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[Mac] Initial Origin Control implementation #628

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[Mac] Initial Origin Control implementation #628

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ccd06c2
[Mac] Initial Origin Control implementation
CartBlanche Sep 6, 2019
fc9dcac
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CartBlanche Sep 11, 2019
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99 changes: 92 additions & 7 deletions Xamarin.PropertyEditing.Mac/Controls/BaseRectangleEditorControl.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
using System.Drawing;
using AppKit;
using CoreGraphics;
using Xamarin.PropertyEditing.Drawing;
using Xamarin.PropertyEditing.ViewModels;

namespace Xamarin.PropertyEditing.Mac
Expand All @@ -19,9 +20,15 @@ internal abstract class BaseRectangleEditorControl<T> : PropertyEditorControl<Pr
protected UnfocusableTextField HeightLabel { get; set; }
protected NumericSpinEditor<T> HeightEditor { get; set; }

public override NSView FirstKeyView => XEditor;
public override NSView FirstKeyView => this.firstKeyView;
public override NSView LastKeyView => HeightEditor.DecrementButton;

public NSLayoutConstraint LeftXEditorEdgeConstraint { get; }
private OriginControl originEditor;
private NSLayoutConstraint originViewConstraint;
private CommonOrigin? lastOrigin = CommonOrigin.TopLeft;
private NSView firstKeyView;

protected BaseRectangleEditorControl (IHostResourceProvider hostResources)
: base (hostResources)
{
Expand All @@ -35,7 +42,7 @@ protected BaseRectangleEditorControl (IHostResourceProvider hostResources)
};
XEditor.ValueChanged += OnInputUpdated;

YLabel = new UnfocusableTextField {
YLabel = new UnfocusableTextField {
Font = NSFont.FromFontName (DefaultFontName, DefaultDescriptionLabelFontSize),
TranslatesAutoresizingMaskIntoConstraints = false,
};
Expand All @@ -55,7 +62,7 @@ protected BaseRectangleEditorControl (IHostResourceProvider hostResources)
};
WidthEditor.ValueChanged += OnInputUpdated;

HeightLabel = new UnfocusableTextField {
HeightLabel = new UnfocusableTextField {
Font = NSFont.FromFontName (DefaultFontName, DefaultDescriptionLabelFontSize),
TranslatesAutoresizingMaskIntoConstraints = false,
};
Expand All @@ -74,9 +81,11 @@ protected BaseRectangleEditorControl (IHostResourceProvider hostResources)
AddSubview (HeightLabel);
AddSubview (HeightEditor);

this.AddConstraints (new[] {
LeftXEditorEdgeConstraint = NSLayoutConstraint.Create (XEditor, NSLayoutAttribute.Left, NSLayoutRelation.Equal, this, NSLayoutAttribute.Left, 1f, 0);

AddConstraints (new[] {
NSLayoutConstraint.Create (XEditor, NSLayoutAttribute.Top, NSLayoutRelation.Equal, this, NSLayoutAttribute.Top, 1f, 3f),
NSLayoutConstraint.Create (XEditor, NSLayoutAttribute.Left, NSLayoutRelation.Equal, this, NSLayoutAttribute.Left, 1f, 0f),
LeftXEditorEdgeConstraint,
NSLayoutConstraint.Create (XEditor, NSLayoutAttribute.Right, NSLayoutRelation.Equal, YEditor, NSLayoutAttribute.Left, 1f, -10f),
NSLayoutConstraint.Create (XEditor, NSLayoutAttribute.Height, NSLayoutRelation.Equal, 1f, 18),

Expand All @@ -92,7 +101,7 @@ protected BaseRectangleEditorControl (IHostResourceProvider hostResources)
NSLayoutConstraint.Create (YLabel, NSLayoutAttribute.Height, NSLayoutRelation.Equal, 1f, 18),

NSLayoutConstraint.Create (WidthEditor, NSLayoutAttribute.Top, NSLayoutRelation.Equal, this, NSLayoutAttribute.Top, 1f, 33f),
NSLayoutConstraint.Create (WidthEditor, NSLayoutAttribute.Left, NSLayoutRelation.Equal, this, NSLayoutAttribute.Left, 1f, 0f),
NSLayoutConstraint.Create (WidthEditor, NSLayoutAttribute.Left, NSLayoutRelation.Equal, XEditor, NSLayoutAttribute.Left, 1f, 0f),
NSLayoutConstraint.Create (WidthEditor, NSLayoutAttribute.Right, NSLayoutRelation.Equal, HeightEditor, NSLayoutAttribute.Left, 1f, -10f),
NSLayoutConstraint.Create (WidthEditor, NSLayoutAttribute.Height, NSLayoutRelation.Equal, 1f, 18),

