I have to mention first that I have never worked with silverlight before.
I'm currently starting a project and I need to work with DrawingBrush... to resolve this task
I'm developing in visual studio 2012 and sometimes in 2010, the project is Silverlight5
This is the context where I need DrawingBrush
<Image Source="Images/image.png">
<Image.OpacityMask>
<DrawingBrush>
...
</DrawingBrush>
</Image.OpacityMask>
</Image>
The problem is I can't find use DrawingBrush... it doesn't find it's reference. Intellisense says:
"The type or namespace name 'DrawingBrush' does not exist in the namespace 'System.Windows.Media' (are you missing an assembly reference?)"
Do I have to include something or add a certain reference to my project to use DrawingBrush?
Thanks!
I suggest you to do it in different way.
Convert this image into WriteableBitmap (pixel information) as WB1.
Take another WriteableBitmap as WB2 of same size field with Black color pixel.
Render WB2 as image. Now whenever required you can copy specific pixels from WB1 to WB2 and display the modified WB2.
The following project/sample code will help you to learn to work with WritableBitmap. You just need to learn the following things from this project.
How to read pixel information from an image.
How to modify those pixels information
and how to display the modified pixels
information as Image
Sample Code: http://code.msdn.microsoft.com/CSSL3WriteableBitmap-960deef6
This project supports Silverlight 3. So definitely it will be supported in Silverlight 5.
Hope this helps!
Related
I want to use a SVG image format as an button image because I want these images is shown with high quality so I have decided to use SVG format.
I have searched about it and There are some people that say SVG format can be used as WPF image source.
But when I use SVG image Like this:
<Image Source="Images/hard.svg"/>
I have error.
Absolutely Microsoft website says I can use SVG file as Image source.
https://learn.microsoft.com/en-us/uwp/api/windows.ui.xaml.media.imaging.svgimagesource?view=winrt-19041
How can I use SVG image format as my WPF image souse?
You have to convert svg to xaml using this library https://github.com/BerndK/SvgToXaml
Sample output:
<DrawingImage x:Key="ic_close">
<DrawingImage.Drawing>
<DrawingGroup ClipGeometry="M0,0 V24 H24 V0 H0 Z">
<GeometryDrawing Brush="Red"
Geometry="F0 M24,24z M0,0z M5.21723,16.4509C4.64003,17.0905 4.68203,17.8189 5.21723,18.3421 5.75123,18.8653 6.65362,18.8329 7.15522,18.3421 7.52928,17.977 10.3498,15.0233 11.7599,13.5448 13.1706,15.0243 15.9893,17.977 16.3633,18.3402 16.8649,18.8298 17.7673,18.8634 18.3013,18.3402 18.8365,17.8206 18.8785,17.091 18.3013,16.4514L13.8049,11.7618 18.3013,7.07225C18.8785,6.43265 18.8365,5.70425 18.3013,5.18105 17.7673,4.65785 16.8649,4.69025 16.3633,5.18105 15.9892,5.54616 13.1687,8.49985 11.7585,9.97833 10.3479,8.4988 7.52916,5.54607 7.15523,5.18287 6.65363,4.69327 5.75123,4.65967 5.21723,5.18287 4.68203,5.70247 4.64003,6.43207 5.21723,7.07167L9.71363,11.7613 5.21723,16.4509z" />
</DrawingGroup>
</DrawingImage.Drawing>
</DrawingImage>
Sample usage:
<Image Width="14"
Height="14"
Source="{StaticResource ic_close}" />
If you look at the namespace of that page you linked, you will see:
Windows.UI.Xaml.Media.Imaging
Meaning this is uwp rather than wpf.
You could use SharpVectors
https://github.com/ElinamLLC/SharpVectors
Or you could manually extract the path or paths from in that svg and use those in wpf. Since this is a manual conversion that might not be attractive if there are a number of svg you wish to use or appropriate if they are somehow dynamic.
Another option to consider is xaml islands.
You could host a uwp image control in a xaml island
https://blogs.windows.com/windowsdeveloper/2018/11/02/xaml-islands-a-deep-dive-part-1/#:~:text=XAML%20Islands%20is%20a%20technology,Windows%20Forms%20and%20WPF%20technologies.
Note that this introduces a dependency on win 10 creators edition or later.
WPF renders vector based but cannot render SVG files directly. You would have to use a vector based image processing application to convert the SVG to XAML.
