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53 lines
2.2 KiB
C++
53 lines
2.2 KiB
C++
#ifndef _GUIIMAGE_H_
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#define _GUIIMAGE_H_
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#include "../GuiComponent.h"
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#include <string>
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#include <FreeImage.h>
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#include "../platform.h"
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#include GLHEADER
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class GuiImage : public GuiComponent
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{
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public:
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//Creates a new GuiImage at the given location. If given an image, it will be loaded. If maxWidth and/or maxHeight are nonzero, the image will be
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//resized to fix. If only one axis is specified, the other will be resized in accordance with the image's aspect ratio. If resizeExact is false,
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//the image will only be downscaled, never upscaled (the image's size must surpass at least one nonzero bound).
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GuiImage(int offsetX = 0, int offsetY = 0, std::string path = "", unsigned int maxWidth = 0, unsigned int maxHeight = 0, bool resizeExact = false);
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~GuiImage();
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void setImage(std::string path); //Loads the image at the given filepath.
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void setOrigin(float originX, float originY); //Sets the origin as a percentage of this image (e.g. (0, 0) is top left, (0.5, 0.5) is the center)
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void setTiling(bool tile); //Enables or disables tiling. Must be called before loading an image or resizing will be weird.
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void setResize(unsigned int width, unsigned int height, bool resizeExact);
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unsigned int getWidth(); //Returns render width in pixels. May be different than actual texture width.
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unsigned int getHeight(); //Returns render height in pixels. May be different than actual texture height.
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void onRender();
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//Image textures will be deleted on renderer deinitialization, and recreated on reinitialization (if mPath is not empty).
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void onInit();
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void onDeinit();
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private:
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unsigned int mResizeWidth, mResizeHeight;
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float mOriginX, mOriginY;
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bool mResizeExact, mTiled;
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void loadImage(std::string path);
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void resize();
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void buildImageArray(int x, int y, GLfloat* points, GLfloat* texs); //writes 12 GLfloat points and 12 GLfloat texture coordinates to a given array at a given position
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void drawImageArray(GLfloat* points, GLfloat* texs, unsigned int count = 6); //draws the given set of points and texture coordinates, number of coordinate pairs may be specified (default 6)
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void unloadImage();
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std::string mPath;
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unsigned int mWidth, mHeight; //Our rendered size.
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unsigned int mDrawWidth, mDrawHeight;
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GLuint mTextureID;
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};
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#endif
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