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"
44 /**
45 * Set color on selection on desktop.
46 */
47 void
48 sp_desktop_set_color(SPDesktop *desktop, ColorRGBA const &color, bool is_relative, bool fill)
49 {
50 /// \todo relative color setting
51 if (is_relative) {
52 g_warning("FIXME: relative color setting not yet implemented");
53 return;
54 }
56 guint32 rgba = SP_RGBA32_F_COMPOSE(color[0], color[1], color[2], color[3]);
57 gchar b[64];
58 sp_svg_write_color(b, 64, rgba);
59 SPCSSAttr *css = sp_repr_css_attr_new();
60 if (fill) {
61 sp_repr_css_set_property(css, "fill", b);
62 Inkscape::CSSOStringStream osalpha;
63 osalpha << color[3];
64 sp_repr_css_set_property(css, "fill-opacity", osalpha.str().c_str());
65 } else {
66 sp_repr_css_set_property(css, "stroke", b);
67 Inkscape::CSSOStringStream osalpha;
68 osalpha << color[3];
69 sp_repr_css_set_property(css, "stroke-opacity", osalpha.str().c_str());
70 }
72 sp_desktop_set_style(desktop, css);
74 sp_repr_css_attr_unref(css);
75 }
77 /**
78 * Apply style on object and children, recursively.
79 */
80 void
81 sp_desktop_apply_css_recursive(SPObject *o, SPCSSAttr *css, bool skip_lines)
82 {
83 // non-items should not have style
84 if (!SP_IS_ITEM(o))
85 return;
87 // 1. tspans with role=line are not regular objects in that they are not supposed to have style of their own,
88 // but must always inherit from the parent text. Same for textPath.
89 // However, if the line tspan or textPath contains some style (old file?), we reluctantly set our style to it too.
91 // 2. Generally we allow setting style on clones, but when it's inside flowRegion, do not touch
92 // it, be it clone or not; it's just styleless shape (because that's how Inkscape does
93 // flowtext).
95 if (!(skip_lines
96 && ((SP_IS_TSPAN(o) && SP_TSPAN(o)->role == SP_TSPAN_ROLE_LINE)
97 || SP_IS_FLOWDIV(o)
98 || SP_IS_FLOWPARA(o)
99 || SP_IS_TEXTPATH(o))
100 && !SP_OBJECT_REPR(o)->attribute("style"))
101 &&
102 !(SP_IS_FLOWREGION(o) ||
103 SP_IS_FLOWREGIONEXCLUDE(o) ||
104 (SP_IS_USE(o) &&
105 SP_OBJECT_PARENT(o) &&
106 (SP_IS_FLOWREGION(SP_OBJECT_PARENT(o)) ||
107 SP_IS_FLOWREGIONEXCLUDE(SP_OBJECT_PARENT(o))
108 )
109 )
110 )
111 ) {
113 SPCSSAttr *css_set = sp_repr_css_attr_new();
114 sp_repr_css_merge(css_set, css);
116 // Scale the style by the inverse of the accumulated parent transform in the paste context.
117 {
118 NR::Matrix const local(sp_item_i2doc_affine(SP_ITEM(o)));
119 double const ex(NR::expansion(local));
120 if ( ( ex != 0. )
121 && ( ex != 1. ) ) {
122 sp_css_attr_scale(css_set, 1/ex);
123 }
124 }
126 sp_repr_css_change(SP_OBJECT_REPR(o), css_set, "style");
128 sp_repr_css_attr_unref(css_set);
129 }
131 // setting style on child of clone spills into the clone original (via shared repr), don't do it!
132 if (SP_IS_USE(o))
133 return;
135 for (SPObject *child = sp_object_first_child(SP_OBJECT(o)) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
136 if (sp_repr_css_property(css, "opacity", NULL) != NULL) {
137 // Unset properties which are accumulating and thus should not be set recursively.
138 // 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.
139 SPCSSAttr *css_recurse = sp_repr_css_attr_new();
140 sp_repr_css_merge(css_recurse, css);
141 sp_repr_css_set_property(css_recurse, "opacity", NULL);
142 sp_desktop_apply_css_recursive(child, css_recurse, skip_lines);
143 sp_repr_css_attr_unref(css_recurse);
144 } else {
145 sp_desktop_apply_css_recursive(child, css, skip_lines);
146 }
147 }
148 }
150 /**
151 * Apply style on selection on desktop.
152 */
153 void
154 sp_desktop_set_style(SPDesktop *desktop, SPCSSAttr *css, bool change, bool write_current)
155 {
156 if (write_current) {
157 // 1. Set internal value
158 sp_repr_css_merge(desktop->current, css);
160 // 1a. Write to prefs; make a copy and unset any URIs first
161 SPCSSAttr *css_write = sp_repr_css_attr_new();
162 sp_repr_css_merge(css_write, css);
163 sp_css_attr_unset_uris(css_write);
164 sp_repr_css_change(inkscape_get_repr(INKSCAPE, "desktop"), css_write, "style");
165 for (const GSList *i = desktop->selection->itemList(); i != NULL; i = i->next) {
166 /* last used styles for 3D box faces are stored separately */
167 if (SP_IS_PATH (i->data)) {
168 const char * descr = SP_OBJECT_REPR (G_OBJECT (i->data))->attribute ("inkscape:box3dface");
169 if (descr != NULL) {
170 gchar *style_grp = g_strconcat ("desktop.", descr, NULL);
171 sp_repr_css_change(inkscape_get_repr(INKSCAPE, style_grp), css_write, "style");
172 g_free (style_grp);
173 }
174 }
175 }
176 sp_repr_css_attr_unref(css_write);
177 }
179 if (!change)
180 return;
182 // 2. Emit signal
183 bool intercepted = desktop->_set_style_signal.emit(css);
185 /** \todo
186 * FIXME: in set_style, compensate pattern and gradient fills, stroke width,
187 * rect corners, font size for the object's own transform so that pasting
188 * fills does not depend on preserve/optimize.
