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Moved implementation of Hovered-related functions next to each others + comments, before I attempt to work on them. No functional change here.

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This commit is contained in:
omar 2017-09-27 16:07:47 +02:00
parent 842e88a8e3
commit e87ad328e4
1 changed files with 25 additions and 23 deletions
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48
imgui.cpp
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@ -1947,11 +1947,13 @@ bool ImGui::ItemAdd(const ImRect& bb, const ImGuiID* id)
return false; return false;
//if (g.IO.KeyAlt) window->DrawList->AddRect(bb.Min, bb.Max, IM_COL32(255,255,0,120)); // [DEBUG] //if (g.IO.KeyAlt) window->DrawList->AddRect(bb.Min, bb.Max, IM_COL32(255,255,0,120)); // [DEBUG]
// Setting LastItemHoveredAndUsable for IsItemHovered(). This is a sensible default, but widgets are free to override it. // Setting LastItemHoveredAndUsable for public facing IsItemHovered(). This is a sensible default, but widgets are free to override it.
// FIXME: Consider moving this code to IsItemHovered() so it's only evaluated if users needs it.
if (IsMouseHoveringRect(bb.Min, bb.Max)) if (IsMouseHoveringRect(bb.Min, bb.Max))
{ {
// Matching the behavior of IsHovered() but allow if ActiveId==window->MoveID (we clicked on the window background) // Matching the behavior of internal IsHovered() but:
// So that clicking on items with no active id such as Text() still returns true with IsItemHovered() // - we are always setting LastItemHoveredRect, which is returned by IsItemRectHovered(), so the order of tests is tweaked to be different.
// - we allow hovering to be true when ActiveId==window->MoveID, so that clicking on non-interactive items such as a Text() item still returns true with IsItemHovered())
window->DC.LastItemHoveredRect = true; window->DC.LastItemHoveredRect = true;
if (g.HoveredRootWindow == window->RootWindow) if (g.HoveredRootWindow == window->RootWindow)
if (g.ActiveId == 0 || (id && g.ActiveId == *id) || g.ActiveIdAllowOverlap || (g.ActiveId == window->MoveId)) if (g.ActiveId == 0 || (id && g.ActiveId == *id) || g.ActiveIdAllowOverlap || (g.ActiveId == window->MoveId))
@ -1962,18 +1964,19 @@ bool ImGui::ItemAdd(const ImRect& bb, const ImGuiID* id)
return true; return true;
} }
bool ImGui::IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when_logged) bool ImGui::IsItemHovered()
{ {
ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindowRead(); ImGuiWindow* window = GetCurrentWindowRead();
if (!bb.Overlaps(window->ClipRect)) return window->DC.LastItemHoveredAndUsable;
if (!id || *id != g.ActiveId)
if (clip_even_when_logged || !g.LogEnabled)
return true;
return false;
} }
// NB: This is an internal helper. The user-facing IsItemHovered() is using data emitted from ItemAdd(), with a slightly different logic. bool ImGui::IsItemRectHovered()
{
ImGuiWindow* window = GetCurrentWindowRead();
return window->DC.LastItemHoveredRect;
}
// [Internal] The user-facing IsItemHovered() is using data emitted from ItemAdd(), with a slightly different logic.
bool ImGui::IsHovered(const ImRect& bb, ImGuiID id, bool flatten_childs) bool ImGui::IsHovered(const ImRect& bb, ImGuiID id, bool flatten_childs)
{ {
ImGuiContext& g = *GImGui; ImGuiContext& g = *GImGui;
@ -1988,6 +1991,17 @@ bool ImGui::IsHovered(const ImRect& bb, ImGuiID id, bool flatten_childs)
return false; return false;
} }
bool ImGui::IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when_logged)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindowRead();
if (!bb.Overlaps(window->ClipRect))
if (!id || *id != g.ActiveId)
if (clip_even_when_logged || !g.LogEnabled)
return true;
return false;
}
bool ImGui::FocusableItemRegister(ImGuiWindow* window, ImGuiID id, bool tab_stop) bool ImGui::FocusableItemRegister(ImGuiWindow* window, ImGuiID id, bool tab_stop)
{ {
ImGuiContext& g = *GImGui; ImGuiContext& g = *GImGui;
@ -3323,18 +3337,6 @@ void ImGui::CaptureMouseFromApp(bool capture)
GImGui->WantCaptureMouseNextFrame = capture ? 1 : 0; GImGui->WantCaptureMouseNextFrame = capture ? 1 : 0;
} }
bool ImGui::IsItemHovered()
{
ImGuiWindow* window = GetCurrentWindowRead();
return window->DC.LastItemHoveredAndUsable;
}
bool ImGui::IsItemRectHovered()
{
ImGuiWindow* window = GetCurrentWindowRead();
return window->DC.LastItemHoveredRect;
}
bool ImGui::IsItemActive() bool ImGui::IsItemActive()
{ {
ImGuiContext& g = *GImGui; ImGuiContext& g = *GImGui;