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294#ifndef NK_CONSOLE_ROW_H__
#define NK_CONSOLE_ROW_H__
typedef struct nk_console_row_data {
int activeChild;
nk_bool widgets_added; /** Indicates if all the row's widgets have been added. */
} nk_console_row_data;
#if defined(__cplusplus)
extern "C" {
#endif
/**
* Begin a new row in the console.
*
* @param parent The parent of which to create the new row.
* @return The new row.
*/
NK_API nk_console* nk_console_row_begin(nk_console* parent);
/**
* End the current row in the console.
*
* @param row The row to end.
*/
NK_API void nk_console_row_end(nk_console* row);
NK_API struct nk_rect nk_console_row_render(nk_console* console);
#if defined(__cplusplus)
}
#endif
#endif // NK_CONSOLE_ROW_H__
#if defined(NK_CONSOLE_IMPLEMENTATION) && !defined(NK_CONSOLE_HEADER_ONLY)
#ifndef NK_CONSOLE_ROW_IMPLEMENTATION_ONCE
#define NK_CONSOLE_ROW_IMPLEMENTATION_ONCE
#if defined(__cplusplus)
extern "C" {
#endif
static nk_console* nk_console_row_active_child(nk_console* row) {
if (row == NULL || row->data == NULL) {
return NULL;
}
int row_children_size = (int)cvector_size(row->children);
if (row_children_size == 0) {
return NULL;
}
nk_console_row_data* data = (nk_console_row_data*)row->data;
if (data->activeChild < 0) {
data->activeChild = 0;
}
else if (data->activeChild >= row_children_size) {
data->activeChild = row_children_size - 1;
}
return row->children[data->activeChild];
}
// Find the index of the next selectable child by either going right (direction
// = 1) or left (direction = -1). Returns the index of the currently active
// child if no other selectable child is found.
static int nk_console_row_next_selectable_child(nk_console* row, int direction) {
nk_console_row_data* data = (nk_console_row_data*)row->data;
int numChildren = (int)cvector_size(row->children);
for (int i = data->activeChild + direction; i >= 0 && i < numChildren; i += direction) {
if (row->children[i]->selectable) {
return i;
}
}
return data->activeChild;
}
/**
* Pick the nearest selectable child to the currently active child.
*
* @param row The row to pick the nearest selectable child from.
* @return True or false if a new selectable child was found.
*/
static nk_bool nk_console_row_pick_nearest_selectable_child(nk_console* row) {
// Ensure there is actually a possible active child.
if (row == NULL || row->data == NULL || nk_console_row_active_child(row) == NULL) {
return nk_false;
}
nk_console_row_data* data = (nk_console_row_data*)row->data;
int amount = (int)cvector_size(row->children);
for (int i = 1; i < amount; ++i) {
if (data->activeChild + i < amount && row->children[data->activeChild + i]->selectable) {
data->activeChild += i;
return nk_true;
}
if (data->activeChild - i >= 0 && row->children[data->activeChild - i]->selectable) {
data->activeChild -= i;
return nk_true;
}
}
return nk_false;
}
NK_API nk_console* nk_console_row_begin(nk_console* parent) {
// Create the row data.
nk_console_row_data* data = (nk_console_row_data*)NK_CONSOLE_MALLOC(nk_handle_id(0), NULL, sizeof(nk_console_row_data));
nk_zero(data, sizeof(nk_console_row_data));
// Create the row.
nk_console* row = nk_console_label(parent, NULL);
row->data = data;
row->alignment = NK_TEXT_ALIGN_CENTERED;
row->type = NK_CONSOLE_ROW;
row->render = nk_console_row_render;
row->columns = 0;
row->selectable = nk_false;
return row;
}
NK_API void nk_console_row_end(nk_console* row) {
// Make sure there is a row to end that has available children.
nk_console* active_child = nk_console_row_active_child(row);
if (active_child == NULL) {
return;
}
// Set up the row data based on the available children.
row->columns = 0;
row->selectable = nk_false;
row->height = 0;
int numChildren = (int)cvector_size(row->children);
for (int i = 0; i < numChildren; ++i) {
nk_console* child = row->children[i];
// This row is selectable if there's at least one selectable child.
row->selectable |= child->selectable;
// The row's height is taken from the tallest child.
if (child->height > row->height) {
row->height = child->height;
}
// Calculate the maximum amount of columns that are in the row
row->columns += child->columns;
}
// Make sure we start on a selectable child by default.
if (!active_child->selectable) {
nk_console_row_pick_nearest_selectable_child(row);
}
nk_console_row_data* data = (nk_console_row_data*)row->data;
data->widgets_added = nk_true;
}
static void nk_console_row_check_left_right(nk_console* row, nk_console* top) {
nk_console_row_data* data = (nk_console_row_data*)row->data;
nk_console_top_data* top_data = (nk_console_top_data*)top->data;
if (top_data->input_processed) {
return;
}
// Left
if (nk_console_button_pushed(top, NK_GAMEPAD_BUTTON_LEFT)) {
data->activeChild = nk_console_row_next_selectable_child(row, -1);
top_data->input_processed = nk_true;
}
// Right
else if (nk_console_button_pushed(top, NK_GAMEPAD_BUTTON_RIGHT)) {
data->activeChild = nk_console_row_next_selectable_child(row, 1);
top_data->input_processed = nk_true;
}
}
NK_API struct nk_rect nk_console_row_render(nk_console* console) {
if (console == NULL || console->data == NULL) {
return nk_rect(0, 0, 0, 0);
}
nk_console_row_data* data = (nk_console_row_data*)console->data;
nk_console* top = nk_console_get_top(console);
nk_console_top_data* top_data = (nk_console_top_data*)top->data;
// Rows use the advanced layout system to render their children.
nk_layout_row_begin(console->ctx, NK_DYNAMIC, (float)console->height, console->columns);
struct nk_rect widget_bounds = nk_layout_widget_bounds(console->ctx);
// Consume mouse movement before children have a chance to.
int numChildren = (int)cvector_size(console->children);
struct nk_input* input = &console->ctx->input;
if (console->selectable && top_data->input_processed == nk_false &&
widget_bounds.w > 0 && nk_input_is_mouse_moved(input) &&
nk_input_is_mouse_hovering_rect(input, widget_bounds)) {
// First, make sure that the active widget is the row.
nk_console_set_active_widget(console);
// Find the child that the mouse is hovering over.
if (console->columns > 0) {
float x_percent = (input->mouse.pos.x - widget_bounds.x) / widget_bounds.w;
float column_width_percent = 0.0f;
for (int i = 0; i < numChildren; i++) {
int widget_columns = console->children[i]->columns;
if (widget_columns <= 0) {
widget_columns = 1;
}
column_width_percent += (float)widget_columns / (float)console->columns;
if (x_percent < column_width_percent) {
data->activeChild = i;
break;
}
}
}
// Ensure the new active child is actually selectable.
if (!nk_console_row_active_child(console)->selectable) {
nk_console_row_pick_nearest_selectable_child(console);
}
}
// Consume directional input before children have a chance to.
if (nk_console_is_active_widget(console)) {
nk_console_row_check_left_right(console, top);
nk_console_check_up_down(console, widget_bounds);
nk_console* active = nk_console_get_active_widget(console);
// Attempt to accurately move vertically if the new widget is also a row.
if (active != NULL && active != console && active->type == NK_CONSOLE_ROW && active->data != NULL) {
nk_console_row_data* active_data = (nk_console_row_data*)active->data;
// Find the desired destination based on the current row child widths.
float desired_destination_percent = 0.0f;
for (int i = 0; i < data->activeChild; i++) {
desired_destination_percent += (float)console->children[i]->columns / (float)console->columns;
}
// Determine the new active child based on the desired destination percent.
float x = 0.0f;
int active_children_size = (int)cvector_size(active->children);
for (active_data->activeChild = 0; active_data->activeChild < active_children_size; active_data->activeChild++) {
x += (float)active->children[active_data->activeChild]->columns / (float)active->columns;
if (x > desired_destination_percent) {
break;
}
}
// Ensure we switched to a selectable child.
nk_console* new_active_child = nk_console_row_active_child(active);
if (new_active_child != NULL && !new_active_child->selectable) {
nk_console_row_pick_nearest_selectable_child(active);
}
}
}
// Set the active widget to the active child of the row.
if (!console->disabled && nk_console_is_active_widget(console) && numChildren > 0) {
console->activeWidget = nk_console_row_active_child(console);
}
// Render all the children
for (int i = 0; i < numChildren; ++i) {
nk_console* child = console->children[i];
if (child->render != NULL && child->visible == nk_true) {
// If the row is disabled, then temporarily disable the child when rendering.
if (console->disabled) {
nk_bool child_disabled = child->disabled;
child->disabled = nk_true;
child->render(child);
child->disabled = child_disabled;
}
else {
child->render(child);
}
}
}
console->activeWidget = NULL;
// Finished rendering the row, so complete the row layout.
nk_layout_row_end(console->ctx);
return widget_bounds;
}
#if defined(__cplusplus)
}
#endif
#endif // NK_CONSOLE_ROW_IMPLEMENTATION_ONCE
#endif // NK_CONSOLE_IMPLEMENTATION