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Diffstat (limited to '')
| -rw-r--r-- | src/desktop-style.cpp | 1992 |
1 files changed, 1992 insertions, 0 deletions
diff --git a/src/desktop-style.cpp b/src/desktop-style.cpp new file mode 100644 index 0000000..a75397a --- /dev/null +++ b/src/desktop-style.cpp @@ -0,0 +1,1992 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Desktop style management + * + * Authors: + * bulia byak + * verbalshadow + * Jon A. Cruz <jon@joncruz.org> + * Abhishek Sharma + * + * Copyright (C) 2004, 2006 authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include <string> +#include <cstring> + +#include <glibmm.h> + +#include "desktop-style.h" + +#include "color-rgba.h" +#include "desktop.h" +#include "filter-chemistry.h" +#include "inkscape.h" +#include "selection.h" + +#include "object/box3d-side.h" +#include "object/filters/blend.h" +#include "object/filters/gaussian-blur.h" +#include "object/sp-flowdiv.h" +#include "object/sp-flowregion.h" +#include "object/sp-flowtext.h" +#include "object/sp-hatch.h" +#include "object/sp-linear-gradient.h" +#include "object/sp-path.h" +#include "object/sp-pattern.h" +#include "object/sp-radial-gradient.h" +#include "object/sp-textpath.h" +#include "object/sp-tref.h" +#include "object/sp-tspan.h" +#include "object/sp-use.h" +#include "style.h" + +#include "svg/css-ostringstream.h" +#include "svg/svg-color.h" +#include "svg/svg.h" + +#include "ui/tools/tool-base.h" + +#include "xml/sp-css-attr.h" +#include "xml/attribute-record.h" + +namespace { + +bool isTextualItem(SPObject const *obj) +{ + bool isTextual = dynamic_cast<SPText const *>(obj) // + || dynamic_cast<SPFlowtext const *>(obj) // + || dynamic_cast<SPTSpan const *>(obj) // + || dynamic_cast<SPTRef const *>(obj) // + || dynamic_cast<SPTextPath const *>(obj) // + || dynamic_cast<SPFlowdiv const *>(obj) // + || dynamic_cast<SPFlowpara const *>(obj) // + || dynamic_cast<SPFlowtspan const *>(obj); + + return isTextual; +} + +} // namespace + +/** + * Set color on selection on desktop. + */ +void +sp_desktop_set_color(SPDesktop *desktop, ColorRGBA const &color, bool is_relative, bool fill) +{ + /// \todo relative color setting + if (is_relative) { + g_warning("FIXME: relative color setting not yet implemented"); + return; + } + + guint32 rgba = SP_RGBA32_F_COMPOSE(color[0], color[1], color[2], color[3]); + gchar b[64]; + sp_svg_write_color(b, sizeof(b), rgba); + SPCSSAttr *css = sp_repr_css_attr_new(); + if (fill) { + sp_repr_css_set_property(css, "fill", b); + Inkscape::CSSOStringStream osalpha; + osalpha << color[3]; + sp_repr_css_set_property(css, "fill-opacity", osalpha.str().c_str()); + } else { + sp_repr_css_set_property(css, "stroke", b); + Inkscape::CSSOStringStream osalpha; + osalpha << color[3]; + sp_repr_css_set_property(css, "stroke-opacity", osalpha.str().c_str()); + } + + sp_desktop_set_style(desktop, css); + + sp_repr_css_attr_unref(css); +} + +/** + * Apply style on object and children, recursively. + */ +void +sp_desktop_apply_css_recursive(SPObject *o, SPCSSAttr *css, bool skip_lines) +{ + // non-items should not have style + SPItem *item = dynamic_cast<SPItem *>(o); + if (!item) { + return; + } + + // 1. tspans with role=line are not regular objects in that they are not supposed to have style of their own, + // but must always inherit from the parent text. Same for textPath. + // However, if the line tspan or textPath contains some style (old file?), we reluctantly set our style to it too. + + // 2. Generally we allow setting style on clones, but when it's inside flowRegion, do not touch + // it, be it clone or not; it's just styleless shape (because that's how Inkscape does + // flowtext). + + SPTSpan *tspan = dynamic_cast<SPTSpan *>(o); + + if (!(skip_lines + && ((tspan && tspan->role == SP_TSPAN_ROLE_LINE) + || dynamic_cast<SPFlowdiv *>(o) + || dynamic_cast<SPFlowpara *>(o) + || dynamic_cast<SPTextPath *>(o)) + && !o->getAttribute("style")) + && + !(dynamic_cast<SPFlowregionbreak *>(o) || + dynamic_cast<SPFlowregionExclude *>(o) || + (dynamic_cast<SPUse *>(o) && + o->parent && + (dynamic_cast<SPFlowregion *>(o->parent) || + dynamic_cast<SPFlowregionExclude *>(o->parent) + ) + ) + ) + ) { + + SPCSSAttr *css_set = sp_repr_css_attr_new(); + sp_repr_css_merge(css_set, css); + + // Scale the style by the inverse of the accumulated parent transform in the paste context. + { + Geom::Affine const local(item->i2doc_affine()); + double const ex(local.descrim()); + if ( ( ex != 0. ) + && ( ex != 1. ) ) { + sp_css_attr_scale(css_set, 1/ex); + } + } + + o->changeCSS(css_set,"style"); + + sp_repr_css_attr_unref(css_set); + } + + // setting style on child of clone spills into the clone original (via shared repr), don't do it! + if (dynamic_cast<SPUse *>(o)) { + return; + } + + for (auto& child: o->children) { + if (sp_repr_css_property(css, "opacity", nullptr) != nullptr) { + // Unset properties which are accumulating and thus should not be set recursively. + // For example, setting opacity 0.5 on a group recursively would result in the visible opacity of 0.25 for an item in the group. + SPCSSAttr *css_recurse = sp_repr_css_attr_new(); + sp_repr_css_merge(css_recurse, css); + sp_repr_css_set_property(css_recurse, "opacity", nullptr); + sp_desktop_apply_css_recursive(&child, css_recurse, skip_lines); + sp_repr_css_attr_unref(css_recurse); + } else { + sp_desktop_apply_css_recursive(&child, css, skip_lines); + } + } +} + +/** + * Apply style on selection on desktop. + */ + +void sp_desktop_set_style(SPDesktop *desktop, SPCSSAttr *css, bool change, bool write_current, bool switch_style) +{ + return sp_desktop_set_style(desktop->getSelection(), desktop, css, change, write_current, switch_style); +} + +void +sp_desktop_set_style(Inkscape::ObjectSet *set, SPDesktop *desktop, SPCSSAttr *css, bool change, bool write_current, bool switch_style) +{ + if (write_current) { + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + // 1. Set internal value + sp_repr_css_merge(desktop->current, css); + + // 1a. Write to prefs; make a copy and unset any URIs first + SPCSSAttr *css_write = sp_repr_css_attr_new(); + sp_repr_css_merge(css_write, css); + sp_css_attr_unset_uris(css_write); + prefs->mergeStyle("/desktop/style", css_write); + auto itemlist = set->items(); + for (auto i = itemlist.begin(); i!