brush

问题 i have created some histogram with d3.js . I managed to change fill color of rect depending on the position of the brush . But i would like to change the color inside a rect . For example if the brush start is in the middle of the rect i would like to have my rect with two color. At the moment this is what i have : And this is what i would like to have : I have seen some examples like Here. I'm new to d3 and i try to understand the code. I see that they use clip-path that certainly hide the

问题 Suppose I had two brushes. One that was a linear gradient brush that was from Dark to light One was a radial brush that went from Dark to light. How could I merge the brushes so that when I apply them, I can apply both at once. EG Check this: 1) http://www.codeproject.com/KB/vista/WindowsVistaRenderer/VistaRenderer4.gif 2) http://www.codeproject.com/KB/vista/WindowsVistaRenderer/VistaRenderer5.gif How could I (In WPF/XAML) merge both into one gradient and then refer to that? (This is Mr.

问题 I have a gradient that changes its colors, I want the text inside it should always be visible. I rather doing it dynamically if there is any out-the-box resource; I want a 'magic brush' that negates the color. Any experiments? 回答1: Well, color inversion could possibly be done as a bitmap effect, but there's a simpler way. Make a Grid that will be the container for 3 child panels so that these child panels will overlap each other completely: Put the text where you want it in a panel that has a

问题 What is the best way to pick a random brush from the System.Drawing.Brushes collection in C#? 回答1: If you just want a solid brush with a random color, you can try this: Random r = new Random(); int red = r.Next(0, byte.MaxValue + 1); int green = r.Next(0, byte.MaxValue + 1); int blue = r.Next(0, byte.MaxValue + 1); System.Drawing.Brush brush = new System.Drawing.SolidBrush(Color.FromArgb(red, green, blue)); 回答2: For WPF, use reflection: var r = new Random(); var properties = typeof(Brushes)

问题 I am writing a d3 widget based on Mike Bostocks example http://bl.ocks.org/mbostock/1667367 So I am trying to set brush extent with predefined dates, but the extent rectangle is not applied to those dates. var brush = d3.svg.brush() .x(x2) .extent([new Date("May 2001"), new Date("May 2002")]) .on('brush', brushed); ... the entire code here http://plnkr.co/edit/H3nt9t8pw0nXM4yHp25P?p=preview 回答1: As I understood, you want to set initially the date period. You'll need to call brush component

问题 I think that the title is clear ! What I have now is : System.Drawing.Color uiui = System.Drawing.ColorTranslator.FromHtml(myString); var intColor = (uint)((uiui.A << 24) | (uiui.R << 16) | (uiui.G << 8) | (uiui.B << 0)); var bytes = BitConverter.GetBytes(uint.Parse(value)); var brush = new SolidColorBrush(); brush.Color = Color.FromArgb(bytes[3], bytes[2], bytes[1], bytes[0]); 1- myString is like #FFFFFF like I said in the title 2- This fails on the BitConverter.GetBytes line which surprises

问题 I want to respond to a tap on a canvas and store the value of the canvas' background in app settings so that I can assign that value to the AppBar / Command Bar. So I have this XAML in a User Control: <StackPanel Orientation="Horizontal"> <Canvas Background="Aqua" Width="20" Height="20" VerticalAlignment="Center" Tapped="CanvasColor_Tapped"></Canvas> <TextBlock Text="Aqua" VerticalAlignment="Center" Tapped="CanvasColor_Tapped" ></TextBlock> </StackPanel> ..and the handler is: private void

问题 I'm searching for a way to build a photoshop like drawing tool in ActionScript 3. Especially I want to build something like the brushes in photoshop. So that you can use different PNG's as a brush. I tried it with saving a brush in photoshop as a transparent png, import it into my AS3 project and with a mouse move event, draw the png everytime you move the mouse into a bitmapdata object. But that doesn't look like photoshop. Here's a example, first the photoshop drawing, then the as3 drawing:

问题 I'm trying to save a Brush object using serializing but I get error below: Type 'System.Windows.Media.LinearGradientBrush' in Assembly 'PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' is not marked as serializable How can I save a Brush object into a file? 回答1: Try this... var brush = new LinearGradientBrush(new GradientStopCollection( new GradientStop[] { new GradientStop(Colors.Blue, 2.0), new GradientStop(Colors.Red, 3.0) })); using (var outfile = File

问题 I need to create a d3 brush which allows only for expansion/contraction on the right. i.e. I need to prevent the default behavior of move and expansion/contraction from the left. From the docs, looks like this can be achieved by the filter function(?) - but I am not seeing how to achieve the above use case. In this example, if I change the var brush to var brush = d3.brushX() .extent([[0, 0], [width, height]]) .on("start brush", brushed) .filter(function(){return event.button;}) ; to add the