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Internals: Nav: shallow refactor.

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This commit is contained in:
ocornut 2020-08-26 12:39:29 +02:00
parent 833eb771f2
commit 8d71bc2132
1 changed files with 33 additions and 29 deletions
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62
imgui.cpp
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@ -8515,7 +8515,9 @@ ImVec2 ImGui::GetNavInputAmount2d(ImGuiNavDirSourceFlags dir_sources, ImGuiInput
static void ImGui::NavUpdate()
{
ImGuiContext& g = *GImGui;
g.IO.WantSetMousePos = false;
ImGuiIO& io = g.IO;
io.WantSetMousePos = false;
g.NavWrapRequestWindow = NULL;
g.NavWrapRequestFlags = ImGuiNavMoveFlags_None;
#if 0
@ -8524,16 +8526,16 @@ static void ImGui::NavUpdate()
// Set input source as Gamepad when buttons are pressed (as some features differs when used with Gamepad vs Keyboard)
// (do it before we map Keyboard input!)
bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
bool nav_keyboard_active = (io.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
bool nav_gamepad_active = (io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (io.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
if (nav_gamepad_active)
if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
if (io.NavInputs[ImGuiNavInput_Activate] > 0.0f || io.NavInputs[ImGuiNavInput_Input] > 0.0f || io.NavInputs[ImGuiNavInput_Cancel] > 0.0f || io.NavInputs[ImGuiNavInput_Menu] > 0.0f)
g.NavInputSource = ImGuiInputSource_NavGamepad;
// Update Keyboard->Nav inputs mapping
if (nav_keyboard_active)
{
#define NAV_MAP_KEY(_KEY, _NAV_INPUT) do { if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; } } while (0)
#define NAV_MAP_KEY(_KEY, _NAV_INPUT) do { if (IsKeyDown(io.KeyMap[_KEY])) { io.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; } } while (0)
NAV_MAP_KEY(ImGuiKey_Space, ImGuiNavInput_Activate );
NAV_MAP_KEY(ImGuiKey_Enter, ImGuiNavInput_Input );
NAV_MAP_KEY(ImGuiKey_Escape, ImGuiNavInput_Cancel );
@ -8541,17 +8543,17 @@ static void ImGui::NavUpdate()
NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
NAV_MAP_KEY(ImGuiKey_UpArrow, ImGuiNavInput_KeyUp_ );
NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
if (g.IO.KeyCtrl)
g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
if (g.IO.KeyShift)
g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
if (g.IO.KeyAlt && !g.IO.KeyCtrl) // AltGR is Alt+Ctrl, also even on keyboards without AltGR we don't want Alt+Ctrl to open menu.
g.IO.NavInputs[ImGuiNavInput_KeyMenu_] = 1.0f;
if (io.KeyCtrl)
io.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
if (io.KeyShift)
io.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
if (io.KeyAlt && !io.KeyCtrl) // AltGR is Alt+Ctrl, also even on keyboards without AltGR we don't want Alt+Ctrl to open menu.
io.NavInputs[ImGuiNavInput_KeyMenu_] = 1.0f;
#undef NAV_MAP_KEY
}
memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
memcpy(io.NavInputsDownDurationPrev, io.NavInputsDownDuration, sizeof(io.NavInputsDownDuration));
for (int i = 0; i < IM_ARRAYSIZE(io.NavInputs); i++)
io.NavInputsDownDuration[i] = (io.NavInputs[i] > 0.0f) ? (io.NavInputsDownDuration[i] < 0.0f ? 0.0f : io.NavInputsDownDuration[i] + io.DeltaTime) : -1.0f;
// Process navigation init request (select first/default focus)
// In very rare cases g.NavWindow may be null (e.g. clearing focus after requesting an init request, which does happen when releasing Alt while clicking on void)
@ -8587,12 +8589,12 @@ static void ImGui::NavUpdate()
if (g.NavMousePosDirty && g.NavIdIsAlive)
{
// Set mouse position given our knowledge of the navigated item position from last frame
if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (io.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
{
if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
{
g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
g.IO.WantSetMousePos = true;
io.MousePos = io.MousePosPrev = NavCalcPreferredRefPos();
io.WantSetMousePos = true;
}
}
g.NavMousePosDirty = false;
@ -8611,8 +8613,8 @@ static void ImGui::NavUpdate()
NavUpdateWindowing();
