platform.hh

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/*
 * Dillo Widget
 *
 * Copyright 2005-2013 Sebastian Geerken <sgeerken@dillo.org>
 * Copyright 2025 Rodrigo Arias Mallo <rodarima@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#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 char *textToUpper (const char *text, int len) = 0;
 
   virtual char *textToLower (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;
 
   virtual Imgbuf *createImgbuf (Imgbuf::Type type, int width, int height,
                                 double gamma) = 0;
 
   virtual void copySelection(const char *text, int destination) = 0;
 
   virtual ui::ResourceFactory *getResourceFactory () = 0;
};
 
} // namespace core
} // namespace dw
 
#endif // __DW_PLATFORM_HH__