosted experience for viewing (and now editing) Excel spreadsheet, PivotTable and chart content, Access Services allows for SharePoint browser-hosted editing of Access data within the forms that are built in the Access client itself. To me this makes all kinds of sense.  Although it does beg the question of where to draw the line between Access, InfoPath, SharePoint list maintenance and SharePoint 2010’s new Business Connectivity Services.  Each of these tools provide overlapping data entry and data maintenance functionality. But if you do prefer Access, then you’ll like  things like templates and application parts that make it easier to get off the blank page.  These features help you quickly get tables, forms and reports built out.  To make things look nice, Access even gets its own version of Excel’s Conditional Formatting feature, letting you add data bars and data-driven text formatting.   Word As I said at the beginning of this post, upgrades to Office are about much more than enhancing the suite’s flagship word processing application. So are there any enhancements in Word worth mentioning?  I think so.  The most important one has to be the collaboration features.  Essentially, when a user opens a Word document that is in a SharePoint document library (or Windows Live SkyDrive folder), rather than the whole document being locked, Word has the ability to observe more granular locks on the individual paragraphs being edited.  Word also shows you who’s editing what and its Save function morphs into a sync feature that both saves your changes and loads those made by anyone editing the document concurrently. There’s also a new navigation pane that lets you manage sections in your document in much the same way as you manage slides in a PowerPoint deck.  Using the navigation pane, you can reorder sections, insert new ones, or promote and demote sections in the outline hierarchy.  Not earth shattering, but nice.   Other Apps and Summarized Findings What about InfoPath, Publisher, Visio and Project?  I haven’t looked at them yet.  And for this post, I think that’s fine.  While those apps (and, arguably, Access) cater to specific tasks, I think the apps we’ve looked at in this post service the general purpose needs of most users.  And the theme in those 2010 apps is clear: collaboration is key, the Web and productivity are indivisible, and making data and analytics into a self-service amenity is the way to go.  But perhaps most of all, features are still important, as long as they get you through your day faster, rather than adding complexity for its own sake.  I would argue that this is true for just about every product Microsoft makes: users want utility, not complexity.

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  • Using CSS3 media queries in HTML 5 pages

