Baruch's graphic-inset patch.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@957 a592a061-630c-0410-9148-cb99ea01b6c8

ChangeLog

@@ -1,3 +1,18 @@
+2000-08-07  Baruch Even  <baruch.even@writeme.com>
+
+	* src/graphics/Renderer.h:
+	* src/graphics/Renderer.C: Added base class for rendering of different
+	image formats into Pixmaps.
+
+	* src/graphics/XPM_Renderer.h:
+	* src/graphics/XPM_Renderer.C: Taken from GraphicsCacheItem and placed
+	in a different class.
+
+	* src/graphics/GraphicsCacheItem.C: factored out the rendering in order to
+	easily add support for other formats.
+
+	* src/insets/figinset.C: plugged a leak of an X resource.
+
 2000-08-07  Lars Gullik Bjønnes  <larsbj@lyx.org>
 
 	* src/CutAndPaste.[Ch]: make all metods static. 
@@ -50,6 +65,24 @@
 
 	* src/tabular.C (UseParbox): new function
 
+2000-08-06  Baruch Even  <baruch.even@writeme.com>
+
+	* src/graphics/GraphicsCache.h:
+	* src/graphics/GraphicsCache.C:
+	* src/graphics/GraphicsCacheItem.h:
+	* src/graphics/GraphicsCacheItem.C: Made them to actually do something
+	usefull.
+
+	* src/insets/insetgraphics.h:
+	* src/insets/insetgraphics.C: Added the use of the GraphicsCache and the
+	drawing of the inline image.
+
+	* src/buffer.C: Fixed a bug where a loaded InsetGraphics would be loaded 
+	into the wrong position.
+
+	* src/lyxfunc.C: When adding an InsetGraphics the edit dialog is now
+	launched.
+
 2000-08-05  Lars Gullik Bjønnes  <larsbj@lyx.org>
 
 	* src/support/translator.h: move all typedefs to public section

src/buffer.C

@@ -1039,8 +1039,8 @@ void Buffer::readInset(LyXLex & lex, LyXParagraph *& par,
 	} else if (tmptok == "GRAPHICS") {
 		Inset * inset = new InsetGraphics;
 		inset->Read(this, lex);
-		++pos;
 		par->InsertInset(pos, inset, font);
+		++pos;
 	} else if (tmptok == "LatexCommand") {
 		InsetCommandParams inscmd;
 		inscmd.Read(lex);

src/frontends/xforms/FormGraphics.C

@@ -14,6 +14,7 @@
 #endif
 
 #include <config.h>
+
 #include "lyx_gui_misc.h"
 #include "gettext.h"
 #include FORMS_H_LOCATION
@@ -517,3 +518,4 @@ void FormGraphics::InputCB(FL_OBJECT * ob, long)
     FormGraphics * pre = static_cast<FormGraphics*>(ob->form->u_vdata);
 	pre->input();
 }
+

src/frontends/xforms/FormGraphics.h

@@ -19,6 +19,7 @@
 #define FORMGRAPHICS_H
 
 #include <config.h>
+
 #include "LString.h"
 #include "frontends/DialogBase.h"
 //#include "form_graphics.h"
@@ -154,5 +155,3 @@ private:
 };
 
 #endif
-
-

src/frontends/xforms/form_graphics.C

@@ -1,5 +1,6 @@
 // File modified by fdfix.sh for use by lyx (with xforms >= 0.88) and gettext
 #include <config.h>
+
 #include "lyx_gui_misc.h"
 #include "gettext.h"
 
@@ -102,4 +103,3 @@ FD_form_graphics * FormGraphics::build_graphics()
   return fdui;
 }
 /*---------------------------------------*/
-

src/graphics/GraphicsCache.C

@@ -17,6 +17,7 @@
 
 #include "GraphicsCache.h"
 
+#include "support/LAssert.h"
 
 GraphicsCache * GraphicsCache::singleton = 0;
 
