/// <summary>
/// The common logic of the two versions of AddString.
/// </summary>
private ViewBuilder AddStringClientRun(StringClientRun run, Expression <Func <string> > fetchString, Func <string> fetcher)
{
ParaBox para = InsertParaOrRun(run);
// Try to hook an event for notification of changes to the property.
var mexp = (fetchString.Body as MemberExpression);
var argExp = Expression.Lambda <Func <object> >(mexp.Expression);
Type type = mexp.Member.DeclaringType;
string name = mexp.Member.Name;
EventInfo einfo = type.GetEvent(name + "Changed");
if (einfo != null)
{
var target = argExp.Compile().Invoke();
var stringHookup = new StringHookup(target, fetcher,
hookup => einfo.AddEventHandler(target, new EventHandler <EventArgs>(hookup.StringPropChanged)),
hookup => einfo.RemoveEventHandler(target, new EventHandler <EventArgs>(hookup.StringPropChanged)),
para);
AddHookupToRun(run, stringHookup);
var propInfo = type.GetProperty(name);
if (propInfo.CanWrite)
{
stringHookup.Writer = newVal => propInfo.SetValue(target, newVal, null);
}
}
return(this);
}
public void InsertCharInEmptyLine()
{
string contents = "";
var engine = new FakeRenderEngine()
{
Ws = 34, SegmentHeight = 13
};
var factory = new FakeRendererFactory();
factory.SetRenderer(34, engine);
var styles = new AssembledStyles().WithWs(34);
var clientRuns = new List <IClientRun>();
var run = new StringClientRun(contents, styles);
clientRuns.Add(run);
var data1 = new MockData1(34, 35);
data1.SimpleThree = contents;
var source = new TextSource(clientRuns, null);
var para = new ParaBox(styles, source);
var hookup = new StringHookup(this, () => data1.SimpleThree, hook => data1.SimpleThreeChanged += hook.StringPropChanged,
hook => data1.SimpleThreeChanged -= hook.StringPropChanged, para);
hookup.Writer = newVal => data1.SimpleThree = newVal;
run.Hookup = hookup;
var root = new RootBox(styles);
var block = new BlockBox(styles, Color.Red, 20000, 10000);
root.AddBox(block);
root.AddBox(para);
var layoutArgs = MakeLayoutInfo(Int32.MaxValue / 2, m_gm.VwGraphics, factory);
root.Layout(layoutArgs);
Assert.That(root.Height, Is.EqualTo(13 + block.Height));
Assert.That(para.Width, Is.EqualTo(FakeRenderEngine.SimulatedWidth(contents)));
Assert.That(root.Width, Is.EqualTo(block.Width));
int simulatedWidth = FakeRenderEngine.SimulatedWidth("x");
Assert.That(root.Width, Is.GreaterThan(para.Width + simulatedWidth));
PaintTransform ptrans = new PaintTransform(2, 4, 96, 100, 0, 10, 120, 128);
MockSite site = new MockSite();
site.m_transform = ptrans;
site.m_vwGraphics = m_gm.VwGraphics;
root.Site = site;
var oldRootWidth = root.Width;
var ip = root.SelectAtEnd();
ip.InsertText("x");
Assert.That(root.Height, Is.EqualTo(13 + block.Height));
Assert.That(root.Width, Is.EqualTo(oldRootWidth));
Assert.That(para.Width, Is.EqualTo(simulatedWidth));
var expectedInvalidate = new Rectangle(-RootBox.InvalidateMargin,
-RootBox.InvalidateMargin + block.Height,
simulatedWidth + RootBox.InvalidateMargin * 2,
13 + 2 * RootBox.InvalidateMargin);
Assert.That(site.RectsInvalidatedInRoot, Has.Member(expectedInvalidate));
}
private MockData1 HookDataToClientRun(ParaBox para, string contents1, int runIndex)
{
var data1 = new MockData1(ParaBuilderTests.s_simpleStringWs, ParaBuilderTests.s_simpleStringWs);
data1.SimpleThree = contents1;
var hookup = new StringHookup(data1, () => data1.SimpleThree,
hook => data1.SimpleThreeChanged += hook.StringPropChanged,
hook => data1.SimpleThreeChanged -= hook.StringPropChanged, para);
hookup.Writer = newVal => data1.SimpleThree = newVal;
hookup.ClientRunIndex = runIndex;
(para.Source.ClientRuns[runIndex] as StringClientRun).Hookup = hookup;
return(data1);
}
// Add to the root a text paragraph which reflects the SimpleText property.
private void AddSimpleTextPara(AssembledStyles styles, int ws, RootBox root)
{
var items = new List <ClientRun>();
var run = new StringClientRun("This is the day that the Lord has made. We will rejoice and be glad in it",
styles.WithWs(ws));
items.Add(run);
TextSource source = new TextSource(items);
ParaBox para = new ParaBox(styles, source);
var hookup = new StringHookup(this, () => this.SimpleText,
hook => SimpleTextChanged += hook.StringPropChanged,
hook => SimpleTextChanged -= hook.StringPropChanged, para);
hookup.Writer = newVal => SimpleText = newVal;
run.Hookup = hookup;
root.AddBox(para);
}
public void HookupSimpleString()
{
MockData1 data1 = new MockData1(m_wsFrn, m_wsEng);
data1.SimpleThree = "foo";
MockParaBox mockPara = new MockParaBox();
var mlHook = new StringHookup(data1, () => data1.SimpleThree, hookup => data1.SimpleThreeChanged += hookup.StringPropChanged,
hookup => data1.SimpleThreeChanged -= hookup.StringPropChanged, mockPara);
mlHook.ClientRunIndex = 5;
data1.SimpleThree = "bar";
data1.RaiseSimpleThreeChanged();
Assert.AreEqual(5, mockPara.TheIndex, "Should have fired the event and notified the correct index");
Assert.AreEqual("bar", mockPara.TheString, "Should have informed para of new string");
mlHook.Dispose();
}
public void InsertGrowsPara()
{
string contents = "This is the day.";
var engine = new FakeRenderEngine()
{
Ws = 34, SegmentHeight = 13
};
var factory = new FakeRendererFactory();
factory.SetRenderer(34, engine);
var styles = new AssembledStyles().WithWs(34);
var clientRuns = new List <IClientRun>();
var run = new StringClientRun(contents, styles);
clientRuns.Add(run);
var data1 = new MockData1(34, 35);
data1.SimpleThree = contents;
var source = new TextSource(clientRuns, null);
var para = new ParaBox(styles, source);
var hookup = new StringHookup(this, () => data1.SimpleThree, hook => data1.SimpleThreeChanged += hook.StringPropChanged,
hook => data1.SimpleThreeChanged -= hook.StringPropChanged, para);
hookup.Writer = newVal => data1.SimpleThree = newVal;
run.Hookup = hookup;
var extraBox = new BlockBox(styles, Color.Red, 50, 72000);
var root = new RootBoxFdo(styles);
root.SizeChanged += root_SizeChanged;
root.AddBox(para);
root.AddBox(extraBox);
var layoutArgs = MakeLayoutInfo(Int32.MaxValue / 2, m_gm.VwGraphics, factory);
root.Layout(layoutArgs);
Assert.IsTrue(m_sizeChangedCalled);
Assert.That(root.Height, Is.EqualTo(13 + 96));
Assert.That(root.Width, Is.EqualTo(FakeRenderEngine.SimulatedWidth(contents)));
int widthThisIsThe = FakeRenderEngine.SimulatedWidth("This is the");
layoutArgs = MakeLayoutInfo(widthThisIsThe + 2, m_gm.VwGraphics, factory);
root.Layout(layoutArgs);
Assert.That(root.Height, Is.EqualTo(26 + 96), "two line para is twice the height");
Assert.That(root.Width, Is.EqualTo(widthThisIsThe + 2), "two-line para occupies full available width");
Assert.That(extraBox.Top, Is.EqualTo(26));
PaintTransform ptrans = new PaintTransform(2, 4, 96, 100, 0, 10, 120, 128);
MockSite site = new MockSite();
site.m_transform = ptrans;
site.m_vwGraphics = m_gm.VwGraphics;
root.Site = site;
m_sizeChangedCalled = false;
var ip = para.SelectAtEnd();
ip.InsertText(" We will be");
Assert.That(para.Height, Is.EqualTo(39), "inserted text makes para a line higher");
Assert.That(root.Height, Is.EqualTo(39 + 96), "root grows when para does");
Assert.That(root.Width, Is.EqualTo(widthThisIsThe + 2), "three-line para occupies full available width");
Assert.That(extraBox.Top, Is.EqualTo(39));
Assert.IsTrue(m_sizeChangedCalled);
}