    - by nikolaosk
    This is going to be the seventh post in a series of posts regarding HTML 5. You can find the other posts here , here , here, here , here and here. In this post I will provide a hands-on example on how to use CSS 3 Media Queries in HTML 5 pages. This is a very important feature since nowadays lots of users view websites through their mobile devices. Web designers were able to define media-specific style sheets for quite a while, but have been limited to the type of output. The output could only be Screen, Print .The way we used to do things before CSS 3 was to have separate CSS files and the browser decided which style sheet to use. Please have a look at the snippet below - HTML 4 media queries <link rel="stylesheet" type="text/css" media="screen" href="styles.css"> <link rel="stylesheet" type="text/css" media="print" href="print-styles.css"> ?he browser determines which style to use. With CSS 3 we can have all media queries in one stylesheet. Media queries can determine the resolution of the device, the orientation of the device, the width and height of the device and the width and height of the browser window.We can also include CSS 3 media queries in separate stylesheets. In order to be absolutely clear this is not (and could not be) a detailed tutorial on HTML 5. There are other great resources for that.Navigate to the excellent interactive tutorials of W3School. Another excellent resource is HTML 5 Doctor. Two very nice sites that show you what features and specifications are implemented by various browsers and their versions are http://caniuse.com/ and http://html5test.com/. At this times Chrome seems to support most of HTML 5 specifications.Another excellent way to find out if the browser supports HTML 5 and CSS 3 features is to use the Javascript lightweight library Modernizr. In this hands-on example I will be using Expression Web 4.0.This application is not a free application. You can use any HTML editor you like.You can use Visual Studio 2012 Express edition. You can download it here. Before I go on with the actual demo I will use the (http://www.caniuse.com) to see the support for CSS 3 Media Queries from the latest versions of modern browsers. Please have a look at the picture below. We see that all the latest versions of modern browsers support this feature. We can see that even IE 9 supports this feature.   Let's move on with the actual demo.  This is going to be a rather simple demo.I create a simple HTML 5 page. The markup follows and it is very easy to use and understand.This is a page with a 2 column layout. <!DOCTYPE html><html lang="en">  <head>    <title>HTML 5, CSS3 and JQuery</title>    <meta http-equiv="Content-Type" content="text/html;charset=utf-8" >    <link rel="stylesheet" type="text/css" href="style.css">       </head>  <body>    <div id="header">      <h1>Learn cutting edge technologies</h1>      <p>HTML 5, JQuery, CSS3</p>    </div>    <div id="main">      <div id="mainnews">        <div>          <h2>HTML 5</h2>        </div>        <div>          <p>            HTML5 is the latest version of HTML and XHTML. The HTML standard defines a single language that can be written in HTML and XML. It attempts to solve issues found in previous iterations of HTML and addresses the needs of Web Applications, an area previously not adequately covered by HTML.          </p>          <div class="quote">            <h4>Do More with Less</h4>            <p>             jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development.             </p>            </div>          <p>            The HTML5 test(html5test.com) score is an indication of how well your browser supports the upcoming HTML5 standard and related specifications. Even though the specification isn't finalized yet, all major browser manufacturers are making sure their browser is ready for the future. Find out which parts of HTML5 are already supported by your browser today and compare the results with other browsers.                      The HTML5 test does not try to test all of the new features offered by HTML5, nor does it try to test the functionality of each feature it does detect. Despite these shortcomings we hope that by quantifying the level of support users and web developers will get an idea of how hard the browser manufacturers work on improving their browsers and the web as a development platform.</p>        </div>      </div>              <div id="CSS">        <div>          <h2>CSS 3 Intro</h2>        </div>        <div>          <p>          Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation semantics (the look and formatting) of a document written in a markup language. Its most common application is to style web pages written in HTML and XHTML, but the language can also be applied to any kind of XML document, including plain XML, SVG and XUL.          </p>        </div>      </div>            <div id="CSSmore">        <div>          <h2>CSS 3 Purpose</h2>        </div>        <div>          <p>            CSS is designed primarily to enable the separation of document content (written in HTML or a similar markup language) from document presentation, including elements such as the layout, colors, and fonts.[1] This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, enable multiple pages to share formatting, and reduce complexity and repetition in the structural content (such as by allowing for tableless web design).          </p>        </div>      </div>                </div>    <div id="footer">        <p>Feel free to google more about the subject</p>      </div>     </body>  </html>    The CSS code (style.css) follows  body{        line-height: 30px;        width: 1024px;        background-color:#eee;      }            p{        font-size:17px;    font-family:"Comic Sans MS"      }      p,h2,h3,h4{        margin: 0 0 20px 0;      }            #main, #header, #footer{        width: 100%;        margin: 0px auto;        display:block;      }            #header{        text-align: center;         border-bottom: 1px solid #000;         margin-bottom: 30px;      }            #footer{        text-align: center;         border-top: 1px solid #000;         margin-bottom: 30px;      }            .quote{        width: 200px;       margin-left: 10px;       padding: 5px;       float: right;       border: 2px solid #000;       background-color:#F9ACAE;      }            .quote :last-child{        margin-bottom: 0;      }            #main{        column-count:2;        column-gap:20px;        column-rule: 1px solid #000;        -moz-column-count: 2;        -webkit-column-count: 2;        -moz-column-gap: 20px;        -webkit-column-gap: 20px;        -moz-column-rule: 1px solid #000;        -webkit-column-rule: 1px solid #000;      } Now I view the page in the browser.Now I am going to write a media query and add some more rules in the .css file in order to change the layout of the page when the page is viewed by mobile devices. @media only screen and (max-width: 480px) {          body{            width: 480px;          }          #main{            -moz-column-count: 1;            -webkit-column-count: 1;          }        }   I am specifying that this media query applies only to screen and a max width of 480 px. If this condition is true, then I add new rules for the body element. I change the number of columns to one. This rule will not be applied unless the maximum width is 480px or less.  As I decrease the size-width of the browser window I see no change in the column's layout. Have a look at the picture below. When I resize the window and the width of the browser so the width is less than 480px, the media query and its respective rules take effect.We can scroll vertically to view the content which is a more optimised viewing experience for mobile devices. Have a look at the picture below Hope it helps!!!!

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  • SharePoint 2010 – Central Admin tooling to create host header site collections

