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irrlicht/source/Irrlicht/CGUITabControl.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 "CGUITabControl.h"
#ifdef _IRR_COMPILE_WITH_GUI_
#include "CGUIButton.h"
#include "IGUISkin.h"
#include "IGUIEnvironment.h"
#include "IGUIFont.h"
#include "IVideoDriver.h"
#include "rect.h"
#include "os.h"
namespace irr
{
namespace gui
{
// ------------------------------------------------------------------
// Tab
// ------------------------------------------------------------------
//! constructor
CGUITab::CGUITab(IGUIEnvironment* environment,
IGUIElement* parent, const core::rect<s32>& rectangle,
s32 id)
: IGUITab(environment, parent, id, rectangle),
BackColor(0,0,0,0), OverrideTextColorEnabled(false), TextColor(255,0,0,0),
DrawBackground(false)
{
#ifdef _DEBUG
setDebugName("CGUITab");
#endif
const IGUISkin* const skin = environment->getSkin();
if (skin)
TextColor = skin->getColor(EGDC_BUTTON_TEXT);
}
//! draws the element and its children
void CGUITab::draw()
{
if (!IsVisible)
return;
IGUISkin *skin = Environment->getSkin();
if (skin && DrawBackground)
skin->draw2DRectangle(this, BackColor, AbsoluteRect, &AbsoluteClippingRect);
IGUIElement::draw();
}
//! sets if the tab should draw its background
void CGUITab::setDrawBackground(bool draw)
{
DrawBackground = draw;
}
//! sets the color of the background, if it should be drawn.
void CGUITab::setBackgroundColor(video::SColor c)
{
BackColor = c;
}
//! sets the color of the text
void CGUITab::setTextColor(video::SColor c)
{
OverrideTextColorEnabled = true;
TextColor = c;
}
video::SColor CGUITab::getTextColor() const
{
if ( OverrideTextColorEnabled )
return TextColor;
else
return Environment->getSkin()->getColor(EGDC_BUTTON_TEXT);
}
//! returns true if the tab is drawing its background, false if not
bool CGUITab::isDrawingBackground() const
{
return DrawBackground;
}
//! returns the color of the background
video::SColor CGUITab::getBackgroundColor() const
{
return BackColor;
}
// ------------------------------------------------------------------
// Tabcontrol
// ------------------------------------------------------------------
//! constructor
CGUITabControl::CGUITabControl(IGUIEnvironment* environment,
IGUIElement* parent, const core::rect<s32>& rectangle,
bool fillbackground, bool border, s32 id)
: IGUITabControl(environment, parent, id, rectangle), ActiveTabIndex(-1),
Border(border), FillBackground(fillbackground), ScrollControl(false), TabHeight(0), VerticalAlignment(EGUIA_UPPERLEFT),
UpButton(0), DownButton(0), TabMaxWidth(0), CurrentScrollTabIndex(0), TabExtraWidth(20)
{
#ifdef _DEBUG
setDebugName("CGUITabControl");
#endif
IGUISkin* skin = Environment->getSkin();
IGUISpriteBank* sprites = 0;
TabHeight = 32;
if (skin)
{
sprites = skin->getSpriteBank();
TabHeight = skin->getSize(gui::EGDS_BUTTON_HEIGHT) + 2;
}
UpButton = Environment->addButton(core::rect<s32>(0,0,10,10), this);
if (UpButton)
{
UpButton->setSpriteBank(sprites);
UpButton->setVisible(false);
UpButton->setSubElement(true);
UpButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_UPPERLEFT);
UpButton->setOverrideFont(Environment->getBuiltInFont());
UpButton->grab();
}
DownButton = Environment->addButton(core::rect<s32>(0,0,10,10), this);
if (DownButton)
{
DownButton->setSpriteBank(sprites);
