IFontMetricsProvider.h

// Copyright @ MyScript. All rights reserved.
 
#pragma once
 
#include <string>
#include <vector>
 
#include <iink/text/TextSpan.h>
#include <iink/text/Text.h>
#include <iink/graphics/Rectangle.h>
#include <iink/graphics/Style.h>
 
namespace myscript {
namespace iink {
namespace text {
 
struct GlyphMetrics
{
  graphics::Rectangle boundingBox; 
  float leftSideBearing;           
  float rightSideBearing;          
};
 
 
class IFontMetricsProvider
{
public:
 
  virtual ~IFontMetricsProvider() = default;
 
  virtual std::vector<myscript::iink::graphics::Rectangle> getCharacterBoundingBoxes(std::shared_ptr<Text> text, const std::vector<TextSpan>& spans) = 0;
 
  virtual float getFontSizePx(const myscript::iink::graphics::Style& style) = 0;
 
  virtual bool supportsGlyphMetrics() { return false; }
 
  virtual std::vector<GlyphMetrics> getGlyphMetrics(std::shared_ptr<Text> text, const std::vector<TextSpan>& spans) { return {}; }
};
 
} // text
} // iink
} // myscript