object-composite-settings.cpp revision 27802dfd0ec79acd49c0bf8a3b6cff62f9fd576c
/*
* 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>
*
* Copyright (C) 2004--2008 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <glibmm/i18n.h>
#include "desktop-handles.h"
#include "desktop-style.h"
#include "document.h"
#include "filter-chemistry.h"
#include "inkscape.h"
#include "inkscape-stock.h"
#include "selection.h"
#include "style.h"
#include "sp-item.h"
#include "svg/css-ostringstream.h"
#include "verbs.h"
#include "xml/repr.h"
#include "widgets/icon.h"
#include "ui/widget/object-composite-settings.h"
#include "display/sp-canvas.h"
namespace Inkscape {
namespace UI {
namespace Widget {
void ObjectCompositeSettings::_on_desktop_switch(
Inkscape::Application */*application*/,
SPDesktop *desktop,
ObjectCompositeSettings *w
) {
if (w->_subject) {
w->_subject->setDesktop(desktop);
}
}
ObjectCompositeSettings::ObjectCompositeSettings(unsigned int verb_code, char const *history_prefix, int flags)
: _verb_code(verb_code),
_blur_tag(Glib::ustring(history_prefix) + ":blur"),
_opacity_tag(Glib::ustring(history_prefix) + ":opacity"),
_opacity_vbox(false, 0),
_opacity_label_box(false, 0),
_opacity_label(_("Opacity, %"), 0.0, 1.0, true),
_opacity_adjustment(100.0, 0.0, 100.0, 1.0, 1.0, 0.0),
_opacity_hscale(_opacity_adjustment),
_opacity_spin_button(_opacity_adjustment, 0.01, 1),
_fe_cb(flags),
_fe_vbox(false, 0),
_fe_alignment(1, 1, 1, 1),
_blocked(false)
{
// Filter Effects
pack_start(_fe_vbox, false, false, 2);
_fe_alignment.set_padding(0, 0, 4, 0);
_fe_alignment.add(_fe_cb);
_fe_vbox.pack_start(_fe_alignment, false, false, 0);
_fe_cb.signal_blend_blur_changed().connect(sigc::mem_fun(*this, &ObjectCompositeSettings::_blendBlurValueChanged));
// Opacity
pack_start(_opacity_vbox, false, false, 2);
_opacity_label_box.pack_start(_opacity_label, false, false, 4);
_opacity_vbox.pack_start(_opacity_label_box, false, false, 0);
_opacity_vbox.pack_start(_opacity_hbox, false, false, 0);
_opacity_hbox.pack_start(_opacity_hscale, true, true, 4);
_opacity_hbox.pack_start(_opacity_spin_button, false, false, 0);
_opacity_hscale.set_draw_value(false);
_opacity_adjustment.signal_value_changed().connect(sigc::mem_fun(*this, &ObjectCompositeSettings::_opacityValueChanged));
show_all_children();
_desktop_activated = g_signal_connect ( G_OBJECT (INKSCAPE), "activate_desktop", G_CALLBACK (&ObjectCompositeSettings::_on_desktop_switch), this );
}
ObjectCompositeSettings::~ObjectCompositeSettings() {
setSubject(NULL);
g_signal_handler_disconnect(G_OBJECT(INKSCAPE), _desktop_activated);
}
void ObjectCompositeSettings::setSubject(StyleSubject *subject) {
_subject_changed.disconnect();
if (subject) {
_subject = subject;
_subject_changed = _subject->connectChanged(sigc::mem_fun(*this, &ObjectCompositeSettings::_subjectChanged));
_subject->setDesktop(SP_ACTIVE_DESKTOP);
}
}
void
ObjectCompositeSettings::_blendBlurValueChanged()
{
if (!_subject) {
return;
}
SPDesktop *desktop = _subject->getDesktop();
if (!desktop) {
return;
}
SPDocument *document = sp_desktop_document (desktop);
if (_blocked)
return;
_blocked = true;
// FIXME: fix for GTK breakage, see comment in SelectedStyle::on_opacity_changed; here it results in crash 1580903
sp_canvas_force_full_redraw_after_interruptions(sp_desktop_canvas(desktop), 0);
NR::Maybe<NR::Rect> bbox = _subject->getBounds(SPItem::GEOMETRIC_BBOX);
double radius;
if (bbox) {
double perimeter = bbox->extent(NR::X) + bbox->extent(NR::Y);
radius = _fe_cb.get_blur_value() * perimeter / 400;
} else {
radius = 0;
}
const Glib::ustring blendmode = _fe_cb.get_blend_mode();
//apply created filter to every selected item
for (StyleSubject::iterator i = _subject->begin() ; i != _subject->end() ; ++i ) {
