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#pragma once
#include "drape/color.hpp"
#include "drape/glyph_generator.hpp"
#include "drape/glyph_manager.hpp"
#include "drape/pointers.hpp"
#include "drape/texture.hpp"
#include "drape/font_texture.hpp"
#include "base/string_utils.hpp"
#include "base/timer.hpp"
#include <atomic>
#include <list>
#include <mutex>
#include <string>
#include <vector>
namespace dp
{
extern std::string const kDefaultSymbolsTexture;
class HWTextureAllocator;
class TextureManager
{
public:
class BaseRegion
{
public:
BaseRegion();
void SetResourceInfo(ref_ptr<Texture::ResourceInfo> info);
void SetTexture(ref_ptr<Texture> texture);
ref_ptr<Texture> GetTexture() const { return m_texture; }
bool IsValid() const;
m2::PointF GetPixelSize() const;
float GetPixelHeight() const;
m2::RectF const & GetTexRect() const;
protected:
ref_ptr<Texture::ResourceInfo> m_info;
ref_ptr<Texture> m_texture;
};
class SymbolRegion : public BaseRegion {};
class GlyphRegion : public BaseRegion
{
public:
GlyphRegion();
float GetOffsetX() const;
float GetOffsetY() const;
float GetAdvanceX() const;
float GetAdvanceY() const;
};
class StippleRegion : public BaseRegion
{
public:
StippleRegion() : BaseRegion() {}
uint32_t GetMaskPixelLength() const;
uint32_t GetPatternPixelLength() const;
};
class ColorRegion : public BaseRegion
{
public:
ColorRegion() : BaseRegion() {}
};
struct Params
{
std::string m_resPostfix;
double m_visualScale = 1.0;
std::string m_colors;
std::string m_patterns;
GlyphManager::Params m_glyphMngParams;
};
explicit TextureManager(ref_ptr<GlyphGenerator> glyphGenerator);
void Release();
void Init(ref_ptr<dp::GraphicsContext> context, Params const & params);
void OnSwitchMapStyle(ref_ptr<dp::GraphicsContext> context);
void GetTexturesToCleanup(std::vector<drape_ptr<HWTexture>> & textures);
void GetSymbolRegion(std::string const & symbolName, SymbolRegion & region);
bool HasSymbolRegion(std::string const & symbolName) const;
typedef buffer_vector<uint8_t, 8> TStipplePattern;
void GetStippleRegion(TStipplePattern const & pen, StippleRegion & region);
void GetColorRegion(Color const & color, ColorRegion & region);
using TMultilineText = buffer_vector<strings::UniString, 4>;
using TGlyphsBuffer = buffer_vector<GlyphRegion, 128>;
using TMultilineGlyphsBuffer = buffer_vector<TGlyphsBuffer, 4>;
void GetGlyphRegions(TMultilineText const & text, int fixedHeight, TMultilineGlyphsBuffer & buffers);
void GetGlyphRegions(strings::UniString const & text, int fixedHeight, TGlyphsBuffer & regions);
// This method must be called only on Frontend renderer's thread.
bool AreGlyphsReady(strings::UniString const & str, int fixedHeight) const;
// On some devices OpenGL driver can't resolve situation when we upload to a texture on a thread
// and use this texture to render on another thread. By this we move UpdateDynamicTextures call
// into render thread. If you implement some kind of dynamic texture, you must synchronize UploadData
// and index creation operations.
// The result of the method shows if there are some changes in texture manager.
