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Nav, Tabbing: refactor tabbing system to support clipped items, scrolling, using nav queries. (#4449)

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Not using counter/modulo anymore and special provisions to handle tab wrapping with ImGuiListClipper. Wrapping may be done better as a next-frame forwarded request.
Also one extra step toward #3949 #3985
This commit is contained in:
ocornut
2021-10-08 15:24:09 +02:00
parent f01a6d3e8f
commit 1a7526dcd4
5 changed files with 138 additions and 152 deletions
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35
imgui_internal.h
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@ -1247,9 +1247,10 @@ enum ImGuiNavMoveFlags_
ImGuiNavMoveFlags_ScrollToEdgeY = 1 << 6, // Force scrolling to min/max (used by Home/End) // FIXME-NAV: Aim to remove or reword, probably unnecessary
ImGuiNavMoveFlags_Forwarded = 1 << 7,
ImGuiNavMoveFlags_DebugNoResult = 1 << 8, // Dummy scoring for debug purpose, don't apply result
ImGuiNavMoveFlags_Tabbing = 1 << 9, // == Focus + Activate if item is Inputable + DontChangeNavHighlight
ImGuiNavMoveFlags_Activate = 1 << 10,
ImGuiNavMoveFlags_DontSetNavHighlight = 1 << 11 // Do not alter the visible state of keyboard vs mouse nav highlight
ImGuiNavMoveFlags_FocusApi = 1 << 9,
ImGuiNavMoveFlags_Tabbing = 1 << 10, // == Focus + Activate if item is Inputable + DontChangeNavHighlight
ImGuiNavMoveFlags_Activate = 1 << 11,
ImGuiNavMoveFlags_DontSetNavHighlight = 1 << 12 // Do not alter the visible state of keyboard vs mouse nav highlight
};
enum ImGuiNavLayer
@ -1582,7 +1583,6 @@ struct ImGuiContext
ImGuiID NavActivatePressedId; // ~~ IsNavInputPressed(ImGuiNavInput_Activate) ? NavId : 0
ImGuiID NavActivateInputId; // ~~ IsNavInputPressed(ImGuiNavInput_Input) ? NavId : 0; ImGuiActivateFlags_PreferInput will be set and NavActivateId will be 0.
ImGuiActivateFlags NavActivateFlags;
ImGuiID NavJustTabbedId; // Just tabbed to this id.
ImGuiID NavJustMovedToId; // Just navigated to this id (result of a successfully MoveRequest).
ImGuiID NavJustMovedToFocusScopeId; // Just navigated to this focus scope id (result of a successfully MoveRequest).
ImGuiKeyModFlags NavJustMovedToKeyMods;
@ -1590,7 +1590,6 @@ struct ImGuiContext
ImGuiActivateFlags NavNextActivateFlags;
ImGuiInputSource NavInputSource; // Keyboard or Gamepad mode? THIS WILL ONLY BE None or NavGamepad or NavKeyboard.
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)
@ -1614,10 +1613,12 @@ struct ImGuiContext
ImRect NavScoringRect; // Rectangle used for scoring, in screen space. Based of window->NavRectRel[], modified for directional navigation scoring.
ImRect NavScoringNoClipRect; // Some nav operations (such as PageUp/PageDown) enforce a region which clipper will attempt to always keep submitted
int NavScoringDebugCount; // Metrics for debugging
int NavTabbingInputableRemaining; // >0 when counting items for tabbing
int NavTabbingDir; // Generally -1 or +1, 0 when tabbing without a nav id
int NavTabbingCounter; // >0 when counting items for tabbing
ImGuiNavItemData NavMoveResultLocal; // Best move request candidate within NavWindow
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)
ImGuiNavItemData NavTabbingResultFirst; // First tabbing request candidate within NavWindow and flattened hierarchy
// Navigation: Windowing (CTRL+TAB for list, or Menu button + keys or directional pads to move/resize)
ImGuiWindow* NavWindowingTarget; // Target window when doing CTRL+Tab (or Pad Menu + FocusPrev/Next), this window is temporarily displayed top-most!
@ -1627,13 +1628,6 @@ struct ImGuiContext
float NavWindowingHighlightAlpha;
bool NavWindowingToggleLayer;
// Legacy Focus/Tabbing system (older than Nav, active even if Nav is disabled, misnamed. FIXME-NAV: This needs a redesign!)