// Set output flags for user application
g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL);
io.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
io.NavVisible = (io.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL);
// Process NavCancel input (to close a popup, get back to parent, clear focus)
if (IsNavInputTest(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
@ -8715,7 +8717,7 @@ static void ImGui::NavUpdate()
if (g.NavMoveDir != ImGuiDir_None)
{
g.NavMoveRequest = true;
g.NavMoveRequestKeyMods = g.IO.KeyMods;
g.NavMoveRequestKeyMods = io.KeyMods;
g.NavMoveDirLast = g.NavMoveDir;
}
if (g.NavMoveRequest && g.NavId == 0)
@ -8733,7 +8735,7 @@ static void ImGui::NavUpdate()
{
// *Fallback* manual-scroll with Nav directional keys when window has no navigable item
ImGuiWindow* window = g.NavWindow;
const float scroll_speed = IM_ROUND(window->CalcFontSize() * 100 * g.IO.DeltaTime); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
const float scroll_speed = IM_ROUND(window->CalcFontSize() * 100 * io.DeltaTime); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
{
if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
@ -8857,24 +8859,26 @@ static void ImGui::NavUpdateMoveResult()
static float ImGui::NavUpdatePageUpPageDown()
{
ImGuiContext& g = *GImGui;
ImGuiIO& io = g.IO;
if (g.NavMoveDir != ImGuiDir_None || g.NavWindow == NULL)
return 0.0f;
if ((g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) || g.NavWindowingTarget != NULL || g.NavLayer != ImGuiNavLayer_Main)
return 0.0f;
ImGuiWindow* window = g.NavWindow;
const bool page_up_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageUp]) && !IsActiveIdUsingKey(ImGuiKey_PageUp);
const bool page_down_held = IsKeyDown(g.IO.KeyMap[ImGuiKey_PageDown]) && !IsActiveIdUsingKey(ImGuiKey_PageDown);
const bool home_pressed = IsKeyPressed(g.IO.KeyMap[ImGuiKey_Home]) && !IsActiveIdUsingKey(ImGuiKey_Home);
const bool end_pressed = IsKeyPressed(g.IO.KeyMap[ImGuiKey_End]) && !IsActiveIdUsingKey(ImGuiKey_End);
const bool page_up_held = IsKeyDown(io.KeyMap[ImGuiKey_PageUp]) && !IsActiveIdUsingKey(ImGuiKey_PageUp);
const bool page_down_held = IsKeyDown(io.KeyMap[ImGuiKey_PageDown]) && !IsActiveIdUsingKey(ImGuiKey_PageDown);
const bool home_pressed = IsKeyPressed(io.KeyMap[ImGuiKey_Home]) && !IsActiveIdUsingKey(ImGuiKey_Home);
const bool end_pressed = IsKeyPressed(io.KeyMap[ImGuiKey_End]) && !IsActiveIdUsingKey(ImGuiKey_End);
if (page_up_held != page_down_held || home_pressed != end_pressed) // If either (not both) are pressed
{
if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll)
{
// Fallback manual-scroll when window has no navigable item
if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
if (IsKeyPressed(io.KeyMap[ImGuiKey_PageUp], true))
SetScrollY(window, window->Scroll.y - window->InnerRect.GetHeight());
else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
else if (IsKeyPressed(io.KeyMap[ImGuiKey_PageDown], true))
SetScrollY(window, window->Scroll.y + window->InnerRect.GetHeight());
else if (home_pressed)
SetScrollY(window, 0.0f);
@ -8886,14 +8890,14 @@ static float ImGui::NavUpdatePageUpPageDown()
ImRect& nav_rect_rel = window->NavRectRel[g.NavLayer];
const float page_offset_y = ImMax(0.0f, window->InnerRect.GetHeight() - window->CalcFontSize() * 1.0f + nav_rect_rel.GetHeight());
float nav_scoring_rect_offset_y = 0.0f;
if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageUp], true))
if (IsKeyPressed(io.KeyMap[ImGuiKey_PageUp], true))
{
nav_scoring_rect_offset_y = -page_offset_y;
g.NavMoveDir = ImGuiDir_Down; // Because our scoring rect is offset up, we request the down direction (so we can always land on the last item)
g.NavMoveClipDir = ImGuiDir_Up;
g.NavMoveRequestFlags = ImGuiNavMoveFlags_AllowCurrentNavId | ImGuiNavMoveFlags_AlsoScoreVisibleSet;
}
else if (IsKeyPressed(g.IO.KeyMap[ImGuiKey_PageDown], true))
else if (IsKeyPressed(io.KeyMap[ImGuiKey_PageDown], true))
{
nav_scoring_rect_offset_y = +page_offset_y;
g.NavMoveDir = ImGuiDir_Up; // Because our scoring rect is offset down, we request the up direction (so we can always land on the last item)