/* * Author: spencer jackson 2014 * ssjackson71@gmail.com * * This program 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 program 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ #ifndef FFF_DIAL_H #define FFF_DIAL_H #include #include #include #include #include "ffffltk_input.h" //avtk drawing method (adapted) static void default_dial_drawing(cairo_t *cr, float val) { cairo_set_line_join(cr, CAIRO_LINE_JOIN_ROUND); cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND); cairo_set_line_width(cr, 3.97); cairo_move_to( cr, 50, 50); cairo_line_to( cr, 50, 50); cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 0.4 ); // draw dash guide double dashes[2]; cairo_set_line_width(cr, 1.7); dashes[0] = 3.0; dashes[1] = 3.0; cairo_set_dash ( cr, dashes, 2, 0.0); cairo_stroke(cr); cairo_arc(cr, 50,50, 46, 2.46, 0.75 ); //cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4 ); cairo_stroke(cr); cairo_set_dash ( cr, dashes, 0, 0.0); float angle = 2.46 + ( 4.54 * val ); cairo_set_line_width(cr, 4.97); cairo_arc(cr, 50,50, 46, 2.46, angle ); cairo_line_to(cr, 50,50); cairo_set_source_rgba(cr, 1.0, 0.48, 0, 1.0); cairo_stroke(cr); } namespace ffffltk { class Dial : public Fl_Slider { public: Dial(int _x, int _y, int _w, int _h, const char* _label=0): Fl_Slider(_x, _y, _w, _h, _label) { x = _x; y = _y; w = _w; h = _h; drawing_w = 100; drawing_h = 100; drawing_f = &default_dial_drawing; floatvalue = value(); units[0] = 0; lock2int = 0; squaredmax = 0; drawLabel = true; enterval.winder = NULL; mouseClickedY = 0; mouseClicked = false; } int x, y, w, h; int drawLabel; int mouseClickedY; int mouseClickedX; bool mouseClicked; nonmodal_input enterval; int drawing_w; int drawing_h; void (*drawing_f)(cairo_t*,float);//function pointer to draw function float floatvalue; char units[6]; int lock2int;//flag to draw only integer values float squaredmax;// floatvalue = value()*value()*squaredmax; static void set_ffffltk_value(void* obj, float val) { Dial* me = (Dial*)obj; if(me->squaredmax)//remove squaring for bounds check me->floatvalue = sqrt(val/me->squaredmax); if ( val > me->maximum() ) val = me->maximum(); if ( val < me->minimum() ) val = me->minimum(); me->set_value(val); if(me->squaredmax) val = sqrt(val/me->squaredmax); me->floatvalue = val; me->do_callback(); me->redraw(); } void draw() { if (damage() & FL_DAMAGE_ALL) { cairo_t *cr = Fl::cairo_cc(); cairo_save( cr ); //calculate scale and centering double scale, shiftx=0, shifty=0; scale = w/(double)drawing_w; if(scale > h/(double)drawing_h) { scale = h/(double)drawing_h; shiftx = (w - scale*drawing_w)/2.f; } else shifty = h - scale*drawing_h; //label behind value //move to position in the window cairo_translate(cr,x+shiftx,y+shifty); //scale the drawing cairo_scale(cr,scale,scale); //call the draw function float val = value(); if(lock2int) val = (int)val; val = (val-minimum())/(maximum()-minimum()); if(drawing_f) drawing_f(cr,val); else default_dial_drawing(cr,val); cairo_restore( cr ); } } void resize(int X, int Y, int W, int H) { Fl_Slider::resize(X,Y,W,H); x = X; y = Y; w = W; h = H; redraw(); } int handle(int event) { //cout << "handle event type = " << event << " value = " << value() << endl; //Fl_Slider::handle( event ); float val = value(); char lable[20]; switch(event) { case FL_PUSH: //highlight = 1; if(Fl::event_button() == FL_MIDDLE_MOUSE || Fl::event_button() == FL_RIGHT_MOUSE) { // Fl_Window tmp* = new Fl_Window(Fl::event_x(),Fl::event_y(),100,200,"Enter Value"); //char n[20]; //sprintf(n,"%f",value()); //const char *r = fl_input("Enter Value:",n); //if(r!=NULL && sscanf(r,"%f",&val)) //{ // if ( val > maximum() ) val = maximum(); // if ( val < minimum() ) val = minimum(); // set_value(val); // floatvalue = val; //} // redraw(); //do_callback(); enterval.show(floatvalue,(char*)this->tooltip(),units,(void*)this,set_ffffltk_value); } return 1; case FL_DRAG: { if ( Fl::event_state(FL_BUTTON1) ) { if ( mouseClicked == false ) // catch the "click" event { mouseClickedX = Fl::event_x(); mouseClickedY = Fl::event_y(); mouseClicked = true; } float deltaX = Fl::event_x() - mouseClickedX; float deltaY = mouseClickedY - Fl::event_y(); if(step()) { val += deltaX *step()/100; val += deltaY *step();/// 100.f*(maximum()-minimum()); } else { val += deltaX/10000.f; val += deltaY/100.f; } if ( val > maximum() ) val = maximum(); if ( val < minimum() ) val = minimum(); set_value( val ); if(lock2int) val = (int)val; if(squaredmax) floatvalue = val*val*squaredmax; else floatvalue = val; mouseClickedY = Fl::event_y(); if(lock2int) sprintf(lable,"%1.0f%s",val,units); else sprintf(lable,"%1.3f%s",val,units); if(drawLabel)Fl_Widget::copy_label(lable); redraw(); do_callback(); // makes FLTK call "extra" code entered in FLUID } } return 1; case FL_RELEASE: //if (highlight) { // highlight = 0; Fl_Widget::copy_label(""); redraw(); if(squaredmax) floatvalue = value()*value()*squaredmax; else floatvalue = value(); // never do anything after a callback, as the callback // may delete the widget! //} mouseClicked = false; return 1; case FL_ENTER: if(lock2int) sprintf(lable,"%1.0f%s",val,units); else sprintf(lable,"%1.3f%s",val,units); if(drawLabel)Fl_Widget::copy_label(lable); redraw(); return 1; case FL_LEAVE: Fl_Widget::copy_label(""); redraw(); return 1; default: return Fl_Widget::handle(event); } } }; } // ffffltk #endif // FFF_DIAL_H