irrlicht/source/Irrlicht/CGUIMessageBox.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 "CGUIMessageBox.h"
#ifdef _IRR_COMPILE_WITH_GUI_
#include "IGUISkin.h"
#include "IGUIEnvironment.h"
#include "IGUIButton.h"
#include "IGUIFont.h"
#include "ITexture.h"
namespace irr
{
namespace gui
{
//! constructor
CGUIMessageBox::CGUIMessageBox(IGUIEnvironment* environment, const wchar_t* caption,
const wchar_t* text, s32 flags,
IGUIElement* parent, s32 id, core::rect<s32> rectangle, video::ITexture* image)
: CGUIWindow(environment, parent, id, rectangle),
OkButton(0), CancelButton(0), YesButton(0), NoButton(0), StaticText(0),
Icon(0), IconTexture(image),
Flags(flags), MessageText(text), Pressed(false)
{
#ifdef _DEBUG
setDebugName("CGUIMessageBox");
#endif
// set element type
Type = EGUIET_MESSAGE_BOX;
// remove focus
Environment->setFocus(0);
// remove buttons
getMaximizeButton()->remove();
getMinimizeButton()->remove();
if (caption)
setText(caption);
Environment->setFocus(this);
if ( IconTexture )
IconTexture->grab();
refreshControls();
}
//! destructor
CGUIMessageBox::~CGUIMessageBox()
{
if (StaticText)
StaticText->drop();
if (OkButton)
OkButton->drop();
if (CancelButton)
CancelButton->drop();
if (YesButton)
YesButton->drop();
if (NoButton)
NoButton->drop();
if (Icon)
Icon->drop();
if ( IconTexture )
IconTexture->drop();
}
void CGUIMessageBox::setButton(IGUIButton*& button, bool isAvailable, const core::rect<s32> & btnRect, const wchar_t * text, IGUIElement*& focusMe)
{
// add/remove ok button
if (isAvailable)
{
if (!button)
{
button = Environment->addButton(btnRect, this);
button->setSubElement(true);
button->grab();
}
else
button->setRelativePosition(btnRect);
button->setText(text);
focusMe = button;
}
else if (button)
{
button->drop();
button->remove();
button =0;
}
}
void CGUIMessageBox::refreshControls()
{
// Layout can be seen as 4 boxes (a layoutmanager would be nice)
// One box at top over the whole width for title
// Two boxes with same height at the middle beside each other for icon and for text
// One box at the bottom for the buttons
const IGUISkin* skin = Environment->getSkin();
const s32 buttonHeight = skin->getSize(EGDS_BUTTON_HEIGHT);
const s32 buttonWidth = skin->getSize(EGDS_BUTTON_WIDTH);
const s32 titleHeight = skin->getSize(EGDS_WINDOW_BUTTON_WIDTH)+2; // titlebar has no own constant
const s32 buttonDistance = skin->getSize(EGDS_WINDOW_BUTTON_WIDTH);
const s32 borderWidth = skin->getSize(EGDS_MESSAGE_BOX_GAP_SPACE);
// add the static text for the message
core::rect<s32> staticRect;
staticRect.UpperLeftCorner.X = borderWidth;
staticRect.UpperLeftCorner.Y = titleHeight + borderWidth;
staticRect.LowerRightCorner.X = staticRect.UpperLeftCorner.X + skin->getSize(EGDS_MESSAGE_BOX_MAX_TEXT_WIDTH);
staticRect.LowerRightCorner.Y = staticRect.UpperLeftCorner.Y + skin->getSize(EGDS_MESSAGE_BOX_MAX_TEXT_HEIGHT);
if (!StaticText)
{
StaticText = Environment->addStaticText(MessageText.c_str(), staticRect, false, false, this);
StaticText->setWordWrap(true);
StaticText->setSubElement(true);
StaticText->grab();
}
else
{
StaticText->setRelativePosition(staticRect);
StaticText->setText(MessageText.c_str());
}
s32 textHeight = StaticText->getTextHeight();
s32 textWidth = StaticText->getTextWidth() + 6; // +6 because the static itself needs that
const s32 iconHeight = IconTexture ? IconTexture->getOriginalSize().Height : 0;
if ( textWidth < skin->getSize(EGDS_MESSAGE_BOX_MIN_TEXT_WIDTH) )
textWidth = skin->getSize(EGDS_MESSAGE_BOX_MIN_TEXT_WIDTH) + 6;
// no neeed to check for max because it couldn't get larger due to statictextbox.
