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);
}
}
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 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);
}
