#define __SP_CAIRO_RENDERER_C__ /** \file * Rendering with Cairo. */ /* * Author: * Miklos Erdelyi <erdelyim@gmail.com> * * Copyright (C) 2006 Miklos Erdelyi * * 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 <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-shape.h" #include "sp-use.h" #include "sp-text.h" #include "sp-flowtext.h" #include "sp-image.h" #include "sp-symbol.h" #include "sp-pattern.h" #include "sp-mask.h" #include "sp-clippath.h" #include <unit-constants.h> #include "helper/png-write.h" #include "helper/pixbuf-ops.h" #include "cairo-renderer.h" #include "cairo-render-context.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 { CairoRenderer::CairoRenderer(void) {} CairoRenderer::~CairoRenderer(void) { /* restore default signal handling for SIGPIPE */ #if !defined(_WIN32) && !defined(__WIN32__) (void) signal(SIGPIPE, SIG_DFL); #endif return; } CairoRenderContext* CairoRenderer::createContext(void) { CairoRenderContext *new_context = new CairoRenderContext(this); g_assert( new_context != NULL ); new_context->_state_stack = NULL; new_context->_state = NULL; // create initial render state CairoRenderState *state = new_context->_createState(); state->transform = Geom::identity(); new_context->_state_stack = g_slist_prepend(new_context->_state_stack, state); new_context->_state = state; return new_context; } void CairoRenderer::destroyContext(CairoRenderContext *ctx) { delete ctx; } /* Here comes the rendering part which could be put into the 'render' methods of SPItems' */ /* The below functions are copy&pasted plus slightly modified from *_invoke_print functions. */ static void sp_item_invoke_render(SPItem *item, CairoRenderContext *ctx); static void sp_group_render(SPItem *item, CairoRenderContext *ctx); static void sp_use_render(SPItem *item, CairoRenderContext *ctx); static void sp_shape_render(SPItem *item, CairoRenderContext *ctx); static void sp_text_render(SPItem *item, CairoRenderContext *ctx); static void sp_flowtext_render(SPItem *item, CairoRenderContext *ctx); static void sp_image_render(SPItem *item, CairoRenderContext *ctx); static void sp_symbol_render(SPItem *item, CairoRenderContext *ctx); static void sp_asbitmap_render(SPItem *item, CairoRenderContext *ctx); static void sp_shape_render_invoke_marker_rendering(SPMarker* marker, Geom::Matrix tr, SPStyle* style, CairoRenderContext *ctx) { bool render = true; if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) { if (style->stroke_width.computed > 1e-9) { tr = Geom::Scale(style->stroke_width.computed) * tr; } else { render = false; // stroke width zero and marker is thus scaled down to zero, skip } } if (render) { SPItem* marker_item = sp_item_first_item_child (SP_OBJECT (marker)); tr = (Geom::Matrix)marker_item->transform * (Geom::Matrix)marker->c2p * tr; Geom::Matrix old_tr = marker_item->transform; marker_item->transform = tr; ctx->getRenderer()->renderItem (ctx, marker_item); marker_item->transform = old_tr; } } static void sp_shape_render (SPItem *item, CairoRenderContext *ctx) { NRRect pbox; SPShape *shape = SP_SHAPE(item); if (!shape->curve) return; sp_item_invoke_bbox(item, &pbox, Geom::identity(), TRUE); SPStyle* style = SP_OBJECT_STYLE (item); Geom::PathVector const & pathv = shape->curve->get_pathvector(); ctx->renderPathVector(pathv, style, &pbox); for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) { // START position for (int i = 0; i < 2; i++) { // SP_MARKER_LOC and SP_MARKER_LOC_START if ( shape->marker[i] ) { SPMarker* marker = SP_MARKER (shape->marker[i]); Geom::Matrix tr; if (marker->orient_auto) { tr = sp_shape_marker_get_transform_at_start(path_it->front()); } else { tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(path_it->front().pointAt(0)); } sp_shape_render_invoke_marker_rendering(marker, tr, style, ctx); } } // MID