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Inputs, Scrolling: better selection of scrolling window when hovering nested windows and backend/OS is emitting dual-axis wheeling inputs. (#3795, #4559)

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ocornut
2022-11-30 17:46:57 +01:00
parent a5f3596e6c
commit 87caf27ac4
4 changed files with 95 additions and 34 deletions
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5
imgui_internal.h
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@ -477,6 +477,7 @@ static inline ImVec2 ImRotate(const ImVec2& v, float cos_a, float sin_a)
static inline float ImLinearSweep(float current, float target, float speed) { if (current < target) return ImMin(current + speed, target); if (current > target) return ImMax(current - speed, target); return current; }
static inline ImVec2 ImMul(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); }
static inline bool ImIsFloatAboveGuaranteedIntegerPrecision(float f) { return f <= -16777216 || f >= 16777216; }
static inline float ImExponentialMovingAverage(float avg, float sample, int n) { avg -= avg / n; avg += sample / n; return avg; }
IM_MSVC_RUNTIME_CHECKS_RESTORE
// Helpers: Geometry
@ -1764,7 +1765,10 @@ struct ImGuiContext
ImGuiWindow* MovingWindow; // Track the window we clicked on (in order to preserve focus). The actual window that is moved is generally MovingWindow->RootWindow.
ImGuiWindow* WheelingWindow; // Track the window we started mouse-wheeling on. Until a timer elapse or mouse has moved, generally keep scrolling the same window even if during the course of scrolling the mouse ends up hovering a child window.
ImVec2 WheelingWindowRefMousePos;
int WheelingWindowStartFrame; // This may be set one frame before WheelingWindow is != NULL
float WheelingWindowReleaseTimer;
ImVec2 WheelingWindowWheelRemainder;
ImVec2 WheelingAxisAvg;
// Item/widgets state and tracking information
ImGuiID DebugHookIdInfo; // Will call core hooks: DebugHookIdInfo() from GetID functions, used by Stack Tool [next HoveredId/ActiveId to not pull in an extra cache-line]
@ -2030,6 +2034,7 @@ struct ImGuiContext
HoveredWindowUnderMovingWindow = NULL;
MovingWindow = NULL;
WheelingWindow = NULL;
WheelingWindowStartFrame = -1;
WheelingWindowReleaseTimer = 0.0f;
DebugHookIdInfo = 0;