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Somewhat better example for dynamic tooltip.

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This commit is contained in:
Matthias Melcher 2025-03-30 00:25:18 +01:00
parent 61c2b798be
commit b2b5e47ede
1 changed files with 17 additions and 9 deletions
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26
test/color_chooser.cxx
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@ -85,16 +85,24 @@ void cb2(Fl_Widget *, void *v) {
bx->parent()->redraw();
}
class Image_Box: public Fl_Box {
class Sample_Box: public Fl_Box {
public:
Image_Box(int x, int y, int w, int h, const char *label = nullptr)
Sample_Box(int x, int y, int w, int h, const char *label = nullptr)
: Fl_Box(x, y, w, h, label) { }
int handle(int event) override {
if (event == FL_BEFORE_TOOLTIP) {
const char *color_name_lut[] = { "blue", "green", "black", "red" };
int quadrant = (Fl::event_x() < x()+w()/2) + 2*(Fl::event_y() < y()+h()/2);
char buf[80];
::snprintf(buf, 79, "Color %s at x=%d, y=%d", color_name_lut[quadrant], Fl::event_x(), Fl::event_y());
char buf[128];
uchar r, g, b;
Fl::get_color(color(), r, g, b);
if ((color()&255) && (color()!=16)) {
::snprintf(buf, 127,
"Background color is:\n"
"palette no. %d = r:%d, g:%d, b:%d", color(), r, g, b);
} else {
::snprintf(buf, 127,
"Background color is:\n"
"r:%d, g:%d, b:%d", r, g, b);
}
return Fl_Tooltip::override_text(buf);
}
return Fl_Box::handle(event);
@ -104,7 +112,8 @@ public:
int main(int argc, char ** argv) {
Fl::set_color(fullcolor_cell,145,159,170);
Fl_Window window(400,400);
Fl_Box box(30,30,340,340);
Sample_Box box(30,30,340,340);
box.tooltip("Show RGB values");
box.box(FL_THIN_DOWN_BOX);
c = fullcolor_cell;
box.color(c);
@ -115,8 +124,7 @@ int main(int argc, char ** argv) {
b1.callback(cb1,&box);
Fl_Button b2(120,120,180,30,"fl_color_chooser()");
b2.callback(cb2,&box);
Image_Box image_box(160,190,width,height,0);
image_box.tooltip("Image Box");
Fl_Box image_box(160,190,width,height,0);
make_image();
(new Fl_RGB_Image(image, width, height))->label(&image_box);
Fl_Box b(160,310,120,30,"Example of fl_draw_image()");