/// <summary>
/// Draw a preview graph texture on the preview pane
/// </summary>
/// <param name="plot">The graph being drawn</param>
/// <param name="xPadding">horizontal padding</param>
/// <param name="captionHeight">height of the caption</param>
/// <param name="captionBackgroundcolor">contrast background colour of the caption</param>
/// <param name="canHover">output flag states if we can safely draw a mouseover tooltip</param>
/// <param name="mainWidgetSize">Size of the maingraph widget, used for projecting the zoom envelope</param>
/// <returns>The graph was clicked</returns>
private bool DrawPreviewGraph(PlottedGraph plot, float xPadding, float captionHeight, uint captionBackgroundcolor, out bool canHover, Vector2 mainWidgetSize)
{
ImDrawListPtr imdp = ImGui.GetWindowDrawList(); //draw on and clipped to this window
bool clicked = false;
canHover = false;
if (plot == null)
{
return(clicked);
}
int graphNodeCount = plot.GraphNodeCount();
if (graphNodeCount == 0)
{
return(clicked);
}
plot.GetLatestTexture(out Texture previewTexture);
if (previewTexture == null)
{
return(clicked);
}
bool isSelected = plot.TID == selectedGraphTID;
canHover = true;
//copy in the actual rendered graph
ImGui.SetCursorPosY(ImGui.GetCursorPosY());
Vector2 subGraphPosition = ImGui.GetCursorScreenPos() + new Vector2(xPadding, 0);
IntPtr CPUframeBufferTextureId = _ImGuiController !.GetOrCreateImGuiBinding(_gd !.ResourceFactory, previewTexture, $"PreviewPlot{plot.TID}");
imdp.AddImage(user_texture_id: CPUframeBufferTextureId,
p_min: subGraphPosition,
p_max: new Vector2(subGraphPosition.X + EachGraphWidth, subGraphPosition.Y + EachGraphHeight),
uv_min: new Vector2(0, 1),
uv_max: new Vector2(1, 0));
float borderThickness = Themes.GetThemeSize(Themes.eThemeSize.PreviewSelectedBorder);
float halfBorderThickness = (float)Math.Floor(borderThickness / 2f);
if (isSelected)
{
DrawPreviewZoomEnvelope(plot, subGraphPosition);
//Draw the thicker selected graph border
if (borderThickness > 0)
{
imdp.AddRect(
p_min: new Vector2(subGraphPosition.X + halfBorderThickness, subGraphPosition.Y + halfBorderThickness),
p_max: new Vector2((subGraphPosition.X + EachGraphWidth - halfBorderThickness), subGraphPosition.Y + EachGraphHeight - halfBorderThickness),
col: GetGraphBorderColour(plot), 0, ImDrawFlags.None, borderThickness);
}
}
//write the caption
string Caption = $"TID:{plot.TID} {graphNodeCount} nodes {(isSelected ? "[Selected]" : "")}";
ImGui.SetCursorPosX(ImGui.GetCursorPosX());
Vector2 captionBGStart = subGraphPosition + new Vector2(borderThickness, borderThickness);
Vector2 captionBGEnd = new Vector2((captionBGStart.X + EachGraphWidth - borderThickness * 2), captionBGStart.Y + captionHeight);
imdp.AddRectFilled(p_min: captionBGStart, p_max: captionBGEnd, col: captionBackgroundcolor);
ImGui.PushStyleColor(ImGuiCol.Text, Themes.GetThemeColourUINT(Themes.eThemeColour.PreviewText));
ImGui.SetCursorPosX(ImGui.GetCursorPosX() + CONSTANTS.UI.PREVIEW_PANE_X_PADDING + borderThickness + 1);
ImGui.SetCursorPosY(ImGui.GetCursorPosY() + borderThickness);
ImGui.Text(Caption);
ImGui.PopStyleColor();
ImGui.SetCursorPosX(ImGui.GetCursorPosX() + EachGraphWidth - 48);
//live thread activity plot
if (ActiveTrace is not null && !ActiveTrace.WasLoadedFromSave)
{
ImGui.SetCursorPosY(ImGui.GetCursorPosY() - captionHeight);
float maxVal;
float[]? invalues = null;
if (plot.InternalProtoGraph.TraceReader != null)
{
plot.InternalProtoGraph.TraceReader.RecentMessageRates(out invalues);
}
if (invalues == null || invalues.Length == 0)
{
invalues = new List <float>()
{
0, 0, 0, 0, 0
}.ToArray();
maxVal = 100;
}
else
{
maxVal = invalues.Max();
}
ImGui.PushStyleColor(ImGuiCol.FrameBg, captionBackgroundcolor);
ImGui.PlotLines("", ref invalues[0], invalues.Length, 0, "", 0, maxVal, new Vector2(40, captionHeight));
if (ImGui.IsItemHovered())
{
canHover = false; //The PlotLines widget doesn't allow disabling the mouseover, so have to prevent our mousover to avoid a merged tooltip
}
ImGui.PopStyleColor();
}
//invisible button to detect graph click
ImGui.SetCursorPos(new Vector2(1, ImGui.GetCursorPosY() - (float)(captionHeight)));
if (ImGui.InvisibleButton("PrevGraphBtn" + plot.TID, new Vector2(EachGraphWidth, EachGraphHeight - 2)) || ImGui.IsItemActive())
{
clicked = true;
if (isSelected)
{
Vector2 clickPos = ImGui.GetMousePos();
Vector2 clickOffset = clickPos - subGraphPosition;
clickOffset.Y = EachGraphHeight - clickOffset.Y;
plot.MoveCameraToPreviewClick(clickOffset, new Vector2(EachGraphWidth, EachGraphHeight),
mainGraphWidgetSize: mainWidgetSize, PreviewProjection);
}
}
return(clicked);
}
