irrlicht/tools/GUIEditor/CGUIPanel.cpp

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// Copyright 2006-2012 Asger Feldthaus
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
/*
Originally Klasker's but I've messed around with it lots - Gaz
*/
#include "CGUIPanel.h"
#include "IGUIEnvironment.h"
#include "IGUIScrollBar.h"
#include "IGUITabControl.h"
#include "IVideoDriver.h"
const int SCROLL_BAR_SIZE = 16; // Scroll bars are 16 pixels wide
const int BORDER_WIDTH = 2;
namespace irr
{
namespace gui
{
CGUIPanel::CGUIPanel(IGUIEnvironment* environment, IGUIElement* parent, s32 id, const core::rect<s32>& rectangle,
bool border, E_SCROLL_BAR_MODE vMode, E_SCROLL_BAR_MODE hMode)
: IGUIElement(EGUIET_ELEMENT, environment, parent, id, rectangle),
VScrollBar(0), HScrollBar(0), ClipPane(0), InnerPane(0),
VScrollBarMode(vMode), HScrollBarMode(hMode), NeedsUpdate(true), Border(border)
{
#ifdef _DEBUG
setDebugName("CGUIPanel");
#endif
s32 width = rectangle.getWidth();
s32 height = rectangle.getHeight();
core::rect<s32> rct = core::rect<s32>(width - SCROLL_BAR_SIZE,0, width, height);
VScrollBar = environment->addScrollBar(false, rct, 0, id);
VScrollBar->setSubElement(true);
VScrollBar->setTabStop(false);
VScrollBar->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
VScrollBar->grab();
IGUIElement::addChild(VScrollBar);
rct = core::rect<s32>(0, height - SCROLL_BAR_SIZE, width - SCROLL_BAR_SIZE,height );
HScrollBar = environment->addScrollBar(true, rct, 0, id);
HScrollBar->setSubElement(true);
HScrollBar->setTabStop(false);
HScrollBar->setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT);
HScrollBar->grab();
IGUIElement::addChild(HScrollBar);
rct = core::rect<s32>(0,0, width - SCROLL_BAR_SIZE, height - SCROLL_BAR_SIZE);
ClipPane = environment->addTab( rct, 0, -1);
ClipPane->setSubElement(true);
ClipPane->setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
ClipPane->grab();
IGUIElement::addChild(ClipPane);
InnerPane = environment->addTab(rct, ClipPane, -1);
InnerPane->setSubElement(true);
InnerPane->grab();
calculateClientArea();
resizeInnerPane();
}
CGUIPanel::~CGUIPanel()
{
// because the inner pane has the list of children, we need to remove the outer ones manually
IGUIElement::removeChild(VScrollBar);
IGUIElement::removeChild(HScrollBar);
IGUIElement::removeChild(ClipPane);
// now we can drop the others
VScrollBar->drop();
HScrollBar->drop();
ClipPane->drop();
InnerPane->drop();
}
void CGUIPanel::draw()
{
if (NeedsUpdate)
{
calculateClientArea();
resizeInnerPane();
NeedsUpdate = false;
}
IGUISkin* skin = Environment->getSkin();
if (Border && skin)
{
skin->draw3DSunkenPane( this, skin->getColor( EGDC_APP_WORKSPACE), false, true, AbsoluteRect, &AbsoluteClippingRect );
}
IGUIElement::draw();
}
void CGUIPanel::addChild(IGUIElement *child)
{
// add the child to the inner pane
InnerPane->addChild(child);
NeedsUpdate = true;
}
void CGUIPanel::removeChild(IGUIElement *child)
{
InnerPane->removeChild(child);
NeedsUpdate = true;
}
//! returns children of the inner pane
const core::list<IGUIElement*>& CGUIPanel::getChildren()
{
return InnerPane->getChildren();
}
bool CGUIPanel::hasBorder() const
{
return Border;
}
void CGUIPanel::setBorder( bool enabled )
{
Border = enabled;
}
IGUIScrollBar* CGUIPanel::getVScrollBar() const
{
return VScrollBar;
}
IGUIScrollBar* CGUIPanel::getHScrollBar() const
{
return HScrollBar;
}
E_SCROLL_BAR_MODE CGUIPanel::getVScrollBarMode() const
{
return VScrollBarMode;
}
void CGUIPanel::setVScrollBarMode( E_SCROLL_BAR_MODE mode )
{
VScrollBarMode = mode;
NeedsUpdate = true;
}
E_SCROLL_BAR_MODE CGUIPanel::getHScrollBarMode() const
{
return HScrollBarMode;
}
void CGUIPanel::setHScrollBarMode(E_SCROLL_BAR_MODE mode)
{
HScrollBarMode = mode;
NeedsUpdate = true;
}
bool CGUIPanel::OnEvent(const SEvent &event)
{
// Redirect mouse wheel to scrollbar
if (event.EventType == EET_MOUSE_INPUT_EVENT && event.MouseInput.Event == EMIE_MOUSE_WHEEL)
{
if (VScrollBar->isVisible())
{
Environment->setFocus(VScrollBar);
VScrollBar->OnEvent(event);
return true;
}
else if (VScrollBar->isVisible())
{
Environment->setFocus(HScrollBar);
HScrollBar->OnEvent(event);
return true;
}
}
else
{
if (event.EventType == EET_GUI_EVENT && event.GUIEvent.EventType == EGET_SCROLL_BAR_CHANGED &&
