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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 "CGUIImage.h"
#include "IGUISkin.h"
#include "IGUIEnvironment.h"
#include "IVideoDriver.h"
namespace irr
{
namespace gui
{
//! constructor
CGUIImage::CGUIImage(IGUIEnvironment* environment, IGUIElement* parent, s32 id, core::rect<s32> rectangle)
: IGUIImage(environment, parent, id, rectangle), Texture(0), Color(255,255,255,255),
UseAlphaChannel(false), ScaleImage(false), DrawBounds(0.f, 0.f, 1.f, 1.f), DrawBackground(true)
{
#ifdef _DEBUG
setDebugName("CGUIImage");
#endif
}
//! destructor
CGUIImage::~CGUIImage()
{
if (Texture)
Texture->drop();
}
//! sets an image
void CGUIImage::setImage(video::ITexture* image)
{
if (image == Texture)
return;
if (Texture)
Texture->drop();
Texture = image;
if (Texture)
Texture->grab();
}
//! Gets the image texture
video::ITexture* CGUIImage::getImage() const
{
return Texture;
}
//! sets the color of the image
void CGUIImage::setColor(video::SColor color)
{
Color = color;
}
//! Gets the color of the image
video::SColor CGUIImage::getColor() const
{
return Color;
}
//! draws the element and its children
void CGUIImage::draw()
{
if (!IsVisible)
return;
IGUISkin* skin = Environment->getSkin();
video::IVideoDriver* driver = Environment->getVideoDriver();
if (Texture)
{
core::rect<s32> sourceRect(SourceRect);
if (sourceRect.getWidth() == 0 || sourceRect.getHeight() == 0)
{
sourceRect = core::rect<s32>(core::dimension2di(Texture->getOriginalSize()));
}
if (ScaleImage)
{
const video::SColor Colors[] = {Color,Color,Color,Color};
core::rect<s32> clippingRect(AbsoluteClippingRect);
checkBounds(clippingRect);
driver->draw2DImage(Texture, AbsoluteRect, sourceRect,
&clippingRect, Colors, UseAlphaChannel);
}
else
{
core::rect<s32> clippingRect(AbsoluteRect.UpperLeftCorner, sourceRect.getSize());
checkBounds(clippingRect);
clippingRect.clipAgainst(AbsoluteClippingRect);
driver->draw2DImage(Texture, AbsoluteRect.UpperLeftCorner, sourceRect,
&clippingRect, Color, UseAlphaChannel);
}
}
else if ( DrawBackground )
{
core::rect<s32> clippingRect(AbsoluteClippingRect);
checkBounds(clippingRect);
skin->draw2DRectangle(this, skin->getColor(EGDC_3D_DARK_SHADOW), AbsoluteRect, &clippingRect);
}
IGUIElement::draw();
}
//! sets if the image should use its alpha channel to draw itself
void CGUIImage::setUseAlphaChannel(bool use)
{
UseAlphaChannel = use;
}
//! sets if the image should use its alpha channel to draw itself
void CGUIImage::setScaleImage(bool scale)
{
ScaleImage = scale;
}
//! Returns true if the image is scaled to fit, false if not
bool CGUIImage::isImageScaled() const
{
return ScaleImage;
}
//! Returns true if the image is using the alpha channel, false if not
bool CGUIImage::isAlphaChannelUsed() const
{
return UseAlphaChannel;
}
//! Sets the source rectangle of the image. By default the full image is used.
void CGUIImage::setSourceRect(const core::rect<s32>& sourceRect)
{
SourceRect = sourceRect;
}
//! Returns the customized source rectangle of the image to be used.
core::rect<s32> CGUIImage::getSourceRect() const
{
return SourceRect;
}
//! Restrict target drawing-area.
void CGUIImage::setDrawBounds(const core::rect<f32>& drawBoundUVs)
{
DrawBounds = drawBoundUVs;
DrawBounds.UpperLeftCorner.X = core::clamp(DrawBounds.UpperLeftCorner.X, 0.f, 1.f);
DrawBounds.UpperLeftCorner.Y = core::clamp(DrawBounds.UpperLeftCorner.Y, 0.f, 1.f);
DrawBounds.LowerRightCorner.X = core::clamp(DrawBounds.LowerRightCorner.X, 0.f, 1.f);
DrawBounds.LowerRightCorner.X = core::clamp(DrawBounds.LowerRightCorner.X, 0.f, 1.f);
if ( DrawBounds.UpperLeftCorner.X > DrawBounds.LowerRightCorner.X )
DrawBounds.UpperLeftCorner.X = DrawBounds.LowerRightCorner.X;
if ( DrawBounds.UpperLeftCorner.Y > DrawBounds.LowerRightCorner.Y )
DrawBounds.UpperLeftCorner.Y = DrawBounds.LowerRightCorner.Y;
}
//! Get target drawing-area restrictions.
core::rect<f32> CGUIImage::getDrawBounds() const
{
return DrawBounds;
}
} // end namespace gui
} // end namespace irr
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