public void NewFrame(GUIContext g)
{
// Handle user moving window (at the beginning of the frame to avoid input lag or sheering). Only valid for root windows.
if (this.MovedWindowMoveId != 0 && this.MovedWindowMoveId == g.ActiveId)
{
g.KeepAliveID(this.MovedWindowMoveId);
Debug.Assert(this.MovedWindow != null && this.MovedWindow.RootWindow != null);
Debug.Assert(this.MovedWindow.RootWindow.MoveID == this.MovedWindowMoveId);
if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
if (!this.MovedWindow.Flags.HaveFlag(WindowFlags.NoMove))
{
this.MovedWindow.Position += Mouse.Instance.MouseDelta;
}
this.FocusWindow(this.MovedWindow);
}
else
{
g.SetActiveID(0);
this.MovedWindow = null;
this.MovedWindowMoveId = 0;
}
}
else
{
this.MovedWindow = null;
this.MovedWindowMoveId = 0;
}
// Find the window we are hovering. Child windows can extend beyond the limit of their parent so we need to derive HoveredRootWindow from HoveredWindow
this.HoveredWindow = this.MovedWindow ?? this.FindHoveredWindow(Mouse.Instance.Position, false);
if (this.HoveredWindow != null && (this.HoveredWindow.Flags.HaveFlag(WindowFlags.ChildWindow)))
{
this.HoveredRootWindow = this.HoveredWindow.RootWindow;
}
else
{
this.HoveredRootWindow = (this.MovedWindow != null) ? this.MovedWindow.RootWindow : this.FindHoveredWindow(Mouse.Instance.Position, true);
}
// Scale & Scrolling
if (this.HoveredWindow != null && Mouse.Instance.MouseWheel != 0.0 && !this.HoveredWindow.Collapsed)
{
Window window = this.HoveredWindow;
if (Keyboard.Instance.KeyDown(Key.LeftControl))
{
//Scale
//TODO
}
else
{
// Scroll
if (!(window.Flags.HaveFlag(WindowFlags.NoScrollWithMouse)))
{
var newScrollY = window.Scroll.Y - Math.Sign(Mouse.Instance.MouseWheel) * 20 /*scroll step*/;
float window_rounding = (float)window.WindowContainer.RuleSet.Get <double>(GUIStyleName.WindowRounding);
double resize_corner_size = Math.Max(window.WindowContainer.RuleSet.FontSize * 1.35, window_rounding + 1.0 + window.WindowContainer.RuleSet.FontSize * 0.2);
var contentSize = window.ContentRect.Size;
var vH = window.Rect.Height - window.TitleBarHeight - window.WindowContainer.RuleSet.BorderVertical - window.WindowContainer.RuleSet.PaddingVertical;
var cH = contentSize.Height;
if (cH > vH)
{
newScrollY = MathEx.Clamp(newScrollY, 0, cH - vH);
window.SetWindowScrollY(newScrollY);
}
}
}
}
// Mark all windows as not visible
for (int i = 0; i != this.Windows.Count; i++)
{
Window window = this.Windows[i];
window.WasActive = window.Active;
window.Active = false;
window.Accessed = false;
}
// No window should be open at the beginning of the frame.
// But in order to allow the user to call NewFrame() multiple times without calling Render(), we are doing an explicit clear.
this.WindowStack.Clear();
}
public static bool Begin(string name, ref bool open, Point position, Size size, double bg_alpha = 1, WindowFlags flags = WindowFlags.VerticalScrollbar)
{
if (bg_alpha < 0.0f)
{
throw new ArgumentOutOfRangeException(nameof(bg_alpha), nameof(bg_alpha) + " cannot be negative.");
}
Form form = Form.current;
GUIContext g = form.uiContext;
WindowManager w = g.WindowManager;
Debug.Assert(name != null); // Window name required
Debug.Assert(g.Initialized); // Forgot to call NewFrame()
Debug.Assert(g.FrameCountEnded != g.FrameCount); // Called Render() or EndFrame() and haven't called NewFrame() again yet
if (flags.HaveFlag(WindowFlags.NoInputs))
{
flags |= WindowFlags.NoMove | WindowFlags.NoResize;
}
// Find or create
Window window = w.FindWindowByName(name) ?? w.CreateWindow(name, position, size, flags);
// Check if this is the first call of Begin
long current_frame = g.FrameCount;
bool first_begin_of_the_frame = (window.LastActiveFrame != current_frame);
if (first_begin_of_the_frame)
{
window.Flags = flags;
}
else
{
flags = window.Flags;
}
// Add to stack
Window parent_window = w.WindowStack.Count != 0 ? w.WindowStack[w.WindowStack.Count - 1] : null;
w.WindowStack.Add(window);
w.CurrentWindow = window;
Debug.Assert(parent_window != null || !flags.HaveFlag(WindowFlags.ChildWindow));
// Update known root window (if we are a child window, otherwise window == window->RootWindow)
int root_idx;
for (root_idx = w.WindowStack.Count - 1; root_idx > 0; root_idx--)
{
if (!(w.WindowStack[root_idx].Flags.HaveFlag(WindowFlags.ChildWindow)))
{
break;
}
}
window.RootWindow = w.WindowStack[root_idx];
// When reusing window again multiple times a frame, just append content (don't need to setup again)
if (first_begin_of_the_frame)
{
window.FirstUpdate(name, size, ref open, bg_alpha, flags, current_frame, parent_window);
}
// Inner clipping rectangle
{
// We set this up after processing the resize grip so that our clip rectangle doesn't lag by a frame
// Note that if our window is collapsed we will end up with a null clipping rectangle which is the correct behavior.
Rect title_bar_rect = window.TitleBarRect;
const float border_size = 0;
var paddingHorizontal = window.WindowContainer.RuleSet.PaddingHorizontal;
// Force round to ensure that e.g. (int)(max.x-min.x) in user's render code produce correct result.
Rect clip_rect = new Rect(
new Point(Math.Floor(0.5f + title_bar_rect.Min.X + Math.Max(border_size, Math.Floor(paddingHorizontal * 0.5f))),
Math.Floor(0.5f + title_bar_rect.Max.Y + border_size)),
new Point(Math.Floor(0.5f + window.Position.X + window.Size.Width - Math.Max(border_size, Math.Floor(paddingHorizontal * 0.5f))),
Math.Floor(0.5f + window.Position.Y + window.Size.Height - border_size)));
window.ClipRect = clip_rect;
//window.DrawList.AddRect(window.ClipRect.TopLeft, window.ClipRect.BottomRight, Color.Red);//test only
}
// Clear 'accessed' flag last thing
if (first_begin_of_the_frame)
{
window.Accessed = false;
}
window.BeginCount++;
// Child window can be out of sight and have "negative" clip windows.
// Mark them as collapsed so commands are skipped earlier (we can't manually collapse because they have no title bar).
if (flags.HaveFlag(WindowFlags.ChildWindow))
{
Debug.Assert(flags.HaveFlag(WindowFlags.NoTitleBar));
window.Collapsed = parent_window != null && parent_window.Collapsed;
}
// Return false if we don't intend to display anything to allow user to perform an early out optimization
window.SkipItems = window.Collapsed || !window.Active;
window.RenderTree.CurrentContainer = window.ClientAreaNode;
return(!window.SkipItems);
}
internal static void NewFrame()
{
GUIContext g = Application.ImGuiContext;
WindowManager w = g.WindowManager;
if (!g.Initialized)
{
// Initialize on first frame
g.Initialized = true;
}
g.ConfigFlagsLastFrame = g.ConfigFlagsCurrFrame;
g.ConfigFlagsCurrFrame = IO.ConfigFlags;
// Time
g.DeltaTime = Time.deltaTime;
g.Time += g.DeltaTime;
g.FrameCount++;
Metrics.ActiveWindows = 0;
//fps
var detlaTime = g.Time - g.lastFPSUpdateTime;
g.lastFrameCount++;
if (detlaTime > 1000)
{
g.fps = (int)g.lastFrameCount;
g.lastFrameCount = 0;
g.lastFPSUpdateTime = g.Time;
}
UpdateViewportsNewFrame();
#region Input
//TODO move to Mouse
#region mouse position
if (Mouse.Instance.Position.X < 0 && Mouse.Instance.Position.Y < 0)
{
Mouse.Instance.Position = new Point(-9999.0f, -9999.0f);
}
if ((Mouse.Instance.Position.X < 0 && Mouse.Instance.Position.Y < 0) || (Mouse.Instance.LastPosition.X < 0 && Mouse.Instance.LastPosition.Y < 0)) // if mouse just appeared or disappeared (negative coordinate) we cancel out movement in MouseDelta
{
Mouse.Instance.MouseDelta = Vector.Zero;
}
else
{
Mouse.Instance.MouseDelta = Mouse.Instance.Position - Mouse.Instance.LastPosition;
}
Mouse.Instance.LastPosition = Mouse.Instance.Position;
#endregion
#region mouse left button
Mouse.Instance.LeftButtonPressed = Mouse.Instance.LeftButtonState == KeyState.Down && Mouse.Instance.LeftButtonDownDuration < 0;
Mouse.Instance.LeftButtonReleased = Mouse.Instance.LeftButtonState == KeyState.Up && Mouse.Instance.LeftButtonDownDuration >= 0;
Mouse.Instance.LeftButtonDownDurationPrev = Mouse.Instance.LeftButtonDownDuration;
Mouse.Instance.LeftButtonDownDuration = Mouse.Instance.LeftButtonState == KeyState.Down ? (Mouse.Instance.LeftButtonDownDuration < 0 ? 0 : Mouse.Instance.LeftButtonDownDuration + g.DeltaTime) : -1;
Mouse.Instance.LeftButtonDoubleClicked = false;
if (Mouse.Instance.LeftButtonPressed)
{
if (g.Time - Mouse.Instance.LeftButtonClickedTime < Mouse.DoubleClickIntervalTimeSpan)
{
if ((Mouse.Instance.Position - Mouse.Instance.LeftButtonPressedPosition).LengthSquared < Mouse.DoubleClickMaxDistance * Mouse.DoubleClickMaxDistance)
{
Mouse.Instance.LeftButtonDoubleClicked = true;
}
Mouse.Instance.LeftButtonClickedTime = -99999; // so the third click isn't turned into a double-click
}
else
{
Mouse.Instance.LeftButtonClickedTime = g.Time;
}
Mouse.Instance.LeftButtonPressedPosition = Mouse.Instance.Position;
Mouse.Instance.DragMaxDistanceSquared = 0;
}
else if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
Mouse.Instance.DragMaxDistanceSquared = Math.Max(Mouse.Instance.DragMaxDistanceSquared, (Mouse.Instance.Position - Mouse.Instance.LeftButtonPressedPosition).LengthSquared);
}
if (Mouse.Instance.LeftButtonPressed)
{
++Mouse.Instance.LeftButtonPressedTimes;
}
if (Mouse.Instance.LeftButtonReleased)
{
++Mouse.Instance.LeftButtonReleasedTimes;
}
if (Mouse.Instance.LeftButtonDoubleClicked)
{
++Mouse.Instance.LeftButtonDoubleClickedTimes;
}
#endregion
#region mouse right button
Mouse.Instance.RightButtonPressed = Mouse.Instance.RightButtonState == KeyState.Down && Mouse.Instance.RightButtonDownDuration < 0;
Mouse.Instance.RightButtonReleased = Mouse.Instance.RightButtonState == KeyState.Up && Mouse.Instance.RightButtonDownDuration >= 0;
Mouse.Instance.RightButtonDownDuration = Mouse.Instance.RightButtonState == KeyState.Down ? (Mouse.Instance.RightButtonDownDuration < 0 ? 0 : Mouse.Instance.RightButtonDownDuration + g.DeltaTime) : -1;
if (Mouse.Instance.RightButtonPressed)
{
++Mouse.Instance.RightButtonPressedTimes;
}
if (Mouse.Instance.RightButtonReleased)
{
++Mouse.Instance.RightButtonReleasedTimes;
}
#endregion
#endregion
// Update HoverId data
// 1. record data related to previous frame
// 2. reset
g.HoverId = 0;
g.HoverIdAllowOverlap = false;
g.HoveredIdPreviousFrame = g.HoverId;
// Update ActiveId data
// 1. record data related to previous frame
// 2. reset
if (g.ActiveIdIsAlive != g.ActiveId && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
{//Clear reference to active widget if the widget isn't alive anymore
g.SetActiveID(0, null);
}
g.ActiveIdPreviousFrame = g.ActiveId;
g.ActiveIdIsAlive = 0;
g.ActiveIdPreviousFrameIsAlive = false;
g.ActiveIdIsJustActivated = false;
w.NewFrame(g);
foreach (var form in w.Viewports)
{
if (!form.PlatformWindowCreated)
{
continue;
}
form.ForeBackGroundRenderOpen();
}
// [DEBUG] Item picker tool - start with DebugStartItemPicker()
// useful to visually select an item and break into its call-stack.
