feat: handle window resize events
parent
3e48488201
commit
e39f8e6ec8
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@ -174,12 +174,16 @@ pub fn main() !void {
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// allocate a shared memory file for display purposes
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const Pixel = [4]u8;
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const framebuffer_size = [2]usize{ 128, 128 };
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const framebuffer_file_len = framebuffer_size[0] * framebuffer_size[1] * @sizeOf(Pixel);
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const pool_file_len = 1024 * framebuffer_size[0] * framebuffer_size[1] * @sizeOf(Pixel);
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const framebuffer_fd = try std.os.memfd_create("my-wayland-framebuffer", 0);
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try std.os.ftruncate(framebuffer_fd, framebuffer_file_len);
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const framebuffer_bytes = try std.os.mmap(null, framebuffer_file_len, std.os.PROT.READ | std.os.PROT.WRITE, std.os.MAP.SHARED, framebuffer_fd, 0);
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const framebuffer = @as([*][4]u8, @ptrCast(framebuffer_bytes.ptr))[0 .. framebuffer_bytes.len / @sizeOf([4]u8)];
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const pool_fd = try std.os.memfd_create("my-wayland-framebuffer", 0);
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try std.os.ftruncate(pool_fd, pool_file_len);
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const pool_bytes = try std.os.mmap(null, pool_file_len, std.os.PROT.READ | std.os.PROT.WRITE, std.os.MAP.SHARED, pool_fd, 0);
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var pool_fixed_buffer_allocator = std.heap.FixedBufferAllocator.init(pool_bytes);
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var pool_general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){ .backing_allocator = pool_fixed_buffer_allocator.allocator() };
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const pool_alloc = pool_general_purpose_allocator.allocator();
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const framebuffer = try pool_alloc.alloc(Pixel, framebuffer_size[0] * framebuffer_size[1]);
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// put some interesting colors into the framebuffer
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for (0..framebuffer_size[1]) |y| {
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@ -196,18 +200,22 @@ pub fn main() !void {
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const wl_shm_pool_id = id_pool.create();
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{
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std.debug.print("framebuffer_fd: {}\n", .{framebuffer_fd});
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std.debug.print("framebuffer_fd: {}\n", .{pool_fd});
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try conn.send(
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wayland.core.Shm.Request,
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shm_id,
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.{ .create_pool = .{
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.new_id = wl_shm_pool_id,
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.fd = @enumFromInt(framebuffer_fd),
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.size = framebuffer_file_len,
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.fd = @enumFromInt(pool_fd),
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.size = pool_file_len,
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} },
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);
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}
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var framebuffers = std.AutoHashMap(u32, []Pixel).init(gpa);
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defer framebuffers.deinit();
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try framebuffers.put(wl_shm_pool_id, framebuffer);
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const wl_buffer_id = id_pool.create();
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try conn.send(
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wayland.core.ShmPool.Request,
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@ -249,6 +257,8 @@ pub fn main() !void {
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wayland.core.Surface.Request.commit,
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);
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var window_size: [2]u32 = [2]u32{ @intCast(framebuffer_size[0]), @intCast(framebuffer_size[1]) };
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var running = true;
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while (running) {
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const header, const body = try conn.recv();
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@ -265,6 +275,63 @@ pub fn main() !void {
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} },
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);
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const new_buffer_id = id_pool.create();
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const new_framebuffer = try pool_alloc.alloc(Pixel, window_size[0] * window_size[1]);
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try framebuffers.put(new_buffer_id, new_framebuffer);
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// put some interesting colors into the new_framebuffer
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for (0..window_size[1]) |y| {
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const row = new_framebuffer[y * window_size[0] .. (y + 1) * window_size[0]];
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for (row, 0..window_size[0]) |*pixel, x| {
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pixel.* = .{
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@truncate(x),
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@truncate(y),
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0x00,
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0xFF,
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};
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}
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}
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try conn.send(
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wayland.core.ShmPool.Request,
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wl_shm_pool_id,
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.{ .create_buffer = .{
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.new_id = new_buffer_id,
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.offset = @intCast(@intFromPtr(new_framebuffer.ptr) - @intFromPtr(pool_bytes.ptr)),
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.width = @intCast(window_size[0]),
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.height = @intCast(window_size[1]),
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.stride = @as(i32, @intCast(window_size[0])) * @sizeOf([4]u8),
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.format = .argb8888,
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} },
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);
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try conn.send(
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wayland.core.Surface.Request,
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surface_id,
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.{ .attach = .{
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.buffer = new_buffer_id,
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.x = 0,
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.y = 0,
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} },
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);
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try conn.send(
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wayland.core.Surface.Request,
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surface_id,
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.{ .damage = .{
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.x = 0,
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.y = 0,
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.width = std.math.maxInt(i32),
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.height = std.math.maxInt(i32),
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} },
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);
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try conn.send(
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wayland.core.Surface.Request,
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surface_id,
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wayland.core.Surface.Request.commit,
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);
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// commit the configuration
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try conn.send(
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wayland.core.Surface.Request,
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@ -278,13 +345,14 @@ pub fn main() !void {
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switch (event) {
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.configure => |conf| {
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std.debug.print("<- xdg_toplevel@{} configure <{}, {}> {any}\n", .{ header.object_id, conf.width, conf.height, conf.states });
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window_size = .{
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@intCast(conf.width),
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@intCast(conf.height),
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};
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},
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.close => running = false,
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else => |tag| std.debug.print("<- xdg_toplevel@{} {s} {}\n", .{ header.object_id, @tagName(tag), event }),
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}
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} else if (header.object_id == wl_buffer_id) {
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const event = try wayland.deserialize(wayland.core.Buffer.Event, header, body);
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std.debug.print("<- wl_buffer@{} {}\n", .{ header.object_id, event });
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} else if (header.object_id == xdg_wm_base_id) {
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const event = try wayland.deserialize(wayland.xdg.WmBase.Event, header, body);
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switch (event) {
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@ -316,6 +384,14 @@ pub fn main() !void {
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std.debug.print("<- wl_keyboard@{}\n", .{event});
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},
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}
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} else if (framebuffers.get(header.object_id)) |framebuffer_slice| {
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const event = try wayland.deserialize(wayland.core.Buffer.Event, header, body);
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switch (event) {
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.release => {
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_ = framebuffers.remove(header.object_id);
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pool_alloc.free(framebuffer_slice);
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},
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}
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} else if (header.object_id == DISPLAY_ID) {
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const event = try wayland.deserialize(wayland.core.Display.Event, header, body);
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switch (event) {
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