ES-DE/es-core/src/components/ImageComponent.h

97 lines
3.1 KiB
C++

#pragma once
#ifndef ES_CORE_COMPONENTS_IMAGE_COMPONENT_H
#define ES_CORE_COMPONENTS_IMAGE_COMPONENT_H
#include "math/Vector2i.h"
#include "GuiComponent.h"
#include "platform.h"
#include GLHEADER
class TextureResource;
class ImageComponent : public GuiComponent
{
public:
ImageComponent(Window* window, bool forceLoad = false, bool dynamic = true);
virtual ~ImageComponent();
void setDefaultImage(std::string path);
//Loads the image at the given filepath. Will tile if tile is true (retrieves texture as tiling, creates vertices accordingly).
void setImage(std::string path, bool tile = false);
//Loads an image from memory.
void setImage(const char* image, size_t length, bool tile = false);
//Use an already existing texture.
void setImage(const std::shared_ptr<TextureResource>& texture);
void onSizeChanged() override;
void setOpacity(unsigned char opacity) override;
// Resize the image to fit this size. If one axis is zero, scale that axis to maintain aspect ratio.
// If both are non-zero, potentially break the aspect ratio. If both are zero, no resizing.
// Can be set before or after an image is loaded.
// setMaxSize() and setResize() are mutually exclusive.
void setResize(float width, float height);
inline void setResize(const Vector2f& size) { setResize(size.x(), size.y()); }
// Resize the image to be as large as possible but fit within a box of this size.
// Can be set before or after an image is loaded.
// Never breaks the aspect ratio. setMaxSize() and setResize() are mutually exclusive.
void setMaxSize(float width, float height);
inline void setMaxSize(const Vector2f& size) { setMaxSize(size.x(), size.y()); }
Vector2f getRotationSize() const override;
// Multiply all pixels in the image by this color when rendering.
void setColorShift(unsigned int color);
void setFlipX(bool flip); // Mirror on the X axis.
void setFlipY(bool flip); // Mirror on the Y axis.
void setRotateByTargetSize(bool rotate); // Flag indicating if rotation should be based on target size vs. actual size.
// Returns the size of the current texture, or (0, 0) if none is loaded. May be different than drawn size (use getSize() for that).
Vector2i getTextureSize() const;
bool hasImage();
void render(const Transform4x4f& parentTrans) override;
virtual void applyTheme(const std::shared_ptr<ThemeData>& theme, const std::string& view, const std::string& element, unsigned int properties) override;
virtual std::vector<HelpPrompt> getHelpPrompts() override;
private:
Vector2f mTargetSize;
bool mFlipX, mFlipY, mTargetIsMax;
// Calculates the correct mSize from our resizing information (set by setResize/setMaxSize).
// Used internally whenever the resizing parameters or texture change.
void resize();
struct Vertex
{
Vector2f pos;
Vector2f tex;
} mVertices[6];
GLubyte mColors[6*4];
void updateVertices();
void updateColors();
void fadeIn(bool textureLoaded);
unsigned int mColorShift;
std::string mDefaultPath;
std::shared_ptr<TextureResource> mTexture;
unsigned char mFadeOpacity;
bool mFading;
bool mForceLoad;
bool mDynamic;
bool mRotateByTargetSize;
};
#endif // ES_CORE_COMPONENTS_IMAGE_COMPONENT_H