/* === S Y N F I G ========================================================= */
/*! \file state_gradient.cpp
** \brief Template File
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2008 Chris Moore
** Copyright (c) 2010 Carlos López
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
** \endlegal
*/
/* ========================================================================= */
/* === H E A D E R S ======================================================= */
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <synfig/general.h>
#include <synfig/valuenodes/valuenode_dynamiclist.h>
#include <synfigapp/action_system.h>
#include "state_gradient.h"
#include "state_normal.h"
#include "canvasview.h"
#include "workarea.h"
#include "app.h"
#include <synfigapp/action.h>
#include "event_mouse.h"
#include "event_layerclick.h"
#include "docks/dock_toolbox.h"
#include "docks/dialog_tooloptions.h"
#include "duck.h"
#include "widgets/widget_enum.h"
#include <synfigapp/main.h>
#include <gui/localization.h>
#endif
/* === U S I N G =========================================================== */
using namespace std;
using namespace etl;
using namespace synfig;
using namespace studio;
/* === M A C R O S ========================================================= */
#ifndef LAYER_CREATION
#define LAYER_CREATION(button, fun, stockid, tooltip) \
{ \
Gtk::Image *icon = manage(new Gtk::Image(Gtk::StockID(stockid), \
Gtk::ICON_SIZE_SMALL_TOOLBAR)); \
button.add(*icon); \
} \
button.set_relief(Gtk::RELIEF_NONE); \
button.set_tooltip_text(tooltip); \
button.signal_toggled().connect(sigc::mem_fun(*this, \
&studio::StateGradient_Context::fun))
#endif
// indentation for options layout
#ifndef SPACING
#define SPACING(name, px) \
Gtk::Alignment *name = Gtk::manage(new Gtk::Alignment()); \
name->set_size_request(px)
#endif
#define GAP (3)
#define INDENTATION (6)
/* === G L O B A L S ======================================================= */
StateGradient studio::state_gradient;
/* === C L A S S E S & S T R U C T S ======================================= */
class studio::StateGradient_Context : public sigc::trackable
{
etl::handle<CanvasView> canvas_view_;
CanvasView::IsWorking is_working;
Duckmatic::Push duckmatic_push;
synfigapp::Settings& settings;
Point point_holder;
etl::handle<Duck> point2_duck;
void refresh_ducks();
bool prev_workarea_layer_status_;
// holder of options
Gtk::Table options_table;
// title
Gtk::Label title_label;
// layer name:
Gtk::Label id_label;
Gtk::HBox id_box;
Gtk::Entry id_entry;
// layer types to create:
Gtk::Label layer_types_label;
Gtk::ToggleButton layer_circle_togglebutton;
Gtk::ToggleButton layer_linear_gradient_togglebutton;
Gtk::ToggleButton layer_radial_gradient_togglebutton;
Gtk::ToggleButton layer_conical_gradient_togglebutton;
Gtk::ToggleButton layer_spiral_gradient_togglebutton;
Gtk::HBox layer_types_box;
// blend method
Gtk::Label blend_label;
Gtk::HBox blend_box;
Widget_Enum blend_enum;
// opacity
Gtk::Label opacity_label;
Gtk::HScale opacity_hscl;
public:
synfig::String get_id()const { return id_entry.get_text(); }
void set_id(const synfig::String& x) { return id_entry.set_text(x); }
int get_blend()const { return blend_enum.get_value(); }
void set_blend(int x) { return blend_enum.set_value(x); }
Real get_opacity()const { return opacity_hscl.get_value(); }
void set_opacity(Real x) { opacity_hscl.set_value(x); }
Smach::event_result event_stop_handler(const Smach::event& x);
Smach::event_result event_refresh_handler(const Smach::event& x);
Smach::event_result event_mouse_click_handler(const Smach::event& x);
Smach::event_result event_refresh_tool_options(const Smach::event& x);
bool get_layer_linear_gradient_flag()const
{
return layer_linear_gradient_togglebutton.get_active();
}
void set_layer_linear_gradient_flag(bool x)
{
return layer_linear_gradient_togglebutton.set_active(x);
}
bool get_layer_radial_gradient_flag()const