@@ -26,6 +27,7 @@ GraphicsCache::getInstance()
 {
     if (! singleton) {
         singleton = new GraphicsCache;
+		Assert(singleton != 0);
     }
 
     return singleton;
@@ -34,7 +36,13 @@ GraphicsCache::getInstance()
 
 GraphicsCache::~GraphicsCache()
 {
-        delete singleton;
+	// Free the map.
+	//std::foreach(map.begin(), map.end(), ...);
+	// This is not really needed, it will only happen on program close and in
+	// any case the OS will release those resources (not doing it may have 
+	// a good effect on closing time).
+
+    delete singleton;
 }
 
 
@@ -46,8 +54,19 @@ GraphicsCache::addFile(string const & filename)
     if (it != cache.end()) {
         return (*it).second;
     }
-    // INCOMPLETE!
-    return 0;
+	
+	GraphicsCacheItem * cacheItem = new GraphicsCacheItem();
+	if (cacheItem == 0) {
+		return 0;
+	}
+
+	bool result = cacheItem->setFilename(filename);
+	if (!result) 
+		return 0;
+
+	cache[filename] = cacheItem;
+	
+    return cacheItem;
 }
 
 

src/graphics/GraphicsCache.h

@@ -52,5 +52,10 @@ private:
     typedef std::map<string, GraphicsCacheItem *> CacheType;
     ///
     CacheType cache;
+
+	// We need this so that an Item can tell the cache that it should be
+	// deleted. (to call removeFile).
+	// It also helps removing a warning gcc emits.
+	friend GraphicsCacheItem;
 };
 #endif

src/graphics/GraphicsCacheItem.C

@@ -17,3 +17,131 @@
 
 #include "GraphicsCacheItem.h"
 
+#include "graphics/XPM_Renderer.h"
+#include "support/filetools.h"
+#include "debug.h"
+#include "support/LAssert.h"
+#include <unistd.h> // unlink
+
+#include <map>
+
+#include FORMS_H_LOCATION
+
+using std::endl;
+
+GraphicsCacheItem::GraphicsCacheItem()
+	: height_(-1), width_(-1), imageStatus_(Loading),
+	  pixmap_(0), renderer(0)
+{}
+
+GraphicsCacheItem::~GraphicsCacheItem()
+{
+	if (imageStatus_ == Loaded) {
+		XFreePixmap(fl_display, pixmap_);
+	}
+
+	delete renderer;
+}
+
+bool
+GraphicsCacheItem::setFilename(string const & filename)
+{
+	imageStatus_ = Loading;
+
+	renderer = new XPM_Renderer();
+	if (renderXPM(filename))
+		return true;
+	
+	return false;
+}
+
+/*** Callback method ***/
+
+typedef map<string, GraphicsCacheItem*> CallbackMap;
+static CallbackMap callbackMap;
+
+void
+callback(string cmd, int retval)
+{
+	lyxerr << "callback, cmd="<<cmd<<", retval="<<retval<<endl;
+
+	GraphicsCacheItem * item = callbackMap[cmd];
+	callbackMap.erase(cmd);
+	
+	item->imageConverted(retval);
+}
+
+void
+GraphicsCacheItem::imageConverted(int retval)
+{
+	lyxerr << "imageConverted, retval="<<retval<<endl;
+
+	if (retval) {
+		imageStatus_ = ErrorConverting;
+		return;
+	}
+
+	// Do the actual image loading from XPM to memory.
+	loadXPMImage();	
+}
+
+/**********************/
+
+bool
+GraphicsCacheItem::renderXPM(string const & filename)
+{
+	// Create the command to do the conversion, this depends on ImageMagicks
+	// convert program.
+	string command = "convert ";
+	command += filename;
+	command += " XPM:";
+
+	// Take only the filename part of the file, without path or extension.
+	string temp = OnlyFilename(filename);
+	temp = ChangeExtension(filename , string());
+	
+	// Add some stuff to have it a unique temp file.
+	xpmfile = TmpFileName(string(), temp);
+	xpmfile = ChangeExtension(xpmfile, ".xpm");	
+	
+	command += xpmfile;
+
+	// Set the callback mapping to point to us.
+	callbackMap[command] = this;
+
+	// Run the convertor.
+	// There is a problem with running it asyncronously, it doesn't return
+	// to call the callback, so until the Systemcalls mechanism is fixed
+	// I use the syncronous method.
+	lyxerr << "Launching convert to xpm, command="<<command<<endl;
+//	syscall.startscript(Systemcalls::DontWait, command, &callback);
+	syscall.startscript(Systemcalls::Wait, command, &callback);
+
+	return true;
+}
+
+// This function gets called from the callback after the image has been
+// converted successfully.
+void
+GraphicsCacheItem::loadXPMImage()
+{
+	if (! renderer->setFilename(xpmfile)) {
+		return;
+	}
+
+	if (renderer->renderImage()) {
+		pixmap_ = renderer->getPixmap();
+		width_ = renderer->getWidth();
+		height_ = renderer->getHeight();
+		imageStatus_ = Loaded;
+	} else {
+		imageStatus_ = ErrorReading;
+	}
+
+	imageDone.emit();
+
+	// remove the xpm file now.
+	::unlink(xpmfile.c_str());
+	// and remove the reference to the filename.
+	xpmfile = string();
+}