189 */
191 // 3. If nobody has intercepted the signal, apply the style to the selection
192 if (!intercepted) {
193 for (GSList const *i = desktop->selection->itemList(); i != NULL; i = i->next) {
194 /// \todo if the style is text-only, apply only to texts?
195 sp_desktop_apply_css_recursive(SP_OBJECT(i->data), css, true);
196 }
197 }
198 }
200 /**
201 * Return the desktop's current style.
202 */
203 SPCSSAttr *
204 sp_desktop_get_style(SPDesktop *desktop, bool with_text)
205 {
206 SPCSSAttr *css = sp_repr_css_attr_new();
207 sp_repr_css_merge(css, desktop->current);
208 if (!css->attributeList()) {
209 sp_repr_css_attr_unref(css);
210 return NULL;
211 } else {
212 if (!with_text) {
213 css = sp_css_attr_unset_text(css);
214 }
215 return css;
216 }
217 }
219 /**
220 * Return the desktop's current color.
221 */
222 guint32
223 sp_desktop_get_color(SPDesktop *desktop, bool is_fill)
224 {
225 guint32 r = 0; // if there's no color, return black
226 gchar const *property = sp_repr_css_property(desktop->current,
227 is_fill ? "fill" : "stroke",
228 "#000");
230 if (desktop->current && property) { // if there is style and the property in it,
231 if (strncmp(property, "url", 3)) { // and if it's not url,
232 // read it
233 r = sp_svg_read_color(property, r);
234 }
235 }
237 return r;
238 }
240 double
241 sp_desktop_get_master_opacity_tool(SPDesktop *desktop, char const *tool)
242 {
243 SPCSSAttr *css = NULL;
244 gfloat value = 1.0; // default if nothing else found
245 if (prefs_get_double_attribute(tool, "usecurrent", 0) != 0) {
246 css = sp_desktop_get_style(desktop, true);
247 } else {
248 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
249 if (tool_repr) {
250 css = sp_repr_css_attr_inherited(tool_repr, "style");
251 }
252 }
254 if (css) {
255 gchar const *property = css ? sp_repr_css_property(css, "opacity", "1.000") : 0;
257 if (desktop->current && property) { // if there is style and the property in it,
258 if ( !sp_svg_number_read_f(property, &value) ) {
259 value = 1.0; // things failed. set back to the default
260 }
261 }
263 sp_repr_css_attr_unref(css);
264 }
266 return value;
267 }
268 double
269 sp_desktop_get_opacity_tool(SPDesktop *desktop, char const *tool, bool is_fill)
270 {
271 SPCSSAttr *css = NULL;
272 gfloat value = 1.0; // default if nothing else found
273 if (prefs_get_double_attribute(tool, "usecurrent", 0) != 0) {
274 css = sp_desktop_get_style(desktop, true);
275 } else {
276 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
277 if (tool_repr) {
278 css = sp_repr_css_attr_inherited(tool_repr, "style");
279 }
280 }
282 if (css) {
283 gchar const *property = css ? sp_repr_css_property(css, is_fill ? "fill-opacity": "stroke-opacity", "1.000") : 0;
285 if (desktop->current && property) { // if there is style and the property in it,
286 if ( !sp_svg_number_read_f(property, &value) ) {
287 value = 1.0; // things failed. set back to the default
288 }
289 }
291 sp_repr_css_attr_unref(css);
292 }
294 return value;
295 }
296 guint32
297 sp_desktop_get_color_tool(SPDesktop *desktop, char const *tool, bool is_fill)
298 {
299 SPCSSAttr *css = NULL;
300 guint32 r = 0; // if there's no color, return black
301 if (prefs_get_int_attribute(tool, "usecurrent", 0) != 0) {
302 css = sp_desktop_get_style(desktop, true);
303 } else {
304 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
305 if (tool_repr) {
306 css = sp_repr_css_attr_inherited(tool_repr, "style");
307 }
308 }
310 if (css) {
311 gchar const *property = sp_repr_css_property(css, is_fill ? "fill" : "stroke", "#000");
313 if (desktop->current && property) { // if there is style and the property in it,
314 if (strncmp(property, "url", 3)) { // and if it's not url,
315 // read it
316 r = sp_svg_read_color(property, r);
317 }
318 }
320 sp_repr_css_attr_unref(css);
321 }
323 return r | 0xff;
324 }
325 /**
326 * Apply the desktop's current style or the tool style to repr.
327 */
328 void
329 sp_desktop_apply_style_tool(SPDesktop *desktop, Inkscape::XML::Node *repr, char const *tool, bool with_text)
330 {
331 SPCSSAttr *css_current = sp_desktop_get_style(desktop, with_text);
332 if ((prefs_get_int_attribute(tool, "usecurrent", 0) != 0) && css_current) {
333 sp_repr_css_set(repr, css_current, "style");
334 } else {
335 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, tool);
336 if (tool_repr) {
337 SPCSSAttr *css = sp_repr_css_attr_inherited(tool_repr, "style");
338 sp_repr_css_set(repr, css, "style");
339 sp_repr_css_attr_unref(css);
340 }
341 }
342 if (css_current) {
343 sp_repr_css_attr_unref(css_current);
344 }
345 }
347 /**
348 * Returns the font size (in SVG pixels) of the text tool style (if text
349 * tool uses its own style) or desktop style (otherwise).
