initial work, plugging in a LaTeX renderer to write the text stuff to a .tex file...

diff --git a/src/extension/internal/CMakeLists.txt b/src/extension/internal/CMakeLists.txt
index c9c00e05b98071f830b4c0c7bf6d4f93bea5b65a..3412b740c76f4ee883547817001e96e08f40cd2f 100644 (file)
--- a/src/extension/internal/CMakeLists.txt
+++ b/src/extension/internal/CMakeLists.txt
@@ -20,6 +20,7 @@ latex-pstricks.cpp
 latex-pstricks-out.cpp
 odf.cpp
 pdfinput
+pdflatex-renderer.cpp
 pdf-input-cairo.cpp
 pov-out.cpp
 javafx-out.cpp

diff --git a/src/extension/internal/Makefile_insert b/src/extension/internal/Makefile_insert
index d2ba9b3eb6c3e4c3f2e8395c9bd20f0e5d37948a..881b3ec22e6f723ae4f13cb7bd0d4f038b2fa110 100644 (file)
--- a/src/extension/internal/Makefile_insert
+++ b/src/extension/internal/Makefile_insert
@@ -109,6 +109,8 @@ ink_common_sources +=       \
        extension/internal/javafx-out.h \
        extension/internal/gdkpixbuf-input.h    \
        extension/internal/gdkpixbuf-input.cpp  \
+       extension/internal/pdflatex-renderer.h \
+       extension/internal/pdflatex-renderer.cpp \
        extension/internal/pdfinput/svg-builder.h \
        extension/internal/pdfinput/svg-builder.cpp \
        extension/internal/pdfinput/pdf-parser.h \

diff --git a/src/extension/internal/cairo-renderer-pdf-out.cpp b/src/extension/internal/cairo-renderer-pdf-out.cpp
index a62d2cb14b3f853356c8768466149b7002925b5d..ba23f4bcc4898e20bba0bf4ebd74d02de88910e2 100644 (file)
--- a/src/extension/internal/cairo-renderer-pdf-out.cpp
+++ b/src/extension/internal/cairo-renderer-pdf-out.cpp
@@ -20,6 +20,7 @@
 #include "cairo-renderer-pdf-out.h"
 #include "cairo-render-context.h"
 #include "cairo-renderer.h"
+#include "pdflatex-renderer.h"
 #include <print.h>
 #include "extension/system.h"
 #include "extension/print.h"
@@ -33,6 +34,8 @@
 #include "sp-item.h"
 #include "sp-root.h"
 
+#include <2geom/matrix.h>
+
 namespace Inkscape {
 namespace Extension {
 namespace Internal {
@@ -48,7 +51,7 @@ CairoRendererPdfOutput::check (Inkscape::Extension::Extension * module)
 
 static bool
 pdf_render_document_to_file(SPDocument *doc, gchar const *filename, unsigned int level,
-                            bool texttopath, bool texttolatex, bool filtertobitmap, int resolution,
+                            bool texttopath, bool omittext, bool filtertobitmap, int resolution,
                             const gchar * const exportId, bool exportDrawing, bool exportCanvas)
 {
     sp_document_ensure_up_to_date(doc);
@@ -83,7 +86,7 @@ pdf_render_document_to_file(SPDocument *doc, gchar const *filename, unsigned int
     CairoRenderContext *ctx = renderer->createContext();
     ctx->setPDFLevel(level);
     ctx->setTextToPath(texttopath);
-    renderer->_omitText = texttolatex;
+    renderer->_omitText = omittext;
     ctx->setFilterToBitmap(filtertobitmap);
     ctx->setBitmapResolution(resolution);
 
@@ -107,6 +110,45 @@ pdf_render_document_to_file(SPDocument *doc, gchar const *filename, unsigned int
     return ret;
 }
 
