Forgot to add this files.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@958 a592a061-630c-0410-9148-cb99ea01b6c8

src/graphics/Renderer.C

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+// -*- C++ -*-
+/* This file is part of
+ * =================================================
+ * 
+ *          LyX, The Document Processor
+ *          Copyright 1995 Matthias Ettrich.
+ *          Copyright 1995-2000 The LyX Team.
+ *
+ *          This file Copyright 2000 Baruch Even
+ * ================================================= */
+
+#ifdef __GNUG__
+#pragma implementation
+#endif
+
+#include <config.h>
+#include "Renderer.h"
+
+#include FORMS_H_LOCATION
+#include "support/filetools.h"
+
+
+Renderer::Renderer()
+	: width_(0), height_(0), pixmapLoaded_(false)
+{}
+	
+Renderer::~Renderer()
+{
+	freePixmap();
+}
+
+bool Renderer::setFilename(string const & filename)
+{
+	// Make sure file exists and is readable.
+	if (! IsFileReadable(filename)) {
+		return false;
+	}
+	
+	// Verify that the file format is correct.
+	if (! isImageFormatOK(filename)) {
+		return false;
+	}
+			
+	filename_ = filename;
+	return true;
+}
+
+bool Renderer::renderImage()
+{
+	return false;
+}
+
+bool Renderer::isImageFormatOK(string const & /*filename*/) const
+{
+	return false;
+}
+
+void Renderer::setPixmap(Pixmap pixmap, unsigned int width, unsigned int height)
+{
+	freePixmap();
+
+	pixmap_ = pixmap;
+	width_ = width;
+	height_ = height;
+	pixmapLoaded_ = true;
+}
+
+Pixmap Renderer::getPixmap() const
+{ return pixmap_; }
+
+unsigned int Renderer::getWidth() const
+{ return width_; }
+
+unsigned int Renderer::getHeight() const
+{ return height_; }
+
+string const & Renderer::getFilename() const
+{ return filename_; }
+
+void Renderer::freePixmap()
+{
+	if (pixmapLoaded_)
+		XFreePixmap(fl_display, pixmap_);
+}

src/graphics/Renderer.h

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+// -*- C++ -*-
+/* This file is part of
+ * =================================================
+ * 
+ *          LyX, The Document Processor
+ *          Copyright 1995 Matthias Ettrich.
+ *          Copyright 1995-2000 The LyX Team.
+ *
+ *          This file Copyright 2000 Baruch Even
+ * ================================================= */
+
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include <config.h>
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include "LString.h"
+#include "X11/Xlib.h"
+#include "support/utility.hpp"
+
+/** Renderer is a base class that is used to take an image format, and render
+ * it into a Pixmap in order to be able to display it later on in LyX.
+ * Essentially it's job is to load an image format and create a Pixmap from it.
+ * It also needs to do various transforms on the image, like Rotation, 
+ * Resize and color reduction.
+ */
+class Renderer : public noncopyable {
+public:
+	/// c-tor.
+	Renderer();
+	/// d-tor.
+	virtual ~Renderer();
+
+	/// Set the filename that we will render
+	bool setFilename(string const & filename);
+
+	/// Render the image, doing the necessary transforms.
+	virtual bool renderImage() = 0;
+
+	/// Get the last rendered pixmap.
+	Pixmap getPixmap() const;
+
+	/// Get the width of the pixmap.
+	unsigned int getWidth() const;
+
+	/// Get the height of the pixmap.
+	unsigned int getHeight() const;
+
+protected:
+	/// Verify that the file is one that we can handle.
+	virtual bool isImageFormatOK(string const & filename) const = 0;
+
+	/// Set the pixmap.
+	void setPixmap(Pixmap pixmap, unsigned int width, unsigned int height);
+
+	string const & getFilename() const;
+
+private:
+	/// Free the loaded pixmap
+	void freePixmap();
+	
+	/// The filename of the image file that we are responsible for.
+	string filename_;
+	/// The last rendered pixmap.
+	Pixmap pixmap_;
+	/// The width of the rendered pixmap.
+	unsigned int width_;
+	/// The height of the rendered pixmap.
+	unsigned int height_;
+	/// is Pixmap ready?
+	bool pixmapLoaded_;
+};
+
+#endif

src/graphics/XPM_Renderer.C

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+// -*- C++ -*-
+/* This file is part of
+ * =================================================
+ * 
+ *          LyX, The Document Processor
+ *          Copyright 1995 Matthias Ettrich.
+ *          Copyright 1995-2000 The LyX Team.
+ *
+ *          This file Copyright 2000 Baruch Even
+ * ================================================= */
+
+#ifdef __GNUG__
+#pragma implementation
+#endif
+
+#include <config.h>
+#include "XPM_Renderer.h"
+
+#include FORMS_H_LOCATION
+#include XPM_H_LOCATION
+#include <iostream>
+#include <fstream>
+
+#include "support/LAssert.h"
+#include "debug.h"
+
+XPM_Renderer::XPM_Renderer()
+	: Renderer()
+{}
+
+XPM_Renderer::~XPM_Renderer()
+{}
+
+bool XPM_Renderer::renderImage()
+{
+	Pixmap pixmap;
+	Pixmap mask;
+	XpmAttributes attrib;
+	attrib.valuemask = 0;
+	
+	Display * display = fl_get_display();
+
+//(BE 2000-08-05)
+#warning This might be a dirty thing, but I dont know any other solution.
+	Screen * screen = DefaultScreenOfDisplay(display);
+
+	int status = XpmReadFileToPixmap(
+			display, 
+			XRootWindowOfScreen(screen), 
+			const_cast<char *>(getFilename().c_str()), 
+			&pixmap, &mask, &attrib);
+
+	if (status != XpmSuccess) {
+		lyxerr << "Error reading XPM file '" 
+			<< XpmGetErrorString(status) 
+			<< endl;
+		return false;
+	}
+	
+	// This should have been set by the XpmReadFileToPixmap call!
+	Assert(attrib.valuemask & XpmSize);
+
+	setPixmap(pixmap, attrib.width, attrib.height);
+
+	XpmFreeAttributes(&attrib);
+
+	return true;
+}
+
+bool XPM_Renderer::isImageFormatOK(string const & filename) const
+{
+	std::ifstream is(filename.c_str(), ios::in | ios::nocreate);
+
+	// The signature of the file without the spaces.
+	static const char str[] = "/*XPM*/";
+	const char * ptr = str;
+
+	do {
+		char c;
+		is >> c;
+
+		if (c != *ptr)
+			return false;
+		
+		++ptr;
+	} while (*ptr != '\0');
+
+	return true;
+}

src/graphics/XPM_Renderer.h

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+// -*- C++ -*-
+/* This file is part of
+ * =================================================
+ * 
+ *          LyX, The Document Processor
+ *          Copyright 1995 Matthias Ettrich.
+ *          Copyright 1995-2000 The LyX Team.
+ *
+ *          This file Copyright 2000 Baruch Even
+ * ================================================= */
+
+#ifndef XPM_RENDERER_H
+#define XPM_RENDERER_H
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include "graphics/Renderer.h"
+
+class XPM_Renderer : public Renderer {
+public:
+	/// c-tor.
+	XPM_Renderer();
+	/// d-tor.
+	virtual ~XPM_Renderer();
+
+	/// Load the XPM image and create a pixmap out of it.
+	virtual bool renderImage();
+
+private:
+	/// Verify that filename is really an XPM file.
+	virtual bool isImageFormatOK(string const & filename) const;
+};
+
+#endif