src/usercontrol.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * usercontrol.cpp:
   4  *
   5  * Copyright 2007 Novell, Inc. (http://www.novell.com)
   6  *
   7  * See the LICENSE file included with the distribution for details.
   8  *
   9  */
  10
  11 #include <config.h>
  12
  13 #include "usercontrol.h"
  14 #include "collection.h"
  15 #include "runtime.h"
  16
  17 UserControl::UserControl ()
  18 {
  19         SetObjectType (Type::USERCONTROL);
  20         SetIsTabStop (false);
  21 }
  22
  23 UserControl::~UserControl ()
  24 {
  25 }
  26
  27 UIElement *
  28 user_control_get_content (UserControl *user_control)
  29 {
  30         Value* v =user_control-> GetValue (UserControl::ContentProperty);
  31         if (!v)
  32                 return NULL;
  33         return v->AsUIElement ();
  34 }
  35
  36 void
  37 UserControl::OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error)
  38 {
  39         if (args->GetProperty ()->GetOwnerType() != Type::USERCONTROL) {
  40                 Control::OnPropertyChanged (args, error);
  41                 return;
  42         }
  43
  44         if (args->GetId () == UserControl::ContentProperty){
  45                 if (args->GetOldValue()) {
  46                         if (args->GetOldValue()->Is(Type::FRAMEWORKELEMENT)) {
  47                                 args->GetOldValue()->AsFrameworkElement()->SetLogicalParent (NULL, error);
  48                                 if (error->number)
  49                                         return;
  50                         }
  51                         ElementRemoved (args->GetOldValue()->AsUIElement ());
  52                 }
  53                 if (args->GetNewValue()) {
  54                         if (args->GetNewValue()->Is(Type::FRAMEWORKELEMENT)) {
  55                                 args->GetNewValue()->AsFrameworkElement()->SetLogicalParent (this, error);
  56                                 if (error->number)
  57                                         return;
  58                         }
  59                         ElementAdded (args->GetNewValue()->AsUIElement ());
  60                 }
  61
  62                 UpdateBounds ();
  63         }
  64         NotifyListenersOfPropertyChange (args, error);
  65 }
  66
  67 Size
  68 UserControl::MeasureOverride (Size availableSize)
  69 {
  70         Size desired = Size (0,0);
  71
  72         availableSize = ApplySizeConstraints (availableSize);
  73
  74         Thickness border = *GetPadding () + *GetBorderThickness ();
  75
  76         // Get the desired size of our child, and include any margins we set
  77         VisualTreeWalker walker = VisualTreeWalker (this);
  78         while (UIElement *child = walker.Step ()) {
  79                 if (child->GetVisibility () != VisibilityVisible)
  80                         continue;
  81
  82                 child->Measure (availableSize.GrowBy (-border));
  83                 desired = child->GetDesiredSize ();
  84         }
  85
  86         desired = desired.GrowBy (border);
  87
  88         return desired;
  89 }
  90
  91 Size
  92 UserControl::ArrangeOverride (Size finalSize)
  93 {
  94         Thickness border = *GetPadding () + *GetBorderThickness ();
  95
  96         finalSize = ApplySizeConstraints (finalSize);
  97
  98         Size arranged = finalSize;
  99
 100         VisualTreeWalker walker = VisualTreeWalker (this);
 101         while (UIElement *child = walker.Step ()) {
 102                 if (child->GetVisibility () != VisibilityVisible)
 103                         continue;
 104
 105                 Size desired = child->GetDesiredSize ();
 106                 Rect childRect (0,0,finalSize.width,finalSize.height);
 107
 108                 childRect = childRect.GrowBy (-border);
 109
 110                 child->Arrange (childRect);
 111                 arranged = child->GetRenderSize ();
 112
 113                 arranged = arranged.GrowBy (border);
 114
 115                 arranged = arranged.Max (finalSize);
 116         }
 117
 118         return arranged;
 119 }