main.swift

import CCairo

class Surface {
    private let surface: COpaquePointer
    private let cr: COpaquePointer
    init(format: cairo_format_t, width: Int, height: Int) {
        self.surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 240, 80)
        self.cr = cairo_create(surface)
    }
    func writeToPNG(filename: String) {
        cairo_surface_write_to_png(surface, filename)
    }
    func setFontFace(name: String, slant: cairo_font_slant_t = CAIRO_FONT_SLANT_NORMAL, weight: cairo_font_weight_t = CAIRO_FONT_WEIGHT_NORMAL) {
        cairo_select_font_face(cr, name, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD)
    }
    func setFontSize(size: Double) {
        cairo_set_font_size(cr, size)
    }
    func setSourceRGB(r: Double, g: Double, b: Double) {
        cairo_set_source_rgb(cr, r, g, b)
    }
    func moveTo(x x: Double, y: Double) {
        cairo_move_to(cr, x, y)
    }
    func showText(text: String) {
        cairo_show_text(cr, text)
    }
    deinit {
        cairo_destroy(cr)
        cairo_surface_destroy(surface)
    }
}

let surface = Surface(format: CAIRO_FORMAT_ARGB32, width: 240, height: 80)
surface.setFontFace("serif", weight: CAIRO_FONT_WEIGHT_BOLD)
surface.setFontSize(32.0)
surface.setSourceRGB(0.0, g: 0.0, b: 1.0)
surface.moveTo(x: 10, y: 50)
surface.showText("Hello, World!")
surface.writeToPNG("hello.png")