test/rotated_text.cxx

   1 //
   2 // "$Id: label.cxx 6626 2009-01-12 14:52:45Z fabien $"
   3 //
   4 // Label test program for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 #include <FL/Fl.H>
  29 #include <FL/Fl_Double_Window.H>
  30 #include <FL/Fl_Box.H>
  31 #include <FL/Fl_Hor_Value_Slider.H>
  32 #include <FL/Fl_Toggle_Button.H>
  33 #include <FL/Fl_Input.H>
  34 #include <FL/Fl_Choice.H>
  35 #include <FL/fl_draw.H>
  36
  37 #include <math.h>
  38 #ifndef M_PI
  39 #define M_PI 3.141592654
  40 #endif
  41
  42 Fl_Toggle_Button *leftb,*rightb,*clipb;
  43 //Fl_Box *text;
  44 Fl_Input *input;
  45 Fl_Hor_Value_Slider *fonts;
  46 Fl_Hor_Value_Slider *sizes;
  47 Fl_Hor_Value_Slider *angles;
  48 Fl_Double_Window *window;
  49
  50 //code taken from fl_engraved_label.cxx
  51 class Rotated_Label_Box : public Fl_Widget{
  52   protected:
  53   void draw(){
  54     draw_box();
  55     fl_font(labelfont(), labelsize());
  56     fl_color(labelcolor());
  57     int dx(0),dy(0);
  58
  59     if(rt_align&FL_ALIGN_CLIP)fl_push_clip(x(),y(),w(),h());
  60     else fl_push_no_clip();
  61     fl_measure(rt_text,dx,dy);
  62     if(rt_align&FL_ALIGN_LEFT){
  63       dx=dy=0;
  64     }else if(rt_align&FL_ALIGN_RIGHT){
  65       dy=(int)(-sin(M_PI*(double)(rt_angle+180)/180.)*(double)dx);
  66       dx=(int)(cos(M_PI*(double)(rt_angle+180)/180.)*(double)dx);
  67     }else{
  68       dy=(int)(sin(M_PI*(double)rt_angle/180.)*(double)dx);
  69       dx=(int)(-cos(M_PI*(double)rt_angle/180.)*(double)dx);
  70       dx/=2;dy/=2;
  71     }
  72     if(labeltype()==FL_SHADOW_LABEL)shadow_label(x()+w()/2+dx,y()+h()/2+dy);
  73     else if(labeltype()==FL_ENGRAVED_LABEL)engraved_label(x()+w()/2+dx,y()+h()/2+dy);
  74     else if(labeltype()==FL_EMBOSSED_LABEL)embossed_label(x()+w()/2+dx,y()+h()/2+dy);
  75     else{
  76      fl_draw(rt_angle,rt_text,x()+w()/2+dx,y()+h()/2+dy);
  77     }
  78     fl_pop_clip();
  79     draw_label();
  80   }
  81   void innards(int X, int Y, int data[][3], int n){
  82     for (int i = 0; i < n; i++) {
  83       fl_color((Fl_Color)(i < n-1 ? data[i][2] : labelcolor()));
  84       fl_draw(rt_angle,rt_text, X+data[i][0], Y+data[i][1]);
  85     }
  86   }
  87
  88   void shadow_label(int X, int Y){
  89     static int data[2][3] = {{2,2,FL_DARK3},{0,0,0}};
  90     innards(X, Y, data, 2);
  91   }
  92
  93   void engraved_label(int X, int Y){
  94     static int data[7][3] = {
  95       {1,0,FL_LIGHT3},{1,1,FL_LIGHT3},{0,1,FL_LIGHT3},
  96       {-1,0,FL_DARK3},{-1,-1,FL_DARK3},{0,-1,FL_DARK3},
  97       {0,0,0}};
  98     innards(X, Y, data, 7);
  99   }
 100
 101   void embossed_label(int X, int Y){
 102     static int data[7][3] = {
 103       {-1,0,FL_LIGHT3},{-1,-1,FL_LIGHT3},{0,-1,FL_LIGHT3},
 104       {1,0,FL_DARK3},{1,1,FL_DARK3},{0,1,FL_DARK3},
 105       {0,0,0}};
 106     innards(X, Y, data, 7);
 107   }
 108
 109   public:
 110   Rotated_Label_Box(int X, int Y, int W, int H, const char*L=0):
 111     Fl_Widget(X,Y,W,H,L),rt_angle(0),rt_align((Fl_Align)0){
 112       rt_text=input->value();
 113     };
 114   int rt_angle;
 115   const char* rt_text;
 116   Fl_Align rt_align;