UpdateDebugToolItemPicker();
// Create implicit debug window - we will only render it if the user has added something to it.
GUI.Begin("Debug##Default", Application.InitialDebugWindowRect);
}
internal static void Render()
{
GUIContext g = Application.ImGuiContext;
if (MainForm.Closed)
{
return;
}
g.FrameCountRendered = g.FrameCount;
Metrics.VertexNumber = 0;
Metrics.IndexNumber = 0;
Metrics.RenderWindows = 0;
WindowManager w = g.WindowManager;
//reset MeshBuffer and MeshList
{
foreach (var form in w.Viewports)
{
form.MeshBuffer.Clear();
form.MeshBuffer.Init();
form.backgroundMeshList.Clear();
form.foregroundMeshList.Clear();
}
foreach (var window in w.Windows)
{
window.MeshList.Clear();
}
}
//build MeshList of all forms from their RenderTree
{
foreach (var form in w.Viewports)
{
form.RenderToBackgroundList();
}
foreach (var window in w.Windows)
{
if (!window.Active && !Utility.HasAllFlags(window.Flags, WindowFlags.ChildWindow))
{
continue;
}
window.RenderToMeshList();
}
foreach (var form in w.Viewports)
{
form.RenderToForegroundList();
}
}
//append all MeshLists to form's MeshBuffer
{
foreach (var form in w.Viewports)
{
if (!form.PlatformWindowCreated)
{
continue;
}
if (form.Closed)
{
continue;
}
form.MeshBuffer.Append(form.backgroundMeshList);
}
foreach (var window in w.Windows)
{
if (window.Viewport == null)
{
continue;
}
if (window.Viewport.PlatformWindowCreated == false)
{
continue;
}
if (window.Viewport.Closed)
{
continue;
}
var meshBuffer = window.Viewport.MeshBuffer;
meshBuffer.Append(window.MeshList);
if (window.Name != Metrics.WindowName)
{
Metrics.VertexNumber += meshBuffer.ShapeMesh.VertexBuffer.Count
+ meshBuffer.ImageMesh.VertexBuffer.Count
+ meshBuffer.TextMesh.VertexBuffer.Count;
Metrics.IndexNumber += meshBuffer.ShapeMesh.IndexBuffer.Count
+ meshBuffer.ImageMesh.IndexBuffer.Count
+ meshBuffer.TextMesh.IndexBuffer.Count;
Metrics.RenderWindows++;
}
}
foreach (var form in w.Viewports)
{
if (!form.PlatformWindowCreated)
{
continue;
}
if (form.Closed)
{
continue;
}
form.MeshBuffer.Append(form.foregroundMeshList);
}
}
//render each form's MeshBuffer to back-buffer
foreach (var form in w.Viewports)
{
if (!form.PlatformWindowCreated)
{
continue;
}
if (form.Closed)
{
continue;
}
//TODO don't render for hidden forms
Application.renderer.SetRenderingWindow(form.NativeWindow);
Application.renderer.Clear(form.BackgroundColor);
var meshBuffer = form.MeshBuffer;
Application.renderer.DrawMeshes(
(int)form.ClientSize.Width, (int)form.ClientSize.Height,
(meshBuffer.ShapeMesh, meshBuffer.ImageMesh, meshBuffer.TextMesh));
}
//swap front and back-buffer
foreach (var form in w.Viewports)
{
if (!form.PlatformWindowCreated)
{
continue;
}
if (form.Closed)
{
continue;
}
//TODO don't swap for hidden forms
Application.renderer.SetRenderingWindow(form.NativeWindow);
Application.renderer.SwapBuffers();
}
//reset to render main form
Application.renderer.SetRenderingWindow(MainForm.NativeWindow);
}
public static void DrawTextBox(Rect rect, int id, string text, InputTextContext context, GUIState state)
{
GUIContext g = Form.current.uiContext;
WindowManager w = g.WindowManager;
Window window = w.CurrentWindow;
var d = window.DrawList;
var style = GUIStyle.Basic;
// draw text, selection and caret
var contentRect = style.GetContentRect(rect);
d.PushClipRect(contentRect, true);
if (g.ActiveId == id)
{
//Calculate positions and sizes
var textContext = TextMeshUtil.GetTextContext(context.Text, rect.Size, style, GUIState.Normal);
var offsetOfTextRect = contentRect.TopLeft;
float pointX, pointY;
float caretHeight;
textContext.IndexToXY(context.CaretIndex, false, out pointX, out pointY, out caretHeight);
var caretTopPoint = new Point(pointX, pointY);
var caretBottomPoint = new Point(pointX, pointY + caretHeight);
caretTopPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
caretBottomPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
byte caretAlpha = context.CaretAlpha;
// Check if the caret is outside the rect. If so, move the text so the caret is always shown. FIXME this should be done in TextBoxBehaviour
var caretX = caretTopPoint.X;
if (caretX < contentRect.X || caretX > contentRect.Right)
{
var offsetX = -(caretX - contentRect.Width - rect.X);
contentRect.Offset(offsetX, 0);
caretTopPoint.Offset(offsetX, 0);
caretBottomPoint.Offset(offsetX, 0);
}
//Draw text
d.DrawText(contentRect, context.Text, style, GUIState.Normal);
//Draw selection rect
/*
* Note: Design
*
* left bound right bound
* ↓ ↓
* | A-----------------+
* | |CONTENT_CONTENT_C| => Line 1 => rect1
* +------B |
* |ONTENT_CONTENT_CONTENT_C| => Line 2 (represents inner lines) => rect2
* | C------+
* |ONTENT_CONTENT_CO| => Line 3 => rect3
* +-----------------D
*
* left bound = l
* right bound = r
*/
if (context.SelectIndex != context.CaretIndex)
{
float selectPointX, selectPointY;
textContext.IndexToXY(context.SelectIndex, false, out selectPointX, out selectPointY, out float dummyHeight);
var selectTopPoint = new Point(selectPointX, selectPointY);
var selectBottomPoint = new Point(selectPointX, selectPointY + caretHeight);
selectTopPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
selectBottomPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
var delta = Math.Abs(selectTopPoint.Y - caretTopPoint.Y);
if (delta < caretHeight) // single line
{
var selectionRect = new Rect(
new Point(pointX, pointY),
new Point(selectPointX, selectPointY + caretHeight));
selectionRect.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
d.AddRectFilled(selectionRect.Min, selectionRect.Max, Color.Argb(100, 10, 102, 214));
}
else//mutiple line
{
var l = contentRect.Left;
var r = contentRect.Right;
Point A;
Point B;
Point C;
Point D;
if (selectTopPoint.Y > caretTopPoint.Y)
{
A = caretTopPoint;
B = caretBottomPoint;
C = selectTopPoint;
D = selectBottomPoint;
}
else
{
A = selectTopPoint;
B = selectBottomPoint;
C = caretTopPoint;
D = caretBottomPoint;
}
// Line 1
var rect1 = new Rect(A, r - A.X, caretHeight);
d.AddRectFilled(rect1, Color.Argb(100, 10, 102, 214), 12);
d.AddRect(rect1.Min, rect1.Max, Color.White, 12, 15, 2);
// Line 2
var rect2 = new Rect(new Point(l, B.Y), new Point(r, C.Y));
if (rect2.Height > 0.5 * caretHeight)//TODO There should more a more reasonable way to detect this: If it only has two lines, we don't draw the inner rectangle.
{
d.AddRectFilled(rect2, Color.Argb(100, 10, 102, 214), 12);
d.AddRect(rect2.Min, rect2.Max, Color.White, 12, 15, 2);
}
// Line 3
var rect3 = new Rect(new Point(l, C.Y), D);
d.AddRectFilled(rect3, Color.Argb(100, 10, 102, 214), 12);
d.AddRect(rect3.Min, rect3.Max, Color.White, 12, 15, 2);
}
}
//Draw caret
d.PathMoveTo(caretTopPoint);
d.PathLineTo(caretBottomPoint);
d.PathStroke(Color.Argb(caretAlpha, 0, 0, 0), false, 2);
}
else
{
d.DrawText(contentRect, text, style, GUIState.Normal);
}
d.PopClipRect();
// draw the box
{
d.AddRect(rect.Min, rect.Max, style.GetBorderColor(state));
}
}
public Window(string name, Point position, Size size, WindowFlags Flags)
{
Form form = Form.current;
GUIContext g = form.uiContext;
WindowManager w = g.WindowManager;
this.ID = name.GetHashCode();
this.Name = name;
this.Active = this.WasActive = false;
this.Position = position;
this.FullSize = size;
this.Flags = Flags;
this.AbsoluteVisualList = new List <Visual>();
this.RenderTree = new RenderTree(this.ID, position, size);
this.RenderContext = new RenderContext(this.geometryRenderer, this.MeshList);
this.IDStack.Push(this.ID);
this.MoveID = this.GetID("#MOVE");
this.MeshBuffer.OwnerName = this.Name;
#region Window nodes
{
var windowContainer = new Node(this.GetID("window"), "window");
this.WindowContainer = windowContainer;
var style = windowContainer.RuleSet;
style.BorderRadius = (2, 2, 2, 2);
style.BorderColor = (Color.Rgb(0x707070), Color.Rgb(0x707070), Color.Rgb(0x707070), Color.Rgb(0x707070));
style.Set(StylePropertyName.BorderTopColor, Color.Blue, GUIState.Active);
style.Set(StylePropertyName.BorderRightColor, Color.Blue, GUIState.Active);
style.Set(StylePropertyName.BorderBottomColor, Color.Blue, GUIState.Active);
style.Set(StylePropertyName.BorderLeftColor, Color.Blue, GUIState.Active);
style.Set(StylePropertyName.BorderTopColor, Color.Gray, GUIState.Hover);
style.Set(StylePropertyName.BorderRightColor, Color.Gray, GUIState.Hover);
style.Set(StylePropertyName.BorderBottomColor, Color.Gray, GUIState.Hover);
style.Set(StylePropertyName.BorderLeftColor, Color.Gray, GUIState.Hover);
style.Set(StylePropertyName.BorderTop, 1.0);
style.Set(StylePropertyName.BorderRight, 1.0);
style.Set(StylePropertyName.BorderBottom, 1.0);
style.Set(StylePropertyName.BorderLeft, 1.0);
style.Set(StylePropertyName.PaddingTop, 5.0);
style.Set(StylePropertyName.PaddingRight, 10.0);
style.Set(StylePropertyName.PaddingBottom, 5.0);
style.Set(StylePropertyName.PaddingLeft, 10.0);
style.Set(StylePropertyName.WindowBorderColor, Color.Rgb(255, 0, 0), GUIState.Normal);
style.Set(StylePropertyName.WindowBorderColor, Color.Rgb(0, 0, 255), GUIState.Active);
style.Set(StylePropertyName.WindowShadowColor, Color.Argb(100, 227, 227, 227));
style.Set(StylePropertyName.WindowShadowWidth, 15.0);
style.Set(StylePropertyName.BackgroundColor, Color.White);
style.Set(StylePropertyName.ResizeGripColor, Color.Argb(0x77303030));
style.Set(StylePropertyName.ResizeGripColor, Color.Argb(0xAA303030), GUIState.Hover);
style.Set(StylePropertyName.ResizeGripColor, Color.Argb(0xFF303030), GUIState.Active);
style.Set(StylePropertyName.WindowRounding, 20.0);
windowContainer.AttachLayoutGroup(true);
windowContainer.UseBoxModel = true;
var windowStyleOptions = GUILayout.Width(this.FullSize.Width).Height(
