1 #define __SP_DESKTOP_STYLE_C__
3 /** \file
4 * Desktop style management
5 *
6 * Authors:
7 * bulia byak
8 * verbalshadow
9 *
10 * Copyright (C) 2004, 2006 authors
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #include "desktop.h"
16 #include "color-rgba.h"
17 #include "svg/css-ostringstream.h"
18 #include "svg/svg.h"
19 #include "svg/svg-color.h"
20 #include "selection.h"
21 #include "inkscape.h"
22 #include "style.h"
23 #include "prefs-utils.h"
24 #include "sp-use.h"
25 #include "sp-feblend.h"
26 #include "sp-filter.h"
27 #include "sp-filter-reference.h"
28 #include "sp-gaussian-blur.h"
29 #include "sp-flowtext.h"
30 #include "sp-flowregion.h"
31 #include "sp-flowdiv.h"
32 #include "sp-linear-gradient.h"
33 #include "sp-pattern.h"
34 #include "sp-radial-gradient.h"
35 #include "sp-textpath.h"
36 #include "sp-tref.h"
37 #include "sp-tspan.h"
38 #include "xml/repr.h"
39 #include "libnrtype/font-style-to-pos.h"
40 #include "sp-path.h"
42 #include "desktop-style.h"
43 #include "svg/svg-icc-color.h"
44 #include "box3d-side.h"
46 /**
47 * Set color on selection on desktop.
48 */
49 void
50 sp_desktop_set_color(SPDesktop *desktop, ColorRGBA const &color, bool is_relative, bool fill)
51 {
52 /// \todo relative color setting
53 if (is_relative) {
54 g_warning("FIXME: relative color setting not yet implemented");
55 return;
56 }
58 guint32 rgba = SP_RGBA32_F_COMPOSE(color[0], color[1], color[2], color[3]);
59 gchar b[64];
60 sp_svg_write_color(b, sizeof(b), rgba);
61 SPCSSAttr *css = sp_repr_css_attr_new();
62 if (fill) {
63 sp_repr_css_set_property(css, "fill", b);
64 Inkscape::CSSOStringStream osalpha;
65 osalpha << color[3];
66 sp_repr_css_set_property(css, "fill-opacity", osalpha.str().c_str());
67 } else {
68 sp_repr_css_set_property(css, "stroke", b);
69 Inkscape::CSSOStringStream osalpha;
70 osalpha << color[3];
71 sp_repr_css_set_property(css, "stroke-opacity", osalpha.str().c_str());
72 }
74 sp_desktop_set_style(desktop, css);
76 sp_repr_css_attr_unref(css);
77 }
79 /**
80 * Apply style on object and children, recursively.
81 */
82 void
83 sp_desktop_apply_css_recursive(SPObject *o, SPCSSAttr *css, bool skip_lines)
84 {
85 // non-items should not have style
86 if (!SP_IS_ITEM(o))
87 return;
89 // 1. tspans with role=line are not regular objects in that they are not supposed to have style of their own,
90 // but must always inherit from the parent text. Same for textPath.
91 // However, if the line tspan or textPath contains some style (old file?), we reluctantly set our style to it too.
93 // 2. Generally we allow setting style on clones, but when it's inside flowRegion, do not touch
94 // it, be it clone or not; it's just styleless shape (because that's how Inkscape does
95 // flowtext).
97 if (!(skip_lines
98 && ((SP_IS_TSPAN(o) && SP_TSPAN(o)->role == SP_TSPAN_ROLE_LINE)
99 || SP_IS_FLOWDIV(o)
100 || SP_IS_FLOWPARA(o)
101 || SP_IS_TEXTPATH(o))
102 && !SP_OBJECT_REPR(o)->attribute("style"))
103 &&
104 !(SP_IS_FLOWREGION(o) ||
105 SP_IS_FLOWREGIONEXCLUDE(o) ||
106 (SP_IS_USE(o) &&
107 SP_OBJECT_PARENT(o) &&
108 (SP_IS_FLOWREGION(SP_OBJECT_PARENT(o)) ||
109 SP_IS_FLOWREGIONEXCLUDE(SP_OBJECT_PARENT(o))
110 )
111 )
112 )
113 ) {
115 SPCSSAttr *css_set = sp_repr_css_attr_new();
116 sp_repr_css_merge(css_set, css);
118 // Scale the style by the inverse of the accumulated parent transform in the paste context.
119 {
120 NR::Matrix const local(sp_item_i2doc_affine(SP_ITEM(o)));
121 double const ex(NR::expansion(local));
122 if ( ( ex != 0. )
123 && ( ex != 1. ) ) {
124 sp_css_attr_scale(css_set, 1/ex);
125 }
126 }
128 sp_repr_css_change(SP_OBJECT_REPR(o), css_set, "style");
130 sp_repr_css_attr_unref(css_set);
131 }
133 // setting style on child of clone spills into the clone original (via shared repr), don't do it!
134 if (SP_IS_USE(o))
135 return;
137 for (SPObject *child = sp_object_first_child(SP_OBJECT(o)) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
138 if (sp_repr_css_property(css, "opacity", NULL) != NULL) {
139 // Unset properties which are accumulating and thus should not be set recursively.
140 // 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.
141 SPCSSAttr *css_recurse = sp_repr_css_attr_new();
142 sp_repr_css_merge(css_recurse, css);
143 sp_repr_css_set_property(css_recurse, "opacity", NULL);
144 sp_desktop_apply_css_recursive(child, css_recurse, skip_lines);
145 sp_repr_css_attr_unref(css_recurse);
146 } else {
147 sp_desktop_apply_css_recursive(child, css, skip_lines);
148 }
149 }
150 }
152 /**
153 * Apply style on selection on desktop.
