public static bool BuildLink(this ImGui gui, string text)
{
gui.BuildText(text, color: SchemeColor.Link);
var rect = gui.lastRect;
switch (gui.action)
{
case ImGuiAction.MouseMove:
gui.ConsumeMouseOver(rect, RenderingUtils.cursorHand);
break;
case ImGuiAction.MouseDown:
if (gui.actionParameter == SDL.SDL_BUTTON_LEFT)
{
gui.ConsumeMouseDown(rect);
}
break;
case ImGuiAction.MouseUp:
if (gui.ConsumeMouseUp(rect))
{
return(true);
}
break;
case ImGuiAction.Build:
if (gui.IsMouseOver(rect))
{
gui.DrawRectangle(new Rect(rect.X, rect.Bottom - 0.2f, rect.Width, 0.1f), SchemeColor.Link);
}
break;
}
return(false);
}
public static Event BuildButton(this ImGui gui, Rect rect, SchemeColor normal, SchemeColor over, SchemeColor down = SchemeColor.None, uint button = SDL.SDL_BUTTON_LEFT)
{
if (button == 0)
{
button = (uint)InputSystem.Instance.mouseDownButton;
}
switch (gui.action)
{
case ImGuiAction.MouseMove:
var wasOver = gui.IsMouseOver(rect);
return(gui.ConsumeMouseOver(rect, RenderingUtils.cursorHand) && !wasOver ? Event.MouseOver : Event.None);
case ImGuiAction.MouseDown:
return(gui.actionParameter == button && gui.ConsumeMouseDown(rect, button) ? Event.MouseDown : Event.None);
case ImGuiAction.MouseUp:
return(gui.actionParameter == button && gui.ConsumeMouseUp(rect, true, button) ? Event.Click : Event.None);
case ImGuiAction.Build:
var color = gui.IsMouseOver(rect) ? (down != SchemeColor.None && gui.IsMouseDown(rect, button)) ? down : over : normal;
gui.DrawRectangle(rect, color);
return(Event.None);
default:
return(Event.None);
}
}
public static bool OnClick(this ImGui gui, Rect rect)
{
if (gui.action == ImGuiAction.MouseUp)
{
return(gui.ConsumeMouseUp(rect));
}
if (gui.action == ImGuiAction.MouseDown && gui.actionParameter == SDL.SDL_BUTTON_LEFT)
{
gui.ConsumeMouseDown(rect);
}
return(false);
}
public static bool InitiateDrag <T>(this ImGui gui, Rect moveHandle, Rect contents, T index, SchemeColor backgroundColor = SchemeColor.PureBackground)
{
if (gui.action == ImGuiAction.MouseDown)
{
gui.ConsumeMouseDown(moveHandle);
}
if (gui.ShouldEnterDrag(moveHandle) || (gui.action == ImGuiAction.Build && gui.IsDragging(index)))
{
gui.SetDraggingArea(contents, index, backgroundColor);
return(true);
}
return(false);
}
public static bool BuildSlider(this ImGui gui, float value, out float newValue, float width = 10f)
{
var sliderRect = gui.AllocateRect(width, 2f, RectAlignment.Full);
var handleStart = (sliderRect.Width - 1f) * value;
var handleRect = new Rect(sliderRect.X + handleStart, sliderRect.Y, 1f, sliderRect.Height);
var update = false;
newValue = value;
switch (gui.action)
{
case ImGuiAction.Build:
gui.DrawRectangle(handleRect, gui.IsMouseOverOrDown(sliderRect) ? SchemeColor.Background : SchemeColor.PureBackground, RectangleBorder.Thin);
sliderRect.Y += (sliderRect.Height - 0.3f) / 2f;
sliderRect.Height = 0.3f;
gui.DrawRectangle(sliderRect, SchemeColor.Grey);
break;
case ImGuiAction.MouseMove:
if (gui.IsMouseDown(sliderRect))
{
update = true;
}
else
{
gui.ConsumeMouseOver(sliderRect, RenderingUtils.cursorHand);
}
break;
case ImGuiAction.MouseDown:
if (gui.IsMouseOver(sliderRect))
{
gui.ConsumeMouseDown(sliderRect);
update = true;
}
break;
}
if (!update)
{
return(false);
}
var positionX = (gui.mousePosition.X - sliderRect.X - 0.5f) / (sliderRect.Width - 1f);
newValue = MathUtils.Clamp(positionX, 0f, 1f);
gui.Rebuild();
return(true);
}
public static bool BuildButtonClick(this ImGui gui, Rect rect, uint button = SDL.SDL_BUTTON_LEFT)
{
if (gui.actionParameter == button)
{
if (gui.action == ImGuiAction.MouseDown)
{
gui.ConsumeMouseDown(rect);
}
else if (gui.action == ImGuiAction.MouseUp)
{
return(gui.ConsumeMouseUp(rect));
}
}
return(false);
}
private void BuildHeaderResizer(ImGui gui, DataColumn <TData> column, Rect rect)
{
switch (gui.action)
{
case ImGuiAction.Build:
var center = rect.X + rect.Width * 0.5f;
