public static float nk_layout_row_calculate_usable_space(NkStyle style, NkPanelType type, float total_space, int columns)
{
float panel_padding;
float panel_spacing;
float panel_space;
NkVec2 spacing = new NkVec2();
NkVec2 padding = new NkVec2();
spacing = (NkVec2)(style.Window.spacing);
padding = (NkVec2)(nk_panel_get_padding(style, (type)));
panel_padding = (float)(2 * padding.x);
panel_spacing = (float)((float)((columns - 1) < (0) ? (0) : (columns - 1)) * spacing.x);
panel_space = (float)(total_space - panel_padding - panel_spacing);
return((float)(panel_space));
}
/// <summary>
/// User interfaces the piemenu.
/// </summary>
/// <returns>The piemenu.</returns>
/// <param name="ctx">Context.</param>
/// <param name="pos">Position.</param>
/// <param name="radius">Radius.</param>
/// <param name="icons">Icons.</param>
/// <param name="item_count">Item count.</param>
public static int ui_piemenu(NuklearContext ctx, NkVec2 pos, float radius,
NkImage[] icons, int itemCount)
{
var ret = -1;
/* pie menu popup */
var border = ctx.Ctx.Style.Window.border_color;
var background = ctx.Ctx.Style.Window.fixed_background;
ctx.Ctx.Style.Window.fixed_background = Nk.nk_style_item_hide();
ctx.Ctx.Style.Window.border_color = Nk.nk_rgba(0, 0, 0, 0);
var totalSpace = ctx.WindowGetContentRegion();
ctx.Ctx.Style.Window.spacing = Nk.nk_vec2_(0, 0);
ctx.Ctx.Style.Window.padding = Nk.nk_vec2_(0, 0);
if (ctx.PopupBegin(NkPopupType.NK_POPUP_STATIC, "piemenu", PanelFlags.NO_SCROLLBAR,
Nk.nk_rect_(pos.x - totalSpace.x - radius, pos.y - radius - totalSpace.y,
2 * radius, 2 * radius)))
{
var o = ctx.WindowGetCanvas();
var inp = ctx.Ctx.Input;
totalSpace = ctx.WindowGetContentRegion();
ctx.Ctx.Style.Window.spacing = Nk.nk_vec2_(4, 4);
ctx.Ctx.Style.Window.padding = Nk.nk_vec2_(8, 8);
ctx.LayoutRowDynamic(totalSpace.h, 1);
NkRect bounds;
Nk.nk_widget(&bounds, ctx.Ctx);
/* outer circle */
Nk.nk_fill_circle(o, bounds, Nk.nk_rgb(50, 50, 50));
int activeItem;
{
/* circle buttons */
var step = 2 * 3.141592654f / Math.Max(1, itemCount);
float aMin = 0;
var aMax = step;
var center = Nk.nk_vec2_(bounds.x + bounds.w / 2.0f, bounds.y + bounds.h / 2.0f);
var drag = Nk.nk_vec2_(inp.mouse.Pos.x - center.x, inp.mouse.Pos.y - center.y);
var angle = (float)Math.Atan2(drag.y, drag.x);
if (angle < -0.0f)
{
angle += 2.0f * 3.141592654f;
}
activeItem = (int)(angle / step);
int i;
for (i = 0; i < itemCount; ++i)
{
NkRect content;
Nk.nk_fill_arc(o, center.x, center.y, bounds.w / 2.0f,
aMin, aMax, activeItem == i ? Nk.nk_rgb(45, 100, 255) : Nk.nk_rgb(60, 60, 60));
/* separator line */
var rx = bounds.w / 2.0f;
float ry = 0;
var dx = rx * (float)Math.Cos(aMin) - ry * (float)Math.Sin(aMin);
var dy = rx * (float)Math.Sin(aMin) + ry * (float)Math.Cos(aMin);
Nk.nk_stroke_line(o, center.x, center.y,
center.x + dx, center.y + dy, 1.0f, Nk.nk_rgb(50, 50, 50));
/* button content */
var a = aMin + (aMax - aMin) / 2.0f;
rx = bounds.w / 2.5f;
ry = 0;
content.w = 30;
content.h = 30;
content.x = center.x + (rx * (float)Math.Cos(a) - ry * (float)Math.Sin(a) - content.w / 2.0f);
content.y = center.y + (rx * (float)Math.Sin(a) + ry * (float)Math.Cos(a) - content.h / 2.0f);
Nk.nk_draw_image(o, content, icons[i], Nk.nk_rgb(255, 255, 255));
aMin = aMax;
aMax += step;
}
}
{
/* inner circle */
NkRect inner;
inner.x = bounds.x + bounds.w / 2 - bounds.w / 4;
inner.y = bounds.y + bounds.h / 2 - bounds.h / 4;
inner.w = bounds.w / 2;
inner.h = bounds.h / 2;
Nk.nk_fill_circle(o, inner, Nk.nk_rgb(45, 45, 45));
/* active icon content */
bounds.w = inner.w / 2.0f;
bounds.h = inner.h / 2.0f;
bounds.x = inner.x + inner.w / 2 - bounds.w / 2;
bounds.y = inner.y + inner.h / 2 - bounds.h / 2;
Nk.nk_draw_image(o, bounds, icons[activeItem], Nk.nk_rgb(255, 255, 255));
}
ctx.LayoutSpaceEnd();
if (Nk.nk_input_is_mouse_down(ctx.Ctx.Input, NkButtons.RIGHT) == 0)
{
ctx.PopupClose();
ret = activeItem;
}
}
else
{
ret = -2;
}
ctx.Ctx.Style.Window.spacing = Nk.nk_vec2_(4, 4);
ctx.Ctx.Style.Window.padding = Nk.nk_vec2_(8, 8);
ctx.PopupEnd();
ctx.Ctx.Style.Window.fixed_background = background;
ctx.Ctx.Style.Window.border_color = border;
return(ret);
}
public static void basic_demo(NuklearContext ctx, Media media)
{
int i;
ctx.StyleSetFont(media.Font20.Handle);
ctx.Begin("Basic Demo", Nk.nk_rect_(320, 50, 275, 610),
PanelFlags.BORDER | PanelFlags.MOVABLE | PanelFlags.TITLE);
ui_header(ctx, media, "Popup & Scrollbar & Images");
ui_widget(ctx, media, 35);
if (ctx.ButtonImageLabel(media.Dir, "Images", Alignment.MIDDLECENTERED))
{
_imageActive = !_imageActive;
}
ui_header(ctx, media, "Selected Image");
ui_widget_centered(ctx, media, 100);
ctx.Image(media.Images[_selectedImage]);
if (_imageActive)
{
if (ctx.PopupBegin(NkPopupType.NK_POPUP_STATIC, "Image Popup", 0, Nk.nk_rect_(265, 0, 320, 220)))
{
ctx.LayoutRowStatic(82, 82, 3);
for (i = 0; i < 9; ++i)
{
if (ctx.ButtonImage(media.Images[i]))
{
_selectedImage = i;
_imageActive = false;
ctx.PopupClose();
}
}
ctx.PopupEnd();
}
}
ui_header(ctx, media, "Combo box");
ui_widget(ctx, media, 40);
if (ctx.ComboBeginLabel(Items2[_selectedItem1], Nk.nk_vec2_(ctx.WidgetWidth(), 200)))
{
ctx.LayoutRowDynamic(35, 1);
for (i = 0; i < 3; ++i)
{
if (ctx.ComboItemLabel(Items2[i], Alignment.MIDDLELEFT))
{
_selectedItem1 = i;
}
}
ctx.ComboEnd();
}
ui_widget(ctx, media, 40);
if (ctx.ComboBeginImageLabel(Items2[_selectedIcon], media.Images[_selectedIcon],
Nk.nk_vec2_(ctx.WidgetWidth(), 200)))
{
ctx.LayoutRowDynamic(35, 1);
for (i = 0; i < 3; ++i)
{
if (ctx.ComboItemImageLabel(media.Images[i], Items2[i], Alignment.MIDDLERIGHT))
{
_selectedIcon = i;
}
}
ctx.ComboEnd();
}
ui_header(ctx, media, "Checkbox");
ui_widget(ctx, media, 30);
ctx.CheckboxLabel("Flag 1", ref _check0);
ui_widget(ctx, media, 30);
ctx.CheckboxLabel("Flag 2", ref _check1);
ui_header(ctx, media, "Progressbar");
ui_widget(ctx, media, 35);
ctx.Progress(ref _prog, 100, Nk.nk_true);
if (Nk.nk_input_is_mouse_click_down_in_rect(ctx.Ctx.Input, NkButtons.RIGHT,
ctx.WindowGetBounds(), Nk.nk_true) != 0)
{
_piemenuPos = ctx.Ctx.Input.mouse.Pos;
_piemenuActive = true;
}
if (_piemenuActive)
{
var ret = ui_piemenu(ctx, _piemenuPos, 140, media.Menu, 6);
if (ret == -2)
{
_piemenuActive = false;
}
if (ret != -1)
{
Console.Write("piemenu selected: {0}\n", ret);
_piemenuActive = false;
}
}
ctx.StyleSetFont(media.Font14.Handle);
ctx.End();
}
