add rotated text example
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test/rotated_text.cxx
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228
test/rotated_text.cxx
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//
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// "$Id: label.cxx 6626 2009-01-12 14:52:45Z fabien $"
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//
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// Label test program for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2009 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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#include <FL/Fl.H>
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#include <FL/Fl_Double_Window.H>
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#include <FL/Fl_Box.H>
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#include <FL/Fl_Hor_Value_Slider.H>
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#include <FL/Fl_Toggle_Button.H>
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#include <FL/Fl_Input.H>
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#include <FL/Fl_Choice.H>
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#include <FL/fl_draw.H>
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#include <math.h>
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#ifndef M_PI
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#define M_PI 3.141592654
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#endif
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Fl_Toggle_Button *leftb,*rightb,*clipb;
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//Fl_Box *text;
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Fl_Input *input;
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Fl_Hor_Value_Slider *fonts;
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Fl_Hor_Value_Slider *sizes;
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Fl_Hor_Value_Slider *angles;
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Fl_Double_Window *window;
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//code taken from fl_engraved_label.cxx
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class Rotated_Label_Box : public Fl_Widget{
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protected:
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void draw(){
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draw_box();
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fl_font(labelfont(), labelsize());
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fl_color(labelcolor());
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int dx(0),dy(0);
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if(rt_align&FL_ALIGN_CLIP)fl_push_clip(x(),y(),w(),h());
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else fl_push_no_clip();
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fl_measure(rt_text,dx,dy);
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if(rt_align&FL_ALIGN_LEFT){
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dx=dy=0;
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}else if(rt_align&FL_ALIGN_RIGHT){
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dy=-sin(M_PI*(double)(rt_angle+180)/180.)*(double)dx;
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dx=cos(M_PI*(double)(rt_angle+180)/180.)*(double)dx;
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}else{
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dy=sin(M_PI*(double)rt_angle/180.)*(double)dx;
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dx=-cos(M_PI*(double)rt_angle/180.)*(double)dx;
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dx/=2;dy/=2;
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}
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if(labeltype()==FL_SHADOW_LABEL)shadow_label(x()+w()/2+dx,y()+h()/2+dy);
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else if(labeltype()==FL_ENGRAVED_LABEL)engraved_label(x()+w()/2+dx,y()+h()/2+dy);
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else if(labeltype()==FL_EMBOSSED_LABEL)embossed_label(x()+w()/2+dx,y()+h()/2+dy);
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else{
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fl_draw(rt_angle,rt_text,x()+w()/2+dx,y()+h()/2+dy);
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}
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fl_pop_clip();
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draw_label();
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}
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void innards(int X, int Y, int data[][3], int n){
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for (int i = 0; i < n; i++) {
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fl_color((Fl_Color)(i < n-1 ? data[i][2] : labelcolor()));
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fl_draw(rt_angle,rt_text, X+data[i][0], Y+data[i][1]);
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}
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}
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void shadow_label(int X, int Y){
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static int data[2][3] = {{2,2,FL_DARK3},{0,0,0}};
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innards(X, Y, data, 2);
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}
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void engraved_label(int X, int Y){
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static int data[7][3] = {
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{1,0,FL_LIGHT3},{1,1,FL_LIGHT3},{0,1,FL_LIGHT3},
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{-1,0,FL_DARK3},{-1,-1,FL_DARK3},{0,-1,FL_DARK3},
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{0,0,0}};
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innards(X, Y, data, 7);
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}
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void embossed_label(int X, int Y){
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static int data[7][3] = {
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{-1,0,FL_LIGHT3},{-1,-1,FL_LIGHT3},{0,-1,FL_LIGHT3},
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{1,0,FL_DARK3},{1,1,FL_DARK3},{0,1,FL_DARK3},
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{0,0,0}};
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innards(X, Y, data, 7);
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}
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public:
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Rotated_Label_Box(int X, int Y, int W, int H, const char*L=0):
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Fl_Widget(X,Y,W,H,L),rt_angle(0),rt_align((Fl_Align)0){
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rt_text=input->value();
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};
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int rt_angle;
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const char* rt_text;
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Fl_Align rt_align;
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}*text;
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void button_cb(Fl_Widget *,void *) {
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int i = 0;
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if (leftb->value()) i |= FL_ALIGN_LEFT;
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if (rightb->value()) i |= FL_ALIGN_RIGHT;
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if (clipb->value()) i |= FL_ALIGN_CLIP;
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text->rt_align=(Fl_Align)i;
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window->redraw();
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}
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void font_cb(Fl_Widget *,void *) {
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text->labelfont(int(fonts->value()));
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window->redraw();
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}
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void size_cb(Fl_Widget *,void *) {
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text->labelsize(int(sizes->value()));
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window->redraw();
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}
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void angle_cb(Fl_Widget *,void *) {
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text->rt_angle=angles->value();
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window->redraw();
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}
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void input_cb(Fl_Widget *,void *) {
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text->rt_text=input->value();
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window->redraw();
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}
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void normal_cb(Fl_Widget *,void *) {
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text->labeltype(FL_NORMAL_LABEL);
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window->redraw();
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}
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void shadow_cb(Fl_Widget *,void *) {
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text->labeltype(FL_SHADOW_LABEL);
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window->redraw();
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}
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void embossed_cb(Fl_Widget *,void *) {
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text->labeltype(FL_EMBOSSED_LABEL);
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window->redraw();
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}
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void engraved_cb(Fl_Widget *,void *) {
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text->labeltype(FL_ENGRAVED_LABEL);
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window->redraw();
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}
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Fl_Menu_Item choices[] = {
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{"FL_NORMAL_LABEL",0,normal_cb},
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{"FL_SHADOW_LABEL",0,shadow_cb},
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{"FL_ENGRAVED_LABEL",0,engraved_cb},
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{"FL_EMBOSSED_LABEL",0,embossed_cb},
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{0}};
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int main(int argc, char **argv) {
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window = new Fl_Double_Window(400,425);
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angles= new Fl_Hor_Value_Slider(50,400,350,25,"Angle:");
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angles->align(FL_ALIGN_LEFT);
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angles->bounds(-360,360);
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angles->step(1);
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angles->value(0);
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angles->callback(angle_cb);
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input = new Fl_Input(50,375,350,25);
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input->static_value("Rotate Me!!!");
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input->when(FL_WHEN_CHANGED);
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input->callback(input_cb);
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sizes= new Fl_Hor_Value_Slider(50,350,350,25,"Size:");
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sizes->align(FL_ALIGN_LEFT);
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sizes->bounds(1,64);
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sizes->step(1);
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sizes->value(14);
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sizes->callback(size_cb);
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fonts=new Fl_Hor_Value_Slider(50,325,350,25,"Font:");
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fonts->align(FL_ALIGN_LEFT);
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fonts->bounds(0,15);
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fonts->step(1);
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fonts->value(0);
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fonts->callback(font_cb);
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Fl_Group *g = new Fl_Group(50,300,350,25);
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leftb = new Fl_Toggle_Button(50,300,50,25,"left");
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leftb->callback(button_cb);
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rightb = new Fl_Toggle_Button(100,300,50,25,"right");
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rightb->callback(button_cb);
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clipb = new Fl_Toggle_Button(350,300,50,25,"clip");
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clipb->callback(button_cb);
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g->resizable(rightb);
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g->end();
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Fl_Choice *c = new Fl_Choice(50,275,200,25);
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c->menu(choices);
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text= new Rotated_Label_Box(100,75,200,100,"Widget with rotated text");
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text->box(FL_FRAME_BOX);
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text->align(FL_ALIGN_BOTTOM);
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window->resizable(text);
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window->end();
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window->show(argc,argv);
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return Fl::run();
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}
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//
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// End of "$Id: label.cxx 6626 2009-01-12 14:52:45Z fabien $".
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//
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