dw/platform.hh

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#ifndef __DW_PLATFORM_HH__
#define __DW_PLATFORM_HH__

#ifndef __INCLUDED_FROM_DW_CORE_HH__
#   error Do not include this file directly, use "core.hh" instead.
#endif

namespace dw {
namespace core {

class Platform: public lout::object::Object
{
public:
   /*
    * -----------------------------------
    *    General
    * -----------------------------------
    */

   virtual void setLayout (Layout *layout) = 0;

   /*
    * -------------------------
    *    Operations on views
    * -------------------------
    */

   virtual void attachView (View *view) = 0;

   virtual void detachView  (View *view) = 0;

   /*
    * -----------------------------------
    *    Platform dependent properties
    * -----------------------------------
    */

   virtual int textWidth (style::Font *font, const char *text, int len) = 0;

   virtual int nextGlyph (const char *text, int idx) = 0;

   virtual int prevGlyph (const char *text, int idx) = 0;

   virtual float dpiX () = 0;

   virtual float dpiY () = 0;

   /*
    * ---------------------------------------------------------
    *    These are to encapsulate some platform dependencies
    * ---------------------------------------------------------
    */

   virtual int addIdle (void (Layout::*func) ()) = 0;

   virtual void removeIdle (int idleId) = 0;

   /*
    * ---------------------
    *    Style Resources
    * ---------------------
    */

   virtual style::Font *createFont (style::FontAttrs *attrs,
                                    bool tryEverything) = 0;

   virtual bool fontExists (const char *name) = 0;

   virtual style::Color *createColor (int color) = 0;

   virtual style::Tooltip *createTooltip (const char *text) = 0;

   virtual void cancelTooltip () = 0;

   /*
    * --------------------
    *    Image Buffers
    * --------------------
    */
   virtual Imgbuf *createImgbuf (Imgbuf::Type type, int width, int height) = 0;

   virtual void copySelection(const char *text) = 0;

   virtual ui::ResourceFactory *getResourceFactory () = 0;
};

} // namespace dw
} // namespace core

#endif // __DW_PLATFORM_HH__

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