src/graphics/GraphicsCacheItem.h

@@ -12,18 +12,103 @@
 #ifndef GRAPHICSCACHEITEM_H
 #define GRAPHICSCACHEITEM_H
 
+#include <config.h>
+
 #ifdef __GNUG__
 #pragma interface
 #endif
 
-///
+#include XPM_H_LOCATION
+#include "LString.h"
+#include "graphics/Renderer.h"
+#include "support/syscall.h"
+
+#include "sigc++/signal_system.h"
+#ifdef SIGC_CXX_NAMESPACES
+using SigC::Signal0;
+#endif
+
+/* (Baruch Even 2000-08-05)
+ * This has a major drawback: it is only designed for X servers, no easy
+ * porting to non X-server based platform is offered right now, this is done
+ * in order to get a first version out of the door.
+ *
+ * Later versions should consider how to do this with more platform 
+ * independence, this will probably involve changing the Painter class too.
+ */
+
+/* (Baruch Even 2000-08-05)
+ * This should be made reference counted, but for the sake of initial design
+ * I'll forego that and just make a first version that actually works, though
+ * it may fail or leak in real document, this is an initial design to try
+ * ideas on and be a testbed.
+ * It may just as well be scraped later on to create a better design based on
+ * the results of working with the current design.
+ */
+
+/// A GraphicsCache item holder.
 class GraphicsCacheItem {
 public:
+	/// d-tor, frees the image structures.
+	~GraphicsCacheItem();
+	
+	/// Get the height of the image. Returns -1 on error.
+	int getHeight() const { return height_; }	
+	
+	/// Get the width of the image. Returns -1 on error.
+	int getWidth() const { return width_; }
+
+	/// Return a pixmap that can be displayed on X server.
+	Pixmap getImage() const { return pixmap_; }
+
+	enum ImageStatus {
+		Loading = 1,
+		ErrorConverting,
+		ErrorReading,
+		Loaded
+	};
+	
+	/// Is the pixmap ready for display?
+	ImageStatus getImageStatus() const { return imageStatus_; }
+
+	/// Get a notification when the image conversion is done.
+	/// used by an internal callback mechanism.
+	void imageConverted(int retval);
+
+	/// A signal objects can connect to in order to know when the image
+	/// has arrived.
+	Signal0<void> imageDone;
 private:
-    ///
-    GraphicsCacheItem() {}
+    /// Private c-tor so that only GraphicsCache can create an instance.
+    GraphicsCacheItem();
+
+	/// Set the filename this item will be pointing too.
+	bool setFilename(string const & filename);
+
+	/// Create an XPM file version of the image.
+	bool renderXPM(string const & filename);
+
+	/// Load the image from XPM to memory Pixmap
+	void loadXPMImage();
+	
     ///
     friend class GraphicsCache;
+
+	/// The file name of the XPM file.
+	string xpmfile;
+	/// The image height
+	int height_;
+	/// The image width
+	int width_;
+	/// Is the pixmap loaded?
+	ImageStatus imageStatus_;
+	/// The image pixmap
+	Pixmap pixmap_;
+	/// The rendering object.
+	Renderer * renderer;
+
+	/// The system caller, runs the convertor.
+	Systemcalls syscall;
 };
 
