diff options
Diffstat (limited to 'src/ui/widget/object-composite-settings.cpp')
| -rw-r--r-- | src/ui/widget/object-composite-settings.cpp | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/src/ui/widget/object-composite-settings.cpp b/src/ui/widget/object-composite-settings.cpp new file mode 100644 index 0000000..9331e71 --- /dev/null +++ b/src/ui/widget/object-composite-settings.cpp @@ -0,0 +1,312 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * A widget for controlling object compositing (filter, opacity, etc.) + * + * Authors: + * Bryce W. Harrington <bryce@bryceharrington.org> + * Gustav Broberg <broberg@kth.se> + * Niko Kiirala <niko@kiirala.com> + * Abhishek Sharma + * + * Copyright (C) 2004--2008 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include "object-composite-settings.h" + +#include <utility> + +#include "desktop.h" +#include "desktop-style.h" +#include "document.h" +#include "document-undo.h" +#include "filter-chemistry.h" +#include "inkscape.h" +#include "style.h" + +#include "object/filters/blend.h" +#include "svg/css-ostringstream.h" +#include "ui/widget/style-subject.h" + +constexpr double BLUR_MULTIPLIER = 4.0; + +namespace Inkscape { +namespace UI { +namespace Widget { + +ObjectCompositeSettings::ObjectCompositeSettings(Glib::ustring icon_name, char const *history_prefix, int flags) +: Gtk::Box(Gtk::ORIENTATION_VERTICAL), + _icon_name(std::move(icon_name)), + _blend_tag(Glib::ustring(history_prefix) + ":blend"), + _blur_tag(Glib::ustring(history_prefix) + ":blur"), + _opacity_tag(Glib::ustring(history_prefix) + ":opacity"), + _isolation_tag(Glib::ustring(history_prefix) + ":isolation"), + _filter_modifier(flags), + _blocked(false) +{ + set_name( "ObjectCompositeSettings"); + + // Filter Effects + pack_start(_filter_modifier, false, false, 2); + + _filter_modifier.signal_blend_changed().connect(sigc::mem_fun(*this, &ObjectCompositeSettings::_blendBlurValueChanged)); + _filter_modifier.signal_blur_changed().connect(sigc::mem_fun(*this, &ObjectCompositeSettings::_blendBlurValueChanged)); + _filter_modifier.signal_opacity_changed().connect(sigc::mem_fun(*this, &ObjectCompositeSettings::_opacityValueChanged)); + _filter_modifier.signal_isolation_changed().connect( + sigc::mem_fun(*this, &ObjectCompositeSettings::_isolationValueChanged)); + + show_all_children(); +} + +ObjectCompositeSettings::~ObjectCompositeSettings() { + setSubject(nullptr); +} + +void ObjectCompositeSettings::setSubject(StyleSubject *subject) { + _subject_changed.disconnect(); + if (subject) { + _subject = subject; + _subject_changed = _subject->connectChanged(sigc::mem_fun(*this, &ObjectCompositeSettings::_subjectChanged)); + } +} + +// We get away with sharing one callback for blend and blur as this is used by +// * the Layers dialog where only one layer can be selected at a time, +// * the Fill and Stroke dialog where only blur is used. +// If both blend and blur are used in a dialog where more than one object can +// be selected then this should be split into separate functions for blend and +// blur (like in the Objects dialog). +void +ObjectCompositeSettings::_blendBlurValueChanged() +{ + if (!_subject) { + return; + } + + SPDesktop *desktop = _subject->getDesktop(); + if (!desktop) { + return; + } + SPDocument *document = desktop->getDocument(); + + if (_blocked) + return; + _blocked = true; + + Geom::OptRect bbox = _subject->getBounds(SPItem::GEOMETRIC_BBOX); + double radius; + if (bbox) { + double perimeter = bbox->dimensions()[Geom::X] + bbox->dimensions()[Geom::Y]; // fixme: this is only half the perimeter, is that correct? + double blur_value = _filter_modifier.get_blur_value() / 100.0; + radius = blur_value * blur_value * perimeter / BLUR_MULTIPLIER; + } else { + radius = 0; + } + + //apply created filter to every selected item + std::vector<SPObject*> sel = _subject->list(); + for (auto i : sel) { + if (!SP_IS_ITEM(i)) { + continue; + } + SPItem * item = SP_ITEM(i); + SPStyle *style = item->style; + g_assert(style != nullptr); + bool change_blend = (item->style->mix_blend_mode.set ? item->style->mix_blend_mode.value : SP_CSS_BLEND_NORMAL) != _filter_modifier.get_blend_mode(); + // < 1.0 filter based blend removal + if (!item->style->mix_blend_mode.set && item->style->filter.set && item->style->getFilter()) { + remove_filter_legacy_blend(item); + } + item->style->mix_blend_mode.set = TRUE; + if (item->style->isolation.value == SP_CSS_ISOLATION_ISOLATE) { + item->style->mix_blend_mode.value = SP_CSS_BLEND_NORMAL; + } else { + item->style->mix_blend_mode.value = _filter_modifier.get_blend_mode(); + } + + if (radius == 0 && item->style->filter.set && item->style->getFilter() + && filter_is_single_gaussian_blur(item->style->getFilter())) { + remove_filter(item, false); + } else if (radius != 0) { + SPFilter *filter = modify_filter_gaussian_blur_from_item(document, item, radius); + filter->update_filter_region(item); + sp_style_set_property_url(item, "filter", filter, false); + } + if (change_blend) { //we do blend so we need update display style + item->updateRepr(SP_OBJECT_WRITE_NO_CHILDREN | SP_OBJECT_WRITE_EXT); + } else { + item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); + } + } + + DocumentUndo::maybeDone(document, _blur_tag.c_str(), _("Change blur/blend filter"), _icon_name); + + _blocked = false; +} + +void +ObjectCompositeSettings::_opacityValueChanged() +{ + if (!