public TabControl()
{
// Prevent flicker with double buffering and all painting inside WM_PAINT
SetStyle(ControlStyles.DoubleBuffer, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.UserPaint, true);
// Create collections
_tabRects = new ArrayList();
_tabPages = new TabPageCollection();
// Hookup to collection events
_tabPages.Clearing += new CollectionClear(OnClearingPages);
_tabPages.Cleared += new CollectionClear(OnClearedPages);
_tabPages.Inserting += new CollectionChange(OnInsertingPage);
_tabPages.Inserted += new CollectionChange(OnInsertedPage);
_tabPages.Removing += new CollectionChange(OnRemovingPage);
_tabPages.Removed += new CollectionChange(OnRemovedPage);
// Define the default state of the control
_startPage = -1;
_pageSelected = -1;
_hotTrackPage = -1;
_imageList = null;
_insetPlain = true;
_multiline = false;
_multilineFullWidth = false;
_dragFromControl = true;
_mouseOver = false;
_leftScroll = false;
_defaultFont = true;
_defaultColor = true;
_rightScroll = false;
_hoverSelect = false;
_leftMouseDown = false;
_ignoreDownDrag = true;
_selectedTextOnly = false;
_leftMouseDownDrag = false;
_insetBorderPagesOnly = false;
_hideTabsMode = HideTabsModes.ShowAlways;
_recordFocus = true;
_styleIndex = 1;
_leaveTimeout = 200;
_ctrlTopOffset = 0;
_ctrlLeftOffset = 0;
_ctrlRightOffset = 0;
_ctrlBottomOffset = 0;
_style = VisualStyle.IDE;
_buttonActiveColor = Color.FromArgb(128, this.ForeColor);
_buttonInactiveColor = _buttonActiveColor;
_textColor = TabControl.DefaultForeColor;
_textInactiveColor = Color.FromArgb(128, _textColor);
_hotTextColor = SystemColors.ActiveCaption;
// Create the panel that hosts each page control. This is done to prevent the problem where a
// hosted Control/Form has 'AutoScaleBaseSize' defined. In which case our attempt to size it the
// first time is ignored and the control sizes itself to big and would overlap the tabs area.
_hostPanel = new HostPanel();
_hostPanel.Location = new Point(-1,-1);
_hostPanel.Size = new Size(0,0);
_hostPanel.MouseEnter += new EventHandler(OnPageMouseEnter);
_hostPanel.MouseLeave += new EventHandler(OnPageMouseLeave);
// Create hover buttons
_closeButton = new InertButton(_internalImages, (int)ImageStrip.Close);
_leftArrow = new InertButton(_internalImages, (int)ImageStrip.LeftEnabled, (int)ImageStrip.LeftDisabled);
_rightArrow = new InertButton(_internalImages, (int)ImageStrip.RightEnabled, (int)ImageStrip.RightDisabled);
// We want our buttons to have very thin borders
_closeButton.BorderWidth = _leftArrow.BorderWidth = _rightArrow.BorderWidth = 1;
// Hookup to the button events
_closeButton.Click += new EventHandler(OnCloseButton);
_leftArrow.Click += new EventHandler(OnLeftArrow);
_rightArrow.Click += new EventHandler(OnRightArrow);
// Set their fixed sizes
_leftArrow.Size = _rightArrow.Size = _closeButton.Size = new Size(_buttonWidth, _buttonHeight);
// Add child controls
Controls.AddRange(new Control[]{_closeButton, _leftArrow, _rightArrow, _hostPanel});
// Grab some contant values
_imageWidth = 16;
_imageHeight = 16;
// Default to having a MultiForm usage
SetAppearance(VisualAppearance.MultiForm);
// Need a timer so that when the mouse leaves, a fractionaly delay occurs before
// noticing and hiding the tabs area when the appropriate style is set
_overTimer = new Timer();
_overTimer.Interval = _leaveTimeout;
_overTimer.Tick += new EventHandler(OnMouseTick);
// Need notification when the MenuFont is changed
Microsoft.Win32.SystemEvents.UserPreferenceChanged +=
new UserPreferenceChangedEventHandler(OnPreferenceChanged);
// Define the default Font, BackColor and Button images
DefineFont(SystemInformation.MenuFont);
DefineBackColor(SystemColors.Control);
DefineButtonImages();
Recalculate();
}
public TabStub(VisualStyle style)
{
// Default state
_wct = null;
_style = style;
_hoverOver = -1;
_hoverItem = -1;
_selectedIndex = -1;
_defaultFont = true;
_defaultColor = true;
_edge = Edge.None;
_drawTabs = new ArrayList();
_tabPages = new TabPageCollection();
base.Font = SystemInformation.MenuFont;
// Hookup to collection events
_tabPages.Cleared += new CollectionClear(OnClearedPages);
_tabPages.Inserted += new CollectionChange(OnInsertedPage);
_tabPages.Removing += new CollectionChange(OnRemovingPage);
_tabPages.Removed += new CollectionChange(OnRemovedPage);
// Need notification when the MenuFont is changed
Microsoft.Win32.SystemEvents.UserPreferenceChanged += new
UserPreferenceChangedEventHandler(OnPreferenceChanged);
// Default default colors
DefineBackColor(SystemColors.Control);
// Create the Timer for handling hovering over items
_hoverTimer = new Timer();
_hoverTimer.Interval = _hoverInterval;
_hoverTimer.Tick += new EventHandler(OnTimerExpire);
}