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Refactor: Move viewport code under other subsystem to simplify merging (3) (moving in multiple commits to make diff/patch behave nicely)

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docking
omar 6 years ago
parent bdf60dac6a
commit 54a129a2e2
1 changed files with 240 additions and 240 deletions
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480
imgui.cpp
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@ -7791,246 +7791,6 @@ ImVec2 ImGui::FindBestWindowPosForPopup(ImGuiWindow* window)
// [SECTION] VIEWPORTS, PLATFORM WINDOWS
//-----------------------------------------------------------------------------
// FIXME-VIEWPORT: This is all super messy and ought to be clarified or rewritten.
static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
{
ImGuiContext& g = *GImGui;
ImGuiWindowFlags flags = window->Flags;
window->ViewportAllowPlatformMonitorExtend = -1;
// Restore main viewport if multi-viewport is not supported by the back-end
ImGuiViewportP* main_viewport = g.Viewports[0];
if (!(g.ConfigFlagsForFrame & ImGuiConfigFlags_ViewportsEnable))
{
SetWindowViewport(window, main_viewport);
return;
}
window->ViewportOwned = false;
// Appearing popups reset their viewport so they can inherit again
if ((flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_Tooltip)) && window->Appearing)
{
window->Viewport = NULL;
window->ViewportId = 0;
}
if (!g.NextWindowData.ViewportCond)
{
// By default inherit from parent window
if (window->Viewport == NULL && window->ParentWindow)
window->Viewport = window->ParentWindow->Viewport;
// Attempt to restore saved viewport id (= window that hasn't been activated yet), try to restore the viewport based on saved 'window->ViewportPos' restored from .ini file
if (window->Viewport == NULL && window->ViewportId != 0)
{
window->Viewport = (ImGuiViewportP*)FindViewportByID(window->ViewportId);
if (window->Viewport == NULL && window->ViewportPos.x != FLT_MAX && window->ViewportPos.y != FLT_MAX)
window->Viewport = AddUpdateViewport(window, window->ID, window->ViewportPos, window->Size, ImGuiViewportFlags_None);
}
}
if (g.NextWindowData.ViewportCond)
{
// Code explicitly request a viewport
window->Viewport = (ImGuiViewportP*)FindViewportByID(g.NextWindowData.ViewportId);
window->ViewportId = g.NextWindowData.ViewportId; // Store ID even if Viewport isn't resolved yet.
}
else if ((flags & ImGuiWindowFlags_ChildWindow) || (flags & ImGuiWindowFlags_ChildMenu))
{
// Always inherit viewport from parent window
window->Viewport = window->ParentWindow->Viewport;
}
else if (flags & ImGuiWindowFlags_Tooltip)
{
window->Viewport = g.MouseViewport;
}
else if (GetWindowAlwaysWantOwnViewport(window))
{
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_None);
}
else if (g.MovingWindow && g.MovingWindow->RootWindow == window && IsMousePosValid())
{
if (window->Viewport != NULL && window->Viewport->Window == window)
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_None);
}
else
{
// Merge into host viewport?
// We cannot test window->ViewportOwned as it set lower in the function.
bool try_to_merge_into_host_viewport = (window->Viewport && window == window->Viewport->Window && g.ActiveId == 0);
if (try_to_merge_into_host_viewport)
UpdateTryMergeWindowIntoHostViewport(window, g.Viewports[0]);
}
// Fallback to default viewport
if (window->Viewport == NULL)
window->Viewport = main_viewport;
// Mark window as allowed to protrude outside of its viewport and into the current monitor
if (flags & (ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup))
{
// We need to take account of the possibility that mouse may become invalid.
// Popups/Tooltip always set ViewportAllowPlatformMonitorExtend so GetWindowAllowedExtentRect() will return full monitor bounds.