350 */
351 double
352 sp_desktop_get_font_size_tool(SPDesktop *desktop)
353 {
354 gchar const *desktop_style = inkscape_get_repr(INKSCAPE, "desktop")->attribute("style");
355 gchar const *style_str = NULL;
356 if ((prefs_get_int_attribute("tools.text", "usecurrent", 0) != 0) && desktop_style) {
357 style_str = desktop_style;
358 } else {
359 Inkscape::XML::Node *tool_repr = inkscape_get_repr(INKSCAPE, "tools.text");
360 if (tool_repr) {
361 style_str = tool_repr->attribute("style");
362 }
363 }
365 double ret = 12;
366 if (style_str) {
367 SPStyle *style = sp_style_new(SP_ACTIVE_DOCUMENT);
368 sp_style_merge_from_style_string(style, style_str);
369 ret = style->font_size.computed;
370 sp_style_unref(style);
371 }
372 return ret;
373 }
375 /** Determine average stroke width, simple method */
376 // see TODO in dialogs/stroke-style.cpp on how to get rid of this eventually
377 gdouble
378 stroke_average_width (GSList const *objects)
379 {
380 if (g_slist_length ((GSList *) objects) == 0)
381 return NR_HUGE;
383 gdouble avgwidth = 0.0;
384 bool notstroked = true;
385 int n_notstroked = 0;
387 for (GSList const *l = objects; l != NULL; l = l->next) {
388 if (!SP_IS_ITEM (l->data))
389 continue;
391 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(l->data));
393 SPObject *object = SP_OBJECT(l->data);
395 if ( object->style->stroke.type == SP_PAINT_TYPE_NONE ) {
396 ++n_notstroked; // do not count nonstroked objects
397 continue;
398 } else {
399 notstroked = false;
400 }
402 avgwidth += SP_OBJECT_STYLE (object)->stroke_width.computed * i2d.expansion();
403 }
405 if (notstroked)
406 return NR_HUGE;
408 return avgwidth / (g_slist_length ((GSList *) objects) - n_notstroked);
409 }
411 /**
412 * Write to style_res the average fill or stroke of list of objects, if applicable.
413 */
414 int
415 objects_query_fillstroke (GSList *objects, SPStyle *style_res, bool const isfill)
416 {
417 if (g_slist_length(objects) == 0) {
418 /* No objects, set empty */
419 return QUERY_STYLE_NOTHING;
420 }
422 SPIPaint *paint_res = isfill? &style_res->fill : &style_res->stroke;
423 paint_res->type = SP_PAINT_TYPE_IMPOSSIBLE;
424 paint_res->set = TRUE;
426 gfloat c[4];
427 c[0] = c[1] = c[2] = c[3] = 0.0;
428 gint num = 0;
430 gfloat prev[3];
431 prev[0] = prev[1] = prev[2] = 0.0;
432 bool same_color = true;
434 for (GSList const *i = objects; i != NULL; i = i->next) {
435 SPObject *obj = SP_OBJECT (i->data);
436 SPStyle *style = SP_OBJECT_STYLE (obj);
437 if (!style) continue;
439 SPIPaint *paint = isfill? &style->fill : &style->stroke;
441 // We consider paint "effectively set" for anything within text hierarchy
442 SPObject *parent = SP_OBJECT_PARENT (obj);
443 bool paint_effectively_set =
444 paint->set || (SP_IS_TEXT(parent) || SP_IS_TEXTPATH(parent) || SP_IS_TSPAN(parent)
445 || SP_IS_FLOWTEXT(parent) || SP_IS_FLOWDIV(parent) || SP_IS_FLOWPARA(parent)
446 || SP_IS_FLOWTSPAN(parent) || SP_IS_FLOWLINE(parent));
448 // 1. Bail out with QUERY_STYLE_MULTIPLE_DIFFERENT if necessary
450 if ((paint_res->type != SP_PAINT_TYPE_IMPOSSIBLE) && (paint->type != paint_res->type || (paint_res->set != paint_effectively_set))) {
451 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different types of paint
452 }
454 if (paint_res->set && paint->set && paint_res->type == SP_PAINT_TYPE_PAINTSERVER) {
455 // both previous paint and this paint were a server, see if the servers are compatible
457 SPPaintServer *server_res = isfill? SP_STYLE_FILL_SERVER (style_res) : SP_STYLE_STROKE_SERVER (style_res);
458 SPPaintServer *server = isfill? SP_STYLE_FILL_SERVER (style) : SP_STYLE_STROKE_SERVER (style);
460 if (SP_IS_LINEARGRADIENT (server_res)) {
462 if (!SP_IS_LINEARGRADIENT(server))
463 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
465 SPGradient *vector = sp_gradient_get_vector ( SP_GRADIENT (server), FALSE );
466 SPGradient *vector_res = sp_gradient_get_vector ( SP_GRADIENT (server_res), FALSE );
467 if (vector_res != vector)
468 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
470 } else if (SP_IS_RADIALGRADIENT (server_res)) {
