3 files changed, 55 insertions(+), 10 deletions(-)

M src/Runtime.zig
M src/config.zig
M src/types.zig

@@ 174,18 174,47 @@ fn event_touch_handle(runtime: *@This(), evt_data: linput.input_event) !void {
     };
 
     if (run == .FingerDrag or run == .FingerDown or run == .FingerUp) {
-        // Invalidate out of bound events
-        if (runtime.touch_pending.?.y < framebuffer.fb_vinfo.yres - h or runtime.touch_pending.?.y > framebuffer.fb_vinfo.yres) return;
+        defer {
+            if (run == .FingerUp) runtime.touch_pending = null;
+        }
 
-        // Select item on grid
-        try utilgrid.grid_calculate(runtime.grid(), runtime.dims_cols(), runtime.dims_rows(), 0, config.status_height, w, h, grid_calculate_callback_register_click, runtime);
+        if (runtime.touch_pending.?.y < framebuffer.fb_vinfo.yres - h or runtime.touch_pending.?.y > framebuffer.fb_vinfo.yres) {
+            // OOB touches - process swipes
+            if (run == .FingerDown) {
+                runtime.touch_start = .{
+                    .coordinates = runtime.touch_pending.?,
+                    .start_time = utiltime.now(),
+                };
+            } else if (run == .FingerUp and runtime.touch_start != null) {
+                defer runtime.touch_start = null;
+                if (utiltime.timeval_delta_ms(utiltime.now(), runtime.touch_start.?.start_time) > 2000) return;
+                const drag_threshold = 300;
+
+                const swipe : ?types.DragSwipe = swipe: {
+                    if (runtime.touch_pending.?.y > runtime.touch_start.?.coordinates.y + drag_threshold) break :swipe .UD;
+                    if (runtime.touch_pending.?.y < runtime.touch_start.?.coordinates.y - drag_threshold) break :swipe .DU;
+                    if (runtime.touch_pending.?.x > runtime.touch_start.?.coordinates.x + drag_threshold) break :swipe .LR;
+                    if (runtime.touch_pending.?.x < runtime.touch_start.?.coordinates.x - drag_threshold) break :swipe .RL;
+                    break :swipe null;
+                };
+
+                for (config.drag_actions) |config_action| {
+                    if (config_action.swipe == swipe) {
+                        config_action.handler(runtime, config_action.arg);
+                        runtime.redraw = true;
+                    }
+                }
+            }
 
-        // Select item, deslect in grid and invalid pending touch
-        if (run == .FingerUp) {
-            runtime.grid_select();
-            if (runtime.grid_current_index()) |current_index| runtime.grid()[current_index].touched = false;
-            runtime.touch_pending = null;
-            runtime.redraw = true;
+        } else {
+            // Select item on grid
+            runtime.touch_start = null;
+            try utilgrid.grid_calculate(runtime.grid(), runtime.dims_cols(), runtime.dims_rows(), 0, config.status_height, w, h, grid_calculate_callback_register_click, runtime);
+            if (run == .FingerUp) {
+                runtime.grid_select();
+                if (runtime.grid_current_index()) |current_index| runtime.grid()[current_index].touched = false;
+                runtime.redraw = true;
+            }
         }
     }
 }

@@ 230,3 230,11 @@ pub const keybinding_actions = [_]types.KeybindingAction{
     .{ .mode = .Lock, .submode = .{ .Lock = .ScreenOff }, .keybinding = .{ .key = .Down, .MultiTap = 1, .HoldStart = true }, .handler = handlers.handler_lock_submode_screen_toggle },
     .{ .mode = .Lock, .submode = .{ .Lock = .ScreenOff }, .keybinding = .{ .key = .Select, .MultiTap = 1, .HoldStart = true }, .handler = handlers.handler_mode_lock_toggle },
 };
+
+// Drag actions
+pub const drag_actions = [_]types.DragAction{
+    .{ .swipe = .LR, .handler = handlers.handler_vt_delta, .arg = .{ .Number = -1 } },
+    .{ .swipe = .RL, .handler = handlers.handler_vt_delta, .arg = .{ .Number = 1 } },
+    .{ .swipe = .DU, .handler = handlers.handler_backlight_delta, .arg = .{ .Number = 1 } },
+    .{ .swipe = .UD, .handler = handlers.handler_backlight_delta, .arg = .{ .Number = -1 } },
+};

@@ 47,6 47,14 @@ pub const KeybindingAction = struct {
     arg: ?HandlerArg = null,
 };
 
+pub const DragSwipe = enum{ LR, RL, UD, DU };
+
+pub const DragAction = struct {
+    swipe: DragSwipe,
+    handler: fn (runtime: *@import("./Runtime.zig"), arg: ?HandlerArg) void,
+    arg: ?HandlerArg = null,
+};
+
 pub const GridItem = struct {
     t: []const u8, // E.g. string to display (and type if v not provided)
     v: ?c_ushort = null, // E.g. v is actual key vaue which overrides t[] if provided