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Navigation: Tap NavMenu to access menu and close buttons, hold to focus/resize (#323)

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Introducing a concept of NavLayer to filter navigable items
This commit is contained in:
ocornut
2016-07-24 14:56:14 +02:00
parent c3aa36d9ab
commit aeabda5a5f
2 changed files with 133 additions and 56 deletions
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21
imgui_internal.h
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@ -410,6 +410,9 @@ struct ImGuiContext
ImRect NavRefRectRel, NavScoringRectScreen;// Reference rectangle, in window space. Modified rectangle for directional navigation scoring, in screen space.
ImGuiWindow* NavWindow; //
ImGuiWindow* NavWindowingTarget;
float NavWindowingDisplayAlpha;
bool NavWindowingToggleLayer;
int 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 ~~ NavRefRectRel is valid
bool NavMousePosDirty;
@ -417,6 +420,7 @@ struct ImGuiContext
bool NavDisableMouseHover; // When user starts using gamepad/keyboard, we disable mouse hovering until mouse is touched again
bool NavInitDefaultRequest; // Init request for appearing window to select first item
ImGuiID NavInitDefaultResultId;
ImRect NavInitDefaultResultRectRel;
bool NavInitDefaultResultExplicit; // Whether the result was explicitly requested with SetItemDefaultFocus()
bool NavMoveRequest; // Move request for this frame
ImGuiNavDir NavMoveDir; // West/East/North/South
@ -514,6 +518,8 @@ struct ImGuiContext
NavRefRectRel = NavScoringRectScreen = ImRect();
NavWindow = NULL;
NavWindowingTarget = NULL;
NavWindowingDisplayAlpha = 0.0f;
NavWindowingToggleLayer = false;
NavIdTabCounter = INT_MAX;
NavIdIsAlive = false;
NavMousePosDirty = false;
@ -586,10 +592,11 @@ struct IMGUI_API ImGuiDrawContext
int TreeDepth;
ImGuiID LastItemId;
ImRect LastItemRect;
bool LastItemHoveredAndUsable; // Item rectangle is hovered, and its window is currently interactable with (not blocked by a popup preventing access to the window)
bool LastItemHoveredRect; // Item rectangle is hovered, but its window may or not be currently interactable with (might be blocked by a popup preventing access to the window)
bool NavHasItems, NavHasItemsNext; // Set when has any navigatable item
bool NavHasScroll; // Set when scrolling can be used (ScrollMax > 0.0f)
bool LastItemHoveredAndUsable; // Item rectangle is hovered, and its window is currently interactable with (not blocked by a popup preventing access to the window)
bool LastItemHoveredRect; // Item rectangle is hovered, but its window may or not be currently interactable with (might be blocked by a popup preventing access to the window)
bool NavHasScroll; // Set when scrolling can be used (ScrollMax > 0.0f)
int NavLayerCurrent; // Current layer, 0..31 (we currently only use 0..1)
int NavLayerActiveFlags, NavLayerActiveFlagsNext; // Which layer have been written to.
bool MenuBarAppending;
float MenuBarOffsetX;
ImVector<ImGuiWindow*> ChildWindows;
@ -633,7 +640,9 @@ struct IMGUI_API ImGuiDrawContext
LastItemId = 0;
LastItemRect = ImRect(0.0f,0.0f,0.0f,0.0f);
LastItemHoveredAndUsable = LastItemHoveredRect = false;
NavHasItems = NavHasItemsNext = NavHasScroll = false;
NavHasScroll = false;
NavLayerActiveFlags = NavLayerActiveFlagsNext = 0x00;
NavLayerCurrent = 0;
MenuBarAppending = false;
MenuBarOffsetX = 0.0f;
StateStorage = NULL;
@ -686,7 +695,7 @@ struct IMGUI_API ImGuiWindow
bool SkipItems; // == Visible && !Collapsed
int BeginCount; // Number of Begin() during the current frame (generally 0 or 1, 1+ if appending via multiple Begin/End pairs)
ImGuiID PopupId; // ID in the popup stack when this window is used as a popup/menu (because we use generic Name/ID for recycling)
ImGuiID NavLastId; // Last known NavId for this window
ImGuiID NavLastId; // Last known NavId for this window, for nav layer 0 only.
int AutoFitFramesX, AutoFitFramesY;
bool AutoFitOnlyGrows;
int AutoPosLastDirection;