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MultiSelect: Box-Select: when dragging from void, first hit item sets NavId by simulating a press, so navigation can resume from that spot.

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ocornut 2024-05-29 15:01:52 +02:00
parent 65ebc0513b
commit dc0a1682e3
2 changed files with 8 additions and 1 deletions
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1
imgui_internal.h
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@ -1758,6 +1758,7 @@ struct IMGUI_API ImGuiMultiSelectTempData
bool IsEndIO; // Set when switching IO from BeginMultiSelect() to EndMultiSelect() state.
bool IsFocused; // Set if currently focusing the selection scope (any item of the selection). May be used if you have custom shortcut associated to selection.
bool IsKeyboardSetRange; // Set by BeginMultiSelect() when using Shift+Navigation. Because scrolling may be affected we can't afford a frame of lag with Shift+Navigation.
bool IsSelectionEmpty; // Set by BeginMultiSelect() based on optional info provided by user. May be false positive, never false negative.
bool NavIdPassedBy;
bool RangeSrcPassedBy; // Set by the item that matches RangeSrcItem.
bool RangeDstPassedBy; // Set by the item that matches NavJustMovedToId when IsSetRange is set.

8
imgui_widgets.cpp
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@ -7330,6 +7330,7 @@ ImGuiMultiSelectIO* ImGui::BeginMultiSelect(ImGuiMultiSelectFlags flags, int cur
ms->FocusScopeId = id;
ms->Flags = flags;
ms->IsFocused = (ms->FocusScopeId == g.NavFocusScopeId);
ms->IsSelectionEmpty = (current_selection_size == 0);
ms->BackupCursorMaxPos = window->DC.CursorMaxPos;
ms->ScopeRectMin = window->DC.CursorMaxPos = window->DC.CursorPos;
PushFocusScope(ms->FocusScopeId);
@ -7398,6 +7399,8 @@ ImGuiMultiSelectIO* ImGui::BeginMultiSelect(ImGuiMultiSelectFlags flags, int cur
if (request_clear || request_select_all)
{
ImGuiSelectionRequest req = { ImGuiSelectionRequestType_SetAll, request_select_all, ImGuiSelectionUserData_Invalid, ImGuiSelectionUserData_Invalid };
if (!request_select_all)
ms->IsSelectionEmpty = true;
ms->IO.Requests.push_back(req);
}
ms->LoopRequestSetAll = request_select_all ? 1 : request_clear ? 0 : -1;
@ -7655,10 +7658,13 @@ void ImGui::MultiSelectItemFooter(ImGuiID id, bool* p_selected, bool* p_pressed)
selected = !selected;
ImGuiSelectionRequest req = { ImGuiSelectionRequestType_SetRange, selected, item_data, item_data };
ImGuiSelectionRequest* prev_req = (ms->IO.Requests.Size > 0) ? &ms->IO.Requests.Data[ms->IO.Requests.Size - 1] : NULL;
if (prev_req && prev_req->Type == ImGuiSelectionRequestType_SetRange && prev_req->RangeLastItem == ms->BoxSelectLastitem && prev_req->Selected == selected)
if (ms->IsSelectionEmpty && bs->IsStartedFromVoid)
pressed = true; // First item act as a pressed: code below will emit selection request and set NavId (whatever we emit here will be overriden anyway)
else if (prev_req && prev_req->Type == ImGuiSelectionRequestType_SetRange && prev_req->RangeLastItem == ms->BoxSelectLastitem && prev_req->Selected == selected)
prev_req->RangeLastItem = item_data; // Merge span into same request
else
ms->IO.Requests.push_back(req);
ms->IsSelectionEmpty = false;
}
ms->BoxSelectLastitem = item_data;
}