ImVec2 mouse_ref = (flags & ImGuiWindowFlags_Tooltip) ? g.IO.MousePos : g.BeginPopupStack.back().OpenMousePos;
bool use_mouse_ref = (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow);
bool mouse_valid = IsMousePosValid(&mouse_ref);
if ((window->Appearing || (flags & ImGuiWindowFlags_Tooltip)) && (!use_mouse_ref || mouse_valid))
window->ViewportAllowPlatformMonitorExtend = FindPlatformMonitorForPos((use_mouse_ref && mouse_valid) ? mouse_ref : NavCalcPreferredRefPos());
else
window->ViewportAllowPlatformMonitorExtend = window->Viewport->PlatformMonitor;
}
else if (window->Viewport && window != window->Viewport->Window && window->Viewport->Window && !(flags & ImGuiWindowFlags_ChildWindow))
{
// When called from Begin() we don't have access to a proper version of the Hidden flag yet, so we replicate this code.
const bool will_be_visible = (window->DockIsActive && !window->DockTabIsVisible) ? false : true;
if ((window->Flags & ImGuiWindowFlags_DockNodeHost) && window->Viewport->LastFrameActive < g.FrameCount && will_be_visible)
{
// Steal/transfer ownership
//IMGUI_DEBUG_LOG("[%05d] Window '%s' steal Viewport %08X from Window '%s'\n", g.FrameCount, window->Name, window->Viewport->ID, window->Viewport->Window->Name);
window->Viewport->Window = window;
window->Viewport->ID = window->ID;
window->Viewport->LastNameHash = 0;
}
else if (!UpdateTryMergeWindowIntoHostViewport(window, g.Viewports[0])) // Merge?
{
// New viewport
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoFocusOnAppearing);
}
}
// Regular (non-child, non-popup) windows by default are also allowed to protrude
// Child windows are kept contained within their parent.
else if (window->ViewportAllowPlatformMonitorExtend < 0 && (flags & ImGuiWindowFlags_ChildWindow) == 0)
window->ViewportAllowPlatformMonitorExtend = window->Viewport->PlatformMonitor;
// Update flags
window->ViewportOwned = (window == window->Viewport->Window);
window->ViewportId = window->Viewport->ID;
// If the OS window has a title bar, hide our imgui title bar
//if (window->ViewportOwned && !(window->Viewport->Flags & ImGuiViewportFlags_NoDecoration))
// window->Flags |= ImGuiWindowFlags_NoTitleBar;
}
// Called by user at the end of the main loop, after EndFrame()
// This will handle the creation/update of all OS windows via function defined in the ImGuiPlatformIO api.
void ImGui::UpdatePlatformWindows()
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.FrameCountEnded == g.FrameCount && "Forgot to call Render() or EndFrame() before UpdatePlatformWindows()?");
IM_ASSERT(g.FrameCountPlatformEnded < g.FrameCount);
g.FrameCountPlatformEnded = g.FrameCount;
if (!(g.ConfigFlagsForFrame & ImGuiConfigFlags_ViewportsEnable))
return;
// Create/resize/destroy platform windows to match each active viewport.
// Skip the main viewport (index 0), which is always fully handled by the application!
for (int i = 1; i < g.Viewports.Size; i++)
{
ImGuiViewportP* viewport = g.Viewports[i];
// Destroy platform window if the viewport hasn't been submitted or if it is hosting a hidden window (the implicit/fallback Debug window will be registered its viewport then be disabled)
bool destroy_platform_window = false;
destroy_platform_window |= (viewport->LastFrameActive < g.FrameCount - 1);
destroy_platform_window |= (viewport->Window && !IsWindowActiveAndVisible(viewport->Window));
if (destroy_platform_window)
{
DestroyPlatformWindow(viewport);
continue;
}
// New windows that appears directly in a new viewport won't always have a size on their first frame
if (viewport->LastFrameActive < g.FrameCount || viewport->Size.x <= 0 || viewport->Size.y <= 0)
continue;
// Create window
bool is_new_platform_window = (viewport->PlatformWindowCreated == false);
if (is_new_platform_window)
{
//IMGUI_DEBUG_LOG("Create Platform Window %08X (%s)\n", viewport->ID, viewport->Window ? viewport->Window->Name : "n/a");
g.PlatformIO.Platform_CreateWindow(viewport);
if (g.PlatformIO.Renderer_CreateWindow != NULL)
g.PlatformIO.Renderer_CreateWindow(viewport);
viewport->LastNameHash = 0;
viewport->LastPlatformPos = viewport->LastPlatformSize = ImVec2(FLT_MAX, FLT_MAX); // By clearing those we'll enforce a call to Platform_SetWindowPos/Size below, before Platform_ShowWindow (FIXME: Is that necessary?)