 117 }*text;
 118
 119
 120 void button_cb(Fl_Widget *,void *) {
 121   int i = 0;
 122   if (leftb->value()) i |= FL_ALIGN_LEFT;
 123   if (rightb->value()) i |= FL_ALIGN_RIGHT;
 124   if (clipb->value()) i |= FL_ALIGN_CLIP;
 125   text->rt_align=(Fl_Align)i;
 126   window->redraw();
 127 }
 128
 129 void font_cb(Fl_Widget *,void *) {
 130   text->labelfont(int(fonts->value()));
 131   window->redraw();
 132 }
 133
 134 void size_cb(Fl_Widget *,void *) {
 135   text->labelsize(int(sizes->value()));
 136   window->redraw();
 137 }
 138 void angle_cb(Fl_Widget *,void *) {
 139   text->rt_angle=(int)angles->value();
 140   window->redraw();
 141 }
 142
 143 void input_cb(Fl_Widget *,void *) {
 144   text->rt_text=input->value();
 145   window->redraw();
 146 }
 147
 148 void normal_cb(Fl_Widget *,void *) {
 149   text->labeltype(FL_NORMAL_LABEL);
 150   window->redraw();
 151 }
 152
 153 void shadow_cb(Fl_Widget *,void *) {
 154   text->labeltype(FL_SHADOW_LABEL);
 155   window->redraw();
 156 }
 157
 158 void embossed_cb(Fl_Widget *,void *) {
 159   text->labeltype(FL_EMBOSSED_LABEL);
 160   window->redraw();
 161 }
 162
 163 void engraved_cb(Fl_Widget *,void *) {
 164   text->labeltype(FL_ENGRAVED_LABEL);
 165   window->redraw();
 166 }
 167
 168 Fl_Menu_Item choices[] = {
 169   {"FL_NORMAL_LABEL",0,normal_cb},
 170   {"FL_SHADOW_LABEL",0,shadow_cb},
 171   {"FL_ENGRAVED_LABEL",0,engraved_cb},
 172   {"FL_EMBOSSED_LABEL",0,embossed_cb},
 173   {0}};
 174
 175 int main(int argc, char **argv) {
 176   window = new Fl_Double_Window(400,425);
 177
 178   angles= new Fl_Hor_Value_Slider(50,400,350,25,"Angle:");
 179   angles->align(FL_ALIGN_LEFT);
 180   angles->bounds(-360,360);
 181   angles->step(1);
 182   angles->value(0);
 183   angles->callback(angle_cb);
 184
 185   input = new Fl_Input(50,375,350,25);
 186   input->static_value("Rotate Me!!!");
 187   input->when(FL_WHEN_CHANGED);
 188   input->callback(input_cb);
 189
 190   sizes= new Fl_Hor_Value_Slider(50,350,350,25,"Size:");
 191   sizes->align(FL_ALIGN_LEFT);
 192   sizes->bounds(1,64);
 193   sizes->step(1);
 194   sizes->value(14);
 195   sizes->callback(size_cb);
 196
 197   fonts=new Fl_Hor_Value_Slider(50,325,350,25,"Font:");
 198   fonts->align(FL_ALIGN_LEFT);
 199   fonts->bounds(0,15);
 200   fonts->step(1);
 201   fonts->value(0);
 202   fonts->callback(font_cb);
 203
 204   Fl_Group *g = new Fl_Group(50,300,350,25);
 205   leftb = new Fl_Toggle_Button(50,300,50,25,"left");
 206   leftb->callback(button_cb);
 207   rightb = new Fl_Toggle_Button(100,300,50,25,"right");
 208   rightb->callback(button_cb);
 209   clipb = new Fl_Toggle_Button(350,300,50,25,"clip");
 210   clipb->callback(button_cb);
 211   g->resizable(rightb);
 212   g->end();
 213
 214   Fl_Choice *c = new Fl_Choice(50,275,200,25);
 215   c->menu(choices);
 216
 217   text= new Rotated_Label_Box(100,75,200,100,"Widget with rotated text");
 218   text->box(FL_FRAME_BOX);
 219   text->align(FL_ALIGN_BOTTOM);
 220   window->resizable(text);
 221   window->end();
 222   window->show(argc,argv);
 223   return Fl::run();
 224 }
 225
 226 //
 227 // End of "$Id: label.cxx 6626 2009-01-12 14:52:45Z fabien $".
 228 //