如何在 Mango 中设置动态图块的 WriteableBitmap 背景颜色?
我正在尝试动态构建动态图块。 由于一些建议,它运行得很好,我有这个代码:
WriteableBitmap wbmp = new WriteableBitmap(173, 173);
TextBlock text = new TextBlock() { FontSize = (double)Resources["PhoneFontSizeLarge"], Foreground = new SolidColorBrush(Colors.White) };
text.Text = "my text";
wbmp.Render(text, new TranslateTransform() { Y = 20 });
wbmp.Invalidate();
// save image to isolated storage
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream imageStream = new IsolatedStorageFileStream("/Shared/ShellContent/MyImage.jpg", System.IO.FileMode.Create, isf))
{
wbmp.SaveJpeg(imageStream, wbmp.PixelWidth, wbmp.PixelHeight, 0, 100);
}
}
问题是图块有黑色(或者,更好,透明)背景。我想使用强调背景颜色,我该怎么做?
I'm trying to dynamically build a live tile.
It runs fine thanks to some SO suggestions and I have this code:
WriteableBitmap wbmp = new WriteableBitmap(173, 173);
TextBlock text = new TextBlock() { FontSize = (double)Resources["PhoneFontSizeLarge"], Foreground = new SolidColorBrush(Colors.White) };
text.Text = "my text";
wbmp.Render(text, new TranslateTransform() { Y = 20 });
wbmp.Invalidate();
// save image to isolated storage
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream imageStream = new IsolatedStorageFileStream("/Shared/ShellContent/MyImage.jpg", System.IO.FileMode.Create, isf))
{
wbmp.SaveJpeg(imageStream, wbmp.PixelWidth, wbmp.PixelHeight, 0, 100);
}
}
The problem is that the tile has a black (or, better, transparent) background. I would like to use accent background color, how can I do it?
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是这样解决的:
Solved in this way:
您最好使用 Resources["TransparentBrush"] 作为背景,然后保存为 png,否则,您的图块将在主题更改时显示错误的颜色。
You're better to use Resources["TransparentBrush"] as the background, and then save to png, otherwise, your tile will be the wrong color on a theme change.