154 */
155 void
156 sp_desktop_set_style(SPDesktop *desktop, SPCSSAttr *css, bool change, bool write_current)
157 {
158 if (write_current) {
159 // 1. Set internal value
160 sp_repr_css_merge(desktop->current, css);
162 // 1a. Write to prefs; make a copy and unset any URIs first
163 SPCSSAttr *css_write = sp_repr_css_attr_new();
164 sp_repr_css_merge(css_write, css);
165 sp_css_attr_unset_uris(css_write);
166 sp_repr_css_change(inkscape_get_repr(INKSCAPE, "desktop"), css_write, "style");
167 for (const GSList *i = desktop->selection->itemList(); i != NULL; i = i->next) {
168 /* last used styles for 3D box faces are stored separately */
169 if (SP_IS_BOX3D_SIDE (i->data)) {
170 const char * descr = box3d_side_axes_string(SP_BOX3D_SIDE(i->data));
171 if (descr != NULL) {
172 gchar *style_grp = g_strconcat ("desktop.", descr, NULL);
173 sp_repr_css_change(inkscape_get_repr(INKSCAPE, style_grp), css_write, "style");
174 g_free (style_grp);
175 }
176 }
177 }
178 sp_repr_css_attr_unref(css_write);
179 }
181 if (!change)
182 return;
184 // 2. Emit signal
185 bool intercepted = desktop->_set_style_signal.emit(css);
187 /** \todo
188 * FIXME: in set_style, compensate pattern and gradient fills, stroke width,
189 * rect corners, font size for the object's own transform so that pasting
190 * fills does not depend on preserve/optimize.
191 */
193 // 3. If nobody has intercepted the signal, apply the style to the selection
194 if (!intercepted) {
195 for (GSList const *i = desktop->selection->itemList(); i != NULL; i = i->next) {
196 /// \todo if the style is text-only, apply only to texts?
197 sp_desktop_apply_css_recursive(SP_OBJECT(i->data), css, true);
198 }
199 }
200 }
202 /**
203 * Return the desktop's current style.
204 */
205 SPCSSAttr *
206 sp_desktop_get_style(SPDesktop *desktop, bool with_text)
207 {
208 SPCSSAttr *css = sp_repr_css_attr_new();
209 sp_repr_css_merge(css, desktop->current);
210 if (!css->attributeList()) {
211 sp_repr_css_attr_unref(css);
212 return NULL;
213 } else {
214 if (!with_text) {
215 css = sp_css_attr_unset_text(css);
216 }
217 return css;
218 }
219 }
221 /**
222 * Return the desktop's current color.
223 */
224 guint32
225 sp_desktop_get_color(SPDesktop *desktop, bool is_fill)
226 {
227 guint32 r = 0; // if there's no color, return black
228 gchar const *property = sp_repr_css_property(desktop->current,
229 is_fill ? "fill" : "stroke",
230 "#000");
232 if (desktop->current && property) { // if there is style and the property in it,
233 if (strncmp(property, "url", 3)) { // and if it's not url,
234 // read it
235 r = sp_svg_read_color(property, r);
236 }
237 }
239 return r;
240 }
242 double
243 sp_desktop_get_master_opacity_tool(SPDesktop *desktop, char const *tool)
244 {
245 SPCSSAttr *css = NULL;
246 gfloat value = 1.0; // default if nothing else found
247 if (prefs_get_double_attribute(tool, "usecurrent", 0) != 0) {
248 css = sp_desktop_get_style(desktop, true);
249 } else {
250 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
251 if (tool_repr) {
252 css = sp_repr_css_attr_inherited(tool_repr, "style");
253 }
254 }
256 if (css) {
257 gchar const *property = css ? sp_repr_css_property(css, "opacity", "1.000") : 0;
259 if (desktop->current && property) { // if there is style and the property in it,
260 if ( !sp_svg_number_read_f(property, &value) ) {
261 value = 1.0; // things failed. set back to the default
262 }
263 }
265 sp_repr_css_attr_unref(css);
266 }
268 return value;
269 }
270 double
271 sp_desktop_get_opacity_tool(SPDesktop *desktop, char const *tool, bool is_fill)
272 {
273 SPCSSAttr *css = NULL;
274 gfloat value = 1.0; // default if nothing else found
275 if (prefs_get_double_attribute(tool, "usecurrent", 0) != 0) {
276 css = sp_desktop_get_style(desktop, true);
277 } else {
278 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
279 if (tool_repr) {
280 css = sp_repr_css_attr_inherited(tool_repr, "style");
281 }
282 }
284 if (css) {
285 gchar const *property = css ? sp_repr_css_property(css, is_fill ? "fill-opacity": "stroke-opacity", "1.000") : 0;
287 if (desktop->current && property) { // if there is style and the property in it,
288 if ( !sp_svg_number_read_f(property, &value) ) {
289 value = 1.0; // things failed. set back to the default
290 }
291 }
293 sp_repr_css_attr_unref(css);
294 }
296 return value;
297 }
298 guint32
299 sp_desktop_get_color_tool(SPDesktop *desktop, char const *tool, bool is_fill)
300 {
301 SPCSSAttr *css = NULL;
302 guint32 r = 0; // if there's no color, return black
303 if (prefs_get_int_attribute(tool, "usecurrent", 0) != 0) {
304 css = sp_desktop_get_style(desktop, true);
305 } else {
306 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
307 if (tool_repr) {
308 css = sp_repr_css_attr_inherited(tool_repr, "style");
309 }
310 }
312 if (css) {
313 gchar const *property = sp_repr_css_property(css, is_fill ? "fill" : "stroke", "#000");
315 if (desktop->current && property) { // if there is style and the property in it,
316 if (strncmp(property, "url", 3)) { // and if it's not url,
317 // read it
318 r = sp_svg_read_color(property, r);
319 }
320 }
322 sp_repr_css_attr_unref(css);
323 }
325 return r | 0xff;
326 }
327 /**
328 * Apply the desktop's current style or the tool style to repr.
