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/*
* Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace ElmSharp
{
/// <summary>
/// The Box is a container used to arranges UI components in a linear order.
/// </summary>
public class Box : Container
{
private Interop.Elementary.BoxLayoutCallback _layoutCallback;
/// <summary>
/// Creates and initializes a new instance of the Box class.
/// </summary>
/// <param name="parent">The EvasObject to which the new Box will be attached as a child.</param>
public Box(EvasObject parent) : base(parent)
{
}
/// <summary>
/// Sets or gets IsHorizontal value which describe pack direction, vertical is default.
/// </summary>
public bool IsHorizontal
{
get
{
return Interop.Elementary.elm_box_horizontal_get(RealHandle);
}
set
{
Interop.Elementary.elm_box_horizontal_set(RealHandle, value);
}
}
/// <summary>
/// Sets or gets whether the box to arrange its children homogeneously.
/// </summary>
public bool IsHomogeneous
{
get
{
return Interop.Elementary.elm_box_homogeneous_get(RealHandle);
}
set
{
Interop.Elementary.elm_box_homogeneous_set(RealHandle, value);
}
}
/// <summary>
/// Adds an object at the end of the pack list.
/// </summary>
/// <remarks>
/// Packs "content" object into the Box, placing it last in the list of children objects.
/// The actual position the object will get on screen depends on the layout used.
/// If no custom layout is set, it will be at the bottom or right,
/// depending if the Box is vertical or horizontal, respectively.
/// </remarks>
/// <param name="content">The oject be packed</param>
public void PackEnd(EvasObject content)
{
Interop.Elementary.elm_box_pack_end(RealHandle, content);
AddChild(content);
}
/// <summary>
/// Adds an "content" object to the beginning of the pack list.
/// </summary>
/// <remarks>
/// Pack "content" object into the Box obj, placing it first in the list of children objects.
/// The actual position the object will get on screen depends on the layout used.
/// If no custom layout is set, it will be at the top or left,
/// depending if the Box is vertical or horizontal, respectively.
/// </remarks>
/// <param name="content">The object to be packed.</param>
public void PackStart(EvasObject content)
{
Interop.Elementary.elm_box_pack_start(RealHandle, content);
AddChild(content);
}
/// <summary>
/// Adds an "content "object to the Box after the "after" object.
/// </summary>
/// <remarks>
/// This will add the "content" to the Box indicated after the object indicated with "after".
/// If "after" is not already in the Box, results are undefined.
/// After means either to the right of the "after" object or below it depending on orientation.
/// </remarks>
/// <param name="content">The object will be added in Box</param>
/// <param name="after">The object has been added in Box</param>
public void PackAfter(EvasObject content, EvasObject after)
{
Interop.Elementary.elm_box_pack_after(RealHandle, content, after);
AddChild(content);
}
/// <summary>
/// Adds an "content "object to the Box before the "before" object.
/// </summary>
/// <remarks>
/// This will add the "content" to the Box indicated before the object indicated with "before".
/// If "before" is not already in the Box, results are undefined.
/// before means either to the left of the "before" object or below it depending on orientation.
/// </remarks>
/// <param name="content">The object will be added in Box</param>
/// <param name="before">The object has been added in Box</param>
public void PackBefore(EvasObject content, EvasObject before)
{
Interop.Elementary.elm_box_pack_before(RealHandle, content, before);
AddChild(content);
}
/// <summary>
/// Remove the "content" oject from Box without deleting it.
/// </summary>
/// <param name="content">The object to unpack</param>
public void UnPack(EvasObject content)
{
Interop.Elementary.elm_box_unpack(RealHandle, content);
RemoveChild(content);
}
/// <summary>
/// Removes all objects from Box container.
/// </summary>
public void UnPackAll()
{
Interop.Elementary.elm_box_unpack_all(RealHandle);
ClearChildren();
}
/// <summary>
/// Whenever anything changes that requires the Box in obj to recalculate the size and position of its elements,
/// the function cb will be called to determine what the layout of the children will be.
/// </summary>
/// <param name="action">The callback function used for layout </param>
public void SetLayoutCallback(Action action)
{
_layoutCallback = (obj, priv, data) =>
{
action();
};
Interop.Elementary.elm_box_layout_set(RealHandle, _layoutCallback, IntPtr.Zero, null);
}
/// <summary>
/// Sets the color of exact part to Box's layout parent.
/// </summary>
/// <param name="part">The name of part class, it could be 'bg', 'elm.swllow.content'.</param>
/// <param name="color">The color value.</param>
public override void SetPartColor(string part, Color color)
{
Interop.Elementary.elm_object_color_class_color_set(Handle, part, color.R * color.A / 255,
color.G * color.A / 255,
color.B * color.A / 255,
color.A);
}
/// <summary>
/// Gets the color of exact part of Box's layout parent.
/// </summary>
/// <param name="part">The name of part class, it could be 'bg', 'elm.swllow.content'.</param>
/// <returns></returns>
public override Color GetPartColor(string part)
{
int r, g, b, a;
Interop.Elementary.elm_object_color_class_color_get(Handle, part, out r, out g, out b, out a);
return new Color((int)(r / (a / 255.0)), (int)(g / (a / 255.0)), (int)(b / (a / 255.0)), a);
}
/// <summary>
/// Force the box to recalculate its children packing.
/// If any children was added or removed, box will not calculate the values immediately rather leaving it to the next main loop iteration.
/// While this is great as it would save lots of recalculation, whenever you need to get the position of a just added item you must force recalculate before doing so.
/// </summary>
public void Recalculate()
{
Interop.Elementary.elm_box_recalculate(RealHandle);
}
/// <summary>
/// Clear the box of all children.
/// Remove all the elements contained by the box, deleting the respective objects.
/// </summary>
public void Clear()
{
Interop.Elementary.elm_box_clear(RealHandle);
ClearChildren();
}
/// <summary>
/// Sets or gets the alignment of the whole bounding box of contents.
/// </summary>
/// <param name="horizontal">Horizontal alignment</param>
/// <param name="vertical">Vertical alignment</param>
public void SetBoxAlignment(double horizontal, double vertical)
{
Interop.Elementary.elm_box_align_set(RealHandle, horizontal, vertical);
}
/// <summary>
/// Sets or gets the space(padding) between the box's elements.
/// </summary>
/// <param name="horizontal">Horizontal padding</param>
/// <param name="vertical">vertical padding</param>
public void SetPadding(int horizontal, int vertical)
{
Interop.Elementary.elm_box_padding_set(RealHandle, horizontal, vertical);
}
protected override IntPtr CreateHandle(EvasObject parent)
{
IntPtr handle = Interop.Elementary.elm_layout_add(parent.Handle);
Interop.Elementary.elm_layout_theme_set(handle, "layout", "background", "default");
RealHandle = Interop.Elementary.elm_box_add(handle);
Interop.Elementary.elm_object_part_content_set(handle, "elm.swallow.content", RealHandle);
return handle;
}
}
}
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