desktop-style.cpp revision d539b73cdfe899f4791f8f07f926bbc476db190c
/*
* Desktop style management
*
* Authors:
* bulia byak
* verbalshadow
* Jon A. Cruz <jon@joncruz.org>
* Abhishek Sharma
*
* Copyright (C) 2004, 2006 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <string>
#include <cstring>
#include "desktop.h"
#include "color-rgba.h"
#include "svg/css-ostringstream.h"
#include "svg/svg.h"
#include "svg/svg-color.h"
#include "selection.h"
#include "inkscape.h"
#include "style.h"
#include "preferences.h"
#include "sp-use.h"
#include "filters/blend.h"
#include "sp-filter.h"
#include "sp-filter-reference.h"
#include "filters/gaussian-blur.h"
#include "sp-flowtext.h"
#include "sp-flowregion.h"
#include "sp-flowdiv.h"
#include "sp-linear-gradient.h"
#include "sp-pattern.h"
#include "sp-radial-gradient.h"
#include "sp-textpath.h"
#include "sp-tref.h"
#include "sp-tspan.h"
#include "xml/repr.h"
#include "xml/sp-css-attr.h"
#include "libnrtype/font-style-to-pos.h"
#include "sp-path.h"
#include "event-context.h"
#include "desktop-style.h"
#include "svg/svg-icc-color.h"
#include "box3d-side.h"
#include <2geom/math-utils.h>
/**
* 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
if (!SP_IS_ITEM(o))
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).
if (!(skip_lines
&& ((SP_IS_TSPAN(o) && SP_TSPAN(o)->role == SP_TSPAN_ROLE_LINE)
|| SP_IS_FLOWDIV(o)
|| SP_IS_FLOWPARA(o)
|| SP_IS_TEXTPATH(o))
&& !o->getAttribute("style"))
&&
!(SP_IS_FLOWREGION(o) ||
SP_IS_FLOWREGIONEXCLUDE(o) ||
(SP_IS_USE(o) &&
o->parent &&
(SP_IS_FLOWREGION(o->parent) ||
SP_IS_FLOWREGIONEXCLUDE(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(SP_ITEM(o)->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 (SP_IS_USE(o))
return;
for ( SPObject *child = o->firstChild() ; child ; child = child->getNext() ) {
if (sp_repr_css_property(css, "opacity", NULL) != NULL) {
// 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", NULL);
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)
{
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);
for (const GSList *i = desktop->selection->itemList(); i != NULL; i = i->next) {
/* last used styles for 3D box faces are stored separately */
if (SP_IS_BOX3D_SIDE (i->data)) {
const char * descr = box3d_side_axes_string(SP_BOX3D_SIDE(i->data));
if (descr != NULL) {
prefs->mergeStyle(Glib::ustring("/desktop/") + descr + "/style", css_write);
}
}
}
sp_repr_css_attr_unref(css_write);
}
if (!change)
return;
// 2. Emit signal
bool intercepted = desktop->_set_style_signal.emit(css);
/** \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) {
sp_event_context_update_cursor(desktop->event_context);
}
// 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);
for (GSList const *i = desktop->selection->itemList(); i != NULL; i = i->next) {
// If not text, don't apply text attributes (can a group have text attributes?)
if ( SP_IS_TEXT(i->data) || SP_IS_FLOWTEXT(i->data)
|| SP_IS_TSPAN(i->data) || SP_IS_TREF(i->data) || SP_IS_TEXTPATH(i->data)
|| SP_IS_FLOWDIV(i->data) || SP_IS_FLOWPARA(i->data) || SP_IS_FLOWTSPAN(i->data)) {
sp_desktop_apply_css_recursive(SP_OBJECT(i->data), css, true);
} else {
sp_desktop_apply_css_recursive(SP_OBJECT(i->data), 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);
if (!css->attributeList()) {
sp_repr_css_attr_unref(css);
return NULL;
} 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 = NULL;
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") : 0;
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 = NULL;
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") : 0;
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 = NULL;
guint32 r = 0; // if there's no color, return black
if (has_color)
*has_color = false;
if (prefs->getBool(tool + "/usecurrent")) {
css = sp_desktop_get_style(desktop, true);
} else {
css = prefs->getStyle(tool + "/style");
}
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_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_style_new(SP_ACTIVE_DOCUMENT);
sp_style_merge_from_style_string(style, style_str.data());
ret = style->font_size.computed;
sp_style_unref(style);
}
return ret;
}
/** Determine average stroke width, simple method */
