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Focus, Nav: Merged bits from RangeSelect features to enable early manipulation of focus scope for styling purpose.

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FocusScopeId is tracked by nav scoring/request and stored in result.
It's all rather WIP and we should reorganize the SetNavIDXXX functions fiasco at some point (soon?).
Didn't separate FocusScope from SelectionScope for now, will re-investigate this later, this is the minimum commit to be able to do some styling.
This commit is contained in:
omar 2020-01-14 19:23:50 +01:00
parent 4f7bf7e96a
commit 2ebe08be40
3 changed files with 57 additions and 47 deletions
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51
imgui.cpp
View File

@ -2752,19 +2752,21 @@ void ImGui::GcAwakeTransientWindowBuffers(ImGuiWindow* window)
window->MemoryDrawListIdxCapacity = window->MemoryDrawListVtxCapacity = 0;
}
void ImGui::SetNavID(ImGuiID id, int nav_layer)
// FIXME-NAV: Refactor those functions into a single, more explicit one.
void ImGui::SetNavID(ImGuiID id, int nav_layer, int focus_scope_id)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.NavWindow);
IM_ASSERT(nav_layer == 0 || nav_layer == 1);
g.NavId = id;
g.NavFocusScopeId = focus_scope_id;
g.NavWindow->NavLastIds[nav_layer] = id;
}
void ImGui::SetNavIDWithRectRel(ImGuiID id, int nav_layer, const ImRect& rect_rel)
void ImGui::SetNavIDWithRectRel(ImGuiID id, int nav_layer, int focus_scope_id, const ImRect& rect_rel)
{
ImGuiContext& g = *GImGui;
SetNavID(id, nav_layer);
SetNavID(id, nav_layer, focus_scope_id);
g.NavWindow->NavRectRel[nav_layer] = rect_rel;
g.NavMousePosDirty = true;
g.NavDisableHighlight = false;
@ -2809,13 +2811,15 @@ void ImGui::SetFocusID(ImGuiID id, ImGuiWindow* window)
ImGuiContext& g = *GImGui;
IM_ASSERT(id != 0);
// Assume that SetFocusID() is called in the context where its NavLayer is the current layer, which is the case everywhere we call it.
// Assume that SetFocusID() is called in the context where its window->DC.NavLayerCurrent and window->DC.NavFocusScopeIdCurrent are valid.
// Note that window may be != g.CurrentWindow (e.g. SetFocusID call in InputTextEx for multi-line text)
const ImGuiNavLayer nav_layer = window->DC.NavLayerCurrent;
if (g.NavWindow != window)
g.NavInitRequest = false;
g.NavId = id;
g.NavWindow = window;
g.NavId = id;
g.NavLayer = nav_layer;
g.NavFocusScopeId = window->DC.NavFocusScopeIdCurrent;
window->NavLastIds[nav_layer] = id;
if (window->DC.LastItemId == id)
window->NavRectRel[nav_layer] = ImRect(window->DC.LastItemRect.Min - window->Pos, window->DC.LastItemRect.Max - window->Pos);
@ -5845,6 +5849,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->DC.NavLayerCurrentMask = (1 << ImGuiNavLayer_Main);
window->DC.NavLayerActiveMask = window->DC.NavLayerActiveMaskNext;
window->DC.NavLayerActiveMaskNext = 0x00;
window->DC.NavFocusScopeIdCurrent = 0;
window->DC.NavHideHighlightOneFrame = false;
window->DC.NavHasScroll = (window->ScrollMax.y > 0.0f);
@ -6047,6 +6052,7 @@ void ImGui::FocusWindow(ImGuiWindow* window)
g.NavMousePosDirty = true;
g.NavInitRequest = false;
g.NavId = window ? window->NavLastIds[0] : 0; // Restore NavId
g.NavFocusScopeId = 0;
g.NavIdIsAlive = false;
g.NavLayer = ImGuiNavLayer_Main;
//IMGUI_DEBUG_LOG("FocusWindow(\"%s\")\n", window ? window->Name : NULL);
@ -8039,21 +8045,22 @@ static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, con
#endif
if (new_best)
{
result->ID = id;
result->SelectScopeId = g.MultiSelectScopeId;
result->Window = window;
result->ID = id;
result->FocusScopeId = window->DC.NavFocusScopeIdCurrent;
result->RectRel = nav_bb_rel;
}
// Features like PageUp/PageDown need to maintain a separate score for the visible set of items.