+static bool
+latex_render_document_text_to_file( SPDocument *doc, gchar const *filename, 
+                                    const gchar * const exportId, bool exportDrawing, bool exportCanvas)
+{
+    sp_document_ensure_up_to_date(doc);
+
+/* Start */
+
+    SPItem *base = NULL;
+
+    bool pageBoundingBox = true;
+    if (exportId && strcmp(exportId, "")) {
+        // we want to export the given item only
+        base = SP_ITEM(doc->getObjectById(exportId));
+        pageBoundingBox = exportCanvas;
+    }
+    else {
+        // we want to export the entire document from root
+        base = SP_ITEM(sp_document_root(doc));
+        pageBoundingBox = !exportDrawing;
+    }
+
+    if (!base)
+        return false;
+
+    /* Create renderer */
+    PDFLaTeXRenderer *renderer = new PDFLaTeXRenderer();
+
+    /* Render document */
+    bool ret = renderer->setupDocument(doc, pageBoundingBox, base);
+    if (ret) {
+        renderer->renderItem(base);
+    }
+
+    delete renderer;
+
+    return ret;
+}
+
 
 /**
     \brief  This function calls the output module with the filename
@@ -195,15 +237,29 @@ CairoRendererPdfOutput::save(Inkscape::Extension::Output *mod, SPDocument *doc,
         g_warning("Parameter <exportCanvas> might not exist");
     }
 
-    gchar * final_name;
-    final_name = g_strdup_printf("> %s", filename);
-    ret = pdf_render_document_to_file(doc, final_name, level,
-                                      new_textToPath, new_textToLaTeX, new_blurToBitmap, new_bitmapResolution,
-                                      new_exportId, new_exportDrawing, new_exportCanvas);
-    g_free(final_name);
+    // Create PDF file
+    {
+        gchar * final_name;
+        final_name = g_strdup_printf("> %s", filename);
+        ret = pdf_render_document_to_file(doc, final_name, level,
+                                          new_textToPath, new_textToLaTeX, new_blurToBitmap, new_bitmapResolution,
+                                          new_exportId, new_exportDrawing, new_exportCanvas);
+        g_free(final_name);
+
+        if (!ret)
+            throw Inkscape::Extension::Output::save_failed();
+    }
+
+    // Create LaTeX file (if requested)
+    if (new_textToLaTeX) {
+        gchar * tex_filename;
+        tex_filename = g_strdup_printf("%s.tex", filename);
+        ret = latex_render_document_text_to_file(doc, tex_filename, new_exportId, new_exportDrawing, new_exportCanvas);
+        g_free(tex_filename);
 
-    if (!ret)
-        throw Inkscape::Extension::Output::save_failed();
+        if (!ret)
+            throw Inkscape::Extension::Output::save_failed();
+    }
 }
 
 #include "clear-n_.h"

diff --git a/src/extension/internal/cairo-renderer.cpp b/src/extension/internal/cairo-renderer.cpp
index 6d75c1e5dc921d2a671a7425a64d01f145fb4a86..6e4bb3b7e366e8438c235ab21853627eb707c875 100644 (file)
--- a/src/extension/internal/cairo-renderer.cpp
+++ b/src/extension/internal/cairo-renderer.cpp
@@ -598,6 +598,8 @@ CairoRenderer::renderItem(CairoRenderContext *ctx, SPItem *item)
 bool
 CairoRenderer::setupDocument(CairoRenderContext *ctx, SPDocument *doc, bool pageBoundingBox, SPItem *base)
 {
+// PLEASE note when making changes to the boundingbox and transform calculation, corresponding changes should be made to PDFLaTeXRenderer::setupDocument !!!
+
     g_assert( ctx != NULL );
 
     if (!base)

