// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use gdk;
use glib::object::Cast;
use glib::object::IsA;
use glib::translate::*;
use glib::StaticType;
use glib::ToValue;
use gtk_sys;
use std::fmt;
use Align;
use Buildable;
use Container;
use Widget;

glib_wrapper! {
    /// The `DrawingArea` widget is used for creating custom user interface
    /// elements. It’s essentially a blank widget; you can draw on it. After
    /// creating a drawing area, the application may want to connect to:
    ///
    /// - Mouse and button press signals to respond to input from
    ///  the user. (Use `Widget::add_events` to enable events
    ///  you wish to receive.)
    ///
    /// - The `Widget::realize` signal to take any necessary actions
    ///  when the widget is instantiated on a particular display.
    ///  (Create GDK resources in response to this signal.)
    ///
    /// - The `Widget::size-allocate` signal to take any necessary
    ///  actions when the widget changes size.
    ///
    /// - The `Widget::draw` signal to handle redrawing the
    ///  contents of the widget.
    ///
    /// The following code portion demonstrates using a drawing
    /// area to display a circle in the normal widget foreground
    /// color.
    ///
    /// Note that GDK automatically clears the exposed area before sending
    /// the expose event, and that drawing is implicitly clipped to the exposed
    /// area. If you want to have a theme-provided background, you need
    /// to call `gtk_render_background` in your ::draw method.
    ///
    /// ## Simple `DrawingArea` usage
    ///
    ///
    /// ```C
    /// gboolean
    /// draw_callback (GtkWidget *widget, cairo_t *cr, gpointer data)
    /// {
    ///   guint width, height;
    ///   GdkRGBA color;
    ///   GtkStyleContext *context;
    ///
    ///   context = gtk_widget_get_style_context (widget);
    ///
    ///   width = gtk_widget_get_allocated_width (widget);
    ///   height = gtk_widget_get_allocated_height (widget);
    ///
    ///   gtk_render_background (context, cr, 0, 0, width, height);
    ///
    ///   cairo_arc (cr,
    ///              width / 2.0, height / 2.0,
    ///              MIN (width, height) / 2.0,
    ///              0, 2 * G_PI);
    ///
    ///   gtk_style_context_get_color (context,
    ///                                gtk_style_context_get_state (context),
    ///                                &color);
    ///   gdk_cairo_set_source_rgba (cr, &color);
    ///
    ///   cairo_fill (cr);
    ///
    ///  return FALSE;
    /// }
    /// [...]
    ///   GtkWidget *drawing_area = gtk_drawing_area_new ();
    ///   gtk_widget_set_size_request (drawing_area, 100, 100);
    ///   g_signal_connect (G_OBJECT (drawing_area), "draw",
    ///                     G_CALLBACK (draw_callback), NULL);
    /// ```
    ///
    /// Draw signals are normally delivered when a drawing area first comes
    /// onscreen, or when it’s covered by another window and then uncovered.
    /// You can also force an expose event by adding to the “damage region”
    /// of the drawing area’s window; `WidgetExt::queue_draw_area` and
    /// `gdk::WindowExt::invalidate_rect` are equally good ways to do this.
    /// You’ll then get a draw signal for the invalid region.
    ///
    /// The available routines for drawing are documented on the
    /// [GDK Drawing Primitives][gdk3-Cairo-Interaction] page
    /// and the cairo documentation.
    ///
    /// To receive mouse events on a drawing area, you will need to enable
    /// them with `Widget::add_events`. To receive keyboard events, you
    /// will need to set the “can-focus” property on the drawing area, and you
    /// should probably draw some user-visible indication that the drawing
    /// area is focused. Use `WidgetExt::has_focus` in your expose event
    /// handler to decide whether to draw the focus indicator. See
    /// `gtk_render_focus` for one way to draw focus.
    ///
    /// # Implements
    ///
    /// [`WidgetExt`](trait.WidgetExt.html), [`glib::object::ObjectExt`](../glib/object/trait.ObjectExt.html), [`BuildableExt`](trait.BuildableExt.html), [`WidgetExtManual`](prelude/trait.WidgetExtManual.html), [`BuildableExtManual`](prelude/trait.BuildableExtManual.html)
    pub struct DrawingArea(Object<gtk_sys::GtkDrawingArea, gtk_sys::GtkDrawingAreaClass, DrawingAreaClass>) @extends Widget, @implements Buildable;

    match fn {
        get_type => || gtk_sys::gtk_drawing_area_get_type(),
    }
}

impl DrawingArea {
    /// Creates a new drawing area.
    ///
    /// # Returns
    ///
    /// a new `DrawingArea`
    pub fn new() -> DrawingArea {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(gtk_sys::gtk_drawing_area_new()).unsafe_cast() }
    }
}

impl Default for DrawingArea {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Clone, Default)]
pub struct DrawingAreaBuilder {
    app_paintable: Option<bool>,
    can_default: Option<bool>,
    can_focus: Option<bool>,
    events: Option<gdk::EventMask>,
    expand: Option<bool>,
    #[cfg(any(feature = "v3_20", feature = "dox"))]
    focus_on_click: Option<bool>,
    halign: Option<Align>,
    has_default: Option<bool>,
    has_focus: Option<bool>,
    has_tooltip: Option<bool>,
    height_request: Option<i32>,
    hexpand: Option<bool>,
    hexpand_set: Option<bool>,
    is_focus: Option<bool>,
    margin: Option<i32>,
    margin_bottom: Option<i32>,
    margin_end: Option<i32>,
    margin_start: Option<i32>,
    margin_top: Option<i32>,
    name: Option<String>,
    no_show_all: Option<bool>,
    opacity: Option<f64>,
    parent: Option<Container>,
    receives_default: Option<bool>,
    sensitive: Option<bool>,
    tooltip_markup: Option<String>,
    tooltip_text: Option<String>,
    valign: Option<Align>,
    vexpand: Option<bool>,
    vexpand_set: Option<bool>,
    visible: Option<bool>,
    width_request: Option<i32>,
}

impl DrawingAreaBuilder {
    pub fn new() -> Self {
        Self::default()
    }

    pub fn build(self) -> DrawingArea {
        let mut properties: Vec<(&str, &dyn ToValue)> = vec![];
        if let Some(ref app_paintable) = self.app_paintable {
            properties.push(("app-paintable", app_paintable));
        }
        if let Some(ref can_default) = self.can_default {
            properties.push(("can-default", can_default));
        }
        if let Some(ref can_focus) = self.can_focus {
            properties.push(("can-focus", can_focus));
        }
        if let Some(ref events) = self.events {
            properties.push(("events", events));
        }
        if let Some(ref expand) = self.expand {
            properties.push(("expand", expand));
        }
        #[cfg(any(feature = "v3_20", feature = "dox"))]
        {
            if let Some(ref focus_on_click) = self.focus_on_click {
                properties.push(("focus-on-click", focus_on_click));
            }
        }
        if let Some(ref halign) = self.halign {
            properties.push(("halign", halign));
        }
        if let Some(ref has_default) = self.has_default {
            properties.push(("has-default", has_default));
        }
        if let Some(ref has_focus) = self.has_focus {
            properties.push(("has-focus", has_focus));
        }
        if let Some(ref has_tooltip) = self.has_tooltip {
            properties.push(("has-tooltip", has_tooltip));
        }
        if let Some(ref height_request) = self.height_request {
            properties.push(("height-request", height_request));
        }
        if let Some(ref hexpand) = self.hexpand {
            properties.push(("hexpand", hexpand));
        }
        if let Some(ref hexpand_set) = self.hexpand_set {
            properties.push(("hexpand-set", hexpand_set));
        }
        if let Some(ref is_focus) = self.is_focus {
            properties.push(("is-focus", is_focus));
        }
        if let Some(ref margin) = self.margin {
            properties.push(("margin", margin));
        }
        if let Some(ref margin_bottom) = self.margin_bottom {
            properties.push(("margin-bottom", margin_bottom));
        }
        if let Some(ref margin_end) = self.margin_end {
            properties.push(("margin-end", margin_end));
        }
        if let Some(ref margin_start) = self.margin_start {
            properties.push(("margin-start", margin_start));
        }
        if let Some(ref margin_top) = self.margin_top {
            properties.push(("margin-top", margin_top));
        }
        if let Some(ref name) = self.name {
            properties.push(("name", name));
        }
        if let Some(ref no_show_all) = self.no_show_all {
            properties.push(("no-show-all", no_show_all));
        }
        if let Some(ref opacity) = self.opacity {
            properties.push(("opacity", opacity));
        }
        if let Some(ref parent) = self.parent {
            properties.push(("parent", parent));
        }
        if let Some(ref receives_default) = self.receives_default {
            properties.push(("receives-default", receives_default));
        }
        if let Some(ref sensitive) = self.sensitive {
            properties.push(("sensitive", sensitive));
        }
        if let Some(ref tooltip_markup) = self.tooltip_markup {
            properties.push(("tooltip-markup", tooltip_markup));
        }
        if let Some(ref tooltip_text) = self.tooltip_text {
            properties.push(("tooltip-text", tooltip_text));
        }
        if let Some(ref valign) = self.valign {
            properties.push(("valign", valign));
        }
        if let Some(ref vexpand) = self.vexpand {
            properties.push(("vexpand", vexpand));
        }
        if let Some(ref vexpand_set) = self.vexpand_set {
            properties.push(("vexpand-set", vexpand_set));
        }
        if let Some(ref visible) = self.visible {
            properties.push(("visible", visible));
        }
        if let Some(ref width_request) = self.width_request {
            properties.push(("width-request", width_request));
        }
        let ret = glib::Object::new(DrawingArea::static_type(), &properties)
            .expect("object new")
            .downcast::<DrawingArea>()
            .expect("downcast");
        ret
    }

    pub fn app_paintable(mut self, app_paintable: bool) -> Self {
        self.app_paintable = Some(app_paintable);
        self
    }

    pub fn can_default(mut self, can_default: bool) -> Self {
        self.can_default = Some(can_default);
        self
    }

    pub fn can_focus(mut self, can_focus: bool) -> Self {
        self.can_focus = Some(can_focus);
        self
    }

    pub fn events(mut self, events: gdk::EventMask) -> Self {
        self.events = Some(events);
        self
    }

    pub fn expand(mut self, expand: bool) -> Self {
        self.expand = Some(expand);
        self
    }

    #[cfg(any(feature = "v3_20", feature = "dox"))]
    pub fn focus_on_click(mut self, focus_on_click: bool) -> Self {
        self.focus_on_click = Some(focus_on_click);
        self
    }

    pub fn halign(mut self, halign: Align) -> Self {
        self.halign = Some(halign);
        self
    }

    pub fn has_default(mut self, has_default: bool) -> Self {
        self.has_default = Some(has_default);
        self
    }

    pub fn has_focus(mut self, has_focus: bool) -> Self {
        self.has_focus = Some(has_focus);
        self
    }

    pub fn has_tooltip(mut self, has_tooltip: bool) -> Self {
        self.has_tooltip = Some(has_tooltip);
        self
    }

    pub fn height_request(mut self, height_request: i32) -> Self {
        self.height_request = Some(height_request);
        self
    }

    pub fn hexpand(mut self, hexpand: bool) -> Self {
        self.hexpand = Some(hexpand);
        self
    }

    pub fn hexpand_set(mut self, hexpand_set: bool) -> Self {
        self.hexpand_set = Some(hexpand_set);
        self
    }

    pub fn is_focus(mut self, is_focus: bool) -> Self {
        self.is_focus = Some(is_focus);
        self
    }

    pub fn margin(mut self, margin: i32) -> Self {
        self.margin = Some(margin);
        self
    }

    pub fn margin_bottom(mut self, margin_bottom: i32) -> Self {
        self.margin_bottom = Some(margin_bottom);
        self
    }

    pub fn margin_end(mut self, margin_end: i32) -> Self {
        self.margin_end = Some(margin_end);
        self
    }

    pub fn margin_start(mut self, margin_start: i32) -> Self {
        self.margin_start = Some(margin_start);
        self
    }

    pub fn margin_top(mut self, margin_top: i32) -> Self {
        self.margin_top = Some(margin_top);
        self
    }

    pub fn name(mut self, name: &str) -> Self {
        self.name = Some(name.to_string());
        self
    }

    pub fn no_show_all(mut self, no_show_all: bool) -> Self {
        self.no_show_all = Some(no_show_all);
        self
    }

    pub fn opacity(mut self, opacity: f64) -> Self {
        self.opacity = Some(opacity);
        self
    }

    pub fn parent<P: IsA<Container>>(mut self, parent: &P) -> Self {
        self.parent = Some(parent.clone().upcast());
        self
    }

    pub fn receives_default(mut self, receives_default: bool) -> Self {
        self.receives_default = Some(receives_default);
        self
    }

    pub fn sensitive(mut self, sensitive: bool) -> Self {
        self.sensitive = Some(sensitive);
        self
    }

    pub fn tooltip_markup(mut self, tooltip_markup: &str) -> Self {
        self.tooltip_markup = Some(tooltip_markup.to_string());
        self
    }

    pub fn tooltip_text(mut self, tooltip_text: &str) -> Self {
        self.tooltip_text = Some(tooltip_text.to_string());
        self
    }

    pub fn valign(mut self, valign: Align) -> Self {
        self.valign = Some(valign);
        self
    }

    pub fn vexpand(mut self, vexpand: bool) -> Self {
        self.vexpand = Some(vexpand);
        self
    }

    pub fn vexpand_set(mut self, vexpand_set: bool) -> Self {
        self.vexpand_set = Some(vexpand_set);
        self
    }

    pub fn visible(mut self, visible: bool) -> Self {
        self.visible = Some(visible);
        self
    }

    pub fn width_request(mut self, width_request: i32) -> Self {
        self.width_request = Some(width_request);
        self
    }
}

pub const NONE_DRAWING_AREA: Option<&DrawingArea> = None;

impl fmt::Display for DrawingArea {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "DrawingArea")
    }
}