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Improve test/color_chooser layout, fix some small bugs.

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Added a "hint" to tell the user what the buttons are good for.
The hint also exercises fl_contrast(). Whenever the background color
is changed the hint's labelcolor is set with fl_contrast().


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10694 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Albrecht Schlosser
2015-04-09 20:10:25 +00:00
parent 130bbf6efa
commit bd8ab76cb0
1 changed files with 14 additions and 8 deletions
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test/color_chooser.cxx
+14 -8
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@@ -32,9 +32,10 @@
#include "list_visuals.cxx"
#endif
int width = 75;
int height = 75;
int width = 100;
int height = 100;
uchar *image;
Fl_Box *hint;
void make_image() {
image = new uchar[3*width*height];
@@ -71,6 +72,7 @@ void cb1(Fl_Widget *, void *v) {
c = fl_show_colormap(c);
Fl_Box* b = (Fl_Box*)v;
b->color(c);
hint->labelcolor(fl_contrast(FL_BLACK,c));
b->parent()->redraw();
}
@@ -82,25 +84,29 @@ void cb2(Fl_Widget *, void *v) {
Fl::set_color(fullcolor_cell,r,g,b);
Fl_Box* bx = (Fl_Box*)v;
bx->color(fullcolor_cell);
hint->labelcolor(fl_contrast(FL_BLACK,fullcolor_cell));
bx->parent()->redraw();
}
int main(int argc, char ** argv) {
Fl::set_color(fullcolor_cell,145,159,170);
Fl_Window window(400,400);
Fl_Box box(50,50,300,300);
Fl_Box box(30,30,340,340);
box.box(FL_THIN_DOWN_BOX);
c = fullcolor_cell;
box.color(c);
Fl_Button b1(140,120,120,30,"fl_show_colormap");
Fl_Box hintbox(40,40,320,30,"Pick background color with buttons:");
hintbox.align(FL_ALIGN_INSIDE);
hint = &hintbox;
Fl_Button b1(120,80,180,30,"fl_show_colormap()");
b1.callback(cb1,&box);
Fl_Button b2(140,160,120,30,"fl_choose_color");
Fl_Button b2(120,120,180,30,"fl_color_chooser()");
b2.callback(cb2,&box);
Fl_Box image_box(140,200,120,120,0);
Fl_Box image_box(160,190,width,height,0);
make_image();
(new Fl_RGB_Image(image, width, height))->label(&image_box);
Fl_Box b(140,320,120,0,"Example of fl_draw_image()");
Pens p(80,200,3*8,120,"lines");
Fl_Box b(160,310,120,30,"Example of fl_draw_image()");
Pens p(60,180,3*8,120,"lines");
p.align(FL_ALIGN_TOP);
int i = 1;
if (!Fl::args(argc,argv,i) || i < argc-1) {