472 if (!SP_IS_RADIALGRADIENT(server))
473 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
475 SPGradient *vector = sp_gradient_get_vector ( SP_GRADIENT (server), FALSE );
476 SPGradient *vector_res = sp_gradient_get_vector ( SP_GRADIENT (server_res), FALSE );
477 if (vector_res != vector)
478 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different gradient vectors
480 } else if (SP_IS_PATTERN (server_res)) {
482 if (!SP_IS_PATTERN(server))
483 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different kind of server
485 SPPattern *pat = pattern_getroot (SP_PATTERN (server));
486 SPPattern *pat_res = pattern_getroot (SP_PATTERN (server_res));
487 if (pat_res != pat)
488 return QUERY_STYLE_MULTIPLE_DIFFERENT; // different pattern roots
489 }
490 }
492 // 2. Sum color, copy server from paint to paint_res
494 if (paint_res->set && paint_effectively_set && paint->type == SP_PAINT_TYPE_COLOR) {
496 gfloat d[3];
497 sp_color_get_rgb_floatv (&paint->value.color, d);
499 // Check if this color is the same as previous
500 if (paint_res->type == SP_PAINT_TYPE_IMPOSSIBLE) {
501 prev[0] = d[0];
502 prev[1] = d[1];
503 prev[2] = d[2];
504 } else {
505 if (same_color && (prev[0] != d[0] || prev[1] != d[1] || prev[2] != d[2]))
506 same_color = false;
507 }
509 // average color
510 c[0] += d[0];
511 c[1] += d[1];
512 c[2] += d[2];
513 c[3] += SP_SCALE24_TO_FLOAT (isfill? style->fill_opacity.value : style->stroke_opacity.value);
514 num ++;
515 }
517 paint_res->type = paint->type;
518 if (paint_res->set && paint_effectively_set && paint->type == SP_PAINT_TYPE_PAINTSERVER) { // copy the server
519 if (isfill) {
520 sp_style_set_to_uri_string (style_res, true, style->getFillURI());
521 } else {
522 sp_style_set_to_uri_string (style_res, false, style->getStrokeURI());
523 }
524 }
525 paint_res->set = paint_effectively_set;
526 style_res->fill_rule.computed = style->fill_rule.computed; // no averaging on this, just use the last one
527 }
529 // After all objects processed, divide the color if necessary and return
530 if (paint_res->set && paint_res->type == SP_PAINT_TYPE_COLOR) { // set the color
531 g_assert (num >= 1);
533 c[0] /= num;
534 c[1] /= num;
535 c[2] /= num;
536 c[3] /= num;
537 sp_color_set_rgb_float(&paint_res->value.color, c[0], c[1], c[2]);
538 if (isfill) {
539 style_res->fill_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]);
540 } else {
541 style_res->stroke_opacity.value = SP_SCALE24_FROM_FLOAT (c[3]);
542 }
543 if (num > 1) {
544 if (same_color)
545 return QUERY_STYLE_MULTIPLE_SAME;
546 else
547 return QUERY_STYLE_MULTIPLE_AVERAGED;
548 } else {
549 return QUERY_STYLE_SINGLE;
550 }
551 }
553 // Not color
554 if (g_slist_length(objects) > 1) {
555 return QUERY_STYLE_MULTIPLE_SAME;
556 } else {
557 return QUERY_STYLE_SINGLE;
558 }
559 }
561 /**
562 * Write to style_res the average opacity of a list of objects.
563 */
564 int
565 objects_query_opacity (GSList *objects, SPStyle *style_res)
566 {
567 if (g_slist_length(objects) == 0) {
568 /* No objects, set empty */
569 return QUERY_STYLE_NOTHING;
570 }
572 gdouble opacity_sum = 0;
573 gdouble opacity_prev = -1;
574 bool same_opacity = true;
575 guint opacity_items = 0;
578 for (GSList const *i = objects; i != NULL; i = i->next) {
579 SPObject *obj = SP_OBJECT (i->data);
580 SPStyle *style = SP_OBJECT_STYLE (obj);
581 if (!style) continue;
583 double opacity = SP_SCALE24_TO_FLOAT(style->opacity.value);
584 opacity_sum += opacity;
585 if (opacity_prev != -1 && opacity != opacity_prev)
586 same_opacity = false;
587 opacity_prev = opacity;
588 opacity_items ++;
589 }
590 if (opacity_items > 1)
591 opacity_sum /= opacity_items;
593 style_res->opacity.value = SP_SCALE24_FROM_FLOAT(opacity_sum);
595 if (opacity_items == 0) {
596 return QUERY_STYLE_NOTHING;
597 } else if (opacity_items == 1) {
598 return QUERY_STYLE_SINGLE;
599 } else {
600 if (same_opacity)
601 return QUERY_STYLE_MULTIPLE_SAME;
602 else
603 return QUERY_STYLE_MULTIPLE_AVERAGED;
604 }
605 }
607 /**
608 * Write to style_res the average stroke width of a list of objects.
