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Overlap: IsItemHovered: Changed behavior to return false when querying an item using AllowOverlap mode. Added ImGuiHoveredFlags_AllowWhenOverlappedByItem, ImGuiHoveredFlags_AllowWhenOverlappedByWindow., (#6512, #3909, #517)

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This commit is contained in:
ocornut 2023-06-27 14:58:40 +02:00
parent 8439a73645
commit 10c7709f30
4 changed files with 25 additions and 8 deletions
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5
docs/CHANGELOG.txt
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@ -48,6 +48,8 @@ Breaking changes:
and relied on ambiguously defined design. Use 'SetNextItemAllowOverlap()' before item instead.
- Renamed 'ImGuiTreeNodeFlags_AllowItemOverlap' to 'ImGuiTreeNodeFlags_AllowOverlap'.
- Renamed 'ImGuiSelectableFlags_AllowItemOverlap' to 'ImGuiSelectableFlags_AllowOverlap'
- IsItemHovered: Changed behavior to return false when querying an item using AllowOverlap mode
which is being overlapped. Added ImGuiHoveredFlags_AllowWhenOverlappedByItem. (#6512, #3909, #517)
- Kept redirecting enums (will obsolete).
Other changes:
@ -72,6 +74,9 @@ Other changes:
isn't covered as much. (Match offset for drag and drop tooltips)
- IsItemHovered: Tweaked default value of style.HoverDelayNormal from 0.30 to 0.40,
Tweaked default value of style.HoverDelayShort from 0.10 to 0.15. (#1485)
- IsItemHovered: Added _AllowWhenOverlappedByWindow to ignore window-overlap only.
Option ImGuiHoveredFlags_AllowWhenOverlapped now expand into a combination of both
_AllowWhenOverlappedByWindow + _AllowWhenOverlappedByItem, matching old behavior.
- Overlapping items: (#6512, #3909, #517)
- Selectable, TreeNode: When using ImGuiSelectableFlags_AllowOverlap/ImGuiTreeNodeFlags_AllowOverlap
and holding item held, overlapping widgets won't appear as hovered. (#6512, #3909)

14
imgui.cpp
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@ -399,6 +399,7 @@ CODE
- 2023/06/28 (1.89.7) - overlapping items: obsoleted 'SetItemAllowOverlap()' (called after item) in favor of calling 'SetNextItemAllowOverlap()' (called before item). 'SetItemAllowOverlap()' didn't and couldn't work reliably since 1.89 (2022-11-15).
- 2023/06/28 (1.89.7) - overlapping items: renamed 'ImGuiTreeNodeFlags_AllowItemOverlap' to 'ImGuiTreeNodeFlags_AllowOverlap', 'ImGuiSelectableFlags_AllowItemOverlap' to 'ImGuiSelectableFlags_AllowOverlap'. Kept redirecting enums (will obsolete).
- 2023/06/28 (1.89.7) - overlapping items: IsItemHovered() now by default return false when querying an item using AllowOverlap mode which is being overlapped. Use ImGuiHoveredFlags_AllowWhenOverlappedByItem to revert to old behavior.
- 2023/06/20 (1.89.7) - moved io.HoverDelayShort/io.HoverDelayNormal to style.HoverDelayShort/style.HoverDelayNormal. As the fields were added in 1.89 and expected to be left unchanged by most users, or only tweaked once during app initialization, we are exceptionally accepting the breakage.
- 2023/05/30 (1.89.6) - backends: renamed "imgui_impl_sdlrenderer.cpp" to "imgui_impl_sdlrenderer2.cpp" and "imgui_impl_sdlrenderer.h" to "imgui_impl_sdlrenderer2.h". This is in prevision for the future release of SDL3.
- 2023/05/22 (1.89.6) - listbox: commented out obsolete/redirecting functions that were marked obsolete more than two years ago:
@ -3983,12 +3984,13 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
// to use IsItemHovered() after EndChild() itself. Until a solution is found I believe reverting to the test from 2017/09/27 is safe since this was
// the test that has been running for a long while.
if (g.HoveredWindow != window && (status_flags & ImGuiItemStatusFlags_HoveredWindow) == 0)
if ((flags & ImGuiHoveredFlags_AllowWhenOverlapped) == 0)
if ((flags & ImGuiHoveredFlags_AllowWhenOverlappedByWindow) == 0)
return false;
// Test if another item is active (e.g. being dragged)
const ImGuiID id = g.LastItemData.ID;
if ((flags & ImGuiHoveredFlags_AllowWhenBlockedByActiveItem) == 0)
if (g.ActiveId != 0 && g.ActiveId != g.LastItemData.ID && !g.ActiveIdAllowOverlap && g.ActiveId != window->MoveId)
if (g.ActiveId != 0 && g.ActiveId != id && !g.ActiveIdAllowOverlap && g.ActiveId != window->MoveId)
return false;
// Test if interactions on this window are blocked by an active popup or modal.
@ -4002,8 +4004,14 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
// Special handling for calling after Begin() which represent the title bar or tab.
// When the window is skipped/collapsed (SkipItems==true) that last item will never be overwritten so we need to detect the case.
if (g.LastItemData.ID == window->MoveId && window->WriteAccessed)
if (id == window->MoveId && window->WriteAccessed)
return false;
// Test if using AllowOverlap and overlapped
if ((g.LastItemData.InFlags & ImGuiItemflags_AllowOverlap) && id != 0)
if ((flags & ImGuiHoveredFlags_AllowWhenOverlappedByItem) == 0)
if (g.HoveredIdPreviousFrame != g.LastItemData.ID)
return false;
}
// Handle hover delay

8
imgui.h
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@ -1296,9 +1296,11 @@ enum ImGuiHoveredFlags_
ImGuiHoveredFlags_AllowWhenBlockedByPopup = 1 << 5, // Return true even if a popup window is normally blocking access to this item/window
//ImGuiHoveredFlags_AllowWhenBlockedByModal = 1 << 6, // Return true even if a modal popup window is normally blocking access to this item/window. FIXME-TODO: Unavailable yet.
ImGuiHoveredFlags_AllowWhenBlockedByActiveItem = 1 << 7, // Return true even if an active item is blocking access to this item/window. Useful for Drag and Drop patterns.
ImGuiHoveredFlags_AllowWhenOverlapped = 1 << 8, // IsItemHovered() only: Return true even if the position is obstructed or overlapped by another WINDOW.
ImGuiHoveredFlags_AllowWhenDisabled = 1 << 9, // IsItemHovered() only: Return true even if the item is disabled
ImGuiHoveredFlags_NoNavOverride = 1 << 10, // IsItemHovered() only: Disable using gamepad/keyboard navigation state when active, always query mouse
ImGuiHoveredFlags_AllowWhenOverlappedByItem = 1 << 8, // IsItemHovered() only: Return true even if the item uses AllowOverlap mode and is overlapped by another hoverable item.
ImGuiHoveredFlags_AllowWhenOverlappedByWindow = 1 << 9, // IsItemHovered() only: Return true even if the position is obstructed or overlapped by another window.
ImGuiHoveredFlags_AllowWhenDisabled = 1 << 10, // IsItemHovered() only: Return true even if the item is disabled
ImGuiHoveredFlags_NoNavOverride = 1 << 11, // IsItemHovered() only: Disable using gamepad/keyboard navigation state when active, always query mouse
ImGuiHoveredFlags_AllowWhenOverlapped = ImGuiHoveredFlags_AllowWhenOverlappedByItem | ImGuiHoveredFlags_AllowWhenOverlappedByWindow,
ImGuiHoveredFlags_RectOnly = ImGuiHoveredFlags_AllowWhenBlockedByPopup | ImGuiHoveredFlags_AllowWhenBlockedByActiveItem | ImGuiHoveredFlags_AllowWhenOverlapped,
ImGuiHoveredFlags_RootAndChildWindows = ImGuiHoveredFlags_RootWindow | ImGuiHoveredFlags_ChildWindows,

6
imgui_demo.cpp
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@ -2430,7 +2430,8 @@ static void ShowDemoWindowWidgets()
"IsItemHovered() = %d\n"
"IsItemHovered(_AllowWhenBlockedByPopup) = %d\n"
"IsItemHovered(_AllowWhenBlockedByActiveItem) = %d\n"
"IsItemHovered(_AllowWhenOverlapped) = %d\n"
"IsItemHovered(_AllowWhenOverlappedByItem) = %d\n"
"IsItemHovered(_AllowWhenOverlappedByWindow) = %d\n"
"IsItemHovered(_AllowWhenDisabled) = %d\n"
"IsItemHovered(_RectOnly) = %d\n"
"IsItemActive() = %d\n"
@ -2449,7 +2450,8 @@ static void ShowDemoWindowWidgets()
ImGui::IsItemHovered(),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenOverlapped),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenOverlappedByItem),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenOverlappedByWindow),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled),
ImGui::IsItemHovered(ImGuiHoveredFlags_RectOnly),
ImGui::IsItemActive(),