755 lines
16 KiB
C++
755 lines
16 KiB
C++
// Copyright (C) 2002-2009 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CGUIContextMenu.h"
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#ifdef _IRR_COMPILE_WITH_GUI_
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#include "IGUISkin.h"
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#include "IGUIEnvironment.h"
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#include "IVideoDriver.h"
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#include "IGUIFont.h"
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#include "IGUISpriteBank.h"
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#include "os.h"
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namespace irr
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{
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namespace gui
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{
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//! constructor
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CGUIContextMenu::CGUIContextMenu(IGUIEnvironment* environment,
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IGUIElement* parent, s32 id,
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core::rect<s32> rectangle, bool getFocus, bool allowFocus)
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: IGUIContextMenu(environment, parent, id, rectangle), EventParent(0), LastFont(0),
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HighLighted(-1), ChangeTime(0), AllowFocus(allowFocus)
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{
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#ifdef _DEBUG
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setDebugName("CGUIContextMenu");
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#endif
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Pos = rectangle.UpperLeftCorner;
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recalculateSize();
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if (getFocus)
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Environment->setFocus(this);
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setNotClipped(true);
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}
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//! destructor
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CGUIContextMenu::~CGUIContextMenu()
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{
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for (u32 i=0; i<Items.size(); ++i)
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if (Items[i].SubMenu)
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Items[i].SubMenu->drop();
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if (LastFont)
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LastFont->drop();
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}
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//! Returns amount of menu items
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u32 CGUIContextMenu::getItemCount() const
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{
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return Items.size();
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}
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//! Adds a menu item.
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u32 CGUIContextMenu::addItem(const wchar_t* text, s32 id, bool enabled, bool hasSubMenu, bool checked)
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{
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SItem s;
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s.Enabled = enabled;
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s.Checked = checked;
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s.Text = text;
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s.IsSeparator = (text == 0);
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s.SubMenu = 0;
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s.CommandId = id;
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if (hasSubMenu)
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{
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s.SubMenu = new CGUIContextMenu(Environment, this, id,
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core::rect<s32>(0,0,100,100), false, false);
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s.SubMenu->setVisible(false);
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}
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Items.push_back(s);
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recalculateSize();
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return Items.size() - 1;
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}
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//! Adds a sub menu from an element that already exists.
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void CGUIContextMenu::setSubMenu(u32 index, CGUIContextMenu* menu)
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{
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if (index >= Items.size())
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return;
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if (Items[index].SubMenu)
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Items[index].SubMenu->drop();
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Items[index].SubMenu = menu;
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menu->setVisible(false);
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if (Items[index].SubMenu)
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{
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menu->grab();
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menu->AllowFocus = false;
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if ( Environment->getFocus() == menu )
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{
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Environment->setFocus( this );
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}
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}
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recalculateSize();
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}
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//! Adds a separator item to the menu
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void CGUIContextMenu::addSeparator()
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{
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addItem(0, -1, true, false, false);
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}
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//! Returns text of the menu item.
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const wchar_t* CGUIContextMenu::getItemText(u32 idx) const
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{
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if (idx >= Items.size())
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return 0;
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return Items[idx].Text.c_str();
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}
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//! Sets text of the menu item.
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void CGUIContextMenu::setItemText(u32 idx, const wchar_t* text)
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{
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if (idx >= Items.size())
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return;
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Items[idx].Text = text;
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recalculateSize();
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}
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//! Returns if a menu item is enabled
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bool CGUIContextMenu::isItemEnabled(u32 idx) const
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{
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if (idx >= Items.size())
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return false;
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}
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return Items[idx].Enabled;
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}
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//! Returns if a menu item is checked
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bool CGUIContextMenu::isItemChecked(u32 idx) const
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{
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if (idx >= Items.size())
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return false;
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}
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return Items[idx].Checked;
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}
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//! Sets if the menu item should be enabled.
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void CGUIContextMenu::setItemEnabled(u32 idx, bool enabled)
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{
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if (idx >= Items.size())
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return;
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Items[idx].Enabled = enabled;
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}
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//! Sets if the menu item should be checked.