Generally, the XAML obtained from the exported SVG usually consists of Path or Geometry elements, which you wrap into a Viewbox for scaling.
Adobe Illustrator (not free, trial available) yields the best results. You use it to convert the SVG image to .ai file and then Blend or a plug-in to export the .ai file as XAML.
AB4D (not free, trial available) is another application which also outputs very good results and allows to export directly to XAML.
InkScape is free and works too, but the results are not very good and most of the time require manual post-processing. Complex graphics never look good out of the box.
There are more tools like SvgToXaml, but I don't remember the quality.
I would like to know if there is a setting for WPF in VS2019 to enable "colour preview" in code, such that when I type the hex colour code it displays the colour (without having to apply the colour to any UI element – just a pure visual preview)?
I have a project, where I use a multitude of colours, and it is getting difficult to keep track of which colour is which, so it would be nice to have a visual guide.
My general code for colours in the Resource Dictionary is:
<Color x:Key="BackgroundLight">#efefef</Color>
<SolidColorBrush x:Key="BackgroundLightBrush" Color="{StaticResource BackgroundLight}" />
Is there such setting in VS2019? I believe I saw something like this in one youtube video, where the hex code was underlined by the corresponding colour, but I can neither figure out how to achieve that, nor can I find the video now.
The newest version of VisualStudio implements this by default now. There is a coloured square next to the colour’s name. Nice.
You can sometimes persuade the colour picker to appear in the properties window.
It is fiddly though and I must admit I can't recall trying with vs2019.
EDIT:
Having just tried this, I couldn't get it to work with just a color. A control like say the background on a grid with the hex in it works ok but the colorpicker doesn't respond at all when I select a color resource.
There's a vsix
https://marketplace.visualstudio.com/items?itemName=NikolaMSFT.InlineColorPicker
Like you're doing, I usually define colours in a resource dictionary so they have meaningful names.
Once I've done that, the actual colour matters a lot less.
There's a vsix
https://marketplace.visualstudio.com/items?itemName=NikolaMSFT.InlineColorPicker
This extension can't be installed in VisualStudio 2019 Pro, but you can use this method mentioned in another answer as workaround to install it in VisualStudio 2019 Pro.
https://stackoverflow.com/a/62040646/7387963
In Windows Phone UI Design Principle, MS recommended use solid color rectangle or coding-gradient for Control Background to avoid incompatible in multi-screen. But in many requirements, using image as Control Background is necessary. Then, 9-patch image technique is used. In Android and IOs, it was support in core, but in WP it is lacking. I try to use it in WP by 3 approaches:
Using 9-cells Grid: clip image into 9 patch and lay them into cells. It works ok, but i afraid app performance reduce when has many control.
Using Custom Brush: only custom Brush to draw 9-patch image as ImageBrush, but seem MS not allow for custom Brush.
Using FramworkElement: like Rectangle, Ellipse... i want to create a FrameworkElement can draw a 9-patch image. But, can't use low-level render.
How can i implement 2nd and 3th approach?
I created a lib for Windows Phone which do exactly as Android NinePatchDrawable. You just need to set a bitmap image.9.png, the width and heigh... And done!!! you have you new image scale to the size you want. Enjoy it :). In the future I will add more option :).
GitHub link
You can compensate for the lack of low-level rendering and custom brush by using a WriteableBitmap: http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.writeablebitmap(v=vs.95).aspx
This way, you have complete control on how to render your background, then you can assign it to a single Image control. But it's way more complicated than the "use a grid with 9 image controls" method, and the performance improvement is probably insignificant.
If i have a logo, let's say done as a jpg or even a png. Any suggestion for how I can use that to define a path geometry? It would be really good if any suggestions could be provided for how i can do it in blend.
Thanks
Yes - I just tackled this problem for an LOB application two days ago.
I can't offer advice for Blend (though I've read that it can be done in Expression Designer). However, the best free tool I've found for this is called InkScape (http://www.inkscape.org).
It's opensource, and while it's intended primarily for editing SVG vector-based images, it has two key features that are useful to us WPFers:
It can vectorize (i.e. "trace") raster images like bitmaps and jpegs, albeit not as well as one would hope, and
It can export the vector image as XAML
You'll invariably find that you get better results from loading vector formats (like SVG, EMF, WMF, etc) and saving to XAML, than if you try to convert a bitmap/jpeg... simply because the process of vectorizing a raster image is error prone at best. So if you want to bring a company logo into XAML, try to get hold of the source files used to create the logo (perhaps done in Illustrator?) and import that into InkScape.
