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Viewports: Relaxed specs for backend supporting ImGuiBackendFlags_HasMouseHoveredViewport. Backends: SDL: Added support for simplified HasMouseHoveredViewport. (#1542, #4665)

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ocornut
2022-01-18 16:59:19 +01:00
parent 007a427e0a
commit 1338eb31f7
7 changed files with 56 additions and 25 deletions
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12
imgui.cpp
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@@ -12701,17 +12701,14 @@ static void ImGui::UpdateViewportsNewFrame()
{
viewport_hovered = g.IO.MouseHoveredViewport ? (ImGuiViewportP*)FindViewportByID(g.IO.MouseHoveredViewport) : NULL;
if (viewport_hovered && (viewport_hovered->Flags & ImGuiViewportFlags_NoInputs))
{
// Backend failed at honoring its contract if it returned a viewport with the _NoInputs flag.
IM_ASSERT(0);
viewport_hovered = FindHoveredViewportFromPlatformWindowStack(g.IO.MousePos);
}
viewport_hovered = FindHoveredViewportFromPlatformWindowStack(g.IO.MousePos); // Backend failed to handle _NoInputs viewport: revert to our fallback.
}
else
{
// If the backend doesn't know how to honor ImGuiViewportFlags_NoInputs, we do a search ourselves. Note that this search:
// A) won't take account of the possibility that non-imgui windows may be in-between our dragged window and our target window.
// B) uses LastFrameAsRefViewport as a flawed replacement for the last time a window was focused (we could/should fix that by introducing Focus functions in PlatformIO)
// B) won't take account of how the backend apply parent<>child relationship to secondary viewports, which affects their Z order.
// C) uses LastFrameAsRefViewport as a flawed replacement for the last time a window was focused (we could/should fix that by introducing Focus functions in PlatformIO)
viewport_hovered = FindHoveredViewportFromPlatformWindowStack(g.IO.MousePos);
}
if (viewport_hovered != NULL)
@@ -17663,7 +17660,8 @@ void ImGui::ShowMetricsWindow(bool* p_open)
TreePop();
}
if (TreeNode("Inferred order (front-to-back)"))
BulletText("MouseViewport: 0x%08X (UserHovered 0x%08X, LastHovered 0x%08X)", g.MouseViewport ? g.MouseViewport->ID : 0, g.IO.MouseHoveredViewport, g.MouseLastHoveredViewport ? g.MouseLastHoveredViewport->ID : 0);
if (TreeNode("Inferred Z order (front-to-back)"))
{
static ImVector<ImGuiViewportP*> viewports;
viewports.resize(g.Viewports.Size);