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void CGUIContextMenu::setItemChecked(u32 idx, bool checked )
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{
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if (idx >= Items.size())
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return;
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Items[idx].Checked = checked;
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}
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//! Removes a menu item
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void CGUIContextMenu::removeItem(u32 idx)
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{
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if (idx >= Items.size())
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return;
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if (Items[idx].SubMenu)
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{
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Items[idx].SubMenu->drop();
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Items[idx].SubMenu = 0;
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}
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Items.erase(idx);
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recalculateSize();
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}
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//! Removes all menu items
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void CGUIContextMenu::removeAllItems()
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{
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for (u32 i=0; i<Items.size(); ++i)
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if (Items[i].SubMenu)
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Items[i].SubMenu->drop();
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Items.clear();
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recalculateSize();
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}
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//! called if an event happened.
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bool CGUIContextMenu::OnEvent(const SEvent& event)
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{
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if (IsEnabled)
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{
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switch(event.EventType)
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{
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case EET_GUI_EVENT:
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switch(event.GUIEvent.EventType)
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{
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case EGET_ELEMENT_FOCUS_LOST:
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if (event.GUIEvent.Caller == this && !isMyChild(event.GUIEvent.Element) && AllowFocus)
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{
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// set event parent of submenus
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setEventParent(Parent);
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remove();
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return false;
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}
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break;
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case EGET_ELEMENT_FOCUSED:
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if (event.GUIEvent.Caller == this && !AllowFocus)
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{
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return true;
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}
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break;
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default:
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break;
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}
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break;
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case EET_MOUSE_INPUT_EVENT:
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switch(event.MouseInput.Event)
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{
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case EMIE_LMOUSE_LEFT_UP:
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{
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// menu might be removed if it loses focus in sendClick, so grab a reference
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grab();
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const u32 t = sendClick(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y));
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if ((t==0 || t==1) && Environment->hasFocus(this))
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Environment->removeFocus(this);
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drop();
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}
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return true;
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case EMIE_LMOUSE_PRESSED_DOWN:
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return true;
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case EMIE_MOUSE_MOVED:
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if (Environment->hasFocus(this))
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highlight(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y), true);
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return true;
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default:
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break;
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}
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break;
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default:
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break;
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}
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}
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return IGUIElement::OnEvent(event);
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}
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//! Sets the visible state of this element.
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void CGUIContextMenu::setVisible(bool visible)
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{
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HighLighted = -1;
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ChangeTime = os::Timer::getTime();
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for (u32 j=0; j<Items.size(); ++j)
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if (Items[j].SubMenu)
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Items[j].SubMenu->setVisible(false);
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IGUIElement::setVisible(visible);
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}
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//! sends a click Returns:
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//! 0 if click went outside of the element,
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//! 1 if a valid button was clicked,
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//! 2 if a nonclickable element was clicked
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u32 CGUIContextMenu::sendClick(const core::position2d<s32>& p)
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{
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u32 t = 0;
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// get number of open submenu
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s32 openmenu = -1;
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s32 j;
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for (j=0; j<(s32)Items.size(); ++j)
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if (Items[j].SubMenu && Items[j].SubMenu->isVisible())
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{
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openmenu = j;
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break;
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}
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// delegate click operation to submenu
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if (openmenu != -1)
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{
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t = Items[j].SubMenu->sendClick(p);
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if (t != 0)
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return t; // clicked something
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}
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// check click on myself
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if (isPointInside(p) &&
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(u32)HighLighted < Items.size())
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{
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if (!Items[HighLighted].Enabled ||
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Items[HighLighted].IsSeparator ||
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Items[HighLighted].SubMenu)
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return 2;
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SEvent event;
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event.EventType = EET_GUI_EVENT;
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event.GUIEvent.Caller = this;
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event.GUIEvent.Element = 0;
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event.GUIEvent.EventType = EGET_MENU_ITEM_SELECTED;
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if (Parent)
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Parent->OnEvent(event);
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else
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if (EventParent)
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EventParent->OnEvent(event);
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return 1;
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}
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return 0;
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}
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//! returns true, if an element was highligted
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bool CGUIContextMenu::highlight(const core::position2d<s32>& p, bool canOpenSubMenu)
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{
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// get number of open submenu
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s32 openmenu = -1;
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s32 i;
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for (i=0; i<(s32)Items.size(); ++i)
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if (Items[i].SubMenu && Items[i].SubMenu->isVisible())
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{
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openmenu = i;
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break;
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}
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// delegate highlight operation to submenu
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if (openmenu != -1)
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{
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if (Items[openmenu].SubMenu->highlight(p, canOpenSubMenu))
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{
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HighLighted = openmenu;
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ChangeTime = os::Timer::getTime();
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return true;
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}
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}
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// highlight myself
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for (i=0; i<(s32)Items.size(); ++i)
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if (getHRect(Items[i], AbsoluteRect).isPointInside(p))
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{
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HighLighted = i;
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ChangeTime = os::Timer::getTime();
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// make submenus visible/invisible
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for (s32 j=0; j<(s32)Items.size(); ++j)
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if (Items[j].SubMenu)
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{
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if ( j == i && canOpenSubMenu && Items[j].Enabled )
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Items[j].SubMenu->setVisible(true);
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else if ( j != i )
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Items[j].SubMenu->setVisible(false);
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}
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return true;
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}
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HighLighted = openmenu;
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return false;
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}
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//! returns the item highlight-area
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core::rect<s32> CGUIContextMenu::getHRect(const SItem& i, const core::rect<s32>& absolute) const
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{
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core::rect<s32> r = absolute;
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r.UpperLeftCorner.Y += i.PosY;
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r.LowerRightCorner.Y = r.UpperLeftCorner.Y + i.Dim.Height;
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return r;
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}
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//! Gets drawing rect of Item
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core::rect<s32> CGUIContextMenu::getRect(const SItem& i, const core::rect<s32>& absolute) const
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{
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core::rect<s32> r = absolute;
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r.UpperLeftCorner.Y += i.PosY;
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r.LowerRightCorner.Y = r.UpperLeftCorner.Y + i.Dim.Height;
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r.UpperLeftCorner.X += 20;
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return r;
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}
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//! draws the element and its children
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void CGUIContextMenu::draw()
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{
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if (!IsVisible)
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return;
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IGUISkin* skin = Environment->getSkin();
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if (!skin)
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return;
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IGUIFont* font = skin->getFont(EGDF_MENU);
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if (font != LastFont)
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{
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if (LastFont)
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LastFont->drop();
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LastFont = font;
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if (LastFont)
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LastFont->grab();
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recalculateSize();
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}
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IGUISpriteBank* sprites = skin->getSpriteBank();
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core::rect<s32> rect = AbsoluteRect;
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core::rect<s32>* clip = 0;
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// draw frame
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skin->draw3DMenuPane(this, AbsoluteRect, clip);
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// loop through all menu items
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rect = AbsoluteRect;
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s32 y = AbsoluteRect.UpperLeftCorner.Y;
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for (s32 i=0; i<(s32)Items.size(); ++i)
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{
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if (Items[i].IsSeparator)
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{
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// draw separator
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rect = AbsoluteRect;
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rect.UpperLeftCorner.Y += Items[i].PosY + 3;
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rect.LowerRightCorner.Y = rect.UpperLeftCorner.Y + 1;
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rect.UpperLeftCorner.X += 5;
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rect.LowerRightCorner.X -= 5;
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skin->draw2DRectangle(this, skin->getColor(EGDC_3D_SHADOW), rect, clip);
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rect.LowerRightCorner.Y += 1;
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rect.UpperLeftCorner.Y += 1;
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skin->draw2DRectangle(this, skin->getColor(EGDC_3D_HIGH_LIGHT), rect, clip);
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y += 10;
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}
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else
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{
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rect = getRect(Items[i], AbsoluteRect);
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// draw highlighted
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if (i == HighLighted && Items[i].Enabled)
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{
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core::rect<s32> r = AbsoluteRect;
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r.LowerRightCorner.Y = rect.LowerRightCorner.Y;
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r.UpperLeftCorner.Y = rect.UpperLeftCorner.Y;
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r.LowerRightCorner.X -= 5;
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r.UpperLeftCorner.X += 5;
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skin->draw2DRectangle(this, skin->getColor(EGDC_HIGH_LIGHT), r, clip);
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}
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// draw text
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EGUI_DEFAULT_COLOR c = EGDC_BUTTON_TEXT;
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if (i == HighLighted)
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c = EGDC_HIGH_LIGHT_TEXT;
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if (!Items[i].Enabled)
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c = EGDC_GRAY_TEXT;
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if (font)
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font->draw(Items[i].Text.c_str(), rect,
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skin->getColor(c), false, true, clip);
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// draw submenu symbol
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if (Items[i].SubMenu && sprites)
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{
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core::rect<s32> r = rect;
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r.UpperLeftCorner.X = r.LowerRightCorner.X - 15;
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sprites->draw2DSprite(skin->getIcon(EGDI_CURSOR_RIGHT),
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r.getCenter(), clip, skin->getColor(c),
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(i == HighLighted) ? ChangeTime : 0,
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(i == HighLighted) ? os::Timer::getTime() : 0,
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(i == HighLighted), true);
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}
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// draw checked symbol
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if (Items[i].Checked && sprites)
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{
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core::rect<s32> r = rect;
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r.LowerRightCorner.X = r.UpperLeftCorner.X - 15;
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r.UpperLeftCorner.X = r.LowerRightCorner.X + 15;
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sprites->draw2DSprite(skin->getIcon(EGDI_CHECK_BOX_CHECKED),
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r.getCenter(), clip, skin->getColor(c),
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(i == HighLighted) ? ChangeTime : 0,
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(i == HighLighted) ? os::Timer::getTime() : 0,
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(i == HighLighted), true);
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}
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}
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}
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IGUIElement::draw();
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}
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void CGUIContextMenu::recalculateSize()
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{
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IGUIFont* font = Environment->getSkin()->getFont(EGDF_MENU);
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if (!font)
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return;
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core::rect<s32> rect;
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rect.UpperLeftCorner = RelativeRect.UpperLeftCorner;
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u32 width = 100;
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u32 height = 3;
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u32 i;
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for (i=0; i<Items.size(); ++i)
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{
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if (Items[i].IsSeparator)
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{
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Items[i].Dim.Width = 100;
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Items[i].Dim.Height = 10;
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}
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else
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{
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Items[i].Dim = font->getDimension(Items[i].Text.c_str());
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Items[i].Dim.Width += 40;
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if (Items[i].Dim.Width > width)
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width = Items[i].Dim.Width;
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}
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Items[i].PosY = height;
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height += Items[i].Dim.Height;
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}
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height += 5;
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if (height < 10)
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height = 10;
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rect.LowerRightCorner.X = RelativeRect.UpperLeftCorner.X + width;
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rect.LowerRightCorner.Y = RelativeRect.UpperLeftCorner.Y + height;
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setRelativePosition(rect);
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// recalculate submenus
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for (i=0; i<Items.size(); ++i)
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{
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if (Items[i].SubMenu)
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{
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// move submenu
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const s32 w = Items[i].SubMenu->getAbsolutePosition().getWidth();
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const s32 h = Items[i].SubMenu->getAbsolutePosition().getHeight();
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Items[i].SubMenu->setRelativePosition(
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core::rect<s32>(width-5, Items[i].PosY,
|
|
width+w-5, Items[i].PosY+h));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//! Returns the selected item in the menu
|
|
s32 CGUIContextMenu::getSelectedItem() const
|
|
{
|
|
return HighLighted;
|
|
}
|
|
|
|
|
|
//! \return Returns a pointer to the submenu of an item.
|
|
IGUIContextMenu* CGUIContextMenu::getSubMenu(u32 idx) const
|
|
{
|
|
if (idx >= Items.size())
|
|
return 0;
|
|
|
|
return Items[idx].SubMenu;
|
|
}
|
|
|
|
|
|
//! Returns command id of a menu item
|
|
s32 CGUIContextMenu::getItemCommandId(u32 idx) const
|
|
{
|
|
if (idx >= Items.size())
|
|
return -1;
|
|
|
|
return Items[idx].CommandId;
|
|
}
|
|
|
|
|
|
//! Sets the command id of a menu item
|
|
void CGUIContextMenu::setItemCommandId(u32 idx, s32 id)
|
|
{
|
|
if (idx >= Items.size())
|
|
return;
|
|
|
|
Items[idx].CommandId = id;
|
|
}
|
|
|
|
|
|
//! Writes attributes of the element.
|
|
void CGUIContextMenu::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
|
|
{
|
|
IGUIElement::serializeAttributes(out,options);
|
|
out->addPosition2d("Position", Pos);
|
|
|
|
if (Parent->getType() == EGUIET_CONTEXT_MENU || Parent->getType() == EGUIET_MENU )
|
|
{
|
|
const IGUIContextMenu* const ptr = (const IGUIContextMenu*)Parent;
|
|
// find the position of this item in its parent's list
|
|
u32 i;
|
|
// VC6 needs the cast for this
|
|
for (i=0; (i<ptr->getItemCount()) && (ptr->getSubMenu(i) != (const IGUIContextMenu*)this); ++i)
|
|
; // do nothing
|
|
|
|
out->addInt("ParentItem", i);
|
|
}
|
|
|
|
// write out the item list
|
|
out->addInt("ItemCount", Items.size());
|
|
|
|
core::stringc tmp;
|
|
|
|
for (u32 i=0; i < Items.size(); ++i)
|
|
{
|
|
tmp = "IsSeparator"; tmp += i;
|
|
out->addBool(tmp.c_str(), Items[i].IsSeparator);
|
|
|
|
if (!Items[i].IsSeparator)
|
|
{
|
|
tmp = "Text"; tmp += i;
|
|
out->addString(tmp.c_str(), Items[i].Text.c_str());
|
|
tmp = "CommandID"; tmp += i;
|
|
out->addInt(tmp.c_str(), Items[i].CommandId);
|
|
tmp = "Enabled"; tmp += i;
|
|
out->addBool(tmp.c_str(), Items[i].Enabled);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//! Reads attributes of the element
|
|
void CGUIContextMenu::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
|
|
{
|
|
IGUIElement::deserializeAttributes(in,options);
|
|
|
|
Pos = in->getAttributeAsPosition2d("Position");
|
|
|
|
// link to this item's parent
|
|
if (Parent && ( Parent->getType() == EGUIET_CONTEXT_MENU || Parent->getType() == EGUIET_MENU ) )
|
|
((CGUIContextMenu*)Parent)->setSubMenu(in->getAttributeAsInt("ParentItem"),this);
|
|
|
|
|
|
removeAllItems();
|
|
|
|
// read the item list
|
|
const s32 count = in->getAttributeAsInt("ItemCount");
|
|
|
|
for (s32 i=0; i<count; ++i)
|
|
{
|
|
core::stringc tmp;
|
|
core::stringw txt;
|
|
s32 commandid;
|
|
bool enabled;
|
|
bool checked;
|
|
|
|
tmp = "IsSeparator"; tmp += i;
|
|
if ( in->getAttributeAsBool(tmp.c_str()) )
|
|
addSeparator();
|
|
else
|
|
{
|
|
tmp = "Text"; tmp += i;
|
|
txt = in->getAttributeAsStringW(tmp.c_str());
|
|
|
|
tmp = "CommandID"; tmp += i;
|
|
commandid = in->getAttributeAsInt(tmp.c_str());
|
|
|
|
tmp = "Enabled"; tmp += i;
|
|
enabled = in->getAttributeAsBool(tmp.c_str());
|
|
|
|
tmp = "Checked"; tmp += i;
|
|
checked = in->getAttributeAsBool(tmp.c_str());
|
|
|
|
addItem(core::stringw(txt.c_str()).c_str(), commandid, enabled, false, checked);
|
|
}
|
|
}
|
|
|
|
recalculateSize();
|
|
}
|
|
|
|
|
|
// because sometimes the element has no parent at click time
|
|
void CGUIContextMenu::setEventParent(IGUIElement *parent)
|
|
{
|
|
EventParent = parent;
|
|
|
|
for (u32 i=0; i<Items.size(); ++i)
|
|
if (Items[i].SubMenu)
|
|
Items[i].SubMenu->setEventParent(parent);
|
|
}
|
|
|
|
|
|
bool CGUIContextMenu::hasOpenSubMenu() const
|
|
{
|
|
for (u32 i=0; i<Items.size(); ++i)
|
|
if (Items[i].SubMenu && Items[i].SubMenu->isVisible())
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
void CGUIContextMenu::closeAllSubMenus()
|
|
{
|
|
for (u32 i=0; i<Items.size(); ++i)
|
|
if (Items[i].SubMenu)
|
|
Items[i].SubMenu->setVisible(false);
|
|
|
|
//HighLighted = -1;
|
|
}
|
|
|
|
|
|
} // end namespace
|
|
} // end namespace
|
|
|
|
#endif // _IRR_COMPILE_WITH_GUI_
|
|
|