    - by eJugnoo
    Just like SharePoint 2007, you can create host-header based site collections in SharePoint 2010 as well. It means, that you do not necessarily need to create a site-collection under a managed path like /sites/, you can create multiple root-level site collections on same web-application/port by using host-header site collections. All you need to do is point your domain or sub-domain to your web-application and create a matching site-collection that you want. But, just like in 2007, it is something that you do by using STSADM, and is not available on Central Admin UI in 2010 as well. Yeah, though you can now also use PowerShell to create one: C:\PS>$w = Get-SPWebApplication http://sitename   C:\PS>New-SPSite http://www.contoso.com -OwnerAlias "DOMAIN\jdoe" -HostHeaderWebApplication $w -Title "Contoso" -Template "STS#0"   This example creates a host header site collection. Because the template is provided, the root Web of this site collection will be created. .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } I’ve been playing with WCM in SharePoint 2010 more and more, and for that I preferred creating hosts file entries for desired domains and create site-collections by those headers – in my dev environment. I used PowerShell initially, but then got interested to build my own UI on Central Admin instead. Developed with Visual Studio 2010 So I used new Visual Studio 2010 tooling to create an empty SharePoint 2010 project. Added an application page (there is no option to add _Admin page item in VS 2010 RC), that got created in Layouts “mapped” folder. Created a new Admin mapped folder for 14-“hive”, and moved my new page there instead. Yes, I didn’t change the base class for page, its just that it runs under _admin, but it is indeed a LayoutsPageBase inherited page. To introduce a action-link in Central Admin console, I created following element: 1: <Elements xmlns="http://schemas.microsoft.com/sharepoint/"> 2: <CustomAction 3: Id="CreateSiteByHeader" 4: Location="Microsoft.SharePoint.Administration.Applications" 5: Title="Create site collections by host header" 6: GroupId="SiteCollections" 7: Sequence="15" 8: RequiredAdmin="Delegated" 9: Description="Create a new top-level web site, by host header" > 10: <UrlAction Url="/_admin/OfficeToolbox/CreateSiteByHeader.aspx" /> 11: </CustomAction> 12: </Elements> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Used Reflector to understand any special code behind createpage.aspx, and created a new for our purpose – CreateSiteByHeader.aspx. From there I quickly created a similar code behind, without all the fancy of Farm Config Wizard handling and dealt with alternate implementations of sealed classes! Goal was to create a professional looking and OOB-type experience. I also added Regex validation to ensure user types a valid domain name as header value. Below is the result…   Release @ Codeplex I’ve released to WSP on OfficeToolbox @ Codeplex, and you can download from here. Hope you find it useful… -- Sharad

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  • An offscreen MKMapView behaves differently in 3.2, 4.0

    - by Duane Fields
    In 3.1 I've been using an "offscreen" MKMapView to create map images that I can rotate, crop and so forth before presenting them the user. In 3.2 and 4.0 this technique no longer works quite right. Here's some code that illustrates the problem, followed by my theory. // create map view _mapView = [[MKMapView alloc] initWithFrame:CGRectMake(0, 0, MAP_FRAME_SIZE, MAP_FRAME_SIZE)]; _mapView.zoomEnabled = NO; _mapView.scrollEnabled = NO; _mapView.delegate = self; _mapView.mapType = MKMapTypeSatellite; // zoom in to something enough to fill the screen MKCoordinateRegion region; CLLocationCoordinate2D center = {30.267222, -97.763889}; region.center = center; MKCoordinateSpan span = {0.1, 0.1 }; region.span = span; _mapView.region = region; // set scrollview content size to full the imageView _scrollView.contentSize = _imageView.frame.size; // force it to load #ifndef __IPHONE_3_2 // in 3.1 we can render to an offscreen context to force a load UIGraphicsBeginImageContext(_mapView.frame.size); [_mapView.layer renderInContext:UIGraphicsGetCurrentContext()]; UIGraphicsEndImageContext(); #else // in 3.2 and above, the renderInContext trick doesn't work... // this at least causes the map to render, but it's clipped to what appears to be // the viewPort size, plus some padding [self.view addSubview:_mapView]; #endif when the map is done loading, I snap picture of it and stuff it in my scrollview - (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView { NSLog(@"[MapBuilder] mapViewDidFinishLoadingMap"); // render the map to a UIImage UIGraphicsBeginImageContext(mapView.bounds.size); // the first sub layer is just the map, the second is the google layer, this sublayer structure might change of course [[[mapView.layer sublayers] objectAtIndex:0] renderInContext:UIGraphicsGetCurrentContext()]; // we are done with the mapView at this point, we need its ram! _mapView.delegate = nil; [_mapView release]; [_mapView removeFromSuperview]; _mapView = nil; UIImage* mapImage = [UIGraphicsGetImageFromCurrentImageContext() retain]; UIGraphicsEndImageContext(); _imageView.image = mapImage; [mapImage release], mapImage = nil; } The first problem is that in 3.1 rendering to a context would trigger the map to begin loading. This no longer works in 3.2, 4.0. The only thing I have found would trigger the load is to temporarily add the map to the view (i.e. make it visible). The problem being that the map only renders to the visible area of the screen, plus a little padding. The frame/bounds are fine, but it appears to be "helpfully" optimizes the loading to limit the tiles to those visible on the screen or close to it. Any ideas how to force the map to load at full size? Anyone else have this issue?

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