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Nav: Support for fallback horizontal scrolling with PadLeft/PadRight (nb: fallback scrolling is only used to navigate windows that have no interactive items). (#787)

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omar 2017-09-29 00:01:26 +02:00
parent 30b1d85962
commit f4398226cc
1 changed files with 9 additions and 4 deletions
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11
imgui.cpp
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@ -2802,12 +2802,17 @@ static void NavUpdate()
// Scrolling // Scrolling
if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget) if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
{ {
// Fallback manual-scroll with NavUp/NavDown when window has no navigable item // *Fallback* manual-scroll with NavUp/NavDown when window has no navigable item
const float scroll_speed = ImFloor(g.NavWindow->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported. const float scroll_speed = ImFloor(g.NavWindow->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
if (!g.NavWindow->DC.NavLayerActiveMask && g.NavWindow->DC.NavHasScroll && g.NavMoveRequest && (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)) if (!g.NavWindow->DC.NavLayerActiveMask && g.NavWindow->DC.NavHasScroll && g.NavMoveRequest)
{
if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
SetWindowScrollX(g.NavWindow, ImFloor(g.NavWindow->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
SetWindowScrollY(g.NavWindow, ImFloor(g.NavWindow->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed)); SetWindowScrollY(g.NavWindow, ImFloor(g.NavWindow->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
}
// Manual scroll with NavScrollXXX keys // *Normal* Manual scroll with NavScrollXXX keys
ImVec2 scroll_dir = GetNavInputAmount2d(1, ImGuiNavReadMode_Down, 1.0f/10.0f, 10.0f); ImVec2 scroll_dir = GetNavInputAmount2d(1, ImGuiNavReadMode_Down, 1.0f/10.0f, 10.0f);
if (scroll_dir.x != 0.0f && g.NavWindow->ScrollbarX) if (scroll_dir.x != 0.0f && g.NavWindow->ScrollbarX)
{ {