{
return layer_radial_gradient_togglebutton.get_active();
}
void set_layer_radial_gradient_flag(bool x)
{
return layer_radial_gradient_togglebutton.set_active(x);
}
bool get_layer_conical_gradient_flag()const
{
return layer_conical_gradient_togglebutton.get_active();
}
void set_layer_conical_gradient_flag(bool x)
{
return layer_conical_gradient_togglebutton.set_active(x);
}
bool get_layer_spiral_gradient_flag()const
{
return layer_spiral_gradient_togglebutton.get_active();
}
void set_layer_spiral_gradient_flag(bool x)
{
return layer_spiral_gradient_togglebutton.set_active(x);
}
bool layer_linear_gradient_flag;
bool layer_radial_gradient_flag;
bool layer_conical_gradient_flag;
bool layer_spiral_gradient_flag;
void refresh_tool_options();
StateGradient_Context(CanvasView* canvas_view);
~StateGradient_Context();
const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
//void on_user_click(synfig::Point point);
void load_settings();
void save_settings();
void reset();
void increment_id();
void make_gradient(const Point& p1, const Point& p2);
bool egress_on_selection_change;
Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
{
if(egress_on_selection_change)
throw &state_normal; //throw Smach::egress_exception();
return Smach::RESULT_OK;
}
void toggle_layer_linear_gradient();
void toggle_layer_radial_gradient();
void toggle_layer_conical_gradient();
void toggle_layer_spiral_gradient();
}; // END of class StateGradient_Context
/* === M E T H O D S ======================================================= */
StateGradient::StateGradient():
Smach::state<StateGradient_Context>("gradient")
{
insert(event_def(EVENT_LAYER_SELECTION_CHANGED,&StateGradient_Context::event_layer_selection_changed_handler));
insert(event_def(EVENT_STOP,&StateGradient_Context::event_stop_handler));
insert(event_def(EVENT_TABLES_SHOW,&StateGradient_Context::event_stop_handler));
insert(event_def(EVENT_REFRESH,&StateGradient_Context::event_refresh_handler));
insert(event_def(EVENT_REFRESH_DUCKS,&StateGradient_Context::event_refresh_handler));
insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateGradient_Context::event_mouse_click_handler));
insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateGradient_Context::event_mouse_click_handler));
insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateGradient_Context::event_mouse_click_handler));
insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateGradient_Context::event_refresh_tool_options));
}
StateGradient::~StateGradient()
{
}
void
StateGradient_Context::load_settings()
{
try
{
synfig::ChangeLocale change_locale(LC_NUMERIC, "C");
String value;
if(settings.get_value("gradient.id",value))
set_id(value);
else
set_id("Gradient");
if(settings.get_value("gradient.layer_linear_gradient",value) && value=="0")
set_layer_linear_gradient_flag(false);
else
set_layer_linear_gradient_flag(true);
if(settings.get_value("gradient.layer_radial_gradient",value) && value=="0")
set_layer_radial_gradient_flag(false);
else
set_layer_radial_gradient_flag(true);
if(settings.get_value("gradient.layer_conical_gradient",value) && value=="0")
set_layer_conical_gradient_flag(false);
else
set_layer_conical_gradient_flag(true);
if(settings.get_value("gradient.layer_spiral_gradient",value) && value=="0")
set_layer_spiral_gradient_flag(false);
else
set_layer_spiral_gradient_flag(true);
if(settings.get_value("gradient.blend",value))
set_blend(atoi(value.c_str()));
else
set_blend(Color::BLEND_COMPOSITE);
if(settings.get_value("gradient.opacity",value))
set_opacity(atof(value.c_str()));
else
set_opacity(1);
// determine layer flags
layer_linear_gradient_flag = get_layer_linear_gradient_flag();
layer_radial_gradient_flag = get_layer_radial_gradient_flag();
layer_conical_gradient_flag = get_layer_conical_gradient_flag();
layer_spiral_gradient_flag = get_layer_spiral_gradient_flag();
}
catch(...)