// see TODO in dialogs/stroke-style.cpp on how to get rid of this eventually
gdouble
stroke_average_width (GSList const *objects)
{
if (g_slist_length ((GSList *) objects) == 0)
return Geom::infinity();
gdouble avgwidth = 0.0;
bool notstroked = true;
int n_notstroked = 0;
for (GSList const *l = objects; l != NULL; l = l->next) {
if (!SP_IS_ITEM (l->data))
continue;
Geom::Affine i2dt = SP_ITEM(l->data)->i2dt_affine();
SPObject *object = SP_OBJECT(l->data);
double width = object->style->stroke_width.computed * i2dt.descrim();
if ( object->style->stroke.isNone() || IS_NAN(width)) {
++n_notstroked; // do not count nonstroked objects
continue;
} else {
notstroked = false;
}
avgwidth += width;
}
if (notstroked)
return Geom::infinity();
return avgwidth / (g_slist_length ((GSList *) objects) - 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 (GSList *objects, SPStyle *style_res, bool const isfill)
{
if (g_slist_length(objects) == 0) {
/* No objects, set empty */
return QUERY_STYLE_NOTHING;
}
SPIPaint *paint_res = isfill? &style_res->fill : &style_res->stroke;
bool paintImpossible = true;
paint_res->set = TRUE;
SVGICCColor* iccColor = 0;
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 (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
SPStyle *style = obj->style;
if (!style) {
continue;
}
SPIPaint *paint = isfill? &style->fill : &style->stroke;
// We consider paint "effectively set" for anything within text hierarchy
SPObject *parent = obj->parent;
bool paint_effectively_set =
paint->set || (SP_IS_TEXT(parent) || SP_IS_TEXTPATH(parent) || SP_IS_TSPAN(parent)
|| SP_IS_FLOWTEXT(parent) || SP_IS_FLOWDIV(parent) || SP_IS_FLOWPARA(parent)
|| SP_IS_FLOWTSPAN(parent) || SP_IS_FLOWLINE(parent));
// 1. Bail out with QUERY_STYLE_MULTIPLE_DIFFERENT if necessary
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? SP_STYLE_FILL_SERVER (style_res) : SP_STYLE_STROKE_SERVER (style_res);
SPPaintServer *server = isfill? SP_STYLE_FILL_SERVER (style) : SP_STYLE_STROKE_SERVER (style);
if (SP_IS_LINEARGRADIENT (server_res)) {
if (!SP_IS_LINEARGRADIENT(server))
return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
SPGradient *vector = SP_GRADIENT(server)->getVector();
SPGradient *vector_res = SP_GRADIENT(server_res)->getVector();
if (vector_res != vector)
return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
} else if (SP_IS_RADIALGRADIENT (server_res)) {
if (!SP_IS_RADIALGRADIENT(server))
return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
SPGradient *vector = SP_GRADIENT(server)->getVector();
SPGradient *vector_res = SP_GRADIENT(server_res)->getVector();
if (vector_res != vector)
return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
} else if (SP_IS_PATTERN (server_res)) {
if (!SP_IS_PATTERN(server))
return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
SPPattern *pat = pattern_getroot (SP_PATTERN (server));
SPPattern *pat_res = pattern_getroot (SP_PATTERN (server_res));
if (pat_res != pat)
return QUERY_STYLE_MULTIPLE_DIFFERENT; // different pattern roots
}
}
// 2. Sum color, copy server from paint to paint_res
if (paint_res->set && paint_effectively_set && paint->isColor()) {
gfloat d[3];
sp_color_get_rgb_floatv (&paint->value.color, 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 = 0;
}
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 = 0;
}
}
}
// 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->currentcolor = paint->currentcolor;
if (paint_res->set && paint_effectively_set && paint->isPaintserver()) { // copy the server
if (isfill) {
sp_style_set_to_uri_string (style_res, true, style->getFillURI());
} else {
sp_style_set_to_uri_string (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 (g_slist_length(objects) > 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 (GSList *objects, SPStyle *style_res)
{
if (g_slist_length(objects) == 0) {
/* 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 (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
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 (GSList *objects, SPStyle *style_res)
{
if (g_slist_length(objects) == 0) {
/* 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?