329 */
330 void
331 sp_desktop_apply_style_tool(SPDesktop *desktop, Inkscape::XML::Node *repr, char const *tool, bool with_text)
332 {
333 SPCSSAttr *css_current = sp_desktop_get_style(desktop, with_text);
334 if ((prefs_get_int_attribute(tool, "usecurrent", 0) != 0) && css_current) {
335 sp_repr_css_set(repr, css_current, "style");
336 } else {
337 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
338 if (tool_repr) {
339 SPCSSAttr *css = sp_repr_css_attr_inherited(tool_repr, "style");
340 sp_repr_css_set(repr, css, "style");
341 sp_repr_css_attr_unref(css);
342 }
343 }
344 if (css_current) {
345 sp_repr_css_attr_unref(css_current);
346 }
347 }
349 /**
350 * Returns the font size (in SVG pixels) of the text tool style (if text
351 * tool uses its own style) or desktop style (otherwise).
352 */
353 double
354 sp_desktop_get_font_size_tool(SPDesktop *desktop)
355 {
356 (void)desktop; // TODO cleanup
357 gchar const *desktop_style = inkscape_get_repr(INKSCAPE, "desktop")->attribute("style");
358 gchar const *style_str = NULL;
359 if ((prefs_get_int_attribute("tools.text", "usecurrent", 0) != 0) && desktop_style) {
360 style_str = desktop_style;
361 } else {
362 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, "tools.text");
363 if (tool_repr) {
364 style_str = tool_repr->attribute("style");
365 }
366 }
368 double ret = 12;
369 if (style_str) {
370 SPStyle *style = sp_style_new(SP_ACTIVE_DOCUMENT);
371 sp_style_merge_from_style_string(style, style_str);
372 ret = style->font_size.computed;
373 sp_style_unref(style);
374 }
375 return ret;
376 }
378 /** Determine average stroke width, simple method */
379 // see TODO in dialogs/stroke-style.cpp on how to get rid of this eventually
380 gdouble
381 stroke_average_width (GSList const *objects)
382 {
383 if (g_slist_length ((GSList *) objects) == 0)
384 return NR_HUGE;
386 gdouble avgwidth = 0.0;
387 bool notstroked = true;
388 int n_notstroked = 0;
390 for (GSList const *l = objects; l != NULL; l = l->next) {
391 if (!SP_IS_ITEM (l->data))
392 continue;
394 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(l->data));
396 SPObject *object = SP_OBJECT(l->data);
398 if ( object->style->stroke.isNone() ) {
399 ++n_notstroked; // do not count nonstroked objects
400 continue;
401 } else {
402 notstroked = false;
403 }
405 avgwidth += SP_OBJECT_STYLE (object)->stroke_width.computed * i2d.expansion();
406 }
408 if (notstroked)
409 return NR_HUGE;
411 return avgwidth / (g_slist_length ((GSList *) objects) - n_notstroked);
412 }
414 /**
415 * Write to style_res the average fill or stroke of list of objects, if applicable.
416 */
417 int
418 objects_query_fillstroke (GSList *objects, SPStyle *style_res, bool const isfill)
419 {
420 if (g_slist_length(objects) == 0) {
421 /* No objects, set empty */
422 return QUERY_STYLE_NOTHING;
423 }
425 SPIPaint *paint_res = isfill? &style_res->fill : &style_res->stroke;
426 bool paintImpossible = true;
427 paint_res->set = TRUE;
429 SVGICCColor* iccColor = 0;
430 bool iccSeen = false;
431 gfloat c[4];
432 c[0] = c[1] = c[2] = c[3] = 0.0;
433 gint num = 0;
435 gfloat prev[3];
436 prev[0] = prev[1] = prev[2] = 0.0;
437 bool same_color = true;
439 for (GSList const *i = objects; i != NULL; i = i->next) {
440 SPObject *obj = SP_OBJECT (i->data);
441 SPStyle *style = SP_OBJECT_STYLE (obj);
442 if (!style) continue;
444 SPIPaint *paint = isfill? &style->fill : &style->stroke;
446 // We consider paint "effectively set" for anything within text hierarchy
447 SPObject *parent = SP_OBJECT_PARENT (obj);
448 bool paint_effectively_set =
449 paint->set || (SP_IS_TEXT(parent) || SP_IS_TEXTPATH(parent) || SP_IS_TSPAN(parent)
450 || SP_IS_FLOWTEXT(parent) || SP_IS_FLOWDIV(parent) || SP_IS_FLOWPARA(parent)
451 || SP_IS_FLOWTSPAN(parent) || SP_IS_FLOWLINE(parent));
453 // 1. Bail out with QUERY_STYLE_MULTIPLE_DIFFERENT if necessary
455 if ((!paintImpossible) && (!paint->isSameType(*paint_res) || (paint_res->set != paint_effectively_set))) {
456 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different types of paint
457 }
459 if (paint_res->set && paint->set && paint_res->isPaintserver()) {
460 // both previous paint and this paint were a server, see if the servers are compatible
462 SPPaintServer *server_res = isfill? SP_STYLE_FILL_SERVER (style_res) : SP_STYLE_STROKE_SERVER (style_res);
463 SPPaintServer *server = isfill? SP_STYLE_FILL_SERVER (style) : SP_STYLE_STROKE_SERVER (style);
465 if (SP_IS_LINEARGRADIENT (server_res)) {
467 if (!SP_IS_LINEARGRADIENT(server))
468 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
470 SPGradient *vector = sp_gradient_get_vector ( SP_GRADIENT (server), FALSE );
471 SPGradient *vector_res = sp_gradient_get_vector ( SP_GRADIENT (server_res), FALSE );
472 if (vector_res != vector)
473 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
475 } else if (SP_IS_RADIALGRADIENT (server_res)) {
477 if (!SP_IS_RADIALGRADIENT(server))
478 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
480 SPGradient *vector = sp_gradient_get_vector ( SP_GRADIENT (server), FALSE );
481 SPGradient *vector_res = sp_gradient_get_vector ( SP_GRADIENT (server_res), FALSE );
482 if (vector_res != vector)
483 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
485 } else if (SP_IS_PATTERN (server_res)) {
487 if (!SP_IS_PATTERN(server))
488 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
490 SPPattern *pat = pattern_getroot (SP_PATTERN (server));
491 SPPattern *pat_res = pattern_getroot (SP_PATTERN (server_res));
492 if (pat_res != pat)
493 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different pattern roots
494 }
495 }
497 // 2. Sum color, copy server from paint to paint_res
499 if (paint_res->set && paint_effectively_set && paint->isColor()) {
500 gfloat d[3];
501 sp_color_get_rgb_floatv (&paint->value.color, d);
503 // Check if this color is the same as previous
504 if (paintImpossible) {
505 prev[0] = d[0];
506 prev[1] = d[1];
507 prev[2] = d[2];
508 paint_res->setColor(d[0], d[1], d[2]);
509 iccColor = paint->value.color.icc;
510 iccSeen = true;
511 } else {
512 if (same_color && (prev[0] != d[0] || prev[1] != d[1] || prev[2] != d[2]))
513 same_color = false;
514 if ( iccSeen ) {
515 if(paint->value.color.icc) {
516 // TODO fix this
517 iccColor = 0;
518 }
519 }
520 }
522 // average color
523 c[0] += d[0];
524 c[1] += d[1];
525 c[2] += d[2];
526 c[3] += SP_SCALE24_TO_FLOAT (isfill? style->fill_opacity.value : style->stroke_opacity.value);
527 num ++;
528 }
530 paintImpossible = false;
531 paint_res->colorSet = paint->colorSet;
532 paint_res->currentcolor = paint->currentcolor;
533 if (paint_res->set && paint_effectively_set && paint->isPaintserver()) { // copy the server
534 if (isfill) {
535 sp_style_set_to_uri_string (style_res, true, style->getFillURI());
536 } else {
537 sp_style_set_to_uri_string (style_res, false, style->getStrokeURI());
538 }
539 }
540 paint_res->set = paint_effectively_set;
541 style_res->fill_rule.computed = style->fill_rule.computed; // no averaging on this, just use the last one
542 }
544 // After all objects processed, divide the color if necessary and return
545 if (paint_res->set && paint_res->isColor()) { // set the color
546 g_assert (num >= 1);
548 c[0] /= num;
549 c[1] /= num;
550 c[2] /= num;
551 c[3] /= num;
552 paint_res->setColor(c[0], c[1], c[2]);
553 if (isfill) {
554 style_res->fill_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]);
555 } else {
556 style_res->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]);
557 }
560 if ( iccSeen && iccColor ) {
561 // TODO check for existing
562 SVGICCColor* tmp = new SVGICCColor(*iccColor);
563 paint_res->value.color.icc = tmp;
564 }
566 if (num > 1) {
567 if (same_color)
568 return QUERY_STYLE_MULTIPLE_SAME;
569 else
570 return QUERY_STYLE_MULTIPLE_AVERAGED;
571 } else {
572 return QUERY_STYLE_SINGLE;
573 }
574 }
576 // Not color
577 if (g_slist_length(objects) > 1) {
578 return QUERY_STYLE_MULTIPLE_SAME;
579 } else {
580 return QUERY_STYLE_SINGLE;
581 }
582 }
584 /**
585 * Write to style_res the average opacity of a list of objects.
586 */
587 int
588 objects_query_opacity (GSList *objects, SPStyle *style_res)
589 {
590 if (g_slist_length(objects) == 0) {
591 /* No objects, set empty */
592 return QUERY_STYLE_NOTHING;
593 }
595 gdouble opacity_sum = 0;
596 gdouble opacity_prev = -1;
597 bool same_opacity = true;
598 guint opacity_items = 0;
601 for (GSList const *i = objects; i != NULL; i = i->next) {
602 SPObject *obj = SP_OBJECT (i->data);
603 SPStyle *style = SP_OBJECT_STYLE (obj);
604 if (!style) continue;
606 double opacity = SP_SCALE24_TO_FLOAT(style->opacity.value);
607 opacity_sum += opacity;
608 if (opacity_prev != -1 && opacity != opacity_prev)
609 same_opacity = false;
610 opacity_prev = opacity;
611 opacity_items ++;
612 }
613 if (opacity_items > 1)
614 opacity_sum /= opacity_items;
616 style_res->opacity.value = SP_SCALE24_FROM_FLOAT(opacity_sum);
618 if (opacity_items == 0) {
619 return QUERY_STYLE_NOTHING;
620 } else if (opacity_items == 1) {
621 return QUERY_STYLE_SINGLE;
622 } else {
623 if (same_opacity)
624 return QUERY_STYLE_MULTIPLE_SAME;
625 else
626 return QUERY_STYLE_MULTIPLE_AVERAGED;
627 }
628 }
630 /**
631 * Write to style_res the average stroke width of a list of objects.
