1 /* === S Y N F I G ========================================================= */
2 /*! \file widget_gradient.cpp
3 ** \brief Template File
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
10 ** This package is free software; you can redistribute it and/or
11 ** modify it under the terms of the GNU General Public License as
12 ** published by the Free Software Foundation; either version 2 of
13 ** the License, or (at your option) any later version.
15 ** This package is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ** General Public License for more details.
21 /* ========================================================================= */
23 /* === H E A D E R S ======================================================= */
32 #include "widget_gradient.h"
34 #include <gtkmm/menu.h>
35 #include <synfig/exception.h>
40 /* === U S I N G =========================================================== */
44 using namespace synfig;
45 using namespace studio;
47 /* === M A C R O S ========================================================= */
49 /* === G L O B A L S ======================================================= */
51 /* === P R O C E D U R E S ================================================= */
54 studio::render_gradient_to_window(const Glib::RefPtr<Gdk::Drawable>& window,const Gdk::Rectangle& ca,const synfig::Gradient &gradient)
56 int height = ca.get_height();
57 int width = ca.get_width()-4;
59 float sample_width(1.0f/(float)width);
60 Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(window));
61 const Color bg1(0.25, 0.25, 0.25);
62 const Color bg2(0.5, 0.5, 0.5);
67 const Color c(gradient(float(i)/float(width),sample_width));
68 const Color c1(Color::blend(c,bg1,1.0).clamped());
69 const Color c2(Color::blend(c,bg2,1.0).clamped());
70 gushort r1(256*App::gamma.r_F32_to_U8(c1.get_r()));
71 gushort g1(256*App::gamma.g_F32_to_U8(c1.get_g()));
72 gushort b1(256*App::gamma.b_F32_to_U8(c1.get_b()));
73 gushort r2(256*App::gamma.r_F32_to_U8(c2.get_r()));
74 gushort g2(256*App::gamma.g_F32_to_U8(c2.get_g()));
75 gushort b2(256*App::gamma.b_F32_to_U8(c2.get_b()));
79 gdk_c.set_rgb(r1,g1,b1);
80 gc->set_rgb_fg_color(gdk_c);
81 window->draw_rectangle(gc, true, ca.get_x()+i+2, ca.get_y(), 1, height/2);
83 gdk_c.set_rgb(r2,g2,b2);
84 gc->set_rgb_fg_color(gdk_c);
85 window->draw_rectangle(gc, true, ca.get_x()+i+2, ca.get_y()+height/2, 1, height/2);
89 gdk_c.set_rgb(r2,g2,b2);
90 gc->set_rgb_fg_color(gdk_c);
91 window->draw_rectangle(gc, true, ca.get_x()+i+2, ca.get_y(), 1, height/2);
93 gdk_c.set_rgb(r1,g1,b1);
94 gc->set_rgb_fg_color(gdk_c);
95 window->draw_rectangle(gc, true, ca.get_x()+i+2, ca.get_y()+height/2, 1, height/2);
98 gc->set_rgb_fg_color(Gdk::Color("#ffffff"));
99 window->draw_rectangle(gc, false, ca.get_x()+1, ca.get_y()+1, ca.get_width()-3, height-3);
100 gc->set_rgb_fg_color(Gdk::Color("#000000"));
101 window->draw_rectangle(gc, false, ca.get_x(), ca.get_y(), ca.get_width()-1, height-1);
104 /* === M E T H O D S ======================================================= */
106 Widget_Gradient::Widget_Gradient():
109 set_size_request(-1,64);
110 signal_expose_event().connect(sigc::mem_fun(*this, &studio::Widget_Gradient::redraw));
111 add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
