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 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 BuildRedButton(this ImGui gui, Icon icon, float size = 1.5f)
{
Rect iconRect;
using (gui.EnterGroup(new Padding(0.3f)))
iconRect = gui.AllocateRect(size, size, RectAlignment.Middle);
var evt = gui.BuildButton(gui.lastRect, SchemeColor.None, SchemeColor.Error);
if (gui.isBuilding)
{
gui.DrawIcon(iconRect, icon, gui.IsMouseOver(gui.lastRect) ? SchemeColor.ErrorText : SchemeColor.Error);
}
return(evt);
}
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 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);
}