 #endif

src/graphics/Makefile.am

@@ -7,6 +7,10 @@ ETAGS_ARGS = --lang=c++
 INCLUDES = -I${srcdir}/../ $(SIGC_CFLAGS)
 
 libgraphics_la_SOURCES = \
+	Renderer.h \
+	Renderer.C \
+	XPM_Renderer.h \
+	XPM_Renderer.C \
 	GraphicsCache.h \
 	GraphicsCache.C \
 	GraphicsCacheItem.h \

src/insets/figinset.C

@@ -592,6 +592,8 @@ void runqueue()
 								prop[i]);
 					if (strcmp(p, "GHOSTVIEW") == 0) {
 						err = false;
+						// We free it when we leave so we don't leak.
+						XFree(p);
 						break;
 					}
 					XFree(p);

src/insets/insetgraphics.C

@@ -43,10 +43,13 @@ Current PROBLEMS:
         graphicx package docs it appears that it takes quite a bit of memory
         on the side of TeXing.
 	
+	* How do we handle the inline viewing? we may need to show the same image
+		in several formats (color, monochrome, grayscale) or even in different
+		sizes, not to mention rotations!
+		
 TODO Basics:
 
-    * Add support for more features so that it will be useable as a drop in
-      replacement to insetfig.
+    * Add support for more features so that it will be better than insetfig.
         * Keep aspect ratio radio button
 
     * Create the GraphicsCache and FormatTranslator
@@ -80,6 +83,9 @@ TODO Extended features:
     * If the dialog had no real change from previous time, do not mark document
         as changed.
     * Keep a tab on the image file, if it changes, update the lyx view.
+	* The image choosing dialog could show thumbnails of the image formats
+		it knows of, thus selection based on the image instead of based on
+		filename.
  */
 
 /* NOTES:
@@ -146,6 +152,7 @@ TODO Extended features:
  *          transferring the file around.
  */
 
+ 
 #ifdef __GNUG__
 #pragma implementation
 #endif
@@ -180,6 +187,7 @@ InsetGraphics::InsetGraphics()
       : use_bb(false), hiresbb(false), angle(0.0), origin(DEFAULT)
       ,keepaspectratio(false), scale(0.0), clip(false), draft(false) 
 #endif     
+	: cachehandle(0), bv_(0)
 {}
 
 InsetGraphics::~InsetGraphics()
@@ -190,27 +198,28 @@ InsetGraphics::~InsetGraphics()
 
 int InsetGraphics::ascent(BufferView *, LyXFont const &) const 
 {
-	
-	return 25;
+	if (cachehandle && 
+			cachehandle->getImageStatus() == GraphicsCacheItem::Loaded)
+		return cachehandle->getHeight();
+	else
+		return 50;
 }
 
 
 int InsetGraphics::descent(BufferView *, LyXFont const &) const 
 {
 	// this is not true if viewport is used and clip is not.
-	return 25;
+	return 0;
 }
 
 
 int InsetGraphics::width(BufferView *, LyXFont const &) const 
 {
-    // Need to replace this with data coming from GraphicsCache
-#ifdef IG_OLDPARAMS    
-	if (bb.isSet()) {
-		return bb.urx - bb.llx + 2;
-	}
-#endif    
-	return 50;
+	if (cachehandle && 
+			cachehandle->getImageStatus() == GraphicsCacheItem::Loaded)
+		return cachehandle->getWidth();
+	else
+		return 50;
 }
 
