Prevent iconv exception in previews (#13042)

[lyx.git] / src / graphics / GraphicsImage.h

diff --git a/src/graphics/GraphicsImage.h b/src/graphics/GraphicsImage.h
index b5fd32815c9bee5c80c7bd953ebf2ad495688504..efa8e34755237f21aa993de6a7957316482ca727 100644 (file)
--- a/src/graphics/GraphicsImage.h
+++ b/src/graphics/GraphicsImage.h
@@ -1,108 +1,68 @@
 // -*- C++ -*-
 /**
- *  \file GraphicsImage.h
- *  Copyright 2002 the LyX Team
- *  Read the file COPYING
+ * \file GraphicsImage.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
  *
- *  \author Baruch Even <baruch.even@writeme.com>
- *  \author Angus Leeming <a.leeming@ic.ac.uk>
+ * \author Baruch Even
+ * \author Angus Leeming
  *
- *  An abstract base class for the images themselves.
- *  Allows the user to retrieve the pixmap, once loaded and to issue commands
- *  to modify it.
+ * Full author contact details are available in file CREDITS.
  *
- *  The signals newImage and loadableFormats are connected to the approriate
- *  derived classes elsewhere, allowing the graphics cache to access them
- *  without knowing anything about their instantiation.
+ * An abstract base class for the images themselves.
+ * Allows the user to retrieve the pixmap, once loaded and to issue commands
+ * to modify it.
  *
- *  The loading process can be asynchronous, but cropping, rotating and
- *  scaling block execution.
+ * The loading process can be asynchronous, but cropping, rotating and
+ * scaling block execution.
  */
 
 #ifndef GRAPHICSIMAGE_H
 #define GRAPHICSIMAGE_H
 
-#include "LString.h"
-#include "GraphicsTypes.h"
+namespace lyx {
 
-#include <boost/shared_ptr.hpp>
+namespace support { class FileName; }
 
-#include <sigc++/signal_system.h>
+namespace graphics {
 
-#include <X11/X.h>
+class Params;
 
-#include <vector>
-#include <utility>
-
-#ifdef __GNUG__
-#pragma interface
-#endif
-
-namespace grfx {
-
-class GParams;
-
-class GImage
-{
+class Image {
 public:
-       /// A list of supported formats.
-       typedef std::vector<string> FormatList;
-       /** This will be connected to a function that will return whichever
-        *  derived class we desire.
-        */
-       static SigC::Signal0<ImagePtr> newImage;
-
-       /// Return the list of loadable formats.
-       static SigC::Signal0<FormatList> loadableFormats;
-
        ///
-       virtual ~GImage() {}
+       virtual ~Image() {}
 
        /// Create a copy
-       virtual GImage * clone() const = 0;
-
-       ///
-       virtual Pixmap getPixmap() const = 0;
+       virtual Image * clone() const = 0;
 
        /// Get the image width
-       virtual unsigned int getWidth() const = 0;
+       virtual unsigned int width() const = 0;
 
        /// Get the image height
-       virtual unsigned int getHeight() const = 0;
+       virtual unsigned int height() const = 0;
 
-       /** At the end of the loading or modification process, return the new
-        *  image by emitting this signal */
-       typedef SigC::Signal1<void, bool> SignalType;
-       ///
-       typedef boost::shared_ptr<SignalType> SignalTypePtr;
+       /// Is the image drawable ?
+       virtual bool isDrawable() const = 0;
 
-       /// Start loading the image file.
-       virtual void load(string const & filename, SignalTypePtr) = 0;
+       /** Start loading the image file.
+        *  The caller should expect this process to be asynchronous and
+        *  so should connect to the "finished" signal above.
+        */
+       virtual bool load(support::FileName const & filename) = 0;
 
        /** Generate the pixmap.
         *  Uses the params to decide on color, grayscale etc.
         *  Returns true if the pixmap is created.
         */
-       virtual bool setPixmap(GParams const & params) = 0;
-
-       /// Clip the image using params.
-       virtual void clip(GParams const & params) = 0;
-
-       /// Rotate the image using params.
-       virtual void rotate(GParams const & params) = 0;
-
-       /// Scale the image using params.
-       virtual void scale(GParams const & params) = 0;
-
-protected:
-       /** Uses the params to ascertain the dimensions of the scaled image.
-        *  Returned as make_pair(width, height).
-        *  If something geso wrong, returns make_pair(getWidth(), getHeight())
-        */
-       std::pair<unsigned int, unsigned int>
-       getScaledDimensions(GParams const & params) const;
+       virtual bool setPixmap(Params const & params) = 0;
 };
 
-} // namespace grfx
+/// Only way to create a new Image.
+/// Implemented in the frontend.
+Image * newImage();
+
+} // namespace graphics
+} // namespace lyx
 
 #endif // GRAPHICSIMAGE_H