// Правая панель: контент документа (холст) или заглушка «Нет документа».
const std = @import("std");
const dvui = @import("dvui");
const WindowContext = @import("../WindowContext.zig");
const canvas_view = @import("canvas_view.zig");

pub fn rightPanel(ctx: *WindowContext) void {
    const fill_color = dvui.Color.black.opacity(0.25);
    var panel = dvui.box(
        @src(),
        .{ .dir = .vertical },
        .{
            .expand = .both,
            .background = true,
            .padding = dvui.Rect.all(5),
            .corner_radius = dvui.Rect.all(24),
            .color_fill = fill_color,
        },
    );
    {
        const active_doc = ctx.activeDocument();
        if (active_doc) |doc| {
            const content_rect_scale = panel.data().contentRectScale();
            canvas_view.canvasView(&doc.canvas, content_rect_scale);
        } else {
            noDocView(ctx);
        }
    }
    panel.deinit();
}

fn noDocView(ctx: *WindowContext) void {
    var center = dvui.box(
        @src(),
        .{ .dir = .vertical },
        .{ .expand = .both, .padding = dvui.Rect.all(20) },
    );
    {
        dvui.label(@src(), "No document open", .{}, .{});
        if (dvui.button(@src(), "New document", .{}, .{})) {
            ctx.addNewDocument() catch |err| {
                std.debug.print("addNewDocument error: {}\n", .{err});
            };
        }
    }
    center.deinit();
}