position for (int i = 0; i < 3; i += 2) { // SP_MARKER_LOC and SP_MARKER_LOC_MID if ( shape->marker[i] && (path_it->size_default() > 1) ) { Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve Geom::Path::const_iterator curve_it2 = ++(path_it->begin()); // outgoing curve while (curve_it2 != path_it->end_default()) { /* Put marker between curve_it1 and curve_it2. * Loop to end_default (so including closing segment), because when a path is closed, * there should be a midpoint marker between last segment and closing straight line segment */ SPMarker* marker = SP_MARKER (shape->marker[i]); Geom::Matrix tr; if (marker->orient_auto) { tr = sp_shape_marker_get_transform(*curve_it1, *curve_it2); } else { tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(curve_it1->pointAt(1)); } sp_shape_render_invoke_marker_rendering(marker, tr, style, ctx); ++curve_it1; ++curve_it2; } } } // END position for (int i = 0; i < 4; i += 3) { // SP_MARKER_LOC and SP_MARKER_LOC_END if ( shape->marker[i] ) { SPMarker* marker = SP_MARKER (shape->marker[i]); /* Get reference to last curve in the path. * For moveto-only path, this returns the "closing line segment". */ unsigned int index = path_it->size_default(); if (index > 0) { index--; } Geom::Curve const &lastcurve = (*path_it)[index]; Geom::Matrix tr; if (marker->orient_auto) { tr = sp_shape_marker_get_transform_at_end(lastcurve); } else { tr = Geom::Rotate::from_degrees(marker->orient) * Geom::Translate(lastcurve.pointAt(1)); } sp_shape_render_invoke_marker_rendering(marker, tr, style, ctx); } } } } static void sp_group_render(SPItem *item, CairoRenderContext *ctx) { SPGroup *group = SP_GROUP(item); CairoRenderer *renderer = ctx->getRenderer(); TRACE(("sp_group_render opacity: %f\n", SP_SCALE24_TO_FLOAT(SP_OBJECT_STYLE(item)->opacity.value))); GSList *l = g_slist_reverse(group->childList(false)); while (l) { SPObject *o = SP_OBJECT (l->data); if (SP_IS_ITEM(o)) { renderer->renderItem (ctx, SP_ITEM (o)); } l = g_slist_remove (l, o); } } static void sp_use_render(SPItem *item, CairoRenderContext *ctx) { bool translated = false; SPUse *use = SP_USE(item); CairoRenderer *renderer = ctx->getRenderer(); 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)) { renderer->renderItem(ctx, SP_ITEM(use->child)); } if (translated) { ctx->popState(); } } static void sp_text_render(SPItem *item, CairoRenderContext *ctx) { SPText *group = SP_TEXT (item); group->layout.showGlyphs(ctx); } static void sp_flowtext_render(SPItem *item, CairoRenderContext *ctx) { SPFlowtext *group = SP_FLOWTEXT(item); group->layout.showGlyphs(ctx); } static void sp_image_render(SPItem *item, CairoRenderContext *ctx) { SPImage *image; guchar *px; int w, h, rs; image = SP_IMAGE (item); if (!image->pixbuf) return; if ((image->width.computed <= 0.0) || (image->height.computed <= 0.0)) return; px = gdk_pixbuf_get_pixels (image->pixbuf); w = gdk_pixbuf_get_width (image->pixbuf); h = gdk_pixbuf_get_height (image->pixbuf); rs = gdk_pixbuf_get_rowstride (image->pixbuf); double x = image->x.computed; double y = image->y.computed; double width = image->width.computed; double height = image->height.computed; if (image->aspect_align != SP_ASPECT_NONE) { calculatePreserveAspectRatio (image->aspect_align, image->aspect_clip, (double)w, (double)h, &x, &y, &width, &height); } if (image->aspect_clip == SP_ASPECT_SLICE && !ctx->getCurrentState()->has_overflow) { ctx->addClippingRect(image->x.computed, image->y.computed, image->width.computed, image->height.computed); } Geom::Translate tp(x, y); Geom::Scale s(width / (double)w, height / (double)h); Geom::Matrix t(s * tp); ctx->renderImage (px, w, h, rs, &t, SP_OBJECT_STYLE (item)); } static void sp_symbol_render(SPItem *item, CairoRenderContext *ctx) { SPSymbol *symbol = SP_SYMBOL(item); if (!SP_OBJECT_IS_CLONED (symbol)) return; /* Cloned <symbol> is actually renderable */ ctx->pushState(); ctx->transform(&symbol->c2p); // apply viewbox if set if (0 /*symbol->viewBox_set*/) { Geom::Matrix vb2user; double x, y, width, height; double view_width, view_height; x = 0.0; y = 0.0; width = 1.0; height = 1.0; view_width = symbol->viewBox.x1 - symbol->viewBox.x0; view_height = symbol->viewBox.y1 - symbol->viewBox.y0; calculatePreserveAspectRatio(symbol->aspect_align, symbol->aspect_clip, view_width, view_height, &x, &y,&width, &height); // [itemTransform *] translate(x, y) * scale(w/vw, h/vh) * translate(-vx, -vy); vb2user = Geom::identity(); vb2user[0] = width / view_width; vb2user[3] = height / view_height; vb2user[4] = x - symbol->viewBox.x0 * vb2user[0]; vb2user[5] = y - symbol->viewBox.y0 * vb2user[3]; ctx->transform(&vb2user); } sp_group_render(item, ctx); ctx->popState(); } static void sp_root_render(SPItem *item, CairoRenderContext *ctx) { SPRoot *root = SP_ROOT(item); CairoRenderer *renderer = ctx->getRenderer(); 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(); renderer->setStateForItem(ctx, item); Geom::Matrix tempmat (root->c2p); ctx->transform(&tempmat); sp_group_render(item, ctx); ctx->popState(); } /** This function converts the item to a raster image and includes the image into the cairo renderer. It is only used for filters and then only when rendering filters as bitmaps is requested. */ static void sp_asbitmap_render(SPItem *item, CairoRenderContext *ctx) { // The code was adapted from sp_selection_create_bitmap_copy in selection-chemistry.cpp // Calculate resolution double res; /** @TODO reimplement the resolution stuff (WHY?) */ res = ctx->getBitmapResolution(); if(res == 0) { res = PX_PER_IN; } TRACE(("sp_asbitmap_render: resolution: %f\n", res )); // Get the bounding box of the selection in document coordinates. Geom::OptRect bbox = item->getBounds(sp_item_i2d_affine(item), SPItem::RENDERING_BBOX); if (!bbox) // no bbox, e.g. empty group return; // The width and height of the bitmap in pixels unsigned width = (unsigned) floor ((bbox->max()[Geom::X] - bbox->min()[Geom::X]) * (res / PX_PER_IN)); unsigned height =(unsigned) floor ((bbox->max()[Geom::Y] - bbox->min()[Geom::Y]) * (res / PX_PER_IN)); // Scale to exactly fit integer bitmap inside bounding box double scale_x = (bbox->max()[Geom::X] - bbox->min()[Geom::X]) / width; double scale_y = (bbox->max()[Geom::Y] - bbox->min()[Geom::Y]) / height; // Location of bounding box in document coordinates. double shift_x = bbox->min()[Geom::X]; double shift_y = bbox->max()[Geom::Y]; // For default 90 dpi, snap bitmap to pixel grid if (res == PX_PER_IN) { shift_x = round (shift_x); shift_y = -round (-shift_y); // Correct rounding despite coordinate inversion. // Remove the negations when the inversion is gone. } // Calculate the matrix that will be applied to the image so that it exactly overlaps the source objects // Matix to put bitmap in correct place on document Geom::Matrix t_on_document = (Geom::Matrix)(Geom::Scale (scale_x, -scale_y)) * (Geom::Matrix)(Geom::Translate (shift_x, shift_y)); // ctx matrix already includes item transformation. We must substract. Geom::Matrix t_item = sp_item_i2d_affine (item); Geom::Matrix t = t_on_document * t_item.inverse(); // Do the export SPDocument *document = SP_OBJECT(item)->document; GSList *items = NULL; items = g_slist_append(items, item); GdkPixbuf *pb = sp_generate_internal_bitmap(document, NULL, bbox->min()[Geom::X], bbox->min()[Geom::Y], bbox->max()[Geom::X], bbox->max()[Geom::Y], width, height, res, res, (guint32) 0xffffff00, items ); if (pb) { TEST(gdk_pixbuf_save( pb, "bitmap.png", "png", NULL, NULL )); unsigned char *px = gdk_pixbuf_get_pixels (pb); unsigned int w = gdk_pixbuf_get_width(pb); unsigned int h = gdk_pixbuf_get_height(pb); unsigned int rs = gdk_pixbuf_get_rowstride(pb); ctx->renderImage (px, w, h, rs, &t, SP_OBJECT_STYLE (item)); gdk_pixbuf_unref (pb); } g_slist_free (items); } static void sp_item_invoke_render(SPItem *item, CairoRenderContext *ctx) { // Check item's visibility if (item->isHidden()) { return; } SPStyle* style = SP_OBJECT_STYLE (item); if((ctx->getFilterToBitmap() == TRUE) && (style->filter.set != 0)) { return sp_asbitmap_render(item, ctx); } if (SP_IS_ROOT(item)) { TRACE(("root\n")); return sp_root_render(item, ctx); } else if (SP_IS_GROUP(item)) { TRACE(("group\n")); return sp_group_render(item, ctx); } else if (SP_IS_SHAPE(item)) { TRACE(("shape\n")); return sp_shape_render(item, ctx); } else if (SP_IS_USE(item)) { TRACE(("use begin---\n")); sp_use_render(item, ctx); TRACE(("---use end\n")); } else if (SP_IS_SYMBOL(item)) { TRACE(("symbol\n")); return sp_symbol_render(item, ctx); } else if (SP_IS_TEXT(item)) { TRACE(("text\n")); return sp_text_render(item, ctx); } else if (SP_IS_FLOWTEXT(item)) { TRACE(("flowtext\n")); return sp_flowtext_render(item, ctx); } else if (SP_IS_IMAGE(item)) { TRACE(("image\n")); return sp_image_render(item, ctx); } } void CairoRenderer::setStateForItem(CairoRenderContext *ctx, 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 CairoRenderer::renderItem(CairoRenderContext *ctx, 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 CairoRenderer::setupDocument(CairoRenderContext *ctx, SPDocument *doc, bool pageBoundingBox, SPItem *base) { g_assert( ctx != NULL ); 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); } if (ctx->_vector_based_target) { // 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; } ctx->_width = d.x1-d.x0; ctx->_height = d.y1-d.y0; TRACE(("setupDocument: %f x %f\n", ctx->_width, ctx->_height)); bool ret = ctx->setupSurface(ctx->_width, ctx->_height); if (ret && !pageBoundingBox) { double high = sp_document_height(doc); if (ctx->_vector_based_target) high *= PT_PER_PX; Geom::Matrix tp(Geom::Translate(-d.x0 * (ctx->_vector_based_target ? PX_PER_PT : 1.0), (d.y1 - high) * (ctx->_vector_based_target ? PX_PER_PT : 1.0))); ctx->transform(&tp); } return ret; } #include "macros.h" // SP_PRINT_* // Apply an SVG clip path void CairoRenderer::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 CairoRenderer::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(); } void calculatePreserveAspectRatio(unsigned int aspect_align, unsigned int aspect_clip, double vp_width, double vp_height, double *x, double *y, double *width, double *height) { if (aspect_align == SP_ASPECT_NONE) return; double scalex, scaley, scale; double new_width, new_height; scalex = *width / vp_width; scaley = *height / vp_height; scale = (aspect_clip == SP_ASPECT_MEET) ? MIN(scalex, scaley) : MAX(scalex, scaley); new_width = vp_width * scale; new_height = vp_height * scale; /* Now place viewbox to requested position */ switch (aspect_align) { case SP_ASPECT_XMIN_YMIN: break; case SP_ASPECT_XMID_YMIN: *x -= 0.5 * (new_width - *width); break; case SP_ASPECT_XMAX_YMIN: *x -= 1.0 * (new_width - *width); break; case SP_ASPECT_XMIN_YMID: *y -= 0.5 * (new_height - *height); break; case SP_ASPECT_XMID_YMID: *x -= 0.5 * (new_width - *width); *y -= 0.5 * (new_height - *height); break; case SP_ASPECT_XMAX_YMID: *x -= 1.0 * (new_width - *width); *y -= 0.5 * (new_height - *height); break; case SP_ASPECT_XMIN_YMAX: *y -= 1.0 * (new_height - *height); break; case SP_ASPECT_XMID_YMAX: *x -= 0.5 * (new_width - *width); *y -= 1.0 * (new_height - *height); break; case SP_ASPECT_XMAX_YMAX: *x -= 1.0 * (new_width - *width); *y -= 1.0 * (new_height - *height); break; default: break; } *width = new_width; *height = new_height; } #include "clear-n_.h" } /* 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 :