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Internals: Nav: Extracted code into a NavClampToVisibleAreaForMoveDir() + fix debug code + inline some functions, removed obsolete EndChild() comment.

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This commit is contained in:
omar
2018-05-09 18:59:16 +02:00
parent 39f4761ff7
commit f83f566530
3 changed files with 24 additions and 18 deletions
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38
imgui.cpp
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@ -2169,14 +2169,14 @@ void ImGui::ItemSize(const ImRect& bb, float text_offset_y)
ItemSize(bb.GetSize(), text_offset_y);
}
static ImGuiDir NavScoreItemGetQuadrant(float dx, float dy)
static ImGuiDir inline NavScoreItemGetQuadrant(float dx, float dy)
{
if (fabsf(dx) > fabsf(dy))
return (dx > 0.0f) ? ImGuiDir_Right : ImGuiDir_Left;
return (dy > 0.0f) ? ImGuiDir_Down : ImGuiDir_Up;
}
static float NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
static float inline NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
{
if (a1 < b0)
return a1 - b0;
@ -2185,6 +2185,20 @@ static float NavScoreItemDistInterval(float a0, float a1, float b0, float b1)
return 0.0f;
}
static void inline NavClampRectToVisibleAreaForMoveDir(ImGuiDir move_dir, ImRect& r, const ImRect& clip_rect)
{
if (move_dir == ImGuiDir_Left || move_dir == ImGuiDir_Right)
{
r.Min.y = ImClamp(r.Min.y, clip_rect.Min.y, clip_rect.Max.y);
r.Max.y = ImClamp(r.Max.y, clip_rect.Min.y, clip_rect.Max.y);
}
else
{
r.Min.x = ImClamp(r.Min.x, clip_rect.Min.x, clip_rect.Max.x);
r.Max.x = ImClamp(r.Max.x, clip_rect.Min.x, clip_rect.Max.x);
}
}
// Scoring function for directional navigation. Based on https://gist.github.com/rygorous/6981057
static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
{
@ -2196,17 +2210,9 @@ static bool NavScoreItem(ImGuiNavMoveResult* result, ImRect cand)
const ImRect& curr = g.NavScoringRectScreen; // Current modified source rect (NB: we've applied Max.x = Min.x in NavUpdate() to inhibit the effect of having varied item width)
g.NavScoringCount++;
// We perform scoring on items bounding box clipped by their parent window on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
{
cand.Min.y = ImClamp(cand.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y);
cand.Max.y = ImClamp(cand.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y);
}
else
{
cand.Min.x = ImClamp(cand.Min.x, window->ClipRect.Min.x, window->ClipRect.Max.x);
cand.Max.x = ImClamp(cand.Max.x, window->ClipRect.Min.x, window->ClipRect.Max.x);
}
// We perform scoring on items bounding box clipped by the current clipping rectangle on the other axis (clipping on our movement axis would give us equal scores for all clipped items)
// For example, this ensure that items in one column are not reached when moving vertically from items in another column.
NavClampRectToVisibleAreaForMoveDir(g.NavMoveDir, cand, window->ClipRect);
// Compute distance between boxes
// FIXME-NAV: Introducing biases for vertical navigation, needs to be removed.
@ -2389,6 +2395,7 @@ static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, con
}
// Scoring for navigation
// FIXME-NAV: Consider policy for double scoring (scoring from NavScoringRectScreen + scoring from a rect wrapped according to current wrapping policy)
if (g.NavId != id && !(item_flags & ImGuiItemFlags_NoNav))
{
ImGuiNavMoveResult* result = (window == g.NavWindow) ? &g.NavMoveResultLocal : &g.NavMoveResultOther;
@ -3266,7 +3273,7 @@ static void ImGui::NavUpdate()
g.NavScoringCount = 0;
#if IMGUI_DEBUG_NAV_RECTS
if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredMousePos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
#endif
}
@ -5190,8 +5197,7 @@ void ImGui::EndChild()
}
else
{
// When using auto-filling child window, we don't provide full width/height to ItemSize so that it doesn't feed back into automatic size-fitting.
ImVec2 sz = GetWindowSize();
ImVec2 sz = window->Size;
if (window->AutoFitChildAxises & (1 << ImGuiAxis_X)) // Arbitrary minimum zero-ish child size of 4.0f causes less trouble than a 0.0f
sz.x = ImMax(4.0f, sz.x);
if (window->AutoFitChildAxises & (1 << ImGuiAxis_Y))