Repo created

libs/drape/texture.hpp

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+#pragma once
+
+#include "drape/graphics_context.hpp"
+#include "drape/hw_texture.hpp"
+#include "drape/pointers.hpp"
+#include "drape/texture_types.hpp"
+
+#include "geometry/rect2d.hpp"
+
+#include "base/macros.hpp"
+
+#include <cstdint>
+
+namespace dp
+{
+class Texture
+{
+public:
+  enum class ResourceType : uint8_t
+  {
+    Symbol,
+    Glyph,
+    StipplePen,
+    Color,
+    Static
+  };
+
+  class Key
+  {
+  public:
+    virtual ~Key() = default;
+    virtual ResourceType GetType() const = 0;
+  };
+
+  class ResourceInfo
+  {
+  public:
+    explicit ResourceInfo(m2::RectF const & texRect);
+    virtual ~ResourceInfo() = default;
+    virtual ResourceType GetType() const = 0;
+    m2::RectF const & GetTexRect() const;
+
+  private:
+    m2::RectF m_texRect;
+  };
+
+  Texture() = default;
+  virtual ~Texture() = default;
+
+  virtual ref_ptr<ResourceInfo> FindResource(Key const & key, bool & newResource) = 0;
+  virtual void UpdateState(ref_ptr<dp::GraphicsContext> context) {}
+  virtual bool HasEnoughSpace(uint32_t /* newKeysCount */) const { return true; }
+  using Params = HWTexture::Params;
+
+  virtual TextureFormat GetFormat() const;
+  virtual uint32_t GetWidth() const;
+  virtual uint32_t GetHeight() const;
+  virtual float GetS(uint32_t x) const;
+  virtual float GetT(uint32_t y) const;
+  virtual uint32_t GetID() const;
+
+  virtual void Bind(ref_ptr<dp::GraphicsContext> context) const;
+
+  // Texture must be bound before calling this method.
+  virtual void SetFilter(TextureFilter filter);
+
+  virtual void Create(ref_ptr<dp::GraphicsContext> context, Params const & params);
+  virtual void Create(ref_ptr<dp::GraphicsContext> context, Params const & params, ref_ptr<void> data);
+  void UploadData(ref_ptr<dp::GraphicsContext> context, uint32_t x, uint32_t y, uint32_t width, uint32_t height,
+                  ref_ptr<void> data);
+
+  ref_ptr<HWTexture> GetHardwareTexture() const;
+
+  static bool IsPowerOfTwo(uint32_t width, uint32_t height);
+
+protected:
+  void Destroy();
+  bool AllocateTexture(ref_ptr<dp::GraphicsContext> context, ref_ptr<HWTextureAllocator> allocator);
+
+  drape_ptr<HWTexture> m_hwTexture;
+
+  DISALLOW_COPY_AND_MOVE(Texture);
+};
+}  // namespace dp