632 */
633 int
634 objects_query_strokewidth (GSList *objects, SPStyle *style_res)
635 {
636 if (g_slist_length(objects) == 0) {
637 /* No objects, set empty */
638 return QUERY_STYLE_NOTHING;
639 }
641 gdouble avgwidth = 0.0;
643 gdouble prev_sw = -1;
644 bool same_sw = true;
646 int n_stroked = 0;
648 for (GSList const *i = objects; i != NULL; i = i->next) {
649 SPObject *obj = SP_OBJECT (i->data);
650 if (!SP_IS_ITEM(obj)) continue;
651 SPStyle *style = SP_OBJECT_STYLE (obj);
652 if (!style) continue;
654 if ( style->stroke.isNone() ) {
655 continue;
656 }
658 n_stroked ++;
660 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(obj));
661 double sw = style->stroke_width.computed * i2d.expansion();
663 if (prev_sw != -1 && fabs(sw - prev_sw) > 1e-3)
664 same_sw = false;
665 prev_sw = sw;
667 avgwidth += sw;
668 }
670 if (n_stroked > 1)
671 avgwidth /= (n_stroked);
673 style_res->stroke_width.computed = avgwidth;
674 style_res->stroke_width.set = true;
676 if (n_stroked == 0) {
677 return QUERY_STYLE_NOTHING;
678 } else if (n_stroked == 1) {
679 return QUERY_STYLE_SINGLE;
680 } else {
681 if (same_sw)
682 return QUERY_STYLE_MULTIPLE_SAME;
683 else
684 return QUERY_STYLE_MULTIPLE_AVERAGED;
685 }
686 }
688 /**
689 * Write to style_res the average miter limit of a list of objects.
690 */
691 int
692 objects_query_miterlimit (GSList *objects, SPStyle *style_res)
693 {
694 if (g_slist_length(objects) == 0) {
695 /* No objects, set empty */
696 return QUERY_STYLE_NOTHING;
697 }
699 gdouble avgml = 0.0;
700 int n_stroked = 0;
702 gdouble prev_ml = -1;
703 bool same_ml = true;
705 for (GSList const *i = objects; i != NULL; i = i->next) {
706 SPObject *obj = SP_OBJECT (i->data);
707 if (!SP_IS_ITEM(obj)) continue;
708 SPStyle *style = SP_OBJECT_STYLE (obj);
709 if (!style) continue;
711 if ( style->stroke.isNone() ) {
712 continue;
713 }
715 n_stroked ++;
717 if (prev_ml != -1 && fabs(style->stroke_miterlimit.value - prev_ml) > 1e-3)
718 same_ml = false;
719 prev_ml = style->stroke_miterlimit.value;
721 avgml += style->stroke_miterlimit.value;
722 }
724 if (n_stroked > 1)
725 avgml /= (n_stroked);
727 style_res->stroke_miterlimit.value = avgml;
728 style_res->stroke_miterlimit.set = true;
730 if (n_stroked == 0) {
731 return QUERY_STYLE_NOTHING;
732 } else if (n_stroked == 1) {
733 return QUERY_STYLE_SINGLE;
734 } else {
735 if (same_ml)
736 return QUERY_STYLE_MULTIPLE_SAME;
737 else
738 return QUERY_STYLE_MULTIPLE_AVERAGED;
739 }
740 }
742 /**
743 * Write to style_res the stroke cap of a list of objects.
744 */
745 int
746 objects_query_strokecap (GSList *objects, SPStyle *style_res)
747 {
748 if (g_slist_length(objects) == 0) {
749 /* No objects, set empty */
750 return QUERY_STYLE_NOTHING;
751 }
753 int cap = -1;
754 gdouble prev_cap = -1;
755 bool same_cap = true;
756 int n_stroked = 0;
758 for (GSList const *i = objects; i != NULL; i = i->next) {
759 SPObject *obj = SP_OBJECT (i->data);
760 if (!SP_IS_ITEM(obj)) continue;
761 SPStyle *style = SP_OBJECT_STYLE (obj);
762 if (!style) continue;
764 if ( style->stroke.isNone() ) {
765 continue;
766 }
768 n_stroked ++;
770 if (prev_cap != -1 && style->stroke_linecap.value != prev_cap)
771 same_cap = false;
772 prev_cap = style->stroke_linecap.value;
774 cap = style->stroke_linecap.value;
775 }
777 style_res->stroke_linecap.value = cap;
778 style_res->stroke_linecap.set = true;
780 if (n_stroked == 0) {
781 return QUERY_STYLE_NOTHING;
782 } else if (n_stroked == 1) {
783 return QUERY_STYLE_SINGLE;
784 } else {
785 if (same_cap)
786 return QUERY_STYLE_MULTIPLE_SAME;
787 else
788 return QUERY_STYLE_MULTIPLE_DIFFERENT;
789 }
790 }
792 /**
793 * Write to style_res the stroke join of a list of objects.
