From 754e24a710d8f7051ead01bfe43a2824a0fa478f Mon Sep 17 00:00:00 2001 From: Leon Henrik Plickat Date: Sat, 13 Jun 2020 02:13:29 +0200 Subject: [PATCH] Output: Rework layout switching in arrangeViews() --- river/Output.zig | 82 +++++++++++++----------------------------------- 1 file changed, 21 insertions(+), 61 deletions(-) diff --git a/river/Output.zig b/river/Output.zig index 73ddae1..4ca3ead 100644 --- a/river/Output.zig +++ b/river/Output.zig @@ -61,8 +61,10 @@ master_count: u32, /// Percentage of the total screen that the master section takes up. master_factor: f64, -/// Current layout of the output. -layout: Layout, +/// Current layout of the output. If it is "full", river will use the full +/// layout. Otherwise river assumes it contains a string which, when executed +/// with sh, will result in a layout. +layout: []const u8, /// List of status tracking objects relaying changes to this output to clients. status_trackers: std.SinglyLinkedList(OutputStatus), @@ -72,41 +74,6 @@ listen_destroy: c.wl_listener, listen_frame: c.wl_listener, listen_mode: c.wl_listener, -// All possible layouts. -pub const Layout = enum { - TopMaster, - RightMaster, - BottomMaster, - LeftMaster, - Full, -}; - -const LayoutName = struct { - name: []const u8, - layout: Layout, -}; - -// zig fmt: off -const layout_names = [_]LayoutName { - .{ .name = "top-master", .layout = Layout.TopMaster, }, - .{ .name = "right-master", .layout = Layout.RightMaster, }, - .{ .name = "bottom-master", .layout = Layout.BottomMaster, }, - .{ .name = "left-master", .layout = Layout.LeftMaster, }, - .{ .name = "full", .layout = Layout.Full, }, -}; -// zig fmt: on - -pub fn getLayoutByName(self: Self, name: []const u8) Layout { - for (layout_names) |current| { - if (std.mem.eql(u8, name, current.name)) { - return current.layout; - } - } - Log.Error.log("Layout '{}' does not exist", .{name}); - // In case of error default to LeftMaster - return Layout.LeftMaster; -} - pub fn init(self: *Self, root: *Root, wlr_output: *c.wlr_output) !void { // Some backends don't have modes. DRM+KMS does, and we need to set a mode // before we can use the output. The mode is a tuple of (width, height, @@ -142,8 +109,7 @@ pub fn init(self: *Self, root: *Root, wlr_output: *c.wlr_output) !void { self.master_factor = 0.6; - // LeftMaster is the default layout for all outputs - self.layout = Layout.LeftMaster; + self.layout = try std.fmt.allocPrint(self.root.server.allocator, "full", .{}); self.status_trackers = std.SinglyLinkedList(OutputStatus).init(); @@ -257,10 +223,8 @@ fn layoutFull(self: *Self, visible_count: u32, output_tags: u32) void { /// and completed. pub fn arrangeViews(self: *Self) void { // If the output has a zero dimension, trying to arrange would cause - // underflow and is pointless anyway - if (self.usable_box.width == 0 or self.usable_box.height == 0) { - return; - } + // an underflow and is pointless anyway. + if (self.usable_box.width == 0 or self.usable_box.height == 0) return; const output_tags = if (self.pending_focused_tags) |tags| tags @@ -271,30 +235,26 @@ pub fn arrangeViews(self: *Self) void { var count: u32 = 0; var it = ViewStack(View).pendingIterator(self.views.first, output_tags); while (it.next()) |node| { - if (node.view.floating) { - continue; - } + if (node.view.floating) continue; count += 1; } break :blk count; }; - // A single view should always use the maximum available space. This is - // implemented via the "full" layout to remove the need of every single - // layout to explicitly handle this edge case or the other edge case of - // no visible views. - if (visible_count <= 1) { - layoutFull(self, visible_count, output_tags); - return; - } + if (visible_count == 0) return; - switch (self.layout) { - .Full => layoutFull(self, visible_count, output_tags), - .TopMaster => layoutTopMaster(self, visible_count, output_tags), - .RightMaster => layoutRightMaster(self, visible_count, output_tags), - .BottomMaster => layoutBottomMaster(self, visible_count, output_tags), - .LeftMaster => layoutLeftMaster(self, visible_count, output_tags), - } + if (std.mem.eql(u8, self.layout, "full")) return layoutFull(self, visible_count, output_tags); + + layoutExternal(self, visible_count, output_tags) catch |err| { + switch (err) { + LayoutError.BadExitCode => Log.Error.log("Layout command exited with non-zero return code.", .{}), + LayoutError.BadWindowConfiguration => Log.Error.log("Invalid window configuration.", .{}), + LayoutError.ConfigurationMismatch => Log.Error.log("Mismatch between amount of window configurations and visible windows.", .{}), + else => Log.Error.log("Encountered unexpected error while trying to use external layout.", .{}), + } + Log.Error.log("Falling back to internal layout", .{}); + layoutFull(self, visible_count, output_tags); + }; } /// Arrange all layer surfaces of this output and addjust the usable aread