nuklear_console/nuklear_console_progress.h at master · RobLoach/nuklear_console · GitHub

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#ifndef NK_CONSOLE_PROGRESS_H__
#define NK_CONSOLE_PROGRESS_H__

typedef struct nk_console_progress_data {
    nk_size max_size;
    nk_size* value_size;
} nk_console_progress_data;

#if defined(__cplusplus)
extern "C" {
#endif

NK_API nk_console* nk_console_progress(nk_console* parent, const char* text, nk_size* current, nk_size max);
NK_API void nk_console_progress_update(nk_console* progress, const char* label, nk_size* current, nk_size max);
NK_API struct nk_rect nk_console_progress_render(nk_console* console);

#if defined(__cplusplus)
}
#endif

#endif // NK_CONSOLE_PROGRESS_H__

#if defined(NK_CONSOLE_IMPLEMENTATION) && !defined(NK_CONSOLE_HEADER_ONLY)
#ifndef NK_CONSOLE_PROGRESS_IMPLEMENTATION_ONCE
#define NK_CONSOLE_PROGRESS_IMPLEMENTATION_ONCE

#if defined(__cplusplus)
extern "C" {
#endif

NK_API nk_console* nk_console_progress(nk_console* parent, const char* text, nk_size* current, nk_size max) {
    NK_ASSERT(current != NULL);
    NK_ASSERT(max > 0);

    // Create the widget data.
    nk_console_progress_data* data = (nk_console_progress_data*)NK_CONSOLE_MALLOC(nk_handle_id(0), NULL, sizeof(nk_console_progress_data));
    nk_zero(data, sizeof(nk_console_progress_data));

    nk_console* progress = nk_console_label(parent, text);
    progress->render = nk_console_progress_render;
    progress->type = NK_CONSOLE_PROGRESS;
    progress->selectable = nk_true;
    data->value_size = current;
    data->max_size = max;
    progress->columns = text != NULL ? 2 : 1;
    progress->data = (void*)data;
    if (*current > max) {
        *current = max;
    }
    return progress;
}

NK_API void nk_console_progress_update(nk_console* progress, const char* label, nk_size* current, nk_size max) {
    if (!progress || !progress->data) return;
    nk_console_progress_data* data = (nk_console_progress_data*)progress->data;

    progress->label = label;
    progress->label_length = nk_strlen(label);
    progress->columns = label != NULL ? 2 : 1;
    data->value_size = current;
    data->max_size = max;

    if (current != NULL && *current > max) {
        *current = max;
    }
}

NK_API struct nk_rect nk_console_progress_render(nk_console* console) {
    nk_console_progress_data* data = (nk_console_progress_data*)console->data;
    if (data == NULL) {
        return nk_rect(0, 0, 0, 0);
    }

    nk_console_layout_widget(console);

    nk_console* top = nk_console_get_top(console);

    // Allow changing the value.
    nk_bool active = nk_false;
    if (!console->disabled && nk_console_is_active_widget(console)) {
        nk_console_top_data* top_data = (nk_console_top_data*)top->data;
        if (!top_data->input_processed) {
            if (nk_console_button_pushed(top, NK_GAMEPAD_BUTTON_LEFT)) {
                if (data->value_size != NULL && *data->value_size > 0) {
                    *data->value_size = *data->value_size - 1;
                    nk_console_trigger_event(console, NK_CONSOLE_EVENT_CHANGED);
                }
                active = nk_true;
                top_data->input_processed = nk_true;
            }
            else if (nk_console_button_pushed(top, NK_GAMEPAD_BUTTON_RIGHT)) {
                if (data->value_size != NULL && *data->value_size < data->max_size) {
                    *data->value_size = *data->value_size + 1;
                    nk_console_trigger_event(console, NK_CONSOLE_EVENT_CHANGED);
                }
                active = nk_true;
                top_data->input_processed = nk_true;
            }
        }
    }

    // Display the label
    if (nk_strlen(console->label) > 0) {
        if (!nk_console_is_active_widget(console)) {
            nk_widget_disable_begin(console->ctx);
        }
        nk_label(console->ctx, console->label, NK_TEXT_LEFT);
        if (!nk_console_is_active_widget(console)) {
            nk_widget_disable_end(console->ctx);
        }
    }

    struct nk_rect widget_bounds = nk_layout_widget_bounds(console->ctx);

    if (console->disabled) {
        nk_widget_disable_begin(console->ctx);
    }

    // Progress
    struct nk_style_item cursor_normal = console->ctx->style.progress.cursor_normal;
    struct nk_style_item cursor_hover = console->ctx->style.progress.cursor_hover;
    struct nk_style_item cursor_active = console->ctx->style.progress.cursor_active;
    if (nk_console_is_active_widget(console)) {
        if (active) {
            console->ctx->style.progress.cursor_normal = cursor_active;
        }
        else {
            console->ctx->style.progress.cursor_normal = cursor_hover;
        }
    }

    // Display the widget
    if (nk_progress(console->ctx, data->value_size, data->max_size, nk_true)) {
        nk_console_trigger_event(console, NK_CONSOLE_EVENT_CHANGED);
    }

    // Restore the styles
    console->ctx->style.progress.cursor_normal = cursor_normal;
    console->ctx->style.progress.cursor_hover = cursor_hover;
    console->ctx->style.progress.cursor_active = cursor_active;

    if (console->disabled) {
        nk_widget_disable_end(console->ctx);
    }

    // Allow switching up/down in widgets
    if (nk_console_is_active_widget(console)) {
        nk_console_check_up_down(console);
        nk_console_check_tooltip(console);
    }

    return widget_bounds;
}

#if defined(__cplusplus)
}
#endif

#endif // NK_CONSOLE_PROGRESS_IMPLEMENTATION_ONCE
#endif // NK_CONSOLE_IMPLEMENTATION