public static Event BuildRedButton(this ImGui gui, string text)
{
Rect textRect;
TextCache cache;
using (gui.EnterGroup(DefaultButtonPadding))
textRect = gui.AllocateTextRect(out cache, text, align: RectAlignment.Middle);
var evt = gui.BuildButton(gui.lastRect, SchemeColor.None, SchemeColor.Error);
if (gui.isBuilding)
{
gui.DrawRenderable(textRect, cache, gui.IsMouseOver(gui.lastRect) ? SchemeColor.ErrorText : SchemeColor.Error);
}
return(evt);
}
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);
}