ref: 3039e3b846a0ac47e3ebb52feec14784391dac36
dir: /DoConfig/fltk/test/rotated_text.cxx/
//
// "$Id$"
//
// Label test program for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Hor_Value_Slider.H>
#include <FL/Fl_Toggle_Button.H>
#include <FL/Fl_Input.H>
#include <FL/Fl_Choice.H>
#include <FL/fl_draw.H>
#include <math.h>
#ifndef M_PI
#define M_PI 3.141592654
#endif
Fl_Toggle_Button *leftb,*rightb,*clipb;
//Fl_Box *text;
Fl_Input *input;
Fl_Hor_Value_Slider *fonts;
Fl_Hor_Value_Slider *sizes;
Fl_Hor_Value_Slider *angles;
Fl_Double_Window *window;
//code taken from fl_engraved_label.cxx
class Rotated_Label_Box : public Fl_Widget{
protected:
void draw(){
draw_box();
fl_font(labelfont(), labelsize());
fl_color(labelcolor());
int dx(0),dy(0);
if(rt_align&FL_ALIGN_CLIP)fl_push_clip(x(),y(),w(),h());
else fl_push_no_clip();
fl_measure(rt_text,dx,dy);
if(rt_align&FL_ALIGN_LEFT){
dx=dy=0;
}else if(rt_align&FL_ALIGN_RIGHT){
dy=(int)(-sin(M_PI*(double)(rt_angle+180)/180.)*(double)dx);
dx=(int)(cos(M_PI*(double)(rt_angle+180)/180.)*(double)dx);
}else{
dy=(int)(sin(M_PI*(double)rt_angle/180.)*(double)dx);
dx=(int)(-cos(M_PI*(double)rt_angle/180.)*(double)dx);
dx/=2;dy/=2;
}
if(labeltype()==FL_SHADOW_LABEL)shadow_label(x()+w()/2+dx,y()+h()/2+dy);
else if(labeltype()==FL_ENGRAVED_LABEL)engraved_label(x()+w()/2+dx,y()+h()/2+dy);
else if(labeltype()==FL_EMBOSSED_LABEL)embossed_label(x()+w()/2+dx,y()+h()/2+dy);
else{
fl_draw(rt_angle,rt_text,x()+w()/2+dx,y()+h()/2+dy);
}
fl_pop_clip();
draw_label();
}
void innards(int X, int Y, int data[][3], int n){
for (int i = 0; i < n; i++) {
fl_color((Fl_Color)(i < n-1 ? data[i][2] : labelcolor()));
fl_draw(rt_angle,rt_text, X+data[i][0], Y+data[i][1]);
}
}
void shadow_label(int X, int Y){
static int data[2][3] = {{2,2,FL_DARK3},{0,0,0}};
innards(X, Y, data, 2);
}
void engraved_label(int X, int Y){
static int data[7][3] = {
{1,0,FL_LIGHT3},{1,1,FL_LIGHT3},{0,1,FL_LIGHT3},
{-1,0,FL_DARK3},{-1,-1,FL_DARK3},{0,-1,FL_DARK3},
{0,0,0}};
innards(X, Y, data, 7);
}
void embossed_label(int X, int Y){
static int data[7][3] = {
{-1,0,FL_LIGHT3},{-1,-1,FL_LIGHT3},{0,-1,FL_LIGHT3},
{1,0,FL_DARK3},{1,1,FL_DARK3},{0,1,FL_DARK3},
{0,0,0}};
innards(X, Y, data, 7);
}
public:
Rotated_Label_Box(int X, int Y, int W, int H, const char*L=0):
Fl_Widget(X,Y,W,H,L),rt_angle(0),rt_align((Fl_Align)0){
rt_text=input->value();
};
int rt_angle;
const char* rt_text;
Fl_Align rt_align;
}*text;
void button_cb(Fl_Widget *,void *) {
int i = 0;
if (leftb->value()) i |= FL_ALIGN_LEFT;
if (rightb->value()) i |= FL_ALIGN_RIGHT;
if (clipb->value()) i |= FL_ALIGN_CLIP;
text->rt_align=(Fl_Align)i;
window->redraw();
}
void font_cb(Fl_Widget *,void *) {
text->labelfont(int(fonts->value()));
window->redraw();
}
void size_cb(Fl_Widget *,void *) {
text->labelsize(int(sizes->value()));
window->redraw();
}
void angle_cb(Fl_Widget *,void *) {
text->rt_angle=(int)angles->value();
window->redraw();
}
void input_cb(Fl_Widget *,void *) {
text->rt_text=input->value();
window->redraw();
}
void normal_cb(Fl_Widget *,void *) {
text->labeltype(FL_NORMAL_LABEL);
window->redraw();
}
void shadow_cb(Fl_Widget *,void *) {
text->labeltype(FL_SHADOW_LABEL);
window->redraw();
}
void embossed_cb(Fl_Widget *,void *) {
text->labeltype(FL_EMBOSSED_LABEL);
window->redraw();
}
void engraved_cb(Fl_Widget *,void *) {
text->labeltype(FL_ENGRAVED_LABEL);
window->redraw();
}
Fl_Menu_Item choices[] = {
{"FL_NORMAL_LABEL",0,normal_cb},
{"FL_SHADOW_LABEL",0,shadow_cb},
{"FL_ENGRAVED_LABEL",0,engraved_cb},
{"FL_EMBOSSED_LABEL",0,embossed_cb},
{0}};
int main(int argc, char **argv) {
window = new Fl_Double_Window(400,425);
angles= new Fl_Hor_Value_Slider(50,400,350,25,"Angle:");
angles->align(FL_ALIGN_LEFT);
angles->bounds(-360,360);
angles->step(1);
angles->value(0);
angles->callback(angle_cb);
input = new Fl_Input(50,375,350,25);
input->static_value("Rotate Me!!!");
input->when(FL_WHEN_CHANGED);
input->callback(input_cb);
sizes= new Fl_Hor_Value_Slider(50,350,350,25,"Size:");
sizes->align(FL_ALIGN_LEFT);
sizes->bounds(1,64);
sizes->step(1);
sizes->value(14);
sizes->callback(size_cb);
fonts=new Fl_Hor_Value_Slider(50,325,350,25,"Font:");
fonts->align(FL_ALIGN_LEFT);
fonts->bounds(0,15);
fonts->step(1);
fonts->value(0);
fonts->callback(font_cb);
Fl_Group *g = new Fl_Group(50,300,350,25);
leftb = new Fl_Toggle_Button(50,300,50,25,"left");
leftb->callback(button_cb);
rightb = new Fl_Toggle_Button(100,300,50,25,"right");
rightb->callback(button_cb);
clipb = new Fl_Toggle_Button(350,300,50,25,"clip");
clipb->callback(button_cb);
g->resizable(rightb);
g->end();
Fl_Choice *c = new Fl_Choice(50,275,200,25);
c->menu(choices);
text= new Rotated_Label_Box(100,75,200,100,"Widget with rotated text");
text->box(FL_FRAME_BOX);
text->align(FL_ALIGN_BOTTOM);
window->resizable(text);
window->end();
window->show(argc,argv);
return Fl::run();
}
//
// End of "$Id$".
//