private void DiscoverSamples()
{
// Automatically find all samples using reflection. Samples are derived from
// GameComponent and have a SampleAttribute.
_samples = Assembly.GetCallingAssembly()
.GetTypes()
.Where(t => typeof(GameComponent).IsAssignableFrom(t) &&
SampleAttribute.GetSampleAttribute(t) != null)
.ToList();
_samples.Sort(CompareSamples);
if (_samples.Count == 0)
{
throw new Exception("No samples found.");
}
}
// Look for a game component marked with a SampleAttribute.
private static bool FindSample(GameComponentCollection gameComponents, out string sampleName, out SampleAttribute sampleAttribute)
{
foreach (var gameComponent in gameComponents)
{
var type = gameComponent.GetType();
sampleAttribute = SampleAttribute.GetSampleAttribute(type);
if (sampleAttribute != null)
{
// Sample found.
sampleName = type.Name;
return(true);
}
}
// No sample found.
sampleName = null;
sampleAttribute = null;
return(false);
}
private static int CompareSamples(Type sampleA, Type sampleB)
{
var sampleAttributeA = SampleAttribute.GetSampleAttribute(sampleA);
var sampleAttributeB = SampleAttribute.GetSampleAttribute(sampleB);
// Sort by category ...
var categoryA = sampleAttributeA.Category;
var categoryB = sampleAttributeB.Category;
if (categoryA < categoryB)
{
return(-1);
}
if (categoryA > categoryB)
{
return(+1);
}
// ... then by sample order.
int orderA = sampleAttributeA.Order;
int orderB = sampleAttributeB.Order;
return(orderA - orderB);
}
private void InitializeGui()
{
// Add the GuiGraphicsScreen to the graphics service.
_guiGraphicsScreen = new GuiGraphicsScreen(_services);
_graphicsService.Screens.Add(_guiGraphicsScreen);
// Add the Settings window (v-sync, fixed/variable timing, parallel game loop).
_settingsWindow = new SettingsWindow(_services)
{
X = 1000,
Y = 500,
MinHeight = 0,
};
_settingsWindow.Show(_guiGraphicsScreen.UIScreen);
// Create a window with a tab control.
_menuWindow = new Window
{
Title = "Select Sample",
X = 50,
Y = 50,
Width = 800,
Height = 554,
CloseButtonStyle = null
};
_menuWindow.Show(_guiGraphicsScreen.UIScreen);
// Each tab shows a sample category (Base, Mathematics, Geometry, ...).
var samplesByCategory = _samples.GroupBy(t => SampleAttribute.GetSampleAttribute(t).Category);
var tabControl = new TabControl
{
Margin = new Vector4F(4),
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch,
};
_menuWindow.Content = tabControl;
int category = -1;
foreach (var grouping in samplesByCategory)
{
category++;
var tabItem = new TabItem
{
Content = new TextBlock {
Text = grouping.Key.ToString()
},
};
tabControl.Items.Add(tabItem);
// Optional: When the TabControl.SelectedIndex is changed, activate the
// first sample of the category.
//Type firstSample = grouping.First();
//var firstSampleIndex = _samples.IndexOf(firstSample);
//var selectedIndexProperty = tabControl.Properties.Get<int>("SelectedIndex");
//int c = category;
//selectedIndexProperty.Changed += (s, e) =>
//{
// if (tabControl.SelectedIndex == c)
// _nextSampleIndex = firstSampleIndex;
//};
// Each TabItem contains a horizontal stack panel. The horizontal panel
// contains vertical stack panels with up to N buttons per vertical panel.
var horizontalPanel = new StackPanel
{
Orientation = Orientation.Horizontal,
Margin = new Vector4F(2, 0, 2, 0),
};
tabItem.TabPage = horizontalPanel;
StackPanel verticalPanel = null;
int i = -1;
foreach (Type sample in grouping)
{
i = (i + 1) % 15;
if (i == 0)
{
verticalPanel = new StackPanel
{
Orientation = Orientation.Vertical,
};
horizontalPanel.Children.Add(verticalPanel);
}
string summary = SampleAttribute.GetSampleAttribute(sample).Summary;
var button = new Button
{
Content = new TextBlock {
Text = sample.Name, Margin = new Vector4F(0, 2, 0, 2)
},
HorizontalAlignment = HorizontalAlignment.Stretch,
Margin = new Vector4F(4),
ToolTip = string.IsNullOrEmpty(summary) ? null : summary
};
var sampleIndex = _samples.IndexOf(sample);
button.Click += (s, e) => _nextSampleIndex = sampleIndex;
Debug.Assert(verticalPanel != null);
verticalPanel.Children.Add(button);
}
}
}
