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Comments around ImGuiInputFlags.

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ocornut 2024-01-16 16:25:02 +01:00
parent 1cc0eb4d32
commit 80d5cb1ab1
2 changed files with 29 additions and 18 deletions
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1
imgui.cpp
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@ -8400,6 +8400,7 @@ bool ImGui::SetShortcutRouting(ImGuiKeyChord key_chord, ImGuiID owner_id, ImGuiI
if (flags & ImGuiInputFlags_RouteUnlessBgFocused)
if (g.NavWindow == NULL)
return false;
// Note how ImGuiInputFlags_RouteAlways won't set routing and thus won't set owner. May want to rework this?
if (flags & ImGuiInputFlags_RouteAlways)
{

46
imgui_internal.h
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@ -1403,17 +1403,19 @@ struct ImGuiKeyOwnerData
};
// Flags for extended versions of IsKeyPressed(), IsMouseClicked(), Shortcut(), SetKeyOwner(), SetItemKeyOwner()
// Don't mistake with ImGuiInputTextFlags! (for ImGui::InputText() function)
// Don't mistake with ImGuiInputTextFlags! (which is for ImGui::InputText() function)
enum ImGuiInputFlags_
{
// Flags for IsKeyPressed(), IsKeyChordPressed(), IsMouseClicked(), Shortcut()
ImGuiInputFlags_None = 0,
ImGuiInputFlags_Repeat = 1 << 0, // Return true on successive repeats. Default for legacy IsKeyPressed(). NOT Default for legacy IsMouseClicked(). MUST BE == 1.
// Repeat mode
ImGuiInputFlags_Repeat = 1 << 0, // Enable repeat. Return true on successive repeats. Default for legacy IsKeyPressed(). NOT Default for legacy IsMouseClicked(). MUST BE == 1.
ImGuiInputFlags_RepeatRateDefault = 1 << 1, // Repeat rate: Regular (default)
ImGuiInputFlags_RepeatRateNavMove = 1 << 2, // Repeat rate: Fast
ImGuiInputFlags_RepeatRateNavTweak = 1 << 3, // Repeat rate: Faster
// Specify when repeating key pressed can be interrupted.
// Repeat mode: Specify when repeating key pressed can be interrupted.
// In theory ImGuiInputFlags_RepeatUntilOtherKeyPress may be a desirable default, but it would break too many behavior so everything is opt-in.
ImGuiInputFlags_RepeatUntilRelease = 1 << 4, // Stop repeating when released (default for all functions except Shortcut). This only exists to allow overriding Shortcut() default behavior.
ImGuiInputFlags_RepeatUntilKeyModsChange = 1 << 5, // Stop repeating when released OR if keyboard mods are changed (default for Shortcut)
@ -1424,38 +1426,46 @@ enum ImGuiInputFlags_
ImGuiInputFlags_CondHovered = 1 << 8, // Only set if item is hovered (default to both)
ImGuiInputFlags_CondActive = 1 << 9, // Only set if item is active (default to both)
ImGuiInputFlags_CondDefault_ = ImGuiInputFlags_CondHovered | ImGuiInputFlags_CondActive,
ImGuiInputFlags_CondMask_ = ImGuiInputFlags_CondHovered | ImGuiInputFlags_CondActive,
// Flags for SetKeyOwner(), SetItemKeyOwner()
ImGuiInputFlags_LockThisFrame = 1 << 10, // Access to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared at end of frame. This is useful to make input-owner-aware code steal keys from non-input-owner-aware code.
ImGuiInputFlags_LockUntilRelease = 1 << 11, // Access to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared when the key is released or at end of each frame if key is released. This is useful to make input-owner-aware code steal keys from non-input-owner-aware code.
// Locking is useful to make input-owner-aware code steal keys from non-input-owner-aware code. If all code is input-owner-aware locking would never be necessary.
ImGuiInputFlags_LockThisFrame = 1 << 10, // Further accesses to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared at end of frame.
ImGuiInputFlags_LockUntilRelease = 1 << 11, // Further accesses to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared when the key is released or at end of each frame if key is released.
// Routing policies for Shortcut() + low-level SetShortcutRouting()
// - The general idea is that several callers register interest in a shortcut, and only one owner gets it.
// - When a policy (other than _RouteAlways) is set, Shortcut() will register itself with SetShortcutRouting(),
// Parent -> call Shortcut(Ctrl+S) // When Parent is focused, Parent gets the shortcut.
// Child1 -> call Shortcut(Ctrl+S) // When Child1 is focused, Child1 gets the shortcut (Child1 overrides Parent shortcuts)
// Child2 -> no call // When Child2 is focused, Parent gets the shortcut.
// The whole system is order independent, so if Child1 does it calls before Parent results will be identical.
// This is an important property as it facilitate working with foreign code or larger codebase.
// - Visualize registered routes in 'Metrics->Inputs' and submitted routes in 'Debug Log->InputRouting'.
// - When a policy (except for _RouteAlways *) is set, Shortcut() will register itself with SetShortcutRouting(),
// allowing the system to decide where to route the input among other route-aware calls.
// - Shortcut() uses ImGuiInputFlags_RouteFocused by default: meaning that a simple Shortcut() poll
// will register a route and only succeed when parent window is in the focus stack and if no-one
// with a higher priority is claiming the shortcut.
// - Using ImGuiInputFlags_RouteAlways is roughly equivalent to doing e.g. IsKeyPressed(key) + testing mods.
// (* Using ImGuiInputFlags_RouteAlways is roughly equivalent to calling IsKeyChordPressed(key)).
// - Shortcut() uses ImGuiInputFlags_RouteFocused by default. Meaning that a Shortcut() call will register
// a route and only succeed when parent window is in the focus-stack and if no-one with a higher priority
// is claiming the same shortcut.
// - You can chain two unrelated windows in the focus stack using SetWindowParentWindowForFocusRoute().
// - Priorities: GlobalHigh > Focused (when owner is active item) > Global > Focused (when focused window) > GlobalLow.
// - Can select only 1 policy among all available.
ImGuiInputFlags_RouteFocused = 1 << 12, // (Default) Register focused route: Accept inputs if window is in focus stack. Deep-most focused window takes inputs. ActiveId takes inputs over deep-most focused window.
ImGuiInputFlags_RouteGlobalLow = 1 << 13, // Register route globally (lowest priority: unless a focused window or active item registered the route) -> recommended Global priority.
ImGuiInputFlags_RouteGlobal = 1 << 14, // Register route globally (medium priority: unless an active item registered the route, e.g. CTRL+A registered by InputText).
ImGuiInputFlags_RouteGlobalHigh = 1 << 15, // Register route globally (highest priority: unlikely you need to use that: will interfere with every active items)
ImGuiInputFlags_RouteMask_ = ImGuiInputFlags_RouteFocused | ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_RouteGlobalLow | ImGuiInputFlags_RouteGlobalHigh, // _Always not part of this!
ImGuiInputFlags_RouteFocused = 1 << 12, // (Default) Honor focus route: Accept inputs if window is in focus stack. Deep-most focused window takes inputs. ActiveId takes inputs over deep-most focused window.
ImGuiInputFlags_RouteGlobalLow = 1 << 13, // Register route globally (lowest priority: unless a focused window or active item registered the route) -> recommended Global priority IF you need a Global priority.
ImGuiInputFlags_RouteGlobal = 1 << 14, // Register route globally (medium priority: unless an active item registered the route, e.g. CTRL+A registered by InputText will take priority over this).
ImGuiInputFlags_RouteGlobalHigh = 1 << 15, // Register route globally (higher priority: unlikely you need to use that: will interfere with every active items, e.g. CTRL+A registered by InputText will be overiden by this)
ImGuiInputFlags_RouteAlways = 1 << 16, // Do not register route, poll keys directly.
// Routing polices: extra options
ImGuiInputFlags_RouteUnlessBgFocused= 1 << 17, // Global routes will not be applied if underlying background/void is focused (== no Dear ImGui windows are focused). Useful for overlay applications.
ImGuiInputFlags_RouteExtraMask_ = ImGuiInputFlags_RouteAlways | ImGuiInputFlags_RouteUnlessBgFocused,
// [Internal] Mask of which function support which flags
ImGuiInputFlags_RepeatRateMask_ = ImGuiInputFlags_RepeatRateDefault | ImGuiInputFlags_RepeatRateNavMove | ImGuiInputFlags_RepeatRateNavTweak,
ImGuiInputFlags_RepeatUntilMask_ = ImGuiInputFlags_RepeatUntilRelease | ImGuiInputFlags_RepeatUntilKeyModsChange | ImGuiInputFlags_RepeatUntilKeyModsChangeFromNone | ImGuiInputFlags_RepeatUntilOtherKeyPress,
ImGuiInputFlags_RepeatMask_ = ImGuiInputFlags_Repeat | ImGuiInputFlags_RepeatRateMask_ | ImGuiInputFlags_RepeatUntilMask_,
ImGuiInputFlags_CondMask_ = ImGuiInputFlags_CondHovered | ImGuiInputFlags_CondActive,
ImGuiInputFlags_RouteMask_ = ImGuiInputFlags_RouteFocused | ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_RouteGlobalLow | ImGuiInputFlags_RouteGlobalHigh, // _Always not part of this!
ImGuiInputFlags_SupportedByIsKeyPressed = ImGuiInputFlags_RepeatMask_,
ImGuiInputFlags_SupportedByIsMouseClicked = ImGuiInputFlags_Repeat,
ImGuiInputFlags_SupportedByShortcut = ImGuiInputFlags_RepeatMask_ | ImGuiInputFlags_RouteMask_ | ImGuiInputFlags_RouteExtraMask_,
ImGuiInputFlags_SupportedByShortcut = ImGuiInputFlags_RepeatMask_ | ImGuiInputFlags_RouteMask_ | ImGuiInputFlags_RouteAlways | ImGuiInputFlags_RouteUnlessBgFocused,
ImGuiInputFlags_SupportedBySetKeyOwner = ImGuiInputFlags_LockThisFrame | ImGuiInputFlags_LockUntilRelease,
ImGuiInputFlags_SupportedBySetItemKeyOwner = ImGuiInputFlags_SupportedBySetKeyOwner | ImGuiInputFlags_CondMask_,
};