ImGuiWindow* TabFocusRequestCurrWindow; //
ImGuiWindow* TabFocusRequestNextWindow; //
int TabFocusRequestCurrCounterTabStop; // Tab item being requested for focus, stored as an index
int TabFocusRequestNextCounterTabStop; // "
bool TabFocusPressed; // Set in NewFrame() when user pressed Tab
// Render
float DimBgRatio; // 0.0..1.0 animation when fading in a dimming background (for modal window and CTRL+TAB list)
ImGuiMouseCursor MouseCursor;
@ -1800,12 +1794,11 @@ struct ImGuiContext
NavWindow = NULL;
NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = NavActivateInputId = 0;
NavJustTabbedId = NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
NavActivateFlags = NavNextActivateFlags = ImGuiActivateFlags_None;
NavJustMovedToKeyMods = ImGuiKeyModFlags_None;
NavInputSource = ImGuiInputSource_None;
NavLayer = ImGuiNavLayer_Main;
NavIdTabCounter = INT_MAX;
NavIdIsAlive = false;
NavMousePosDirty = false;
NavDisableHighlight = true;
@ -1822,17 +1815,13 @@ struct ImGuiContext
NavMoveKeyMods = ImGuiKeyModFlags_None;
NavMoveDir = NavMoveDirForDebug = NavMoveClipDir = ImGuiDir_None;
NavScoringDebugCount = 0;
NavTabbingInputableRemaining = 0;
NavTabbingDir = 0;
NavTabbingCounter = 0;
NavWindowingTarget = NavWindowingTargetAnim = NavWindowingListWindow = NULL;
NavWindowingTimer = NavWindowingHighlightAlpha = 0.0f;
NavWindowingToggleLayer = false;
TabFocusRequestCurrWindow = TabFocusRequestNextWindow = NULL;
TabFocusRequestCurrCounterTabStop = INT_MAX;
TabFocusRequestNextCounterTabStop = INT_MAX;
TabFocusPressed = false;
DimBgRatio = 0.0f;
MouseCursor = ImGuiMouseCursor_Arrow;
@ -1939,7 +1928,6 @@ struct IMGUI_API ImGuiWindowTempData
int CurrentTableIdx; // Current table index (into g.Tables)
ImGuiLayoutType LayoutType;
ImGuiLayoutType ParentLayoutType; // Layout type of parent window at the time of Begin()
int FocusCounterTabStop; // (Legacy Focus/Tabbing system) Same, but only count widgets which you can Tab through.
// Local parameters stacks
// We store the current settings outside of the vectors to increase memory locality (reduce cache misses). The vectors are rarely modified. Also it allows us to not heap allocate for short-lived windows which are not using those settings.
@ -2501,7 +2489,6 @@ namespace ImGui
IMGUI_API void ItemSize(const ImRect& bb, float text_baseline_y = -1.0f);
IMGUI_API bool ItemAdd(const ImRect& bb, ImGuiID id, const ImRect* nav_bb = NULL, ImGuiItemFlags extra_flags = 0);
IMGUI_API bool ItemHoverable(const ImRect& bb, ImGuiID id);
IMGUI_API void ItemInputable(ImGuiWindow* window, ImGuiID id);
IMGUI_API bool IsClippedEx(const ImRect& bb, ImGuiID id);
IMGUI_API ImVec2 CalcItemSize(ImVec2 size, float default_w, float default_h);
IMGUI_API float CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x);
@ -2561,7 +2548,7 @@ namespace ImGui
IMGUI_API bool NavMoveRequestButNoResultYet();
IMGUI_API void NavMoveRequestSubmit(ImGuiDir move_dir, ImGuiDir clip_dir, ImGuiNavMoveFlags move_flags, ImGuiScrollFlags scroll_flags);
IMGUI_API void NavMoveRequestForward(ImGuiDir move_dir, ImGuiDir clip_dir, ImGuiNavMoveFlags move_flags, ImGuiScrollFlags scroll_flags);
IMGUI_API void NavMoveRequestResolveWithLastItem();
IMGUI_API void NavMoveRequestResolveWithLastItem(ImGuiNavItemData* result);
IMGUI_API void NavMoveRequestCancel();
IMGUI_API void NavMoveRequestApplyResult();
IMGUI_API void NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags);