ES-DE/es-core/src/components/NinePatchComponent.h
Jesper Ek 1e320b7718 Fixes two memory leaks, which caused the scraper to crash after a while. I believe this fixes #180.
Fixes #352 (duplicate).
Fixes #362 (duplicate).

The destructor for AsyncHandle needs to be virtual as its subclasses are
allocated dynamically. I believe this caused the ImageDownloadHandle and its
related resources (such as the HttpReq and its contents) not to be freed
correctly.
2015-02-09 23:23:36 +01:00

55 lines
1.7 KiB
C++

#pragma once
#include "GuiComponent.h"
#include "resources/TextureResource.h"
// 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.
// This is accomplished by splitting an image into 9 pieces:
// ___________
// |_1_|_2_|_3_|
// |_4_|_5_|_6_|
// |_7_|_8_|_9_|
// Corners (1, 3, 7, 9) will not be stretched at all.
// Borders (2, 4, 6, 8) will be stretched along one axis (2 and 8 horizontally, 4 and 6 vertically).
// The center (5) will be stretched.
class NinePatchComponent : public GuiComponent
{
public:
NinePatchComponent(Window* window, const std::string& path = "", unsigned int edgeColor = 0xFFFFFFFF, unsigned int centerColor = 0xFFFFFFFF);
virtual ~NinePatchComponent();
void render(const Eigen::Affine3f& parentTrans) override;
void onSizeChanged() override;
void fitTo(Eigen::Vector2f size, Eigen::Vector3f position = Eigen::Vector3f::Zero(), Eigen::Vector2f padding = Eigen::Vector2f::Zero());
void setImagePath(const std::string& path);
void setEdgeColor(unsigned int edgeColor); // Apply a color shift to the "edge" parts of the ninepatch.
void setCenterColor(unsigned int centerColor); // Apply a color shift to the "center" part of the ninepatch.
virtual void applyTheme(const std::shared_ptr<ThemeData>& theme, const std::string& view, const std::string& element, unsigned int properties) override;
private:
Eigen::Vector2f getCornerSize() const;
void buildVertices();
void updateColors();
struct Vertex
{
Eigen::Vector2f pos;
Eigen::Vector2f tex;
};
Vertex* mVertices;
GLubyte* mColors;
std::string mPath;
unsigned int mEdgeColor;
unsigned int mCenterColor;
std::shared_ptr<TextureResource> mTexture;
};