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This commit is contained in:
omar 2017-10-29 23:14:17 +01:00
parent 0e775807b4
commit d46772b429
1 changed files with 2 additions and 3 deletions
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5
imgui.cpp
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@ -1860,7 +1860,7 @@ ImGuiID ImGuiWindow::GetIDNoKeepAlive(const char* str, const char* str_end)
return ImHash(str, str_end ? (int)(str_end - str) : 0, seed); return ImHash(str, str_end ? (int)(str_end - str) : 0, seed);
} }
// This is particularly dodgy and used in extremely rare situation. // This is only used in rare/specific situations to manufacture an ID out of nowhere.
ImGuiID ImGuiWindow::GetIDFromRectangle(const ImRect& r_abs) ImGuiID ImGuiWindow::GetIDFromRectangle(const ImRect& r_abs)
{ {
ImGuiID seed = IDStack.back(); ImGuiID seed = IDStack.back();
@ -10628,10 +10628,9 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags, int mouse_button)
return false; return false;
} }
// Magic fallback (=somehow reprehensible) to handle items with no assigned ID, e.g. Text(), Image(). // Magic fallback (=somehow reprehensible) to handle items with no assigned ID, e.g. Text(), Image()
// We build a throwaway ID based on current ID stack + relative AABB of items in window. // We build a throwaway ID based on current ID stack + relative AABB of items in window.
// THE IDENTIFIER WON'T SURVIVE ANY REPOSITIONING OF THE WIDGET, so if your widget moves your dragging operation will be canceled. // THE IDENTIFIER WON'T SURVIVE ANY REPOSITIONING OF THE WIDGET, so if your widget moves your dragging operation will be canceled.
// If you want fail-proof dragging,
// We don't need to maintain/call ClearActiveID() as releasing the button will early out this function and trigger !ActiveIdIsAlive. // We don't need to maintain/call ClearActiveID() as releasing the button will early out this function and trigger !ActiveIdIsAlive.
bool is_hovered = window->DC.LastItemRectHoveredRect; bool is_hovered = window->DC.LastItemRectHoveredRect;
if (!is_hovered && (g.ActiveId == 0 || g.ActiveIdWindow != window)) if (!is_hovered && (g.ActiveId == 0 || g.ActiveIdWindow != window))