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