if (gui.IsMouseDown(rect, SDL.SDL_BUTTON_LEFT))
{
var unclampedWidth = gui.mousePosition.X - rect.Center.X + column.width;
var clampedWidth = MathUtils.Clamp(unclampedWidth, column.minWidth, column.maxWidth);
center = center - column.width + clampedWidth;
}
var viewRect = new Rect(center - 0.1f, rect.Y, 0.2f, rect.Height);
gui.DrawRectangle(viewRect, SchemeColor.GreyAlt);
break;
case ImGuiAction.MouseMove:
gui.ConsumeMouseOver(rect, RenderingUtils.cursorHorizontalResize);
if (gui.IsMouseDown(rect, SDL.SDL_BUTTON_LEFT))
{
gui.Rebuild();
}
break;
case ImGuiAction.MouseDown:
gui.ConsumeMouseDown(rect, cursor: RenderingUtils.cursorHorizontalResize);
break;
case ImGuiAction.MouseUp:
if (gui.ConsumeMouseUp(rect, false))
{
var unclampedWidth = gui.mousePosition.X - rect.Center.X + column.width;
column.width = MathUtils.Clamp(unclampedWidth, column.minWidth, column.maxWidth);
contentGui?.Rebuild();
}
break;
}
}
public bool BuildTextInput(string text, out string newText, string placeholder, FontFile.FontSize fontSize, bool delayed, Icon icon, Padding padding, RectAlignment alignment, SchemeColor color)
{
newText = text;
Rect textRect, realTextRect;
using (gui.EnterGroup(padding, RectAllocator.LeftRow))
{
var lineSize = gui.PixelsToUnits(fontSize.lineSize);
if (icon != Icon.None)
{
gui.BuildIcon(icon, lineSize, color + 3);
}
textRect = gui.RemainingRow(0.3f).AllocateRect(0, lineSize, RectAlignment.MiddleFullRow);
}
var boundingRect = gui.lastRect;
var focused = rect == boundingRect;
if (focused && this.text == null)
{
this.text = text ?? "";
SetCaret(0, this.text.Length);
}
switch (gui.action)
{
case ImGuiAction.MouseDown:
if (gui.actionParameter != SDL.SDL_BUTTON_LEFT)
{
break;
}
if (gui.ConsumeMouseDown(boundingRect))
{
SetFocus(boundingRect, text ?? "");
GetTextParameters(this.text, textRect, fontSize, alignment, out _, out _, out _, out realTextRect);
SetCaret(FindCaretIndex(text, gui.mousePosition.X - realTextRect.X, fontSize, textRect.Width));
}
break;
case ImGuiAction.MouseMove:
if (focused && gui.actionParameter == SDL.SDL_BUTTON_LEFT)
{
GetTextParameters(this.text, textRect, fontSize, alignment, out _, out _, out _, out realTextRect);
SetCaret(caret, FindCaretIndex(this.text, gui.mousePosition.X - realTextRect.X, fontSize, textRect.Width));
}
gui.ConsumeMouseOver(boundingRect, RenderingUtils.cursorCaret, false);
break;
case ImGuiAction.Build:
var textColor = color + 2;
string textToBuild;
if (focused)
{
textToBuild = this.text;
}
else if (string.IsNullOrEmpty(text))
{
textToBuild = placeholder;
textColor = color + 3;
}
else
{
textToBuild = text;
}
GetTextParameters(textToBuild, textRect, fontSize, alignment, out var cachedText, out var scale, out var textWidth, out realTextRect);
if (cachedText != null)
{
gui.DrawRenderable(realTextRect, cachedText, textColor);
}
if (focused)
{
if (selectionAnchor != caret)
{
var left = GetCharacterPosition(Math.Min(selectionAnchor, caret), fontSize, textWidth) * scale;
var right = GetCharacterPosition(Math.Max(selectionAnchor, caret), fontSize, textWidth) * scale;
gui.DrawRectangle(new Rect(left + realTextRect.X, realTextRect.Y, right - left, realTextRect.Height), SchemeColor.TextSelection);
}
else
{
if (nextCaretTimer <= Ui.time)
{
nextCaretTimer = Ui.time + 500;
caretVisible = !caretVisible;
}
gui.SetNextRebuild(nextCaretTimer);
if (caretVisible)
{
var caretPosition = GetCharacterPosition(caret, fontSize, textWidth) * scale;
gui.DrawRectangle(new Rect(caretPosition + realTextRect.X - 0.05f, realTextRect.Y, 0.1f, realTextRect.Height), color + 2);
}
}
}
gui.DrawRectangle(boundingRect, color);
break;
}
if (boundingRect == prevRect)
{
var changed = text != prevText;
if (changed)
{
newText = prevText;
}
prevRect = default;
prevText = null;
return(changed);
}
if (focused && !delayed && this.text != text)
{
newText = this.text;
return(true);
}
return(false);
}