add rotated text example

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6780 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 228 insertions, 0 deletions

diff --git a/test/rotated_text.cxx b/test/rotated_text.cxx
new file mode 100644
index 000000000..faf79fc8b
--- /dev/null
+++ b/test/rotated_text.cxx
@@ -0,0 +1,228 @@
+//
+// "$Id: label.cxx 6626 2009-01-12 14:52:45Z fabien $"
+//
+// Label test program for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2009 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library 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
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// 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=-sin(M_PI*(double)(rt_angle+180)/180.)*(double)dx;
+      dx=cos(M_PI*(double)(rt_angle+180)/180.)*(double)dx;
+    }else{
+      dy=sin(M_PI*(double)rt_angle/180.)*(double)dx;
+      dx=-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=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: label.cxx 6626 2009-01-12 14:52:45Z fabien $".
+//