If this post is helpful, please be kind and give it a one-up.
Jasema is a terrific tool right for the job.
Also, don't be shy to use Blend - it is somewhat more difficult to use (drawing shapes using pen) but it gets easier pretty fast. Switch on gridlines and optionally snap to them for good results.
What both Jasema and Blend are lacking, is the ability to easily create shapes with a central symmetry (like stars), so I took parts from Jasema and created my own tool (named Radius) that works a bit like a combination of a ruler and compass.
I have a good idea but you're png, bmp, jpg or other non vector file is must be very simple because we need best scan results and only use inkscape.
Step: Drag and drop your file workspace on Inkscape, download free.
Tip: If your image is color white, Top menu item File->Document Properties-> heck Checkerboard Background and if you want uncheck Page border show.
Step: Top menu item Path-> Trace Bitmap-> Mode check what you want property, i usually use color property and if your file is png check Remove Background then click OK, then wait again Ok button is Enable and close window.
Step: Now you have a two layer, top layer vektor file and bottom layer your file. Select vector file and top menu item Edit-> XML Editor-> select svg path and look side column, d name propery in your data path value.
But this method may not always work or may not give the desired results and draw your own shapes with the scape so you can get the path data from the XML editor.
Example, my first tests this like:
and after working on it some more:
I've solved my problem (export an image as XAML) using Microsoft Expression Design 4 (Free Version). I've downloaded from the link
http://www.microsoft.com/en-us/download/confirmation.aspx?id=36180
As input, I had Adobe Ilustrator files.
Adobe Illustrator / CorelDraw is perhaps the best tool out there for these operations that I have used.
Personally, I prefer illustrator for on-screen media. These tracings can be exported into several formats such as EPS, SVG, AI, or even XAML (with this plugin)
Best of Luck !!!!
I have recently been struggling with this myself. I had a set of icons done in data and needed to update them to look nicer.
I tried everything, manually typing them out. drawing in svg, converting svg to xaml.
in the end i found a list of open source icons from google material icons.
I then used this to convert from the svg files to data
https://github.com/BerndK/SvgToXaml
It works well but not for the icons i drew myself.
I decided to place all the icons data i convert into an app i built myself that will give you the data and a preview of the icon. feel free to use and contribute. I will keep updating as much as i can.
https://github.com/sgreaves1/XamlIcons
Convert your image from png to svg in online converter, then drop file into this site http://inloop.github.io/svg2android/ and you will see pathData of your image like below shown in my image.
Our graphics person uses Adobe Illustrator and we'd like to use her images inside our WPF application as paths. Is there a way to do this?
You can go from AI to SVG to XAML.
From Adobe Illustrator: File -> Save As -> *.SVG.
SVG "Profile 1.1" seems to be sufficient.
Note that to preserve path/group names in XAML you should enable "Preserve Illustrator Editing Capabilities" (or at least as it's called in CS4).
SharpVectors can convert SVG data to XAML data. This will produce a fragment of XAML with root <DrawingGroup>.
Do what you need to do to copy-paste and otherwise use the XAML, such as placing it into an Image like below. Named objects or groups in the AI file should still have their names in the XAML i.e. via x:Name="...".
<Image>
<Image.Source>
<DrawingImage>
<DrawingImage.Drawing>
<DrawingGroup ... the output from step #2 ...>...</DrawingGroup>
</DrawingImage.Drawing>
</DrawingImage>
</Image.Source>
</Image>
Coordinate systems can be a pain if you want to be animating things. There are some other posts such as this which may have insights.
Get her to export the illustrations as some other format (recent versions of Illustrator support SVG) that you can use or convert to something that will work.
The detour suggested by #ConcernedOfTunbridgeWells is starting to make sense now. Other solutions are not being maintained and do not work anymore.
Hence, you can use this option as workaround:
Save files as svg.
Convert them to XAML using Inkscape.
This solution even has the advantage of text will stay text and is not converted to a path.
How to convert many files?
Inkscape also supports a batch mode to convert many files at once. I took a great script (by Johannes Deml) for batch conversions on Windows that takes vectors files and converts them to various other formats using Inkscapes batch mode. I adapted it to convert to XAML, too.
You can find the script that includes XAML on Github. Some instructions on how to use the script are provided by the original author.