this.Collapsed ? this.CollapsedHeight : this.FullSize.Height
);
windowContainer.RuleSet.ApplyOptions(windowStyleOptions);
this.RenderTree.Root.AppendChild(windowContainer);
}
//title bar
if (!Flags.HaveFlag(WindowFlags.NoTitleBar))
{
this.titleBar = new Node(this.GetID("titleBar"), "title bar");
titleBar.AttachLayoutGroup(false);
titleBar.RuleSet.ApplyOptions(GUILayout.ExpandWidth(true).Height(this.TitleBarHeight));
titleBar.UseBoxModel = true;
StyleRuleSetBuilder b = new StyleRuleSetBuilder(titleBar);
b.Padding((top: 8, right: 8, bottom: 8, left: 8))
.FontColor(Color.Black)
.FontSize(12)
.BackgroundColor(Color.White)
.AlignmentVertical(Alignment.Center)
.AlignmentHorizontal(Alignment.Start);
this.titleIcon = new Node(this.GetID("icon"), "icon");
titleIcon.AttachLayoutEntry(new Size(20, 20));
titleIcon.RuleSet.ApplyOptions(GUILayout.Width(20).Height(20));
titleIcon.UseBoxModel = false;
this.titleText = new Node(this.GetID("title"), "title");
var contentSize = titleText.RuleSet.CalcContentBoxSize(this.Name, GUIState.Normal);
titleText.AttachLayoutEntry(contentSize);
titleText.RuleSet.ApplyOptions(GUILayout.Height(20));
titleText.UseBoxModel = false;
var closeButton = new Node(this.GetID("close button"), "close button");
closeButton.AttachLayoutEntry(new Size(20, 20));
closeButton.RuleSet.ApplyOptions(GUILayout.Width(20).Height(20));
closeButton.UseBoxModel = false;
titleBar.AppendChild(titleIcon);
titleBar.AppendChild(titleText);
this.WindowContainer.AppendChild(titleBar);
}
//client area
{
this.clientArea = new Node(this.GetID("client area"), "client area");
clientArea.AttachLayoutGroup(true);
clientArea.RuleSet.Set(StylePropertyName.OverflowY, (int)OverflowPolicy.Scroll);
clientArea.RuleSet.Set(StylePropertyName.ScrollBarWidth, CurrentOS.IsDesktopPlatform ? 10.0 : 20.0);
clientArea.RuleSet.Set(StylePropertyName.ScrollBarBackgroundColor, Color.Rgb(240));
clientArea.RuleSet.Set(StylePropertyName.ScrollBarButtonColor, Color.Rgb(205), GUIState.Normal);
clientArea.RuleSet.Set(StylePropertyName.ScrollBarButtonColor, Color.Rgb(166), GUIState.Hover);
clientArea.RuleSet.Set(StylePropertyName.ScrollBarButtonColor, Color.Rgb(96), GUIState.Active);
clientArea.RuleSet.ApplyOptions(GUILayout.ExpandWidth(true).ExpandHeight(true));
clientArea.UseBoxModel = true;
clientArea.RuleSet.refNode = clientArea;
#if ShowClientAreaOutline
clientArea.RuleSet.OutlineWidth = 1;
clientArea.RuleSet.OutlineColor = Color.DarkRed;
#endif
this.ClientAreaNode = clientArea;
this.WindowContainer.AppendChild(clientArea);
}
//resize grip (lasy-initialized)
if (!Flags.HaveFlag(WindowFlags.NoTitleBar))
{
this.ShowWindowTitleBar(true);
}
this.ShowWindowClientArea(!this.Collapsed);
#endregion
}
public void Setup(string name, Point position, Size size, ref bool open, double bg_alpha, WindowFlags flags,
long current_frame, Window parent_window)
{
Form form = Form.current;
GUIContext g = form.uiContext;
WindowManager w = g.WindowManager;
this.Active = true;
this.BeginCount = 0;
this.ClipRect = Rect.Big;
this.LastActiveFrame = current_frame;
// clear draw list, setup outer clip rect
this.DrawList.Clear();
this.DrawList.Init();
Rect fullScreenRect = new Rect(0, 0, form.ClientSize);
if (flags.HaveFlag(WindowFlags.ChildWindow) && !flags.HaveFlag(WindowFlags.ComboBox | WindowFlags.Popup))
{
this.DrawList.PushClipRect(parent_window.ClipRect, true);
this.ClipRect = this.DrawList.GetCurrentClipRect();
}
else
{
this.DrawList.PushClipRect(fullScreenRect, true);
this.ClipRect = this.DrawList.GetCurrentClipRect();
}
// draw outer clip rect
//this.DrawList.AddRect(this.ClipRect.TopLeft, this.ClipRect.BottomRight, Color.Blue);//test only
// Collapse window by double-clicking on title bar
if (!(flags.HaveFlag(WindowFlags.NoTitleBar)) && !(flags.HaveFlag(WindowFlags.NoCollapse)))
{
if (w.HoveredWindow == this && g.IsMouseHoveringRect(this.TitleBarRect) &&
Mouse.Instance.LeftButtonDoubleClicked)
{
this.Collapsed = !this.Collapsed;
w.FocusWindow(this);
}
}
else
{
this.Collapsed = false;
}
#region size
this.ApplySize(this.FullSize);
this.Size = this.Collapsed ? this.TitleBarRect.Size : this.FullSize;
#endregion
#region position
this.Position = new Point((int)this.PosFloat.X, (int)this.PosFloat.Y);
if (flags.HaveFlag(WindowFlags.ChildWindow))
{
this.Position = this.PosFloat = position;
this.Size = this.FullSize = size; // 'size' provided by user passed via BeginChild()->Begin().
}
#endregion
// Draw window + handle manual resize
GUIStyle style = this.Style;
GUIStyle titleBarStyle = this.TitleBarStyle;
Rect title_bar_rect = this.TitleBarRect;
float window_rounding = (float)style.Get <double>(GUIStyleName.WindowRounding);
if (this.Collapsed)
{
// Draw title bar only
this.DrawList.AddRectFilled(title_bar_rect.Min, title_bar_rect.Max, new Color(0.40f, 0.40f, 0.80f, 0.50f));
}
else
{
Color resize_col = Color.Clear;
double rezie_size = this.Style.Get <double>(GUIStyleName.ResizeGripSize);
double resize_corner_size = Math.Max(rezie_size * 1.35, window_rounding + 1.0 + rezie_size * 0.2);
if (!flags.HaveFlag(WindowFlags.AlwaysAutoResize) && !flags.HaveFlag(WindowFlags.NoResize))
{
// Manual resize
var br = this.Rect.BottomRight;
Rect resize_rect = new Rect(br - new Vector(resize_corner_size * 0.75f, resize_corner_size * 0.75f), br);
int resize_id = this.GetID("#RESIZE");
bool hovered, held;
GUIBehavior.ButtonBehavior(resize_rect, resize_id, out hovered, out held, ButtonFlags.FlattenChilds);
resize_col =
held
? style.Get <Color>(GUIStyleName.ResizeGripColor, GUIState.Active)
: hovered
? style.Get <Color>(GUIStyleName.ResizeGripColor, GUIState.Hover)
: style.Get <Color>(GUIStyleName.ResizeGripColor);
if (hovered || held)
{
//Mouse.Instance.Cursor = Cursor.NeswResize;
}
if (held)
{
// We don't use an incremental MouseDelta but rather compute an absolute target size based on mouse position
var t = Mouse.Instance.Position - g.ActiveIdClickOffset - this.Position;
var new_size_width = t.X + resize_rect.Width;
var new_size_height = t.Y + resize_rect.Height;
new_size_width =
MathEx.Clamp(new_size_width, 330, fullScreenRect.Width); //min size of a window is 145x235
new_size_height = MathEx.Clamp(new_size_height, 150, fullScreenRect.Height);
Size resize_size = new Size(new_size_width, new_size_height);
this.ApplySize(resize_size);
// adjust scroll parameters
var contentSize = this.ContentRect.Size;
if (contentSize != Size.Zero)
{
var vH = this.Rect.Height - this.TitleBarHeight - this.Style.BorderVertical -
this.Style.PaddingVertical;
var cH = contentSize.Height;
if (cH > vH)
{
var oldScrollY = this.Scroll.Y;
oldScrollY = MathEx.Clamp(oldScrollY, 0, cH - vH);
this.Scroll.Y = oldScrollY;
}
}
}
this.Size = this.FullSize;
title_bar_rect = this.TitleBarRect;
}
// Window background
Color bg_color = style.BackgroundColor;
if (bg_alpha >= 0.0f)
{
bg_color.A = bg_alpha;
}
if (bg_color.A > 0.0f)
{
this.DrawList.AddRectFilled(this.Position + new Vector(0, this.TitleBarHeight),
this.Rect.BottomRight, bg_color, window_rounding,
flags.HaveFlag(WindowFlags.NoTitleBar) ? 15 : 4 | 8);
}
// Title bar
if (!flags.HaveFlag(WindowFlags.NoTitleBar))
{
this.DrawList.AddRectFilled(title_bar_rect.TopLeft, title_bar_rect.BottomRight,
w.FocusedWindow == this
? titleBarStyle.Get <Color>(GUIStyleName.BackgroundColor, GUIState.Active)
: titleBarStyle.Get <Color>(GUIStyleName.BackgroundColor), window_rounding, 1 | 2);
}
// Render resize grip
// (after the input handling so we don't have a frame of latency)
if (!flags.HaveFlag(WindowFlags.NoResize))
{
Point br = this.Rect.BottomRight;
var borderBottom = this.Style.BorderBottom;
var borderRight = this.Style.BorderRight;
this.DrawList.PathLineTo(br + new Vector(-resize_corner_size, -borderBottom));
this.DrawList.PathLineTo(br + new Vector(-borderRight, -resize_corner_size));
this.DrawList.PathArcToFast(
new Point(br.X - window_rounding - borderRight, br.Y - window_rounding - borderBottom), window_rounding,
0, 3);
this.DrawList.PathFill(resize_col);
}
// Scroll bar
if (flags.HaveFlag(WindowFlags.VerticalScrollbar))
{
//get content size without clip
var contentPosition = this.ContentRect.TopLeft;
var contentSize = this.ContentRect.Size;
if (contentSize != Size.Zero)
{
int id = this.GetID("#SCROLLY");
double scrollBarWidth = this.Style.Get <double>(GUIStyleName.ScrollBarWidth);
Point scroll_TopLeft = new Point(
this.Rect.Right - scrollBarWidth - this.Style.BorderRight - this.Style.PaddingRight,
this.Rect.Top + this.TitleBarHeight + this.Style.BorderTop + this.Style.PaddingTop);
var sH = this.Rect.Height - this.TitleBarHeight - this.Style.BorderVertical -
this.Style.PaddingVertical
+ (flags.HaveFlag(WindowFlags.NoResize) ? 0 : -resize_corner_size);
var vH = this.Rect.Height - this.TitleBarHeight - this.Style.BorderVertical -
this.Style.PaddingVertical;
Point scroll_BottomRight = scroll_TopLeft + new Vector(scrollBarWidth, sH);
Rect bgRect = new Rect(scroll_TopLeft, scroll_BottomRight);
var cH = contentSize.Height;
var top = this.Scroll.Y * sH / cH;
var height = sH * vH / cH;
if (height < sH)
{
// handle mouse click/drag
bool held = false;
bool hovered = false;
bool previously_held = (g.ActiveId == id);
GUIBehavior.ButtonBehavior(bgRect, id, out hovered, out held);
if (held)
{
top = Mouse.Instance.Position.Y - bgRect.Y - 0.5 * height;
top = MathEx.Clamp(top, 0, sH - height);
var targetScrollY = top * cH / sH;
this.SetWindowScrollY(targetScrollY);
}
Point scrollButton_TopLeft = scroll_TopLeft + new Vector(0, top);
Point scrllButton_BottomRight = scrollButton_TopLeft + new Vector(scrollBarWidth, height);
