private async void OptScale_Click(object sender, RoutedEventArgs e)
{
var ScaleItems = new ToggleMenuFlyoutItem[] {
optScale100,
optScale125, optScale133, optScale150,
optScale200, optScale250,
optScale300,
optScale400
};
foreach (var item in ScaleItems)
{
if (item == sender)
{
item.IsChecked = true;
var btnName = item.Name;
CURRENT_SCALE = int.Parse(btnName.Substring("optScale".Length));
var ret = await MathView.InvokeScriptAsync("ChangeScale", new string[] { $"{CURRENT_SCALE}" });
}
else
{
item.IsChecked = false;
}
}
Settings.Set("MathScale", CURRENT_SCALE);
}
private async void OptColor_Click(object sender, RoutedEventArgs e)
{
var btn = sender as MenuFlyoutItem;
var C_NAME = btn.Name.Substring(3);
switch (C_NAME)
{
case "ResetColor":
CURRENT_BGCOLOR = Color.FromArgb(0, 255, 255, 255);
CURRENT_FGCOLOR = Colors.Black; // Color.FromArgb(255, 000, 000, 000);
MathView.DefaultBackgroundColor = CURRENT_BGCOLOR;
break;
case "BgColor":
CURRENT_BGCOLOR = await Utils.ShowColorDialog(CURRENT_BGCOLOR);
MathView.DefaultBackgroundColor = CURRENT_BGCOLOR;
break;
case "FgColor":
CURRENT_FGCOLOR = await Utils.ShowColorDialog(CURRENT_FGCOLOR);
break;
default:
break;
}
var ret = await MathView.InvokeScriptAsync("ChangeColor", new string[] { CURRENT_FGCOLOR.ToCssRGBA(), CURRENT_BGCOLOR.ToCssRGBA() });
//await GetMathImage(true);
}
private async Task <WriteableBitmap> GetMathCapture()
{
using (Windows.Storage.Streams.InMemoryRandomAccessStream rs = new Windows.Storage.Streams.InMemoryRandomAccessStream())
{
if (MathView.DefaultBackgroundColor.A == 0x00)
{
await MathView.InvokeScriptAsync("ChangeColor", new string[] { CURRENT_FGCOLOR.ToCssRGBA(), Colors.White.ToCssRGBA() });
}
await MathView.CapturePreviewToStreamAsync(rs);
await rs.FlushAsync();
var wb = await rs.ToWriteableBitmap();
if (wb is WriteableBitmap)
{
wb = wb.Crop(2);
}
if (MathView.DefaultBackgroundColor.A == 0x00)
{
await MathView.InvokeScriptAsync("ChangeColor", new string[] { CURRENT_FGCOLOR.ToCssRGBA(), CURRENT_BGCOLOR.ToCssRGBA() });
}
return(wb);
}
}
private async Task <WriteableBitmap> GetMathImage(bool force = false)
{
if (CURRENT_IMAGE == null || force)
{
var scale = await MathView.InvokeScriptAsync("GetPageZoomRatio", null);
var ratio = 1.0;
double.TryParse(scale, out ratio);
if (ratio <= 0.0)
{
ratio = 1.0;
}
//else ratio = Math.Ceiling(ratio);
var wb = await MathView.ToWriteableBitmap();
if (wb is WriteableBitmap)
{
var space = 2;
var tolerance = space * 2;
var size = await MathView.InvokeScriptAsync("GetEquationRect", null);
if (!string.IsNullOrEmpty(size))
{
try
{
var sv = size.Split(',');
var l = (int)Math.Floor(double.Parse(sv[0].Trim()));
var t = (int)Math.Floor(double.Parse(sv[1].Trim()));
var w = (int)Math.Ceiling(double.Parse(sv[2].Trim()));
var h = (int)Math.Ceiling(double.Parse(sv[3].Trim()));
l = (int)Math.Min(l * ratio, Math.Max(0, l - tolerance));
t = (int)Math.Min(t * ratio, Math.Max(0, t - tolerance));
w = (int)Math.Max(w + tolerance * 2, Math.Min(wb.PixelWidth, w * Math.Ceiling(ratio) + tolerance * 2));
h = (int)Math.Max(h + tolerance * 2, Math.Min(wb.PixelHeight, h * Math.Ceiling(ratio) + tolerance * 2));
wb = wb.Crop(l, t, w, h);
}
catch (Exception)
{
}
}
wb = wb.Crop(space);
}
CURRENT_IMAGE = wb;
}
return(CURRENT_IMAGE);
}
private async void Page_Loaded(object sender, RoutedEventArgs e)
{
try
{
var ret = await MathView.InvokeScriptAsync("ChangeColor", new string[] { CURRENT_FGCOLOR.ToCssRGBA(), CURRENT_BGCOLOR.ToCssRGBA() });
//var ret = await mathView.InvokeScriptAsync("LoadMathJax", null);
//if (ret.Equals("OK", StringComparison.CurrentCultureIgnoreCase))
{
//edSrc.IsEnabled = true;
}
}
catch
{
}
}
private async Task <Size> GetMathSize()
{
Size result = Size.Empty;
var scale = await MathView.InvokeScriptAsync("GetPageZoomRatio", null);
var ratio = 1.0;
double.TryParse(scale, out ratio);
if (ratio == 0.0)
{
ratio = 1;
}
else
{
ratio = Math.Max(0, ratio);
}
var space = 2;
var tolerance = space * 2;
var size = await MathView.InvokeScriptAsync("GetEquationRect", null);
if (!string.IsNullOrEmpty(size))
{
try
{
var sv = size.Split(',');
var l = (int)Math.Floor(double.Parse(sv[0].Trim()));
var t = (int)Math.Floor(double.Parse(sv[1].Trim()));
var w = (int)Math.Ceiling(double.Parse(sv[2].Trim()));
var h = (int)Math.Ceiling(double.Parse(sv[3].Trim()));
l = Math.Max(0, l - tolerance);
t = Math.Max(0, t - tolerance);
w = Math.Max(w, (int)(w * ratio) + tolerance * 2);
h = Math.Max(h, (int)(h * ratio) + tolerance * 2);
result.Width = w;
result.Height = h;
}
catch (Exception)
{
}
}
return(result);
}
private async Task <bool> GeneratingMath()
{
bool result = false;
var lines = edSrc.Text.Trim().Split(new char[] { '\n', '\r' });
StringBuilder sb = new StringBuilder();
foreach (var l in lines)
{
if (string.IsNullOrEmpty(l))
{
continue;
}
var idx = l.Replace("\\%", "\\\\").IndexOf("%");
var line = idx >= 0 ? l.Substring(0, idx) : l;
if (string.IsNullOrEmpty(line))
{
continue;
}
//if (!line.EndsWith("\\\\")) line = $"{line} \\\\ ";
line = await line.Decoder(TextCodecs.CODEC.HTML, Encoding.UTF8);
sb.AppendLine(line);
}
var tex = string.Join(Environment.NewLine, sb);
if (!string.IsNullOrEmpty(tex))
{
try
{
ResetMathView();
var ret = await MathView.InvokeScriptAsync("ChangeEquation", new string[] { tex });
if (ret.Equals("OK", StringComparison.CurrentCultureIgnoreCase))
{
result = true;
}
SetMathView();
CURRENT_FORMULAR = tex;
}
catch (Exception) { }
}
return(result);
}
