2012-10-31 22:00:02 -04:00
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// Copyright (C) 2002-2012 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 "CGUIButton.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 "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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CGUIButton::CGUIButton(IGUIEnvironment* environment, IGUIElement* parent,
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s32 id, core::rect<s32> rectangle, bool noclip)
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: IGUIButton(environment, parent, id, rectangle),
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SpriteBank(0), OverrideFont(0), Image(0), PressedImage(0),
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ClickTime(0), HoverTime(0), FocusTime(0),
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IsPushButton(false), Pressed(false),
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UseAlphaChannel(false), DrawBorder(true), ScaleImage(false)
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{
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#ifdef _DEBUG
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setDebugName("CGUIButton");
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#endif
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setNotClipped(noclip);
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// Initialize the sprites.
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for (u32 i=0; i<EGBS_COUNT; ++i)
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ButtonSprites[i].Index = -1;
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// This element can be tabbed.
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setTabStop(true);
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setTabOrder(-1);
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}
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//! destructor
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CGUIButton::~CGUIButton()
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{
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if (OverrideFont)
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OverrideFont->drop();
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if (Image)
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Image->drop();
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if (PressedImage)
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PressedImage->drop();
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if (SpriteBank)
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SpriteBank->drop();
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}
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//! Sets if the images should be scaled to fit the button
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void CGUIButton::setScaleImage(bool scaleImage)
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{
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ScaleImage = scaleImage;
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}
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//! Returns whether the button scale the used images
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bool CGUIButton::isScalingImage() const
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return ScaleImage;
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}
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//! Sets if the button should use the skin to draw its border
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void CGUIButton::setDrawBorder(bool border)
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{
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DrawBorder = border;
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}
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void CGUIButton::setSpriteBank(IGUISpriteBank* sprites)
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{
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if (sprites)
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sprites->grab();
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if (SpriteBank)
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SpriteBank->drop();
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SpriteBank = sprites;
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}
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void CGUIButton::setSprite(EGUI_BUTTON_STATE state, s32 index, video::SColor color, bool loop)
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{
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if (SpriteBank)
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{
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ButtonSprites[(u32)state].Index = index;
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ButtonSprites[(u32)state].Color = color;
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ButtonSprites[(u32)state].Loop = loop;
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}
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else
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{
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ButtonSprites[(u32)state].Index = -1;
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}
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}
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//! called if an event happened.
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bool CGUIButton::OnEvent(const SEvent& event)
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{
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if (!isEnabled())
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return IGUIElement::OnEvent(event);
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switch(event.EventType)
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{
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case EET_KEY_INPUT_EVENT:
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if (event.KeyInput.PressedDown &&
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(event.KeyInput.Key == KEY_RETURN || event.KeyInput.Key == KEY_SPACE))
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{
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if (!IsPushButton)
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setPressed(true);
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else
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setPressed(!Pressed);
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return true;
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}
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if (Pressed && !IsPushButton && event.KeyInput.PressedDown && event.KeyInput.Key == KEY_ESCAPE)
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{
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setPressed(false);
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return true;
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}
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else
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if (!event.KeyInput.PressedDown && Pressed &&
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(event.KeyInput.Key == KEY_RETURN || event.KeyInput.Key == KEY_SPACE))
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{
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if (!IsPushButton)
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setPressed(false);
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if (Parent)
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{
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SEvent newEvent;
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newEvent.EventType = EET_GUI_EVENT;
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newEvent.GUIEvent.Caller = this;
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newEvent.GUIEvent.Element = 0;
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newEvent.GUIEvent.EventType = EGET_BUTTON_CLICKED;
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Parent->OnEvent(newEvent);
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}
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return true;
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}
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break;
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case EET_GUI_EVENT:
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if (event.GUIEvent.Caller == this)
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{
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if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
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{
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if (!IsPushButton)
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setPressed(false);
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FocusTime = os::Timer::getTime();
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}
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else if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUSED)
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{
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FocusTime = os::Timer::getTime();
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}
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else if (event.GUIEvent.EventType == EGET_ELEMENT_HOVERED || event.GUIEvent.EventType == EGET_ELEMENT_LEFT)
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{
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HoverTime = os::Timer::getTime();
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}
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}
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break;
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case EET_MOUSE_INPUT_EVENT:
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if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
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{
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if (Environment->hasFocus(this) &&
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!AbsoluteClippingRect.isPointInside(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y)))
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{
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Environment->removeFocus(this);
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return false;
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}
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if (!IsPushButton)
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setPressed(true);
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Environment->setFocus(this);
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return true;
