irrlicht/source/Irrlicht/CGUIMenu.cpp

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CGUIMenu.h"
#ifdef _IRR_COMPILE_WITH_GUI_
#include "IGUISkin.h"
#include "IGUIEnvironment.h"
#include "IVideoDriver.h"
#include "IGUIFont.h"
#include "IGUIWindow.h"
#include "os.h"
namespace irr
{
namespace gui
{
//! constructor
CGUIMenu::CGUIMenu(IGUIEnvironment* environment, IGUIElement* parent,
s32 id, core::rect<s32> rectangle)
: CGUIContextMenu(environment, parent, id, rectangle, false, true)
{
#ifdef _DEBUG
setDebugName("CGUIMenu");
#endif
Type = EGUIET_MENU;
setNotClipped(false);
recalculateSize();
}
//! draws the element and its children
void CGUIMenu::draw()
{
if (!IsVisible)
return;
IGUISkin* skin = Environment->getSkin();
if ( !skin )
return;
IGUIFont* font = skin->getFont(EGDF_MENU);
if (font != LastFont)
{
if (LastFont)
LastFont->drop();
LastFont = font;
if (LastFont)
LastFont->grab();
recalculateSize();
}
core::rect<s32> rect = AbsoluteRect;
// draw frame
skin->draw3DToolBar(this, rect, &AbsoluteClippingRect);
// loop through all menu items
rect = AbsoluteRect;
for (s32 i=0; i<(s32)Items.size(); ++i)
{
if (!Items[i].IsSeparator)
{
rect = getRect(Items[i], AbsoluteRect);
// draw highlighted
if (i == HighLighted && Items[i].Enabled)
{
skin->draw3DSunkenPane(this, skin->getColor(EGDC_3D_DARK_SHADOW),
true, true, rect, &AbsoluteClippingRect);
}
// draw text
EGUI_DEFAULT_COLOR c = EGDC_BUTTON_TEXT;
if (i == HighLighted)
c = EGDC_HIGH_LIGHT_TEXT;
if (!Items[i].Enabled)
c = EGDC_GRAY_TEXT;
if (font)
font->draw(Items[i].Text.c_str(), rect,
skin->getColor(c), true, true, &AbsoluteClippingRect);
}
}
IGUIElement::draw();
}
//! called if an event happened.
bool CGUIMenu::OnEvent(const SEvent& event)
{
if (isEnabled())
{
switch(event.EventType)
{
case EET_GUI_EVENT:
switch(event.GUIEvent.EventType)
{
case gui::EGET_ELEMENT_FOCUS_LOST:
if (event.GUIEvent.Caller == this && !isMyChild(event.GUIEvent.Element))
{
closeAllSubMenus();
HighLighted = -1;
}
break;
case gui::EGET_ELEMENT_FOCUSED:
if (event.GUIEvent.Caller == this && Parent)
{
Parent->bringToFront(this);
}
break;
default:
break;
}
break;
case EET_MOUSE_INPUT_EVENT:
switch(event.MouseInput.Event)
{
case EMIE_LMOUSE_PRESSED_DOWN:
{
if (Parent)
Parent->bringToFront(this);
core::position2d<s32> p(event.MouseInput.X, event.MouseInput.Y);
bool shouldCloseSubMenu = hasOpenSubMenu();
if (!AbsoluteClippingRect.isPointInside(p))
{
shouldCloseSubMenu = false;
}
highlight(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y), true);
if ( shouldCloseSubMenu )
{
Environment->removeFocus(this);
}
return true;
}
case EMIE_LMOUSE_LEFT_UP:
{
core::position2d<s32> p(event.MouseInput.X, event.MouseInput.Y);
if (!AbsoluteClippingRect.isPointInside(p))
{
s32 t = sendClick(p);
if ((t==0 || t==1) && Environment->hasFocus(this))
Environment->removeFocus(this);
}
return true;
}
case EMIE_MOUSE_MOVED:
if (Environment->hasFocus(this) && HighLighted >= 0)
{
s32 oldHighLighted = HighLighted;
highlight(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y), true);
if ( HighLighted < 0 )
HighLighted = oldHighLighted; // keep last hightlight active when moving outside the area
}
return true;
default:
break;
}
break;
default:
break;
}
}
return IGUIElement::OnEvent(event);
}
void CGUIMenu::recalculateSize()
{
core::rect<s32> clientRect; // client rect of parent
if ( Parent && Parent->hasType(EGUIET_WINDOW) )
{
clientRect = static_cast<IGUIWindow*>(Parent)->getClientRect();
}
else if ( Parent )
{
clientRect = core::rect<s32>(0,0, Parent->getAbsolutePosition().getWidth(),
Parent->getAbsolutePosition().getHeight());
}
else
{
clientRect = RelativeRect;
}
IGUISkin* skin = Environment->getSkin();
if ( !skin )
return;
IGUIFont* font = skin->getFont(EGDF_MENU);
if (!font)
{
if (Parent && skin)
RelativeRect = core::rect<s32>(clientRect.UpperLeftCorner.X, clientRect.UpperLeftCorner.Y,
clientRect.LowerRightCorner.X, clientRect.UpperLeftCorner.Y+skin->getSize(EGDS_MENU_HEIGHT));
return;
}
core::rect<s32> rect;
rect.UpperLeftCorner = clientRect.UpperLeftCorner;
s32 height = font->getDimension(L"A").Height + 5;
//if (skin && height < skin->getSize ( EGDS_MENU_HEIGHT ))
// height = skin->getSize(EGDS_MENU_HEIGHT);
s32 width = rect.UpperLeftCorner.X;
s32 i;
for (i=0; i<(s32)Items.size(); ++i)
{
if (Items[i].IsSeparator)
{
Items[i].Dim.Width = 0;
Items[i].Dim.Height = height;
}
else
{
Items[i].Dim = font->getDimension(Items[i].Text.c_str());
Items[i].Dim.Width += 20;
}
Items[i].PosY = width;
width += Items[i].Dim.Width;
}
width = clientRect.getWidth();
rect.LowerRightCorner.X = rect.UpperLeftCorner.X + width;
rect.LowerRightCorner.Y = rect.UpperLeftCorner.Y + height;
setRelativePosition(rect);
// recalculate submenus
for (i=0; i<(s32)Items.size(); ++i)
if (Items[i].SubMenu)
{
// move submenu
s32 w = Items[i].SubMenu->getAbsolutePosition().getWidth();
s32 h = Items[i].SubMenu->getAbsolutePosition().getHeight();
Items[i].SubMenu->setRelativePosition(
core::rect<s32>(Items[i].PosY, height ,
Items[i].PosY+w-5, height+h));
}
}
//! returns the item highlight-area
core::rect<s32> CGUIMenu::getHRect(const SItem& i, const core::rect<s32>& absolute) const
{
core::rect<s32> r = absolute;
r.UpperLeftCorner.X += i.PosY;
r.LowerRightCorner.X = r.UpperLeftCorner.X + i.Dim.Width;
return r;
}
//! Gets drawing rect of Item
core::rect<s32> CGUIMenu::getRect(const SItem& i, const core::rect<s32>& absolute) const
{
return getHRect(i, absolute);
}
void CGUIMenu::updateAbsolutePosition()
{
if (Parent)
DesiredRect.LowerRightCorner.X = Parent->getAbsolutePosition().getWidth();
IGUIElement::updateAbsolutePosition();
}
} // end namespace
} // end namespace
#endif // _IRR_COMPILE_WITH_GUI_