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#pragma once
#include <mbgl/util/image.hpp>
#include <array>
namespace mbgl {
class Map;
class View : private util::noncopyable {
public:
virtual ~View() = default;
// Called when this View is associated with a Map object.
virtual void initialize(Map*);
// Called when this View is used for rendering. Implementations should ensure that a renderable
// object is bound and glClear/glDraw* calls can be done.
virtual void bind() = 0;
// Called when the View signaled a dimension change. Must return the logical dimension
// of this map in pixels.
virtual std::array<uint16_t, 2> getSize() const = 0;
// Called for every frame that is being rendered. Must return the absolute dimensions of
// the current framebuffer. Typically, this is the logical width scaled by the pixel ratio,
// but in case the view was moved to display with a different pixel ratio, it can also be
// different from that rule.
virtual std::array<uint16_t, 2> getFramebufferSize() const = 0;
// Reads the pixel data from the current framebuffer. If your View implementation
// doesn't support reading from the framebuffer, return a null pointer.
virtual PremultipliedImage readStillImage(std::array<uint16_t, 2> size = {{ 0, 0 }});
protected:
mbgl::Map *map = nullptr;
};
} // namespace mbgl
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