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Fixes #297 - improvements for icon.cxx + icon() docs

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This commit is contained in:
Greg Ercolano
2021-11-26 13:13:58 -08:00
parent 6fc5c16e1c
commit 84c09ae7b2
2 changed files with 20 additions and 7 deletions
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src/Fl_Window.cxx
+3
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@@ -333,6 +333,9 @@ void Fl_Window::default_icons(const Fl_RGB_Image *icons[], int count) {
default window icon (see links below) or the system default icon will default window icon (see links below) or the system default icon will
be used. be used.
This method makes an internal copy of the \p icon pixel buffer,
so once set, the Fl_RGB_Image instance can be freed by the caller.
\param[in] icon icon for this window, NULL to reset window icon. \param[in] icon icon for this window, NULL to reset window icon.
\see Fl_Window::default_icon(const Fl_RGB_Image *) \see Fl_Window::default_icon(const Fl_RGB_Image *)
test/icon.cxx
+17 -7
View File
@@ -1,5 +1,5 @@
// //
// Icon test program for the Fast Light Tool Kit (FLTK). // Window icon test program for the Fast Light Tool Kit (FLTK).
// //
// Copyright 1998-2021 by Bill Spitzak and others. // Copyright 1998-2021 by Bill Spitzak and others.
// //
@@ -23,13 +23,20 @@ static Fl_Double_Window *win;
void choice_cb(Fl_Widget *, void *v) { void choice_cb(Fl_Widget *, void *v) {
Fl_Color c = (Fl_Color)fl_uint(v); Fl_Color c = (Fl_Color)fl_uint(v);
static uchar buffer[32*32*3]; // static: issue #296 if ( c != 0 ) {
Fl_RGB_Image icon(buffer, 32, 32, 3); // choice was "Red", "Green"..
icon.color_average(c, 0.0); static uchar buffer[32*32*3]; // static: issue #296
win->icon(&icon); Fl_RGB_Image rgbicon(buffer, 32, 32, 3);
rgbicon.color_average(c, 0.0);
win->icon(&rgbicon); // once assigned, 'rgbicon' can go out of scope
} else {
// choice was "None"..
win->icon((Fl_RGB_Image*)0); // reset window icon
}
} }
Fl_Menu_Item choices[] = { Fl_Menu_Item choices[] = {
{"None", 0, choice_cb, fl_voidptr(0)},
{"Red", 0, choice_cb, fl_voidptr(FL_RED)}, {"Red", 0, choice_cb, fl_voidptr(FL_RED)},
{"Green", 0, choice_cb, fl_voidptr(FL_GREEN)}, {"Green", 0, choice_cb, fl_voidptr(FL_GREEN)},
{"Blue", 0, choice_cb, fl_voidptr(FL_BLUE)}, {"Blue", 0, choice_cb, fl_voidptr(FL_BLUE)},
@@ -37,15 +44,18 @@ Fl_Menu_Item choices[] = {
}; };
int main(int argc, char **argv) { int main(int argc, char **argv) {
Fl_Double_Window window(400,300); Fl_Double_Window window(400,300, "FLTK Window Icon Test");
win = &window; win = &window;
Fl_Choice choice(80,100,200,25,"Colour:"); Fl_Choice choice(120,100,200,25,"Window icon:");
choice.menu(choices); choice.menu(choices);
choice.callback(choice_cb); choice.callback(choice_cb);
choice.when(FL_WHEN_RELEASE|FL_WHEN_NOT_CHANGED); choice.when(FL_WHEN_RELEASE|FL_WHEN_NOT_CHANGED);
choice.tooltip("Sets the application icon for window manager. "
"Affects e.g. titlebar, toolbar, Dock, Alt-Tab..");
window.end(); window.end();
window.show(argc,argv); window.show(argc,argv);
choice.do_callback(); // make default take effect
return Fl::run(); return Fl::run();
} }