609 */
610 int
611 objects_query_strokewidth (GSList *objects, SPStyle *style_res)
612 {
613 if (g_slist_length(objects) == 0) {
614 /* No objects, set empty */
615 return QUERY_STYLE_NOTHING;
616 }
618 gdouble avgwidth = 0.0;
620 gdouble prev_sw = -1;
621 bool same_sw = true;
623 int n_stroked = 0;
625 for (GSList const *i = objects; i != NULL; i = i->next) {
626 SPObject *obj = SP_OBJECT (i->data);
627 if (!SP_IS_ITEM(obj)) continue;
628 SPStyle *style = SP_OBJECT_STYLE (obj);
629 if (!style) continue;
631 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
632 continue;
633 }
635 n_stroked ++;
637 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(obj));
638 double sw = style->stroke_width.computed * i2d.expansion();
640 if (prev_sw != -1 && fabs(sw - prev_sw) > 1e-3)
641 same_sw = false;
642 prev_sw = sw;
644 avgwidth += sw;
645 }
647 if (n_stroked > 1)
648 avgwidth /= (n_stroked);
650 style_res->stroke_width.computed = avgwidth;
651 style_res->stroke_width.set = true;
653 if (n_stroked == 0) {
654 return QUERY_STYLE_NOTHING;
655 } else if (n_stroked == 1) {
656 return QUERY_STYLE_SINGLE;
657 } else {
658 if (same_sw)
659 return QUERY_STYLE_MULTIPLE_SAME;
660 else
661 return QUERY_STYLE_MULTIPLE_AVERAGED;
662 }
663 }
665 /**
666 * Write to style_res the average miter limit of a list of objects.
667 */
668 int
669 objects_query_miterlimit (GSList *objects, SPStyle *style_res)
670 {
671 if (g_slist_length(objects) == 0) {
672 /* No objects, set empty */
673 return QUERY_STYLE_NOTHING;
674 }
676 gdouble avgml = 0.0;
677 int n_stroked = 0;
679 gdouble prev_ml = -1;
680 bool same_ml = true;
682 for (GSList const *i = objects; i != NULL; i = i->next) {
683 SPObject *obj = SP_OBJECT (i->data);
684 if (!SP_IS_ITEM(obj)) continue;
685 SPStyle *style = SP_OBJECT_STYLE (obj);
686 if (!style) continue;
688 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
689 continue;
690 }
692 n_stroked ++;
694 if (prev_ml != -1 && fabs(style->stroke_miterlimit.value - prev_ml) > 1e-3)
695 same_ml = false;
696 prev_ml = style->stroke_miterlimit.value;
698 avgml += style->stroke_miterlimit.value;
699 }
701 if (n_stroked > 1)
702 avgml /= (n_stroked);
704 style_res->stroke_miterlimit.value = avgml;
705 style_res->stroke_miterlimit.set = true;
707 if (n_stroked == 0) {
708 return QUERY_STYLE_NOTHING;
709 } else if (n_stroked == 1) {
710 return QUERY_STYLE_SINGLE;
711 } else {
712 if (same_ml)
713 return QUERY_STYLE_MULTIPLE_SAME;
714 else
715 return QUERY_STYLE_MULTIPLE_AVERAGED;
716 }
717 }
719 /**
720 * Write to style_res the stroke cap of a list of objects.
721 */
722 int
723 objects_query_strokecap (GSList *objects, SPStyle *style_res)
724 {
725 if (g_slist_length(objects) == 0) {
726 /* No objects, set empty */
727 return QUERY_STYLE_NOTHING;
728 }
730 int cap = -1;
731 gdouble prev_cap = -1;
732 bool same_cap = true;
733 int n_stroked = 0;
735 for (GSList const *i = objects; i != NULL; i = i->next) {
736 SPObject *obj = SP_OBJECT (i->data);
737 if (!SP_IS_ITEM(obj)) continue;
738 SPStyle *style = SP_OBJECT_STYLE (obj);
739 if (!style) continue;
741 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
742 continue;
743 }
745 n_stroked ++;
747 if (prev_cap != -1 && style->stroke_linecap.value != prev_cap)
748 same_cap = false;
749 prev_cap = style->stroke_linecap.value;
751 cap = style->stroke_linecap.value;
752 }
754 style_res->stroke_linecap.value = cap;
755 style_res->stroke_linecap.set = true;
757 if (n_stroked == 0) {
758 return QUERY_STYLE_NOTHING;
759 } else if (n_stroked == 1) {
760 return QUERY_STYLE_SINGLE;
761 } else {
762 if (same_cap)
763 return QUERY_STYLE_MULTIPLE_SAME;
764 else
765 return QUERY_STYLE_MULTIPLE_DIFFERENT;
766 }
767 }
769 /**
770 * Write to style_res the stroke join of a list of objects.
771 */
772 int
773 objects_query_strokejoin (GSList *objects, SPStyle *style_res)
774 {
775 if (g_slist_length(objects) == 0) {
776 /* No objects, set empty */
777 return QUERY_STYLE_NOTHING;
778 }
780 int join = -1;
781 gdouble prev_join = -1;
782 bool same_join = true;
783 int n_stroked = 0;
785 for (GSList const *i = objects; i != NULL; i = i->next) {
786 SPObject *obj = SP_OBJECT (i->data);
787 if (!SP_IS_ITEM(obj)) continue;
788 SPStyle *style = SP_OBJECT_STYLE (obj);
789 if (!style) continue;
791 if ( style->stroke.type == SP_PAINT_TYPE_NONE ) {
792 continue;
793 }
795 n_stroked ++;
797 if (prev_join != -1 && style->stroke_linejoin.value != prev_join)
798 same_join = false;
799 prev_join = style->stroke_linejoin.value;
801 join = style->stroke_linejoin.value;
802 }
804 style_res->stroke_linejoin.value = join;
805 style_res->stroke_linejoin.set = true;
807 if (n_stroked == 0) {
808 return QUERY_STYLE_NOTHING;
809 } else if (n_stroked == 1) {
810 return QUERY_STYLE_SINGLE;
811 } else {
812 if (same_join)
813 return QUERY_STYLE_MULTIPLE_SAME;
814 else
815 return QUERY_STYLE_MULTIPLE_DIFFERENT;
816 }
817 }
819 /**
820 * Write to style_res the average font size and spacing of objects.
