diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/contrast.cxx | 74 |
1 files changed, 57 insertions, 17 deletions
diff --git a/test/contrast.cxx b/test/contrast.cxx index cdc131a82..11101f227 100644 --- a/test/contrast.cxx +++ b/test/contrast.cxx @@ -1,7 +1,7 @@ // // Contrast function test program for the Fast Light Tool Kit (FLTK). // -// Copyright 2022 by Bill Spitzak and others. +// Copyright 2022-2024 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 @@ -35,7 +35,7 @@ // program version -const char *version = "0.9.0"; +const char *version = "0.9.1"; // prototypes and forward declarations @@ -103,8 +103,8 @@ int g_selected = -1; // selected button: -1 = none, 0 - 255 = valid b Fl_Fontsize g_fs = 15; // fontsize for button labels int g_level = 0; // *init* fl_contrast_level (sensitivity) -int g_algo = FL_CONTRAST_LEGACY;// contrast algorithm: 0 = none, 1 = legacy (1.3.x), 2 = CIELAB, 3 = custom -const char *alch = ""; // algorithm as char: "LEGACY", "CIELAB" , or "CUSTOM" +int g_algo = FL_CONTRAST_CIELAB; // contrast algorithm: 0 = none, 1 = legacy (1.3.x), 2 = CIELAB, 3 = custom +const char *alch = ""; // algorithm as char: "LEGACY", "CIELAB" , or "CUSTOM" Fl_Color lcolor = FL_BLACK; // label color, set by slider callback Button *buttons[256]; // array of color buttons @@ -224,6 +224,38 @@ void slider_cb(Fl_Widget *w, void *v) { w->window()->redraw(); } + +// callback for the "random color" button + +void rc_cb(Fl_Widget *w, void *v) { + static bool first = true; + unsigned int r, g, b; + + if (first) { + // Seed the random number generator... + srand((unsigned int)time(NULL)); + first = false; + r = g = b = 0; // initialize with black + } else { + r = rand() % 256; + g = rand() % 256; + b = rand() % 256; + } + + sliders[1] -> value(r); + sliders[2] -> value(g); + sliders[3] -> value(b); + + // update button label colors + lcolor = fl_rgb_color(r, g, b); // set color value + update_labels(); + // output label color + char color_buf[10]; + sprintf(color_buf, "%02X %02X %02X", r, g, b); + color_out->value(color_buf); + w->window()->redraw(); +} + // callback for contrast algorithm (radio buttons) void algo_cb(Fl_Widget *w, void *v) { @@ -275,7 +307,7 @@ int main(int argc, char **argv) { int cw = 16 * bw + 10; int ch = 16 * bh + 10; int ww = cw + 10; - int wh = 16 * bh + 135 + 10 + 150 /* terminal */ + 10; + int wh = 16 * bh + 135 + 10 + 170 /* terminal */ + 10; Fl_Double_Window window(ww, wh, "fl_contrast test"); int n = 0; @@ -358,7 +390,7 @@ int main(int argc, char **argv) { Fl_Radio_Round_Button *aleg = new Fl_Radio_Round_Button(cgx, cgy + 25, cgw, abh, "LEGACY"); Fl_Radio_Round_Button *acie = new Fl_Radio_Round_Button(cgx, cgy + 50, cgw, abh, "CIELAB"); Fl_Radio_Round_Button *aapc = new Fl_Radio_Round_Button(cgx, cgy + 75, cgw, abh, "CUSTOM"); - aleg->value(1); + acie->value(1); anon->callback(algo_cb, (void *)0); aleg->callback(algo_cb, (void *)1); acie->callback(algo_cb, (void *)2); @@ -407,6 +439,12 @@ int main(int argc, char **argv) { lf->tooltip("Click to output a linefeed to the log."); lf->callback(lf_cb); + // random color (R) button + + Fl_Button *rc = new Fl_Button(10 + 8 * bw + lf->w() + 2, blue->y(), bw*3/4, sh, "&RC"); + rc->tooltip("Click to select a random text color."); + rc->callback(rc_cb); + // color chooser for field #255 int ccx = 10 + 12 * bw; @@ -421,7 +459,13 @@ int main(int argc, char **argv) { color_chooser->mode(1); // byte mode color_chooser->align(FL_ALIGN_LEFT_BOTTOM); - // simple terminal for output (FLTK 1.4 only) + // set contrast mode and level, update button label colors + + fl_contrast_mode(g_algo); + fl_contrast_function(custom_contrast); // dummy contrast function + algo_cb(acie, fl_voidptr(2)); + + // Fl_Terminal for output int ttx = 10; int tty = color_chooser->y() + cch + 10; @@ -433,22 +477,18 @@ int main(int argc, char **argv) { term->textfgcolor(FL_BLACK); term->textsize(13); - term->printf("FLTK fl_contrast() test program with different contrast algorithms, version %s\n", version); - term->printf("FLTK version %d.%d.%d\n", FL_MAJOR_VERSION, FL_MINOR_VERSION, FL_PATCH_VERSION); + term->printf("FLTK %d.%d.%d fl_contrast() test program with different contrast algorithms, version %s\n", + FL_MAJOR_VERSION, FL_MINOR_VERSION, FL_PATCH_VERSION, version); term->printf(" - Select a foreground (text) color with the gray or red/green/blue sliders (displayed inside each field).\n"); term->printf(" - Select an arbitrary background color for field #255 with the color chooser.\n"); term->printf(" - Select a colored field (by clicking on it) to display its attributes.\n"); term->printf(" - Select the contrast algorithm by clicking on the radio buttons.\n"); - term->printf(" - Tune the contrast algorithm with the light blue \"level\" slider (default: 50).\n"); - - // set contrast mode and level, update button label colors - - fl_contrast_mode(g_algo); - fl_contrast_function(custom_contrast); // dummy function - algo_cb(NULL, fl_voidptr(g_algo)); // updates button labels + term->printf(" - Tune the contrast algorithm with the light blue \"level\" slider (default: %d).\n", fl_contrast_level()); + term->printf(" - Select a random foreground (text) color by clicking the RC button\n"); - window.resizable(window); + window.resizable(term); window.end(); window.show(argc, argv); + rc_cb(rc, 0); // update button labels - must be called after show() return Fl::run(); } |