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Internal: Tabbing/Focus: Tidying up old code, moved some state to context instead of window. Storing new data will allow us to fix the bug mentioned in #2215 (probably in next commit).

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This commit is contained in:
omar
2019-03-05 19:37:20 +01:00
parent 9c45072cb0
commit 26328fc9fe
3 changed files with 65 additions and 42 deletions
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78
imgui.cpp
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@ -2552,10 +2552,6 @@ ImGuiWindow::ImGuiWindow(ImGuiContext* context, const char* name)
NavLastIds[0] = NavLastIds[1] = 0;
NavRectRel[0] = NavRectRel[1] = ImRect();
NavLastChildNavWindow = NULL;
FocusIdxAllCounter = FocusIdxTabCounter = -1;
FocusIdxAllRequestCurrent = FocusIdxTabRequestCurrent = INT_MAX;
FocusIdxAllRequestNext = FocusIdxTabRequestNext = INT_MAX;
}
ImGuiWindow::~ImGuiWindow()
@ -2901,22 +2897,28 @@ bool ImGui::FocusableItemRegister(ImGuiWindow* window, ImGuiID id)
// Increment counters
const bool is_tab_stop = (window->DC.ItemFlags & (ImGuiItemFlags_NoTabStop | ImGuiItemFlags_Disabled)) == 0;
window->FocusIdxAllCounter++;
window->DC.FocusCounterAll++;
if (is_tab_stop)
window->FocusIdxTabCounter++;
window->DC.FocusCounterTab++;
// Process TAB/Shift-TAB to tab *OUT* of the currently focused item.
// (Note that we can always TAB out of a widget that doesn't allow tabbing in)
if (g.ActiveId == id && g.FocusTabPressed && !(g.ActiveIdBlockNavInputFlags & (1 << ImGuiNavInput_KeyTab_)))
if (window->FocusIdxAllRequestNext == INT_MAX && window->FocusIdxTabRequestNext == INT_MAX)
window->FocusIdxTabRequestNext = window->FocusIdxTabCounter + (g.IO.KeyShift ? (is_tab_stop ? -1 : 0) : +1); // Modulo on index will be applied at the end of frame once we've got the total counter of items.
if (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent)
return true;
if (is_tab_stop && window->FocusIdxTabCounter == window->FocusIdxTabRequestCurrent)
if (g.ActiveId == id && g.FocusTabPressed && !(g.ActiveIdBlockNavInputFlags & (1 << ImGuiNavInput_KeyTab_)) && g.FocusRequestNextWindow == NULL)
{
g.NavJustTabbedId = id;
return true;
g.FocusRequestNextWindow = window;
g.FocusRequestNextCounterTab = window->DC.FocusCounterTab + (g.IO.KeyShift ? (is_tab_stop ? -1 : 0) : +1); // Modulo on index will be applied at the end of frame once we've got the total counter of items.
}
// Handle focus requests
if (g.FocusRequestCurrWindow == window)
{
if (window->DC.FocusCounterAll == g.FocusRequestCurrCounterAll)
return true;
if (is_tab_stop && window->DC.FocusCounterTab == g.FocusRequestCurrCounterTab)
{
g.NavJustTabbedId = id;
return true;
}
}
return false;
@ -2924,8 +2926,8 @@ bool ImGui::FocusableItemRegister(ImGuiWindow* window, ImGuiID id)
void ImGui::FocusableItemUnregister(ImGuiWindow* window)
{
window->FocusIdxAllCounter--;
window->FocusIdxTabCounter--;
window->DC.FocusCounterAll--;
window->DC.FocusCounterTab--;
}
ImVec2 ImGui::CalcItemSize(ImVec2 size, float default_x, float default_y)
@ -3515,15 +3517,34 @@ void ImGui::NewFrame()
UpdateMouseWheel();
// Pressing TAB activate widget focus
// (This code is old and will be redesigned for Nav. In the meanwhile we use g.NavTabRequest as storage but this doesn't need ImGuiConfigFlags_NavEnableKeyboard to work!)
g.FocusTabPressed = (g.NavWindow && g.NavWindow->Active && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab));
if (g.ActiveId == 0 && g.FocusTabPressed)
{
// Note that SetKeyboardFocusHere() sets the Next fields mid-frame. To be consistent we also
// manipulate the Next fields even, even though they will be turned into Curr fields by the code below.