const float VISIBLE_RATIO = 0.70f;
if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
{
result = &g.NavMoveResultLocalVisibleSet;
result->ID = id;
result->SelectScopeId = g.MultiSelectScopeId;
result->Window = window;
result->ID = id;
result->FocusScopeId = window->DC.NavFocusScopeIdCurrent;
result->RectRel = nav_bb_rel;
}
}
@ -8063,6 +8070,7 @@ static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, con
{
g.NavWindow = window; // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
g.NavLayer = window->DC.NavLayerCurrent;
g.NavFocusScopeId = window->DC.NavFocusScopeIdCurrent;
g.NavIdIsAlive = true;
g.NavIdTabCounter = window->DC.FocusCounterTabStop;
window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel; // Store item bounding box (relative to window position)
@ -8153,10 +8161,11 @@ static void NavRestoreLayer(ImGuiNavLayer layer)
g.NavLayer = layer;
if (layer == 0)
g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
ImGuiWindow* window = g.NavWindow;
if (layer == 0 && window->NavLastIds[0] != 0)
ImGui::SetNavIDWithRectRel(window->NavLastIds[0], layer, 0, window->NavRectRel[0]);
else
ImGui::NavInitWindow(g.NavWindow, true);
ImGui::NavInitWindow(window, true);
}
static inline void ImGui::NavUpdateAnyRequestFlag()
@ -8179,7 +8188,7 @@ void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
//IMGUI_DEBUG_LOG("[Nav] NavInitWindow() init_for_nav=%d, window=\"%s\", layer=%d\n", init_for_nav, window->Name, g.NavLayer);
if (init_for_nav)
{
SetNavID(0, g.NavLayer);
SetNavID(0, g.NavLayer, 0);
g.NavInitRequest = true;
g.NavInitRequestFromMove = false;
g.NavInitResultId = 0;
@ -8189,6 +8198,7 @@ void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
else
{
g.NavId = window->NavLastIds[0];
g.NavFocusScopeId = 0;
}
}
@ -8295,9 +8305,9 @@ static void ImGui::NavUpdate()
// Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
//IMGUI_DEBUG_LOG("[Nav] Apply NavInitRequest result: 0x%08X Layer %d in \"%s\"\n", g.NavInitResultId, g.NavLayer, g.NavWindow->Name);
if (g.NavInitRequestFromMove)
SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, 0, g.NavInitResultRectRel);
else
SetNavID(g.NavInitResultId, g.NavLayer);
SetNavID(g.NavInitResultId, g.NavLayer, 0);
g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
}
g.NavInitRequest = false;
@ -8364,7 +8374,7 @@ static void ImGui::NavUpdate()
ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
IM_ASSERT(child_window->ChildId != 0);
FocusWindow(parent_window);
SetNavID(child_window->ChildId, 0);
SetNavID(child_window->ChildId, 0, 0);
// Reassigning with same value, we're being explicit here.
g.NavIdIsAlive = false; // -V1048
if (g.NavDisableMouseHover)
@ -8386,7 +8396,7 @@ static void ImGui::NavUpdate()
// Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
g.NavWindow->NavLastIds[0] = 0;
g.NavId = 0;
g.NavId = g.NavFocusScopeId = 0;
}
}
@ -8506,7 +8516,7 @@ static void ImGui::NavUpdate()
float pad = window->CalcFontSize() * 0.5f;
window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
g.NavId = 0;
g.NavId = g.NavFocusScopeId = 0;
}
g.NavMoveFromClampedRefRect = false;
}
@ -8586,9 +8596,10 @@ static void ImGui::NavUpdateMoveResult()
{
// Don't set NavJustMovedToId if just landed on the same spot (which may happen with ImGuiNavMoveFlags_AllowCurrentNavId)
g.NavJustMovedToId = result->ID;
g.NavJustMovedToMultiSelectScopeId = result->SelectScopeId;
g.NavJustMovedToFocusScopeId = result->FocusScopeId;
}
SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
SetNavIDWithRectRel(result->ID, g.NavLayer, result->FocusScopeId, result->RectRel);
g.NavMoveFromClampedRefRect = false;
}

35
imgui_internal.h
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@ -877,16 +877,16 @@ struct ImDrawDataBuilder
struct ImGuiNavMoveResult
{
ImGuiID ID; // Best candidate
ImGuiID SelectScopeId;// Best candidate window current selectable group ID
ImGuiWindow* Window; // Best candidate window
ImGuiID ID; // Best candidate ID
ImGuiID FocusScopeId; // Best candidate focus scope ID
float DistBox; // Best candidate box distance to current NavId
float DistCenter; // Best candidate center distance to current NavId
float DistAxial;
ImRect RectRel; // Best candidate bounding box in window relative space
ImGuiNavMoveResult() { Clear(); }
void Clear() { ID = SelectScopeId = 0; Window = NULL; DistBox = DistCenter = DistAxial = FLT_MAX; RectRel = ImRect(); }
void Clear() { Window = NULL; ID = FocusScopeId = 0; DistBox = DistCenter = DistAxial = FLT_MAX; RectRel = ImRect(); }
};
enum ImGuiNextWindowDataFlags_
@ -920,7 +920,7 @@ struct ImGuiNextWindowData
ImVec2 MenuBarOffsetMinVal; // *Always on* This is not exposed publicly, so we don't clear it.
