mirror of https://github.com/minetest/irrlicht.git
157 lines
2.9 KiB
C++
157 lines
2.9 KiB
C++
// 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 "CGUIInOutFader.h"
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#ifdef _IRR_COMPILE_WITH_GUI_
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#include "IGUIEnvironment.h"
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#include "IVideoDriver.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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CGUIInOutFader::CGUIInOutFader(IGUIEnvironment* environment, IGUIElement* parent, s32 id, core::rect<s32> rectangle)
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: IGUIInOutFader(environment, parent, id, rectangle)
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{
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#ifdef _DEBUG
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setDebugName("CGUIInOutFader");
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#endif
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Action = EFA_NOTHING;
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StartTime = 0;
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EndTime = 0;
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setColor(video::SColor(0,0,0,0));
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}
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//! draws the element and its children
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void CGUIInOutFader::draw()
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{
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if (!IsVisible || !Action)
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return;
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u32 now = os::Timer::getTime();
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if (now > EndTime && Action == EFA_FADE_IN)
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{
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Action = EFA_NOTHING;
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return;
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}
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video::IVideoDriver* driver = Environment->getVideoDriver();
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if (driver)
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{
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f32 d;
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if (now > EndTime)
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d = 0.0f;
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else
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d = (EndTime - now) / (f32)(EndTime - StartTime);
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video::SColor newCol = FullColor.getInterpolated(TransColor, d);
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driver->draw2DRectangle(newCol, AbsoluteRect, &AbsoluteClippingRect);
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}
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IGUIElement::draw();
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}
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//! Gets the color to fade out to or to fade in from.
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video::SColor CGUIInOutFader::getColor() const
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{
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return Color[1];
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}
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//! Sets the color to fade out to or to fade in from.
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void CGUIInOutFader::setColor(video::SColor color)
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{
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video::SColor s = color;
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video::SColor d = color;
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s.setAlpha ( 255 );
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d.setAlpha ( 0 );
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setColor ( s,d );
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/*
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Color[0] = color;
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FullColor = Color[0];
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TransColor = Color[0];
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if (Action == EFA_FADE_OUT)
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{
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FullColor.setAlpha(0);
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TransColor.setAlpha(255);
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}
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else
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if (Action == EFA_FADE_IN)
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{
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FullColor.setAlpha(255);
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TransColor.setAlpha(0);
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}
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*/
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}
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void CGUIInOutFader::setColor(video::SColor source, video::SColor dest)
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{
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Color[0] = source;
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Color[1] = dest;
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if (Action == EFA_FADE_OUT)
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{
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FullColor = Color[1];
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TransColor = Color[0];
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}
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else
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if (Action == EFA_FADE_IN)
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{
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FullColor = Color[0];
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TransColor = Color[1];
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}
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}
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//! Returns if the fade in or out process is done.
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bool CGUIInOutFader::isReady() const
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{
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u32 now = os::Timer::getTime();
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bool ret = (now > EndTime);
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return ret;
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}
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//! Starts the fade in process.
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void CGUIInOutFader::fadeIn(u32 time)
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{
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StartTime = os::Timer::getTime();
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EndTime = StartTime + time;
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Action = EFA_FADE_IN;
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setColor(Color[0],Color[1]);
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}
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//! Starts the fade out process.
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void CGUIInOutFader::fadeOut(u32 time)
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{
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StartTime = os::Timer::getTime();
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EndTime = StartTime + time;
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Action = EFA_FADE_OUT;
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setColor(Color[0],Color[1]);
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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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