821 */
822 int
823 objects_query_fontnumbers (GSList *objects, SPStyle *style_res)
824 {
825 bool different = false;
827 double size = 0;
828 double letterspacing = 0;
829 double linespacing = 0;
830 bool linespacing_normal = false;
831 bool letterspacing_normal = false;
833 double size_prev = 0;
834 double letterspacing_prev = 0;
835 double linespacing_prev = 0;
837 /// \todo FIXME: add word spacing, kerns? rotates?
839 int texts = 0;
841 for (GSList const *i = objects; i != NULL; i = i->next) {
842 SPObject *obj = SP_OBJECT (i->data);
844 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
845 && !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
846 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
847 continue;
849 SPStyle *style = SP_OBJECT_STYLE (obj);
850 if (!style) continue;
852 texts ++;
853 size += style->font_size.computed * NR::expansion(sp_item_i2d_affine(SP_ITEM(obj))); /// \todo FIXME: we assume non-% units here
855 if (style->letter_spacing.normal) {
856 if (!different && (letterspacing_prev == 0 || letterspacing_prev == letterspacing))
857 letterspacing_normal = true;
858 } else {
859 letterspacing += style->letter_spacing.computed; /// \todo FIXME: we assume non-% units here
860 letterspacing_normal = false;
861 }
863 double linespacing_current;
864 if (style->line_height.normal) {
865 linespacing_current = Inkscape::Text::Layout::LINE_HEIGHT_NORMAL;
866 if (!different && (linespacing_prev == 0 || linespacing_prev == linespacing_current))
867 linespacing_normal = true;
868 } else if (style->line_height.unit == SP_CSS_UNIT_PERCENT || style->font_size.computed == 0) {
869 linespacing_current = style->line_height.value;
870 linespacing_normal = false;
871 } else { // we need % here
872 linespacing_current = style->line_height.computed / style->font_size.computed;
873 linespacing_normal = false;
874 }
875 linespacing += linespacing_current;
877 if ((size_prev != 0 && style->font_size.computed != size_prev) ||
878 (letterspacing_prev != 0 && style->letter_spacing.computed != letterspacing_prev) ||
879 (linespacing_prev != 0 && linespacing_current != linespacing_prev)) {
880 different = true;
881 }
883 size_prev = style->font_size.computed;
884 letterspacing_prev = style->letter_spacing.computed;
885 linespacing_prev = linespacing_current;
887 // FIXME: we must detect MULTIPLE_DIFFERENT for these too
888 style_res->text_anchor.computed = style->text_anchor.computed;
889 style_res->writing_mode.computed = style->writing_mode.computed;
890 }
892 if (texts == 0)
893 return QUERY_STYLE_NOTHING;
895 if (texts > 1) {
896 size /= texts;
897 letterspacing /= texts;
898 linespacing /= texts;
899 }
901 style_res->font_size.computed = size;
902 style_res->font_size.type = SP_FONT_SIZE_LENGTH;
904 style_res->letter_spacing.normal = letterspacing_normal;
905 style_res->letter_spacing.computed = letterspacing;
907 style_res->line_height.normal = linespacing_normal;
908 style_res->line_height.computed = linespacing;
909 style_res->line_height.value = linespacing;
910 style_res->line_height.unit = SP_CSS_UNIT_PERCENT;
912 if (texts > 1) {
913 if (different) {
914 return QUERY_STYLE_MULTIPLE_AVERAGED;
915 } else {
916 return QUERY_STYLE_MULTIPLE_SAME;
917 }
918 } else {
919 return QUERY_STYLE_SINGLE;
920 }
921 }
923 /**
924 * Write to style_res the average font style of objects.
925 */
926 int
927 objects_query_fontstyle (GSList *objects, SPStyle *style_res)
928 {
929 bool different = false;
930 bool set = false;
932 int texts = 0;
934 for (GSList const *i = objects; i != NULL; i = i->next) {
935 SPObject *obj = SP_OBJECT (i->data);
937 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
938 && !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
939 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
940 continue;
942 SPStyle *style = SP_OBJECT_STYLE (obj);
943 if (!style) continue;
945 texts ++;
947 if (set &&
948 font_style_to_pos(*style_res).signature() != font_style_to_pos(*style).signature() ) {
949 different = true; // different styles
950 }
952 set = TRUE;
953 style_res->font_weight.value = style_res->font_weight.computed = style->font_weight.computed;
954 style_res->font_style.value = style_res->font_style.computed = style->font_style.computed;
955 style_res->font_stretch.value = style_res->font_stretch.computed = style->font_stretch.computed;
956 style_res->font_variant.value = style_res->font_variant.computed = style->font_variant.computed;
957 style_res->text_align.value = style_res->text_align.computed = style->text_align.computed;
958 }
960 if (texts == 0 || !set)
961 return QUERY_STYLE_NOTHING;
963 if (texts > 1) {
964 if (different) {
965 return QUERY_STYLE_MULTIPLE_DIFFERENT;
966 } else {
967 return QUERY_STYLE_MULTIPLE_SAME;
968 }
969 } else {
970 return QUERY_STYLE_SINGLE;
971 }
972 }
974 /**
975 * Write to style_res the average font family of objects.
