1 // Copyright (C) 2002-2012 Nikolaus Gebhardt
2 // This file is part of the "Irrlicht Engine".
3 // For conditions of distribution and use, see copyright notice in irrlicht.h
4
5 #include "CGUIModalScreen.h"
6 #ifdef _IRR_COMPILE_WITH_GUI_
7
8 #include "IGUIEnvironment.h"
9 #include "os.h"
10 #include "IVideoDriver.h"
11 #include "IGUISkin.h"
12
13 namespace irr
14 {
15 namespace gui
16 {
17
18 //! constructor
CGUIModalScreen(IGUIEnvironment * environment,IGUIElement * parent,s32 id)19 CGUIModalScreen::CGUIModalScreen(IGUIEnvironment* environment, IGUIElement* parent, s32 id)
20 : IGUIElement(EGUIET_MODAL_SCREEN, environment, parent, id, core::recti(0, 0, parent->getAbsolutePosition().getWidth(), parent->getAbsolutePosition().getHeight()) ),
21 MouseDownTime(0)
22 {
23 #ifdef _DEBUG
24 setDebugName("CGUIModalScreen");
25 #endif
26 setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
27
28 // this element is a tab group
29 setTabGroup(true);
30 }
31
canTakeFocus(IGUIElement * target) const32 bool CGUIModalScreen::canTakeFocus(IGUIElement* target) const
33 {
34 return (target && ((const IGUIElement*)target == this // this element can take it
35 || isMyChild(target) // own children also
36 || (target->getType() == EGUIET_MODAL_SCREEN ) // other modals also fine (is now on top or explicitely requested)
37 || (target->getParent() && target->getParent()->getType() == EGUIET_MODAL_SCREEN ))) // children of other modals will do
38 ;
39 }
40
isVisible() const41 bool CGUIModalScreen::isVisible() const
42 {
43 // any parent invisible?
44 IGUIElement * parentElement = getParent();
45 while ( parentElement )
46 {
47 if ( !parentElement->isVisible() )
48 return false;
49 parentElement = parentElement->getParent();
50 }
51
52 // if we have no children then the modal is probably abused as a way to block input
53 if ( Children.empty() )
54 {
55 return IGUIElement::isVisible();
56 }
57
58 // any child visible?
59 bool visible = false;
60 core::list<IGUIElement*>::ConstIterator it = Children.begin();
61 for (; it != Children.end(); ++it)
62 {
63 if ( (*it)->isVisible() )
64 {
65 visible = true;
66 break;
67 }
68 }
69 return visible;
70 }
71
isPointInside(const core::position2d<s32> & point) const72 bool CGUIModalScreen::isPointInside(const core::position2d<s32>& point) const
73 {
74 return true;
75 }
76
77 //! called if an event happened.
OnEvent(const SEvent & event)78 bool CGUIModalScreen::OnEvent(const SEvent& event)
79 {
80 if (!isEnabled() || !isVisible() )
81 return IGUIElement::OnEvent(event);
82
83 switch(event.EventType)
84 {
85 case EET_GUI_EVENT:
86 switch(event.GUIEvent.EventType)
87 {
88 case EGET_ELEMENT_FOCUSED:
89 if ( event.GUIEvent.Caller == this && isMyChild(event.GUIEvent.Element) )
90 {
91 Environment->removeFocus(0); // can't setFocus otherwise at it still has focus here
92 Environment->setFocus(event.GUIEvent.Element);
93 MouseDownTime = os::Timer::getTime();
94 return true;
95 }
96 if ( !canTakeFocus(event.GUIEvent.Caller))
97 {
98 if ( !Children.empty() )
99 Environment->setFocus(*(Children.begin()));
100 else
101 Environment->setFocus(this);
102 }
103 IGUIElement::OnEvent(event);
104 return false;
105 case EGET_ELEMENT_FOCUS_LOST:
106 if ( !canTakeFocus(event.GUIEvent.Element))
107 {
108 if ( isMyChild(event.GUIEvent.Caller) )
109 {
110 if ( !Children.empty() )
111 Environment->setFocus(*(Children.begin()));
112 else
113 Environment->setFocus(this);
114 }
115 else
116 {
117 MouseDownTime = os::Timer::getTime();
118 }
119 return true;
120 }
121 else
122 {
123 return IGUIElement::OnEvent(event);
124 }
125 case EGET_ELEMENT_CLOSED:
126 // do not interfere with children being removed
127 return IGUIElement::OnEvent(event);
128 default:
129 break;
130 }
131 break;
132 case EET_MOUSE_INPUT_EVENT:
133 if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
134 {
135 MouseDownTime = os::Timer::getTime();
136 }
137 default:
138 break;
139 }
140
141 IGUIElement::OnEvent(event); // anyone knows why events are passed on here? Causes p.e. problems when this is child of a CGUIWindow.
142
143 return true; // absorb everything else
144 }
145
146
147 //! draws the element and its children
draw()148 void CGUIModalScreen::draw()
149 {
150 IGUISkin *skin = Environment->getSkin();
151
152 if (!skin)
153 return;
154
155 u32 now = os::Timer::getTime();
156 if (now - MouseDownTime < 300 && (now / 70)%2)
157 {
158 core::list<IGUIElement*>::Iterator it = Children.begin();
159 core::rect<s32> r;
160 video::SColor c = Environment->getSkin()->getColor(gui::EGDC_3D_HIGH_LIGHT);
161
162 for (; it != Children.end(); ++it)
163 {
164 if ((*it)->isVisible())
165 {
166 r = (*it)->getAbsolutePosition();
167 r.LowerRightCorner.X += 1;
168 r.LowerRightCorner.Y += 1;
169 r.UpperLeftCorner.X -= 1;
170 r.UpperLeftCorner.Y -= 1;
171
172 skin->draw2DRectangle(this, c, r, &AbsoluteClippingRect);
173 }
174 }
175 }
176
177 IGUIElement::draw();
178 }
179
180
181 //! Removes a child.
removeChild(IGUIElement * child)182 void CGUIModalScreen::removeChild(IGUIElement* child)
183 {
184 IGUIElement::removeChild(child);
185
186 if (Children.empty())
187 {
188 remove();
189 }
190 }
191
192
193 //! adds a child
addChild(IGUIElement * child)194 void CGUIModalScreen::addChild(IGUIElement* child)
195 {
196 IGUIElement::addChild(child);
197 Environment->setFocus(child);
198 }
199
200
updateAbsolutePosition()201 void CGUIModalScreen::updateAbsolutePosition()
202 {
203 core::rect<s32> parentRect(0,0,0,0);
204
205 if (Parent)
206 {
207 parentRect = Parent->getAbsolutePosition();
208 RelativeRect.UpperLeftCorner.X = 0;
209 RelativeRect.UpperLeftCorner.Y = 0;
210 RelativeRect.LowerRightCorner.X = parentRect.getWidth();
211 RelativeRect.LowerRightCorner.Y = parentRect.getHeight();
212 }
213
214 IGUIElement::updateAbsolutePosition();
215 }
216
217
218 //! Writes attributes of the element.
serializeAttributes(io::IAttributes * out,io::SAttributeReadWriteOptions * options=0) const219 void CGUIModalScreen::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
220 {
221 IGUIElement::serializeAttributes(out,options);
222 }
223
224 //! Reads attributes of the element
deserializeAttributes(io::IAttributes * in,io::SAttributeReadWriteOptions * options=0)225 void CGUIModalScreen::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
226 {
227 IGUIElement::deserializeAttributes(in, options);
228 }
229
230
231 } // end namespace gui
232 } // end namespace irr
233
234 #endif // _IRR_COMPILE_WITH_GUI_
235
236