g.FocusRequestNextWindow = g.NavWindow;
g.FocusRequestNextCounterAll = INT_MAX;
if (g.NavId != 0 && g.NavIdTabCounter != INT_MAX)
g.NavWindow->FocusIdxTabRequestNext = g.NavIdTabCounter + 1 + (g.IO.KeyShift ? -1 : 1);
g.FocusRequestNextCounterTab = g.NavIdTabCounter + 1 + (g.IO.KeyShift ? -1 : 1);
else
g.NavWindow->FocusIdxTabRequestNext = g.IO.KeyShift ? -1 : 0;
g.FocusRequestNextCounterTab = g.IO.KeyShift ? -1 : 0;
}
// Turn queued focus request into current one
g.FocusRequestCurrWindow = NULL;
g.FocusRequestCurrCounterAll = g.FocusRequestCurrCounterTab = INT_MAX;
if (g.FocusRequestNextWindow != NULL)
{
ImGuiWindow* window = g.FocusRequestNextWindow;
g.FocusRequestCurrWindow = window;
if (g.FocusRequestNextCounterAll != INT_MAX && window->DC.FocusCounterAll != -1)
g.FocusRequestCurrCounterAll = ImModPositive(g.FocusRequestNextCounterAll, window->DC.FocusCounterAll + 1);
if (g.FocusRequestNextCounterTab != INT_MAX && window->DC.FocusCounterTab != -1)
g.FocusRequestCurrCounterTab = ImModPositive(g.FocusRequestNextCounterTab, window->DC.FocusCounterTab + 1);
g.FocusRequestNextWindow = NULL;
g.FocusRequestNextCounterAll = g.FocusRequestNextCounterTab = INT_MAX;
}
g.NavIdTabCounter = INT_MAX;
// Mark all windows as not visible
@ -5170,12 +5191,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
// Lock window rounding for the frame (so that altering them doesn't cause inconsistencies)
window->WindowRounding = (flags & ImGuiWindowFlags_ChildWindow) ? style.ChildRounding : ((flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiWindowFlags_Modal)) ? style.PopupRounding : style.WindowRounding;
// Prepare for item focus requests
window->FocusIdxAllRequestCurrent = (window->FocusIdxAllRequestNext == INT_MAX || window->FocusIdxAllCounter == -1) ? INT_MAX : ImModPositive(window->FocusIdxAllRequestNext, window->FocusIdxAllCounter + 1);
window->FocusIdxTabRequestCurrent = (window->FocusIdxTabRequestNext == INT_MAX || window->FocusIdxTabCounter == -1) ? INT_MAX : ImModPositive(window->FocusIdxTabRequestNext, window->FocusIdxTabCounter + 1);
window->FocusIdxAllCounter = window->FocusIdxTabCounter = -1;
window->FocusIdxAllRequestNext = window->FocusIdxTabRequestNext = INT_MAX;
// Apply scrolling
window->Scroll = CalcNextScrollFromScrollTargetAndClamp(window, true);
window->ScrollTarget = ImVec2(FLT_MAX, FLT_MAX);
@ -5350,6 +5365,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->DC.ChildWindows.resize(0);
window->DC.LayoutType = ImGuiLayoutType_Vertical;
window->DC.ParentLayoutType = parent_window ? parent_window->DC.LayoutType : ImGuiLayoutType_Vertical;
window->DC.FocusCounterAll = window->DC.FocusCounterTab = -1;
window->DC.ItemFlags = parent_window ? parent_window->DC.ItemFlags : ImGuiItemFlags_Default_;
window->DC.ItemWidth = window->ItemWidthDefault;
window->DC.TextWrapPos = -1.0f; // disabled
@ -6462,9 +6478,11 @@ void ImGui::ActivateItem(ImGuiID id)
void ImGui::SetKeyboardFocusHere(int offset)
{
IM_ASSERT(offset >= -1); // -1 is allowed but not below
ImGuiWindow* window = GetCurrentWindow();
window->FocusIdxAllRequestNext = window->FocusIdxAllCounter + 1 + offset;
window->FocusIdxTabRequestNext = INT_MAX;
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
g.FocusRequestNextWindow = window;
g.FocusRequestNextCounterAll = window->DC.FocusCounterAll + 1 + offset;
g.FocusRequestNextCounterTab = INT_MAX;
}
void ImGui::SetItemDefaultFocus()
@ -7373,7 +7391,7 @@ 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.NavIdIsAlive = true;
g.NavIdTabCounter = window->FocusIdxTabCounter;
g.NavIdTabCounter = window->DC.FocusCounterTab;
window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel; // Store item bounding box (relative to window position)
}
}