fix raygui generated bindings

libs/raygui/bindings.json

@@ -826,12 +826,12 @@
         },
         {
           "name": "focus",
-          "typ": "*i32"
+          "typ": "?*i32"
         }
       ],
       "returnType": "i32",
       "description": "List View with extended parameters",
-      "custom": false
+      "custom": true
     },
     {
       "name": "GuiMessageBox",

libs/raygui/generate.zig

@@ -204,7 +204,12 @@ fn writeFunctions(
                 try file.writeAll(try allocPrint(allocator, "@intToPtr([*c]raygui.{s}, @ptrToInt(&{s})),\n", .{ stripType(param.typ), param.name }));
             } else if (isPointer(param.typ)) {
                 if (isConst(param.typ)) {
-                    try file.writeAll(try allocPrint(allocator, "@intToPtr([*c]const {s}, @ptrToInt({s})),\n", .{ stripType(param.typ), param.name }));
+                    const stripped = stripType(param.typ);
+                    if (isPointer(stripped) and isConst(stripped)) {
+                        try file.writeAll(try allocPrint(allocator, "@intToPtr([*c][*c]const {s}, @ptrToInt({s})),\n", .{ stripType(stripped), param.name }));
+                    } else {
+                        try file.writeAll(try allocPrint(allocator, "@intToPtr([*c]const {s}, @ptrToInt({s})),\n", .{ stripped, param.name }));
+                    }
                 } else {
                     try file.writeAll(try allocPrint(allocator, "@ptrCast([*c]{s}, {s}),\n", .{ stripType(param.typ), param.name }));
                 }

libs/raygui/raygui.zig

@@ -290,7 +290,7 @@ pub fn GuiTabBar(
 ) i32 {
     return raygui.mGuiTabBar(
         @as([*c]raygui.Rectangle, @ptrFromInt(@intFromPtr(&bounds))),
-        @as([*c]const [*:0]const u8, @ptrFromInt(@intFromPtr(text))),
+        @as([*c][*c]const u8, @ptrFromInt(@intFromPtr(text))),
         count,
         @as([*c]i32, @ptrCast(active)),
     );
@@ -597,11 +597,11 @@ pub fn GuiListViewEx(
     count: i32,
     scrollIndex: *i32,
     active: *i32,
-    focus: *i32,
+    focus: ?*i32,
 ) i32 {
     return raygui.mGuiListViewEx(
         @as([*c]raygui.Rectangle, @ptrFromInt(@intFromPtr(&bounds))),
-        @as([*c]const [*:0]const u8, @ptrFromInt(@intFromPtr(text))),
+        @as([*c][*c]const u8, @ptrFromInt(@intFromPtr(text))),
         count,
         @as([*c]i32, @ptrCast(scrollIndex)),
         @as([*c]i32, @ptrCast(active)),

src/gui-layout.zig

@@ -0,0 +1,70 @@
+const Self = @This();
+const rl = @import("raylib");
+const std = @import("std");
+
+const LayoutFrame = struct {
+    ox: f32,
+    oy: f32,
+    sx: f32,
+    sy: f32,
+};
+
+const LayoutStack = std.BoundedArray(LayoutFrame, 16);
+
+stack: LayoutStack,
+
+pub fn init() Self {
+    var stack = LayoutStack.init(0) catch unreachable;
+    stack.append(.{
+        .ox = 0,
+        .oy = 0,
+        .sx = 1,
+        .sy = 1,
+    }) catch unreachable;
+
+    return Self { .stack = stack };
+}
+
+pub fn deinit(self: *Self) void {
+    if (self.stack.len > 1) {
+        @panic(".push() was called more times than .pop()");
+    }
+}
+
+pub fn top(self: *Self) *LayoutFrame {
+    return &self.stack.buffer[self.stack.len-1];
+}
+
+pub fn push(self: *Self) void {
+    const top_frame = self.top();
+    self.stack.append(top_frame.*) catch @panic("LayoutStack is too small, increase hard-coded limit");
+}
+
+pub fn pop(self: *Self) void {
+    if (self.stack.len == 1) {
+        @panic(".pop() was called more times than .push()");
+    }
+    _ = self.stack.pop();
+}
+
+pub fn translate(self: *Self, x: f32, y: f32) void {
+    const top_frame = self.top();
+    top_frame.ox += x * top_frame.sx;
+    top_frame.oy += y * top_frame.sy;
+}
+
+pub fn scale(self: *Self, x: f32, y: f32) void {
+    const top_frame = self.top();
+    top_frame.sx *= x;
+    top_frame.sy *= y;
+}
+
+pub fn rect(self: *Self, x: f32, y: f32, width: f32, height: f32) rl.Rectangle {
+    const top_frame = self.top();
+    return rl.Rectangle {
+        .x = x * top_frame.sx + top_frame.ox,
+        .y = y * top_frame.sy + top_frame.oy,
+        .width = width * top_frame.sx,
+        .height = height * top_frame.sy
+    };
+}