= itemlist.end(); ++i) { + /* last used styles for 3D box faces are stored separately */ + SPObject *obj = *i; + Box3DSide *side = dynamic_cast<Box3DSide *>(obj); + if (side) { + prefs->mergeStyle( + Glib::ustring("/desktop/") + side->axes_string() + "/style", css_write); + } + } + sp_repr_css_attr_unref(css_write); + } + + if (!change) + return; + +// 2. Emit signal... See desktop->connectSetStyle in text-tool, tweak-tool, and gradient-drag. + bool intercepted = desktop->_set_style_signal.emit(css, switch_style); + +/** \todo + * FIXME: in set_style, compensate pattern and gradient fills, stroke width, + * rect corners, font size for the object's own transform so that pasting + * fills does not depend on preserve/optimize. + */ + +// 3. If nobody has intercepted the signal, apply the style to the selection + if (!intercepted) { + // If we have an event context, update its cursor (TODO: it could be neater to do this with the signal sent above, but what if the signal gets intercepted?) + if (desktop->event_context) { + desktop->event_context->use_tool_cursor(); + } + + // Remove text attributes if not text... + // Do this once in case a zillion objects are selected. + SPCSSAttr *css_no_text = sp_repr_css_attr_new(); + sp_repr_css_merge(css_no_text, css); + css_no_text = sp_css_attr_unset_text(css_no_text); + + auto itemlist = set->items(); + for (auto i = itemlist.begin(); i!= itemlist.end(); ++i) { + SPItem *item = *i; + + // If not text, don't apply text attributes (can a group have text attributes? Yes! FIXME) + if (isTextualItem(item)) { + + // If any font property has changed, then we have written out the font + // properties in longhand and we need to remove the 'font' shorthand. + if( !sp_repr_css_property_is_unset(css, "font-family") ) { + sp_repr_css_unset_property(css, "font"); + } + + sp_desktop_apply_css_recursive(item, css, true); + + } else { + + sp_desktop_apply_css_recursive(item, css_no_text, true); + + } + } + sp_repr_css_attr_unref(css_no_text); + } +} + +/** + * Return the desktop's current style. + */ +SPCSSAttr * +sp_desktop_get_style(SPDesktop *desktop, bool with_text) +{ + SPCSSAttr *css = sp_repr_css_attr_new(); + sp_repr_css_merge(css, desktop->current); + const auto & l = css->attributeList(); + if (l.empty()) { + sp_repr_css_attr_unref(css); + return nullptr; + } else { + if (!with_text) { + css = sp_css_attr_unset_text(css); + } + return css; + } +} + +/** + * Return the desktop's current color. + */ +guint32 +sp_desktop_get_color(SPDesktop *desktop, bool is_fill) +{ + guint32 r = 0; // if there's no color, return black + gchar const *property = sp_repr_css_property(desktop->current, + is_fill ? "fill" : "stroke", + "#000"); + + if (desktop->current && property) { // if there is style and the property in it, + if (strncmp(property, "url", 3)) { // and if it's not url, + // read it + r = sp_svg_read_color(property, r); + } + } + + return r; +} + +double +sp_desktop_get_master_opacity_tool(SPDesktop *desktop, Glib::ustring const &tool, bool *has_opacity) +{ + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + SPCSSAttr *css = nullptr; + gfloat value = 1.0; // default if nothing else found + if (has_opacity) + *has_opacity = false; + if (prefs->getBool(tool + "/usecurrent")) { + css = sp_desktop_get_style(desktop, true); + } else { + css = prefs->getStyle(tool + "/style"); + } + + if (css) { + gchar const *property = css ? sp_repr_css_property(css, "opacity", "1.000") : nullptr; + + if (desktop->current && property) { // if there is style and the property in it, + if ( !sp_svg_number_read_f(property, &value) ) { + value = 1.0; // things failed. set back to the default + } else { + if (has_opacity) + *has_opacity = true; + } + } + + sp_repr_css_attr_unref(css); + } + + return value; +} +double +sp_desktop_get_opacity_tool(SPDesktop *desktop, Glib::ustring const &tool, bool is_fill) +{ + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + SPCSSAttr *css = nullptr; + gfloat value = 1.0; // default if nothing else found + if (prefs->getBool(tool + "/usecurrent")) { + css = sp_desktop_get_style(desktop, true); + } else { + css = prefs->getStyle(tool + "/style"); + } + + if (css) { + gchar const *property = css ? sp_repr_css_property(css, is_fill ? "fill-opacity": "stroke-opacity", "1.000") : nullptr; + + if (desktop->current && property) { // if there is style and the property in it, + if ( !sp_svg_number_read_f(property, &value) ) { + value = 1.0; // things failed. set back to the default + } + } + + sp_repr_css_attr_unref(css); + } + + return value; +} + +guint32 +sp_desktop_get_color_tool(SPDesktop *desktop, Glib::ustring const &tool, bool is_fill, bool *has_color) +{ + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + SPCSSAttr *css = nullptr; + guint32 r = 0; // if there's no color, return black + if (has_color) + *has_color = false; + bool styleFromCurrent = prefs->getBool(tool + "/usecurrent"); + if (styleFromCurrent) { + css = sp_desktop_get_style(desktop, true); + } else { + css = prefs->getStyle(tool + "/style"); + Inkscape::GC::anchor(css); + } + + if (css) { + gchar const *property = sp_repr_css_property(css, is_fill ? "fill" : "stroke", "#000"); + + if (desktop->current && property) { // if there is style and the property in it, + if (strncmp(property, "url", 3) && strncmp(property, "none", 4)) { // and if it's not url or none, + // read it + r = sp_svg_read_color(property, r); + if (has_color) + *has_color = true; + } + } + + sp_repr_css_attr_unref(css); + } + + return r | 0xff; +} + +/** + * Apply the desktop's current style or the tool style to repr. + */ +void +sp_desktop_apply_style_tool(SPDesktop *desktop, Inkscape::XML::Node *repr, Glib::ustring const &tool_path, bool with_text) +{ + SPCSSAttr *css_current = sp_desktop_get_style(desktop, with_text); + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + + if (prefs->getBool(tool_path + "/usecurrent") && css_current) { + sp_repr_css_unset_property(css_current, "mix-blend-mode"); + sp_repr_css_unset_property(css_current, "filter"); + sp_repr_css_set(repr, css_current, "style"); + } else { + SPCSSAttr *css = prefs->getInheritedStyle(tool_path + "/style"); + sp_repr_css_set(repr, css, "style"); + sp_repr_css_attr_unref(css); + } + if (css_current) { + sp_repr_css_attr_unref(css_current); + } +} + +/** + * Returns the font size (in SVG pixels) of the text tool style (if text + * tool uses its own style) or desktop style (otherwise). +*/ +double +sp_desktop_get_font_size_tool(SPDesktop *desktop) +{ + (void)desktop; // TODO cleanup + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + Glib::ustring desktop_style = prefs->getString("/desktop/style"); + Glib::ustring style_str; + if ((prefs->getBool("/tools/text/usecurrent")) && !desktop_style.empty()) { + style_str = desktop_style; + } else { + style_str = prefs->getString("/tools/text/style"); + } + + double ret = 12; + if (!style_str.empty()) { + SPStyle style(SP_ACTIVE_DOCUMENT); + style.mergeString(style_str.data()); + ret = style.font_size.computed; + } + return ret; +} + +/** Determine average stroke width, simple method */ +gdouble +stroke_average_width (const std::vector<SPItem*> &objects) +{ + if (objects.empty()) + return Geom::infinity(); + + gdouble avgwidth = 0.0; + bool notstroked = true; + int n_notstroked = 0; + for (auto item : objects) { + if (!item) { + continue; + } + + Geom::Affine i2dt = item->i2dt_affine(); + + double width = item->style->stroke_width.computed * i2dt.descrim(); + + // Width becomes NaN when scaling a diagonal line to a horizontal line (lp:825840) + if (item->style->stroke.isNone() || std::isnan(width)) { + ++n_notstroked; // do not count nonstroked objects + continue; + } else { + notstroked = false; + } + + avgwidth += width; + } + + if (notstroked) + return Geom::infinity(); + + return avgwidth / (objects.size() - n_notstroked); +} + +static bool vectorsClose( std::vector<double> const &lhs, std::vector<double> const &rhs ) +{ + bool isClose = false; + if ( lhs.size() == rhs.size() ) { + static double epsilon = 1e-6; + isClose = true; + for ( size_t i = 0; (i < lhs.size()) && isClose; ++i ) { + isClose = fabs(lhs[i] - rhs[i]) < epsilon; + } + } + return isClose; +} + + +/** + * Write to style_res the average fill or stroke of list of objects, if applicable. + */ +int +objects_query_fillstroke (const std::vector<SPItem*> &objects, SPStyle *style_res, bool const isfill) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + SPIPaint *paint_res = style_res->getFillOrStroke(isfill); + bool paintImpossible = true; + paint_res->set = true; + + SVGICCColor* iccColor = nullptr; + + bool iccSeen = false; + gfloat c[4]; + c[0] = c[1] = c[2] = c[3] = 0.0; + gint num = 0; + + gfloat prev[3]; + prev[0] = prev[1] = prev[2] = 0.0; + bool same_color = true; + + for (auto obj : objects) { + if (!obj) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + SPIPaint *paint = style->getFillOrStroke(isfill); + if (!paint) { + continue; + } + + // We consider paint "effectively set" for anything within text hierarchy + SPObject *parent = obj->parent; + bool paint_effectively_set = + paint->set || (dynamic_cast<SPText *>(parent) || dynamic_cast<SPTextPath *>(parent) || dynamic_cast<SPTSpan *>(parent) + || dynamic_cast<SPFlowtext *>(parent) || dynamic_cast<SPFlowdiv *>(parent) || dynamic_cast<SPFlowpara *>(parent) + || dynamic_cast<SPFlowtspan *>(parent) || dynamic_cast<SPFlowline*>(parent)); + + // 1. Bail out with QUERY_STYLE_MULTIPLE_DIFFERENT if necessary + + // cppcheck-suppress comparisonOfBoolWithInt + if ((!paintImpossible) && (!paint->isSameType(*paint_res) || (paint_res->set != paint_effectively_set))) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different types of paint + } + + if (paint_res->set && paint->set && paint_res->isPaintserver()) { + // both previous paint and this paint were a server, see if the servers are compatible + + SPPaintServer *server_res = isfill ? style_res->getFillPaintServer() : style_res->getStrokePaintServer(); + SPPaintServer *server = isfill ? style->getFillPaintServer() : style->getStrokePaintServer(); + + SPLinearGradient *linear_res = dynamic_cast<SPLinearGradient *>(server_res); + SPRadialGradient *radial_res = linear_res ? nullptr : dynamic_cast<SPRadialGradient *>(server_res); + SPPattern *pattern_res = (linear_res || radial_res) ? nullptr : dynamic_cast<SPPattern *>(server_res); + SPHatch *hatch_res = + (linear_res || radial_res || pattern_res) ? nullptr : dynamic_cast<SPHatch *>(server_res); + + if (linear_res) { + SPLinearGradient *linear = dynamic_cast<SPLinearGradient *>(server); + if (!linear) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server + } + + SPGradient *vector = linear->getVector(); + SPGradient *vector_res = linear_res->getVector(); + if (vector_res != vector) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors + } + } else if (radial_res) { + SPRadialGradient *radial = dynamic_cast<SPRadialGradient *>(server); + if (!radial) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server + } + + SPGradient *vector = radial->getVector(); + SPGradient *vector_res = radial_res->getVector(); + if (vector_res != vector) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors + } + } else if (pattern_res) { + SPPattern *pattern = dynamic_cast<SPPattern *>(server); + if (!pattern) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server + } + + SPPattern *pat = SP_PATTERN (server)->rootPattern(); + SPPattern *pat_res = SP_PATTERN (server_res)->rootPattern(); + if (pat_res != pat) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different pattern roots + } + } else if (hatch_res) { + SPHatch *hatch = dynamic_cast<SPHatch *>(server); + if (!hatch) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server + } + + SPHatch *hat = SP_HATCH(server)->rootHatch(); + SPHatch *hat_res = SP_HATCH(server_res)->rootHatch(); + if (hat_res != hat) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; // different hatch roots + } + } + } + + // 2. Sum color, copy server from paint to paint_res + + if (paint_res->set && paint_effectively_set && paint->isColor()) { + gfloat d[3]; + paint->value.color.get_rgb_floatv(d); + + // Check if this color is the same as previous + if (paintImpossible) { + prev[0] = d[0]; + prev[1] = d[1]; + prev[2] = d[2]; + paint_res->setColor(d[0], d[1], d[2]); + iccColor = paint->value.color.icc; + iccSeen = true; + } else { + if (same_color && (prev[0] != d[0] || prev[1] != d[1] || prev[2] != d[2])) { + same_color = false; + iccColor = nullptr; + } + if ( iccSeen && iccColor ) { + if ( !paint->value.color.icc + || (iccColor->colorProfile != paint->value.color.icc->colorProfile) + || !vectorsClose(iccColor->colors, paint->value.color.icc->colors) ) { + same_color = false; + iccColor = nullptr; + } + } + } + + // average color + c[0] += d[0]; + c[1] += d[1]; + c[2] += d[2]; + c[3] += SP_SCALE24_TO_FLOAT (isfill? style->fill_opacity.value : style->stroke_opacity.value); + + num ++; + } + + paintImpossible = false; + paint_res->colorSet = paint->colorSet; + paint_res->paintOrigin = paint->paintOrigin; + if (paint_res->set && paint_effectively_set && paint->isPaintserver()) { // copy the server + if (isfill) { + sp_style_set_to_uri(style_res, true, style->getFillURI()); + } else { + sp_style_set_to_uri(style_res, false, style->getStrokeURI()); + } + } + paint_res->set = paint_effectively_set; + style_res->fill_rule.computed = style->fill_rule.computed; // no averaging on this, just use the last one + } + + // After all objects processed, divide the color if necessary and return + if (paint_res->set && paint_res->isColor()) { // set the color + g_assert (num >= 1); + + c[0] /= num; + c[1] /= num; + c[2] /= num; + c[3] /= num; + paint_res->setColor(c[0], c[1], c[2]); + if (isfill) { + style_res->fill_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]); + } else { + style_res->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]); + } + + + if ( iccSeen && iccColor ) { + // TODO check for existing + SVGICCColor* tmp = new SVGICCColor(*iccColor); + paint_res->value.color.icc = tmp; + } + + if (num > 1) { + if (same_color) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_AVERAGED; + } else { + return QUERY_STYLE_SINGLE; + } + } + + // Not color + if (objects.size() > 1) { + return QUERY_STYLE_MULTIPLE_SAME; + } else { + return QUERY_STYLE_SINGLE; + } +} + +/** + * Write to style_res the average opacity of a list of objects. + */ +int +objects_query_opacity (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + gdouble opacity_sum = 0; + gdouble opacity_prev = -1; + bool same_opacity = true; + guint opacity_items = 0; + + + for (auto obj : objects) { + if (!obj) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + double opacity = SP_SCALE24_TO_FLOAT(style->opacity.value); + opacity_sum += opacity; + if (opacity_prev != -1 && opacity != opacity_prev) { + same_opacity = false; + } + opacity_prev = opacity; + opacity_items ++; + } + if (opacity_items > 1) { + opacity_sum /= opacity_items; + } + + style_res->opacity.value = SP_SCALE24_FROM_FLOAT(opacity_sum); + + if (opacity_items == 0) { + return QUERY_STYLE_NOTHING; + } else if (opacity_items == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_opacity) { + return QUERY_STYLE_MULTIPLE_SAME; + } else { + return QUERY_STYLE_MULTIPLE_AVERAGED; + } + } +} + +/** + * Write to style_res the average stroke width of a list of objects. + */ +int +objects_query_strokewidth (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + gdouble avgwidth = 0.0; + + gdouble prev_sw = -1; + bool same_sw = true; + bool noneSet = true; // is stroke set to none? + bool prev_hairline; + + int n_stroked = 0; + + for (auto obj : objects) { + if (!obj) { + continue; + } + SPItem *item = dynamic_cast<SPItem *>(obj); + if (!item) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + noneSet &= style->stroke.isNone(); + + if (style->stroke_extensions.hairline) { + // Can't average a bool. It's true if there's any hairlines in the selection. + style_res->stroke_extensions.hairline = true; + } + + if (n_stroked > 0 && prev_hairline != style->stroke_extensions.hairline) { + same_sw = false; + } + prev_hairline = style->stroke_extensions.hairline; + + Geom::Affine i2d = item->i2dt_affine(); + double sw = style->stroke_width.computed * i2d.descrim(); + + if (!std::isnan(sw)) { + if (prev_sw != -1 && fabs(sw - prev_sw) > 1e-3) + same_sw = false; + prev_sw = sw; + + avgwidth += sw; + n_stroked ++; + } else if (style->stroke_extensions.hairline) { + n_stroked ++; + } + } + + if (n_stroked > 1) + avgwidth /= (n_stroked); + + style_res->stroke_width.computed = avgwidth; + style_res->stroke_width.set = true; + style_res->stroke.noneSet = noneSet; // Will only be true if none of the selected objects has it's stroke set. + + if (n_stroked == 0) { + return QUERY_STYLE_NOTHING; + } else if (n_stroked == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_sw) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_AVERAGED; + } +} + +/** + * Write to style_res the average miter limit of a list of objects. + */ +int +objects_query_miterlimit (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + gdouble avgml = 0.0; + int n_stroked = 0; + + gdouble prev_ml = -1; + bool same_ml = true; + + for (auto obj : objects) { + if (!dynamic_cast<SPItem *>(obj)) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + if ( style->stroke.isNone() ) { + continue; + } + + n_stroked ++; + + if (prev_ml != -1 && fabs(style->stroke_miterlimit.value - prev_ml) > 1e-3) { + same_ml = false; + } + prev_ml = style->stroke_miterlimit.value; + + avgml += style->stroke_miterlimit.value; + } + + if (n_stroked > 1) { + avgml /= (n_stroked); + } + + style_res->stroke_miterlimit.value = avgml; + style_res->stroke_miterlimit.set = true; + + if (n_stroked == 0) { + return QUERY_STYLE_NOTHING; + } else if (n_stroked == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_ml) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_AVERAGED; + } +} + +/** + * Write to style_res the stroke cap of a list of objects. + */ +int +objects_query_strokecap (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + auto prev_cap = SP_STROKE_LINECAP_BUTT; + bool same_cap = true; + int n_stroked = 0; + + for (auto obj : objects) { + if (!dynamic_cast<SPItem *>(obj)) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + if ( style->stroke.isNone() ) { + continue; + } + + n_stroked ++; + + if (n_stroked > 1 && style->stroke_linecap.value != prev_cap) + same_cap = false; + prev_cap = style->stroke_linecap.value; + } + + style_res->stroke_linecap.value = prev_cap; + style_res->stroke_linecap.set = true; + + if (n_stroked == 0) { + return QUERY_STYLE_NOTHING; + } else if (n_stroked == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_cap) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } +} + +/** + * Write to style_res the stroke join of a list of objects. + */ +int +objects_query_strokejoin (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + auto prev_join = SP_STROKE_LINEJOIN_MITER; + bool same_join = true; + int n_stroked = 0; + + for (auto obj : objects) { + if (!dynamic_cast<SPItem *>(obj)) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + if ( style->stroke.isNone() ) { + continue; + } + + n_stroked ++; + + if (n_stroked > 1 && style->stroke_linejoin.value != prev_join) { + same_join = false; + } + prev_join = style->stroke_linejoin.value; + } + + style_res->stroke_linejoin.value = prev_join; + style_res->stroke_linejoin.set = true; + + if (n_stroked == 0) { + return QUERY_STYLE_NOTHING; + } else if (n_stroked == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_join) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } +} + +/** + * Write to style_res the paint order of a list