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Diffstat (limited to 'test/grid_alignment.cxx')
| -rw-r--r-- | test/grid_alignment.cxx | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/test/grid_alignment.cxx b/test/grid_alignment.cxx new file mode 100644 index 000000000..59a5368c3 --- /dev/null +++ b/test/grid_alignment.cxx @@ -0,0 +1,203 @@ +// +// Fl_Grid demo program for the Fast Light Tool Kit (FLTK). +// +// Copyright 2021 by Albrecht Schlosser +// Copyright 2022-2023 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 +// file is missing or damaged, see the license at: +// +// https://www.fltk.org/COPYING.php +// +// Please see the following page on how to report bugs and issues: +// +// https://www.fltk.org/bugs.php +// + +// +// This program tests several different alignment features of Fl_Grid. +// + +#include <FL/Fl.H> +#include <FL/Fl_Double_Window.H> +#include <FL/Fl_Grid.H> +#include <FL/Fl_Button.H> +#include <FL/Fl_Input.H> +#include <FL/Fl_Box.H> + +// Test function to change the layout (executed by timer callback) + +#define TEST_RELAYOUT (0) +#define TEST_REMOVE_NOTIFY (0) + +#if (TEST_RELAYOUT) +void relayout_cb(void *v) { + Fl_Grid *grid = (Fl_Grid *)v; + grid->layout(5, 5, 8, 4); + grid->margin(10, 20, 30, 40); + grid->layout(); + grid->redraw(); +} +#endif + +#if TEST_REMOVE_NOTIFY + +void remove_cb(void *v) { + static int n = 10; + n--; + Fl_Grid *grid = (Fl_Grid *)v; +#if (0) // test 1: remove() the widget -- leaks memory (!) + grid->remove(n); +#else // test 2: delete the widget -- no leak + delete grid->child(0); +#endif + if (n > 0) + Fl::repeat_timeout(0.3, remove_cb, v); +} + +#endif + +int main(int argc, char **argv) { + Fl_Grid::Cell *c; + Fl_Box *b; + Fl_Double_Window *win = new Fl_Double_Window(440, 350, "FLTK 1.4.0 - Fl_Grid Alignment Test"); + Fl_Grid *grid = new Fl_Grid(10, 10, 420, 330); + grid->layout(7, 7, 8, 4); // cols, rows, margin, gap + grid->box(FL_FLAT_BOX); + grid->color(FL_WHITE); + + // add boxes (top and bottom rows) + + for (int col = 0; col < 7; col++) { + grid->col_width(col, 50); + b = new Fl_Box(0, 0, 20, 20); // variable size + if (col == 5) { + b->size(4, 20); // reduce width + grid->col_width(col, 4); // new min. width + grid->col_weight(col, 0); // no hor. resizing + } + b->box(FL_FLAT_BOX); + b->color(FL_BLUE); + grid->widget(b, 0, col); + + if (col == 5) + b = new Fl_Box(0, 0, 4, 20); // variable size + else + b = new Fl_Box(0, 0, 20, 20); // variable size + b->box(FL_FLAT_BOX); + b->color(FL_RED); + grid->widget(b, 6, col); + } + + // add boxes (left and right columns) + + grid->row_height(0, 40); + grid->row_height(6, 40); + + for (int row = 1; row < 6; row++) { + grid->row_height(row, 40); + b = new Fl_Box(0, 0, 20, 20); // fixed size, see alignment below + b->box(FL_FLAT_BOX); + b->color(FL_RED); + switch(row) { + case 1: grid->widget(b, row, 0, FL_GRID_FILL); break; + case 2: grid->widget(b, row, 0, FL_ALIGN_CENTER); break; + case 3: grid->widget(b, row, 0, FL_ALIGN_BOTTOM_RIGHT); break; + case 4: grid->widget(b, row, 0, FL_ALIGN_BOTTOM_RIGHT); break; + case 5: grid->widget(b, row, 0, FL_ALIGN_TOP_RIGHT); break; + default: break; + } + + b = new Fl_Box(0, 0, 20, 20); + b->box(FL_FLAT_BOX); + b->color(FL_GREEN); + c = grid->widget(b, row, 6, FL_ALIGN_CENTER); + } + + // two more boxes to demonstrate widget alignment inside the cell + + for (int row = 4; row < 6; row++) { + b = new Fl_Box(0, 0, 20, 20); // fixed size, see alignment below + b->box(FL_FLAT_BOX); + b->color(FL_MAGENTA); + c = grid->widget(b, row, 1); // default alignment: FL_GRID_FILL + if (row == 4) + c->align(FL_ALIGN_BOTTOM_LEFT); // alignment uses widget size + if (row == 5) + c->align(FL_ALIGN_TOP_LEFT); // alignment uses widget size + } + + // one vertical box (line), spanning 5 rows + + b = new Fl_Box(0, 0, 2, 2); // extends vertically + b->box(FL_FLAT_BOX); + b->color(FL_BLACK); + grid->widget(b, 1, 5, 5, 1, FL_GRID_VERTICAL | FL_ALIGN_RIGHT); + + // add a textbox with label or title, spanning 5 cells, centered + + b = new Fl_Box(0, 0, 1, 1); // variable size + b->label("Hello, Fl_Grid !"); + b->labelfont(FL_BOLD + FL_ITALIC); + b->labelsize(30); + b->labeltype(FL_SHADOW_LABEL); + grid->widget(b, 1, 1, 1, 5); // rowspan = 1, colspan = 5 + + // add a footer textbox, spanning 3 cells, right aligned + + b = new Fl_Box(0, 0, 1, 10); // variable size + b->label("FLTK/test/grid_alignment.cxx"); + b->labelfont(FL_COURIER); + b->labelsize(11); + b->align(FL_ALIGN_INSIDE | FL_ALIGN_RIGHT); + grid->widget(b, 5, 2, 1, 3, FL_GRID_HORIZONTAL | FL_ALIGN_BOTTOM); + + // input widgets with fixed size and alignment inside the cell + + Fl_Input *i1 = new Fl_Input(0, 0, 100, 30, "Username:"); + c = grid->widget(i1, 2, 3, 1, 2); // widget, col, row, colspan, rowspan + c->align(FL_GRID_HORIZONTAL); // widget alignment in cell + + Fl_Input *i2 = new Fl_Input(0, 0, 100, 30, "Password:"); + c = grid->widget(i2, 3, 3, 1, 2); // widget, col, row, colspan, rowspan + c->align(FL_GRID_HORIZONTAL); // widget alignment in cell + + // the login button spans 2 columns + + Fl_Button *bt = new Fl_Button(0, 0, 10, 30, "Login"); + grid->widget(bt, 4, 3, 1, 2, FL_GRID_HORIZONTAL); // widget, col, row, colspan, rowspan, alignment + + grid->row_weight(1, 90); + grid->row_weight(2, 0); + grid->row_weight(3, 0); + grid->row_weight(4, 0); + + grid->col_weight(0, 30); + grid->col_weight(4, 90); + + grid->row_gap(5, 12); + + grid->end(); + grid->layout(); + grid->debug(0); + // grid->show_grid(1); // enable to display grid helper lines + win->end(); + win->resizable(grid); + win->size_range(440, 350); + win->show(argc, argv); + +#if (TEST_RELAYOUT) + Fl::add_timeout(5.0, relayout_cb, grid); +#endif + +#if (TEST_REMOVE_NOTIFY) + Fl::add_timeout(3.0, remove_cb, grid); +#endif + + // return Fl::run(); + int ret = Fl::run(); + grid->clear_layout(); + delete win; + return ret; +} |