Expand All @@ -114,12 +123,14 @@ protected BaseRectangleEditorControl (IHostResourceProvider hostResources)
NSLayoutConstraint.Create (HeightLabel, NSLayoutAttribute.CenterX, NSLayoutRelation.Equal, HeightEditor.Subviews[0], NSLayoutAttribute.CenterX, 1f, 0),
});

this.firstKeyView = XEditor;

AppearanceChanged ();
}

protected virtual void OnInputUpdated (object sender, EventArgs e)
{
ViewModel.Value = (T)Activator.CreateInstance (typeof(T), XEditor.Value, YEditor.Value, WidthEditor.Value, HeightEditor.Value);
ViewModel.Value = (T)Activator.CreateInstance (typeof (T), XEditor.Value, YEditor.Value, WidthEditor.Value, HeightEditor.Value, this.originEditor.Value);
}

protected override void SetEnabled ()
Expand All @@ -128,6 +139,10 @@ protected override void SetEnabled ()
YEditor.Enabled = ViewModel.Property.CanWrite;
WidthEditor.Enabled = ViewModel.Property.CanWrite;
HeightEditor.Enabled = ViewModel.Property.CanWrite;

if (this.originEditor != null) {
this.originEditor.Enabled = ViewModel.Property.CanWrite;
}
}

protected override void UpdateAccessibilityValues ()
Expand All @@ -154,5 +169,75 @@ protected override void AppearanceChanged ()
WidthLabel.TextColor = HostResources.GetNamedColor (NamedResources.DescriptionLabelColor);
HeightLabel.TextColor = HostResources.GetNamedColor (NamedResources.DescriptionLabelColor);
}

protected override void OnViewModelChanged (PropertyViewModel oldModel)
{
base.OnViewModelChanged (oldModel);

if (ViewModel == null)
return;

LeftXEditorEdgeConstraint.Active = true;

bool hasOrigin = false;
if (ViewModel is RectanglePropertyViewModel rpvm && rpvm.HasOrigin) {
hasOrigin = rpvm.HasOrigin;

LeftXEditorEdgeConstraint.Active = false;

if (this.originEditor == null) {
this.originEditor = new OriginControl (HostResources) {
AccessibilityEnabled = rpvm.Property.CanWrite,
AccessibilityTitle = string.Format (Properties.Resources.AccessibilityOriginEditor, ViewModel.Property.Name),
TranslatesAutoresizingMaskIntoConstraints = false,
};

this.originEditor.OriginChanged += (s, e) => {
this.lastOrigin = this.originEditor.Value;

if (this.originEditor.Value.HasValue) {
var location = this.originEditor.Bounds; // TODO Think this should be the DocumentFrame
if (this.originEditor.Value?.Horizontal != CommonOrigin.Position.Start)
location.X += this.originEditor.Bounds.Width / (this.originEditor.Value?.Horizontal == CommonOrigin.Position.Middle ? 2 : 1);
if (this.originEditor.Value?.Vertical != CommonOrigin.Position.Start)
location.Y += this.originEditor.Bounds.Height / (this.originEditor.Value?.Vertical == CommonOrigin.Position.Middle ? 2 : 1);

if ((nfloat)XEditor.Value != location.X)
XEditor.Value = location.X;
if ((nfloat)YEditor.Value != location.Y)
YEditor.Value = location.Y;

OnInputUpdated (s, e);
}
};

this.originEditor.Value = this.lastOrigin;

AddSubview (this.originEditor);

this.originViewConstraint = NSLayoutConstraint.Create (this.originEditor, NSLayoutAttribute.Right, NSLayoutRelation.Equal, XEditor, NSLayoutAttribute.Left, 1, -4);

AddConstraints (new[] {
NSLayoutConstraint.Create (this.originEditor, NSLayoutAttribute.Top, NSLayoutRelation.Equal, XEditor, NSLayoutAttribute.Top, 1f, 0),
NSLayoutConstraint.Create (this.originEditor, NSLayoutAttribute.Left, NSLayoutRelation.Equal, this, NSLayoutAttribute.Left, 1f, 0),
this.originViewConstraint,
NSLayoutConstraint.Create (this.originEditor, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, this, NSLayoutAttribute.Bottom, 1, -2f),
});

this.firstKeyView = this.originEditor;
}
}

// If we are reusing the control we'll have to hide the originEditor if we don't have Origin.
if (this.originEditor != null) {
this.originEditor.Hidden = !hasOrigin;
this.originViewConstraint.Active = hasOrigin;

if (hasOrigin)
this.originEditor.Value = this.lastOrigin;
}

SetEnabled ();
}
}
}
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