of objects. + */ +int +objects_query_paintorder (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + std::string prev_order; + bool same_order = true; + int n_order = 0; + + for (auto obj : objects) { + if (!dynamic_cast<SPItem *>(obj)) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + + if ( style->stroke.isNone() ) { + continue; + } + + n_order ++; + + if (style->paint_order.set) { + if (!prev_order.empty() && prev_order.compare( style->paint_order.value ) != 0) { + same_order = false; + } + prev_order = style->paint_order.value; + } + } + + + g_free( style_res->paint_order.value ); + style_res->paint_order.value= g_strdup( prev_order.c_str() ); + style_res->paint_order.set = true; + + if (n_order == 0) { + return QUERY_STYLE_NOTHING; + } else if (n_order == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_order) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } +} + +/** + * Write to style_res the average font size and spacing of objects. + */ +int +objects_query_fontnumbers (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + bool different_lineheight = false; + bool different_lineheight_unit = false; + + double size = 0; + double letterspacing = 0; + double wordspacing = 0; + double lineheight = 0; + bool letterspacing_normal = false; + bool wordspacing_normal = false; + bool lineheight_normal = false; + bool lineheight_unit_proportional = false; + bool lineheight_unit_absolute = false; + bool lineheight_set = false; // Set true if any object has lineheight set. + + double size_prev = 0; + double letterspacing_prev = 0; + double wordspacing_prev = 0; + double lineheight_prev = 0; + int lineheight_unit_prev = -1; + + int texts = 0; + int no_size = 0; + + for (auto obj : objects) { + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + SPItem *item = dynamic_cast<SPItem *>(obj); + g_assert(item != nullptr); + + // Quick way of getting document scale. Should be same as: + // item->document->getDocumentScale().Affine().descrim() + double doc_scale = Geom::Affine(item->i2dt_affine()).descrim(); + + double dummy = style->font_size.computed * doc_scale; + if (!std::isnan(dummy)) { + size += dummy; /// \todo FIXME: we assume non-% units here + } else { + no_size++; + } + + if (style->letter_spacing.normal) { + if (!different && (letterspacing_prev == 0 || letterspacing_prev == letterspacing)) { + letterspacing_normal = true; + } + } else { + letterspacing += style->letter_spacing.computed * doc_scale;; /// \todo FIXME: we assume non-% units here + letterspacing_normal = false; + } + + if (style->word_spacing.normal) { + if (!different && (wordspacing_prev == 0 || wordspacing_prev == wordspacing)) { + wordspacing_normal = true; + } + } else { + wordspacing += style->word_spacing.computed * doc_scale; /// \todo FIXME: we assume non-% units here + wordspacing_normal = false; + } + + // If all line spacing units the same, use that (average line spacing). + // Else if all line spacings absolute, use 'px' (average line spacing). + // Else if all line spacings proportional, use % (average line spacing). + // Else use default. + double lineheight_current; + int lineheight_unit_current; + if (style->line_height.normal) { + lineheight_current = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL; + lineheight_unit_current = SP_CSS_UNIT_NONE; + if (!different_lineheight && + (lineheight_prev == 0 || lineheight_prev == lineheight_current)) + lineheight_normal = true; + } else if (style->line_height.unit == SP_CSS_UNIT_NONE || + style->line_height.unit == SP_CSS_UNIT_PERCENT || + style->line_height.unit == SP_CSS_UNIT_EM || + style->line_height.unit == SP_CSS_UNIT_EX || + style->font_size.computed == 0) { + lineheight_current = style->line_height.value; + lineheight_unit_current = style->line_height.unit; + lineheight_unit_proportional = true; + lineheight_normal = false; + lineheight += lineheight_current; + } else { + // Always 'px' internally + lineheight_current = style->line_height.computed; + lineheight_unit_current = style->line_height.unit; + lineheight_unit_absolute = true; + lineheight_normal = false; + lineheight += lineheight_current * doc_scale; + } + if (style->line_height.set) { + lineheight_set = true; + } + + if ((size_prev != 0 && style->font_size.computed != size_prev) || + (letterspacing_prev != 0 && style->letter_spacing.computed != letterspacing_prev) || + (wordspacing_prev != 0 && style->word_spacing.computed != wordspacing_prev)) { + different = true; + } + + if (lineheight_prev != 0 && lineheight_current != lineheight_prev) { + different_lineheight = true; + } + + if (lineheight_unit_prev != -1 && lineheight_unit_current != lineheight_unit_prev) { + different_lineheight_unit = true; + } + + size_prev = style->font_size.computed; + letterspacing_prev = style->letter_spacing.computed; + wordspacing_prev = style->word_spacing.computed; + lineheight_prev = lineheight_current; + lineheight_unit_prev = lineheight_unit_current; + + // FIXME: we must detect MULTIPLE_DIFFERENT for these too + style_res->text_anchor.computed = style->text_anchor.computed; + } + + if (texts == 0) + return QUERY_STYLE_NOTHING; + + if (texts > 1) { + if (texts - no_size > 0) { + size /= (texts - no_size); + } + letterspacing /= texts; + wordspacing /= texts; + lineheight /= texts; + } + + style_res->font_size.computed = size; + style_res->font_size.type = SP_FONT_SIZE_LENGTH; + + style_res->letter_spacing.normal = letterspacing_normal; + style_res->letter_spacing.computed = letterspacing; + + style_res->word_spacing.normal = wordspacing_normal; + style_res->word_spacing.computed = wordspacing; + + style_res->line_height.normal = lineheight_normal; + style_res->line_height.computed = lineheight; + style_res->line_height.value = lineheight; + if (different_lineheight_unit) { + if (lineheight_unit_absolute && !lineheight_unit_proportional) { + // Mixture of absolute units + style_res->line_height.unit = SP_CSS_UNIT_PX; + } else { + // Mixture of relative units + style_res->line_height.unit = SP_CSS_UNIT_PERCENT; + } + if (lineheight_unit_absolute && lineheight_unit_proportional) { + // Mixed types of units, fallback to default + style_res->line_height.computed = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL * 100.0; + style_res->line_height.value = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL * 100.0; + } + } else { + // Same units. + if (lineheight_unit_prev != -1) { + style_res->line_height.unit = lineheight_unit_prev; + } else { + // No text object... use default. + style_res->line_height.unit = SP_CSS_UNIT_NONE; + style_res->line_height.computed = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL; + style_res->line_height.value = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL; + } + } + + // Used by text toolbar unset 'line-height' + style_res->line_height.set = lineheight_set; + + if (texts > 1) { + if (different || different_lineheight) { + return QUERY_STYLE_MULTIPLE_AVERAGED; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + +/** + * Write to style_res the average font style of objects. + */ +int +objects_query_fontstyle (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + bool set = false; + + int texts = 0; + + for (auto obj : objects) { + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + if (set && + ( ( style_res->font_weight.computed != style->font_weight.computed ) || + ( style_res->font_style.computed != style->font_style.computed ) || + ( style_res->font_stretch.computed != style->font_stretch.computed ) || + ( style_res->font_variant.computed != style->font_variant.computed ) || + ( style_res->font_variation_settings != style->font_variation_settings ) ) ) { + different = true; // different styles + } + + set = true; + style_res->font_weight.value = style_res->font_weight.computed = style->font_weight.computed; + style_res->font_style.value = style_res->font_style.computed = style->font_style.computed; + style_res->font_stretch.value = style_res->font_stretch.computed = style->font_stretch.computed; + style_res->font_variant.value = style_res->font_variant.computed = style->font_variant.computed; + style_res->font_variation_settings = style->font_variation_settings; + style_res->text_align.value = style_res->text_align.computed = style->text_align.computed; + style_res->font_size.value = style->font_size.value; + style_res->font_size.unit = style->font_size.unit; + } + + if (texts == 0 || !set) + return QUERY_STYLE_NOTHING; + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + +int +objects_query_fontvariants (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool set = false; + + int texts = 0; + + SPILigatures* ligatures_res = &(style_res->font_variant_ligatures); + SPINumeric* numeric_res = &(style_res->font_variant_numeric); + SPIEastAsian* asian_res = &(style_res->font_variant_east_asian); + + // Stores 'and' of all values + ligatures_res->computed = SP_CSS_FONT_VARIANT_LIGATURES_NORMAL; + int position_computed = SP_CSS_FONT_VARIANT_POSITION_NORMAL; + int caps_computed = SP_CSS_FONT_VARIANT_CAPS_NORMAL; + numeric_res->computed = SP_CSS_FONT_VARIANT_NUMERIC_NORMAL; + asian_res->computed = SP_CSS_FONT_VARIANT_EAST_ASIAN_NORMAL; + + // Stores only differences + ligatures_res->value = 0; + int position_value = 0; + int caps_value = 0; + numeric_res->value = 0; + asian_res->value = 0; + + for (auto obj : objects) { + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + SPILigatures* ligatures_in = &(style->font_variant_ligatures); + auto* position_in = &(style->font_variant_position); + auto* caps_in = &(style->font_variant_caps); + SPINumeric* numeric_in = &(style->font_variant_numeric); + SPIEastAsian* asian_in = &(style->font_variant_east_asian); + + // computed stores which bits are on/off, only valid if same between all selected objects. + // value stores which bits are different between objects. This is a bit of an abuse of + // the values but then we don't need to add new variables to class. + if (set) { + ligatures_res->value |= (ligatures_res->computed ^ ligatures_in->computed ); + ligatures_res->computed &= ligatures_in->computed; + + position_value |= (position_computed ^ position_in->computed); + position_computed &= position_in->computed; + + caps_value |= (caps_computed ^ caps_in->computed); + caps_computed &= caps_in->computed; + + numeric_res->value |= (numeric_res->computed ^ numeric_in->computed ); + numeric_res->computed &= numeric_in->computed; + + asian_res->value |= (asian_res->computed ^ asian_in->computed ); + asian_res->computed &= asian_in->computed; + + } else { + ligatures_res->computed = ligatures_in->computed; + position_computed = position_in->computed; + caps_computed = caps_in->computed; + numeric_res->computed = numeric_in->computed; + asian_res->computed = asian_in->computed; + } + + set = true; + } + + // violates enum type safety! + style_res->font_variant_position.value = static_cast<SPCSSFontVariantPosition>(position_value); + style_res->font_variant_position.computed = static_cast<SPCSSFontVariantPosition>(position_computed); + style_res->font_variant_caps.value = static_cast<SPCSSFontVariantCaps>(caps_value); + style_res->font_variant_caps.computed = static_cast<SPCSSFontVariantCaps>(caps_computed); + + bool different = (style_res->font_variant_ligatures.value != 0 || + position_value != 0 || + caps_value != 0 || + style_res->font_variant_numeric.value != 0 || + style_res->font_variant_east_asian.value != 0); + + if (texts == 0 || !set) + return QUERY_STYLE_NOTHING; + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + + +/** + * Write to style_res the average writing modes style of objects. + */ +int +objects_query_writing_modes (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + bool set = false; + + int texts = 0; + + for (auto obj : objects) { + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + if (set && + ( ( style_res->writing_mode.computed != style->writing_mode.computed ) || + ( style_res->direction.computed != style->direction.computed ) || + ( style_res->text_orientation.computed != style->text_orientation.computed ) ) ) { + different = true; // different styles + } + + set = true; + style_res->writing_mode.computed = style->writing_mode.computed; + style_res->direction.computed = style->direction.computed; + style_res->text_orientation.computed = style->text_orientation.computed; + } + + if (texts == 0 || !set) + return QUERY_STYLE_NOTHING; + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + +int +objects_query_fontfeaturesettings (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + int texts = 0; + + style_res->font_feature_settings.clear(); + + for (auto obj : objects) { + // std::cout << " " << reinterpret_cast<SPObject*>(i->data)->getId() << std::endl; + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + if (style_res->font_feature_settings.set && // + strcmp(style_res->font_feature_settings.value(), + style->font_feature_settings.value())) { + different = true; // different fonts + } + + style_res->font_feature_settings = style->font_feature_settings; + style_res->font_feature_settings.set = true; + } + + if (texts == 0 || !style_res->font_feature_settings.set) { + return QUERY_STYLE_NOTHING; + } + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + + +/** + * Write to style_res the baseline numbers. + */ +static int +objects_query_baselines (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + + // Only baseline-shift at the moment + // We will return: + // If baseline-shift is same for all objects: + // The full baseline-shift data (used for subscripts and superscripts) + // If baseline-shift is different: + // The average baseline-shift (not implemented at the moment as this is complicated June 2010) + SPIBaselineShift old; + old.value = 0.0; + old.computed = 0.0; + + // double baselineshift = 0.0; + bool set = false; + + int texts = 0; + + for (auto obj : objects) { + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + SPIBaselineShift current; + if(style->baseline_shift.set) { + + current.set = style->baseline_shift.set; + current.inherit = style->baseline_shift.inherit; + current.type = style->baseline_shift.type; + current.literal = style->baseline_shift.literal; + current.value = style->baseline_shift.value; + current.computed = style->baseline_shift.computed; + + if( set ) { + if( current.set != old.set || + current.inherit != old.inherit || + current.type != old.type || + current.literal != old.literal || + current.value != old.value || + current.computed != old.computed ) { + // Maybe this needs to be better thought out. + different = true; + } + } + + set = true; + + old.set = current.set; + old.inherit = current.inherit; + old.type = current.type; + old.literal = current.literal; + old.value = current.value; + old.computed = current.computed; + } + } + + if (different || !set ) { + style_res->baseline_shift.set = false; + style_res->baseline_shift.computed = 0.0; + } else { + style_res->baseline_shift.set = old.set; + style_res->baseline_shift.inherit = old.inherit; + style_res->baseline_shift.type = old.type; + style_res->baseline_shift.literal = old.literal; + style_res->baseline_shift.value = old.value; + style_res->baseline_shift.computed = old.computed; + } + + if (texts == 0 || !set) + return QUERY_STYLE_NOTHING; + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + +/** + * Write to style_res the average font family of objects. + */ +int +objects_query_fontfamily (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + int texts = 0; + + style_res->font_family.clear(); + + for (auto obj : objects) { + // std::cout << " " << reinterpret_cast<SPObject*>(i->data)->getId() << std::endl; + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + if (style_res->font_family.set && // + strcmp(style_res->font_family.value(), style->font_family.value())) { + different = true; // different fonts + } + + style_res->font_family = style->font_family; + style_res->font_family.set = true; + } + + if (texts == 0 || !style_res->font_family.set) { + return QUERY_STYLE_NOTHING; + } + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + +static int +objects_query_fontspecification (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + bool different = false; + int texts = 0; + + style_res->font_specification.clear(); + + for (auto obj : objects) { + // std::cout << " " << reinterpret_cast<SPObject*>(i->data)->getId() << std::endl; + if (!isTextualItem(obj)) { + continue; + } + + SPStyle *style = obj->style; + if (!style) { + continue; + } + + texts ++; + + if (style_res->font_specification.set && + g_strcmp0(style_res->font_specification.value(), style->font_specification.value())) { + different = true; // different fonts + } + + if (style->font_specification.set) { + style_res->font_specification = style->font_specification; + style_res->font_specification.set = true; + } + } + + if (texts == 0) { + return QUERY_STYLE_NOTHING; + } + + if (texts > 1) { + if (different) { + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } else { + return QUERY_STYLE_MULTIPLE_SAME; + } + } else { + return QUERY_STYLE_SINGLE; + } +} + +int +objects_query_blend (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + auto blend = SP_CSS_BLEND_NORMAL; + auto blend_prev = blend; + bool same_blend = true; + guint items = 0; + + for (auto obj : objects) { + if (!obj) { + continue; + } + SPStyle *style = obj->style; + if (!style || !dynamic_cast<SPItem *>(obj)) { + continue; + } + + items++; + + if (style->mix_blend_mode.set) { + blend = style->mix_blend_mode.value; + } + // defaults to blend mode = "normal" + else { + if (style->filter.set && style->getFilter()) { + blend = filter_get_legacy_blend(obj); + } else { + blend = SP_CSS_BLEND_NORMAL; + } + } + + if (items > 1 && blend_prev != blend) + same_blend = false; + blend_prev = blend; + } + + if (items > 0) { + style_res->mix_blend_mode.value = blend; + } + + if (items == 0) { + return QUERY_STYLE_NOTHING; + } else if (items == 1) { + return QUERY_STYLE_SINGLE; + } else { + if(same_blend) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } +} + +int objects_query_isolation(const std::vector<SPItem *> &objects, SPStyle *style_res) +{ + auto isolation = SP_CSS_ISOLATION_AUTO; + auto isolation_prev = isolation; + bool same_isolation = true; + guint items = 0; + + for (auto obj : objects) { + if (!obj) { + continue; + } + SPStyle *style = obj->style; + if (!style || !dynamic_cast<SPItem *>(obj)) { + continue; + } + + items++; + + if (style->isolation.set) { + isolation = style->isolation.value; + } + else { + isolation = SP_CSS_ISOLATION_AUTO; + } + + if (items > 1 && isolation_prev != isolation) + same_isolation = false; + isolation_prev = isolation; + } + + if (items > 0) { + style_res->isolation.value = isolation; + } + + if (items == 0) { + return QUERY_STYLE_NOTHING; + } else if (items == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_isolation) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_DIFFERENT; + } +} + +/** + * Write to style_res the average blurring of a list of objects. + */ +int +objects_query_blur (const std::vector<SPItem*> &objects, SPStyle *style_res) +{ + if (objects.empty()) { + /* No objects, set empty */ + return QUERY_STYLE_NOTHING; + } + + float blur_sum = 0; + float blur_prev = -1; + bool same_blur = true; + guint blur_items = 0; + guint items = 0; + + for (auto obj : objects) { + if (!obj) { + continue; + } + SPStyle *style = obj->style; + if (!style) { + continue; + } + SPItem *item = dynamic_cast<SPItem *>(obj); + if (!item) { + continue; + } + + Geom::Affine i2d = item->i2dt_affine(); + + items ++; + + //if object has a filter + if (style->filter.set && style->getFilter()) { + //cycle through filter primitives + for(auto& primitive_obj: style->getFilter()->children) { + SPFilterPrimitive *primitive = dynamic_cast<SPFilterPrimitive *>(&primitive_obj); + if (primitive) { + + //if primitive is gaussianblur + SPGaussianBlur * spblur = dynamic_cast<SPGaussianBlur *>(primitive); + if (spblur) { + float num = spblur->stdDeviation.getNumber(); + float dummy = num * i2d.descrim(); + if (!std::isnan(dummy)) { + blur_sum += dummy; + if (blur_prev != -1 && fabs (num - blur_prev) > 1e-2) // rather low tolerance because difference in blur radii is much harder to notice than e.g. difference in sizes + same_blur = false; + blur_prev = num; + //TODO: deal with opt number, for the moment it's not necessary to the ui. + blur_items ++; + } + } + } + } + } + } + + if (items > 0) { + if (blur_items > 0) + blur_sum /= blur_items; + style_res->filter_gaussianBlur_deviation.value = blur_sum; + } + + if (items == 0) { + return QUERY_STYLE_NOTHING; + } else if (items == 1) { + return QUERY_STYLE_SINGLE; + } else { + if (same_blur) + return QUERY_STYLE_MULTIPLE_SAME; + else + return QUERY_STYLE_MULTIPLE_AVERAGED; + } +} + +/** + * Query the given list of objects for the given property, write + * the result to style, return appropriate flag. + */ +int +sp_desktop_query_style_from_list (const std::vector<SPItem*> &list, SPStyle *style, int property) +{ + if (property == QUERY_STYLE_PROPERTY_FILL) { + return objects_query_fillstroke (list, style, true); + } else if (property == QUERY_STYLE_PROPERTY_STROKE) { + return objects_query_fillstroke (list, style, false); + + } else if (property == QUERY_STYLE_PROPERTY_STROKEWIDTH) { + return objects_query_strokewidth (list, style); + } else if (property == QUERY_STYLE_PROPERTY_STROKEMITERLIMIT) { + return objects_query_miterlimit (list, style); + } else if (property == QUERY_STYLE_PROPERTY_STROKECAP) { + return objects_query_strokecap (list, style); + } else if (property == QUERY_STYLE_PROPERTY_STROKEJOIN) { + return objects_query_strokejoin (list, style); + + } else if (property == QUERY_STYLE_PROPERTY_PAINTORDER) { + return objects_query_paintorder (list, style); + } else if (property == QUERY_STYLE_PROPERTY_MASTEROPACITY) { + return objects_query_opacity (list, style); + + } else if (property == QUERY_STYLE_PROPERTY_FONT_SPECIFICATION) { + return objects_query_fontspecification (list, style); + } else if (property == QUERY_STYLE_PROPERTY_FONTFAMILY) { + return objects_query_fontfamily (list, style); + } else if (property == QUERY_STYLE_PROPERTY_FONTSTYLE) { + return objects_query_fontstyle (list, style); + } else if (property == QUERY_STYLE_PROPERTY_FONTVARIANTS) { + return objects_query_fontvariants (list, style); + } else if (property == QUERY_STYLE_PROPERTY_FONTFEATURESETTINGS) { + return objects_query_fontfeaturesettings (list, style); + } else if (property == QUERY_STYLE_PROPERTY_FONTNUMBERS) { + return objects_query_fontnumbers (list, style); + } else if (property == QUERY_STYLE_PROPERTY_WRITINGMODES) { + return objects_query_writing_modes (list, style); + } else if (property == QUERY_STYLE_PROPERTY_BASELINES) { + return objects_query_baselines (list, style); + + } else if (property == QUERY_STYLE_PROPERTY_BLEND) { + return objects_query_blend (list, style); + } else if (property == QUERY_STYLE_PROPERTY_ISOLATION) { + return objects_query_isolation(list, style); + } else if (property == QUERY_STYLE_PROPERTY_BLUR) { + return objects_query_blur (list, style); + } + return QUERY_STYLE_NOTHING; +} + + +/** + * Query the subselection (if any) or selection on the given desktop for the given property, write + * the result to style, return appropriate flag. + */ +int +sp_desktop_query_style(SPDesktop *desktop, SPStyle *style, int property) +{ + // Used by text tool and in gradient dragging. See connectQueryStyle. + int ret = desktop->_query_style_signal.emit(style, property); + + if (ret != QUERY_STYLE_NOTHING) + return ret; // subselection returned a style, pass it on + + // otherwise, do querying and averaging over selection + if (desktop->selection != nullptr) { + std::vector<SPItem *> vec(desktop->selection->items().begin(), desktop->selection->items().end()); + return sp_desktop_query_style_from_list (vec, style, property); + } + + return QUERY_STYLE_NOTHING; +} + +/** + * Do the same as sp_desktop_query_style for all (defined) style properties, return true if at + * least one of the properties did not return QUERY_STYLE_NOTHING. + */ +bool +sp_desktop_query_style_all (SPDesktop *desktop, SPStyle *query) +{ + int result_family = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTFAMILY); + int result_fstyle = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTSTYLE); + int result_fnumbers = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTNUMBERS); + int result_fill = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FILL); + int result_stroke = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKE); + int result_strokewidth = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEWIDTH); + int result_strokemiterlimit = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEMITERLIMIT); + int result_strokecap = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKECAP); + int result_strokejoin = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEJOIN); + + int result_paintorder = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_PAINTORDER); + + int result_opacity = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_MASTEROPACITY); + int result_blur = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_BLUR); + int result_blend = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_BLEND); + int result_isolation = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_ISOLATION); + + return (result_family != QUERY_STYLE_NOTHING || + result_fstyle != QUERY_STYLE_NOTHING || + result_fnumbers != QUERY_STYLE_NOTHING || + result_fill != QUERY_STYLE_NOTHING || + result_stroke != QUERY_STYLE_NOTHING || + result_opacity != QUERY_STYLE_NOTHING || + result_strokewidth != QUERY_STYLE_NOTHING || + result_strokemiterlimit != QUERY_STYLE_NOTHING || + result_strokecap != QUERY_STYLE_NOTHING || + result_strokejoin != QUERY_STYLE_NOTHING || + result_paintorder != QUERY_STYLE_NOTHING || + result_blur != QUERY_STYLE_NOTHING || + result_isolation != QUERY_STYLE_NOTHING || + result_blend != QUERY_STYLE_NOTHING); +} + + +/* + 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 : |