 
@@ -219,16 +228,30 @@ void InsetGraphics::draw(BufferView * bv, LyXFont const & font,
 {
 	Painter & paint = bv->painter();
 
+
 	// This will draw the graphics. As for now we only draw a
 	// placeholder rectangele.
-	paint.rectangle(int(x)+2, baseline - ascent(bv, font),
+	if (cachehandle && 
+			cachehandle->getImageStatus() == GraphicsCacheItem::Loaded) {
+
+		paint.pixmap(int(x)+2, baseline - ascent(bv, font),
+			    width(bv, font) - 4, 
+				ascent(bv,font) + descent(bv,font), 
+				cachehandle->getImage());
+	} else { 
+		paint.rectangle(int(x)+2, baseline - ascent(bv, font),
 		       width(bv, font) - 4,
 		       ascent(bv, font) + descent(bv, font));
+
+	}
+
+	x += width(bv, font);
 }
 
 
 void InsetGraphics::Edit(BufferView *bv, int, int, unsigned int)
 {
+	bv_ = bv;
     bv->owner()->getDialogs() -> showGraphics(this);
 }
 
@@ -241,7 +264,7 @@ Inset::EDITABLE InsetGraphics::Editable() const
 
 void InsetGraphics::Write(Buffer const * buf, ostream & os) const
 {
-	os << "Graphics FormatVersion 1" << endl;
+	os << "GRAPHICS FormatVersion 1" << endl;
 
     params.Write(buf, os);
 }
@@ -606,16 +629,30 @@ void InsetGraphics::Validate(LaTeXFeatures & features) const
 void InsetGraphics::updateInset()
 {
     // If file changed...
-	//graphicscache.addFile(params.filename);
-	//bb = graphicscache.getBB(params.filename);
-	//pixmap = graphicscache.getPixmap(params.filename);
+
+	GraphicsCache * gc = GraphicsCache::getInstance();
+	GraphicsCacheItem * temp = 0;
+
+	if (!params.filename.empty()) {
+		temp = gc->addFile(params.filename);
+		if (temp)
+			temp->imageDone.connect(slot(this, &InsetGraphics::imageDone));
+	}
+
+	delete cachehandle;
+	cachehandle = temp;
+	
+}
+
+void InsetGraphics::imageDone()
+{
+	if (bv_)
+		bv_->updateInset(this, false);
 }
 
 bool InsetGraphics::setParams(InsetGraphicsParams const & params)
 {
-    // TODO: Make it return true only when the data has been changed.
-    // for this to work we still need to implement operator == in 
-    // InsetGraphicsParams
+	// If nothing is changed, just return and say so.
     if (this->params == params)
         return false;
 

src/insets/insetgraphics.h

@@ -12,10 +12,13 @@
 #ifndef INSET_GRAPHICS_H
 #define INSET_GRAPHICS_H
 
+
 #ifdef __GNUG__
 #pragma interface
 #endif
 
+#include <config.h>
+
 #include "insets/lyxinset.h"
 #include "insets/insetgraphicsParams.h"
 
@@ -25,13 +28,19 @@
 #include "sigc++/signal_system.h"
 #ifdef SIGC_CXX_NAMESPACES
 using SigC::Signal0;
+using SigC::slot;
+using SigC::Object;
 #endif
 
 class Dialogs;
 class GraphicsCacheItem;
 