Rect buttonRect = new Rect(scrollButton_TopLeft, scrllButton_BottomRight);
//Draw vertical scroll bar and button
{
var bgColor = this.Style.Get <Color>(GUIStyleName.ScrollBarBackgroundColor);
var buttonColor = this.Style.Get <Color>(GUIStyleName.ScrollBarButtonColor,
held ? GUIState.Active : hovered ? GUIState.Hover : GUIState.Normal);
this.DrawList.AddRectFilled(bgRect.TopLeft, buttonRect.TopRight, bgColor);
this.DrawList.AddRectFilled(buttonRect.TopLeft, buttonRect.BottomRight, buttonColor);
this.DrawList.AddRectFilled(buttonRect.BottomLeft, bgRect.BottomRight, bgColor);
}
}
else
{
var bgColor = this.Style.Get <Color>(GUIStyleName.ScrollBarBackgroundColor);
this.DrawList.AddRectFilled(bgRect.TopLeft, bgRect.BottomRight, bgColor);
}
}
}
this.ContentRect = Rect.Zero;
}
// draw title bar text
if (!flags.HaveFlag(WindowFlags.NoTitleBar))
{
// title text
var state = w.FocusedWindow == this ? GUIState.Active : GUIState.Normal;
this.DrawList.DrawBoxModel(title_bar_rect, name, titleBarStyle, state);
// close button
if (CloseButton(this.GetID("#CLOSE"), new Rect(title_bar_rect.TopRight + new Vector(-45, 0), title_bar_rect.BottomRight)))
{
open = false;
}
}
// Borders
if (flags.HaveFlag(WindowFlags.ShowBorders))
{
var state = w.FocusedWindow == this ? GUIState.Active : GUIState.Normal;
// window border
var borderColor = this.Style.Get <Color>(GUIStyleName.WindowBorderColor, state);
this.DrawList.AddRect(this.Position, this.Position + new Vector(this.Size.Width, this.Size.Height),
borderColor, window_rounding);
// window shadow
#if false
{
var state = w.FocusedWindow == this ? GUIState.Active : GUIState.Normal;
var shadowColor = this.Style.Get <Color>(GUIStyleName.WindowShadowColor, state);
var shadowWidth = this.Style.Get <double>(GUIStyleName.WindowShadowWidth, state);
var d = this.DrawList;
//top-left corner
d.AddRectFilledGradientTopLeftToBottomRight(this.Rect.TopLeft + new Vector(-shadowWidth, -shadowWidth), this.Rect.TopLeft, Color.Clear, shadowColor);
//top
d.AddRectFilledGradient(this.Rect.TopLeft + new Vector(0, -shadowWidth), this.Rect.TopRight, Color.Clear, shadowColor);
d.AddRectFilledGradient(this.Rect.BottomLeft, this.Rect.BottomRight + new Vector(0, shadowWidth), shadowColor, Color.Clear);
}
#endif
}
// Save clipped aabb so we can access it in constant-time in FindHoveredWindow()
this.WindowClippedRect = this.Rect;
this.WindowClippedRect.Intersect(this.ClipRect);
}
internal void NewFrame()
{
current = this;
GUIContext g = this.uiContext;
WindowManager w = g.WindowManager;
if (!g.Initialized)
{
// Initialize on first frame
g.Initialized = true;
}
// Time
g.DeltaTime = Time.deltaTime;
g.Time += g.DeltaTime;
g.FrameCount++;
//fps
var detlaTime = g.Time - g.lastFPSUpdateTime;
g.lastFrameCount++;
if (detlaTime > 1000)
{
g.fps = (int)g.lastFrameCount;
g.lastFrameCount = 0;
g.lastFPSUpdateTime = g.Time;
}
#region Input
#region mouse position
if (Mouse.Instance.Position.X < 0 && Mouse.Instance.Position.Y < 0)
{
Mouse.Instance.Position = new Point(-9999.0f, -9999.0f);
}
if ((Mouse.Instance.Position.X < 0 && Mouse.Instance.Position.Y < 0) || (Mouse.Instance.LastPosition.X < 0 && Mouse.Instance.LastPosition.Y < 0)) // if mouse just appeared or disappeared (negative coordinate) we cancel out movement in MouseDelta
{
Mouse.Instance.MouseDelta = Vector.Zero;
}
else
{
Mouse.Instance.MouseDelta = Mouse.Instance.Position - Mouse.Instance.LastPosition;
}
Mouse.Instance.LastPosition = Mouse.Instance.Position;
#endregion
#region mouse left button
Mouse.Instance.LeftButtonPressed = Mouse.Instance.LeftButtonState == KeyState.Down && Mouse.Instance.LeftButtonDownDuration < 0;
Mouse.Instance.LeftButtonReleased = Mouse.Instance.LeftButtonState == KeyState.Up && Mouse.Instance.LeftButtonDownDuration >= 0;
Mouse.Instance.LeftButtonDownDurationPrev = Mouse.Instance.LeftButtonDownDuration;
Mouse.Instance.LeftButtonDownDuration = Mouse.Instance.LeftButtonState == KeyState.Down ? (Mouse.Instance.LeftButtonDownDuration < 0 ? 0 : Mouse.Instance.LeftButtonDownDuration + g.DeltaTime) : -1;
Mouse.Instance.LeftButtonDoubleClicked = false;
if (Mouse.Instance.LeftButtonPressed)
{
if (g.Time - Mouse.Instance.LeftButtonClickedTime < Mouse.DoubleClickIntervalTimeSpan)
{
if ((Mouse.Instance.Position - Mouse.Instance.LeftButtonPressedPos).LengthSquared < Mouse.DoubleClickMaxDistance * Mouse.DoubleClickMaxDistance)
{
Mouse.Instance.LeftButtonDoubleClicked = true;
}
Mouse.Instance.LeftButtonClickedTime = -99999; // so the third click isn't turned into a double-click
}
else
{
Mouse.Instance.LeftButtonClickedTime = g.Time;
}
Mouse.Instance.LeftButtonPressedPos = Mouse.Instance.Position;
Mouse.Instance.DragMaxDiatanceSquared = 0;
}
else if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
Mouse.Instance.DragMaxDiatanceSquared = Math.Max(Mouse.Instance.DragMaxDiatanceSquared, (Mouse.Instance.Position - Mouse.Instance.LeftButtonPressedPos).LengthSquared);
}
if (Mouse.Instance.LeftButtonPressed)
{
++Mouse.Instance.LeftButtonPressedTimes;
}
if (Mouse.Instance.LeftButtonReleased)
{
++Mouse.Instance.LeftButtonReleasedTimes;
}
if (Mouse.Instance.LeftButtonDoubleClicked)
{
++Mouse.Instance.LeftButtonDoubleClickedTimes;
}
#endregion
#region mouse right button
Mouse.Instance.RightButtonPressed = Mouse.Instance.RightButtonState == KeyState.Down && Mouse.Instance.RightButtonDownDuration < 0;
Mouse.Instance.RightButtonReleased = Mouse.Instance.RightButtonState == KeyState.Up && Mouse.Instance.RightButtonDownDuration >= 0;
Mouse.Instance.RightButtonDownDuration = Mouse.Instance.RightButtonState == KeyState.Down ? (Mouse.Instance.RightButtonDownDuration < 0 ? 0 : Mouse.Instance.RightButtonDownDuration + g.DeltaTime) : -1;
if (Mouse.Instance.RightButtonPressed)
{
++Mouse.Instance.RightButtonPressedTimes;
}
if (Mouse.Instance.RightButtonReleased)
{
++Mouse.Instance.RightButtonReleasedTimes;
}
#endregion
#endregion
// Clear reference to active widget if the widget isn't alive anymore
g.HoveredIdPreviousFrame = g.HoverId;
g.HoverId = 0;
g.HoverIdAllowOverlap = false;
if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
{
g.SetActiveID(0);
}
g.ActiveIdPreviousFrame = g.ActiveId;
g.ActiveIdIsAlive = false;
g.ActiveIdIsJustActivated = false;
w.NewFrame(g);
// Create implicit window - we will only render it if the user has added something to it.
GUI.Begin("Debug", ref this.debugWindowOpen, (0, 0), (200, 140), 0.8);
}
public static bool Begin(string name, ref bool open, Point position, Size size, double bg_alpha = 1, WindowFlags flags = WindowFlags.VerticalScrollbar)
{
if (bg_alpha < 0.0f)
{
throw new ArgumentOutOfRangeException(nameof(bg_alpha), nameof(bg_alpha) + " cannot be negative.");
}
Form form = Form.current;
GUIContext g = form.uiContext;
WindowManager w = g.WindowManager;
Debug.Assert(name != null); // Window name required
Debug.Assert(g.Initialized); // Forgot to call NewFrame()
Debug.Assert(g.FrameCountEnded != g.FrameCount); // Called Render() or EndFrame() and haven't called NewFrame() again yet
if (flags.HaveFlag(WindowFlags.NoInputs))
{
flags |= WindowFlags.NoMove | WindowFlags.NoResize;
}
// Find or create
Window window = w.FindWindowByName(name) ?? w.CreateWindow(name, position, size, flags);
// Check if this is the first call of Begin
long current_frame = g.FrameCount;
bool first_begin_of_the_frame = (window.LastActiveFrame != current_frame);
if (first_begin_of_the_frame)
{
window.Flags = flags;
}
else
{
flags = window.Flags;
}
// Add to stack
Window parent_window = w.WindowStack.Count != 0 ? w.WindowStack[w.WindowStack.Count - 1] : null;
w.WindowStack.Add(window);
w.CurrentWindow = window;
Debug.Assert(parent_window != null || !flags.HaveFlag(WindowFlags.ChildWindow));
// Update known root window (if we are a child window, otherwise window == window->RootWindow)
int root_idx;
for (root_idx = w.WindowStack.Count - 1; root_idx > 0; root_idx--)
{
if (!(w.WindowStack[root_idx].Flags.HaveFlag(WindowFlags.ChildWindow)))
{
break;
}
}
window.RootWindow = w.WindowStack[root_idx];
// When reusing window again multiple times a frame, just append content (don't need to setup again)
if (first_begin_of_the_frame)
{
window.FirstUpdate(name, size, ref open, bg_alpha, flags, current_frame, parent_window);
ImGui.Development.Metrics.ActiveWindows++;
}
// Clear 'accessed' flag last thing
if (first_begin_of_the_frame)
{
window.Accessed = false;
}
window.BeginCount++;
// Child window can be out of sight and have "negative" clip windows.
// Mark them as collapsed so commands are skipped earlier (we can't manually collapse because they have no title bar).
if (flags.HaveFlag(WindowFlags.ChildWindow))
{
Debug.Assert(flags.HaveFlag(WindowFlags.NoTitleBar));
window.Collapsed = parent_window != null && parent_window.Collapsed;
window.Position = position;
}
// Return false if we don't intend to display anything to allow user to perform an early out optimization
window.SkipItems = window.Collapsed || !window.Active;
window.RenderTree.CurrentContainer = window.ClientAreaNode;
return(!window.SkipItems);
}
public static bool TreeNode(string label, ref bool open)
{
GUIContext g = GetCurrentContext();
Window window = GetCurrentWindow();
if (window.SkipItems)
{
return(false);
}
BeginVertical(label + "_Tree");
var id = window.GetID(label);
// style apply
var style = GUIStyle.Basic;
style.PushStretchFactor(false, 1); //+1, always expand width
style.PushPadding((1, 1, 1, 5)); //+4
do
{
// rect
var lineHeight = style.GetLineHeight();
Rect rect = window.GetRect(id, new Size(0, lineHeight));
if (rect == Layout.StackLayout.DummyRect) //TODO how shold dummy rect be correctly handled in every control?
{
break;
}
// interact
bool hovered, held;
bool pressed = GUIBehavior.ButtonBehavior(rect, id, out hovered, out held, ButtonFlags.PressedOnClick);
if (pressed)
{
open = !open;
}
// render
{
DrawList d = window.DrawList;
var state = (hovered && held) ? GUIState.Active : hovered ? GUIState.Hover : GUIState.Normal;
if (hovered || held)
{
style.PushBgColor(new Color(0.40f, 0.40f, 0.90f, 0.45f), GUIState.Normal); //+1 TODO It's stupid to sprcifiy style like this. There should be a better way to do this.
style.PushBgColor(new Color(0.45f, 0.45f, 0.90f, 0.80f), GUIState.Hover); //+1
style.PushBgColor(new Color(0.53f, 0.53f, 0.87f, 0.80f), GUIState.Active); //+1
var color = style.Get <Color>(GUIStyleName.BackgroundColor, state);
d.RenderFrame(rect.Min, rect.Max, color, false, 0);
style.PopStyle(3); //-3
}
d.RenderCollapseTriangle(rect.Min + new Vector(0 + style.PaddingTop, lineHeight * 0.15f), open, lineHeight, Color.White, 0.7);
rect.X += rect.Height;
var delta = rect.Width - rect.Height;
if (delta > 0)
{
rect.Width = delta;
}
d.DrawText(rect, label, style, state);
}
}while(false);
// style restore
style.PopStyle(); //-1
style.PopStyle(4); //-4
BeginHorizontal("#Content");
Space("Space", 20);
BeginVertical("#Items");
return(open);
}
/// <summary>
/// Create an auto-layout collapsing header.
/// </summary>
/// <param name="text">header text</param>
/// <param name="open">opened</param>
/// <returns>true when opened</returns>
/// <remarks> It is horizontally stretched (factor 1).</remarks>
public static bool CollapsingHeader(string text, ref bool open, float scale = 1)
{
GUIContext g = GetCurrentContext();
Window window = GetCurrentWindow();
if (window.SkipItems)
{
return(false);
}
var id = window.GetID(text);
// style apply
var style = GUIStyle.Basic;
style.PushStretchFactor(false, 1); //+1, always expand width
style.PushPadding(2); //4
// rect
var height = style.GetLineHeight();
Rect rect = window.GetRect(id, new Size(0, height));
if (rect == Layout.StackLayout.DummyRect) //TODO how shold dummy rect be correctly handled in every control?
{
style.PopStyle(); //-1
style.PopStyle(4); //-4
return(false);
}
// interact
bool hovered, held;
bool pressed = GUIBehavior.ButtonBehavior(rect, id, out hovered, out held, ButtonFlags.PressedOnClick);
if (pressed)
{
open = !open;
}
// render
{
DrawList d = window.DrawList;
style.PushBgColor(new Color(0.40f, 0.40f, 0.90f, 0.45f), GUIState.Normal); //+1 TODO It's stupid to sprcifiy style like this. There should be a better way to do this.
style.PushBgColor(new Color(0.45f, 0.45f, 0.90f, 0.80f), GUIState.Hover); //+1
style.PushBgColor(new Color(0.53f, 0.53f, 0.87f, 0.80f), GUIState.Active); //+1
var state = (hovered && held) ? GUIState.Active : hovered ? GUIState.Hover : GUIState.Normal;
Color col = style.Get <Color>(GUIStyleName.BackgroundColor, state);
d.RenderFrame(rect.Min, rect.Max, col, false, 0);
style.PopStyle(3);
d.RenderCollapseTriangle(rect.Min, open, rect.Height, Color.Black, scale);
rect.X += rect.Height;
var delta = rect.Width - rect.Height;
if (delta > 0)
{
rect.Width = delta;
}
d.DrawText(rect, text, style, state);
}
// style restore
style.PopStyle(); //-1
style.PopStyle(4); //-4
return(open);
}
public bool IsHovered(Rect bb, int id, bool flattenChildren = false)
{
GUIContext g = this;
if (g.HoverId != 0 && g.HoverId != id && !g.HoverIdAllowOverlap)
{
return(false);
}
Window window = g.WindowManager.CurrentWindow;
if (g.WindowManager.HoveredWindow != window &&
(!flattenChildren || g.WindowManager.HoveredRootWindow != window.RootWindow))
{
return(false);
}
if (g.ActiveId != 0 && g.ActiveId != id && !g.ActiveIdAllowOverlap)
{
return(false);
}
if (!IsMouseHoveringRect(bb.Min, bb.Max))
{
return(false);
}
if (!this.WindowManager.IsWindowContentHoverable(g.WindowManager.HoveredRootWindow))
{
return(false);
}
// [DEBUG] Item Picker tool!
// We perform the check here because SetHoveredID() is not frequently called (1~ time a frame), making
// the cost of this tool near-zero.
// TODO Consider how to get slightly better call-stack and support picking non-hovered
// items.
if (g.DebugItemPickerActive && g.HoveredIdPreviousFrame == id)
{
Form.current.ForegroundDrawingContext.DrawRectangle(
null, new Rendering.Pen(Color.Argb(255, 255, 255, 0), 1), bb);
}
if (g.DebugItemPickerBreakID == id)
{
//System.Diagnostics.Debugger.Break();
System.Diagnostics.StackTrace stackTrace = new System.Diagnostics.StackTrace(2, true);
var frames = stackTrace.GetFrames();
if (frames != null)
{
System.Diagnostics.StackFrame targetFrame = null;
bool nextFrame = false;
foreach (var frame in frames)
{
var methodInfo = frame.GetMethod();
if (methodInfo.IsPublic && methodInfo.DeclaringType == typeof(GUILayout))
{
nextFrame = true;
continue;
}
if (nextFrame)
{
targetFrame = frame;
break;
}
}
if (targetFrame != null)
{
string fileName = targetFrame.GetFileName();
string methodName = targetFrame.GetMethod().Name;
int lineNumber = targetFrame.GetFileLineNumber();
System.Diagnostics.Debug.WriteLine($"{fileName}({lineNumber}): {methodName}");
}
}
}
return(true);
}
public void EndFrame(GUIContext g)
{
// Click to focus window and start moving (after we're done with all our widgets)
if (g.ActiveId == 0 && g.HoverId == 0 && Mouse.Instance.LeftButtonPressed)
{
if (this.HoveredRootWindow != null)
{
this.FocusWindow(this.HoveredWindow);
if (!(this.HoveredWindow.Flags.HaveFlag(WindowFlags.NoMove)))
{
this.MovingWindow = this.HoveredWindow;
this.MovingWindowMoveId = this.HoveredRootWindow.MoveId;
g.SetActiveID(this.MovingWindowMoveId, this.HoveredRootWindow);
}
}
else if (this.FocusedWindow != null)
{
// Clicking on void disable focus
this.FocusWindow(null);
}
}
//TODO refactor to don't rely on flag to identify window type, subclass Window instead
// Sort windows so
// 1. child windows always rendered after its parent
// 2. popup windows always rendered after regular window
windowSwapBuffer.Clear();
childWindows.Clear();
popupWindows.Clear();
for (int i = 0; i < Windows.Count; i++)
{
var window = Windows[i];
if (window.Active && window.Flags.HaveFlag(WindowFlags.ChildWindow))
{
childWindows.Add(window);
}
else if (window.Flags.HaveFlag(WindowFlags.Popup))
{
popupWindows.Add(window);
}
else
{
windowSwapBuffer.Add(window);
}
}
foreach (var childWindow in childWindows)
{
var parentWindowIndex = windowSwapBuffer.FindIndex(win => win == childWindow.RootWindow);
if (parentWindowIndex < 0)
{
throw new IndexOutOfRangeException(
$"Cannot find the parent window of child window<{childWindow.Name}>");
}
windowSwapBuffer.Insert(parentWindowIndex + 1, childWindow);
}
windowSwapBuffer.AddRange(popupWindows);
Debug.Assert(windowSwapBuffer.Count == Windows.Count);
Windows.Clear();
Windows.AddRange(windowSwapBuffer);
}
public static void DrawTextBox(Node node, int id, string text, InputTextContext context, GUIState state)
{
GUIContext g = Form.current.uiContext;
Rect rect = node.Rect;
var d = node.RenderOpen();
var style = node.RuleSet;
// draw text, selection and caret
var contentRect = node.ContentRect;
// clip text rendering to content-box
//d.PushClip(contentRect);
if (g.ActiveId == id)
{
//Calculate positions and sizes
var textContext = TextMeshUtil.GetTextContext(context.Text, rect.Size, style, GUIState.Normal);
var offsetOfTextRect = contentRect.TopLeft;
float pointX, pointY;
float caretHeight;
textContext.IndexToXY(context.CaretIndex, false, out pointX, out pointY, out caretHeight);
var caretTopPoint = new Point(pointX, pointY);
var caretBottomPoint = new Point(pointX, pointY + caretHeight);
caretTopPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
caretBottomPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
byte caretAlpha = context.CaretAlpha;
// Check if the caret is outside the rect. If so, move the text so the caret is always shown. FIXME this should be done in TextBoxBehaviour
var caretX = caretTopPoint.X;
if (caretX < contentRect.X || caretX > contentRect.Right)
{
var offsetX = -(caretX - contentRect.Width - rect.X);
contentRect.Offset(offsetX, 0);
caretTopPoint.Offset(offsetX, 0);
caretBottomPoint.Offset(offsetX, 0);
}
//Draw text
d.DrawText(style, context.Text, contentRect);
//Draw selection rect
/*
* Note: Design
*
* left bound right bound
* ↓ ↓
* | A-----------------+
* | |CONTENT_CONTENT_C| => Line 1 => rect1
* +------B |
* |ONTENT_CONTENT_CONTENT_C| => Line 2 (represents inner lines) => rect2
* | C------+
* |ONTENT_CONTENT_CO| => Line 3 => rect3
* +-----------------D
*
* left bound = l
* right bound = r
*/
if (context.SelectIndex != context.CaretIndex)
{
float selectPointX, selectPointY;
textContext.IndexToXY(context.SelectIndex, false, out selectPointX, out selectPointY, out float dummyHeight);
var selectTopPoint = new Point(selectPointX, selectPointY);
var selectBottomPoint = new Point(selectPointX, selectPointY + caretHeight);
selectTopPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
selectBottomPoint.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
var delta = Math.Abs(selectTopPoint.Y - caretTopPoint.Y);
if (delta < caretHeight) // single line
{
var selectionRect = new Rect(
new Point(pointX, pointY),
new Point(selectPointX, selectPointY + caretHeight));
selectionRect.Offset(offsetOfTextRect.X, offsetOfTextRect.Y);
d.DrawRectangle(new Brush(Color.Argb(100, 10, 102, 214)), null, selectionRect);
}
else//multiple lines
{
var l = contentRect.Left;
var r = contentRect.Right;
Point A;
Point B;
Point C;
Point D;
if (selectTopPoint.Y > caretTopPoint.Y)
{
A = caretTopPoint;
B = caretBottomPoint;
C = selectTopPoint;
D = selectBottomPoint;
}
else
{
A = selectTopPoint;
B = selectBottomPoint;
C = caretTopPoint;
D = caretBottomPoint;
}
// Line 1
var rect1 = new Rect(A, r - A.X, caretHeight);
d.DrawRectangle(new Brush(Color.Argb(100, 10, 102, 214)), null, rect1);
d.DrawRectangle(null, new Pen(Color.White, 2), rect1);
// Line 2
var rect2 = new Rect(new Point(l, B.Y), new Point(r, C.Y));
if (rect2.Height > 0.5 * caretHeight)//TODO There should more a more reasonable way to detect this: If it only has two lines, we don't draw the inner rectangle.