{
synfig::warning("State Gradient: Caught exception when attempting to load settings.");
}
}
void
StateGradient_Context::save_settings()
{
try
{
synfig::ChangeLocale change_locale(LC_NUMERIC, "C");
settings.set_value("gradient.id",get_id().c_str());
settings.set_value("gradient.layer_linear_gradient",get_layer_linear_gradient_flag()?"1":"0");
settings.set_value("gradient.layer_radial_gradient",get_layer_radial_gradient_flag()?"1":"0");
settings.set_value("gradient.layer_conical_gradient",get_layer_conical_gradient_flag()?"1":"0");
settings.set_value("gradient.layer_spiral_gradient",get_layer_spiral_gradient_flag()?"1":"0");
settings.set_value("gradient.blend",strprintf("%d",get_blend()));
settings.set_value("gradient.opacity",strprintf("%f",(float)get_opacity()));
}
catch(...)
{
synfig::warning("State Gradient: Caught exception when attempting to save settings.");
}
}
void
StateGradient_Context::reset()
{
refresh_ducks();
}
void
StateGradient_Context::increment_id()
{
String id(get_id());
int number=1;
int digits=0;
if(id.empty())
id="Gradient";
// If there is a number
// already at the end of the
// id, then remove it.
if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
{
// figure out how many digits it is
for (digits = 0;
(int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
digits++)
;
String str_number;
str_number=String(id,id.size()-digits,id.size());
id=String(id,0,id.size()-digits);
number=atoi(str_number.c_str());
}
else
{
number=1;
digits=3;
}
number++;
// Add the number back onto the id
{
const String format(strprintf("%%0%dd",digits));
id+=strprintf(format.c_str(),number);
}
// Set the ID
set_id(id);
}
StateGradient_Context::StateGradient_Context(CanvasView* canvas_view):
canvas_view_(canvas_view),
is_working(*canvas_view),
duckmatic_push(get_work_area()),
settings(synfigapp::Main::get_selected_input_device()->settings()),
prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
opacity_hscl(0.0f, 1.0125f, 0.0125f)
{
egress_on_selection_change=true;
// Set up the tool options dialog
// title
title_label.set_label(_("Gradient Creation"));
Pango::AttrList list;
Pango::AttrInt attr = Pango::Attribute::create_attr_weight(Pango::WEIGHT_BOLD);
list.insert(attr);
title_label.set_attributes(list);
title_label.set_alignment(Gtk::ALIGN_START, Gtk::ALIGN_CENTER);
// layer name
id_label.set_label(_("Name:"));
SPACING(name_gap, GAP);
id_box.pack_start(id_label, Gtk::PACK_SHRINK);
id_box.pack_start(*name_gap, Gtk::PACK_SHRINK);
id_box.pack_start(id_entry, Gtk::PACK_EXPAND_WIDGET);
// layer (gradient) creation label
layer_types_label.set_label(_("Layer Type:"));
layer_types_label.set_alignment(Gtk::ALIGN_START, Gtk::ALIGN_CENTER);
// layer creation buttons
LAYER_CREATION(layer_linear_gradient_togglebutton, toggle_layer_linear_gradient,
("synfig-layer_gradient_linear"), _("Create a linear gradient"));
LAYER_CREATION(layer_radial_gradient_togglebutton, toggle_layer_radial_gradient,
("synfig-layer_gradient_radial"), _("Create a radial gradient"));
LAYER_CREATION(layer_conical_gradient_togglebutton, toggle_layer_conical_gradient,
("synfig-layer_gradient_conical"), _("Create a conical gradient"));
LAYER_CREATION(layer_spiral_gradient_togglebutton, toggle_layer_spiral_gradient,
("synfig-layer_gradient_spiral"), _("Create a spiral gradient"));
SPACING(layer_types_indent, INDENTATION);
layer_types_box.pack_start(*layer_types_indent, Gtk::PACK_SHRINK);
layer_types_box.pack_start(layer_linear_gradient_togglebutton, Gtk::PACK_SHRINK);
layer_types_box.pack_start(layer_radial_gradient_togglebutton, Gtk::PACK_SHRINK);
layer_types_box.pack_start(layer_conical_gradient_togglebutton, Gtk::PACK_SHRINK);
layer_types_box.pack_start(layer_spiral_gradient_togglebutton, Gtk::PACK_SHRINK);
// blend method label
blend_label.set_label(_("Blend Method:"));
blend_label.set_alignment(Gtk::ALIGN_START, Gtk::ALIGN_CENTER);