976 */
977 int
978 objects_query_fontfamily (GSList *objects, SPStyle *style_res)
979 {
980 bool different = false;
981 int texts = 0;
983 if (style_res->text->font_family.value) {
984 g_free(style_res->text->font_family.value);
985 style_res->text->font_family.value = NULL;
986 }
987 style_res->text->font_family.set = FALSE;
989 for (GSList const *i = objects; i != NULL; i = i->next) {
990 SPObject *obj = SP_OBJECT (i->data);
992 if (!SP_IS_TEXT(obj) && !SP_IS_FLOWTEXT(obj)
993 && !SP_IS_TSPAN(obj) && !SP_IS_TREF(obj) && !SP_IS_TEXTPATH(obj)
994 && !SP_IS_FLOWDIV(obj) && !SP_IS_FLOWPARA(obj) && !SP_IS_FLOWTSPAN(obj))
995 continue;
997 SPStyle *style = SP_OBJECT_STYLE (obj);
998 if (!style) continue;
1000 texts ++;
1002 if (style_res->text->font_family.value && style->text->font_family.value &&
1003 strcmp (style_res->text->font_family.value, style->text->font_family.value)) {
1004 different = true; // different fonts
1005 }
1007 if (style_res->text->font_family.value) {
1008 g_free(style_res->text->font_family.value);
1009 style_res->text->font_family.value = NULL;
1010 }
1012 style_res->text->font_family.set = TRUE;
1013 style_res->text->font_family.value = g_strdup(style->text->font_family.value);
1014 }
1016 if (texts == 0 || !style_res->text->font_family.set)
1017 return QUERY_STYLE_NOTHING;
1019 if (texts > 1) {
1020 if (different) {
1021 return QUERY_STYLE_MULTIPLE_DIFFERENT;
1022 } else {
1023 return QUERY_STYLE_MULTIPLE_SAME;
1024 }
1025 } else {
1026 return QUERY_STYLE_SINGLE;
1027 }
1028 }
1030 int
1031 objects_query_blend (GSList *objects, SPStyle *style_res)
1032 {
1033 const int empty_prev = -2;
1034 const int complex_filter = 5;
1035 int blend = 0;
1036 float blend_prev = empty_prev;
1037 bool same_blend = true;
1038 guint items = 0;
1040 for (GSList const *i = objects; i != NULL; i = i->next) {
1041 SPObject *obj = SP_OBJECT (i->data);
1042 SPStyle *style = SP_OBJECT_STYLE (obj);
1043 if(!style || !SP_IS_ITEM(obj)) continue;
1045 items++;
1047 //if object has a filter
1048 if (style->filter.set && style->getFilter()) {
1049 int blurcount = 0;
1050 int blendcount = 0;
1052 // determine whether filter is simple (blend and/or blur) or complex
1053 for(SPObject *primitive_obj = style->getFilter()->children;
1054 primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
1055 primitive_obj = primitive_obj->next) {
1056 SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
1057 if(SP_IS_FEBLEND(primitive))
1058 ++blendcount;
1059 else if(SP_IS_GAUSSIANBLUR(primitive))
1060 ++blurcount;
1061 else {
1062 blurcount = complex_filter;
1063 break;
1064 }
1065 }
1067 // simple filter
1068 if(blurcount == 1 || blendcount == 1) {
1069 for(SPObject *primitive_obj = style->getFilter()->children;
1070 primitive_obj && SP_IS_FILTER_PRIMITIVE(primitive_obj);
1071 primitive_obj = primitive_obj->next) {
1072 if(SP_IS_FEBLEND(primitive_obj)) {
1073 SPFeBlend *spblend = SP_FEBLEND(primitive_obj);
1074 blend = spblend->blend_mode;
1075 }
1076 }
1077 }
1078 else {
1079 blend = complex_filter;
1080 }
1081 }
1082 // defaults to blend mode = "normal"
1083 else {
1084 blend = 0;
1085 }
1087 if(blend_prev != empty_prev && blend_prev != blend)
1088 same_blend = false;
1089 blend_prev = blend;
1090 }
1092 if (items > 0) {
1093 style_res->filter_blend_mode.value = blend;
1094 }
1096 if (items == 0) {
1097 return QUERY_STYLE_NOTHING;
1098 } else if (items == 1) {
1099 return QUERY_STYLE_SINGLE;
1100 } else {
1101 if(same_blend)
1102 return QUERY_STYLE_MULTIPLE_SAME;
1103 else
1104 return QUERY_STYLE_MULTIPLE_DIFFERENT;
1105 }
1106 }
1108 /**
1109 * Write to style_res the average blurring of a list of objects.