(event.GUIEvent.Caller == HScrollBar || event.GUIEvent.Caller == VScrollBar) )
{
moveInnerPane();
return true;
}
}
return IGUIElement::OnEvent(event);
}
void CGUIPanel::moveInnerPane()
{
core::dimension2d<s32> dim = InnerPane->getAbsolutePosition().getSize();
core::position2d<s32> newpos(HScrollBar->isVisible() ? -HScrollBar->getPos() : 0 , VScrollBar->isVisible() ? -VScrollBar->getPos() : 0);
core::rect<s32> r(newpos, newpos + dim);
InnerPane->setRelativePosition(r);
}
void CGUIPanel::updateAbsolutePosition()
{
IGUIElement::updateAbsolutePosition();
calculateClientArea();
resizeInnerPane();
}
void CGUIPanel::resizeInnerPane()
{
if (!HScrollBar || !VScrollBar || !InnerPane || !ClipPane)
return;
// get outer pane size
core::rect<s32> outerRect = ClipPane->getRelativePosition();
// resize flexible children depending on outer pane
InnerPane->setRelativePosition(outerRect);
// get desired size (total size of all children)
core::rect<s32> totalRect(0, 0, 0, 0);
core::list<IGUIElement*>::ConstIterator it;
for (it = InnerPane->getChildren().begin();
it != InnerPane->getChildren().end(); ++it)
{
core::rect<s32> rct = (*it)->getRelativePosition();
totalRect.addInternalPoint(rct.UpperLeftCorner);
totalRect.addInternalPoint(rct.LowerRightCorner);
}
// move children if pane needs to grow
core::position2di adjustedMovement(0,0);
if (totalRect.UpperLeftCorner.X < 0)
adjustedMovement.X = -totalRect.UpperLeftCorner.X;
if (totalRect.UpperLeftCorner.Y < 0)
adjustedMovement.Y = -totalRect.UpperLeftCorner.Y;
if (adjustedMovement.X > 0 || adjustedMovement.Y > 0)
{
totalRect += adjustedMovement;
for (it = InnerPane->getChildren().begin();
it != InnerPane->getChildren().end(); ++it )
{
(*it)->move(adjustedMovement);
}
}
// make sure the inner pane is at least as big as the outer
if (totalRect.getWidth() < outerRect.getWidth())
{
totalRect.UpperLeftCorner.X = 0;
totalRect.LowerRightCorner.X = outerRect.getWidth();
}
if (totalRect.getHeight() < outerRect.getHeight())
{
totalRect.UpperLeftCorner.Y = 0;
totalRect.LowerRightCorner.Y = outerRect.getHeight();
}
InnerPane->setRelativePosition(totalRect);
// scrollbars
if ( HScrollBarMode != ESBM_ALWAYS_INVISIBLE &&
(totalRect.getWidth() > outerRect.getWidth() || HScrollBarMode == ESBM_ALWAYS_VISIBLE) )
{
HScrollBar->setVisible(true);
HScrollBar->setMax(totalRect.getWidth() - outerRect.getWidth());
bringToFront(HScrollBar);
}
else
HScrollBar->setVisible(false);
if ( VScrollBarMode != ESBM_ALWAYS_INVISIBLE &&
(totalRect.getHeight() > outerRect.getHeight() || VScrollBarMode == ESBM_ALWAYS_VISIBLE) )
{
VScrollBar->setVisible(true);
VScrollBar->setMax(totalRect.getHeight() - outerRect.getHeight());
bringToFront(VScrollBar);
}
else
VScrollBar->setVisible(false);
// move to adjust for scrollbar pos
moveInnerPane();
}
void CGUIPanel::calculateClientArea()
{
core::rect<s32> ClientArea(0,0, AbsoluteRect.getWidth(),AbsoluteRect.getHeight());
if (VScrollBar->isVisible())
ClientArea.LowerRightCorner.X -= VScrollBar->getRelativePosition().getWidth();
if (HScrollBar->isVisible())
ClientArea.LowerRightCorner.Y -= HScrollBar->getRelativePosition().getHeight();
if (Border)
{
ClientArea.UpperLeftCorner += core::position2d<s32>( BORDER_WIDTH, BORDER_WIDTH );
ClientArea.LowerRightCorner -= core::position2d<s32>( BORDER_WIDTH, BORDER_WIDTH );
}
ClipPane->setRelativePosition(ClientArea);
}
core::rect<s32> CGUIPanel::getClientArea() const
{
return ClipPane->getRelativePosition();
}
void CGUIPanel::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options)
{
IGUIElement::serializeAttributes(out, options);
out->addBool("border", Border);
out->addEnum("horizontalScrollBar", HScrollBarMode, GUIScrollBarModeNames );
out->addEnum("verticalScrollBar", VScrollBarMode, GUIScrollBarModeNames );
}
void CGUIPanel::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options)
{
IGUIElement::deserializeAttributes(in, options);
setBorder(in->getAttributeAsBool("border"));
setHScrollBarMode((E_SCROLL_BAR_MODE)in->getAttributeAsEnumeration("horizontalScrollBar", GUIScrollBarModeNames));
setVScrollBarMode((E_SCROLL_BAR_MODE)in->getAttributeAsEnumeration("verticalScrollBar", GUIScrollBarModeNames));
}
} // namespace gui
} // namespace irr