if (!SP_IS_ITEM(*i)) {
continue;
}
SPItem * item = SP_ITEM(*i);
SPStyle *style = SP_OBJECT_STYLE(item);
g_assert(style != NULL);
if (blendmode != "normal") {
SPFilter *filter = new_filter_simple_from_item(document, item, blendmode.c_str(), radius);
sp_style_set_property_url(item, "filter", filter, false);
}
if (radius == 0 && item->style->filter.set
&& filter_is_single_gaussian_blur(SP_FILTER(item->style->getFilter()))) {
remove_filter(item, false);
}
else if (radius != 0) {
SPFilter *filter = modify_filter_gaussian_blur_from_item(document, item, radius);
sp_style_set_property_url(item, "filter", filter, false);
}
//request update
item->requestDisplayUpdate(( SP_OBJECT_MODIFIED_FLAG |
SP_OBJECT_STYLE_MODIFIED_FLAG ));
}
sp_document_maybe_done (document, _blur_tag.c_str(), _verb_code,
_("Change blur"));
// resume interruptibility
sp_canvas_end_forced_full_redraws(sp_desktop_canvas(desktop));
_blocked = false;
}
void
ObjectCompositeSettings::_opacityValueChanged()
{
if (!_subject) {
return;
}
SPDesktop *desktop = _subject->getDesktop();
if (!desktop) {
return;
}
if (_blocked)
return;
_blocked = true;
// FIXME: fix for GTK breakage, see comment in SelectedStyle::on_opacity_changed; here it results in crash 1580903
// UPDATE: crash fixed in GTK+ 2.10.7 (bug 374378), remove this as soon as it's reasonably common
// (though this only fixes the crash, not the multiple change events)
sp_canvas_force_full_redraw_after_interruptions(sp_desktop_canvas(desktop), 0);
SPCSSAttr *css = sp_repr_css_attr_new ();
Inkscape::CSSOStringStream os;
os << CLAMP (_opacity_adjustment.get_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);
sp_document_maybe_done (sp_desktop_document (desktop), _opacity_tag.c_str(), _verb_code,
_("Change opacity"));
// resume interruptibility
sp_canvas_end_forced_full_redraws(sp_desktop_canvas(desktop));
_blocked = false;
}
void
ObjectCompositeSettings::_subjectChanged() {
if (!_subject) {
return;
}
SPDesktop *desktop = _subject->getDesktop();
if (!desktop) {
return;
}
if (_blocked)
return;
_blocked = true;
SPStyle *query = sp_style_new (sp_desktop_document(desktop));
int result = _subject->queryStyle(query, QUERY_STYLE_PROPERTY_MASTEROPACITY);
switch (result) {
case QUERY_STYLE_NOTHING:
_opacity_hbox.set_sensitive(false);
// gtk_widget_set_sensitive (opa, FALSE);
break;
case QUERY_STYLE_SINGLE:
case QUERY_STYLE_MULTIPLE_AVERAGED: // TODO: treat this slightly differently
case QUERY_STYLE_MULTIPLE_SAME:
_opacity_hbox.set_sensitive(true);
_opacity_adjustment.set_value(100 * SP_SCALE24_TO_FLOAT(query->opacity.value));
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:
_fe_cb.set_sensitive(false);
break;
case QUERY_STYLE_SINGLE:
case QUERY_STYLE_MULTIPLE_SAME:
_fe_cb.set_blend_mode(query->filter_blend_mode.value);
_fe_cb.set_sensitive(true);
break;
case QUERY_STYLE_MULTIPLE_DIFFERENT:
// TODO: set text
_fe_cb.set_sensitive(false);
break;
}
if(blend_result == QUERY_STYLE_SINGLE || blend_result == QUERY_STYLE_MULTIPLE_SAME) {
int blur_result = _subject->queryStyle(query, QUERY_STYLE_PROPERTY_BLUR);
switch (blur_result) {
case QUERY_STYLE_NOTHING: //no blurring
_fe_cb.set_blur_sensitive(false);
break;
case QUERY_STYLE_SINGLE:
case QUERY_STYLE_MULTIPLE_AVERAGED:
case QUERY_STYLE_MULTIPLE_SAME:
NR::Maybe<NR::Rect> bbox = _subject->getBounds(SPItem::GEOMETRIC_BBOX);
if (bbox) {
double perimeter = bbox->extent(NR::X) + bbox->extent(NR::Y);
_fe_cb.set_blur_sensitive(true);
//update blur widget value
float radius = query->filter_gaussianBlur_deviation.value;
float percent = radius * 400 / perimeter; // so that for a square, 100% == half side
_fe_cb.set_blur_value(percent);
}
break;
}
}
sp_style_unref(query);
_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:encoding=utf-8:textwidth=99 :