794 */
795 int
796 objects_query_strokejoin (GSList *objects, SPStyle *style_res)
797 {
798 if (g_slist_length(objects) == 0) {
799 /* No objects, set empty */
800 return QUERY_STYLE_NOTHING;
801 }
803 int join = -1;
804 gdouble prev_join = -1;
805 bool same_join = true;
806 int n_stroked = 0;
808 for (GSList const *i = objects; i != NULL; i = i->next) {
809 SPObject *obj = SP_OBJECT (i->data);
810 if (!SP_IS_ITEM(obj)) continue;
811 SPStyle *style = SP_OBJECT_STYLE (obj);
812 if (!style) continue;
814 if ( style->stroke.isNone() ) {
815 continue;
816 }
818 n_stroked ++;
820 if (prev_join != -1 && style->stroke_linejoin.value != prev_join)
821 same_join = false;
822 prev_join = style->stroke_linejoin.value;
824 join = style->stroke_linejoin.value;
825 }
827 style_res->stroke_linejoin.value = join;
828 style_res->stroke_linejoin.set = true;
830 if (n_stroked == 0) {
831 return QUERY_STYLE_NOTHING;
832 } else if (n_stroked == 1) {
833 return QUERY_STYLE_SINGLE;
834 } else {
835 if (same_join)
836 return QUERY_STYLE_MULTIPLE_SAME;
837 else
838 return QUERY_STYLE_MULTIPLE_DIFFERENT;
839 }
840 }
842 /**
843 * Write to style_res the average font size and spacing of objects.
844 */
845 int
846 objects_query_fontnumbers (GSList *objects, SPStyle *style_res)
847 {
848 bool different = false;
850 double size = 0;
851 double letterspacing = 0;
852 double linespacing = 0;
853 bool linespacing_normal = false;
854 bool letterspacing_normal = false;
856 double size_prev = 0;
857 double letterspacing_prev = 0;
858 double linespacing_prev = 0;
860 /// \todo FIXME: add word spacing, kerns? rotates?
862 int texts = 0;
864 for (GSList const *i = objects; i != NULL; i = i->next) {
865 SPObject *obj = SP_OBJECT (i->data);
867 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
868 && !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
869 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
870 continue;
872 SPStyle *style = SP_OBJECT_STYLE (obj);
873 if (!style) continue;
875 texts ++;
876 size += style->font_size.computed * NR::expansion(sp_item_i2d_affine(SP_ITEM(obj))); /// \todo FIXME: we assume non-% units here
878 if (style->letter_spacing.normal) {
879 if (!different && (letterspacing_prev == 0 || letterspacing_prev == letterspacing))
880 letterspacing_normal = true;
881 } else {
882 letterspacing += style->letter_spacing.computed; /// \todo FIXME: we assume non-% units here
883 letterspacing_normal = false;
884 }
886 double linespacing_current;
887 if (style->line_height.normal) {
888 linespacing_current = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL;
889 if (!different && (linespacing_prev == 0 || linespacing_prev == linespacing_current))
890 linespacing_normal = true;
891 } else if (style->line_height.unit == SP_CSS_UNIT_PERCENT || style->font_size.computed == 0) {
892 linespacing_current = style->line_height.value;
893 linespacing_normal = false;
894 } else { // we need % here
895 linespacing_current = style->line_height.computed / style->font_size.computed;
896 linespacing_normal = false;
897 }
898 linespacing += linespacing_current;
900 if ((size_prev != 0 && style->font_size.computed != size_prev) ||
901 (letterspacing_prev != 0 && style->letter_spacing.computed != letterspacing_prev) ||
902 (linespacing_prev != 0 && linespacing_current != linespacing_prev)) {
903 different = true;
904 }
906 size_prev = style->font_size.computed;
907 letterspacing_prev = style->letter_spacing.computed;
908 linespacing_prev = linespacing_current;
910 // FIXME: we must detect MULTIPLE_DIFFERENT for these too
911 style_res->text_anchor.computed = style->text_anchor.computed;
912 style_res->writing_mode.computed = style->writing_mode.computed;
913 }
915 if (texts == 0)
916 return QUERY_STYLE_NOTHING;
918 if (texts > 1) {
919 size /= texts;
920 letterspacing /= texts;
921 linespacing /= texts;
922 }
924 style_res->font_size.computed = size;
925 style_res->font_size.type = SP_FONT_SIZE_LENGTH;
927 style_res->letter_spacing.normal = letterspacing_normal;
928 style_res->letter_spacing.computed = letterspacing;
930 style_res->line_height.normal = linespacing_normal;
931 style_res->line_height.computed = linespacing;
932 style_res->line_height.value = linespacing;
933 style_res->line_height.unit = SP_CSS_UNIT_PERCENT;
935 if (texts > 1) {
936 if (different) {
937 return QUERY_STYLE_MULTIPLE_AVERAGED;
938 } else {
939 return QUERY_STYLE_MULTIPLE_SAME;
940 }
941 } else {
942 return QUERY_STYLE_SINGLE;
943 }
944 }
946 /**
947 * Write to style_res the average font style of objects.
948 */
949 int
950 objects_query_fontstyle (GSList *objects, SPStyle *style_res)
951 {
952 bool different = false;
953 bool set = false;
955 int texts = 0;
957 for (GSList const *i = objects; i != NULL; i = i->next) {
958 SPObject *obj = SP_OBJECT (i->data);
960 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
961 && !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
962 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
963 continue;
965 SPStyle *style = SP_OBJECT_STYLE (obj);
966 if (!style) continue;
968 texts ++;
970 if (set &&
971 font_style_to_pos(*style_res).signature() != font_style_to_pos(*style).signature() ) {
972 different = true; // different styles
973 }
975 set = TRUE;
976 style_res->font_weight.value = style_res->font_weight.computed = style->font_weight.computed;
977 style_res->font_style.value = style_res->font_style.computed = style->font_style.computed;
978 style_res->font_stretch.value = style_res->font_stretch.computed = style->font_stretch.computed;
979 style_res->font_variant.value = style_res->font_variant.computed = style->font_variant.computed;
980 style_res->text_align.value = style_res->text_align.computed = style->text_align.computed;
981 }
983 if (texts == 0 || !set)
984 return QUERY_STYLE_NOTHING;
986 if (texts > 1) {
987 if (different) {
988 return QUERY_STYLE_MULTIPLE_DIFFERENT;
989 } else {
990 return QUERY_STYLE_MULTIPLE_SAME;
991 }
992 } else {
993 return QUERY_STYLE_SINGLE;
994 }
995 }
997 /**
998 * Write to style_res the average font family of objects.
999 */
1000 int
1001 objects_query_fontfamily (GSList *objects, SPStyle *style_res)
1002 {
1003 bool different = false;
1004 int texts = 0;
1006 if (style_res->text->font_family.value) {
1007 g_free(style_res->text->font_family.value);
1008 style_res->text->font_family.value = NULL;
1009 }
1010 style_res->text->font_family.set = FALSE;
1012 for (GSList const *i = objects; i != NULL; i = i->next) {
1013 SPObject *obj = SP_OBJECT (i->data);
1015 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
1016 && !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
1017 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
1018 continue;
1020 SPStyle *style = SP_OBJECT_STYLE (obj);
1021 if (!style) continue;
1023 texts ++;
1025 if (style_res->text->font_family.value && style->text->font_family.value &&
1026 strcmp (style_res->text->font_family.value, style->text->font_family.value)) {
1027 different = true; // different fonts
1028 }
1030 if (style_res->text->font_family.value) {
1031 g_free(style_res->text->font_family.value);
1032 style_res->text->font_family.value = NULL;
1033 }
1035 style_res->text->font_family.set = TRUE;
1036 style_res->text->font_family.value = g_strdup(style->text->font_family.value);
1037 }
1039 if (texts == 0 || !style_res->text->font_family.set)
1040 return QUERY_STYLE_NOTHING;
1042 if (texts > 1) {
1043 if (different) {
1044 return QUERY_STYLE_MULTIPLE_DIFFERENT;
1045 } else {
1046 return QUERY_STYLE_MULTIPLE_SAME;
1047 }
1048 } else {
1049 return QUERY_STYLE_SINGLE;
1050 }
1051 }
1053 int
1054 objects_query_blend (GSList *objects, SPStyle *style_res)
1055 {
1056 const int empty_prev = -2;
1057 const int complex_filter = 5;
1058 int blend = 0;
1059 float blend_prev = empty_prev;
1060 bool same_blend = true;
1061 guint items = 0;
1063 for (GSList const *i = objects; i != NULL; i = i->next) {
1064 SPObject *obj = SP_OBJECT (i->data);
1065 SPStyle *style = SP_OBJECT_STYLE (obj);
1066 if(!style || !SP_IS_ITEM(obj)) continue;
1068 items++;
1070 //if object has a filter
1071 if (style->filter.set && style->getFilter()) {
1072 int blurcount = 0;
1073 int blendcount = 0;
1075 // determine whether filter is simple (blend and/or blur) or complex
1076 for(SPObject *primitive_obj = style->getFilter()->children;
1077 primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
1078 primitive_obj = primitive_obj->next) {
1079 SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
1080 if(SP_IS_FEBLEND(primitive))
1081 ++blendcount;
1082 else if(SP_IS_GAUSSIANBLUR(primitive))
1083 ++blurcount;
1084 else {
1085 blurcount = complex_filter;
1086 break;
1087 }
1088 }
1090 // simple filter
1091 if(blurcount == 1 || blendcount == 1) {
1092 for(SPObject *primitive_obj = style->getFilter()->children;
1093 primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
1094 primitive_obj = primitive_obj->next) {
1095 if(SP_IS_FEBLEND(primitive_obj)) {
1096 SPFeBlend *spblend = SP_FEBLEND(primitive_obj);
1097 blend = spblend->blend_mode;
1098 }
1099 }
1100 }
1101 else {
1102 blend = complex_filter;
1103 }
1104 }
1105 // defaults to blend mode = "normal"
1106 else {
1107 blend = 0;
1108 }
1110 if(blend_prev != empty_prev && blend_prev != blend)
1111 same_blend = false;
1112 blend_prev = blend;
1113 }
1115 if (items > 0) {
1116 style_res->filter_blend_mode.value = blend;
1117 }
1119 if (items == 0) {
1120 return QUERY_STYLE_NOTHING;
1121 } else if (items == 1) {
1122 return QUERY_STYLE_SINGLE;
1123 } else {
1124 if(same_blend)
1125 return QUERY_STYLE_MULTIPLE_SAME;
1126 else
1127 return QUERY_STYLE_MULTIPLE_DIFFERENT;
1128 }
1129 }
1131 /**
1132 * Write to style_res the average blurring of a list of objects.