112 add_events(Gdk::BUTTON1_MOTION_MASK);
116 Widget_Gradient::~Widget_Gradient()
120 #define CONTROL_HEIGHT 16
122 Widget_Gradient::redraw(GdkEventExpose */*bleh*/)
124 const int h(get_height());
125 const int w(get_width());
127 Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(get_window()));
128 Gdk::Rectangle area(0,0,w,h);
131 render_gradient_to_window(get_window(),area,gradient_);
135 render_gradient_to_window(get_window(),Gdk::Rectangle(0,0,w,h-CONTROL_HEIGHT),gradient_);
137 gc->set_rgb_fg_color(Gdk::Color("#7f7f7f"));
138 get_window()->draw_rectangle(gc, false, 0, h-CONTROL_HEIGHT, w, CONTROL_HEIGHT);
140 Gradient::iterator iter,selected_iter;
141 bool show_selected(false);
142 for(iter=gradient_.begin();iter!=gradient_.end();iter++)
144 if(*iter!=selected_cpoint)
145 get_style()->paint_arrow(
147 (*iter==selected_cpoint)?Gtk::STATE_SELECTED:Gtk::STATE_ACTIVE,
154 int(iter->pos*w)-CONTROL_HEIGHT/2+1,
166 // we do this so that we can be sure that
167 // the selected marker is shown on top
170 get_style()->paint_arrow(
179 round_to_int(selected_iter->pos*w)-CONTROL_HEIGHT/2+1,
190 Widget_Gradient::insert_cpoint(float x)
192 Gradient::CPoint new_cpoint;
194 new_cpoint.color=gradient_(x);
195 gradient_.push_back(new_cpoint);
198 set_selected_cpoint(new_cpoint);
203 Widget_Gradient::remove_cpoint(float x)
205 gradient_.erase(gradient_.proximity(x));
206 signal_value_changed_();
211 Widget_Gradient::popup_menu(float x)
213 Gtk::Menu* menu(manage(new Gtk::Menu()));
215 menu->items().clear();
217 menu->items().push_back(
218 Gtk::Menu_Helpers::MenuElem(
221 sigc::mem_fun(*this,&studio::Widget_Gradient::insert_cpoint),
227 if(!gradient_.empty())
229 menu->items().push_back(
230 Gtk::Menu_Helpers::MenuElem(
233 sigc::mem_fun(*this,&studio::Widget_Gradient::remove_cpoint),
244 Widget_Gradient::set_value(const synfig::Gradient& x)
248 set_selected_cpoint(*gradient_.proximity(0.0f));
253 Widget_Gradient::set_selected_cpoint(const synfig::Gradient::CPoint &x)
256 signal_cpoint_selected_(selected_cpoint);
261 Widget_Gradient::update_cpoint(const synfig::Gradient::CPoint &x)
265 Gradient::iterator iter(gradient_.find(x));
271 catch(synfig::Exception::NotFound)
278 Widget_Gradient::on_event(GdkEvent *event)
282 const int x(static_cast<int>(event->button.x));
283 const int y(static_cast<int>(event->button.y));
285 float pos((float)x/(float)get_width());
286 if(pos<0.0f)pos=0.0f;
287 if(pos>1.0f)pos=1.0f;
291 case GDK_MOTION_NOTIFY:
292 if(editable_ && y>get_height()-CONTROL_HEIGHT)
294 Gradient::iterator iter(gradient_.find(selected_cpoint));
296 if(event->button.state&GDK_SHIFT_MASK)
298 float begin(-100000000),end(100000000);
299 Gradient::iterator before(iter),after(iter);
301 if(iter!=gradient_.begin())
306 if(after!=gradient_.end())
324 // signal_value_changed_();
330 case GDK_BUTTON_PRESS:
332 if(event->button.button==1)
334 if(editable_ && y>get_height()-CONTROL_HEIGHT)
336 set_selected_cpoint(*gradient_.proximity(pos));
346 else if(editable_ && event->button.button==3)
352 case GDK_BUTTON_RELEASE:
353 if(editable_ && event->button.button==1 && y>get_height()-CONTROL_HEIGHT)
355 set_selected_cpoint(*gradient_.proximity(pos));
356 if(changed_)signal_value_changed_();