bool UpdateDynamicTextures(ref_ptr<dp::GraphicsContext> context);
ref_ptr<Texture> GetSymbolsTexture() const;
ref_ptr<Texture> GetTrafficArrowTexture() const;
ref_ptr<Texture> GetHatchingTexture() const;
ref_ptr<Texture> GetSMAAAreaTexture() const;
ref_ptr<Texture> GetSMAASearchTexture() const;
private:
struct GlyphGroup
{
GlyphGroup()
: m_startChar(0), m_endChar(0), m_texture(nullptr)
{}
GlyphGroup(strings::UniChar const & start, strings::UniChar const & end)
: m_startChar(start), m_endChar(end), m_texture(nullptr)
{}
strings::UniChar m_startChar;
strings::UniChar m_endChar;
ref_ptr<Texture> m_texture;
};
struct HybridGlyphGroup
{
HybridGlyphGroup()
: m_texture(nullptr)
{}
std::set<std::pair<strings::UniChar, int>> m_glyphs;
ref_ptr<Texture> m_texture;
};
uint32_t m_maxTextureSize;
uint32_t m_maxGlypsCount;
ref_ptr<Texture> AllocateGlyphTexture();
void GetRegionBase(ref_ptr<Texture> tex, TextureManager::BaseRegion & region, Texture::Key const & key);
void GetGlyphsRegions(ref_ptr<FontTexture> tex, strings::UniString const & text,
int fixedHeight, TGlyphsBuffer & regions);
size_t FindHybridGlyphsGroup(strings::UniString const & text, int fixedHeight);
size_t FindHybridGlyphsGroup(TMultilineText const & text, int fixedHeight);
uint32_t GetNumberOfUnfoundCharacters(strings::UniString const & text, int fixedHeight,
HybridGlyphGroup const & group) const;
void MarkCharactersUsage(strings::UniString const & text, int fixedHeight, HybridGlyphGroup & group);
// It's a dummy method to support generic code.
void MarkCharactersUsage(strings::UniString const & text, int fixedHeight, GlyphGroup & group) {}
template<typename TGlyphGroup>
void FillResultBuffer(strings::UniString const & text, int fixedHeight, TGlyphGroup & group,
TGlyphsBuffer & regions)
{
if (group.m_texture == nullptr)
group.m_texture = AllocateGlyphTexture();
GetGlyphsRegions(group.m_texture, text, fixedHeight, regions);
}
template<typename TGlyphGroup>
void FillResults(strings::UniString const & text, int fixedHeight, TGlyphsBuffer & buffers,
TGlyphGroup & group)
{
MarkCharactersUsage(text, fixedHeight, group);
FillResultBuffer<TGlyphGroup>(text, fixedHeight, group, buffers);
}
template<typename TGlyphGroup>
void FillResults(TMultilineText const & text, int fixedHeight, TMultilineGlyphsBuffer & buffers,
TGlyphGroup & group)
{
buffers.resize(text.size());
for (size_t i = 0; i < text.size(); ++i)
{
strings::UniString const & str = text[i];
TGlyphsBuffer & buffer = buffers[i];
FillResults<TGlyphGroup>(str, fixedHeight, buffer, group);
}
}
template<typename TText, typename TBuffer>
void CalcGlyphRegions(TText const & text, int fixedHeight, TBuffer & buffers)
{
CHECK(m_isInitialized, ());
size_t const hybridGroupIndex = FindHybridGlyphsGroup(text, fixedHeight);
ASSERT(hybridGroupIndex != GetInvalidGlyphGroup(), ());
HybridGlyphGroup & group = m_hybridGlyphGroups[hybridGroupIndex];
FillResults<HybridGlyphGroup>(text, fixedHeight, buffers, group);
}
uint32_t GetAbsentGlyphsCount(ref_ptr<Texture> texture, strings::UniString const & text,
int fixedHeight) const;
uint32_t GetAbsentGlyphsCount(ref_ptr<Texture> texture, TMultilineText const & text,
int fixedHeight) const;
void UpdateGlyphTextures(ref_ptr<dp::GraphicsContext> context);
bool HasAsyncRoutines() const;
static constexpr size_t GetInvalidGlyphGroup();
private:
bool m_isInitialized = false;
ref_ptr<GlyphGenerator> m_glyphGenerator;
std::string m_resPostfix;
std::vector<drape_ptr<Texture>> m_symbolTextures;
drape_ptr<Texture> m_stipplePenTexture;
drape_ptr<Texture> m_colorTexture;
std::list<drape_ptr<Texture>> m_glyphTextures;
mutable std::mutex m_glyphTexturesMutex;
drape_ptr<Texture> m_trafficArrowTexture;
drape_ptr<Texture> m_hatchingTexture;
drape_ptr<Texture> m_smaaAreaTexture;
drape_ptr<Texture> m_smaaSearchTexture;
drape_ptr<GlyphManager> m_glyphManager;
drape_ptr<HWTextureAllocator> m_textureAllocator;
buffer_vector<HybridGlyphGroup, 4> m_hybridGlyphGroups;
std::vector<drape_ptr<HWTexture>> m_texturesToCleanup;
base::Timer m_uploadTimer;
std::atomic_flag m_nothingToUpload;
std::mutex m_calcGlyphsMutex;
};
} // namespace dp
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