if ( textHeight < skin->getSize(EGDS_MESSAGE_BOX_MIN_TEXT_HEIGHT) )
textHeight = skin->getSize(EGDS_MESSAGE_BOX_MIN_TEXT_HEIGHT);
if ( textHeight > skin->getSize(EGDS_MESSAGE_BOX_MAX_TEXT_HEIGHT) )
textHeight = skin->getSize(EGDS_MESSAGE_BOX_MAX_TEXT_HEIGHT);
// content is text + icons + borders (but not titlebar)
s32 contentHeight = textHeight > iconHeight ? textHeight : iconHeight;
contentHeight += borderWidth;
s32 contentWidth = 0;
// add icon
if ( IconTexture )
{
core::position2d<s32> iconPos;
iconPos.Y = titleHeight + borderWidth;
if ( iconHeight < textHeight )
iconPos.Y += (textHeight-iconHeight) / 2;
iconPos.X = borderWidth;
if (!Icon)
{
Icon = Environment->addImage(IconTexture, iconPos, true, this);
Icon->setSubElement(true);
Icon->grab();
}
else
{
core::rect<s32> iconRect( iconPos.X, iconPos.Y, iconPos.X + IconTexture->getOriginalSize().Width, iconPos.Y + IconTexture->getOriginalSize().Height );
Icon->setRelativePosition(iconRect);
}
contentWidth += borderWidth + IconTexture->getOriginalSize().Width;
}
else if ( Icon )
{
Icon->drop();
Icon->remove();
Icon = 0;
}
// position text
core::rect<s32> textRect;
textRect.UpperLeftCorner.X = contentWidth + borderWidth;
textRect.UpperLeftCorner.Y = titleHeight + borderWidth;
if ( textHeight < iconHeight )
textRect.UpperLeftCorner.Y += (iconHeight-textHeight) / 2;
textRect.LowerRightCorner.X = textRect.UpperLeftCorner.X + textWidth;
textRect.LowerRightCorner.Y = textRect.UpperLeftCorner.Y + textHeight;
contentWidth += 2*borderWidth + textWidth;
StaticText->setRelativePosition( textRect );
// find out button size needs
s32 countButtons = 0;
if (Flags & EMBF_OK)
++countButtons;
if (Flags & EMBF_CANCEL)
++countButtons;
if (Flags & EMBF_YES)
++countButtons;
if (Flags & EMBF_NO)
++countButtons;
s32 buttonBoxWidth = countButtons * buttonWidth + 2 * borderWidth;
if ( countButtons > 1 )
buttonBoxWidth += (countButtons-1) * buttonDistance;
s32 buttonBoxHeight = buttonHeight + 2 * borderWidth;
// calc new message box sizes
core::rect<s32> tmp = getRelativePosition();
s32 msgBoxHeight = titleHeight + contentHeight + buttonBoxHeight;
s32 msgBoxWidth = contentWidth > buttonBoxWidth ? contentWidth : buttonBoxWidth;
// adjust message box position
tmp.UpperLeftCorner.Y = (Parent->getAbsolutePosition().getHeight() - msgBoxHeight) / 2;
tmp.LowerRightCorner.Y = tmp.UpperLeftCorner.Y + msgBoxHeight;
tmp.UpperLeftCorner.X = (Parent->getAbsolutePosition().getWidth() - msgBoxWidth) / 2;
tmp.LowerRightCorner.X = tmp.UpperLeftCorner.X + msgBoxWidth;
setRelativePosition(tmp);
// add buttons
core::rect<s32> btnRect;
btnRect.UpperLeftCorner.Y = titleHeight + contentHeight + borderWidth;
btnRect.LowerRightCorner.Y = btnRect.UpperLeftCorner.Y + buttonHeight;
btnRect.UpperLeftCorner.X = borderWidth;
if ( contentWidth > buttonBoxWidth )
btnRect.UpperLeftCorner.X += (contentWidth - buttonBoxWidth) / 2; // center buttons
btnRect.LowerRightCorner.X = btnRect.UpperLeftCorner.X + buttonWidth;
IGUIElement* focusMe = 0;
setButton(OkButton, (Flags & EMBF_OK) != 0, btnRect, skin->getDefaultText(EGDT_MSG_BOX_OK), focusMe);
if ( Flags & EMBF_OK )
btnRect += core::position2d<s32>(buttonWidth + buttonDistance, 0);
setButton(CancelButton, (Flags & EMBF_CANCEL) != 0, btnRect, skin->getDefaultText(EGDT_MSG_BOX_CANCEL), focusMe);
if ( Flags & EMBF_CANCEL )
btnRect += core::position2d<s32>(buttonWidth + buttonDistance, 0);
setButton(YesButton, (Flags & EMBF_YES) != 0, btnRect, skin->getDefaultText(EGDT_MSG_BOX_YES), focusMe);
if ( Flags & EMBF_YES )
btnRect += core::position2d<s32>(buttonWidth + buttonDistance, 0);
setButton(NoButton, (Flags & EMBF_NO) != 0, btnRect, skin->getDefaultText(EGDT_MSG_BOX_NO), focusMe);
if (Environment->hasFocus(this) && focusMe)
Environment->setFocus(focusMe);
}
//! called if an event happened.
