// widgetListView.c — ListView (multi-column list) widget

#include "widgetInternal.h"

#include <stdlib.h>
#include <string.h>

#define LISTVIEW_BORDER   2
#define LISTVIEW_PAD      3
#define LISTVIEW_SB_W     14
#define LISTVIEW_MIN_ROWS 4
#define LISTVIEW_COL_PAD  6
#define LISTVIEW_SORT_W   10


// ============================================================
// Prototypes
// ============================================================

static void drawListViewHScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t sbX, int32_t sbY, int32_t sbW, int32_t totalW, int32_t visibleW);
static void drawListViewVScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t sbX, int32_t sbY, int32_t sbH, int32_t totalRows, int32_t visibleRows);
static void listViewBuildSortIndex(WidgetT *w);
static void resolveColumnWidths(WidgetT *w, const BitmapFontT *font);


// ============================================================
// drawListViewHScrollbar
// ============================================================

static void drawListViewHScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t sbX, int32_t sbY, int32_t sbW, int32_t totalW, int32_t visibleW) {
    if (sbW < LISTVIEW_SB_W * 3) {
        return;
    }

    // Trough background
    BevelStyleT troughBevel = BEVEL_TROUGH(colors);
    drawBevel(d, ops, sbX, sbY, sbW, LISTVIEW_SB_W, &troughBevel);

    // Left arrow button
    BevelStyleT btnBevel = BEVEL_RAISED(colors, 1);
    drawBevel(d, ops, sbX, sbY, LISTVIEW_SB_W, LISTVIEW_SB_W, &btnBevel);

    // Left arrow triangle
    {
        int32_t  cx = sbX + LISTVIEW_SB_W / 2;
        int32_t  cy = sbY + LISTVIEW_SB_W / 2;
        uint32_t fg = colors->contentFg;

        for (int32_t i = 0; i < 4; i++) {
            drawVLine(d, ops, cx - 2 + i, cy - i, 1 + i * 2, fg);
        }
    }

    // Right arrow button
    int32_t rightX = sbX + sbW - LISTVIEW_SB_W;
    drawBevel(d, ops, rightX, sbY, LISTVIEW_SB_W, LISTVIEW_SB_W, &btnBevel);

    // Right arrow triangle
    {
        int32_t  cx = rightX + LISTVIEW_SB_W / 2;
        int32_t  cy = sbY + LISTVIEW_SB_W / 2;
        uint32_t fg = colors->contentFg;

        for (int32_t i = 0; i < 4; i++) {
            drawVLine(d, ops, cx + 2 - i, cy - i, 1 + i * 2, fg);
        }
    }

    // Thumb
    int32_t trackLen = sbW - LISTVIEW_SB_W * 2;

    if (trackLen > 0 && totalW > 0) {
        int32_t thumbPos;
        int32_t thumbSize;
        widgetScrollbarThumb(trackLen, totalW, visibleW, w->as.listView.scrollPosH, &thumbPos, &thumbSize);

        drawBevel(d, ops, sbX + LISTVIEW_SB_W + thumbPos, sbY, thumbSize, LISTVIEW_SB_W, &btnBevel);
    }
}


// ============================================================
// drawListViewVScrollbar
// ============================================================

static void drawListViewVScrollbar(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const ColorSchemeT *colors, int32_t sbX, int32_t sbY, int32_t sbH, int32_t totalRows, int32_t visibleRows) {
    if (sbH < LISTVIEW_SB_W * 3) {
        return;
    }

    // Trough background
    BevelStyleT troughBevel = BEVEL_TROUGH(colors);
    drawBevel(d, ops, sbX, sbY, LISTVIEW_SB_W, sbH, &troughBevel);

    // Up arrow button
    BevelStyleT btnBevel = BEVEL_RAISED(colors, 1);
    drawBevel(d, ops, sbX, sbY, LISTVIEW_SB_W, LISTVIEW_SB_W, &btnBevel);

    // Up arrow triangle
    {
        int32_t  cx = sbX + LISTVIEW_SB_W / 2;
        int32_t  cy = sbY + LISTVIEW_SB_W / 2;
        uint32_t fg = colors->contentFg;

        for (int32_t i = 0; i < 4; i++) {
            drawHLine(d, ops, cx - i, cy - 2 + i, 1 + i * 2, fg);
        }
    }

