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54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
#pragma once
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#include "../GuiComponent.h"
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#include "../resources/TextureResource.h"
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// Display an image in a way so that edges don't get too distorted no matter the final size. Useful for UI elements like backgrounds, buttons, etc.
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// This is accomplished by splitting an image into 9 pieces:
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// ___________
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// |_1_|_2_|_3_|
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// |_4_|_5_|_6_|
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// |_7_|_8_|_9_|
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// Corners (1, 3, 7, 9) will not be stretched at all.
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// Borders (2, 4, 6, 8) will be stretched along one axis (2 and 8 horizontally, 4 and 6 vertically).
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// The center (5) will be stretched.
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class NinePatchComponent : public GuiComponent
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{
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public:
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NinePatchComponent(Window* window, const std::string& path = "", unsigned int edgeColor = 0xFFFFFFFF, unsigned int centerColor = 0xFFFFFFFF);
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void render(const Eigen::Affine3f& parentTrans) override;
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void onSizeChanged() override;
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void fitTo(Eigen::Vector2f size, Eigen::Vector3f position = Eigen::Vector3f::Zero(), Eigen::Vector2f padding = Eigen::Vector2f::Zero());
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void setImagePath(const std::string& path);
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void setEdgeColor(unsigned int edgeColor); // Apply a color shift to the "edge" parts of the ninepatch.
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void setCenterColor(unsigned int centerColor); // Apply a color shift to the "center" part of the ninepatch.
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virtual void applyTheme(const std::shared_ptr<ThemeData>& theme, const std::string& view, const std::string& element, unsigned int properties) override;
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private:
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Eigen::Vector2f getCornerSize() const;
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void buildVertices();
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void updateColors();
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struct Vertex
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{
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Eigen::Vector2f pos;
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Eigen::Vector2f tex;
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};
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Vertex* mVertices;
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GLubyte* mColors;
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std::string mPath;
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unsigned int mEdgeColor;
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unsigned int mCenterColor;
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std::shared_ptr<TextureResource> mTexture;
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};
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