bool CGUIMessageBox::OnEvent(const SEvent& event)
{
if (isEnabled())
{
SEvent outevent;
outevent.EventType = EET_GUI_EVENT;
outevent.GUIEvent.Caller = this;
outevent.GUIEvent.Element = 0;
switch(event.EventType)
{
case EET_KEY_INPUT_EVENT:
if (event.KeyInput.PressedDown)
{
switch (event.KeyInput.Key)
{
case KEY_RETURN:
if (OkButton)
{
OkButton->setPressed(true);
Pressed = true;
}
break;
case KEY_KEY_Y:
if (YesButton)
{
YesButton->setPressed(true);
Pressed = true;
}
break;
case KEY_KEY_N:
if (NoButton)
{
NoButton->setPressed(true);
Pressed = true;
}
break;
case KEY_ESCAPE:
if (Pressed)
{
// cancel press
if (OkButton) OkButton->setPressed(false);
if (YesButton) YesButton->setPressed(false);
if (NoButton) NoButton->setPressed(false);
Pressed = false;
}
else
if (CancelButton)
{
CancelButton->setPressed(true);
Pressed = true;
}
else
if (CloseButton && CloseButton->isVisible())
{
CloseButton->setPressed(true);
Pressed = true;
}
break;
default: // no other key is handled here
break;
}
}
else
if (Pressed)
{
if (OkButton && event.KeyInput.Key == KEY_RETURN)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_OK;
Parent->OnEvent(outevent);
remove();
return true;
}
else
if ((CancelButton || CloseButton) && event.KeyInput.Key == KEY_ESCAPE)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_CANCEL;
Parent->OnEvent(outevent);
remove();
return true;
}
else
if (YesButton && event.KeyInput.Key == KEY_KEY_Y)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_YES;
Parent->OnEvent(outevent);
remove();
return true;
}
else
if (NoButton && event.KeyInput.Key == KEY_KEY_N)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_NO;
Parent->OnEvent(outevent);
remove();
return true;
}
}
break;
case EET_GUI_EVENT:
if (event.GUIEvent.EventType == EGET_BUTTON_CLICKED)
{
if (event.GUIEvent.Caller == OkButton)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_OK;
Parent->OnEvent(outevent);
remove();
return true;
}
else
if (event.GUIEvent.Caller == CancelButton ||
event.GUIEvent.Caller == CloseButton)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_CANCEL;
Parent->OnEvent(outevent);
remove();
return true;
}
else
if (event.GUIEvent.Caller == YesButton)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_YES;
Parent->OnEvent(outevent);
remove();
return true;
}
else
if (event.GUIEvent.Caller == NoButton)
{
setVisible(false); // this is a workaround to make sure it's no longer the hovered element, crashes on pressing 1-2 times ESC
Environment->setFocus(0);
outevent.GUIEvent.EventType = EGET_MESSAGEBOX_NO;
Parent->OnEvent(outevent);
remove();
return true;
}
}
break;
default:
break;
}
}
return CGUIWindow::OnEvent(event);
}
//! Writes attributes of the element.
void CGUIMessageBox::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
{
CGUIWindow::serializeAttributes(out,options);
out->addBool ("OkayButton", (Flags & EMBF_OK) != 0 );
out->addBool ("CancelButton", (Flags & EMBF_CANCEL) != 0 );
out->addBool ("YesButton", (Flags & EMBF_YES) != 0 );
out->addBool ("NoButton", (Flags & EMBF_NO) != 0 );
out->addTexture ("Texture", IconTexture);
out->addString ("MessageText", MessageText.c_str());
}
//! Reads attributes of the element
void CGUIMessageBox::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
{
Flags = 0;
Flags = in->getAttributeAsBool("OkayButton") ? EMBF_OK : 0;
Flags |= in->getAttributeAsBool("CancelButton")? EMBF_CANCEL : 0;
Flags |= in->getAttributeAsBool("YesButton") ? EMBF_YES : 0;
Flags |= in->getAttributeAsBool("NoButton") ? EMBF_NO : 0;
if ( IconTexture )
{
IconTexture->drop();
IconTexture = NULL;
}
IconTexture = in->getAttributeAsTexture("Texture");
if ( IconTexture )
IconTexture->grab();
MessageText = in->getAttributeAsStringW("MessageText").c_str();
CGUIWindow::deserializeAttributes(in,options);
refreshControls();
}
} // end namespace gui
} // end namespace irr
#endif // _IRR_COMPILE_WITH_GUI_