// widgetLabel.c  -- Label widget
//
// Static text display  -- the simplest widget. Not focusable, not interactive.
// Supports accelerator keys via '&' prefix: when the user presses Alt+key,
// focus moves to the next focusable widget after this label. This follows
// the Win3.1 convention where labels act as keyboard shortcuts for adjacent
// controls (e.g., a label "&Name:" before a text input).
//
// The text pointer is stored directly (not copied)  -- the caller must ensure
// the string remains valid for the widget's lifetime, or use widgetLabelSetText
// to update it. This avoids unnecessary allocations for the common case of
// literal string labels.
//
// Background is transparent by default (bgColor == 0 means use the parent's
// content background color from the color scheme). The +1 in calcMinH adds a
// pixel of breathing room below the text baseline.

#include "widgetInternal.h"


// ============================================================
// wgtLabel
// ============================================================

WidgetT *wgtLabel(WidgetT *parent, const char *text) {
    WidgetT *w = widgetAlloc(parent, WidgetLabelE);

    if (w) {
        w->as.label.text = text;
        w->accelKey      = accelParse(text);
    }

    return w;
}


// ============================================================
// widgetLabelGetText
// ============================================================

const char *widgetLabelGetText(const WidgetT *w) {
    return w->as.label.text;
}


// ============================================================
// widgetLabelSetText
// ============================================================

void widgetLabelSetText(WidgetT *w, const char *text) {
    w->as.label.text = text;
    w->accelKey = accelParse(text);
}


// ============================================================
// widgetLabelCalcMinSize
// ============================================================

void widgetLabelCalcMinSize(WidgetT *w, const BitmapFontT *font) {
    w->calcMinW = textWidthAccel(font, w->as.label.text);
    w->calcMinH = font->charHeight + 1;
}


// ============================================================
// widgetLabelPaint
// ============================================================

void widgetLabelPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors) {
    int32_t textW = textWidthAccel(font, w->as.label.text);
    int32_t textX = w->x;
    int32_t textY = w->y + (w->h - font->charHeight) / 2;

    if (w->as.label.textAlign == AlignCenterE) {
        textX = w->x + (w->w - textW) / 2;
    } else if (w->as.label.textAlign == AlignEndE) {
        textX = w->x + w->w - textW;
    }

    if (!w->enabled) {
        drawTextAccelEmbossed(d, ops, font, textX, textY, w->as.label.text, colors);
        return;
    }

    uint32_t fg = w->fgColor ? w->fgColor : colors->contentFg;
    uint32_t bg = w->bgColor ? w->bgColor : colors->contentBg;

    drawTextAccel(d, ops, font, textX, textY, w->as.label.text, fg, bg, false);
}


// ============================================================
// wgtLabelSetAlign
// ============================================================

void wgtLabelSetAlign(WidgetT *w, WidgetAlignE align) {
    if (w && w->type == WidgetLabelE) {
        w->as.label.textAlign = align;
    }
}