// Constructor.
internal Widget(Display dpy, Screen screen,
DrawableKind kind, Widget parent)
: base(dpy, screen, kind)
{
// Set the initial widget properties.
cursor = null;
autoMapChildren = true;
sensitive = true;
// Insert this widget into the widget tree under its parent.
this.parent = parent;
this.topChild = null;
this.nextAbove = null;
if(parent != null)
{
ancestorSensitive =
(parent.sensitive && parent.ancestorSensitive);
nextBelow = parent.topChild;
if(parent.topChild != null)
{
parent.topChild.nextAbove = this;
}
parent.topChild = this;
}
else
{
ancestorSensitive = true;
nextBelow = null;
}
this.eventMask = 0;
}
// Modify the cursor on a widget.
internal static void ModifyCursor
(Widget widget, ToolkitCursorType cursorType, Frame frame)
{
if (cursorType == ToolkitCursorType.InheritParent)
{
// Change the cursor back to the same value as the parent.
widget.Cursor = null;
}
else if (cursorType == ToolkitCursorType.Default)
{
// Set the default cursor to something matching X.
widget.Cursor = new Cursor(CursorType.XC_left_ptr);
}
else
{
// Create a cursor based on the supplied image.
if (frame != null &&
/* irgnore pixel format !
* frame.PixelFormat == DotGNU.Images.PixelFormat.Format1bppIndexed
* &&
*/
frame.Mask != null)
{
if (cursorType != ToolkitCursorType.UserDefined)
{
lock (typeof(DrawingWindow))
{
if (cursors == null)
{
cursors = new Xsharp.Cursor [32];
}
Xsharp.Cursor curs = cursors[(int)cursorType];
if (curs == null)
{
cursors[(int)cursorType] = curs =
new Xsharp.Cursor
(widget.Screen, frame);
}
widget.Cursor = curs;
}
}
else
{
widget.Cursor = new Xsharp.Cursor
(widget.Screen, frame);
}
return;
}
// Last ditch attempt - use the nearest X11 cursor.
CursorType type;
switch (cursorType)
{
case ToolkitCursorType.AppStarting:
type = CursorType.XC_watch;
break;
case ToolkitCursorType.Arrow:
case ToolkitCursorType.Default:
type = CursorType.XC_left_ptr;
break;
case ToolkitCursorType.Cross:
type = CursorType.XC_crosshair;
break;
case ToolkitCursorType.IBeam:
type = CursorType.XC_xterm;
break;
case ToolkitCursorType.No:
type = CursorType.XC_X_cursor;
break;
case ToolkitCursorType.SizeAll:
type = CursorType.XC_fleur;
break;
case ToolkitCursorType.SizeNS:
case ToolkitCursorType.VSplit:
type = CursorType.XC_sb_v_double_arrow;
break;
case ToolkitCursorType.SizeWE:
case ToolkitCursorType.HSplit:
type = CursorType.XC_sb_h_double_arrow;
break;
case ToolkitCursorType.UpArrow:
type = CursorType.XC_sb_up_arrow;
break;
case ToolkitCursorType.WaitCursor:
type = CursorType.XC_watch;
break;
case ToolkitCursorType.Help:
type = CursorType.XC_question_arrow;
break;
case ToolkitCursorType.Hand:
type = CursorType.XC_hand2;
break;
case ToolkitCursorType.SizeNWSE:
case ToolkitCursorType.SizeNESW:
case ToolkitCursorType.NoMove2D:
case ToolkitCursorType.NoMoveHoriz:
case ToolkitCursorType.NoMoveVert:
case ToolkitCursorType.PanEast:
case ToolkitCursorType.PanNE:
case ToolkitCursorType.PanNorth:
case ToolkitCursorType.PanNW:
case ToolkitCursorType.PanSE:
case ToolkitCursorType.PanSouth:
case ToolkitCursorType.PanSW:
case ToolkitCursorType.PanWest:
case ToolkitCursorType.UserDefined:
default:
type = CursorType.XC_circle;
break;
}
widget.Cursor = new Cursor(type);
}
}
// Perform a hit test and set the cursor to the appropriate value.
private HitTest SetCursor(int x, int y)
{
HitTest test = PerformHitTest(x, y);
CursorType cursor;
switch(test)
{
case HitTest.TopLeft:
cursor = CursorType.XC_top_left_corner;
break;
case HitTest.TopRight:
cursor = CursorType.XC_top_right_corner;
break;
case HitTest.BottomLeft:
cursor = CursorType.XC_bottom_left_corner;
break;
case HitTest.BottomRight:
cursor = CursorType.XC_bottom_right_corner;
break;
case HitTest.Top:
cursor = CursorType.XC_top_side;
break;
case HitTest.Bottom:
cursor = CursorType.XC_bottom_side;
break;
case HitTest.Left:
cursor = CursorType.XC_left_side;
break;
case HitTest.Right:
cursor = CursorType.XC_right_side;
break;
default:
cursor = CursorType.XC_inherit_parent;
break;
}
Cursor = new Cursor(cursor);
return test;
}
// Modify the cursor on a widget.
internal static void ModifyCursor
(Widget widget, ToolkitCursorType cursorType, Frame frame)
{
if(cursorType == ToolkitCursorType.InheritParent)
{
// Change the cursor back to the same value as the parent.
widget.Cursor = null;
}
else if(cursorType == ToolkitCursorType.Default)
{
// Set the default cursor to something matching X.
widget.Cursor = new Cursor(CursorType.XC_left_ptr);
}
else
{
// Create a cursor based on the supplied image.
if(frame != null &&
/* irgnore pixel format !
frame.PixelFormat == DotGNU.Images.PixelFormat.Format1bppIndexed
&&
*/
frame.Mask != null)
{
if(cursorType != ToolkitCursorType.UserDefined)
{
lock(typeof(DrawingWindow))
{
if(cursors == null)
{
cursors = new Xsharp.Cursor [32];
}
Xsharp.Cursor curs = cursors[(int)cursorType];
if(curs == null)
{
cursors[(int)cursorType] = curs =
new Xsharp.Cursor
(widget.Screen, frame);
}
widget.Cursor = curs;
}
}
else
{
widget.Cursor = new Xsharp.Cursor
(widget.Screen, frame);
}
return;
}
// Last ditch attempt - use the nearest X11 cursor.
CursorType type;
switch(cursorType)
{
case ToolkitCursorType.AppStarting:
type = CursorType.XC_watch;
break;
case ToolkitCursorType.Arrow:
case ToolkitCursorType.Default:
type = CursorType.XC_left_ptr;
break;
case ToolkitCursorType.Cross:
type = CursorType.XC_crosshair;
break;
case ToolkitCursorType.IBeam:
type = CursorType.XC_xterm;
break;
case ToolkitCursorType.No:
type = CursorType.XC_X_cursor;
break;
case ToolkitCursorType.SizeAll:
type = CursorType.XC_fleur;
break;
case ToolkitCursorType.SizeNS:
case ToolkitCursorType.VSplit:
type = CursorType.XC_sb_v_double_arrow;
break;
case ToolkitCursorType.SizeWE:
case ToolkitCursorType.HSplit:
type = CursorType.XC_sb_h_double_arrow;
break;
case ToolkitCursorType.UpArrow:
type = CursorType.XC_sb_up_arrow;
break;
case ToolkitCursorType.WaitCursor:
type = CursorType.XC_watch;
break;
case ToolkitCursorType.Help:
type = CursorType.XC_question_arrow;
break;
case ToolkitCursorType.Hand:
type = CursorType.XC_hand2;
break;
case ToolkitCursorType.SizeNWSE:
case ToolkitCursorType.SizeNESW:
case ToolkitCursorType.NoMove2D:
case ToolkitCursorType.NoMoveHoriz:
case ToolkitCursorType.NoMoveVert:
case ToolkitCursorType.PanEast:
case ToolkitCursorType.PanNE:
case ToolkitCursorType.PanNorth:
case ToolkitCursorType.PanNW:
case ToolkitCursorType.PanSE:
case ToolkitCursorType.PanSouth:
case ToolkitCursorType.PanSW:
case ToolkitCursorType.PanWest:
case ToolkitCursorType.UserDefined:
default:
type = CursorType.XC_circle;
break;
}
widget.Cursor = new Cursor(type);
}
}