diff --git a/src/extension/internal/pdflatex-renderer.cpp b/src/extension/internal/pdflatex-renderer.cpp
new file mode 100644 (file)
index 0000000..bcababf
--- /dev/null
+++ b/src/extension/internal/pdflatex-renderer.cpp
@@ -0,0 +1,428 @@
+#define EXTENSION_INTERNAL_PDF_LATEX_RENDERER_CPP
+
+/** \file
+ * Rendering LaTeX file (pdf+latex output)
+ */
+/*
+ * Authors:
+ *   Johan Engelen <goejendaagh@zonnet.nl>
+ *   Miklos Erdelyi <erdelyim@gmail.com>
+ *
+ * Copyright (C) 2006-2010 Authors
+ *
+ * Licensed under GNU GPL
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifndef PANGO_ENABLE_BACKEND
+#define PANGO_ENABLE_BACKEND
+#endif
+
+#ifndef PANGO_ENABLE_ENGINE
+#define PANGO_ENABLE_ENGINE
+#endif
+
+
+#include <signal.h>
+#include <errno.h>
+
+#include "libnr/nr-rect.h"
+#include "libnrtype/Layout-TNG.h"
+#include <2geom/transforms.h>
+#include <2geom/pathvector.h>
+
+#include <glib/gmem.h>
+
+#include <glibmm/i18n.h>
+#include "display/nr-arena.h"
+#include "display/nr-arena-item.h"
+#include "display/nr-arena-group.h"
+#include "display/curve.h"
+#include "display/canvas-bpath.h"
+#include "sp-item.h"
+#include "sp-item-group.h"
+#include "style.h"
+#include "marker.h"
+#include "sp-linear-gradient.h"
+#include "sp-radial-gradient.h"
+#include "sp-root.h"
+#include "sp-use.h"
+#include "sp-text.h"
+#include "sp-flowtext.h"
+#include "sp-mask.h"
+#include "sp-clippath.h"
+
+#include <unit-constants.h>
+#include "helper/png-write.h"
+#include "helper/pixbuf-ops.h"
+
+#include "pdflatex-renderer.h"
+#include "extension/system.h"
+
+#include "io/sys.h"
+
+#include <cairo.h>
+
+// include support for only the compiled-in surface types
+#ifdef CAIRO_HAS_PDF_SURFACE
+#include <cairo-pdf.h>
+#endif
+#ifdef CAIRO_HAS_PS_SURFACE
+#include <cairo-ps.h>
+#endif
+
+//#define TRACE(_args) g_printf _args
+#define TRACE(_args)
+//#define TEST(_args) _args
+#define TEST(_args)
+
+// FIXME: expose these from sp-clippath/mask.cpp
+struct SPClipPathView {
+    SPClipPathView *next;
+    unsigned int key;
+    NRArenaItem *arenaitem;
+    NRRect bbox;
+};
+
+struct SPMaskView {
+    SPMaskView *next;
+    unsigned int key;
+    NRArenaItem *arenaitem;
+    NRRect bbox;
+};
+
+namespace Inkscape {
+namespace Extension {
+namespace Internal {
+
+PDFLaTeXRenderer::PDFLaTeXRenderer(void)
+  : _m(Geom::identity())
+{}
+
+PDFLaTeXRenderer::~PDFLaTeXRenderer(void)
+{
+    /* restore default signal handling for SIGPIPE */
+#if !defined(_WIN32) && !defined(__WIN32__)
+    (void) signal(SIGPIPE, SIG_DFL);
+#endif
+
+    return;
+}
+
+void
+PDFLaTeXRenderer::sp_group_render(SPItem *item)
+{
+    SPGroup *group = SP_GROUP(item);
+
+    GSList *l = g_slist_reverse(group->childList(false));
+    while (l) {
+        SPObject *o = SP_OBJECT (l->data);
+        if (SP_IS_ITEM(o)) {
+            renderItem (SP_ITEM (o));
+        }
+        l = g_slist_remove (l, o);
+    }
+}
+
+void
+PDFLaTeXRenderer::sp_use_render(SPItem *item)
+{
+/*
+    bool translated = false;
+    SPUse *use = SP_USE(item);
+
+    if ((use->x._set && use->x.computed != 0) || (use->y._set && use->y.computed != 0)) {
+        Geom::Matrix tp(Geom::Translate(use->x.computed, use->y.computed));
+        ctx->pushState();
+        ctx->transform(&tp);
+        translated = true;
+    }
+
+    if (use->child && SP_IS_ITEM(use->child)) {
+        renderItem(SP_ITEM(use->child));
+    }
+
+    if (translated) {
+        ctx->popState();
+    }
+*/
+}
+
+void
+PDFLaTeXRenderer::sp_text_render(SPItem *item)
+{
+    SPText *group = SP_TEXT (item);
+/*
+implement
+*/
+}
+
+void
+PDFLaTeXRenderer::sp_flowtext_render(SPItem *item)
+{
+    SPFlowtext *group = SP_FLOWTEXT(item);
+/*
+implement
+*/
+}
+
+void
+PDFLaTeXRenderer::sp_root_render(SPItem *item)
+{