ImGuiNextWindowData() { memset(this, 0, sizeof(*this)); }
inline void ClearFlags() { Flags = ImGuiNextWindowDataFlags_None; } // Also cleared by ItemAdd()
inline void ClearFlags() { Flags = ImGuiNextWindowDataFlags_None; }
};
enum ImGuiNextItemDataFlags_
@ -933,12 +933,13 @@ enum ImGuiNextItemDataFlags_
struct ImGuiNextItemData
{
ImGuiNextItemDataFlags Flags;
float Width; // Set by SetNextItemWidth().
bool OpenVal; // Set by SetNextItemOpen() function.
float Width; // Set by SetNextItemWidth()
ImGuiID FocusScopeId; // Set by SetNextItemMultiSelectData() (!= 0 signify value has been set, so it's an alternate version of HasSelectionData, we don't use Flags for this because they are cleared too early. This is mostly used for debugging)
ImGuiCond OpenCond;
bool OpenVal; // Set by SetNextItemOpen()
ImGuiNextItemData() { memset(this, 0, sizeof(*this)); }
inline void ClearFlags() { Flags = ImGuiNextItemDataFlags_None; }
inline void ClearFlags() { Flags = ImGuiNextItemDataFlags_None; } // Also cleared manually by ItemAdd()!
};
//-----------------------------------------------------------------------------
@ -1038,13 +1039,15 @@ struct ImGuiContext
// Gamepad/keyboard Navigation
ImGuiWindow* NavWindow; // Focused window for navigation. Could be called 'FocusWindow'
ImGuiID NavId; // Focused item for navigation
ImGuiID NavFocusScopeId;
ImGuiID NavActivateId; // ~~ (g.ActiveId == 0) && IsNavInputPressed(ImGuiNavInput_Activate) ? NavId : 0, also set when calling ActivateItem()
ImGuiID NavActivateDownId; // ~~ IsNavInputDown(ImGuiNavInput_Activate) ? NavId : 0
ImGuiID NavActivatePressedId; // ~~ IsNavInputPressed(ImGuiNavInput_Activate) ? NavId : 0
ImGuiID NavInputId; // ~~ IsNavInputPressed(ImGuiNavInput_Input) ? NavId : 0
ImGuiID NavJustTabbedId; // Just tabbed to this id.
ImGuiID NavJustMovedToId; // Just navigated to this id (result of a successfully MoveRequest).
ImGuiID NavJustMovedToMultiSelectScopeId; // Just navigated to this select scope id (result of a successfully MoveRequest).
ImGuiID NavJustMovedToFocusScopeId; // Just navigated to this focus scope id (result of a successfully MoveRequest).
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 NavScoringRectScreen; // Rectangle used for scoring, in screen space. Based of window->DC.NavRefRectRel[], modified for directional navigation scoring.
@ -1085,10 +1088,6 @@ struct ImGuiContext
int FocusRequestNextCounterTabStop; // "
bool FocusTabPressed; //
// Range-Select/Multi-Select
// [This is unused in this branch, but left here to facilitate merging/syncing multiple branches]
ImGuiID MultiSelectScopeId;
// Render
ImDrawData DrawData; // Main ImDrawData instance to pass render information to the user
ImDrawDataBuilder DrawDataBuilder;
@ -1218,8 +1217,8 @@ struct ImGuiContext
LastActiveIdTimer = 0.0f;
NavWindow = NULL;
NavId = NavActivateId = NavActivateDownId = NavActivatePressedId = NavInputId = 0;
NavJustTabbedId = NavJustMovedToId = NavJustMovedToMultiSelectScopeId = NavNextActivateId = 0;
NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = NavInputId = 0;
NavJustTabbedId = NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
NavInputSource = ImGuiInputSource_None;
NavScoringRectScreen = ImRect();
NavScoringCount = 0;
@ -1247,8 +1246,6 @@ struct ImGuiContext
FocusRequestNextCounterRegular = FocusRequestNextCounterTabStop = INT_MAX;
FocusTabPressed = false;
MultiSelectScopeId = 0;
DimBgRatio = 0.0f;
BackgroundDrawList._OwnerName = "##Background"; // Give it a name for debugging
ForegroundDrawList._OwnerName = "##Foreground"; // Give it a name for debugging
@ -1334,6 +1331,7 @@ struct IMGUI_API ImGuiWindowTempData
int NavLayerCurrentMask; // = (1 << NavLayerCurrent) used by ItemAdd prior to clipping.