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}
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else
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if (event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP)
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{
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bool wasPressed = Pressed;
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if ( !AbsoluteClippingRect.isPointInside( core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y ) ) )
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{
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if (!IsPushButton)
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setPressed(false);
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return true;
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}
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if (!IsPushButton)
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setPressed(false);
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else
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{
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setPressed(!Pressed);
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}
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if ((!IsPushButton && wasPressed && Parent) ||
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(IsPushButton && wasPressed != Pressed))
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{
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SEvent newEvent;
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newEvent.EventType = EET_GUI_EVENT;
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newEvent.GUIEvent.Caller = this;
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newEvent.GUIEvent.Element = 0;
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newEvent.GUIEvent.EventType = EGET_BUTTON_CLICKED;
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Parent->OnEvent(newEvent);
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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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return Parent ? Parent->OnEvent(event) : false;
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}
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//! draws the element and its children
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void CGUIButton::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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// todo: move sprite up and text down if the pressed state has a sprite
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const core::position2di spritePos = AbsoluteRect.getCenter();
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if (!Pressed)
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{
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if (DrawBorder)
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skin->draw3DButtonPaneStandard(this, AbsoluteRect, &AbsoluteClippingRect);
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if (Image)
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{
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core::position2d<s32> pos = spritePos;
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pos.X -= ImageRect.getWidth() / 2;
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pos.Y -= ImageRect.getHeight() / 2;
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2014-05-13 20:00:16 -04:00
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skin->draw2DImage(Image,
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ScaleImage ? AbsoluteRect :
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core::recti(pos, ImageRect.getSize()),
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ImageRect, &AbsoluteClippingRect,
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0, UseAlphaChannel);
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2015-02-05 14:13:33 -05:00
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//video::IVideoDriver* driver = Environment->getVideoDriver();
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2014-05-13 20:00:16 -04:00
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//driver->draw2DImage(Image,
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// ScaleImage? AbsoluteRect :
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// core::recti(pos, ImageRect.getSize()),
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// ImageRect, &AbsoluteClippingRect,
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// 0, UseAlphaChannel);
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2012-10-31 22:00:02 -04:00
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}
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}
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else
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{
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if (DrawBorder)
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skin->draw3DButtonPanePressed(this, AbsoluteRect, &AbsoluteClippingRect);
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if (PressedImage)
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{
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core::position2d<s32> pos = spritePos;
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pos.X -= PressedImageRect.getWidth() / 2;
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pos.Y -= PressedImageRect.getHeight() / 2;
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if (Image == PressedImage && PressedImageRect == ImageRect)
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{
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pos.X += skin->getSize(EGDS_BUTTON_PRESSED_IMAGE_OFFSET_X);
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pos.Y += skin->getSize(EGDS_BUTTON_PRESSED_IMAGE_OFFSET_Y);
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}
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2014-10-04 19:38:44 -04:00
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skin->draw2DImage(PressedImage,
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2012-10-31 22:00:02 -04:00
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ScaleImage? AbsoluteRect :
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core::recti(pos, PressedImageRect.getSize()),
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PressedImageRect, &AbsoluteClippingRect,
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0, UseAlphaChannel);
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}
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}
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2014-10-01 20:23:22 -04:00
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if (false) //SpriteBank)
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2012-10-31 22:00:02 -04:00
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{
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// pressed / unpressed animation
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u32 state = Pressed ? (u32)EGBS_BUTTON_DOWN : (u32)EGBS_BUTTON_UP;
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if (ButtonSprites[state].Index != -1)
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{
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SpriteBank->draw2DSprite(ButtonSprites[state].Index, spritePos,
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&AbsoluteClippingRect, ButtonSprites[state].Color, ClickTime, os::Timer::getTime(),
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ButtonSprites[state].Loop, true);
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}
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// focused / unfocused animation
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state = Environment->hasFocus(this) ? (u32)EGBS_BUTTON_FOCUSED : (u32)EGBS_BUTTON_NOT_FOCUSED;
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if (ButtonSprites[state].Index != -1)
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{
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SpriteBank->draw2DSprite(ButtonSprites[state].Index, spritePos,
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&AbsoluteClippingRect, ButtonSprites[state].Color, FocusTime, os::Timer::getTime(),
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ButtonSprites[state].Loop, true);
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}
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// mouse over / off animation
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if (isEnabled())
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{
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state = Environment->getHovered() == this ? (u32)EGBS_BUTTON_MOUSE_OVER : (u32)EGBS_BUTTON_MOUSE_OFF;
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if (ButtonSprites[state].Index != -1)
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{
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SpriteBank->draw2DSprite(ButtonSprites[state].Index, spritePos,
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&AbsoluteClippingRect, ButtonSprites[state].Color, HoverTime, os::Timer::getTime(),
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ButtonSprites[state].Loop, true);
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}
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}
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}
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if (Text.size())
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{
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IGUIFont* font = getActiveFont();
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core::rect<s32> rect = AbsoluteRect;
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if (Pressed)
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{
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rect.UpperLeftCorner.X += skin->getSize(EGDS_BUTTON_PRESSED_TEXT_OFFSET_X);
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rect.UpperLeftCorner.Y += skin->getSize(EGDS_BUTTON_PRESSED_TEXT_OFFSET_Y);
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}
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if (font)
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font->draw(Text.c_str(), rect,
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skin->getColor(isEnabled() ? EGDC_BUTTON_TEXT : EGDC_GRAY_TEXT),
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true, true, &AbsoluteClippingRect);
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}
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IGUIElement::draw();
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}
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//! sets another skin independent font. if this is set to zero, the button uses the font of the skin.