viewport->LastRendererSize = viewport->Size; // We don't need to call Renderer_SetWindowSize() as it is expected Renderer_CreateWindow() already did it.
viewport->PlatformWindowCreated = true;
}
// Apply Position and Size (from ImGui to Platform/Renderer back-ends)
if ((viewport->LastPlatformPos.x != viewport->Pos.x || viewport->LastPlatformPos.y != viewport->Pos.y) && !viewport->PlatformRequestMove)
g.PlatformIO.Platform_SetWindowPos(viewport, viewport->Pos);
if ((viewport->LastPlatformSize.x != viewport->Size.x || viewport->LastPlatformSize.y != viewport->Size.y) && !viewport->PlatformRequestResize)
g.PlatformIO.Platform_SetWindowSize(viewport, viewport->Size);
if ((viewport->LastRendererSize.x != viewport->Size.x || viewport->LastRendererSize.y != viewport->Size.y) && g.PlatformIO.Renderer_SetWindowSize)
g.PlatformIO.Renderer_SetWindowSize(viewport, viewport->Size);
viewport->LastPlatformPos = viewport->Pos;
viewport->LastPlatformSize = viewport->LastRendererSize = viewport->Size;
// Update title bar (if it changed)
if (ImGuiWindow* window_for_title = GetWindowForTitleDisplay(viewport->Window))
{
const char* title_begin = window_for_title->Name;
char* title_end = (char*)(intptr_t)FindRenderedTextEnd(title_begin);
const ImGuiID title_hash = ImHashStr(title_begin, title_end - title_begin);
if (viewport->LastNameHash != title_hash)
{
char title_end_backup_c = *title_end;
*title_end = 0; // Cut existing buffer short instead of doing an alloc/free, no small gain.
g.PlatformIO.Platform_SetWindowTitle(viewport, title_begin);
*title_end = title_end_backup_c;
viewport->LastNameHash = title_hash;
}
}
// Update alpha (if it changed)
if (viewport->LastAlpha != viewport->Alpha && g.PlatformIO.Platform_SetWindowAlpha)
g.PlatformIO.Platform_SetWindowAlpha(viewport, viewport->Alpha);
viewport->LastAlpha = viewport->Alpha;
// Optional, general purpose call to allow the back-end to perform general book-keeping even if things haven't changed.
if (g.PlatformIO.Platform_UpdateWindow)
g.PlatformIO.Platform_UpdateWindow(viewport);
if (is_new_platform_window)
{
// On startup ensure new platform window don't steal focus (give it a few frames, as nested contents may lead to viewport being created a few frames late)
if (g.FrameCount < 3)
viewport->Flags |= ImGuiViewportFlags_NoFocusOnAppearing;
// Show window
g.PlatformIO.Platform_ShowWindow(viewport);
// Even without focus, we assume the window becomes front-most.
// This is useful for our platform z-order heuristic when io.MouseHoveredViewport is not available.
if (viewport->LastFrontMostStampCount != g.WindowsFrontMostStampCount)
viewport->LastFrontMostStampCount = ++g.WindowsFrontMostStampCount;
}
// Clear request flags
viewport->ClearRequestFlags();
}
// Update our implicit z-order knowledge of platform windows, which is used when the back-end cannot provide io.MouseHoveredViewport.
// When setting Platform_GetWindowFocus, it is expected that the platform back-end can handle calls without crashing if it doesn't have data stored.
if (g.PlatformIO.Platform_GetWindowFocus != NULL)
{
ImGuiViewportP* focused_viewport = NULL;
for (int n = 0; n < g.Viewports.Size && focused_viewport == NULL; n++)
{
ImGuiViewportP* viewport = g.Viewports[n];
if (n == 0 || viewport->PlatformWindowCreated)
if (g.PlatformIO.Platform_GetWindowFocus(viewport))
focused_viewport = viewport;
}
if (focused_viewport && g.PlatformLastFocusedViewport != focused_viewport->ID)
{
if (focused_viewport->LastFrontMostStampCount != g.WindowsFrontMostStampCount)
focused_viewport->LastFrontMostStampCount = ++g.WindowsFrontMostStampCount;
g.PlatformLastFocusedViewport = focused_viewport->ID;
}
}
}
// This is a default/basic function for performing the rendering/swap of multiple Platform Windows.
// Custom renderers may prefer to not call this function at all, and instead iterate the publicly exposed platform data and handle rendering/sync themselves.
// The Render/Swap functions stored in ImGuiPlatformIO are merely here to allow for this helper to exist, but you can do it yourself:
@ -10613,6 +10373,246 @@ ImGuiViewportP* ImGui::AddUpdateViewport(ImGuiWindow* window, ImGuiID id, const
return viewport;
}
// FIXME-VIEWPORT: This is all super messy and ought to be clarified or rewritten.
static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
{
ImGuiContext& g = *GImGui;
ImGuiWindowFlags flags = window->Flags;
window->ViewportAllowPlatformMonitorExtend = -1;
// Restore main viewport if multi-viewport is not supported by the back-end
ImGuiViewportP* main_viewport = g.Viewports[0];
if (!(g.ConfigFlagsForFrame & ImGuiConfigFlags_ViewportsEnable))
{
SetWindowViewport(window, main_viewport);
return;
}
window->ViewportOwned = false;
// Appearing popups reset their viewport so they can inherit again
if ((flags & (ImGuiWindowFlags_Popup | ImGuiWindowFlags_Tooltip)) && window->Appearing)
{
window->Viewport = NULL;
window->ViewportId = 0;
}
if (!g.NextWindowData.ViewportCond)
{
// By default inherit from parent window
if (window->Viewport == NULL && window->ParentWindow)
window->Viewport = window->ParentWindow->Viewport;
// Attempt to restore saved viewport id (= window that hasn't been activated yet), try to restore the viewport based on saved 'window->ViewportPos' restored from .ini file
if (window->Viewport == NULL && window->ViewportId != 0)
{
window->Viewport = (ImGuiViewportP*)FindViewportByID(window->ViewportId);
if (window->Viewport == NULL && window->ViewportPos.x != FLT_MAX && window->ViewportPos.y != FLT_MAX)
window->Viewport = AddUpdateViewport(window, window->ID, window->ViewportPos, window->Size, ImGuiViewportFlags_None);
}
}
if (g.NextWindowData.ViewportCond)
{
// Code explicitly request a viewport
window->Viewport = (ImGuiViewportP*)FindViewportByID(g.NextWindowData.ViewportId);
window->ViewportId = g.NextWindowData.ViewportId; // Store ID even if Viewport isn't resolved yet.
}
else if ((flags & ImGuiWindowFlags_ChildWindow) || (flags & ImGuiWindowFlags_ChildMenu))
{
// Always inherit viewport from parent window
window->Viewport = window->ParentWindow->Viewport;
}
else if (flags & ImGuiWindowFlags_Tooltip)
{
window->Viewport = g.MouseViewport;
}
else if (GetWindowAlwaysWantOwnViewport(window))
{
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_None);
}
else if (g.MovingWindow && g.MovingWindow->RootWindow == window && IsMousePosValid())
{
if (window->Viewport != NULL && window->Viewport->Window == window)
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_None);
}
else
{
// Merge into host viewport?
// We cannot test window->ViewportOwned as it set lower in the function.
bool try_to_merge_into_host_viewport = (window->Viewport && window == window->Viewport->Window && g.ActiveId == 0);
if (try_to_merge_into_host_viewport)
UpdateTryMergeWindowIntoHostViewport(window, g.Viewports[0]);
}
// Fallback to default viewport
if (window->Viewport == NULL)
window->Viewport = main_viewport;
// Mark window as allowed to protrude outside of its viewport and into the current monitor
if (flags & (ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup))
{
// We need to take account of the possibility that mouse may become invalid.
// Popups/Tooltip always set ViewportAllowPlatformMonitorExtend so GetWindowAllowedExtentRect() will return full monitor bounds.
ImVec2 mouse_ref = (flags & ImGuiWindowFlags_Tooltip) ? g.IO.MousePos : g.BeginPopupStack.back().OpenMousePos;
bool use_mouse_ref = (g.NavDisableHighlight || !g.NavDisableMouseHover || !g.NavWindow);
bool mouse_valid = IsMousePosValid(&mouse_ref);
if ((window->Appearing || (flags & ImGuiWindowFlags_Tooltip)) && (!use_mouse_ref || mouse_valid))
window->ViewportAllowPlatformMonitorExtend = FindPlatformMonitorForPos((use_mouse_ref && mouse_valid) ? mouse_ref : NavCalcPreferredRefPos());
else
window->ViewportAllowPlatformMonitorExtend = window->Viewport->PlatformMonitor;
}
else if (window->Viewport && window != window->Viewport->Window && window->Viewport->Window && !(flags & ImGuiWindowFlags_ChildWindow))
{
// When called from Begin() we don't have access to a proper version of the Hidden flag yet, so we replicate this code.
const bool will_be_visible = (window->DockIsActive && !window->DockTabIsVisible) ? false : true;
if ((window->Flags & ImGuiWindowFlags_DockNodeHost) && window->Viewport->LastFrameActive < g.FrameCount && will_be_visible)
{
// Steal/transfer ownership
//IMGUI_DEBUG_LOG("[%05d] Window '%s' steal Viewport %08X from Window '%s'\n", g.FrameCount, window->Name, window->Viewport->ID, window->Viewport->Window->Name);
window->Viewport->Window = window;
window->Viewport->ID = window->ID;
window->Viewport->LastNameHash = 0;
}
else if (!UpdateTryMergeWindowIntoHostViewport(window, g.Viewports[0])) // Merge?
{
// New viewport
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoFocusOnAppearing);
}
}
// Regular (non-child, non-popup) windows by default are also allowed to protrude
// Child windows are kept contained within their parent.
else if (window->ViewportAllowPlatformMonitorExtend < 0 && (flags & ImGuiWindowFlags_ChildWindow) == 0)
window->ViewportAllowPlatformMonitorExtend = window->Viewport->PlatformMonitor;
// Update flags
window->ViewportOwned = (window == window->Viewport->Window);
window->ViewportId = window->Viewport->ID;
// If the OS window has a title bar, hide our imgui title bar
//if (window->ViewportOwned && !(window->Viewport->Flags & ImGuiViewportFlags_NoDecoration))
// window->Flags |= ImGuiWindowFlags_NoTitleBar;
}
// Called by user at the end of the main loop, after EndFrame()
// This will handle the creation/update of all OS windows via function defined in the ImGuiPlatformIO api.
void ImGui::UpdatePlatformWindows()
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.FrameCountEnded == g.FrameCount && "Forgot to call Render() or EndFrame() before UpdatePlatformWindows()?");
IM_ASSERT(g.FrameCountPlatformEnded < g.FrameCount);
g.FrameCountPlatformEnded = g.FrameCount;
if (!(g.ConfigFlagsForFrame & ImGuiConfigFlags_ViewportsEnable))
return;
// Create/resize/destroy platform windows to match each active viewport.
// Skip the main viewport (index 0), which is always fully handled by the application!
for (int i = 1; i < g.Viewports.Size; i++)
{
ImGuiViewportP* viewport = g.Viewports[i];
// Destroy platform window if the viewport hasn't been submitted or if it is hosting a hidden window (the implicit/fallback Debug window will be registered its viewport then be disabled)
bool destroy_platform_window = false;
destroy_platform_window |= (viewport->LastFrameActive < g.FrameCount - 1);
destroy_platform_window |= (viewport->Window && !IsWindowActiveAndVisible(viewport->Window));
if (destroy_platform_window)
{
DestroyPlatformWindow(viewport);
continue;
}
// New windows that appears directly in a new viewport won't always have a size on their first frame
if (viewport->LastFrameActive < g.FrameCount || viewport->Size.x <= 0 || viewport->Size.y <= 0)
continue;
// Create window
bool is_new_platform_window = (viewport->PlatformWindowCreated == false);
if (is_new_platform_window)
{
//IMGUI_DEBUG_LOG("Create Platform Window %08X (%s)\n", viewport->ID, viewport->Window ? viewport->Window->Name : "n/a");
g.PlatformIO.Platform_CreateWindow(viewport);
if (g.PlatformIO.Renderer_CreateWindow != NULL)
g.PlatformIO.Renderer_CreateWindow(viewport);
viewport->LastNameHash = 0;
viewport->LastPlatformPos = viewport->LastPlatformSize = ImVec2(FLT_MAX, FLT_MAX); // By clearing those we'll enforce a call to Platform_SetWindowPos/Size below, before Platform_ShowWindow (FIXME: Is that necessary?)
viewport->LastRendererSize = viewport->Size; // We don't need to call Renderer_SetWindowSize() as it is expected Renderer_CreateWindow() already did it.
viewport->PlatformWindowCreated = true;
}
// Apply Position and Size (from ImGui to Platform/Renderer back-ends)
if ((viewport->LastPlatformPos.x != viewport->Pos.x || viewport->LastPlatformPos.y != viewport->Pos.y) && !viewport->PlatformRequestMove)
g.PlatformIO.Platform_SetWindowPos(viewport, viewport->Pos);
if ((viewport->LastPlatformSize.x != viewport->Size.x || viewport->LastPlatformSize.y != viewport->Size.y) && !viewport->PlatformRequestResize)
g.PlatformIO.Platform_SetWindowSize(viewport, viewport->Size);
if ((viewport->LastRendererSize.x != viewport->Size.x || viewport->LastRendererSize.y != viewport->Size.y) && g.PlatformIO.Renderer_SetWindowSize)
g.PlatformIO.Renderer_SetWindowSize(viewport, viewport->Size);
viewport->LastPlatformPos = viewport->Pos;
viewport->LastPlatformSize = viewport->LastRendererSize = viewport->Size;
// Update title bar (if it changed)
if (ImGuiWindow* window_for_title = GetWindowForTitleDisplay(viewport->Window))
{
const char* title_begin = window_for_title->Name;
char* title_end = (char*)(intptr_t)FindRenderedTextEnd(title_begin);
const ImGuiID title_hash = ImHashStr(title_begin, title_end - title_begin);
if (viewport->LastNameHash != title_hash)
{
char title_end_backup_c = *title_end;
*title_end = 0; // Cut existing buffer short instead of doing an alloc/free, no small gain.
g.PlatformIO.Platform_SetWindowTitle(viewport, title_begin);
*title_end = title_end_backup_c;
viewport->LastNameHash = title_hash;
}
}
// Update alpha (if it changed)
if (viewport->LastAlpha != viewport->Alpha && g.PlatformIO.Platform_SetWindowAlpha)
g.PlatformIO.Platform_SetWindowAlpha(viewport, viewport->Alpha);
viewport->LastAlpha = viewport->Alpha;
// Optional, general purpose call to allow the back-end to perform general book-keeping even if things haven't changed.
if (g.PlatformIO.Platform_UpdateWindow)
g.PlatformIO.Platform_UpdateWindow(viewport);
if (is_new_platform_window)
{
// On startup ensure new platform window don't steal focus (give it a few frames, as nested contents may lead to viewport being created a few frames late)
if (g.FrameCount < 3)
viewport->Flags |= ImGuiViewportFlags_NoFocusOnAppearing;
// Show window
g.PlatformIO.Platform_ShowWindow(viewport);
// Even without focus, we assume the window becomes front-most.
// This is useful for our platform z-order heuristic when io.MouseHoveredViewport is not available.
if (viewport->LastFrontMostStampCount != g.WindowsFrontMostStampCount)
viewport->LastFrontMostStampCount = ++g.WindowsFrontMostStampCount;
}
// Clear request flags
viewport->ClearRequestFlags();
}
// Update our implicit z-order knowledge of platform windows, which is used when the back-end cannot provide io.MouseHoveredViewport.
// When setting Platform_GetWindowFocus, it is expected that the platform back-end can handle calls without crashing if it doesn't have data stored.
if (g.PlatformIO.Platform_GetWindowFocus != NULL)
{
ImGuiViewportP* focused_viewport = NULL;
for (int n = 0; n < g.Viewports.Size && focused_viewport == NULL; n++)
{
ImGuiViewportP* viewport = g.Viewports[n];
if (n == 0 || viewport->PlatformWindowCreated)
if (g.PlatformIO.Platform_GetWindowFocus(viewport))
focused_viewport = viewport;
}
if (focused_viewport && g.PlatformLastFocusedViewport != focused_viewport->ID)
{
if (focused_viewport->LastFrontMostStampCount != g.WindowsFrontMostStampCount)
focused_viewport->LastFrontMostStampCount = ++g.WindowsFrontMostStampCount;
g.PlatformLastFocusedViewport = focused_viewport->ID;
}
}
}
//-----------------------------------------------------------------------------
// [SECTION] DOCKING

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