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Overlap, IsItemHovered: clarification on using IsItemHovered() on a non-reactive item after a reactive overlappable one. (#6610)

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ocornut
2023-07-18 11:18:43 +02:00
parent 52125a54a5
commit d342ec10cc
2 changed files with 8 additions and 4 deletions
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9
docs/CHANGELOG.txt
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@@ -45,7 +45,7 @@ Breaking changes:
- IO: Obsoleted io.ClearInputCharacters() (added in 1.47) as it now ambiguous
and often incorrect/misleading considering the existence of a higher-level
input queue. (#4921)
- ImDrawData: CmdLists[] arra is now owned, changed from 'ImDrawList**' to
- ImDrawData: CmdLists[] array is now owned, changed from 'ImDrawList**' to
'ImVector<ImDrawList*>'. Majority of users shouldn't be affected, but you
cannot compare to NULL nor reassign manually anymore.
Instead use AddDrawList(). (#6406, #4879, #1878)
@@ -98,6 +98,11 @@ Breaking changes:
legacy 'SetItemAllowOverlap()' call (public API) + ImGuiButtonFlags_AllowOverlap (internal).
- Obsoleted 'SetItemAllowOverlap()': it didn't and couldn't work reliably since 1.89 (2022-11-15),
and relied on ambiguously defined design. Use 'SetNextItemAllowOverlap()' before item instead.
- Selectable, TreeNode: When using ImGuiSelectableFlags_AllowOverlap/ImGuiTreeNodeFlags_AllowOverlap
and holding item held, overlapping widgets won't appear as hovered. (#6512, #3909)
While this fixes a common small visual issue, it also means that calling IsItemHovered()
after a non-reactive elements - e.g. Text() - overlapping an active one may fail if you don't
use IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem). (#6610)
- Renamed 'ImGuiTreeNodeFlags_AllowItemOverlap' to 'ImGuiTreeNodeFlags_AllowOverlap'.
- Renamed 'ImGuiSelectableFlags_AllowItemOverlap' to 'ImGuiSelectableFlags_AllowOverlap'
- Kept redirecting enums (will obsolete).
@@ -133,8 +138,6 @@ Other changes:
- Fixed first frame of an overlap highlighting underlying item if previous frame didn't hover anything.
- IsItemHovered: Changed to return false when querying an item using AllowOverlap mode which
is being overlapped. Added ImGuiHoveredFlags_AllowWhenOverlappedByItem to opt-out. (#6512, #3909, #517)
- Selectable, TreeNode: When using ImGuiSelectableFlags_AllowOverlap/ImGuiTreeNodeFlags_AllowOverlap
and holding item held, overlapping widgets won't appear as hovered. (#6512, #3909)
- IsWindowHovered: Added support for ImGuiHoveredFlags_Stationary.
- IsWindowHovered, IsItemHovered: Assert when passed any unsupported flags.
- Tables: Fixed a regression in 1.89.6 leading to the first column of tables with either

3
imgui.cpp
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@@ -429,6 +429,7 @@ 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.
- 2023/06/28 (1.89.7) - overlapping items: Selectable and TreeNode don't allow overlap when active so overlapping widgets won't appear as hovered. While this fixes a common small visual issue, it also means that calling IsItemHovered() after a non-reactive elements - e.g. Text() - overlapping an active one may fail if you don't use IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem). (#6610)
- 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:
@@ -4077,7 +4078,7 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
// Internal facing ItemHoverable() used when submitting widgets. Differs slightly from IsItemHovered().
// (this does not rely on LastItemData it can be called from a ButtonBehavior() call not following an ItemAdd() call)
// FIXME-LEGACY: the 'ImGuiItemFlags item_flags' parameter was added on 2023-06-28.
// If you used this ii your legacy/custom widgets code:
// If you used this in your legacy/custom widgets code:
// - Commonly: if your ItemHoverable() call comes after an ItemAdd() call: pass 'item_flags = g.LastItemData.InFlags'.
// - Rare: otherwise you may pass 'item_flags = 0' (ImGuiItemFlags_None) unless you want to benefit from special behavior handled by ItemHoverable.
bool ImGui::ItemHoverable(const ImRect& bb, ImGuiID id, ImGuiItemFlags item_flags)