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void CGUIButton::setOverrideFont(IGUIFont* font)
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{
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if (OverrideFont == font)
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return;
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if (OverrideFont)
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OverrideFont->drop();
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OverrideFont = font;
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if (OverrideFont)
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OverrideFont->grab();
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}
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//! Gets the override font (if any)
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IGUIFont * CGUIButton::getOverrideFont() const
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{
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return OverrideFont;
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}
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//! Get the font which is used right now for drawing
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IGUIFont* CGUIButton::getActiveFont() const
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{
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if ( OverrideFont )
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return OverrideFont;
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IGUISkin* skin = Environment->getSkin();
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if (skin)
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return skin->getFont(EGDF_BUTTON);
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return 0;
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}
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//! Sets an image which should be displayed on the button when it is in normal state.
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void CGUIButton::setImage(video::ITexture* image)
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{
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if (image)
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image->grab();
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if (Image)
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Image->drop();
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Image = image;
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if (image)
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ImageRect = core::rect<s32>(core::position2d<s32>(0,0), image->getOriginalSize());
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if (!PressedImage)
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setPressedImage(Image);
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}
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//! Sets the image which should be displayed on the button when it is in its normal state.
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void CGUIButton::setImage(video::ITexture* image, const core::rect<s32>& pos)
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{
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setImage(image);
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ImageRect = pos;
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}
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//! Sets an image which should be displayed on the button when it is in pressed state.
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void CGUIButton::setPressedImage(video::ITexture* image)
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{
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if (image)
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image->grab();
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if (PressedImage)
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PressedImage->drop();
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PressedImage = image;
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if (image)
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PressedImageRect = core::rect<s32>(core::position2d<s32>(0,0), image->getOriginalSize());
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}
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//! Sets the image which should be displayed on the button when it is in its pressed state.
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void CGUIButton::setPressedImage(video::ITexture* image, const core::rect<s32>& pos)
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{
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setPressedImage(image);
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PressedImageRect = pos;
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}
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//! Sets if the button should behave like a push button. Which means it
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//! can be in two states: Normal or Pressed. With a click on the button,
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//! the user can change the state of the button.
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void CGUIButton::setIsPushButton(bool isPushButton)
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{
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IsPushButton = isPushButton;
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}
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//! Returns if the button is currently pressed
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bool CGUIButton::isPressed() const
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return Pressed;
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}
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//! Sets the pressed state of the button if this is a pushbutton
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void CGUIButton::setPressed(bool pressed)
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{
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if (Pressed != pressed)
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{
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ClickTime = os::Timer::getTime();
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Pressed = pressed;
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}
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}
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//! Returns whether the button is a push button
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bool CGUIButton::isPushButton() const
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return IsPushButton;
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}
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//! Sets if the alpha channel should be used for drawing images on the button (default is false)
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void CGUIButton::setUseAlphaChannel(bool useAlphaChannel)
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{
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UseAlphaChannel = useAlphaChannel;
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}
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//! Returns if the alpha channel should be used for drawing images on the button
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bool CGUIButton::isAlphaChannelUsed() const
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return UseAlphaChannel;
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}
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bool CGUIButton::isDrawingBorder() const
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return DrawBorder;
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}
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//! Writes attributes of the element.
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void CGUIButton::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
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{
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IGUIButton::serializeAttributes(out,options);
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out->addBool ("PushButton", IsPushButton );
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if (IsPushButton)
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out->addBool("Pressed", Pressed);
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out->addTexture ("Image", Image);
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out->addRect ("ImageRect", ImageRect);
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out->addTexture ("PressedImage", PressedImage);
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out->addRect ("PressedImageRect", PressedImageRect);
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out->addBool ("UseAlphaChannel", isAlphaChannelUsed());
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out->addBool ("Border", isDrawingBorder());
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out->addBool ("ScaleImage", isScalingImage());
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// out->addString ("OverrideFont", OverrideFont);
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}
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//! Reads attributes of the element
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void CGUIButton::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
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{
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IGUIButton::deserializeAttributes(in,options);
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IsPushButton = in->getAttributeAsBool("PushButton");
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Pressed = IsPushButton ? in->getAttributeAsBool("Pressed") : false;
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core::rect<s32> rec = in->getAttributeAsRect("ImageRect");
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if (rec.isValid())
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setImage( in->getAttributeAsTexture("Image"), rec);
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else
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setImage( in->getAttributeAsTexture("Image") );
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rec = in->getAttributeAsRect("PressedImageRect");
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if (rec.isValid())
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setPressedImage( in->getAttributeAsTexture("PressedImage"), rec);
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else
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setPressedImage( in->getAttributeAsTexture("PressedImage") );
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setDrawBorder(in->getAttributeAsBool("Border"));
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setUseAlphaChannel(in->getAttributeAsBool("UseAlphaChannel"));
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setScaleImage(in->getAttributeAsBool("ScaleImage"));
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// setOverrideFont(in->getAttributeAsString("OverrideFont"));
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updateAbsolutePosition();
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}
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} // end namespace gui
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} // end namespace irr
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#endif // _IRR_COMPILE_WITH_GUI_
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