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Made BeginItemTooltip() and IsItemHovered() with delay flag infer an implicit ID using Pos only. (#7945, #1485, #143)

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Perhaps a better approach would be to: store last non-zero ID + count successive zero ID and combine then.
This commit is contained in:
ocornut 2024-09-03 21:19:25 +02:00
parent a93f7db875
commit f99febfd6f
4 changed files with 16 additions and 3 deletions
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2
docs/CHANGELOG.txt
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@ -76,6 +76,8 @@ Other changes:
- Windows: adjust default ClipRect to better match rendering of thick borders (which are in
theory not supported). Compensate for the fact that borders are centered around the windows
edge rather than inner. (#7887, #7888 + #3312, #7540, #3756, #6170, #6365)
- Made BeginItemTooltip() and IsItemHovered() with delay flag infer an implicit ID (for
ID-less items such as Text element) in a way that works when item resizes. (#7945, #1485)
- MultiSelect+TreeNode+Drag and Drop: fixed an issue where carrying a drag and drop
payload over an already open tree node would incorrectly select it. (#7850)
- MultiSelect+TreeNode: default open behavior is OpenOnDoubleClick + OpenOnArrow

12
imgui.cpp
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@ -4261,7 +4261,7 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
const float delay = CalcDelayFromHoveredFlags(flags);
if (delay > 0.0f || (flags & ImGuiHoveredFlags_Stationary))
{
ImGuiID hover_delay_id = (g.LastItemData.ID != 0) ? g.LastItemData.ID : window->GetIDFromRectangle(g.LastItemData.Rect);
ImGuiID hover_delay_id = (g.LastItemData.ID != 0) ? g.LastItemData.ID : window->GetIDFromPos(g.LastItemData.Rect.Min);
if ((flags & ImGuiHoveredFlags_NoSharedDelay) && (g.HoverItemDelayIdPreviousFrame != hover_delay_id))
g.HoverItemDelayTimer = 0.0f;
g.HoverItemDelayId = hover_delay_id;
@ -8367,6 +8367,16 @@ ImGuiID ImGuiWindow::GetID(int n)
}
// This is only used in rare/specific situations to manufacture an ID out of nowhere.
// FIXME: Consider instead storing last non-zero ID + count of successive zero-ID, and combine those?
ImGuiID ImGuiWindow::GetIDFromPos(const ImVec2& p_abs)
{
ImGuiID seed = IDStack.back();
ImVec2 p_rel = ImGui::WindowPosAbsToRel(this, p_abs);
ImGuiID id = ImHashData(&p_rel, sizeof(p_rel), seed);
return id;
}
// "
ImGuiID ImGuiWindow::GetIDFromRectangle(const ImRect& r_abs)
{
ImGuiID seed = IDStack.back();

2
imgui.h
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@ -29,7 +29,7 @@
// Library Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
#define IMGUI_VERSION "1.91.1 WIP"
#define IMGUI_VERSION_NUM 19104
#define IMGUI_VERSION_NUM 19105
#define IMGUI_HAS_TABLE
/*

3
imgui_internal.h
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@ -2715,6 +2715,7 @@ public:
ImGuiID GetID(const char* str, const char* str_end = NULL);
ImGuiID GetID(const void* ptr);
ImGuiID GetID(int n);
ImGuiID GetIDFromPos(const ImVec2& p_abs);
ImGuiID GetIDFromRectangle(const ImRect& r_abs);
// We don't use g.FontSize because the window may be != g.CurrentWindow.
@ -3124,8 +3125,8 @@ namespace ImGui
inline void SetWindowParentWindowForFocusRoute(ImGuiWindow* window, ImGuiWindow* parent_window) { window->ParentWindowForFocusRoute = parent_window; }
inline ImRect WindowRectAbsToRel(ImGuiWindow* window, const ImRect& r) { ImVec2 off = window->DC.CursorStartPos; return ImRect(r.Min.x - off.x, r.Min.y - off.y, r.Max.x - off.x, r.Max.y - off.y); }
inline ImRect WindowRectRelToAbs(ImGuiWindow* window, const ImRect& r) { ImVec2 off = window->DC.CursorStartPos; return ImRect(r.Min.x + off.x, r.Min.y + off.y, r.Max.x + off.x, r.Max.y + off.y); }
inline ImVec2 WindowPosRelToAbs(ImGuiWindow* window, const ImVec2& p) { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x + off.x, p.y + off.y); }
inline ImVec2 WindowPosAbsToRel(ImGuiWindow* window, const ImVec2& p) { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x - off.x, p.y - off.y); }
inline ImVec2 WindowPosRelToAbs(ImGuiWindow* window, const ImVec2& p) { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x + off.x, p.y + off.y); }
// Windows: Display Order and Focus Order
IMGUI_API void FocusWindow(ImGuiWindow* window, ImGuiFocusRequestFlags flags = 0);