src/main-scene.zig

@@ -3,6 +3,7 @@ const rl = @import("raylib");
 const gui = @import("raygui");
 const std = @import("std");
 const roms = @import("./roms.zig");
+const GUILayout = @import("./gui-layout.zig");
 const ROM = roms.ROM;
 
 const ChipContext = @import("chip.zig");
@@ -127,27 +128,24 @@ fn GuiListView(
     scroll_index: *i32,
     active: *i32,
 ) !i32 {
-    var needed_size: usize = 0;
-    needed_size += items.len-1; // N-1 character are needed for the separators
-    for (items) |item| {
-        needed_size += item.len;
+    var allocated_count: usize = 0;
+    var items_z = try allocator.alloc([:0]const u8, items.len);
+    var items_zn = try allocator.alloc([*:0]const u8, items.len);
+    defer {
+        for (0..allocated_count) |i| {
+            allocator.free(items_z[i]);
+        }
+        allocator.free(items_z);
+        allocator.free(items_zn);
     }
 
-    var str_buffer = try allocator.allocSentinel(u8, needed_size, 0);
-    defer allocator.free(str_buffer);
-
-    var idx: usize = 0;
     for (0.., items) |i, item| {
-        @memcpy(str_buffer[idx..(idx+item.len)], item);
-        idx += item.len;
-
-        if (i != items.len-1) {
-            str_buffer[idx] = ';';
-            idx += 1;
-        }
+        items_z[i] = try allocator.dupeZ(u8, item);
+        items_zn[i] = items_z[i].ptr;
+        allocated_count += 1;
     }
 
-    return gui.GuiListView(bounds, str_buffer, scroll_index, active);
+    return gui.GuiListViewEx(bounds, items_zn.ptr, @intCast(items_z.len), scroll_index, active, null);
 }
 
 fn GuiListViewMinWidth(allocator: Allocator, height: i32, items: []const []const u8) !i32 {
@@ -184,6 +182,9 @@ pub fn drawGui(self: *Self, allocator: Allocator) !void {
 
     if (!self.is_gui_open) return;
 
+    var layout = GUILayout.init();
+    defer layout.deinit();
+
     const screen_width: f32 = @floatFromInt(rl.GetScreenWidth());
     const screen_height: f32 = @floatFromInt(rl.GetScreenHeight());
     rl.DrawRectangle(0, 0, rl.GetScreenWidth(), rl.GetScreenHeight(), .{
@@ -205,8 +206,8 @@ pub fn drawGui(self: *Self, allocator: Allocator) !void {
         self.is_gui_open = false;
     }
 
-    rl.rlPushMatrix();
-    rl.rlTranslatef(window.x, window.y, 0);
+    layout.push();
+    layout.translate(window.x, window.y);
 
     const rom_list_names = try allocator.alloc([]const u8, rom_list.len);
     defer allocator.free(rom_list_names);
@@ -219,11 +220,11 @@ pub fn drawGui(self: *Self, allocator: Allocator) !void {
     const list_width = try GuiListViewMinWidth(allocator, list_height, rom_list_names) + 20;
     _ = try GuiListView(
         allocator,
-        .{.x=10,.y=24, .width=@floatFromInt(list_width), .height=list_height},
+        layout.rect(10, 24, @floatFromInt(list_width), list_height),
         rom_list_names,
         &self.rom_list_scroll_index,
         &self.selected_rom_index
     );
 
-    rl.rlPopMatrix();
+    layout.pop();
 }