int n_stroked = 0;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_ITEM(obj)) {
continue;
}
SPStyle *style = obj->style;
if (!style) {
continue;
}
if ( style->stroke.isNone() && !(
style->marker[SP_MARKER_LOC].set || // stroke width affects markers, so if there's no stroke but only markers then we should
style->marker[SP_MARKER_LOC_START].set || // still calculate the stroke width
style->marker[SP_MARKER_LOC_MID].set ||
style->marker[SP_MARKER_LOC_END].set))
{
continue;
}
noneSet &= style->stroke.isNone();
Geom::Affine i2d = SP_ITEM(obj)->i2dt_affine();
double sw = style->stroke_width.computed * i2d.descrim();
if (!IS_NAN(sw)) {
if (prev_sw != -1 && fabs(sw - prev_sw) > 1e-3)
same_sw = false;
prev_sw = sw;
avgwidth += sw;
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 (GSList *objects, SPStyle *style_res)
{
if (g_slist_length(objects) == 0) {
/* 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 (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_ITEM(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 (GSList *objects, SPStyle *style_res)
{
if (g_slist_length(objects) == 0) {
/* No objects, set empty */
return QUERY_STYLE_NOTHING;
}
int cap = -1;
gdouble prev_cap = -1;
bool same_cap = true;
int n_stroked = 0;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_ITEM(obj)) {
continue;
}
SPStyle *style = obj->style;
if (!style) {
continue;
}
if ( style->stroke.isNone() ) {
continue;
}
n_stroked ++;
if (prev_cap != -1 && style->stroke_linecap.value != prev_cap)
same_cap = false;
prev_cap = style->stroke_linecap.value;
cap = style->stroke_linecap.value;
}
style_res->stroke_linecap.value = 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 (GSList *objects, SPStyle *style_res)
{
if (g_slist_length(objects) == 0) {
/* No objects, set empty */
return QUERY_STYLE_NOTHING;
}
int join = -1;
gdouble prev_join = -1;
bool same_join = true;
int n_stroked = 0;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_ITEM(obj)) {
continue;
}
SPStyle *style = obj->style;
if (!style) {
continue;
}
if ( style->stroke.isNone() ) {
continue;
}
n_stroked ++;
if (prev_join != -1 && style->stroke_linejoin.value != prev_join) {
same_join = false;
}
prev_join = style->stroke_linejoin.value;
join = style->stroke_linejoin.value;
}
style_res->stroke_linejoin.value = 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 average font size and spacing of objects.
*/
int
objects_query_fontnumbers (GSList *objects, SPStyle *style_res)
{
bool different = false;
double size = 0;
double letterspacing = 0;
double wordspacing = 0;
double linespacing = 0;
bool letterspacing_normal = false;
bool wordspacing_normal = false;
bool linespacing_normal = false;
double size_prev = 0;
double letterspacing_prev = 0;
double wordspacing_prev = 0;
double linespacing_prev = 0;
int texts = 0;
int no_size = 0;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
&& !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
&& !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj)) {
continue;
}
SPStyle *style = obj->style;
if (!style) {
continue;
}
texts ++;
double dummy = style->font_size.computed * Geom::Affine(SP_ITEM(obj)->i2dt_affine()).descrim();
if (!IS_NAN(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; /// \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; /// \todo FIXME: we assume non-% units here
wordspacing_normal = false;
}
double linespacing_current;
if (style->line_height.normal) {
linespacing_current = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL;
if (!different && (linespacing_prev == 0 || linespacing_prev == linespacing_current))
linespacing_normal = true;
} else if (style->line_height.unit == SP_CSS_UNIT_PERCENT || style->font_size.computed == 0) {
linespacing_current = style->line_height.value;
linespacing_normal = false;
} else { // we need % here
linespacing_current = style->line_height.computed / style->font_size.computed;
linespacing_normal = false;
}
linespacing += linespacing_current;
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) ||
(linespacing_prev != 0 && linespacing_current != linespacing_prev)) {
different = true;
}
size_prev = style->font_size.computed;
letterspacing_prev = style->letter_spacing.computed;
wordspacing_prev = style->word_spacing.computed;
linespacing_prev = linespacing_current;
// FIXME: we must detect MULTIPLE_DIFFERENT for these too
style_res->text_anchor.computed = style->text_anchor.computed;
style_res->writing_mode.computed = style->writing_mode.computed;
}
if (texts == 0)
return QUERY_STYLE_NOTHING;
if (texts > 1) {
if (texts - no_size > 0) {
size /= (texts - no_size);
}
letterspacing /= texts;
wordspacing /= texts;
linespacing /= 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 = linespacing_normal;
style_res->line_height.computed = linespacing;
style_res->line_height.value = linespacing;
style_res->line_height.unit = SP_CSS_UNIT_PERCENT;
if (texts > 1) {
if (different) {
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 (GSList *objects, SPStyle *style_res)
{
bool different = false;
bool set = false;
int texts = 0;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
&& !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
&& !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
continue;
SPStyle *style = obj->style;
if (!style) {
continue;
}
texts ++;
if (set &&
font_style_to_pos(*style_res).signature() != font_style_to_pos(*style).signature() ) {
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->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;
}
}
/**
* Write to style_res the baseline numbers.
