C# Id.CastTo方法代码示例

partial         void ChangeTranslateY(Id sender)
        {
            NSStepper stepper = sender.CastTo<NSStepper>();
            float value = this.TranslateY + stepper.FloatValue;
            this.TranslateY = value;
            stepper.FloatValue = 0.0f;
        }

partial         void ChangeFontStyle(Id sender)
        {
            NSFont theFont;
            int itemIndex;

            // If the sender is an NSMenuItem then this is the menuFormRepresentation.  Otherwise, we're being called from
            // the NSPopUpButton.  We need to check this to find out how to calculate the index of the picked menu item.
            if (FoundationFramework.NSStringFromClass(sender.Class).IsEqualToString("NSMenuItem"))
            {
                NSMenuItem item = sender.CastTo<NSMenuItem>();
                itemIndex = item.Menu.IndexOfItem(item) - 1; // for ordinary NSMenus, the title is item #0, so we have to offset things
            }
            else
            {
                NSPopUpButton button = sender.CastTo<NSPopUpButton>();
                itemIndex = button.IndexOfSelectedItem; // this is an NSPopUpButton, so the first useful item really is #0
            }

            this.fontSizeField.TakeIntValueFrom(this.fontSizeStepper);
            theFont = this.contentView.Font;

            // set the font properties depending upon what was selected
            if (itemIndex == 0)
            {
                theFont = NSFontManager.SharedFontManager.ConvertFontToNotHaveTrait(theFont, NSFontTraitMask.NSItalicFontMask);
                theFont = NSFontManager.SharedFontManager.ConvertFontToNotHaveTrait(theFont, NSFontTraitMask.NSBoldFontMask);
            }
            else if (itemIndex == 1)
            {
                theFont = NSFontManager.SharedFontManager.ConvertFontToNotHaveTrait(theFont, NSFontTraitMask.NSItalicFontMask);
                theFont = NSFontManager.SharedFontManager.ConvertFontToHaveTrait(theFont, NSFontTraitMask.NSBoldFontMask);
            }
            else if (itemIndex == 2)
            {
                theFont = NSFontManager.SharedFontManager.ConvertFontToHaveTrait(theFont, NSFontTraitMask.NSItalicFontMask);
                theFont = NSFontManager.SharedFontManager.ConvertFontToNotHaveTrait(theFont, NSFontTraitMask.NSBoldFontMask);
            }
            // make sure the fontStylePicked variable matches the menu selection plus 1, which also matches
            // the menu item tags in the menuFormRepresentation (see the menu in Interface Builder), so
            // that -validateMenuItem: can do its work.
            this.fontStylePicked = itemIndex + 1;
            this.contentView.Font = theFont;
        }

partial         void ChangeScaleX(Id sender)
        {
            NSStepper stepper = sender.CastTo<NSStepper>();
            float value = this.ScaleX + stepper.FloatValue;
            this.ScaleX = value;
            stepper.FloatValue = 0.0f;
        }

 public Id OutlineViewObjectValueForTableColumnByItem(NSOutlineView outlineView, NSTableColumn tableColumn, Id item)
 {
     PDFOutline outline = item.CastTo<PDFOutline>();
     return outline.Label;
 }

 public NSInteger OutlineViewNumberOfChildrenOfItem(NSOutlineView outlineView, Id item)
 {
     if (item == null)
     {
         if (this._outline != null)
         {
             return (int) this._outline.NumberOfChildren;
         }
         else
         {
             return 0;
         }
     }
     else
     {
         return item.CastTo<PDFOutline>().NumberOfChildren;
     }
 }

 public bool OutlineViewIsItemExpandable(NSOutlineView outlineView, Id item)
 {
     if (item == null)
     {
         if (this._outline != null)
         {
             return (this._outline.NumberOfChildren > 0);
         }
         else
         {
             return false;
         }
     }
     else
     {
         return (item.CastTo<PDFOutline>().NumberOfChildren > 0);
     }
 }

 public Id OutlineViewChildOfItem(NSOutlineView outlineView, NSInteger index, Id item)
 {
     if (item == null)
     {
         if (this._outline != null)
         {
             return this._outline.ChildAtIndex(index).Retain();
         }
         else
         {
             return null;
         }
     }
     else
     {
         return item.CastTo<PDFOutline>().ChildAtIndex((uint) index).Retain();
     }
 }

partial         void ShowPopoverAction(Id sender)
        {
            NSView view = sender.CastTo<NSView> ();

            this.CreatePopover ();

            // configure the preferred position of the popover
            NSRectEdge prefEdge = (NSRectEdge)(int)this.popoverPosition.SelectedRow;

            this.myPopover.ShowRelativeToRectOfViewPreferredEdge (view.Bounds, view, prefEdge);
        }