{
d.DrawRectangle(new Brush(Color.Argb(100, 10, 102, 214)), null, rect2);
d.DrawRectangle(null, new Pen(Color.White, 2), rect2);
}
// Line 3
var rect3 = new Rect(new Point(l, C.Y), D);
d.DrawRectangle(new Brush(Color.Argb(100, 10, 102, 214)), null, rect3);
d.DrawRectangle(null, new Pen(Color.White, 2), rect3);
}
}
//Draw caret
d.DrawLine(new Pen(Color.Argb(caretAlpha, 0, 0, 0), 2), caretTopPoint, caretBottomPoint);
}
else
{
d.DrawText(style, text, contentRect);
}
//d.Pop();
d.Close();
}
public Window(string name, Point position, Size size, WindowFlags Flags)
{
Form form = Form.current;
GUIContext g = form.uiContext;
this.ID = name.GetHashCode();
this.Name = name;
this.IDStack.Push(this.ID);
this.Flags = Flags;
this.PosFloat = position;
this.Position = new Point((int)PosFloat.X, (int)PosFloat.Y);
this.Size = this.FullSize = size;
this.DrawList = new DrawList();
this.MoveID = GetID("#MOVE");
this.Active = WasActive = false;
// window styles
{
var style = new GUIStyle();
style.Set(GUIStyleName.BorderTop, 1.0);
style.Set(GUIStyleName.BorderRight, 1.0);
style.Set(GUIStyleName.BorderBottom, 1.0);
style.Set(GUIStyleName.BorderLeft, 1.0);
style.Set(GUIStyleName.PaddingTop, 5.0);
style.Set(GUIStyleName.PaddingRight, 10.0);
style.Set(GUIStyleName.PaddingBottom, 5.0);
style.Set(GUIStyleName.PaddingLeft, 10.0);
style.Set(GUIStyleName.WindowBorderColor, Color.Rgb(170, 170, 170), GUIState.Normal);
style.Set(GUIStyleName.WindowBorderColor, Color.Rgb(24, 131, 215), GUIState.Active);
style.Set(GUIStyleName.WindowShadowColor, Color.Argb(100, 227, 227, 227));
style.Set(GUIStyleName.WindowShadowWidth, 15.0);
style.Set(GUIStyleName.BackgroundColor, Color.White);
style.Set(GUIStyleName.ResizeGripSize, 20.0);
style.Set(GUIStyleName.ResizeGripColor, Color.Argb(75, 102, 102, 102));
style.Set(GUIStyleName.ResizeGripColor, Color.Argb(150, 102, 102, 102), GUIState.Hover);
style.Set(GUIStyleName.ResizeGripColor, Color.Argb(225, 102, 102, 102), GUIState.Active);
style.Set(GUIStyleName.WindowRounding, 3.0);
style.Set(GUIStyleName.ScrollBarWidth, CurrentOS.IsDesktopPlatform ? 10.0 : 20.0);
style.Set(GUIStyleName.ScrollBarBackgroundColor, Color.Rgb(240));
style.Set(GUIStyleName.ScrollBarButtonColor, Color.Rgb(205), GUIState.Normal);
style.Set(GUIStyleName.ScrollBarButtonColor, Color.Rgb(166), GUIState.Hover);
style.Set(GUIStyleName.ScrollBarButtonColor, Color.Rgb(96), GUIState.Active);
this.Style = style;
}
// window header styles
{
var style = new GUIStyle();
style.Set(GUIStyleName.BackgroundColor, Color.White);
style.Set(GUIStyleName.BackgroundColor, Color.White, GUIState.Active);
style.Set(GUIStyleName.BackgroundColor, Color.White, GUIState.Disabled);
style.Set <double>(GUIStyleName.BorderTopLeftRadius, 3.0);
style.Set <double>(GUIStyleName.BorderTopRightRadius, 3.0);
style.Set(GUIStyleName.PaddingTop, 8.0);
style.Set(GUIStyleName.PaddingRight, 8.0);
style.Set(GUIStyleName.PaddingBottom, 8.0);
style.Set(GUIStyleName.PaddingLeft, 8.0);
style.Set(GUIStyleName.FontColor, Color.Black, GUIState.Normal);
style.Set(GUIStyleName.FontColor, Color.Rgb(153, 153, 153), GUIState.Active);
style.FontFamily = GUIStyle.Default.FontFamily;
style.FontSize = 12.0;
this.TitleBarStyle = style;
}
var scrollBarWidth = this.Style.Get <double>(GUIStyleName.ScrollBarWidth);
var clientSize = new Size(
this.Size.Width - scrollBarWidth - this.Style.PaddingHorizontal - this.Style.BorderHorizontal,
this.Size.Height - this.Style.PaddingVertical - this.Style.BorderVertical - this.TitleBarHeight);
this.StackLayout = new StackLayout(this.ID, clientSize);
}
public Window(string name, Point position, Size size, WindowFlags Flags)
{
Form form = Form.current;
GUIContext g = form.uiContext;
WindowManager w = g.WindowManager;
this.ID = name.GetHashCode();
this.Name = name;
this.Active = this.WasActive = false;
this.Position = position;
this.FullSize = size;
this.Flags = Flags;
this.AbsoluteVisualList = new List <Visual>();
this.RenderTree = new RenderTree(this.ID, position, size);
this.IDStack.Push(this.ID);
this.MoveID = this.GetID("#MOVE");
#region Window nodes
{
var windowContainer = new Node(this.GetID("window"), "window");
this.WindowContainer = windowContainer;
var style = windowContainer.RuleSet;
style.BackgroundColor = Color.White;
style.Border = (1, 1, 1, 1);
style.BorderColor = (Color.Black, Color.Black, Color.Black, Color.Black);
style.Set(GUIStyleName.BorderTopColor, Color.Blue, GUIState.Active);
style.Set(GUIStyleName.BorderRightColor, Color.Blue, GUIState.Active);
style.Set(GUIStyleName.BorderBottomColor, Color.Blue, GUIState.Active);
style.Set(GUIStyleName.BorderLeftColor, Color.Blue, GUIState.Active);
style.Set(GUIStyleName.BorderTopColor, Color.Gray, GUIState.Hover);
style.Set(GUIStyleName.BorderRightColor, Color.Gray, GUIState.Hover);
style.Set(GUIStyleName.BorderBottomColor, Color.Gray, GUIState.Hover);
style.Set(GUIStyleName.BorderLeftColor, Color.Gray, GUIState.Hover);
style.Set(GUIStyleName.BorderTop, 1.0);
style.Set(GUIStyleName.BorderRight, 1.0);
style.Set(GUIStyleName.BorderBottom, 1.0);
style.Set(GUIStyleName.BorderLeft, 1.0);
style.Set(GUIStyleName.PaddingTop, 5.0);
style.Set(GUIStyleName.PaddingRight, 10.0);
style.Set(GUIStyleName.PaddingBottom, 5.0);
style.Set(GUIStyleName.PaddingLeft, 10.0);
style.Set(GUIStyleName.WindowBorderColor, Color.Rgb(255, 0, 0), GUIState.Normal);
style.Set(GUIStyleName.WindowBorderColor, Color.Rgb(0, 0, 255), GUIState.Active);
style.Set(GUIStyleName.WindowShadowColor, Color.Argb(100, 227, 227, 227));
style.Set(GUIStyleName.WindowShadowWidth, 15.0);
style.Set(GUIStyleName.BackgroundColor, Color.White);
style.Set(GUIStyleName.ResizeGripColor, Color.Argb(75, 102, 102, 102));
style.Set(GUIStyleName.ResizeGripColor, Color.Argb(150, 102, 102, 102), GUIState.Hover);
style.Set(GUIStyleName.ResizeGripColor, Color.Argb(225, 102, 102, 102), GUIState.Active);
style.Set(GUIStyleName.WindowRounding, 20.0);
style.Set(GUIStyleName.ScrollBarWidth, CurrentOS.IsDesktopPlatform ? 10.0 : 20.0);
style.Set(GUIStyleName.ScrollBarBackgroundColor, Color.Rgb(240));
style.Set(GUIStyleName.ScrollBarButtonColor, Color.Rgb(205), GUIState.Normal);
style.Set(GUIStyleName.ScrollBarButtonColor, Color.Rgb(166), GUIState.Hover);
style.Set(GUIStyleName.ScrollBarButtonColor, Color.Rgb(96), GUIState.Active);
windowContainer.AttachLayoutGroup(true);
windowContainer.UseBoxModel = true;
var windowStyleOptions = GUILayout.Width(this.FullSize.Width).Height(
this.Collapsed ? this.CollapsedHeight : this.FullSize.Height
);
windowContainer.RuleSet.ApplyOptions(windowStyleOptions);
this.RenderTree.Root.AppendChild(windowContainer);
}
//title bar
{
var titleBarContainer = new Node(this.GetID("titleBar"), "title bar");
this.titleBarNode = titleBarContainer;
titleBarContainer.AttachLayoutGroup(false);
titleBarContainer.RuleSet.ApplyOptions(GUILayout.ExpandWidth(true).Height(this.TitleBarHeight));
titleBarContainer.UseBoxModel = true;
StyleRuleSetBuilder b = new StyleRuleSetBuilder(titleBarContainer);
b.Padding((top: 8, right: 8, bottom: 8, left: 8))
.FontColor(Color.Black)
.FontSize(12)
.BackgroundColor(Color.White)
.AlignmentVertical(Alignment.Center)
.AlignmentHorizontal(Alignment.Start);
var icon = new Node(this.GetID("icon"), "icon");
icon.AttachLayoutEntry(new Size(20, 20));
icon.RuleSet.ApplyOptions(GUILayout.Width(20).Height(20));
icon.UseBoxModel = false;
icon.Primitive = new ImagePrimitive(@"assets/images/logo.png");
var title = new Node(this.GetID("title"), "title");
var contentSize = title.RuleSet.CalcSize(this.Name, GUIState.Normal);
title.AttachLayoutEntry(contentSize);
title.RuleSet.ApplyOptions(GUILayout.Height(20));
title.UseBoxModel = false;
title.Primitive = new TextPrimitive(this.Name);
this.titleBarTitleNode = title;
var closeButton = new Node(this.GetID("close button"), "close button");
closeButton.AttachLayoutEntry(new Size(20, 20));
closeButton.RuleSet.ApplyOptions(GUILayout.Width(20).Height(20));
closeButton.UseBoxModel = false;
PathPrimitive path = new PathPrimitive();
path.PathRect(new Rect(0, 0, 20, 20));
closeButton.Primitive = path;
titleBarContainer.AppendChild(icon);
titleBarContainer.AppendChild(title);
//titleBarContainer.AppendChild(closeButton);
this.WindowContainer.AppendChild(titleBarContainer);
}
//client area
{
var node = new Node(this.GetID("client area"), "client area");
node.AttachLayoutGroup(true);
node.RuleSet.ApplyOptions(GUILayout.ExpandWidth(true).ExpandHeight(true));
node.UseBoxModel = true;
node.RuleSet.OutlineWidth = 1;
node.RuleSet.OutlineColor = Color.Red;
node.RuleSet.refNode = node;
this.ClientAreaNode = node;
this.WindowContainer.AppendChild(node);
}
//resize grip (lasy-initialized)
this.ShowWindowTitleBar(true);
this.ShowWindowClientArea(!this.Collapsed);
#endregion
}
/// <summary>
/// Create an auto-layout vertical slider that user can drag to select a value.