    // Down arrow button
    int32_t downY = sbY + sbH - LISTVIEW_SB_W;
    drawBevel(d, ops, sbX, downY, LISTVIEW_SB_W, LISTVIEW_SB_W, &btnBevel);

    // Down arrow triangle
    {
        int32_t  cx = sbX + LISTVIEW_SB_W / 2;
        int32_t  cy = downY + LISTVIEW_SB_W / 2;
        uint32_t fg = colors->contentFg;

        for (int32_t i = 0; i < 4; i++) {
            drawHLine(d, ops, cx - i, cy + 2 - i, 1 + i * 2, fg);
        }
    }

    // Thumb
    int32_t trackLen = sbH - LISTVIEW_SB_W * 2;

    if (trackLen > 0 && totalRows > 0) {
        int32_t thumbPos;
        int32_t thumbSize;
        widgetScrollbarThumb(trackLen, totalRows, visibleRows, w->as.listView.scrollPos, &thumbPos, &thumbSize);

        drawBevel(d, ops, sbX, sbY + LISTVIEW_SB_W + thumbPos, LISTVIEW_SB_W, thumbSize, &btnBevel);
    }
}


// ============================================================
// listViewBuildSortIndex
// ============================================================
//
// Build or rebuild the sortIndex array. Uses insertion sort
// (stable) on the sort column. If no sort is active, frees
// the index so paint uses natural order.

static void listViewBuildSortIndex(WidgetT *w) {
    int32_t rowCount = w->as.listView.rowCount;
    int32_t sortCol  = w->as.listView.sortCol;
    int32_t colCount = w->as.listView.colCount;

    // No sort active — clear index
    if (sortCol < 0 || w->as.listView.sortDir == ListViewSortNoneE || rowCount <= 0) {
        if (w->as.listView.sortIndex) {
            free(w->as.listView.sortIndex);
            w->as.listView.sortIndex = NULL;
        }

        return;
    }

    // Allocate or reuse
    int32_t *idx = w->as.listView.sortIndex;

    if (!idx) {
        idx = (int32_t *)malloc(rowCount * sizeof(int32_t));

        if (!idx) {
            return;
        }

        w->as.listView.sortIndex = idx;
    }

    // Initialize identity
    for (int32_t i = 0; i < rowCount; i++) {
        idx[i] = i;
    }

    // Insertion sort — stable, O(n^2) but fine for typical row counts
    bool ascending = (w->as.listView.sortDir == ListViewSortAscE);

    for (int32_t i = 1; i < rowCount; i++) {
        int32_t key = idx[i];
        const char *keyStr = w->as.listView.cellData[key * colCount + sortCol];

        if (!keyStr) {
            keyStr = "";
        }

        int32_t j = i - 1;

        while (j >= 0) {
            const char *jStr = w->as.listView.cellData[idx[j] * colCount + sortCol];

            if (!jStr) {
                jStr = "";
            }

            int32_t cmp = strcmp(jStr, keyStr);

            if (!ascending) {
                cmp = -cmp;
            }

            if (cmp <= 0) {
                break;
            }

            idx[j + 1] = idx[j];
            j--;
        }

        idx[j + 1] = key;
    }
}


// ============================================================
// resolveColumnWidths
// ============================================================
//
// Resolve tagged column sizes (pixels, chars, percent, or auto)
// to actual pixel widths. Auto-sized columns (width==0) scan
// cellData for the widest string in that column.

static void resolveColumnWidths(WidgetT *w, const BitmapFontT *font) {
    int32_t colCount = w->as.listView.colCount;
    int32_t parentW  = w->w - LISTVIEW_BORDER * 2;

    if (parentW < 0) {
        parentW = 0;
    }

    int32_t totalW = 0;

    for (int32_t c = 0; c < colCount; c++) {
        int32_t taggedW = w->as.listView.cols[c].width;

        if (taggedW == 0) {
            // Auto-size: scan data for widest string in this column
            int32_t maxLen = (int32_t)strlen(w->as.listView.cols[c].title);

            for (int32_t r = 0; r < w->as.listView.rowCount; r++) {
                const char *cell = w->as.listView.cellData[r * colCount + c];

                if (cell) {
                    int32_t slen = (int32_t)strlen(cell);

                    if (slen > maxLen) {
                        maxLen = slen;
                    }
                }
            }

            w->as.listView.resolvedColW[c] = maxLen * font->charWidth + LISTVIEW_COL_PAD;
        } else {
            w->as.listView.resolvedColW[c] = wgtResolveSize(taggedW, parentW, font->charWidth);
        }

        totalW += w->as.listView.resolvedColW[c];
    }

    w->as.listView.totalColW = totalW;
}


// ============================================================
// widgetListViewColBorderHit
// ============================================================
//
// Returns true if (vx, vy) is on a column header border (resize zone).
// Coordinates are in widget/virtual space (scroll-adjusted).