int NavLayerActiveMask; // Which layer have been written to (result from previous frame)
int NavLayerActiveMaskNext; // Which layer have been written to (buffer for current frame)
ImGuiID NavFocusScopeIdCurrent; // Current focus scope ID while appending
bool NavHideHighlightOneFrame;
bool NavHasScroll; // Set when scrolling can be used (ScrollMax > 0.0f)
@ -1378,6 +1376,7 @@ struct IMGUI_API ImGuiWindowTempData
NavLayerActiveMask = NavLayerActiveMaskNext = 0x00;
NavLayerCurrent = ImGuiNavLayer_Main;
NavLayerCurrentMask = (1 << ImGuiNavLayer_Main);
NavFocusScopeIdCurrent = 0;
NavHideHighlightOneFrame = false;
NavHasScroll = false;
@ -1701,8 +1700,8 @@ namespace ImGui
IMGUI_API ImVec2 GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInputReadMode mode, float slow_factor = 0.0f, float fast_factor = 0.0f);
IMGUI_API int CalcTypematicRepeatAmount(float t0, float t1, float repeat_delay, float repeat_rate);
IMGUI_API void ActivateItem(ImGuiID id); // Remotely activate a button, checkbox, tree node etc. given its unique ID. activation is queued and processed on the next frame when the item is encountered again.
IMGUI_API void SetNavID(ImGuiID id, int nav_layer);
IMGUI_API void SetNavIDWithRectRel(ImGuiID id, int nav_layer, const ImRect& rect_rel);
IMGUI_API void SetNavID(ImGuiID id, int nav_layer, int focus_scope_id);
IMGUI_API void SetNavIDWithRectRel(ImGuiID id, int nav_layer, int focus_scope_id, const ImRect& rect_rel);
// Inputs
// FIXME: Eventually we should aim to move e.g. IsActiveIdUsingKey() into IsKeyXXX functions.

8
imgui_widgets.cpp
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@ -5312,9 +5312,9 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
bool hovered, held;
bool pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
bool toggled = false;
if (!is_leaf)
{
bool toggled = false;
if (pressed)
{
if ((flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) == 0 || (g.NavActivateId == id))
@ -5444,7 +5444,7 @@ void ImGui::TreePop()
if (g.NavMoveDir == ImGuiDir_Left && g.NavWindow == window && NavMoveRequestButNoResultYet())
if (g.NavIdIsAlive && (window->DC.TreeJumpToParentOnPopMask & tree_depth_mask))
{
SetNavID(window->IDStack.back(), g.NavLayer);
SetNavID(window->IDStack.back(), g.NavLayer, 0);
NavMoveRequestCancel();
}
window->DC.TreeJumpToParentOnPopMask &= tree_depth_mask - 1;
@ -5600,7 +5600,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
if (!g.NavDisableMouseHover && g.NavWindow == window && g.NavLayer == window->DC.NavLayerCurrent)
{
g.NavDisableHighlight = true;
SetNavID(id, window->DC.NavLayerCurrent);
SetNavID(id, window->DC.NavLayerCurrent, window->DC.NavFocusScopeIdCurrent);
}
}
if (pressed)
@ -6077,7 +6077,7 @@ void ImGui::EndMenuBar()
const ImGuiNavLayer layer = ImGuiNavLayer_Menu;
IM_ASSERT(window->DC.NavLayerActiveMaskNext & (1 << layer)); // Sanity check
FocusWindow(window);
SetNavIDWithRectRel(window->NavLastIds[layer], layer, window->NavRectRel[layer]);
SetNavIDWithRectRel(window->NavLastIds[layer], layer, 0, window->NavRectRel[layer]);
g.NavLayer = layer;
g.NavDisableHighlight = true; // Hide highlight for the current frame so we don't see the intermediary selection.
g.NavMoveRequestForward = ImGuiNavForward_ForwardQueued;