/// </summary>
/// <param name="label">label of the slider</param>
/// <param name="value">The value the slider shows.</param>
/// <param name="minValue">The value at the top end of the slider.</param>
/// <param name="maxValue">The value at the bottom end of the slider.</param>
/// <returns>The value set by the user.</returns>
/// <remarks>minValue <= value <= maxValue</remarks>
public static double VSlider(string label, double value, double minValue, double maxValue)
{
GUIContext g = GetCurrentContext();
Window window = GetCurrentWindow();
if (window.SkipItems)
{
return(value);
}
var id = window.GetID(label);
// style apply
var style = GUIStyle.Basic;
// rect
Size size = style.CalcSize(label, GUIState.Normal);
style.PushStretchFactor(true, 1);//+1
{
var minSilderHeight = 200;
size.Width = 20;
size.Height += minSilderHeight;
}
var rect = window.GetRect(id);
// interact
var spacing = GUISkin.Instance.InternalStyle.Get <double>(GUIStyleName._ControlLabelSpacing);
var labelHeight = GUISkin.Instance.InternalStyle.Get <double>(GUIStyleName._LabelHeight);
var sliderHeight = rect.Height - spacing - labelHeight;
if (sliderHeight <= 0)
{
sliderHeight = 1;
}
var sliderRect = new Rect(rect.X, rect.Y,
rect.Width,
sliderHeight);
bool hovered, held;
value = GUIBehavior.SliderBehavior(sliderRect, id, false, value, minValue, maxValue, out hovered, out held);
// render
var state = GUI.Normal;
if (hovered)
{
state = GUI.Hover;
}
if (g.ActiveId == id && Mouse.Instance.LeftButtonState == KeyState.Down)
{
state = GUI.Active;
}
GUIAppearance.DrawVSlider(rect, label, value, minValue, maxValue, state, sliderRect, labelHeight);
// style restore
style.PopStyle();//-1
return(value);
}
public static string TextBoxBehavior(int id, Rect rect, string text, out bool hovered, out bool active, out InputTextContext context, InputTextFlags flags = 0, Func <char, bool> checker = null)
{
GUIContext g = Form.current.uiContext;
active = false;
hovered = g.IsHovered(rect, id);
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed)
{
g.SetActiveID(id);
}
}
else
{
if (Mouse.Instance.LeftButtonPressed)
{
if (g.ActiveId == id)
{
g.SetActiveID(0);
}
}
}
if (g.ActiveId == id && g.InputTextState.inputTextContext.Id != id) //editing text box changed to TextBox<id>
{
g.InputTextState.stateMachine.CurrentState = "Active"; //reset state
g.InputTextState.inputTextContext = new InputTextContext() //reset input text context data
{
Id = id,
CaretIndex = 0,
SelectIndex = 0,
Selecting = false,
CaretPosition = Point.Zero,
Flags = flags,
Checker = checker,
Rect = rect,
Text = text
};
}
context = null;
if (g.ActiveId == id)
{
active = true;
var stateMachine = g.InputTextState.stateMachine;
context = g.InputTextState.inputTextContext;
context.Rect = rect;
// Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
// Down the line we should have a cleaner library-wide concept of Selected vs Active.
g.ActiveIdAllowOverlap = !Mouse.Instance.LeftButtonPressed;
#if INSPECT_STATE
var A = stateMachine.CurrentState;
#endif
if (Mouse.Instance.LeftButtonPressed)
{
stateMachine.MoveNext(TextBoxCommand.MoveCaret, context);
}
if (hovered && Mouse.Instance.LeftButtonState == KeyState.Down &&
stateMachine.CurrentState != TextBoxState.ActiveSelecting)
{
stateMachine.MoveNext(TextBoxCommand.MoveCaret, context);
stateMachine.MoveNext(TextBoxCommand.BeginSelect, context);
}
if (hovered && Mouse.Instance.LeftButtonState == KeyState.Up)
{
stateMachine.MoveNext(TextBoxCommand.EndSelect, context);
}
if (stateMachine.CurrentState == TextBoxState.Active)
{
stateMachine.MoveNext(TextBoxCommand.DoEdit, context);
}
if (stateMachine.CurrentState == TextBoxState.ActiveSelecting)
{
stateMachine.MoveNext(TextBoxCommand.DoSelect, context);
}
stateMachine.MoveNext(TextBoxCommand.MoveCaretKeyboard, context);
#if INSPECT_STATE
var B = stateMachine.CurrentState;
Debug.WriteLineIf(A != B,
string.Format("TextBox<{0}> {1}=>{2} CaretIndex: {3}, SelectIndex: {4}",
id, A, B, context.CaretIndex, context.SelectIndex));
#endif
return(context.Text);
}
return(text);
}
internal static bool DoPolygonButton(Rect rect, IReadOnlyList <Point> points, Rect textRect, string text)
{
Form form = Form.current;
GUIContext g = form.uiContext;
Window window = g.WindowManager.CurrentWindow;
DrawList d = window.DrawList;
int id = window.GetID(text);
var mousePos = Mouse.Instance.Position;
var clicked = false;
var hovered = MathEx.IsPointInPolygon(mousePos, points, new Vector(rect.X, rect.Y));
textRect.Offset(rect.X, rect.Y);
//control logic
g.KeepAliveID(id);
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed)//start track
{
g.SetActiveID(id);
}
if (Mouse.Instance.LeftButtonReleased)//end track
{
clicked = true;
g.SetActiveID(GUIContext.None);
}
}
// ui representation
var state = GUI.Normal;
if (hovered)
{
state = GUI.Hover;
if (g.ActiveId == id && Mouse.Instance.LeftButtonState == KeyState.Down)
{
state = GUI.Active;
}
}
// ui painting
{
var style = GUISkin.Instance[GUIControlName.PolygonButton];
d.PathClear();
foreach (var point in points)
{
d.PathMoveTo(point + new Vector(rect.X, rect.Y));
}
d.PathFill(style.FillColor);
d.PathClear();
foreach (var point in points)
{
d.PathMoveTo(point + new Vector(rect.X, rect.Y));
}
d.PathStroke(style.LineColor, true, 2);
d.DrawBoxModel(textRect, text, style, state);
}
return(clicked);
}
public static bool ButtonBehavior(Rect bb, int id, out bool outHovered, out bool outHeld, ButtonFlags flags = 0)
{
GUIContext g = Form.current.uiContext;
WindowManager w = g.WindowManager;
Window window = w.CurrentWindow;
if (flags.HaveFlag(ButtonFlags.Disabled))
{
outHovered = false;
outHeld = false;
if (g.ActiveId == id)
{
g.SetActiveID(0);
}
return(false);
}
if (!flags.HaveFlag(ButtonFlags.PressedOnClickRelease | ButtonFlags.PressedOnClick | ButtonFlags.PressedOnRelease | ButtonFlags.PressedOnDoubleClick))
{
flags |= ButtonFlags.PressedOnClickRelease;
}
bool pressed = false;
bool hovered = g.IsHovered(bb, id, flags.HaveFlag(ButtonFlags.FlattenChilds));
if (hovered)
{
g.SetHoverID(id);
if (!flags.HaveFlag(ButtonFlags.NoKeyModifiers) || (!Keyboard.Instance.KeyPressed(Key.LeftControl) && !Keyboard.Instance.KeyPressed(Key.LeftShift) && !Keyboard.Instance.KeyPressed(Key.LeftAlt)))
{
// | CLICKING | HOLDING with ButtonFlags.Repeat
// PressedOnClickRelease | <on release>* | <on repeat> <on repeat> .. (NOT on release) <-- MOST COMMON! (*) only if both click/release were over bounds
// PressedOnClick | <on click> | <on click> <on repeat> <on repeat> ..
// PressedOnRelease | <on release> | <on repeat> <on repeat> .. (NOT on release)
// PressedOnDoubleClick | <on dclick> | <on dclick> <on repeat> <on repeat> ..
if (flags.HaveFlag(ButtonFlags.PressedOnClickRelease) && Mouse.Instance.LeftButtonPressed)
{
g.SetActiveID(id, window); // Hold on ID
w.FocusWindow(window);
g.ActiveIdClickOffset = Mouse.Instance.Position - bb.Min;
}
if (((flags.HaveFlag(ButtonFlags.PressedOnClick) && Mouse.Instance.LeftButtonPressed) ||
(flags.HaveFlag(ButtonFlags.PressedOnDoubleClick) && Mouse.Instance.LeftButtonDoubleClicked)))
{
pressed = true;
g.SetActiveID(0);
w.FocusWindow(window);
}
if (flags.HaveFlag(ButtonFlags.PressedOnRelease) && Mouse.Instance.LeftButtonReleased)
{
if (!(flags.HaveFlag(ButtonFlags.Repeat) && Mouse.Instance.LeftButtonDownDurationPrev >= Keyboard.KeyRepeatDelay)) // Repeat mode trumps <on release>
{
pressed = true;
}
g.SetActiveID(0);
}
// 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
// Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
if (flags.HaveFlag(ButtonFlags.Repeat) && g.ActiveId == id && Mouse.Instance.LeftButtonDownDuration > 0.0f && g.IsMouseLeftButtonClicked(true))
{
pressed = true;
}
}
}
bool held = false;
if (g.ActiveId == id)
{
if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
held = true;
}
else
{
if (hovered && flags.HaveFlag(ButtonFlags.PressedOnClickRelease))
{
if (!(flags.HaveFlag(ButtonFlags.Repeat) && Mouse.Instance.LeftButtonDownDurationPrev >= Keyboard.KeyRepeatDelay)) // Repeat mode trumps <on release>
{
pressed = true;
}
}
g.SetActiveID(0);
}
}
// AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
if (hovered && flags.HaveFlag(ButtonFlags.AllowOverlapMode) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
{
hovered = pressed = held = false;
}
outHovered = hovered;
outHeld = held;
return(pressed);
}
public static bool Begin(string name, ref bool open, Point position, Size size, double bg_alpha = 1, WindowFlags flags = WindowFlags.VerticalScrollbar)
{
Form form = Form.current;
GUIContext g = form.uiContext;
WindowManager w = g.WindowManager;
Debug.Assert(name != null); // Window name required
Debug.Assert(g.Initialized); // Forgot to call NewFrame()
Debug.Assert(g.FrameCountEnded != g.FrameCount); // Called Render() or EndFrame() and haven't called NewFrame() again yet
if (flags.HaveFlag(WindowFlags.NoInputs))
{
flags |= WindowFlags.NoMove | WindowFlags.NoResize;
}
// Find or create
Window window = w.FindWindowByName(name) ?? w.CreateWindow(name, position, size, flags);
// Check if this is the first call of Begin
long current_frame = g.FrameCount;
bool first_begin_of_the_frame = (window.LastActiveFrame != current_frame);
if (first_begin_of_the_frame)
{
window.Flags = flags;
}
else
{
flags = window.Flags;
}
// Add to stack
Window parent_window = w.WindowStack.Count != 0 ? w.WindowStack[w.WindowStack.Count - 1] : null;
w.WindowStack.Add(window);
w.CurrentWindow = window;
Debug.Assert(parent_window != null || !flags.HaveFlag(WindowFlags.ChildWindow));
// Update known root window (if we are a child window, otherwise window == window->RootWindow)
int root_idx;
for (root_idx = w.WindowStack.Count - 1; root_idx > 0; root_idx--)
{
if (!(w.WindowStack[root_idx].Flags.HaveFlag(WindowFlags.ChildWindow)))
{
break;
}
}
window.RootWindow = w.WindowStack[root_idx];
// When reusing window again multiple times a frame, just append content (don't need to setup again)
if (first_begin_of_the_frame)
{
window.Active = true;
window.BeginCount = 0;
window.ClipRect = Rect.Big;
window.LastActiveFrame = current_frame;
// clear draw list, setup outer clip rect
window.DrawList.Clear();
window.DrawList.Init();
Rect fullScreenRect = new Rect(0, 0, form.ClientSize);
if (flags.HaveFlag(WindowFlags.ChildWindow) && !flags.HaveFlag(WindowFlags.ComboBox | WindowFlags.Popup))
{
window.DrawList.PushClipRect(parent_window.ClipRect, true);
window.ClipRect = window.DrawList.GetCurrentClipRect();
}
else
{
window.DrawList.PushClipRect(fullScreenRect, true);
window.ClipRect = window.DrawList.GetCurrentClipRect();
}
// draw outer clip rect
//window.DrawList.AddRect(window.ClipRect.TopLeft, window.ClipRect.BottomRight, Color.Blue);//test only
// Collapse window by double-clicking on title bar
if (!(flags.HaveFlag(WindowFlags.NoTitleBar)) && !(flags.HaveFlag(WindowFlags.NoCollapse)))
{
if (w.HoveredWindow == window && g.IsMouseHoveringRect(window.TitleBarRect) && Mouse.Instance.LeftButtonDoubleClicked)
{
window.Collapsed = !window.Collapsed;
w.FocusWindow(window);
}
}
else
{
window.Collapsed = false;
}
#region size
window.ApplySize(window.FullSize);
window.Size = window.Collapsed ? window.TitleBarRect.Size : window.FullSize;
#endregion
#region position
window.Position = new Point((int)window.PosFloat.X, (int)window.PosFloat.Y);
if (flags.HaveFlag(WindowFlags.ChildWindow))
{
window.Position = window.PosFloat = position;
window.Size = window.FullSize = size; // 'size' provided by user passed via BeginChild()->Begin().
