irrlicht/source/Irrlicht/CGUIImage.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
#pragma once
#include "IGUIImage.h"
namespace irr
{
namespace gui
{
class CGUIImage : public IGUIImage
{
public:
//! constructor
CGUIImage(IGUIEnvironment* environment, IGUIElement* parent, s32 id, core::rect<s32> rectangle);
//! destructor
virtual ~CGUIImage();
//! sets an image
void setImage(video::ITexture* image) override;
//! Gets the image texture
video::ITexture* getImage() const override;
//! sets the color of the image
void setColor(video::SColor color) override;
//! sets if the image should scale to fit the element
void setScaleImage(bool scale) override;
//! draws the element and its children
void draw() override;
//! sets if the image should use its alpha channel to draw itself
void setUseAlphaChannel(bool use) override;
//! Gets the color of the image
video::SColor getColor() const override;
//! Returns true if the image is scaled to fit, false if not
bool isImageScaled() const override;
//! Returns true if the image is using the alpha channel, false if not
bool isAlphaChannelUsed() const override;
//! Sets the source rectangle of the image. By default the full image is used.
void setSourceRect(const core::rect<s32>& sourceRect) override;
//! Returns the customized source rectangle of the image to be used.
core::rect<s32> getSourceRect() const override;
//! Restrict drawing-area.
void setDrawBounds(const core::rect<f32>& drawBoundUVs) override;
//! Get drawing-area restrictions.
core::rect<f32> getDrawBounds() const override;
//! Sets whether to draw a background color (EGDC_3D_DARK_SHADOW) when no texture is set
void setDrawBackground(bool draw) override
{
DrawBackground = draw;
}
//! Checks if a background is drawn when no texture is set
bool isDrawBackgroundEnabled() const override
{
return DrawBackground;
}
protected:
void checkBounds(core::rect<s32>& rect)
{
f32 clipWidth = (f32)rect.getWidth();
f32 clipHeight = (f32)rect.getHeight();
rect.UpperLeftCorner.X += core::round32(DrawBounds.UpperLeftCorner.X*clipWidth);
rect.UpperLeftCorner.Y += core::round32(DrawBounds.UpperLeftCorner.Y*clipHeight);
rect.LowerRightCorner.X -= core::round32((1.f-DrawBounds.LowerRightCorner.X)*clipWidth);
rect.LowerRightCorner.Y -= core::round32((1.f-DrawBounds.LowerRightCorner.Y)*clipHeight);
}
private:
video::ITexture* Texture;
video::SColor Color;
bool UseAlphaChannel;
bool ScaleImage;
core::rect<s32> SourceRect;
core::rect<f32> DrawBounds;
bool DrawBackground;
};
} // end namespace gui
} // end namespace irr