SPACING(blend_gap, GAP);
blend_box.pack_start(blend_label, Gtk::PACK_SHRINK);
blend_box.pack_start(*blend_gap, Gtk::PACK_SHRINK);
// blend method
blend_enum.set_param_desc(ParamDesc(Color::BLEND_COMPOSITE,"blend_method")
.set_local_name(_("Blend Method"))
.set_description(_("Defines the blend method to be used for gradients")));
// opacity label
opacity_label.set_label(_("Opacity:"));
opacity_label.set_alignment(Gtk::ALIGN_START, Gtk::ALIGN_CENTER);
// opacity
opacity_hscl.set_digits(2);
opacity_hscl.set_value_pos(Gtk::POS_LEFT);
opacity_hscl.set_tooltip_text(_("Opacity"));
// options table
// 0, title
options_table.attach(title_label,
0, 2, 0, 1, Gtk::FILL, Gtk::FILL, 0, 0
);
// 1, name
options_table.attach(id_box,
0, 2, 1, 2, Gtk::FILL, Gtk::FILL, 0, 0
);
// 2, layer types creation
options_table.attach(layer_types_label,
0, 2, 2, 3, Gtk::FILL, Gtk::FILL, 0, 0
);
options_table.attach(layer_types_box,
0, 2, 3, 4, Gtk::FILL, Gtk::FILL, 0, 0
);
// 3, blend method
options_table.attach(blend_box,
0, 1, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0
);
options_table.attach(blend_enum,
1, 2, 4, 5, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0
);
// 4, opacity
options_table.attach(opacity_label,
0, 1, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0
);
options_table.attach(opacity_hscl,
1, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0
);
// fine-tune options layout
options_table.set_border_width(GAP*2); // border width
options_table.set_row_spacings(GAP); // row gap
options_table.set_row_spacing(0, GAP*2); // the gap between first and second row.
options_table.set_row_spacing(2, 1); // row gap between label and icon of layer type
//options_table.set_row_spacing(6, 0); // the final row using border width of table
options_table.set_margin_bottom(0);
options_table.show_all();
load_settings();
refresh_tool_options();
App::dialog_tool_options->present();
// Turn off layer clicking
get_work_area()->set_allow_layer_clicks(false);
get_work_area()->set_cursor(Gdk::CROSSHAIR);
// clear out the ducks
get_work_area()->clear_ducks();
// Refresh the work area
get_work_area()->queue_draw();
get_work_area()->refresh_cursor();
// Hide the tables if they are showing
get_canvas_view()->hide_tables();
// Disable the time bar
//get_canvas_view()->set_sensitive_timebar(false);
// Connect a signal
//get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateGradient_Context::on_user_click));
App::dock_toolbox->refresh();
}
void
StateGradient_Context::refresh_tool_options()
{
App::dialog_tool_options->clear();
App::dialog_tool_options->set_widget(options_table);
App::dialog_tool_options->set_local_name(_("Gradient Tool"));
App::dialog_tool_options->set_name("gradient");
}
Smach::event_result
StateGradient_Context::event_refresh_tool_options(const Smach::event& /*x*/)
{
refresh_tool_options();
return Smach::RESULT_ACCEPT;
}
StateGradient_Context::~StateGradient_Context()
{
save_settings();
// Restore layer clicking
// get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
get_work_area()->set_allow_layer_clicks(true);
get_work_area()->reset_cursor();
App::dialog_tool_options->clear();
// Enable the time bar
//get_canvas_view()->set_sensitive_timebar(true);
// Bring back the tables if they were out before
//if(prev_table_status)get_canvas_view()->show_tables();
// Refresh the work area
get_work_area()->queue_draw();
get_canvas_view()->queue_rebuild_ducks();
//get_canvas_view()->show_tables();
get_work_area()->refresh_cursor();
App::dock_toolbox->refresh();
}
Smach::event_result
StateGradient_Context::event_stop_handler(const Smach::event& /*x*/)
{
//throw Smach::egress_exception();
throw &state_normal;
return Smach::RESULT_OK;
}
Smach::event_result
StateGradient_Context::event_refresh_handler(const Smach::event& /*x*/)
{
refresh_ducks();
return Smach::RESULT_ACCEPT;
}
void
