Widget-state persistence round-trip for n_gui_save/load_layout_json: a keyed splitpane's ratio and a keyed datagrid's column layout survive a save + reload into a fresh context, including the lazily-created-widget path (n_gui_widget_set_persist_key applies the pending state).
Widget-state persistence round-trip for n_gui_save/load_layout_json: a keyed splitpane's ratio and a keyed datagrid's column layout survive a save + reload into a fresh context, including the lazily-created-widget path (n_gui_widget_set_persist_key applies the pending state). Headless.
#define ALLEGRO_UNSTABLE 1
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
if (!cond) {
}
}
static int feq(
float a,
float b) {
return fabsf(a - b) < 0.01f;
}
}
int main(
int argc,
char** argv) {
(void)argc;
(void)argv;
if (!al_init() || !al_init_font_addon()) {
return 1;
}
ALLEGRO_FONT* font = al_create_builtin_font();
if (!font) {
return 1;
}
char path[128];
snprintf(path, sizeof(path), "ex_gui_layout_persist_%d.json", (int)getpid());
int sp_id = -1, dg_id = -1;
{
}
{
}
{
}
unlink(path);
al_destroy_font(font);
printf(
"ex_gui_layout_persist: %d FAILURE(S)\n",
failures);
return 1;
}
printf("ex_gui_layout_persist: all checks passed\n");
return 0;
}
static void expect_true(const char *label, int cond)
static int feq(float a, float b)
static void build_window(N_GUI_CTX *gui)
float x
position x on screen
float y
position y on screen
void n_gui_set_display_size(N_GUI_CTX *ctx, float w, float h)
Set the display (viewport) size for global scrollbar computation.
float n_gui_splitpane_get_ratio(N_GUI_CTX *ctx, int widget_id)
get the current divider ratio of a split pane
int n_gui_save_layout_json(N_GUI_CTX *ctx, const char *filepath)
save the geometry + persistent state of every window to a JSON file
void n_gui_minimize_window(N_GUI_CTX *ctx, int window_id)
Minimise a window (show title bar only)
#define N_GUI_SPLIT_HORIZONTAL
split pane: horizontal divider, regions are top and bottom
int n_gui_add_splitpane(N_GUI_CTX *ctx, int window_id, float x, float y, float w, float h, int orientation, float ratio, void(*on_change)(int, float, void *), void *user_data)
Add a split pane widget: a draggable divider between two regions.
const char * n_gui_widget_get_persist_key(N_GUI_CTX *ctx, int widget_id)
Get a widget's persist key ("" when unset), or NULL when the widget is invalid.
int n_gui_datagrid_add_column(N_GUI_CTX *ctx, int widget_id, const char *title, float width)
append a column with a header title and pixel width; returns the column index or -1
void n_gui_widget_set_persist_key(N_GUI_CTX *ctx, int widget_id, const char *key)
Give a widget a stable key so its user-adjustable state (a splitpane's divider ratio,...
void n_gui_datagrid_move_column(N_GUI_CTX *ctx, int widget_id, int from, int to)
move the column at display position from to display position to, shifting the columns in between (reo...
N_GUI_WINDOW * n_gui_get_window(N_GUI_CTX *ctx, int window_id)
Get a window pointer by id.
int n_gui_add_window(N_GUI_CTX *ctx, const char *title, float x, float y, float w, float h)
Add a new pseudo-window to the context.
N_GUI_CTX * n_gui_new_ctx(ALLEGRO_FONT *default_font)
Create a new GUI context.
int n_gui_datagrid_display_to_physical(N_GUI_CTX *ctx, int widget_id, int display_pos)
physical column shown at display position display_pos, or -1 if out of range
float n_gui_datagrid_get_column_width(N_GUI_CTX *ctx, int widget_id, int col)
current pixel width of physical column col, or 0 if out of range
#define N_GUI_SPLIT_VERTICAL
split pane: vertical divider, regions are left and right
void n_gui_destroy_ctx(N_GUI_CTX **ctx)
Destroy a GUI context and all its windows/widgets.
int n_gui_window_is_minimised(N_GUI_CTX *ctx, int window_id)
Check if a window is currently minimised.
void n_gui_restore_window(N_GUI_CTX *ctx, int window_id)
Restore a minimised window to its full size.
void n_gui_open_window(N_GUI_CTX *ctx, int window_id)
Open (show) a window.
void n_gui_splitpane_set_ratio(N_GUI_CTX *ctx, int widget_id, float ratio)
set the divider ratio of a split pane (clamped to its min/max)
int n_gui_load_layout_json(N_GUI_CTX *ctx, const char *filepath)
load a JSON window layout file and apply it to matching windows
void n_gui_datagrid_set_column_width(N_GUI_CTX *ctx, int widget_id, int col, float width)
set the pixel width of physical column col (clamped to a small minimum)
void n_gui_datagrid_set_column_visible(N_GUI_CTX *ctx, int widget_id, int col, int visible)
show (1) or hide (0) physical column col; hidden columns keep their cells but are skipped in the head...
int n_gui_datagrid_get_column_visible(N_GUI_CTX *ctx, int widget_id, int col)
whether physical column col is visible (1) or hidden (0); 0 if out of range
int n_gui_add_datagrid(N_GUI_CTX *ctx, int window_id, float x, float y, float w, float h, void(*on_select)(int, int, void *), void *user_data)
Add a sortable data grid widget.
The top-level GUI context that holds all windows.
A pseudo window that contains widgets.
#define n_log(__LEVEL__,...)
Logging function wrapper to get line and func.
#define LOG_ERR
error conditions
void set_log_level(const int log_level)
Set the global log level value ( static int LOG_LEVEL )
Common headers and low-level functions & define.
GUI system: buttons, sliders, text areas, checkboxes, scrollbars, dropdown menus, windows.
1.9.8