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34 lines
888 B
C++
34 lines
888 B
C++
#pragma once
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#include "drape/graphics_context.hpp"
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#include "geometry/point2d.hpp"
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namespace dp
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{
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// Pixel ratio independent viewport implementation.
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// pixelRatio is ratio between physical pixels and device-independent pixels for the window.
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class Viewport
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{
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public:
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// x0, y0, w, h is device-independent pixels
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Viewport(uint32_t x0, uint32_t y0, uint32_t w, uint32_t h);
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// On iOS we must multiply this on scaleFactor.
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// On Android we get true size from surface.
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void SetViewport(uint32_t x0, uint32_t y0, uint32_t w, uint32_t h);
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uint32_t GetX0() const;
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uint32_t GetY0() const;
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uint32_t GetWidth() const;
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uint32_t GetHeight() const;
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// Apply viewport to graphics pipeline with convert start point and size to physical pixels.
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void Apply(ref_ptr<dp::GraphicsContext> context) const;
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private:
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m2::PointU m_zero;
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m2::PointU m_size;
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};
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} // namespace dp
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