StateGradient_Context::make_gradient(const Point& _p1, const Point& _p2)
{
synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New Gradient"));
synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
Layer::Handle layer;
Canvas::Handle canvas(get_canvas_view()->get_canvas());
int depth(0);
// we are temporarily using the layer to hold something
layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
if(layer)
{
depth=layer->get_depth();
canvas=layer->get_canvas();
}
const synfig::TransformStack& transform(get_work_area()->get_curr_transform_stack());
const Point p1(transform.unperform(_p1));
const Point p2(transform.unperform(_p2));
if (get_layer_linear_gradient_flag())
{
egress_on_selection_change=false;
layer=get_canvas_interface()->add_layer_to("linear_gradient",canvas,depth);
egress_on_selection_change=true;
if (!layer)
{
get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
group.cancel();
return;
}
layer->set_param("p1",p1);
get_canvas_interface()->signal_layer_param_changed()(layer,"p1");
layer->set_param("p2",p2);
get_canvas_interface()->signal_layer_param_changed()(layer,"p2");
}
else if (get_layer_radial_gradient_flag())
{
egress_on_selection_change=false;
layer=get_canvas_interface()->add_layer_to("radial_gradient",canvas,depth);
egress_on_selection_change=true;
if (!layer)
{
get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
group.cancel();
return;
}
layer->set_param("center",p1);
get_canvas_interface()->signal_layer_param_changed()(layer,"center");
layer->set_param("radius",(p2-p1).mag());
get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
}
else if (get_layer_conical_gradient_flag())
{
egress_on_selection_change=false;
layer=get_canvas_interface()->add_layer_to("conical_gradient",canvas,depth);
egress_on_selection_change=true;
if (!layer)
{
get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
group.cancel();
return;
}
layer->set_param("center",p1);
get_canvas_interface()->signal_layer_param_changed()(layer,"center");
{
Vector diff(p2-p1);
layer->set_param("angle",Angle::tan(diff[1],diff[0]));
get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
}
}
else if (get_layer_spiral_gradient_flag())
{
egress_on_selection_change=false;
layer=get_canvas_interface()->add_layer_to("spiral_gradient",canvas,depth);
egress_on_selection_change=true;
if (!layer)
{
get_canvas_view()->get_ui_interface()->error(_("Unable to create layer"));
group.cancel();
return;
}
layer->set_param("center",p1);
get_canvas_interface()->signal_layer_param_changed()(layer,"center");
layer->set_param("radius",(p2-p1).mag());
get_canvas_interface()->signal_layer_param_changed()(layer,"radius");
{
Vector diff(p2-p1);
layer->set_param("angle",Angle::tan(diff[1],diff[0]));
get_canvas_interface()->signal_layer_param_changed()(layer,"angle");
}
}
else return;
layer->set_param("blend_method", get_blend());
get_canvas_interface()->signal_layer_param_changed()(layer, "blend_method");
layer->set_param("amount", get_opacity());
get_canvas_interface()->signal_layer_param_changed()(layer, "amount");
layer->set_description(get_id());
get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
egress_on_selection_change=false;
synfigapp::SelectionManager::LayerList layer_selection;
if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
get_canvas_interface()->get_selection_manager()->clear_selected_layers();
layer_selection.push_back(layer);
get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
egress_on_selection_change=true;
reset();
increment_id();
}
Smach::event_result
StateGradient_Context::event_mouse_click_handler(const Smach::event& x)
{
const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DOWN && event.button==BUTTON_LEFT)
{
point_holder=get_work_area()->snap_point_to_grid(event.pos);
etl::handle<Duck> duck=new Duck();
duck->set_point(point_holder);
duck->set_name("p1");