bool widgetListViewColBorderHit(const WidgetT *w, int32_t vx, int32_t vy) {
    if (!w || w->type != WidgetListViewE || w->as.listView.colCount == 0) {
        return false;
    }

    AppContextT       *ctx  = (AppContextT *)w->window->widgetRoot->userData;
    const BitmapFontT *font = &ctx->font;
    int32_t headerH   = font->charHeight + 4;
    int32_t headerTop = w->y + LISTVIEW_BORDER;

    if (vy < headerTop || vy >= headerTop + headerH) {
        return false;
    }

    int32_t colX = w->x + LISTVIEW_BORDER - w->as.listView.scrollPosH;

    for (int32_t c = 0; c < w->as.listView.colCount; c++) {
        int32_t border = colX + w->as.listView.resolvedColW[c];

        if (vx >= border - 3 && vx <= border + 3) {
            return true;
        }

        colX += w->as.listView.resolvedColW[c];
    }

    return false;
}


// ============================================================
// widgetListViewDestroy
// ============================================================

void widgetListViewDestroy(WidgetT *w) {
    if (w->as.listView.sortIndex) {
        free(w->as.listView.sortIndex);
        w->as.listView.sortIndex = NULL;
    }
}


// ============================================================
// wgtListView
// ============================================================

WidgetT *wgtListView(WidgetT *parent) {
    WidgetT *w = widgetAlloc(parent, WidgetListViewE);

    if (w) {
        w->as.listView.selectedIdx = -1;
        w->as.listView.sortCol     = -1;
        w->as.listView.sortDir     = ListViewSortNoneE;
        w->weight                  = 100;
    }

    return w;
}


// ============================================================
// wgtListViewGetSelected
// ============================================================

int32_t wgtListViewGetSelected(const WidgetT *w) {
    if (!w || w->type != WidgetListViewE) {
        return -1;
    }

    return w->as.listView.selectedIdx;
}


// ============================================================
// wgtListViewSetColumns
// ============================================================

void wgtListViewSetColumns(WidgetT *w, const ListViewColT *cols, int32_t count) {
    if (!w || w->type != WidgetListViewE) {
        return;
    }

    if (count > LISTVIEW_MAX_COLS) {
        count = LISTVIEW_MAX_COLS;
    }

    w->as.listView.cols     = cols;
    w->as.listView.colCount = count;
    w->as.listView.totalColW = 0;
}


// ============================================================
// wgtListViewSetData
// ============================================================

void wgtListViewSetData(WidgetT *w, const char **cellData, int32_t rowCount) {
    if (!w || w->type != WidgetListViewE) {
        return;
    }

    // Free old sort index since row count may have changed
    if (w->as.listView.sortIndex) {
        free(w->as.listView.sortIndex);
        w->as.listView.sortIndex = NULL;
    }

    w->as.listView.cellData  = cellData;
    w->as.listView.rowCount  = rowCount;
    w->as.listView.totalColW = 0;

    if (w->as.listView.selectedIdx >= rowCount) {
        w->as.listView.selectedIdx = rowCount > 0 ? 0 : -1;
    }

    if (w->as.listView.selectedIdx < 0 && rowCount > 0) {
        w->as.listView.selectedIdx = 0;
    }

    // Rebuild sort index if sort is active
    listViewBuildSortIndex(w);
}


// ============================================================
// wgtListViewSetHeaderClickCallback
// ============================================================

void wgtListViewSetHeaderClickCallback(WidgetT *w, void (*cb)(WidgetT *w, int32_t col, ListViewSortE dir)) {
    if (!w || w->type != WidgetListViewE) {
        return;
    }

    w->as.listView.onHeaderClick = cb;
}


// ============================================================
// wgtListViewSetSelected
// ============================================================

void wgtListViewSetSelected(WidgetT *w, int32_t idx) {
    if (!w || w->type != WidgetListViewE) {
        return;
    }

    w->as.listView.selectedIdx = idx;
}


// ============================================================
// wgtListViewSetSort
// ============================================================

void wgtListViewSetSort(WidgetT *w, int32_t col, ListViewSortE dir) {
    if (!w || w->type != WidgetListViewE) {
        return;
    }

    w->as.listView.sortCol = col;
    w->as.listView.sortDir = dir;
    listViewBuildSortIndex(w);
}


// ============================================================
// widgetListViewCalcMinSize
// ============================================================

void widgetListViewCalcMinSize(WidgetT *w, const BitmapFontT *font) {
    int32_t headerH = font->charHeight + 4;
    int32_t minW    = font->charWidth * 12 + LISTVIEW_BORDER * 2 + LISTVIEW_SB_W;

    w->calcMinW = minW;
    w->calcMinH = headerH + LISTVIEW_MIN_ROWS * font->charHeight + LISTVIEW_BORDER * 2;
}


// ============================================================
// widgetListViewOnKey
// ============================================================

void widgetListViewOnKey(WidgetT *w, int32_t key, int32_t mod) {
    (void)mod;

    if (!w || w->type != WidgetListViewE || w->as.listView.rowCount == 0) {
        return;
    }

    int32_t  rowCount = w->as.listView.rowCount;
    int32_t *sortIdx  = w->as.listView.sortIndex;

    // Find current display row from selectedIdx (data row)
    int32_t displaySel = -1;

    if (w->as.listView.selectedIdx >= 0) {
        if (sortIdx) {
            for (int32_t i = 0; i < rowCount; i++) {
                if (sortIdx[i] == w->as.listView.selectedIdx) {
                    displaySel = i;
                    break;
                }
            }
        } else {
            displaySel = w->as.listView.selectedIdx;
        }
    }

    // Compute visible rows for page up/down
    AppContextT       *ctx  = (AppContextT *)w->window->widgetRoot->userData;
    const BitmapFontT *font = &ctx->font;
    int32_t headerH      = font->charHeight + 4;
    int32_t innerH       = w->h - LISTVIEW_BORDER * 2 - headerH;
    int32_t visibleRows  = innerH / font->charHeight;

    if (visibleRows < 1) {
        visibleRows = 1;
    }

    if (key == (0x50 | 0x100)) {
        // Down arrow
        if (displaySel < rowCount - 1) {
            displaySel++;
        } else if (displaySel < 0) {
            displaySel = 0;
        }
    } else if (key == (0x48 | 0x100)) {
        // Up arrow
        if (displaySel > 0) {
            displaySel--;
        } else if (displaySel < 0) {
            displaySel = 0;
        }
    } else if (key == (0x47 | 0x100)) {
        // Home
        displaySel = 0;
    } else if (key == (0x4F | 0x100)) {
        // End
        displaySel = rowCount - 1;
    } else if (key == (0x51 | 0x100)) {
        // Page Down
        displaySel += visibleRows;

        if (displaySel >= rowCount) {
            displaySel = rowCount - 1;
        }
    } else if (key == (0x49 | 0x100)) {
        // Page Up
        displaySel -= visibleRows;

        if (displaySel < 0) {
            displaySel = 0;
        }
    } else {
        return;
    }

    // Convert display row back to data row
    w->as.listView.selectedIdx = sortIdx ? sortIdx[displaySel] : displaySel;

    // Scroll to keep selection visible (in display-row space)
    if (displaySel >= 0) {
        if (displaySel < w->as.listView.scrollPos) {
            w->as.listView.scrollPos = displaySel;
        } else if (displaySel >= w->as.listView.scrollPos + visibleRows) {
            w->as.listView.scrollPos = displaySel - visibleRows + 1;
        }
    }

    if (w->onChange) {
        w->onChange(w);
    }

    wgtInvalidatePaint(w);
}


// ============================================================
// widgetListViewOnMouse
// ============================================================

void widgetListViewOnMouse(WidgetT *hit, WidgetT *root, int32_t vx, int32_t vy) {
    hit->focused = true;

    AppContextT       *ctx  = (AppContextT *)root->userData;
    const BitmapFontT *font = &ctx->font;

    // Resolve column widths if needed
    if (hit->as.listView.totalColW == 0 && hit->as.listView.colCount > 0) {
        resolveColumnWidths(hit, font);
    }

    int32_t headerH     = font->charHeight + 4;
    int32_t innerH      = hit->h - LISTVIEW_BORDER * 2 - headerH;
    int32_t innerW      = hit->w - LISTVIEW_BORDER * 2;
    int32_t visibleRows = innerH / font->charHeight;
    int32_t totalColW   = hit->as.listView.totalColW;
    bool    needVSb     = (hit->as.listView.rowCount > visibleRows);
    bool    needHSb     = false;

    if (needVSb) {
        innerW -= LISTVIEW_SB_W;
    }

    if (totalColW > innerW) {
        needHSb = true;
        innerH -= LISTVIEW_SB_W;
        visibleRows = innerH / font->charHeight;

        if (!needVSb && hit->as.listView.rowCount > visibleRows) {
            needVSb = true;
            innerW -= LISTVIEW_SB_W;
        }
    }

    if (visibleRows < 1) {
        visibleRows = 1;
    }

    // Clamp scroll positions
    int32_t maxScrollV = hit->as.listView.rowCount - visibleRows;
    int32_t maxScrollH = totalColW - innerW;

    if (maxScrollV < 0) {
        maxScrollV = 0;
    }

    if (maxScrollH < 0) {
        maxScrollH = 0;
    }

    hit->as.listView.scrollPos  = clampInt(hit->as.listView.scrollPos, 0, maxScrollV);
    hit->as.listView.scrollPosH = clampInt(hit->as.listView.scrollPosH, 0, maxScrollH);

    // Check vertical scrollbar
    if (needVSb) {
        int32_t sbX = hit->x + hit->w - LISTVIEW_BORDER - LISTVIEW_SB_W;
        int32_t sbY = hit->y + LISTVIEW_BORDER + headerH;
        int32_t sbH = innerH;

        if (vx >= sbX && vy >= sbY && vy < sbY + sbH) {
            int32_t relY     = vy - sbY;
            int32_t trackLen = sbH - LISTVIEW_SB_W * 2;

            if (relY < LISTVIEW_SB_W) {
                // Up arrow
                if (hit->as.listView.scrollPos > 0) {
                    hit->as.listView.scrollPos--;
                }
            } else if (relY >= sbH - LISTVIEW_SB_W) {
                // Down arrow
                if (hit->as.listView.scrollPos < maxScrollV) {
                    hit->as.listView.scrollPos++;
                }
            } else if (trackLen > 0) {
                // Track — page up/down
                int32_t thumbPos;
                int32_t thumbSize;
                widgetScrollbarThumb(trackLen, hit->as.listView.rowCount, visibleRows, hit->as.listView.scrollPos, &thumbPos, &thumbSize);

                int32_t trackRelY = relY - LISTVIEW_SB_W;

                if (trackRelY < thumbPos) {
                    hit->as.listView.scrollPos -= visibleRows;
                    hit->as.listView.scrollPos = clampInt(hit->as.listView.scrollPos, 0, maxScrollV);
                } else if (trackRelY >= thumbPos + thumbSize) {
                    hit->as.listView.scrollPos += visibleRows;
                    hit->as.listView.scrollPos = clampInt(hit->as.listView.scrollPos, 0, maxScrollV);
                }
            }

            return;
        }
    }

    // Check horizontal scrollbar
    if (needHSb) {
        int32_t sbX = hit->x + LISTVIEW_BORDER;
        int32_t sbY = hit->y + hit->h - LISTVIEW_BORDER - LISTVIEW_SB_W;
        int32_t sbW = innerW;

        if (vy >= sbY && vx >= sbX && vx < sbX + sbW) {
            int32_t relX     = vx - sbX;
            int32_t trackLen = sbW - LISTVIEW_SB_W * 2;
            int32_t pageSize = innerW - font->charWidth;

            if (pageSize < font->charWidth) {
                pageSize = font->charWidth;
            }

            if (relX < LISTVIEW_SB_W) {
                // Left arrow
                hit->as.listView.scrollPosH -= font->charWidth;
            } else if (relX >= sbW - LISTVIEW_SB_W) {
                // Right arrow
                hit->as.listView.scrollPosH += font->charWidth;
            } else if (trackLen > 0) {
                // Track — page left/right
                int32_t thumbPos;
                int32_t thumbSize;
                widgetScrollbarThumb(trackLen, totalColW, innerW, hit->as.listView.scrollPosH, &thumbPos, &thumbSize);

                int32_t trackRelX = relX - LISTVIEW_SB_W;

                if (trackRelX < thumbPos) {
                    hit->as.listView.scrollPosH -= pageSize;
                } else if (trackRelX >= thumbPos + thumbSize) {
                    hit->as.listView.scrollPosH += pageSize;
                }
            }

            hit->as.listView.scrollPosH = clampInt(hit->as.listView.scrollPosH, 0, maxScrollH);
            return;
        }
    }

    // Check dead corner (both scrollbars present)
    if (needVSb && needHSb) {
        int32_t cornerX = hit->x + hit->w - LISTVIEW_BORDER - LISTVIEW_SB_W;
        int32_t cornerY = hit->y + hit->h - LISTVIEW_BORDER - LISTVIEW_SB_W;

        if (vx >= cornerX && vy >= cornerY) {
            return;
        }
    }

    // Check column header area
    int32_t headerTop = hit->y + LISTVIEW_BORDER;

    if (vy >= headerTop && vy < headerTop + headerH) {
        // Check for column border resize (3px zone on each side of border)
        int32_t colX = hit->x + LISTVIEW_BORDER - hit->as.listView.scrollPosH;

        for (int32_t c = 0; c < hit->as.listView.colCount; c++) {
            int32_t cw     = hit->as.listView.resolvedColW[c];
            int32_t border = colX + cw;

            if (vx >= border - 3 && vx <= border + 3 && c < hit->as.listView.colCount) {
                // Start column resize drag
                sResizeListView = hit;
                sResizeCol      = c;
                sResizeStartX   = vx;
                sResizeOrigW    = cw;
                return;
            }

            colX += cw;
        }

        // Not on a border — check for sort click
        colX = hit->x + LISTVIEW_BORDER - hit->as.listView.scrollPosH;

        for (int32_t c = 0; c < hit->as.listView.colCount; c++) {
            int32_t cw = hit->as.listView.resolvedColW[c];

            if (vx >= colX && vx < colX + cw) {
                // Toggle sort direction for this column
                if (hit->as.listView.sortCol == c) {
                    if (hit->as.listView.sortDir == ListViewSortAscE) {
                        hit->as.listView.sortDir = ListViewSortDescE;
                    } else {
                        hit->as.listView.sortDir = ListViewSortAscE;
                    }
                } else {
                    hit->as.listView.sortCol = c;
                    hit->as.listView.sortDir = ListViewSortAscE;
                }

                listViewBuildSortIndex(hit);

                if (hit->as.listView.onHeaderClick) {
                    hit->as.listView.onHeaderClick(hit, c, hit->as.listView.sortDir);
                }

                wgtInvalidatePaint(hit);
                return;
            }

            colX += cw;
        }

        return;
    }

    // Click on data area
    int32_t dataTop = headerTop + headerH;
    int32_t relY    = vy - dataTop;

    if (relY < 0) {
        return;
    }

    int32_t clickedRow = relY / font->charHeight;
    int32_t displayRow = hit->as.listView.scrollPos + clickedRow;

    if (displayRow >= 0 && displayRow < hit->as.listView.rowCount) {
        int32_t dataRow = hit->as.listView.sortIndex ? hit->as.listView.sortIndex[displayRow] : displayRow;
        hit->as.listView.selectedIdx = dataRow;

        if (hit->onChange) {
            hit->onChange(hit);
        }
    }

    wgtInvalidatePaint(hit);
}


// ============================================================
// widgetListViewPaint
// ============================================================

void widgetListViewPaint(WidgetT *w, DisplayT *d, const BlitOpsT *ops, const BitmapFontT *font, const ColorSchemeT *colors) {
    uint32_t fg = w->fgColor ? w->fgColor : colors->contentFg;
    uint32_t bg = w->bgColor ? w->bgColor : colors->contentBg;

    // Resolve column widths if needed
    if (w->as.listView.totalColW == 0 && w->as.listView.colCount > 0) {
        resolveColumnWidths(w, font);
    }

    int32_t headerH     = font->charHeight + 4;
    int32_t innerH      = w->h - LISTVIEW_BORDER * 2 - headerH;
    int32_t innerW      = w->w - LISTVIEW_BORDER * 2;
    int32_t visibleRows = innerH / font->charHeight;
    int32_t totalColW   = w->as.listView.totalColW;
    bool    needVSb     = (w->as.listView.rowCount > visibleRows);
    bool    needHSb     = false;

    if (needVSb) {
        innerW -= LISTVIEW_SB_W;
    }

    if (totalColW > innerW) {
        needHSb = true;
        innerH -= LISTVIEW_SB_W;
        visibleRows = innerH / font->charHeight;

        if (!needVSb && w->as.listView.rowCount > visibleRows) {
            needVSb = true;
            innerW -= LISTVIEW_SB_W;
        }
    }

    if (visibleRows < 1) {
        visibleRows = 1;
    }

    // Sunken border
    BevelStyleT bevel = BEVEL_SUNKEN(colors, bg, 2);
    drawBevel(d, ops, w->x, w->y, w->w, w->h, &bevel);

    // Clamp scroll positions
    int32_t maxScrollV = w->as.listView.rowCount - visibleRows;
    int32_t maxScrollH = totalColW - innerW;

    if (maxScrollV < 0) {
        maxScrollV = 0;
    }

    if (maxScrollH < 0) {
        maxScrollH = 0;
    }

    w->as.listView.scrollPos  = clampInt(w->as.listView.scrollPos, 0, maxScrollV);
    w->as.listView.scrollPosH = clampInt(w->as.listView.scrollPosH, 0, maxScrollH);

    int32_t baseX    = w->x + LISTVIEW_BORDER;
    int32_t baseY    = w->y + LISTVIEW_BORDER;
    int32_t colCount = w->as.listView.colCount;

    // ---- Draw column headers ----
    {
        // Clip headers to the content area width
        int32_t oldClipX = d->clipX;
        int32_t oldClipY = d->clipY;
        int32_t oldClipW = d->clipW;
        int32_t oldClipH = d->clipH;
        setClipRect(d, baseX, baseY, innerW, headerH);

        int32_t hdrX = baseX - w->as.listView.scrollPosH;
        BevelStyleT hdrBevel = BEVEL_RAISED(colors, 1);

        for (int32_t c = 0; c < colCount; c++) {
            int32_t cw = w->as.listView.resolvedColW[c];

            // Draw raised button for header
            drawBevel(d, ops, hdrX, baseY, cw, headerH, &hdrBevel);

            // Header text
            int32_t textX = hdrX + LISTVIEW_PAD;
            int32_t textY = baseY + 2;
            int32_t availTextW = cw - LISTVIEW_PAD * 2;

            // Reserve space for sort indicator if this is the sort column
            if (c == w->as.listView.sortCol && w->as.listView.sortDir != ListViewSortNoneE) {
                availTextW -= LISTVIEW_SORT_W;
            }

            if (w->as.listView.cols[c].title) {
                int32_t titleLen = (int32_t)strlen(w->as.listView.cols[c].title);
                int32_t titleW   = titleLen * font->charWidth;

                if (titleW > availTextW) {
                    titleLen = availTextW / font->charWidth;
                }

                if (titleLen > 0) {
                    drawTextN(d, ops, font, textX, textY, w->as.listView.cols[c].title, titleLen, colors->contentFg, colors->windowFace, true);
                }
            }

            // Sort indicator
            if (c == w->as.listView.sortCol && w->as.listView.sortDir != ListViewSortNoneE) {
                int32_t cx = hdrX + cw - LISTVIEW_SORT_W / 2 - LISTVIEW_PAD;
                int32_t cy = baseY + headerH / 2;

                if (w->as.listView.sortDir == ListViewSortAscE) {
                    // Up triangle (ascending)
                    for (int32_t i = 0; i < 4; i++) {
                        drawHLine(d, ops, cx - i, cy - 2 + i, 1 + i * 2, colors->contentFg);
                    }
                } else {
                    // Down triangle (descending)
                    for (int32_t i = 0; i < 4; i++) {
                        drawHLine(d, ops, cx - 3 + i, cy - 1 + i, 7 - i * 2, colors->contentFg);
                    }
                }
            }

            hdrX += cw;
        }

        // Fill any remaining header space to the right of columns
        if (hdrX < baseX + innerW) {
            drawBevel(d, ops, hdrX, baseY, baseX + innerW - hdrX, headerH, &hdrBevel);
        }

        setClipRect(d, oldClipX, oldClipY, oldClipW, oldClipH);
    }

    // ---- Draw data rows ----
    {
        int32_t dataY = baseY + headerH;

        // Set clip rect to data area
        int32_t oldClipX = d->clipX;
        int32_t oldClipY = d->clipY;
        int32_t oldClipW = d->clipW;
        int32_t oldClipH = d->clipH;
        setClipRect(d, baseX, dataY, innerW, innerH);

        int32_t  scrollPos  = w->as.listView.scrollPos;
        int32_t *sortIdx    = w->as.listView.sortIndex;

        // Fill entire data area background first
        rectFill(d, ops, baseX, dataY, innerW, innerH, bg);

        for (int32_t i = 0; i < visibleRows && (scrollPos + i) < w->as.listView.rowCount; i++) {
            int32_t  displayRow = scrollPos + i;
            int32_t  dataRow    = sortIdx ? sortIdx[displayRow] : displayRow;
            int32_t  iy         = dataY + i * font->charHeight;
            uint32_t ifg        = fg;
            uint32_t ibg        = bg;

            if (dataRow == w->as.listView.selectedIdx) {
                ifg = colors->menuHighlightFg;
                ibg = colors->menuHighlightBg;
                rectFill(d, ops, baseX, iy, innerW, font->charHeight, ibg);
            }

            // Draw each cell
            int32_t cellX = baseX - w->as.listView.scrollPosH;

            for (int32_t c = 0; c < colCount; c++) {
                int32_t     cw   = w->as.listView.resolvedColW[c];
                const char *cell = w->as.listView.cellData[dataRow * colCount + c];

                if (cell) {
                    int32_t cellLen  = (int32_t)strlen(cell);
                    int32_t maxChars = (cw - LISTVIEW_PAD * 2) / font->charWidth;

                    if (maxChars < 0) {
                        maxChars = 0;
                    }

                    if (cellLen > maxChars) {
                        cellLen = maxChars;
                    }

                    int32_t tx = cellX + LISTVIEW_PAD;

                    if (w->as.listView.cols[c].align == ListViewAlignRightE) {
                        int32_t renderedW = cellLen * font->charWidth;
                        int32_t availW    = cw - LISTVIEW_PAD * 2;
                        tx = cellX + LISTVIEW_PAD + (availW - renderedW);
                    } else if (w->as.listView.cols[c].align == ListViewAlignCenterE) {
                        int32_t renderedW = cellLen * font->charWidth;
                        int32_t availW    = cw - LISTVIEW_PAD * 2;
                        tx = cellX + LISTVIEW_PAD + (availW - renderedW) / 2;
                    }

                    if (cellLen > 0) {
                        drawTextN(d, ops, font, tx, iy, cell, cellLen, ifg, ibg, true);
                    }
                }

                cellX += cw;
            }
        }

        setClipRect(d, oldClipX, oldClipY, oldClipW, oldClipH);
    }

    // ---- Draw scrollbars ----
    if (needVSb) {
        int32_t sbX = w->x + w->w - LISTVIEW_BORDER - LISTVIEW_SB_W;
        int32_t sbY = w->y + LISTVIEW_BORDER + headerH;
        drawListViewVScrollbar(w, d, ops, colors, sbX, sbY, innerH, w->as.listView.rowCount, visibleRows);
    }

    if (needHSb) {
        int32_t sbX = w->x + LISTVIEW_BORDER;
        int32_t sbY = w->y + w->h - LISTVIEW_BORDER - LISTVIEW_SB_W;
        drawListViewHScrollbar(w, d, ops, colors, sbX, sbY, innerW, totalColW, innerW);

        // Fill dead corner when both scrollbars present
        if (needVSb) {
            rectFill(d, ops, sbX + innerW, sbY, LISTVIEW_SB_W, LISTVIEW_SB_W, colors->windowFace);
        }
    }

    if (w->focused) {
        drawFocusRect(d, ops, w->x + 1, w->y + 1, w->w - 2, w->h - 2, fg);
    }
}