+    SPRoot *root = SP_ROOT(item);
+
+/*
+    if (!ctx->getCurrentState()->has_overflow && SP_OBJECT(item)->parent)
+        ctx->addClippingRect(root->x.computed, root->y.computed, root->width.computed, root->height.computed);
+
+    ctx->pushState();
+    setStateForItem(ctx, item);
+    Geom::Matrix tempmat (root->c2p);
+    ctx->transform(&tempmat);
+    sp_group_render(item, ctx);
+    ctx->popState();
+*/
+}
+
+void
+PDFLaTeXRenderer::sp_item_invoke_render(SPItem *item)
+{
+    // Check item's visibility
+    if (item->isHidden()) {
+        return;
+    }
+
+    if (SP_IS_ROOT(item)) {
+        TRACE(("root\n"));
+        return sp_root_render(item);
+    } else if (SP_IS_GROUP(item)) {
+        TRACE(("group\n"));
+        return sp_group_render(item);
+    } else if (SP_IS_USE(item)) {
+        TRACE(("use begin---\n"));
+        sp_use_render(item);
+        TRACE(("---use end\n"));
+    } else if (SP_IS_TEXT(item)) {
+        TRACE(("text\n"));
+        return sp_text_render(item);
+    } else if (SP_IS_FLOWTEXT(item)) {
+        TRACE(("flowtext\n"));
+        return sp_flowtext_render(item);
+    }
+    // We are not interested in writing the other SPItem types to LaTeX
+}
+
+void
+PDFLaTeXRenderer::setStateForItem(SPItem const *item)
+{
+/*
+    SPStyle const *style = SP_OBJECT_STYLE(item);
+    ctx->setStateForStyle(style);
+
+    CairoRenderState *state = ctx->getCurrentState();
+    state->clip_path = item->clip_ref->getObject();
+    state->mask = item->mask_ref->getObject();
+    state->item_transform = Geom::Matrix (item->transform);
+
+    // If parent_has_userspace is true the parent state's transform
+    // has to be used for the mask's/clippath's context.
+    // This is so because we use the image's/(flow)text's transform for positioning
+    // instead of explicitly specifying it and letting the renderer do the
+    // transformation before rendering the item.
+    if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item) || SP_IS_IMAGE(item))
+        state->parent_has_userspace = TRUE;
+    TRACE(("setStateForItem opacity: %f\n", state->opacity));
+*/
+}
+
+void
+PDFLaTeXRenderer::renderItem(SPItem *item)
+{
+/*
+    ctx->pushState();
+    setStateForItem(ctx, item);
+
+    CairoRenderState *state = ctx->getCurrentState();
+    state->need_layer = ( state->mask || state->clip_path || state->opacity != 1.0 );
+
+    // Draw item on a temporary surface so a mask, clip path, or opacity can be applied to it.
+    if (state->need_layer) {
+        state->merge_opacity = FALSE;
+        ctx->pushLayer();
+    }
+    Geom::Matrix tempmat (item->transform);
+    ctx->transform(&tempmat);
+    sp_item_invoke_render(item, ctx);
+
+    if (state->need_layer)
+        ctx->popLayer();
+
+    ctx->popState();
+*/
+}
+
+bool
+PDFLaTeXRenderer::setupDocument(SPDocument *doc, bool pageBoundingBox, SPItem *base)
+{
+// The boundingbox calculation here should be exactly the same as the one by CairoRenderer::setupDocument !
+
+    if (!base)
+        base = SP_ITEM(sp_document_root(doc));
+
+    NRRect d;
+    if (pageBoundingBox) {
+        d.x0 = d.y0 = 0;
+        d.x1 = ceil(sp_document_width(doc));
+        d.y1 = ceil(sp_document_height(doc));
+    } else {
+        sp_item_invoke_bbox(base, &d, sp_item_i2d_affine(base), TRUE, SPItem::RENDERING_BBOX);
+    }
+
+    // convert from px to pt
+    d.x0 *= PT_PER_PX;
+    d.x1 *= PT_PER_PX;
+    d.y0 *= PT_PER_PX;
+    d.y1 *= PT_PER_PX;
+
+    double _width = d.x1-d.x0;
+    double _height = d.y1-d.y0;
+
+    if (!pageBoundingBox)
+    {
+        double high = sp_document_height(doc);
+        high *= PT_PER_PX;
+
+        transform( Geom::Translate( -d.x0 * PX_PER_PT, 
+                                    (d.y1 - high) * PX_PER_PT ) );