DownButton->setVisible(false);
DownButton->setSubElement(true);
DownButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_UPPERLEFT);
DownButton->setOverrideFont(Environment->getBuiltInFont());
DownButton->grab();
}
setTabVerticalAlignment(EGUIA_UPPERLEFT);
refreshSprites();
}
//! destructor
CGUITabControl::~CGUITabControl()
{
for (u32 i=0; i<Tabs.size(); ++i)
{
if (Tabs[i])
Tabs[i]->drop();
}
if (UpButton)
UpButton->drop();
if (DownButton)
DownButton->drop();
}
void CGUITabControl::refreshSprites()
{
video::SColor color(255,255,255,255);
IGUISkin* skin = Environment->getSkin();
if (skin)
{
color = skin->getColor(isEnabled() ? EGDC_WINDOW_SYMBOL : EGDC_GRAY_WINDOW_SYMBOL);
if (UpButton)
{
UpButton->setSprite(EGBS_BUTTON_UP, skin->getIcon(EGDI_CURSOR_LEFT), color);
UpButton->setSprite(EGBS_BUTTON_DOWN, skin->getIcon(EGDI_CURSOR_LEFT), color);
}
if (DownButton)
{
DownButton->setSprite(EGBS_BUTTON_UP, skin->getIcon(EGDI_CURSOR_RIGHT), color);
DownButton->setSprite(EGBS_BUTTON_DOWN, skin->getIcon(EGDI_CURSOR_RIGHT), color);
}
}
}
//! Adds a tab
IGUITab* CGUITabControl::addTab(const wchar_t* caption, s32 id)
{
CGUITab* tab = new CGUITab(Environment, this, calcTabPos(), id);
tab->setText(caption);
tab->setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
tab->setVisible(false);
Tabs.push_back(tab); // no grab as new already creates a reference
if (ActiveTabIndex == -1)
{
ActiveTabIndex = Tabs.size()-1;
tab->setVisible(true);
}
recalculateScrollBar();
return tab;
}
//! adds a tab which has been created elsewhere
s32 CGUITabControl::addTab(IGUITab* tab)
{
return insertTab( Tabs.size(), tab, false);
}
//! Insert the tab at the given index
IGUITab* CGUITabControl::insertTab(s32 idx, const wchar_t* caption, s32 id)
{
if ( idx < 0 || idx > (s32)Tabs.size() ) // idx == Tabs.size() is indeed OK here as core::array can handle that
return NULL;
CGUITab* tab = new CGUITab(Environment, this, calcTabPos(), id);
tab->setText(caption);
tab->setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
tab->setVisible(false);
Tabs.insert(tab, (u32)idx);
if (ActiveTabIndex == -1)
{
ActiveTabIndex = (u32)idx;
tab->setVisible(true);
}
else if ( idx <= ActiveTabIndex )
{
++ActiveTabIndex;
setVisibleTab(ActiveTabIndex);
}
recalculateScrollBar();
return tab;
}
s32 CGUITabControl::insertTab(s32 idx, IGUITab* tab, bool serializationMode)
{
if (!tab)
return -1;
if ( idx > (s32)Tabs.size() && !serializationMode ) // idx == Tabs.size() is indeed OK here as core::array can handle that
return -1;
// Not allowing to add same tab twice as it would make things complicated (serialization or setting active visible)
if ( getTabIndex(tab) >= 0 )
return -1;
if ( idx < 0 )
idx = (s32)Tabs.size();
if ( tab->getParent() != this )
this->addChildToEnd(tab);
tab->setVisible(false);
tab->grab();
if ( serializationMode)
{
while ( idx >= (s32)Tabs.size() )
{
Tabs.push_back(0);
}
Tabs[idx] = tab;
if ( idx == ActiveTabIndex) // in serialization that can happen for any index
{
setVisibleTab(ActiveTabIndex);
tab->setVisible(true);
}
}
else
{
Tabs.insert(tab, (u32)idx);
if (ActiveTabIndex == -1)
{
ActiveTabIndex = idx;
setVisibleTab(ActiveTabIndex);
}
else if ( idx <= ActiveTabIndex)
{
++ActiveTabIndex;
setVisibleTab(ActiveTabIndex);
}
}
recalculateScrollBar();
return idx;
}
//! Removes a child.
