#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 "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)

: _verb_code(verb_code),

_opacity_tag(Glib::ustring(history_prefix) + ":opacity"),

_blur_tag(Glib::ustring(history_prefix) + ":blur"),

_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_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);

}

}

ObjectCompositeSettings::_blendBlurValueChanged()

{

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

sp_canvas_force_full_redraw_after_interruptions(sp_desktop_canvas(desktop), 0);

NR::Maybe<NR::Rect> bbox = _subject->getBounds();

if (!bbox) {

return;

}

double perimeter = bbox->extent(NR::X) + bbox->extent(NR::Y);

const Glib::ustring blendmode = _fe_cb.get_blend_mode();

double radius = _fe_cb.get_blur_value() * perimeter / 400;

SPFilter *filter = 0;

const bool remfilter = (blendmode == "normal" && radius == 0) || (blendmode == "filter" && !filter);

if(blendmode != "filter" || filter) {

SPDocument *document = sp_desktop_document (desktop);

//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(remfilter) {

remove_filter (item, false);

}

else {

if(blendmode != "filter")

filter = new_filter_simple_from_item(document, item, blendmode.c_str(), radius);

sp_style_set_property_url (SP_OBJECT(item), "filter", SP_OBJECT(filter), false);

}

//request update

SP_OBJECT(item)->requestDisplayUpdate(( SP_OBJECT_MODIFIED_FLAG |

SP_OBJECT_STYLE_MODIFIED_FLAG ));

}

}

sp_document_maybe_done (sp_desktop_document (desktop), _blur_tag.c_str(), _verb_code, _("Change blur"));

// resume interruptibility

sp_canvas_end_forced_full_redraws(sp_desktop_canvas(desktop));

_blocked = false;

}

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;

}

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();

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;

}

}

}

}