+    }
+
+    return true;
+}
+
+void
+PDFLaTeXRenderer::transform(Geom::Matrix const &transform)
+{
+    _m *= transform;
+}
+
+
+/*
+#include "macros.h" // SP_PRINT_*
+
+// Apply an SVG clip path
+void
+PDFLaTeXRenderer::applyClipPath(CairoRenderContext *ctx, SPClipPath const *cp)
+{
+    g_assert( ctx != NULL && ctx->_is_valid );
+
+    if (cp == NULL)
+        return;
+
+    CairoRenderContext::CairoRenderMode saved_mode = ctx->getRenderMode();
+    ctx->setRenderMode(CairoRenderContext::RENDER_MODE_CLIP);
+
+    Geom::Matrix saved_ctm;
+    if (cp->clipPathUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX) {
+        //SP_PRINT_DRECT("clipd", cp->display->bbox);
+        NRRect clip_bbox(cp->display->bbox);
+        Geom::Matrix t(Geom::Scale(clip_bbox.x1 - clip_bbox.x0, clip_bbox.y1 - clip_bbox.y0));
+        t[4] = clip_bbox.x0;
+        t[5] = clip_bbox.y0;
+        t *= ctx->getCurrentState()->transform;
+        ctx->getTransform(&saved_ctm);
+        ctx->setTransform(&t);
+    }
+
+    TRACE(("BEGIN clip\n"));
+    SPObject *co = SP_OBJECT(cp);
+    for (SPObject *child = sp_object_first_child(co) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
+        if (SP_IS_ITEM(child)) {
+            SPItem *item = SP_ITEM(child);
+
+            // combine transform of the item in clippath and the item using clippath:
+            Geom::Matrix tempmat (item->transform);
+            tempmat = tempmat * (ctx->getCurrentState()->item_transform);
+
+            // render this item in clippath
+            ctx->pushState();
+            ctx->transform(&tempmat);
+            setStateForItem(ctx, item);
+            sp_item_invoke_render(item, ctx);
+            ctx->popState();
+        }
+    }
+    TRACE(("END clip\n"));
+
+    // do clipping only if this was the first call to applyClipPath
+    if (ctx->getClipMode() == CairoRenderContext::CLIP_MODE_PATH
+        && saved_mode == CairoRenderContext::RENDER_MODE_NORMAL)
+        cairo_clip(ctx->_cr);
+
+    if (cp->clipPathUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX)
+        ctx->setTransform(&saved_ctm);
+
+    ctx->setRenderMode(saved_mode);
+}
+
+// Apply an SVG mask
+void
+PDFLaTeXRenderer::applyMask(CairoRenderContext *ctx, SPMask const *mask)
+{
+    g_assert( ctx != NULL && ctx->_is_valid );
+
+    if (mask == NULL)
+        return;
+
+    //SP_PRINT_DRECT("maskd", &mask->display->bbox);
+    NRRect mask_bbox(mask->display->bbox);
+    // TODO: should the bbox be transformed if maskUnits != userSpaceOnUse ?
+    if (mask->maskContentUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX) {
+        Geom::Matrix t(Geom::Scale(mask_bbox.x1 - mask_bbox.x0, mask_bbox.y1 - mask_bbox.y0));
+        t[4] = mask_bbox.x0;
+        t[5] = mask_bbox.y0;
+        t *= ctx->getCurrentState()->transform;
+        ctx->setTransform(&t);
+    }
+
+    // Clip mask contents... but...
+    // The mask's bounding box is the "geometric bounding box" which doesn't allow for
+    // filters which extend outside the bounding box. So don't clip.
+    // ctx->addClippingRect(mask_bbox.x0, mask_bbox.y0, mask_bbox.x1 - mask_bbox.x0, mask_bbox.y1 - mask_bbox.y0);
+
+    ctx->pushState();
+
+    TRACE(("BEGIN mask\n"));
+    SPObject *co = SP_OBJECT(mask);
+    for (SPObject *child = sp_object_first_child(co) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
+        if (SP_IS_ITEM(child)) {
+            SPItem *item = SP_ITEM(child);
+            renderItem(ctx, item);
+        }
+    }
+    TRACE(("END mask\n"));
+
+    ctx->popState();
+}
+*/
+
+}  /* namespace Internal */
+}  /* namespace Extension */
+}  /* namespace Inkscape */
+
+#undef TRACE
+
+/* End of GNU GPL code */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :

diff --git a/src/extension/internal/pdflatex-renderer.h b/src/extension/internal/pdflatex-renderer.h
new file mode 100644 (file)
index 0000000..21609e8
--- /dev/null
+++ b/src/extension/internal/pdflatex-renderer.h
@@ -0,0 +1,82 @@
+#ifndef EXTENSION_INTERNAL_PDF_LATEX_RENDERER_H_SEEN
+#define EXTENSION_INTERNAL_PDF_LATEX_RENDERER_H_SEEN
+
+/** \file
+ * Declaration of PDFLaTeXRenderer, used for rendering the accompanying LaTeX file when saving PDF output + LaTeX 
+ */
+/*
+ * Authors:
+ *  Johan Engelen <goejendaagh@zonnet.nl>
+ *
+ * Copyright (C) 2010 Authors
+ * 
+ * Licensed under GNU GPL
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "extension/extension.h"
+#include <set>
+#include <string>
+
+#include "style.h"
+
+#include <cairo.h>
+
+#include <2geom/matrix.h>
+
+class SPClipPath;
+class SPMask;
+class SPItem;
+
+namespace Inkscape {
+namespace Extension {
+namespace Internal {
+
+class PDFLaTeXRenderer {
+public:
+    PDFLaTeXRenderer();
+    virtual ~PDFLaTeXRenderer();
+
+    void setStateForItem(SPItem const *item);
+
+//    void applyClipPath(CairoRenderContext *ctx, SPClipPath const *cp);
+//    void applyMask(CairoRenderContext *ctx, SPMask const *mask);
+
+    /** Initializes the PDFLaTeXRenderer according to the specified
+    SPDocument. Important to set the boundingbox to the pdf boundingbox */
+    bool setupDocument(SPDocument *doc, bool pageBoundingBox, SPItem *base);
+
+    /** Traverses the object tree and invokes the render methods. */
+    void renderItem(SPItem *item);
+
+protected:
+    void transform(Geom::Matrix const &transform);
+    Geom::Matrix _m; // the transform for current item
+
+    void sp_item_invoke_render(SPItem *item);
+    void sp_root_render(SPItem *item);
+    void sp_group_render(SPItem *item);
+    void sp_use_render(SPItem *item);
+    void sp_text_render(SPItem *item);
+    void sp_flowtext_render(SPItem *item);
+};
+
+}  /* namespace Internal */
+}  /* namespace Extension */
+}  /* namespace Inkscape */
+
+#endif /* !EXTENSION_INTERNAL_CAIRO_RENDERER_H_SEEN */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :