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Add Fl_Scheme_Choice to examples/tree-custom-draw-items 

- add Fl_Scheme_Choice widget for quick scheme selection
- fix label alignment of selection box
- set selection_color()
- set selectbox()
- make the tree the resizable() of the window
This commit is contained in:
Albrecht Schlosser 2023-01-12 00:25:21 +01:00
parent bafd3fd3d7
commit a29c0e36fd
1 changed files with 22 additions and 6 deletions
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28
examples/tree-custom-draw-items.cxx
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@ -2,7 +2,7 @@
// Demonstrate Fl_Tree custom item draw callback. - erco 11/09/2013
//
// Copyright 2013 Greg Ercolano.
// Copyright 1998-2016 by Bill Spitzak and others.
// Copyright 1998-2023 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
@ -19,6 +19,7 @@
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Tree.H>
#include <FL/Fl_Scheme_Choice.H>
#ifndef MAX
#define MAX(a,b) ((a)>(b))?(a):(b)
@ -77,9 +78,11 @@ public:
}
}
// Render the label
int dx = Fl::box_dx(prefs().selectbox()) + 1;
int dw = Fl::box_dw(prefs().selectbox()) + 2;
if ( render ) {
fl_color(fg);
if ( label() ) fl_draw(label(), X,Y,W,H, FL_ALIGN_LEFT);
if ( label() ) fl_draw(label(), X+dx, Y, W-dw, H, FL_ALIGN_LEFT);
}
int lw=0, lh=0;
if ( label() ) {
@ -117,12 +120,13 @@ void Timer_CB(void *data) {
}
int main(int argc, char *argv[]) {
Fl::scheme("gtk+");
Fl_Double_Window *win = new Fl_Double_Window(350, 400, "Tree Custom Draw Items");
Fl::scheme("gtk+"); // default scheme: can be overridden by commandline
Fl_Tree *tree = 0;
Fl_Double_Window *win = new Fl_Double_Window(350, 450, "Tree Custom Draw Items");
win->begin();
{
// Create the tree
Fl_Tree *tree = new Fl_Tree(0, 0, win->w(), win->h());
tree = new Fl_Tree(0, 0, win->w(), win->h() - 50);
tree->showroot(0); // don't show root of tree
tree->selectmode(FL_TREE_SELECT_MULTI); // multiselect
@ -166,11 +170,23 @@ int main(int argc, char *argv[]) {
// Start with some items closed
tree->close("Superjail");
// Optional: set a "special" selection color (light blue)
tree->selection_color(0xcceeff00);
// Optional: set a "special" box type for the selection box
tree->selectbox(FL_THIN_UP_BOX);
// Create the scheme choice box
new Fl_Scheme_Choice((win->w() - 130) / 2, win->h() - 40, 130, 30, "Scheme: ");
// Set up a timer to keep time in tree updated
Fl::add_timeout(0.2, Timer_CB, (void*)tree);
}
win->end();
win->resizable(win);
win->resizable(tree);
win->size_range(300, 350);
win->show(argc, argv);
return(Fl::run());
}