#define DVX_WIDGET_IMPL
// widgetStatusBar.c  -- StatusBar widget
//
// A horizontal container that draws a sunken border around each visible
// child to create the classic segmented status bar appearance. Children
// are typically labels or other simple widgets, laid out by the generic
// horizontal box layout. The status bar itself has no special layout
// logic -- it's a standard HBox with tight padding/spacing and the
// extra per-child sunken border decorations.
//
// The border drawing is done as an overlay on top of children rather
// than as part of the child's own paint, because it wraps around
// the child's allocated area (extending 1px past each edge). This
// keeps the sunken-panel effect consistent regardless of the child
// widget type.
//
// No mouse/key handlers -- the status bar is purely display. Children
// that are interactive (e.g., a clickable label) handle their own events.

#include "dvxWidgetPlugin.h"

#define TOOLBAR_PAD          2
#define TOOLBAR_GAP          2

static int32_t sTypeId = -1;


// ============================================================
// widgetStatusBarPaint
// ============================================================

// Draws a 1px sunken bevel (reversed highlight/shadow) around each
// child. The bevel.face=0 with width=1 means only the border lines
// are drawn, not a filled interior -- the child paints its own content.
void widgetStatusBarPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors) {
    (void)font;

    // Draw sunken border around each child
    for (WidgetT *c = w->firstChild; c; c = c->nextSibling) {
        if (!c->visible) {
            continue;
        }

        BevelStyleT bevel;
        bevel.highlight = colors->windowShadow;
        bevel.shadow    = colors->windowHighlight;
        bevel.face      = 0;
        bevel.width     = 1;
        drawBevel(d, ops, c->x - 1, c->y - 1, c->w + 2, c->h + 2, &bevel);
    }
}


// ============================================================
// widgetStatusBarGetLayoutMetrics
// ============================================================

void widgetStatusBarGetLayoutMetrics(const WidgetT *w, const BitmapFontT *font, int32_t *pad, int32_t *gap, int32_t *extraTop, int32_t *borderW) {
    (void)w;
    (void)font;
    *pad      = TOOLBAR_PAD;
    *gap      = TOOLBAR_GAP;
    *extraTop = 0;
    *borderW  = 0;
}


// ============================================================
// DXE registration
// ============================================================


static const WidgetClassT sClassStatusBar = {
    .version = WGT_CLASS_VERSION,
    .flags   = WCLASS_BOX_CONTAINER | WCLASS_HORIZ_CONTAINER,
    .handlers = {
        [WGT_METHOD_PAINT]              = (void *)widgetStatusBarPaint,
        [WGT_METHOD_GET_LAYOUT_METRICS] = (void *)widgetStatusBarGetLayoutMetrics,
    }
};

// ============================================================
// Widget creation functions
// ============================================================


WidgetT *wgtStatusBar(WidgetT *parent) {
    WidgetT *w = widgetAlloc(parent, sTypeId);

    if (w) {
        w->padding = wgtPixels(2);
        w->spacing = wgtPixels(2);
    }

    return w;
}


// ============================================================
// DXE registration
// ============================================================


static const struct {
    WidgetT *(*create)(WidgetT *parent);
} sApi = {
    .create = wgtStatusBar
};

static const WgtIfaceT sIface = {
    .basName     = "StatusBar",
    .props       = NULL,
    .propCount   = 0,
    .methods     = NULL,
    .methodCount = 0,
    .events      = NULL,
    .eventCount  = 0
};

void wgtRegister(void) {
    sTypeId = wgtRegisterClass(&sClassStatusBar);
    wgtRegisterApi("statusbar", &sApi);
    wgtRegisterIface("statusbar", &sIface);
}