1133 */
1134 int
1135 objects_query_blur (GSList *objects, SPStyle *style_res)
1136 {
1137 if (g_slist_length(objects) == 0) {
1138 /* No objects, set empty */
1139 return QUERY_STYLE_NOTHING;
1140 }
1142 float blur_sum = 0;
1143 float blur_prev = -1;
1144 bool same_blur = true;
1145 guint blur_items = 0;
1146 guint items = 0;
1148 for (GSList const *i = objects; i != NULL; i = i->next) {
1149 SPObject *obj = SP_OBJECT (i->data);
1150 SPStyle *style = SP_OBJECT_STYLE (obj);
1151 if (!style) continue;
1152 if (!SP_IS_ITEM(obj)) continue;
1154 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(obj));
1156 items ++;
1158 //if object has a filter
1159 if (style->filter.set && style->getFilter()) {
1160 //cycle through filter primitives
1161 SPObject *primitive_obj = style->getFilter()->children;
1162 while (primitive_obj) {
1163 if (SP_IS_FILTER_PRIMITIVE(primitive_obj)) {
1164 SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
1166 //if primitive is gaussianblur
1167 if(SP_IS_GAUSSIANBLUR(primitive)) {
1168 SPGaussianBlur * spblur = SP_GAUSSIANBLUR(primitive);
1169 float num = spblur->stdDeviation.getNumber();
1170 blur_sum += num * NR::expansion(i2d);
1171 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
1172 same_blur = false;
1173 blur_prev = num;
1174 //TODO: deal with opt number, for the moment it's not necessary to the ui.
1175 blur_items ++;
1176 }
1177 }
1178 primitive_obj = primitive_obj->next;
1179 }
1180 }
1181 }
1183 if (items > 0) {
1184 if (blur_items > 0)
1185 blur_sum /= blur_items;
1186 style_res->filter_gaussianBlur_deviation.value = blur_sum;
1187 }
1189 if (items == 0) {
1190 return QUERY_STYLE_NOTHING;
1191 } else if (items == 1) {
1192 return QUERY_STYLE_SINGLE;
1193 } else {
1194 if (same_blur)
1195 return QUERY_STYLE_MULTIPLE_SAME;
1196 else
1197 return QUERY_STYLE_MULTIPLE_AVERAGED;
1198 }
1199 }
1201 /**
1202 * Query the given list of objects for the given property, write
1203 * the result to style, return appropriate flag.
1204 */
1205 int
1206 sp_desktop_query_style_from_list (GSList *list, SPStyle *style, int property)
1207 {
1208 if (property == QUERY_STYLE_PROPERTY_FILL) {
1209 return objects_query_fillstroke (list, style, true);
1210 } else if (property == QUERY_STYLE_PROPERTY_STROKE) {
1211 return objects_query_fillstroke (list, style, false);
1213 } else if (property == QUERY_STYLE_PROPERTY_STROKEWIDTH) {
1214 return objects_query_strokewidth (list, style);
1215 } else if (property == QUERY_STYLE_PROPERTY_STROKEMITERLIMIT) {
1216 return objects_query_miterlimit (list, style);
1217 } else if (property == QUERY_STYLE_PROPERTY_STROKECAP) {
1218 return objects_query_strokecap (list, style);
1219 } else if (property == QUERY_STYLE_PROPERTY_STROKEJOIN) {
1220 return objects_query_strokejoin (list, style);
1222 } else if (property == QUERY_STYLE_PROPERTY_MASTEROPACITY) {
1223 return objects_query_opacity (list, style);
1225 } else if (property == QUERY_STYLE_PROPERTY_FONTFAMILY) {
1226 return objects_query_fontfamily (list, style);
1227 } else if (property == QUERY_STYLE_PROPERTY_FONTSTYLE) {
1228 return objects_query_fontstyle (list, style);
1229 } else if (property == QUERY_STYLE_PROPERTY_FONTNUMBERS) {
1230 return objects_query_fontnumbers (list, style);
1232 } else if (property == QUERY_STYLE_PROPERTY_BLEND) {
1233 return objects_query_blend (list, style);
1234 } else if (property == QUERY_STYLE_PROPERTY_BLUR) {
1235 return objects_query_blur (list, style);
1236 }
1237 return QUERY_STYLE_NOTHING;
1238 }
1241 /**
1242 * Query the subselection (if any) or selection on the given desktop for the given property, write
1243 * the result to style, return appropriate flag.
1244 */
1245 int
1246 sp_desktop_query_style(SPDesktop *desktop, SPStyle *style, int property)
1247 {
1248 int ret = desktop->_query_style_signal.emit(style, property);
1250 if (ret != QUERY_STYLE_NOTHING)
1251 return ret; // subselection returned a style, pass it on
1253 // otherwise, do querying and averaging over selection
1254 return sp_desktop_query_style_from_list ((GSList *) desktop->selection->itemList(), style, property);
1255 }
1257 /**
1258 * Do the same as sp_desktop_query_style for all (defined) style properties, return true if none of
1259 * the properties returned QUERY_STYLE_NOTHING.
1260 */
1261 bool
1262 sp_desktop_query_style_all (SPDesktop *desktop, SPStyle *query)
1263 {
1264 int result_family = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTFAMILY);
1265 int result_fstyle = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTSTYLE);
1266 int result_fnumbers = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTNUMBERS);
1267 int result_fill = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FILL);
1268 int result_stroke = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKE);
1269 int result_strokewidth = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEWIDTH);
1270 int result_strokemiterlimit = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEMITERLIMIT);
1271 int result_strokecap = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKECAP);
1272 int result_strokejoin = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEJOIN);
1273 int result_opacity = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_MASTEROPACITY);
1274 int result_blur = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_BLUR);
1276 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);
1277 }
1280 /*
1281 Local Variables:
1282 mode:c++
1283 c-file-style:"stroustrup"
1284 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1285 indent-tabs-mode:nil
1286 fill-column:99
1287 End:
1288 */
1289 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :