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Nav: split NavMoveRequest into NavMoveSubmitted + NavMoveScoringItems to allow operation to defer a move request and provide result immediately + fix regular scoring needlesly running during init + some renaming.

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ocornut
2021-08-31 17:44:58 +02:00
parent eb6c16d3dd
commit 7b913db1ce
3 changed files with 126 additions and 105 deletions
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41
imgui_internal.h
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@ -1180,9 +1180,10 @@ enum ImGuiNavMoveFlags_
ImGuiNavMoveFlags_WrapX = 1 << 2, // On failed request, request from opposite side one line down (when NavDir==right) or one line up (when NavDir==left)
ImGuiNavMoveFlags_WrapY = 1 << 3, // This is not super useful but provided for completeness
ImGuiNavMoveFlags_AllowCurrentNavId = 1 << 4, // Allow scoring and considering the current NavId as a move target candidate. This is used when the move source is offset (e.g. pressing PageDown actually needs to send a Up move request, if we are pressing PageDown from the bottom-most item we need to stay in place)
ImGuiNavMoveFlags_AlsoScoreVisibleSet = 1 << 5, // Store alternate result in NavMoveResultLocalVisibleSet that only comprise elements that are already fully visible (used by PageUp/PageDown)
ImGuiNavMoveFlags_AlsoScoreVisibleSet = 1 << 5, // Store alternate result in NavMoveResultLocalVisible that only comprise elements that are already fully visible (used by PageUp/PageDown)
ImGuiNavMoveFlags_ScrollToEdge = 1 << 6,
ImGuiNavMoveFlags_Forwarded = 1 << 7
ImGuiNavMoveFlags_Forwarded = 1 << 7,
ImGuiNavMoveFlags_DebugNoResult = 1 << 8
};
enum ImGuiNavLayer
@ -1511,27 +1512,31 @@ struct ImGuiContext
ImGuiKeyModFlags NavJustMovedToKeyMods;
ImGuiID NavNextActivateId; // Set by ActivateItem(), queued until next frame.
ImGuiInputSource NavInputSource; // Keyboard or Gamepad mode? THIS WILL ONLY BE None or NavGamepad or NavKeyboard.
ImRect NavScoringRect; // Rectangle used for scoring, in screen space. Based of window->NavRectRel[], modified for directional navigation scoring.
int NavScoringCount; // Metrics for debugging
ImGuiNavLayer NavLayer; // Layer we are navigating on. For now the system is hard-coded for 0=main contents and 1=menu/title bar, may expose layers later.
int NavIdTabCounter; // == NavWindow->DC.FocusIdxTabCounter at time of NavId processing
bool NavIdIsAlive; // Nav widget has been seen this frame ~~ NavRectRel is valid
bool NavMousePosDirty; // When set we will update mouse position if (io.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) if set (NB: this not enabled by default)
bool NavDisableHighlight; // When user starts using mouse, we hide gamepad/keyboard highlight (NB: but they are still available, which is why NavDisableHighlight isn't always != NavDisableMouseHover)
bool NavDisableMouseHover; // When user starts using gamepad/keyboard, we hide mouse hovering highlight until mouse is touched again.
// Navigation: Init & Move Requests
bool NavAnyRequest; // ~~ NavMoveRequest || NavInitRequest this is to perform early out in ItemAdd()
bool NavInitRequest; // Init request for appearing window to select first item
bool NavInitRequestFromMove;
ImGuiID NavInitResultId; // Init request result (first item of the window, or one for which SetItemDefaultFocus() was called)
ImRect NavInitResultRectRel; // Init request result rectangle (relative to parent window)
bool NavMoveRequest; // Move request for this frame
bool NavMoveRequestForwardToNextFrame;
ImGuiNavMoveFlags NavMoveRequestFlags;
ImGuiKeyModFlags NavMoveRequestKeyMods;
ImGuiDir NavMoveDir, NavMoveDirLast; // Direction of the move request (left/right/up/down), direction of the previous move request
bool NavMoveSubmitted; // Move request submitted, will process result on next NewFrame()
bool NavMoveScoringItems; // Move request submitted, still scoring incoming items
bool NavMoveForwardToNextFrame;
ImGuiNavMoveFlags NavMoveFlags;
ImGuiKeyModFlags NavMoveKeyMods;
ImGuiDir NavMoveDir; // Direction of the move request (left/right/up/down)
ImGuiDir NavMoveDirForDebug;
ImGuiDir NavMoveClipDir; // FIXME-NAV: Describe the purpose of this better. Might want to rename?
ImRect NavScoringRect; // Rectangle used for scoring, in screen space. Based of window->NavRectRel[], modified for directional navigation scoring.
int NavScoringCount; // Metrics for debugging
ImGuiNavItemData NavMoveResultLocal; // Best move request candidate within NavWindow
ImGuiNavItemData NavMoveResultLocalVisibleSet; // Best move request candidate within NavWindow that are mostly visible (when using ImGuiNavMoveFlags_AlsoScoreVisibleSet flag)
ImGuiNavItemData NavMoveResultLocalVisible; // Best move request candidate within NavWindow that are mostly visible (when using ImGuiNavMoveFlags_AlsoScoreVisibleSet flag)
ImGuiNavItemData NavMoveResultOther; // Best move request candidate within NavWindow's flattened hierarchy (when using ImGuiWindowFlags_NavFlattened flag)
// Navigation: Windowing (CTRL+TAB for list, or Menu button + keys or directional pads to move/resize)
@ -1714,8 +1719,6 @@ struct ImGuiContext
NavJustTabbedId = NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
NavJustMovedToKeyMods = ImGuiKeyModFlags_None;
NavInputSource = ImGuiInputSource_None;
NavScoringRect = ImRect();
NavScoringCount = 0;
NavLayer = ImGuiNavLayer_Main;
NavIdTabCounter = INT_MAX;
NavIdIsAlive = false;
@ -1726,11 +1729,13 @@ struct ImGuiContext
NavInitRequest = false;
NavInitRequestFromMove = false;
NavInitResultId = 0;
NavMoveRequest = false;
NavMoveRequestForwardToNextFrame = false;
NavMoveRequestFlags = ImGuiNavMoveFlags_None;
NavMoveRequestKeyMods = ImGuiKeyModFlags_None;
NavMoveDir = NavMoveDirLast = NavMoveClipDir = ImGuiDir_None;
NavMoveSubmitted = false;
NavMoveScoringItems = false;
NavMoveForwardToNextFrame = false;
NavMoveFlags = ImGuiNavMoveFlags_None;
NavMoveKeyMods = ImGuiKeyModFlags_None;
NavMoveDir = NavMoveDirForDebug = NavMoveClipDir = ImGuiDir_None;
NavScoringCount = 0;
NavWindowingTarget = NavWindowingTargetAnim = NavWindowingListWindow = NULL;
NavWindowingTimer = NavWindowingHighlightAlpha = 0.0f;
@ -2452,7 +2457,7 @@ namespace ImGui
// Gamepad/Keyboard Navigation
IMGUI_API void NavInitWindow(ImGuiWindow* window, bool force_reinit);
IMGUI_API bool NavMoveRequestButNoResultYet(); // Should be called ~NavMoveRequestIsActiveButNoResultYet()
IMGUI_API bool NavMoveRequestButNoResultYet();
IMGUI_API void NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, ImGuiNavMoveFlags move_flags);
IMGUI_API void NavMoveRequestCancel();
IMGUI_API void NavMoveRequestApplyResult();