duck->set_type(Duck::TYPE_POSITION);
get_work_area()->add_duck(duck);
point2_duck=new Duck();
point2_duck->set_point(point_holder);
point2_duck->set_name("p2");
point2_duck->set_type(Duck::TYPE_POSITION);
get_work_area()->add_duck(point2_duck);
handle<Duckmatic::Bezier> bezier(new Duckmatic::Bezier());
bezier->p1=bezier->c1=duck;
bezier->p2=bezier->c2=point2_duck;
get_work_area()->add_bezier(bezier);
return Smach::RESULT_ACCEPT;
}
if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_DRAG && event.button==BUTTON_LEFT)
{
if (!point2_duck) return Smach::RESULT_OK;
point2_duck->set_point(get_work_area()->snap_point_to_grid(event.pos));
get_work_area()->queue_draw();
return Smach::RESULT_ACCEPT;
}
if(event.key==EVENT_WORKAREA_MOUSE_BUTTON_UP && event.button==BUTTON_LEFT)
{
make_gradient(point_holder, get_work_area()->snap_point_to_grid(event.pos));
get_work_area()->clear_ducks();
return Smach::RESULT_ACCEPT;
}
return Smach::RESULT_OK;
}
void
StateGradient_Context::refresh_ducks()
{
get_work_area()->clear_ducks();
get_work_area()->queue_draw();
}
void
StateGradient_Context::toggle_layer_linear_gradient()
{
// enable linear gradient layer and disable the others
if(!layer_linear_gradient_flag)
{
set_layer_linear_gradient_flag(true);
set_layer_radial_gradient_flag(false);
set_layer_conical_gradient_flag(false);
set_layer_spiral_gradient_flag(false);
// update flags
layer_linear_gradient_flag = true;
layer_radial_gradient_flag = false;
layer_conical_gradient_flag = false;
layer_spiral_gradient_flag = false;
}
// don't allow to disable the enabled layer
if(get_layer_linear_gradient_flag() +
get_layer_radial_gradient_flag() +
get_layer_conical_gradient_flag() +
get_layer_spiral_gradient_flag() == 0
) set_layer_linear_gradient_flag(true);
}
void
StateGradient_Context::toggle_layer_radial_gradient()
{
// enable radial gradient layer and disable the others
if(!layer_radial_gradient_flag)
{
set_layer_linear_gradient_flag(false);
set_layer_radial_gradient_flag(true);
set_layer_spiral_gradient_flag(false);
set_layer_conical_gradient_flag(false);
// update flags
layer_linear_gradient_flag = false;
layer_radial_gradient_flag = true;
layer_conical_gradient_flag = false;
layer_spiral_gradient_flag = false;
}
// don't allow to disable the enabled layer
if(get_layer_linear_gradient_flag() +
get_layer_radial_gradient_flag() +
get_layer_conical_gradient_flag() +
get_layer_spiral_gradient_flag() == 0
) set_layer_radial_gradient_flag(true);
}
void
StateGradient_Context::toggle_layer_conical_gradient()
{
// enable conical gradient layer and disable the others
if(!layer_conical_gradient_flag)
{
set_layer_linear_gradient_flag(false);
set_layer_radial_gradient_flag(false);
set_layer_conical_gradient_flag(true);
set_layer_spiral_gradient_flag(false);
// update flags
layer_linear_gradient_flag = false;
layer_radial_gradient_flag = false;
layer_conical_gradient_flag = true;
layer_spiral_gradient_flag = false;
}
// don't allow to disable the enabled layer
if(get_layer_linear_gradient_flag() +
get_layer_radial_gradient_flag() +
get_layer_conical_gradient_flag() +
get_layer_spiral_gradient_flag() == 0
) set_layer_conical_gradient_flag(true);
}
void
StateGradient_Context::toggle_layer_spiral_gradient()
{
// enable spiral gradient layer and disable the others
if(!layer_spiral_gradient_flag)
{
set_layer_linear_gradient_flag(false);
set_layer_radial_gradient_flag(false);
set_layer_conical_gradient_flag(false);
set_layer_spiral_gradient_flag(true);
// update flags
layer_linear_gradient_flag = false;
layer_radial_gradient_flag = false;
layer_conical_gradient_flag = false;
layer_spiral_gradient_flag = true;
}
// don't allow to disable the enabled layer
if(get_layer_linear_gradient_flag() +
get_layer_radial_gradient_flag() +
get_layer_conical_gradient_flag() +
get_layer_spiral_gradient_flag() == 0
) set_layer_spiral_gradient_flag(true);
}