}
#endregion
// Draw window + handle manual resize
GUIStyle style = window.Style;
GUIStyle titleBarStyle = window.TitleBarStyle;
Rect title_bar_rect = window.TitleBarRect;
float window_rounding = (float)style.Get <double>(GUIStyleName.WindowRounding);
if (window.Collapsed)
{
// Draw title bar only
window.DrawList.AddRectFilled(title_bar_rect.Min, title_bar_rect.Max, new Color(0.40f, 0.40f, 0.80f, 0.50f));
}
else
{
Color resize_col = Color.Clear;
double rezie_size = window.Style.Get <double>(GUIStyleName.ResizeGripSize);
double resize_corner_size = Math.Max(rezie_size * 1.35, window_rounding + 1.0 + rezie_size * 0.2);
if (!flags.HaveFlag(WindowFlags.AlwaysAutoResize) && !flags.HaveFlag(WindowFlags.NoResize))
{
// Manual resize
var br = window.Rect.BottomRight;
Rect resize_rect = new Rect(br - new Vector(resize_corner_size * 0.75f, resize_corner_size * 0.75f), br);
int resize_id = window.GetID("#RESIZE");
bool hovered, held;
GUIBehavior.ButtonBehavior(resize_rect, resize_id, out hovered, out held, ButtonFlags.FlattenChilds);
resize_col =
held ? style.Get <Color>(GUIStyleName.ResizeGripColor, GUIState.Active) :
hovered?style.Get <Color>(GUIStyleName.ResizeGripColor, GUIState.Hover) :
style.Get <Color>(GUIStyleName.ResizeGripColor);
if (hovered || held)
{
//Mouse.Instance.Cursor = Cursor.NeswResize;
}
if (held)
{
// We don't use an incremental MouseDelta but rather compute an absolute target size based on mouse position
var t = Mouse.Instance.Position - g.ActiveIdClickOffset - window.Position;
var new_size_width = t.X + resize_rect.Width;
var new_size_height = t.Y + resize_rect.Height;
new_size_width = MathEx.Clamp(new_size_width, 330, fullScreenRect.Width);//min size of a window is 145x235
new_size_height = MathEx.Clamp(new_size_height, 150, fullScreenRect.Height);
Size resize_size = new Size(new_size_width, new_size_height);
window.ApplySize(resize_size);
// adjust scroll parameters
var contentSize = window.ContentRect.Size;
if (contentSize != Size.Zero)
{
var vH = window.Rect.Height - window.TitleBarHeight - window.Style.BorderVertical - window.Style.PaddingVertical;
var cH = contentSize.Height;
if (cH > vH)
{
var oldScrollY = window.Scroll.Y;
oldScrollY = MathEx.Clamp(oldScrollY, 0, cH - vH);
window.Scroll.Y = oldScrollY;
}
}
}
window.Size = window.FullSize;
title_bar_rect = window.TitleBarRect;
}
// Window background
Color bg_color = style.BackgroundColor;
if (bg_alpha >= 0.0f)
{
bg_color.A = bg_alpha;
}
if (bg_color.A > 0.0f)
{
window.DrawList.AddRectFilled(window.Position + new Vector(0, window.TitleBarHeight), window.Rect.BottomRight, bg_color, window_rounding, flags.HaveFlag(WindowFlags.NoTitleBar) ? 15 : 4 | 8);
}
// Title bar
if (!flags.HaveFlag(WindowFlags.NoTitleBar))
{
window.DrawList.AddRectFilled(title_bar_rect.TopLeft, title_bar_rect.BottomRight,
w.FocusedWindow == window ?
titleBarStyle.Get <Color>(GUIStyleName.BackgroundColor, GUIState.Active) :
titleBarStyle.Get <Color>(GUIStyleName.BackgroundColor), window_rounding, 1 | 2);
}
// Render resize grip
// (after the input handling so we don't have a frame of latency)
if (!flags.HaveFlag(WindowFlags.NoResize))
{
Point br = window.Rect.BottomRight;
var borderBottom = window.Style.BorderBottom;
var borderRight = window.Style.BorderRight;
window.DrawList.PathLineTo(br + new Vector(-resize_corner_size, -borderBottom));
window.DrawList.PathLineTo(br + new Vector(-borderRight, -resize_corner_size));
window.DrawList.PathArcToFast(new Point(br.X - window_rounding - borderRight, br.Y - window_rounding - borderBottom), window_rounding, 0, 3);
window.DrawList.PathFill(resize_col);
}
// Scroll bar
if (flags.HaveFlag(WindowFlags.VerticalScrollbar))
{
//get content size without clip
var contentPosition = window.ContentRect.TopLeft;
var contentSize = window.ContentRect.Size;
if (contentSize != Size.Zero)
{
int id = window.GetID("#SCROLLY");
double scrollBarWidth = window.Style.Get <double>(GUIStyleName.ScrollBarWidth);
Point scroll_TopLeft = new Point(
window.Rect.Right - scrollBarWidth - window.Style.BorderRight - window.Style.PaddingRight,
window.Rect.Top + window.TitleBarHeight + window.Style.BorderTop + window.Style.PaddingTop);
var sH = window.Rect.Height - window.TitleBarHeight - window.Style.BorderVertical - window.Style.PaddingVertical - resize_corner_size;
var vH = window.Rect.Height - window.TitleBarHeight - window.Style.BorderVertical - window.Style.PaddingVertical;
Point scroll_BottomRight = scroll_TopLeft + new Vector(scrollBarWidth, sH);
Rect bgRect = new Rect(scroll_TopLeft, scroll_BottomRight);
var cH = contentSize.Height;
var top = window.Scroll.Y * sH / cH;
var height = sH * vH / cH;
if (height < sH)
{
// handle mouse click/drag
bool held = false;
bool hovered = false;
bool previously_held = (g.ActiveId == id);
GUIBehavior.ButtonBehavior(bgRect, id, out hovered, out held);
if (held)
{
top = Mouse.Instance.Position.Y - bgRect.Y - 0.5 * height;
top = MathEx.Clamp(top, 0, sH - height);
var targetScrollY = top * cH / sH;
window.SetWindowScrollY(targetScrollY);
}
Point scrollButton_TopLeft = scroll_TopLeft + new Vector(0, top);
Point scrllButton_BottomRight = scrollButton_TopLeft + new Vector(scrollBarWidth, height);
Rect buttonRect = new Rect(scrollButton_TopLeft, scrllButton_BottomRight);
//Draw vertical scroll bar and button
{
var bgColor = window.Style.Get <Color>(GUIStyleName.ScrollBarBackgroundColor);
var buttonColor = window.Style.Get <Color>(GUIStyleName.ScrollBarButtonColor, held ? GUIState.Active : hovered ? GUIState.Hover : GUIState.Normal);
window.DrawList.AddRectFilled(bgRect.TopLeft, buttonRect.TopRight, bgColor);
window.DrawList.AddRectFilled(buttonRect.TopLeft, buttonRect.BottomRight, buttonColor);
window.DrawList.AddRectFilled(buttonRect.BottomLeft, bgRect.BottomRight, bgColor);
}
}
else
{
var bgColor = window.Style.Get <Color>(GUIStyleName.ScrollBarBackgroundColor);
window.DrawList.AddRectFilled(bgRect.TopLeft, bgRect.BottomRight, bgColor);
}
}
}
window.ContentRect = Rect.Zero;
}
// draw title bar text
if (!flags.HaveFlag(WindowFlags.NoTitleBar))
{
var state = w.FocusedWindow == window ? GUIState.Active : GUIState.Normal;
window.DrawList.DrawBoxModel(title_bar_rect, name, titleBarStyle, state);
}
// Borders
if (flags.HaveFlag(WindowFlags.ShowBorders))
{
var state = w.FocusedWindow == window ? GUIState.Active : GUIState.Normal;
// window border
var borderColor = window.Style.Get <Color>(GUIStyleName.WindowBorderColor, state);
window.DrawList.AddRect(window.Position, window.Position + new Vector(window.Size.Width, window.Size.Height),
borderColor, window_rounding);
// window shadow
#if false
{
var state = w.FocusedWindow == window ? GUIState.Active : GUIState.Normal;
var shadowColor = window.Style.Get <Color>(GUIStyleName.WindowShadowColor, state);
var shadowWidth = window.Style.Get <double>(GUIStyleName.WindowShadowWidth, state);
var d = window.DrawList;
//top-left corner
d.AddRectFilledGradientTopLeftToBottomRight(window.Rect.TopLeft + new Vector(-shadowWidth, -shadowWidth), window.Rect.TopLeft, Color.Clear, shadowColor);
//top
d.AddRectFilledGradient(window.Rect.TopLeft + new Vector(0, -shadowWidth), window.Rect.TopRight, Color.Clear, shadowColor);
d.AddRectFilledGradient(window.Rect.BottomLeft, window.Rect.BottomRight + new Vector(0, shadowWidth), shadowColor, Color.Clear);
}
#endif
}
// Save clipped aabb so we can access it in constant-time in FindHoveredWindow()
window.WindowClippedRect = window.Rect;
window.WindowClippedRect.Intersect(window.ClipRect);
}
// Inner clipping rectangle
{
// We set this up after processing the resize grip so that our clip rectangle doesn't lag by a frame
// Note that if our window is collapsed we will end up with a null clipping rectangle which is the correct behavior.
Rect title_bar_rect = window.TitleBarRect;
const float border_size = 0;
var paddingHorizontal = window.Style.PaddingHorizontal;
// Force round to ensure that e.g. (int)(max.x-min.x) in user's render code produce correct result.
Rect clip_rect = new Rect(
new Point(Math.Floor(0.5f + title_bar_rect.Min.X + Math.Max(border_size, Math.Floor(paddingHorizontal * 0.5f))),
Math.Floor(0.5f + title_bar_rect.Max.Y + border_size)),
new Point(Math.Floor(0.5f + window.Position.X + window.Size.Width - Math.Max(border_size, Math.Floor(paddingHorizontal * 0.5f))),
Math.Floor(0.5f + window.Position.Y + window.Size.Height - border_size)));
window.DrawList.PushClipRect(clip_rect, true);
window.ClipRect = clip_rect;
//window.DrawList.AddRect(window.ClipRect.TopLeft, window.ClipRect.BottomRight, Color.Red);//test only
}
// Clear 'accessed' flag last thing
if (first_begin_of_the_frame)
{
window.Accessed = false;
}
window.BeginCount++;
// Child window can be out of sight and have "negative" clip windows.
// Mark them as collapsed so commands are skipped earlier (we can't manually collapse because they have no title bar).
if (flags.HaveFlag(WindowFlags.ChildWindow))
{
Debug.Assert(flags.HaveFlag(WindowFlags.NoTitleBar));
window.Collapsed = parent_window != null && parent_window.Collapsed;
}
window.StackLayout.Begin();
// Return false if we don't intend to display anything to allow user to perform an early out optimization
window.SkipItems = window.Collapsed || !window.Active;
return(!window.SkipItems);
}