_subject) { + return; + } + + SPDesktop *desktop = _subject->getDesktop(); + if (!desktop) { + return; + } + + if (_blocked) + return; + _blocked = true; + + SPCSSAttr *css = sp_repr_css_attr_new (); + + Inkscape::CSSOStringStream os; + os << CLAMP (_filter_modifier.get_opacity_value() / 100, 0.0, 1.0); + sp_repr_css_set_property (css, "opacity", os.str().c_str()); + + _subject->setCSS(css); + + sp_repr_css_attr_unref (css); + + DocumentUndo::maybeDone(desktop->getDocument(), _opacity_tag.c_str(), _("Change opacity"), _icon_name); + + _blocked = false; +} + +void ObjectCompositeSettings::_isolationValueChanged() +{ + if (!_subject) { + return; + } + + SPDesktop *desktop = _subject->getDesktop(); + if (!desktop) { + return; + } + + if (_blocked) + return; + _blocked = true; + + for (auto item : _subject->list()) { + item->style->isolation.set = TRUE; + item->style->isolation.value = _filter_modifier.get_isolation_mode(); + if (item->style->isolation.value == SP_CSS_ISOLATION_ISOLATE) { + item->style->mix_blend_mode.set = TRUE; + item->style->mix_blend_mode.value = SP_CSS_BLEND_NORMAL; + } + item->updateRepr(SP_OBJECT_WRITE_NO_CHILDREN | SP_OBJECT_WRITE_EXT); + } + + DocumentUndo::maybeDone(desktop->getDocument(), _isolation_tag.c_str(), _("Change isolation"), _icon_name); + + _blocked = false; +} + +void +ObjectCompositeSettings::_subjectChanged() { + if (!_subject) { + return; + } + + SPDesktop *desktop = _subject->getDesktop(); + if (!desktop) { + return; + } + + if (_blocked) + return; + _blocked = true; + SPStyle query(desktop->getDocument()); + int result = _subject->queryStyle(&query, QUERY_STYLE_PROPERTY_MASTEROPACITY); + + switch (result) { + case QUERY_STYLE_NOTHING: + break; + case QUERY_STYLE_SINGLE: + case QUERY_STYLE_MULTIPLE_AVERAGED: // TODO: treat this slightly differently + case QUERY_STYLE_MULTIPLE_SAME: + _filter_modifier.set_opacity_value(100 * SP_SCALE24_TO_FLOAT(query.opacity.value)); + break; + } + + //query now for current filter mode and average blurring of selection + const int isolation_result = _subject->queryStyle(&query, QUERY_STYLE_PROPERTY_ISOLATION); + switch (isolation_result) { + case QUERY_STYLE_NOTHING: + _filter_modifier.set_isolation_mode(SP_CSS_ISOLATION_AUTO, false); + break; + case QUERY_STYLE_SINGLE: + case QUERY_STYLE_MULTIPLE_SAME: + _filter_modifier.set_isolation_mode(query.isolation.value, true); // here dont work mix_blend_mode.set + break; + case QUERY_STYLE_MULTIPLE_DIFFERENT: + _filter_modifier.set_isolation_mode(SP_CSS_ISOLATION_AUTO, false); + // TODO: set text + break; + } + + // query now for current filter mode and average blurring of selection + const int blend_result = _subject->queryStyle(&query, QUERY_STYLE_PROPERTY_BLEND); + switch(blend_result) { + case QUERY_STYLE_NOTHING: + _filter_modifier.set_blend_mode(SP_CSS_BLEND_NORMAL, false); + break; + case QUERY_STYLE_SINGLE: + case QUERY_STYLE_MULTIPLE_SAME: + _filter_modifier.set_blend_mode(query.mix_blend_mode.value, true); // here dont work mix_blend_mode.set + break; + case QUERY_STYLE_MULTIPLE_DIFFERENT: + _filter_modifier.set_blend_mode(SP_CSS_BLEND_NORMAL, false); + break; + } + + int blur_result = _subject->queryStyle(&query, QUERY_STYLE_PROPERTY_BLUR); + switch (blur_result) { + case QUERY_STYLE_NOTHING: // no blurring + _filter_modifier.set_blur_value(0); + break; + case QUERY_STYLE_SINGLE: + case QUERY_STYLE_MULTIPLE_AVERAGED: + case QUERY_STYLE_MULTIPLE_SAME: + Geom::OptRect bbox = _subject->getBounds(SPItem::GEOMETRIC_BBOX); + if (bbox) { + double perimeter = + bbox->dimensions()[Geom::X] + + bbox->dimensions()[Geom::Y]; // fixme: this is only half the perimeter, is that correct? + // update blur widget value + float radius = query.filter_gaussianBlur_deviation.value; + float percent = std::sqrt(radius * BLUR_MULTIPLIER / perimeter) * 100; + _filter_modifier.set_blur_value(percent); + } + break; + } + + // If we have nothing selected, disable dialog. + if (result == QUERY_STYLE_NOTHING && + blend_result == QUERY_STYLE_NOTHING ) { + _filter_modifier.set_sensitive( false ); + } else { + _filter_modifier.set_sensitive( true ); + } + + _blocked = false; +} + +} +} +} + +/* + 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:fileencoding=utf-8:textwidth=99 : |