void CGUITabControl::removeChild(IGUIElement* child)
{
s32 idx = getTabIndex(child);
if ( idx >= 0 )
removeTabButNotChild(idx);
// remove real element
IGUIElement::removeChild(child);
recalculateScrollBar();
}
//! Removes a tab from the tabcontrol
void CGUITabControl::removeTab(s32 idx)
{
if ( idx < 0 || idx >= (s32)Tabs.size() )
return;
removeChild(Tabs[(u32)idx]);
}
void CGUITabControl::removeTabButNotChild(s32 idx)
{
if ( idx < 0 || idx >= (s32)Tabs.size() )
return;
Tabs[(u32)idx]->drop();
Tabs.erase((u32)idx);
if ( idx < ActiveTabIndex )
{
--ActiveTabIndex;
setVisibleTab(ActiveTabIndex);
}
else if ( idx == ActiveTabIndex )
{
if ( (u32)idx == Tabs.size() )
--ActiveTabIndex;
setVisibleTab(ActiveTabIndex);
}
}
//! Clears the tabcontrol removing all tabs
void CGUITabControl::clear()
{
for (u32 i=0; i<Tabs.size(); ++i)
{
if (Tabs[i])
{
IGUIElement::removeChild(Tabs[i]);
Tabs[i]->drop();
}
}
Tabs.clear();
recalculateScrollBar();
}
//! Returns amount of tabs in the tabcontrol
s32 CGUITabControl::getTabCount() const
{
return Tabs.size();
}
//! Returns a tab based on zero based index
IGUITab* CGUITabControl::getTab(s32 idx) const
{
if (idx < 0 || (u32)idx >= Tabs.size())
return 0;
return Tabs[idx];
}
//! called if an event happened.
bool CGUITabControl::OnEvent(const SEvent& event)
{
if (isEnabled())
{
switch(event.EventType)
{
case EET_GUI_EVENT:
switch(event.GUIEvent.EventType)
{
case EGET_BUTTON_CLICKED:
if (event.GUIEvent.Caller == UpButton)
{
scrollLeft();
return true;
}
else if (event.GUIEvent.Caller == DownButton)
{
scrollRight();
return true;
}
break;
default:
break;
}
break;
case EET_MOUSE_INPUT_EVENT:
switch(event.MouseInput.Event)
{
//case EMIE_LMOUSE_PRESSED_DOWN:
// // todo: dragging tabs around
// return true;
case EMIE_LMOUSE_LEFT_UP:
{
s32 idx = getTabAt(event.MouseInput.X, event.MouseInput.Y);
if ( idx >= 0 )
{
setActiveTab(idx);
return true;
}
break;
}
default:
break;
}
break;
default:
break;
}
}
return IGUIElement::OnEvent(event);
}
void CGUITabControl::scrollLeft()
{
if ( CurrentScrollTabIndex > 0 )
--CurrentScrollTabIndex;
recalculateScrollBar();
}
void CGUITabControl::scrollRight()
{
if ( CurrentScrollTabIndex < (s32)(Tabs.size()) - 1 )
{
if ( needScrollControl(CurrentScrollTabIndex, true) )
++CurrentScrollTabIndex;
}
recalculateScrollBar();
}
s32 CGUITabControl::calcTabWidth(s32 pos, IGUIFont* font, const wchar_t* text, bool withScrollControl) const
{
if ( !font )
return 0;
s32 len = font->getDimension(text).Width + TabExtraWidth;
if ( TabMaxWidth > 0 && len > TabMaxWidth )
len = TabMaxWidth;
// check if we miss the place to draw the tab-button
if ( withScrollControl && ScrollControl && pos+len > UpButton->getAbsolutePosition().UpperLeftCorner.X - 2 )
{
s32 tabMinWidth = font->getDimension(L"A").Width;
if ( TabExtraWidth > 0 && TabExtraWidth > tabMinWidth )
tabMinWidth = TabExtraWidth;
if ( ScrollControl && pos+tabMinWidth <= UpButton->getAbsolutePosition().UpperLeftCorner.X - 2 )
{
len = UpButton->getAbsolutePosition().UpperLeftCorner.X - 2 - pos;
}
}
return len;
}
bool CGUITabControl::needScrollControl(s32 startIndex, bool withScrollControl)
{
if ( startIndex >= (s32)Tabs.size() )