1110 */
1111 int
1112 objects_query_blur (GSList *objects, SPStyle *style_res)
1113 {
1114 if (g_slist_length(objects) == 0) {
1115 /* No objects, set empty */
1116 return QUERY_STYLE_NOTHING;
1117 }
1119 float blur_sum = 0;
1120 float blur_prev = -1;
1121 bool same_blur = true;
1122 guint blur_items = 0;
1123 guint items = 0;
1125 for (GSList const *i = objects; i != NULL; i = i->next) {
1126 SPObject *obj = SP_OBJECT (i->data);
1127 SPStyle *style = SP_OBJECT_STYLE (obj);
1128 if (!style) continue;
1129 if (!SP_IS_ITEM(obj)) continue;
1131 NR::Matrix i2d = sp_item_i2d_affine (SP_ITEM(obj));
1133 items ++;
1135 //if object has a filter
1136 if (style->filter.set && style->getFilter()) {
1137 //cycle through filter primitives
1138 SPObject *primitive_obj = style->getFilter()->children;
1139 while (primitive_obj) {
1140 if (SP_IS_FILTER_PRIMITIVE(primitive_obj)) {
1141 SPFilterPrimitive *primitive = SP_FILTER_PRIMITIVE(primitive_obj);
1143 //if primitive is gaussianblur
1144 if(SP_IS_GAUSSIANBLUR(primitive)) {
1145 SPGaussianBlur * spblur = SP_GAUSSIANBLUR(primitive);
1146 float num = spblur->stdDeviation.getNumber();
1147 blur_sum += num * NR::expansion(i2d);
1148 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
1149 same_blur = false;
1150 blur_prev = num;
1151 //TODO: deal with opt number, for the moment it's not necessary to the ui.
1152 blur_items ++;
1153 }
1154 }
1155 primitive_obj = primitive_obj->next;
1156 }
1157 }
1158 }
1160 if (items > 0) {
1161 if (blur_items > 0)
1162 blur_sum /= blur_items;
1163 style_res->filter_gaussianBlur_deviation.value = blur_sum;
1164 }
1166 if (items == 0) {
1167 return QUERY_STYLE_NOTHING;
1168 } else if (items == 1) {
1169 return QUERY_STYLE_SINGLE;
1170 } else {
1171 if (same_blur)
1172 return QUERY_STYLE_MULTIPLE_SAME;
1173 else
1174 return QUERY_STYLE_MULTIPLE_AVERAGED;
1175 }
1176 }
1178 /**
1179 * Query the given list of objects for the given property, write
1180 * the result to style, return appropriate flag.
1181 */
1182 int
1183 sp_desktop_query_style_from_list (GSList *list, SPStyle *style, int property)
1184 {
1185 if (property == QUERY_STYLE_PROPERTY_FILL) {
1186 return objects_query_fillstroke (list, style, true);
1187 } else if (property == QUERY_STYLE_PROPERTY_STROKE) {
1188 return objects_query_fillstroke (list, style, false);
1190 } else if (property == QUERY_STYLE_PROPERTY_STROKEWIDTH) {
1191 return objects_query_strokewidth (list, style);
1192 } else if (property == QUERY_STYLE_PROPERTY_STROKEMITERLIMIT) {
1193 return objects_query_miterlimit (list, style);
1194 } else if (property == QUERY_STYLE_PROPERTY_STROKECAP) {
1195 return objects_query_strokecap (list, style);
1196 } else if (property == QUERY_STYLE_PROPERTY_STROKEJOIN) {
1197 return objects_query_strokejoin (list, style);
1199 } else if (property == QUERY_STYLE_PROPERTY_MASTEROPACITY) {
1200 return objects_query_opacity (list, style);
1202 } else if (property == QUERY_STYLE_PROPERTY_FONTFAMILY) {
1203 return objects_query_fontfamily (list, style);
1204 } else if (property == QUERY_STYLE_PROPERTY_FONTSTYLE) {
1205 return objects_query_fontstyle (list, style);
1206 } else if (property == QUERY_STYLE_PROPERTY_FONTNUMBERS) {
1207 return objects_query_fontnumbers (list, style);
1209 } else if (property == QUERY_STYLE_PROPERTY_BLEND) {
1210 return objects_query_blend (list, style);
1211 } else if (property == QUERY_STYLE_PROPERTY_BLUR) {
1212 return objects_query_blur (list, style);
1213 }
1214 return QUERY_STYLE_NOTHING;
1215 }
1218 /**
1219 * Query the subselection (if any) or selection on the given desktop for the given property, write
1220 * the result to style, return appropriate flag.
1221 */
1222 int
1223 sp_desktop_query_style(SPDesktop *desktop, SPStyle *style, int property)
1224 {
1225 int ret = desktop->_query_style_signal.emit(style, property);
1227 if (ret != QUERY_STYLE_NOTHING)
1228 return ret; // subselection returned a style, pass it on
1230 // otherwise, do querying and averaging over selection
1231 return sp_desktop_query_style_from_list ((GSList *) desktop->selection->itemList(), style, property);
1232 }
1234 /**
1235 * Do the same as sp_desktop_query_style for all (defined) style properties, return true if none of
1236 * the properties returned QUERY_STYLE_NOTHING.
1237 */
1238 bool
1239 sp_desktop_query_style_all (SPDesktop *desktop, SPStyle *query)
1240 {
1241 int result_family = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTFAMILY);
1242 int result_fstyle = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTSTYLE);
1243 int result_fnumbers = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FONTNUMBERS);
1244 int result_fill = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_FILL);
1245 int result_stroke = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKE);
1246 int result_strokewidth = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEWIDTH);
1247 int result_strokemiterlimit = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEMITERLIMIT);
1248 int result_strokecap = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKECAP);
1249 int result_strokejoin = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_STROKEJOIN);
1250 int result_opacity = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_MASTEROPACITY);
1251 int result_blur = sp_desktop_query_style (desktop, query, QUERY_STYLE_PROPERTY_BLUR);
1253 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);
1254 }
1257 /*
1258 Local Variables:
1259 mode:c++
1260 c-file-style:"stroustrup"
1261 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1262 indent-tabs-mode:nil
1263 fill-column:99
1264 End:
1265 */
1266 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :