feat: extend Files app marquee selection and highlight to list view

kernel/src/Api/BuildNo.hpp

@@ -12,4 +12,4 @@
 
 #pragma once
 
-#define MONTAUK_BUILD_NUMBER 48
+#define MONTAUK_BUILD_NUMBER 49

programs/src/desktop/apps/filemanager/events.cpp

@@ -153,6 +153,7 @@ void filemanager_on_mouse(Window* win, MouseEvent& ev) {
 
                 if (clicked_idx >= 0 && clicked_idx < fm->entry_count) {
                     uint64_t now = montauk::get_milliseconds();
+                    filemanager_clear_multi_selection(fm);
 
                     // Double-click detection
                     if (fm->last_click_item == clicked_idx &&
@@ -166,15 +167,24 @@ void filemanager_on_mouse(Window* win, MouseEvent& ev) {
                         fm->last_click_time = now;
                     }
                 } else {
+                    // Background click in list area: start marquee drag
                     fm->selected = -1;
+                    filemanager_clear_multi_selection(fm);
+                    fm->marquee_active = true;
+                    fm->marquee_start_x = local_x;
+                    fm->marquee_start_y = rel_y;
+                    fm->marquee_cur_x = local_x;
+                    fm->marquee_cur_y = rel_y;
                 }
             }
         }
     }
 
-    // ---- Marquee drag in grid view ----
+    // ---- Marquee drag (grid or list view) ----
     if (fm->marquee_active) {
-        int list_y = FM_TOOLBAR_H + FM_PATHBAR_H;
+        int list_y = fm->grid_view
+            ? FM_TOOLBAR_H + FM_PATHBAR_H
+            : FM_TOOLBAR_H + FM_PATHBAR_H + FM_HEADER_H;
         int rel_y = local_y - list_y + fm->scrollbar.scroll_offset;
         int clamp_x = local_x;
         if (clamp_x < 0) clamp_x = 0;
@@ -187,17 +197,17 @@ void filemanager_on_mouse(Window* win, MouseEvent& ev) {
             fm->marquee_cur_y = rel_y;
         }
 
-        // Recompute hit-set every frame so icons highlight live during the drag.
-        int cols = (cw - FM_SCROLLBAR_W) / FM_GRID_CELL_W;
-        if (cols < 1) cols = 1;
-
         int rx0 = fm->marquee_start_x < fm->marquee_cur_x ? fm->marquee_start_x : fm->marquee_cur_x;
         int ry0 = fm->marquee_start_y < fm->marquee_cur_y ? fm->marquee_start_y : fm->marquee_cur_y;
         int rx1 = fm->marquee_start_x > fm->marquee_cur_x ? fm->marquee_start_x : fm->marquee_cur_x;
         int ry1 = fm->marquee_start_y > fm->marquee_cur_y ? fm->marquee_start_y : fm->marquee_cur_y;
 
+        // Recompute hit-set every frame so entries highlight live during the drag.
         filemanager_clear_multi_selection(fm);
         int limit = fm->entry_count < 64 ? fm->entry_count : 64;
+        if (fm->grid_view) {
+            int cols = (cw - FM_SCROLLBAR_W) / FM_GRID_CELL_W;
+            if (cols < 1) cols = 1;
             for (int i = 0; i < limit; i++) {
                 int col = i % cols;
                 int row = i / cols;
@@ -213,6 +223,18 @@ void filemanager_on_mouse(Window* win, MouseEvent& ev) {
                 fm->multi_selected[i] = true;
                 fm->multi_count++;
             }
+        } else {
+            // List rows span the full width, so select any row whose vertical
+            // extent overlaps the marquee box.
+            for (int i = 0; i < limit; i++) {
+                int cell_y = i * FM_ITEM_H;
+                int cy1 = cell_y + FM_ITEM_H;
+                if (ry1 < cell_y || ry0 >= cy1) continue;
+
+                fm->multi_selected[i] = true;
+                fm->multi_count++;
+            }
+        }
         fm->selected = -1;
 
         if (!ev.left_held()) {
@@ -262,8 +284,16 @@ void filemanager_on_mouse(Window* win, MouseEvent& ev) {
                     int idx = rel_y / FM_ITEM_H;
                     if (idx >= 0 && idx < fm->entry_count) {
                         target_idx = idx;
+                        // Preserve multi-selection if right-clicking inside it,
+                        // otherwise replace it with a single selection.
+                        if (!(fm->multi_count > 0 && fm->multi_selected[idx])) {
+                            filemanager_clear_multi_selection(fm);
                             fm->selected = idx;
                         }
+                    } else {
+                        filemanager_clear_multi_selection(fm);
+                        fm->selected = -1;
+                    }
                 }
             }
         }

programs/src/desktop/apps/filemanager/render.cpp

@@ -105,6 +105,34 @@ static void draw_centered_grid_label(Canvas& c, int cell_x, int y, const char* l
     c.text(tx, y, label, color);
 }
 