startIndex -= 1;
if ( startIndex < 0 )
startIndex = 0;
IGUISkin* skin = Environment->getSkin();
if (!skin)
return false;
IGUIFont* font = skin->getFont();
core::rect<s32> frameRect(AbsoluteRect);
if (Tabs.empty())
return false;
if (!font)
return false;
s32 pos = frameRect.UpperLeftCorner.X + 2;
for (s32 i=startIndex; i<(s32)Tabs.size(); ++i)
{
// get Text
const wchar_t* text = 0;
if (Tabs[i])
{
text = Tabs[i]->getText();
// get text length
s32 len = calcTabWidth(pos, font, text, false); // always without withScrollControl here or len would be shortened
frameRect.LowerRightCorner.X += len;
frameRect.UpperLeftCorner.X = pos;
frameRect.LowerRightCorner.X = frameRect.UpperLeftCorner.X + len;
pos += len;
}
if ( withScrollControl && pos > UpButton->getAbsolutePosition().UpperLeftCorner.X - 2)
return true;
if ( !withScrollControl && pos > AbsoluteRect.LowerRightCorner.X )
return true;
}
return false;
}
core::rect<s32> CGUITabControl::calcTabPos()
{
core::rect<s32> r;
r.UpperLeftCorner.X = 0;
r.LowerRightCorner.X = AbsoluteRect.getWidth();
if ( Border )
{
++r.UpperLeftCorner.X;
--r.LowerRightCorner.X;
}
if ( VerticalAlignment == EGUIA_UPPERLEFT )
{
r.UpperLeftCorner.Y = TabHeight+2;
r.LowerRightCorner.Y = AbsoluteRect.getHeight()-1;
if ( Border )
{
--r.LowerRightCorner.Y;
}
}
else
{
r.UpperLeftCorner.Y = 0;
r.LowerRightCorner.Y = AbsoluteRect.getHeight()-(TabHeight+2);
if ( Border )
{
++r.UpperLeftCorner.Y;
}
}
return r;
}
//! draws the element and its children
void CGUITabControl::draw()
{
if (!IsVisible)
return;
IGUISkin* skin = Environment->getSkin();
if (!skin)
return;
IGUIFont* font = skin->getFont();
video::IVideoDriver* driver = Environment->getVideoDriver();
core::rect<s32> frameRect(AbsoluteRect);
// some empty background as placeholder when there are no tabs
if (Tabs.empty())
driver->draw2DRectangle(skin->getColor(EGDC_3D_HIGH_LIGHT), frameRect, &AbsoluteClippingRect);
if (!font)
return;
// tab button bar can be above or below the tabs
if ( VerticalAlignment == EGUIA_UPPERLEFT )
{
frameRect.UpperLeftCorner.Y += 2;
frameRect.LowerRightCorner.Y = frameRect.UpperLeftCorner.Y + TabHeight;
}
else
{
frameRect.UpperLeftCorner.Y = frameRect.LowerRightCorner.Y - TabHeight - 1;
frameRect.LowerRightCorner.Y -= 2;
}
core::rect<s32> tr;
s32 pos = frameRect.UpperLeftCorner.X + 2;
bool needLeftScroll = CurrentScrollTabIndex > 0;
bool needRightScroll = false;
// left and right pos of the active tab
s32 left = 0;
s32 right = 0;
//const wchar_t* activetext = 0;
IGUITab *activeTab = 0;
// Draw all tab-buttons except the active one
for (u32 i=CurrentScrollTabIndex; i<Tabs.size(); ++i)
{
// get Text
const wchar_t* text = 0;
if (Tabs[i])
text = Tabs[i]->getText();
// get text length
s32 len = calcTabWidth(pos, font, text, true);
if ( ScrollControl && pos+len > UpButton->getAbsolutePosition().UpperLeftCorner.X - 2 )
{
needRightScroll = true;
break;
}
frameRect.LowerRightCorner.X += len;
frameRect.UpperLeftCorner.X = pos;
frameRect.LowerRightCorner.X = frameRect.UpperLeftCorner.X + len;
pos += len;
if ((s32)i == ActiveTabIndex)
{
// for active button just remember values
left = frameRect.UpperLeftCorner.X;
right = frameRect.LowerRightCorner.X;
//activetext = text;
activeTab = Tabs[i];
}
else
{
skin->draw3DTabButton(this, false, frameRect, &AbsoluteClippingRect, VerticalAlignment);
// draw text
core::rect<s32> textClipRect(frameRect); // TODO: exact size depends on borders in draw3DTabButton which we don't get with current interface
textClipRect.clipAgainst(AbsoluteClippingRect);
font->draw(text, frameRect, Tabs[i]->getTextColor(),
true, true, &textClipRect);
}
}
// Draw active tab button
// Drawn later than other buttons because it draw over the buttons before/after it.
if (left != 0 && right != 0 && activeTab != 0)
{
// draw upper highlight frame
if ( VerticalAlignment == EGUIA_UPPERLEFT )
{
frameRect.UpperLeftCorner.X = left-2;
frameRect.LowerRightCorner.X = right+2;
frameRect.UpperLeftCorner.Y -= 2;
skin->draw3DTabButton(this, true, frameRect, &AbsoluteClippingRect, VerticalAlignment);
// draw text
core::rect<s32> textClipRect(frameRect); // TODO: exact size depends on borders in draw3DTabButton which we don't get with current interface
textClipRect.clipAgainst(AbsoluteClippingRect);
font->draw(activeTab->getText(), frameRect, activeTab->getTextColor(),
true, true, &textClipRect);
tr.UpperLeftCorner.X = AbsoluteRect.UpperLeftCorner.X;
tr.LowerRightCorner.X = left - 1;
tr.UpperLeftCorner.Y = frameRect.LowerRightCorner.Y - 1;
tr.LowerRightCorner.Y = frameRect.LowerRightCorner.Y;
driver->draw2DRectangle(skin->getColor(EGDC_3D_HIGH_LIGHT), tr, &AbsoluteClippingRect);
tr.UpperLeftCorner.X = right;
tr.LowerRightCorner.X = AbsoluteRect.LowerRightCorner.X;
driver->draw2DRectangle(skin->getColor(EGDC_3D_HIGH_LIGHT), tr, &AbsoluteClippingRect);
}
else
{
frameRect.UpperLeftCorner.X = left-2;
frameRect.LowerRightCorner.X = right+2;
frameRect.LowerRightCorner.Y += 2;
skin->draw3DTabButton(this, true, frameRect, &AbsoluteClippingRect, VerticalAlignment);
// draw text
font->draw(activeTab->getText(), frameRect, activeTab->getTextColor(),
true, true, &frameRect);
tr.UpperLeftCorner.X = AbsoluteRect.UpperLeftCorner.X;
tr.LowerRightCorner.X = left - 1;
tr.UpperLeftCorner.Y = frameRect.UpperLeftCorner.Y - 1;
tr.LowerRightCorner.Y = frameRect.UpperLeftCorner.Y;
driver->draw2DRectangle(skin->getColor(EGDC_3D_DARK_SHADOW), tr, &AbsoluteClippingRect);
tr.UpperLeftCorner.X = right;
tr.LowerRightCorner.X = AbsoluteRect.LowerRightCorner.X;
driver->draw2DRectangle(skin->getColor(EGDC_3D_DARK_SHADOW), tr, &AbsoluteClippingRect);
}
}
else
{
// No active tab
// Draw a line separating button bar from tab area
tr.UpperLeftCorner.X = AbsoluteRect.UpperLeftCorner.X;
tr.LowerRightCorner.X = AbsoluteRect.LowerRightCorner.X;
tr.UpperLeftCorner.Y = frameRect.LowerRightCorner.Y - 1;
tr.LowerRightCorner.Y = frameRect.LowerRightCorner.Y;
if ( VerticalAlignment == EGUIA_UPPERLEFT )
{
driver->draw2DRectangle(skin->getColor(EGDC_3D_HIGH_LIGHT), tr, &AbsoluteClippingRect);
}
else
{
tr.UpperLeftCorner.Y = frameRect.UpperLeftCorner.Y - 1;
tr.LowerRightCorner.Y = frameRect.UpperLeftCorner.Y;
driver->draw2DRectangle(skin->getColor(EGDC_3D_DARK_SHADOW), tr, &AbsoluteClippingRect);
}
}
// drawing some border and background for the tab-area.
skin->draw3DTabBody(this, Border, FillBackground, AbsoluteRect, &AbsoluteClippingRect, TabHeight, VerticalAlignment);
// enable scrollcontrols on need
if ( UpButton )
UpButton->setEnabled(needLeftScroll);
if ( DownButton )
DownButton->setEnabled(needRightScroll);
refreshSprites();
IGUIElement::draw();
}
//! Set the height of the tabs
void CGUITabControl::setTabHeight( s32 height )
{
if ( height < 0 )
height = 0;
TabHeight = height;
recalculateScrollButtonPlacement();
recalculateScrollBar();
}
//! Get the height of the tabs
s32 CGUITabControl::getTabHeight() const
{
return TabHeight;
}
//! set the maximal width of a tab. Per default width is 0 which means "no width restriction".
void CGUITabControl::setTabMaxWidth(s32 width )
{
TabMaxWidth = width;
}
//! get the maximal width of a tab
s32 CGUITabControl::getTabMaxWidth() const
{
return TabMaxWidth;
}
//! Set the extra width added to tabs on each side of the text
void CGUITabControl::setTabExtraWidth( s32 extraWidth )
{
if ( extraWidth < 0 )
extraWidth = 0;
TabExtraWidth = extraWidth;
recalculateScrollBar();
}
//! Get the extra width added to tabs on each side of the text
s32 CGUITabControl::getTabExtraWidth() const
{
return TabExtraWidth;
}
void CGUITabControl::recalculateScrollBar()
{
if (!UpButton || !DownButton)
return;
ScrollControl = needScrollControl() || CurrentScrollTabIndex > 0;
if (ScrollControl)
{
UpButton->setVisible( true );
DownButton->setVisible( true );
}
else
{
UpButton->setVisible( false );
DownButton->setVisible( false );
}
bringToFront( UpButton );
bringToFront( DownButton );
}
//! Set the alignment of the tabs
void CGUITabControl::setTabVerticalAlignment( EGUI_ALIGNMENT alignment )
{
VerticalAlignment = alignment;
recalculateScrollButtonPlacement();
recalculateScrollBar();
core::rect<s32> r(calcTabPos());
for ( u32 i=0; i<Tabs.size(); ++i )
{
Tabs[i]->setRelativePosition(r);
}
}
void CGUITabControl::recalculateScrollButtonPlacement()
{
IGUISkin* skin = Environment->getSkin();
s32 ButtonSize = 16;
s32 ButtonHeight = TabHeight - 2;
if ( ButtonHeight < 0 )
ButtonHeight = TabHeight;
if (skin)
{
ButtonSize = skin->getSize(EGDS_WINDOW_BUTTON_WIDTH);
if (ButtonSize > TabHeight)
ButtonSize = TabHeight;
}
s32 ButtonX = RelativeRect.getWidth() - (s32)(2.5f*(f32)ButtonSize) - 1;
s32 ButtonY = 0;
if (VerticalAlignment == EGUIA_UPPERLEFT)
{
ButtonY = 2 + (TabHeight / 2) - (ButtonHeight / 2);
UpButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_UPPERLEFT);
DownButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_UPPERLEFT);
}
else
{
ButtonY = RelativeRect.getHeight() - (TabHeight / 2) - (ButtonHeight / 2) - 2;
UpButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT);
DownButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT);
}
UpButton->setRelativePosition(core::rect<s32>(ButtonX, ButtonY, ButtonX+ButtonSize, ButtonY+ButtonHeight));
ButtonX += ButtonSize + 1;
DownButton->setRelativePosition(core::rect<s32>(ButtonX, ButtonY, ButtonX+ButtonSize, ButtonY+ButtonHeight));
}
//! Get the alignment of the tabs
EGUI_ALIGNMENT CGUITabControl::getTabVerticalAlignment() const
{
return VerticalAlignment;
}
s32 CGUITabControl::getTabAt(s32 xpos, s32 ypos) const
{
core::position2di p(xpos, ypos);
IGUISkin* skin = Environment->getSkin();
IGUIFont* font = skin->getFont();
core::rect<s32> frameRect(AbsoluteRect);
if ( VerticalAlignment == EGUIA_UPPERLEFT )
{
frameRect.UpperLeftCorner.Y += 2;
frameRect.LowerRightCorner.Y = frameRect.UpperLeftCorner.Y + TabHeight;
}
else
{
frameRect.UpperLeftCorner.Y = frameRect.LowerRightCorner.Y - TabHeight;
}
s32 pos = frameRect.UpperLeftCorner.X + 2;
if (!frameRect.isPointInside(p))
return -1;
for (s32 i=CurrentScrollTabIndex; i<(s32)Tabs.size(); ++i)
{
// get Text
const wchar_t* text = 0;
if (Tabs[i])
text = Tabs[i]->getText();
// get text length
s32 len = calcTabWidth(pos, font, text, true);
if ( ScrollControl && pos+len > UpButton->getAbsolutePosition().UpperLeftCorner.X - 2 )
return -1;
frameRect.UpperLeftCorner.X = pos;
frameRect.LowerRightCorner.X = frameRect.UpperLeftCorner.X + len;
pos += len;
if (frameRect.isPointInside(p))
{
return i;
}
}
return -1;
}
//! Returns which tab is currently active
s32 CGUITabControl::getActiveTab() const
{
return ActiveTabIndex;
}
//! Brings a tab to front.
bool CGUITabControl::setActiveTab(s32 idx)
{
if ((u32)idx >= Tabs.size())
return false;
bool changed = (ActiveTabIndex != idx);
ActiveTabIndex = idx;
setVisibleTab(ActiveTabIndex);
if (changed && Parent)
{
SEvent event;
event.EventType = EET_GUI_EVENT;
event.GUIEvent.Caller = this;
event.GUIEvent.Element = 0;
event.GUIEvent.EventType = EGET_TAB_CHANGED;
Parent->OnEvent(event);
}
return true;
}
void CGUITabControl::setVisibleTab(s32 idx)
{
for (u32 i=0; i<Tabs.size(); ++i)
if (Tabs[i])
Tabs[i]->setVisible( (s32)i == idx );
}
bool CGUITabControl::setActiveTab(IGUITab *tab)
{
return setActiveTab(getTabIndex(tab));
}
s32 CGUITabControl::getTabIndex(const IGUIElement *tab) const
{
for (u32 i=0; i<Tabs.size(); ++i)
if (Tabs[i] == tab)
return (s32)i;
return -1;
}
//! Update the position of the element, decides scroll button status
void CGUITabControl::updateAbsolutePosition()
{
IGUIElement::updateAbsolutePosition();
recalculateScrollBar();
}
} // end namespace irr
} // end namespace gui
#endif // _IRR_COMPILE_WITH_GUI_
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