*/
static int
objects_query_baselines (GSList *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 (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
&& !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
&& !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(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 (GSList *objects, SPStyle *style_res)
{
bool different = false;
int texts = 0;
if (style_res->text->font_family.value) {
g_free(style_res->text->font_family.value);
style_res->text->font_family.value = NULL;
}
style_res->text->font_family.set = FALSE;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
// std::cout << " " << reinterpret_cast<SPObject*>(i->data)->getId() << std::endl;
if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
&& !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
&& !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj)) {
continue;
}
SPStyle *style = obj->style;
if (!style) {
continue;
}
texts ++;
if (style_res->text->font_family.value && style->text->font_family.value &&
strcmp (style_res->text->font_family.value, style->text->font_family.value)) {
different = true; // different fonts
}
if (style_res->text->font_family.value) {
g_free(style_res->text->font_family.value);
style_res->text->font_family.value = NULL;
}
style_res->text->font_family.set = TRUE;
style_res->text->font_family.value = g_strdup(style->text->font_family.value);
}
if (texts == 0 || !style_res->text->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 (GSList *objects, SPStyle *style_res)
{
bool different = false;
int texts = 0;
if (style_res->text->font_specification.value) {
g_free(style_res->text->font_specification.value);
style_res->text->font_specification.value = NULL;
}
style_res->text->font_specification.set = FALSE;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
// std::cout << " " << reinterpret_cast<SPObject*>(i->data)->getId() << std::endl;
if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
&& !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
&& !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj)) {
continue;
}
SPStyle *style = obj->style;
if (!style) {
continue;
}
texts ++;
if (style_res->text->font_specification.value && style_res->text->font_specification.set &&
style->text->font_specification.value && style->text->font_specification.set &&
strcmp (style_res->text->font_specification.value, style->text->font_specification.value)) {
different = true; // different fonts
}
if (style->text->font_specification.set) {
if (style_res->text->font_specification.value) {
g_free(style_res->text->font_specification.value);
style_res->text->font_specification.value = NULL;
}
style_res->text->font_specification.set = TRUE;
style_res->text->font_specification.value = g_strdup(style->text->font_specification.value);
}
}
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;
}
}
static int
objects_query_blend (GSList *objects, SPStyle *style_res)
{
const int empty_prev = -2;
const int complex_filter = 5;
int blend = 0;
float blend_prev = empty_prev;
bool same_blend = true;
guint items = 0;
for (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
SPStyle *style = obj->style;
if (!style || !SP_IS_ITEM(obj)) {
continue;
}
items++;
//if object has a filter
if (style->filter.set && style->getFilter()) {
int blurcount = 0;
int blendcount = 0;
// determine whether filter is simple (blend and/or blur) or complex
for(SPObject *primitive_obj = style->getFilter()->children;
primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
primitive_obj = primitive_obj->next) {
SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
if(SP_IS_FEBLEND(primitive))
++blendcount;
else if(SP_IS_GAUSSIANBLUR(primitive))
++blurcount;
else {
blurcount = complex_filter;
break;
}
}
// simple filter
if(blurcount == 1 || blendcount == 1) {
for(SPObject *primitive_obj = style->getFilter()->children;
primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
primitive_obj = primitive_obj->next) {
if(SP_IS_FEBLEND(primitive_obj)) {
SPFeBlend *spblend = SP_FEBLEND(primitive_obj);
blend = spblend->blend_mode;
}
}
}
else {
blend = complex_filter;
}
}
// defaults to blend mode = "normal"
else {
blend = 0;
}
if(blend_prev != empty_prev && blend_prev != blend)
same_blend = false;
blend_prev = blend;
}
if (items > 0) {
style_res->filter_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;
}
}
/**
* Write to style_res the average blurring of a list of objects.
*/
int
objects_query_blur (GSList *objects, SPStyle *style_res)
{
if (g_slist_length(objects) == 0) {
/* 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 (GSList const *i = objects; i != NULL; i = i->next) {
SPObject *obj = SP_OBJECT (i->data);
SPStyle *style = obj->style;
if (!style) {
continue;
}
if (!SP_IS_ITEM(obj)) {
continue;
}
Geom::Affine i2d = SP_ITEM(obj)->i2dt_affine();
items ++;
//if object has a filter
if (style->filter.set && style->getFilter()) {
//cycle through filter primitives
SPObject *primitive_obj = style->getFilter()->children;
while (primitive_obj) {
if (SP_IS_FILTER_PRIMITIVE(primitive_obj)) {
SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
//if primitive is gaussianblur
if(SP_IS_GAUSSIANBLUR(primitive)) {
SPGaussianBlur * spblur = SP_GAUSSIANBLUR(primitive);
float num = spblur->stdDeviation.getNumber();
float dummy = num * i2d.descrim();
if (!IS_NAN(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 ++;
}
}
}
primitive_obj = primitive_obj->next;
}
}
}
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 (GSList *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_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_FONTNUMBERS) {
return objects_query_fontnumbers (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_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)
{
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 != NULL) {
return sp_desktop_query_style_from_list ((GSList *) desktop->selection->itemList(), 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_opacity = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_MASTEROPACITY);
int result_blur = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_BLUR);
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_blur != 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 :