void DoViewport()
{
var szX = (int)ImGui.GetWindowContentRegionWidth();
var szY = (int)ImGui.GetWindowHeight();
if (rtX != szX || rtY != szY)
{
rtX = szX;
rtY = szY;
if (renderTarget != null)
{
ImGuiHelper.DeregisterTexture(renderTarget.Texture);
renderTarget.Dispose();
}
renderTarget = new RenderTarget2D(rtX, rtY);
renderTargetImage = ImGuiHelper.RegisterTexture(renderTarget.Texture);
}
mainWindow.RenderState.RenderTarget = renderTarget;
mainWindow.Viewport.Push(0, 0, rtX, rtY);
mainWindow.RenderState.ClearColor = Color4.Black;
mainWindow.RenderState.ClearAll();
//Do drawing
if (widget != null)
{
context.GlobalTime = TimeSpan.FromSeconds(mainWindow.TotalTime);
context.ViewportWidth = rtX;
context.ViewportHeight = rtY;
context.RenderWidget();
}
//
mainWindow.Viewport.Pop();
mainWindow.RenderState.RenderTarget = null;
//We don't use ImageButton because we need to be specific about sizing
var cPos = ImGui.GetCursorPos();
ImGui.Image((IntPtr)renderTargetImage, new Vector2(rtX, rtY), new Vector2(0, 1), new Vector2(1, 0));
ImGui.SetCursorPos(cPos);
var wPos = ImGui.GetWindowPos();
var mX = (int)(mainWindow.Mouse.X - cPos.X - wPos.X);
var mY = (int)(mainWindow.Mouse.Y - cPos.Y - wPos.Y);
ImGui.InvisibleButton("##renderThing", new Vector2(rtX, rtY));
if (ImGui.IsItemHovered())
{
context.Update(null, TimeSpan.FromSeconds(mainWindow.TotalTime), mX, mY, false);
if (ImGui.IsItemClicked(0))
{
context.OnMouseClick();
}
var isDown = ImGui.IsMouseDown(0);
if (lastDown && !isDown)
{
context.OnMouseUp();
}
if (isDown && !lastDown)
{
context.OnMouseDown();
}
context.MouseLeftDown = isDown;
lastDown = isDown;
}
else
{
context.Update(null, TimeSpan.FromSeconds(mainWindow.TotalTime), 0, 0, false);
context.MouseLeftDown = false;
if (lastDown)
{
lastDown = false;
context.OnMouseUp();
}
}
}
void Player(double delta)
{
bool childopened = true;
ImGui.Begin("playwindow", ref childopened,
ImGuiWindowFlags.NoTitleBar |
ImGuiWindowFlags.NoSavedSettings |
ImGuiWindowFlags.NoBringToFrontOnFocus |
ImGuiWindowFlags.NoMove |
ImGuiWindowFlags.NoResize);
var szX = Math.Max((int)ImGui.GetWindowContentRegionWidth(), 32);
var szY = Math.Max((int)ImGui.GetWindowHeight() - (int)(20 * ImGuiHelper.Scale), 32);
if (rtX != szX || rtY != szY)
{
rtX = szX;
rtY = szY;
if (renderTarget != null)
{
ImGuiHelper.DeregisterTexture(renderTarget.Texture);
renderTarget.Dispose();
}
renderTarget = new RenderTarget2D(rtX, rtY);
renderTargetImage = ImGuiHelper.RegisterTexture(renderTarget.Texture);
}
RenderContext.RenderTarget = renderTarget;
RenderContext.PushViewport(0, 0, rtX, rtY);
RenderContext.ClearColor = Color4.Black;
RenderContext.ClearAll();
//Do drawing
_playContext.GlobalTime = TotalTime;
_playContext.ViewportWidth = rtX;
_playContext.ViewportHeight = rtY;
_playContext.RenderWidget(delta);
//
RenderContext.PopViewport();
RenderContext.RenderTarget = null;
//We don't use ImageButton because we need to be specific about sizing
var cPos = ImGui.GetCursorPos();
ImGui.Image((IntPtr)renderTargetImage, new Vector2(rtX, rtY), new Vector2(0, 1), new Vector2(1, 0));
ImGui.SetCursorPos(cPos);
var wPos = ImGui.GetWindowPos();
var mX = (int)(Mouse.X - cPos.X - wPos.X);
var mY = (int)(Mouse.Y - cPos.Y - wPos.Y);
ImGui.InvisibleButton("##renderThing", new Vector2(rtX, rtY));
if (ImGui.IsItemHovered())
{
if (ImGui.GetIO().MouseWheel != 0)
{
_playContext.OnMouseWheel(ImGui.GetIO().MouseWheel);
}
_playContext.Update(null, TotalTime, mX, mY, false);
mouseWanted = _playContext.MouseWanted(mX, mY);
if (ImGui.IsItemClicked(0))
{
_playContext.OnMouseClick();
}
var isDown = ImGui.IsMouseDown(0);
if (lastDown && !isDown)
{
_playContext.OnMouseUp();
}
if (isDown && !lastDown)
{
_playContext.OnMouseDown();
}
_playContext.MouseLeftDown = isDown;
lastDown = isDown;
}
else
{
mouseWanted = false;
_playContext.Update(null, TotalTime, 0, 0, false);
_playContext.MouseLeftDown = false;
if (lastDown)
{
lastDown = false;
_playContext.OnMouseUp();
}
}
ImGui.End();
}