+// Marquee overlay (translucent accent wash + darker outline). Marquee
+// coordinates are stored in content space (y = rel_y, anchored to scroll), so
+// list_y is the top of the scrollable area for the active view.
+static void draw_marquee(Canvas& c, FileManagerState* fm, int list_y) {
+    if (!fm->marquee_active) return;
+    DesktopState* ds = fm->desktop;
+
+    int rx0 = fm->marquee_start_x < fm->marquee_cur_x ? fm->marquee_start_x : fm->marquee_cur_x;
+    int ry0 = fm->marquee_start_y < fm->marquee_cur_y ? fm->marquee_start_y : fm->marquee_cur_y;
+    int rx1 = fm->marquee_start_x > fm->marquee_cur_x ? fm->marquee_start_x : fm->marquee_cur_x;
+    int ry1 = fm->marquee_start_y > fm->marquee_cur_y ? fm->marquee_start_y : fm->marquee_cur_y;
+
+    int sy0 = list_y + ry0 - fm->scrollbar.scroll_offset;
+    int sy1 = list_y + ry1 - fm->scrollbar.scroll_offset;
+    int max_x = c.w - FM_SCROLLBAR_W;
+    if (rx1 > max_x) rx1 = max_x;
+    if (sy0 < list_y) sy0 = list_y;
+    if (sy1 > c.h) sy1 = c.h;
+    int mw = rx1 - rx0;
+    int mh = sy1 - sy0;
+    if (mw > 0 && mh > 0) {
+        Color accent = ds ? ds->settings.accent_color : colors::ACCENT;
+        Color wash = Color::from_rgba(accent.r, accent.g, accent.b, 80);
+        c.fill_rect_alpha(rx0, sy0, mw, mh, wash);
+        c.rect(rx0, sy0, mw, mh, gui::mtk::darken(accent, 48));
+    }
+}
+
 int filemanager_grid_row_height(FileManagerState* fm, int row, int cols) {
     if (!fm || cols <= 0 || row < 0) return FM_GRID_CELL_H;
 
@@ -408,27 +436,7 @@ void filemanager_on_draw(Window* win, Framebuffer& fb) {
 
         // Marquee drawn on top of cells: a translucent accent wash so icons
         // and labels remain visible underneath, plus a darker outline.
-        if (fm->marquee_active) {
+        draw_marquee(c, fm, list_y);
-            int rx0 = fm->marquee_start_x < fm->marquee_cur_x ? fm->marquee_start_x : fm->marquee_cur_x;
-            int ry0 = fm->marquee_start_y < fm->marquee_cur_y ? fm->marquee_start_y : fm->marquee_cur_y;
-            int rx1 = fm->marquee_start_x > fm->marquee_cur_x ? fm->marquee_start_x : fm->marquee_cur_x;
-            int ry1 = fm->marquee_start_y > fm->marquee_cur_y ? fm->marquee_start_y : fm->marquee_cur_y;
-
-            int sy0 = list_y + ry0 - fm->scrollbar.scroll_offset;
-            int sy1 = list_y + ry1 - fm->scrollbar.scroll_offset;
-            int max_x = c.w - FM_SCROLLBAR_W;
-            if (rx1 > max_x) rx1 = max_x;
-            if (sy0 < list_y) sy0 = list_y;
-            if (sy1 > c.h) sy1 = c.h;
-            int mw = rx1 - rx0;
-            int mh = sy1 - sy0;
-            if (mw > 0 && mh > 0) {
-                Color accent = ds ? ds->settings.accent_color : colors::ACCENT;
-                Color wash = Color::from_rgba(accent.r, accent.g, accent.b, 80);
-                c.fill_rect_alpha(rx0, sy0, mw, mh, wash);
-                c.rect(rx0, sy0, mw, mh, gui::mtk::darken(accent, 48));
-            }
-        }
     } else {
         // ---- List View ----
 
@@ -471,8 +479,9 @@ void filemanager_on_draw(Window* win, Framebuffer& fb) {
             int iy = list_y + (i - scroll_items) * FM_ITEM_H - (fm->scrollbar.scroll_offset % FM_ITEM_H);
             if (iy + FM_ITEM_H <= list_y || iy >= c.h) continue;
 
-            // Highlight selected
+            // Highlight selected (single or marquee multi-selection)
-            if (i == fm->selected) {
+            bool row_selected = (i == fm->selected) || (i < 64 && fm->multi_selected[i]);
+            if (row_selected) {
                 int sy = gui_max(iy, list_y);
                 int sh = gui_min(iy + FM_ITEM_H, c.h) - sy;
                 if (sh > 0)
@@ -592,6 +601,9 @@ void filemanager_on_draw(Window* win, Framebuffer& fb) {
                 c.text(type_col_x, ty, type_str, dim);
             }
         }
+
+        // Marquee overlay drawn on top of the rows.
+        draw_marquee(c, fm, list_y);
     }
 
     // ---- Scrollbar ----