 ///
-class InsetGraphics : public Inset {
+#ifdef SIGC_CXX_NAMESPACES
+class InsetGraphics : public Inset, public SigC::Object {
+#else
+class InsetGraphics : public Inset, public Object {
+#endif
 public:
 	///
 	InsetGraphics();
@@ -94,9 +103,14 @@ private:
     /// Update the inset after parameter change.
     void updateInset();
 
+	/// Get notified when the inline image processing has finished.
+	void imageDone();
+
     /// The graphics cache handle.
     GraphicsCacheItem * cachehandle;
 
+	/// Holds the buffer view that we are associated with.
+	BufferView * bv_;
 
     InsetGraphicsParams params;
 

src/insets/insetgraphicsParams.C

@@ -9,19 +9,19 @@
  *          This file Copyright 2000 Baruch Even
  * ================================================= */
 
+
 #ifdef __GNUG__
 #pragma implementation
 #endif
 
 #include <config.h>
+
 #include "insetgraphicsParams.h"
 
 #include "support/translator.h"
 #include "support/filetools.h"
 
-#ifdef ENABLE_ASSERTIONS
 #include "support/LAssert.h"
-#endif
 
 using std::endl;
 
@@ -120,9 +120,7 @@ void InsetGraphicsParams::init()
     rotateOrigin = DEFAULT;
     rotateAngle = 0;
 
-#ifdef ENABLE_ASSERTION
     testInvariant();
-#endif
 }
 
 void InsetGraphicsParams::copy(InsetGraphicsParams const & igp)
@@ -140,14 +138,11 @@ void InsetGraphicsParams::copy(InsetGraphicsParams const & igp)
     rotateOrigin = igp.rotateOrigin;
     rotateAngle = igp.rotateAngle;
 
-#ifdef ENABLE_ASSERTIONS
     testInvariant();
-#endif    
 }
 
 void InsetGraphicsParams::testInvariant() const
 {
-#ifdef ENABLE_ASSERTIONS
     // Filename might be empty (when the dialog is first created).
     // Assert(!filename.empty());
     
@@ -180,7 +175,6 @@ void InsetGraphicsParams::testInvariant() const
     Assert(rotateAngle <  360);
     Assert(rotateAngle > -360);
 
-#endif
 }
 
 bool operator==(InsetGraphicsParams const & left, 

src/insets/insetgraphicsParams.h

@@ -17,6 +17,7 @@
 #endif
 
 #include <config.h>
+
 #include "LString.h"
 
 #include "buffer.h"

src/lyxfunc.C

@@ -946,8 +946,9 @@ string LyXFunc::Dispatch(int ac,
 		if (!owner->view()->insertInset(new_inset)) {
 			delete new_inset;
 		} else {
-		    // this is need because you don't use a inset->Edit()
-		    owner->view()->updateInset(new_inset, true);
+			// this is need because you don't use a inset->Edit()
+			owner->view()->updateInset(new_inset, true);
+			new_inset->Edit(owner->view(), 0, 0, 0);
 		}
 		break;
 	}

src/support/translator.h

@@ -12,12 +12,13 @@
 #ifndef TRANSLATOR_H
 #define TRANSLATOR_H
 
-
 #include <vector>
 #include <utility>
 #include <algorithm>
 #include <functional>
 
+#include "support/LAssert.h"
+
 // Functors used in the template.
 template<typename T1, typename T2>
 class equal_1st_in_pair {
@@ -72,9 +73,7 @@ public:
 
     /// Find the mapping for the first argument
     T2 const & find(T1 const & first) const {
-#ifdef ENABLE_ASSERTIONS
         Assert( ! map.empty());
-#endif
 
         // For explanation see the next find() function.
         Map::const_iterator it =
@@ -91,9 +90,7 @@ public:
 
     /// Find the mapping for the second argument
     T1 const & find(T2 const & second) const {
-#ifdef ENABLE_ASSERTIONS
         Assert( ! map.empty());
-#endif
 
         // The idea is as follows:
         // find_if() will try to compare the data in the vector with the value.