irrlicht/include/IGUIImage.h

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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
#ifndef __I_GUI_IMAGE_H_INCLUDED__
#define __I_GUI_IMAGE_H_INCLUDED__
#include "IGUIElement.h"
namespace irr
{
namespace video
{
class ITexture;
}
namespace gui
{
//! GUI element displaying an image.
class IGUIImage : public IGUIElement
{
public:
//! constructor
IGUIImage(IGUIEnvironment* environment, IGUIElement* parent, s32 id, core::rect<s32> rectangle)
: IGUIElement(EGUIET_IMAGE, environment, parent, id, rectangle) {}
//! Sets an image texture
virtual void setImage(video::ITexture* image) = 0;
//! Gets the image texture
virtual video::ITexture* getImage() const = 0;
//! Sets the color of the image
/** \param color Color with which the image is drawn. If the color
equals Color(255,255,255,255) it is ignored. */
virtual void setColor(video::SColor color) = 0;
//! Sets if the image should scale to fit the element
virtual void setScaleImage(bool scale) = 0;
//! Sets if the image should use its alpha channel to draw itself
virtual void setUseAlphaChannel(bool use) = 0;
//! Gets the color of the image
virtual video::SColor getColor() const = 0;
//! Returns true if the image is scaled to fit, false if not
virtual bool isImageScaled() const = 0;
//! Returns true if the image is using the alpha channel, false if not
virtual bool isAlphaChannelUsed() const = 0;
//! Sets the source rectangle of the image. By default the full image is used.
/** \param sourceRect coordinates inside the image or an area with size 0 for using the full image (default). */
virtual void setSourceRect(const core::rect<s32>& sourceRect) = 0;
//! Returns the customized source rectangle of the image to be used.
/** By default an empty rectangle of width and height 0 is returned which means the full image is used. */
virtual core::rect<s32> getSourceRect() const = 0;
//! Restrict drawing-area.
/** This allows for example to use the image as a progress bar.
Base for area is the image, which means:
- The original clipping area when the texture is scaled or there is no texture.
- The source-rect for an unscaled texture (but still restricted afterward by the clipping area)
Unlike normal clipping this does not affect the gui-children.
\param drawBoundUVs: Coordinates between 0 and 1 where 0 are for left+top and 1 for right+bottom
*/
virtual void setDrawBounds(const core::rect<f32>& drawBoundUVs = core::rect<f32>(0.f, 0.f, 1.f, 1.f)) = 0;
//! Get drawing-area restrictions.
virtual core::rect<f32> getDrawBounds() const = 0;
//! Sets whether to draw a background color (EGDC_3D_DARK_SHADOW) when no texture is set
/** By default it's enabled */
virtual void setDrawBackground(bool draw) = 0;
//! Checks if a background is drawn when no texture is set
/** \return true if background drawing is enabled, false otherwise */
virtual bool isDrawBackgroundEnabled() const = 0;
};
} // end namespace gui
} // end namespace irr
#endif