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CollapsingHeader(bool*) variant: fixed for IsItemHovered() to work properly in the nav branch.Basically the close button now has to use ItemAdd() to be navable into, which overwrite the IsItemHovered data. (#600, #787)

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This commit is contained in:
omar 2017-10-18 19:51:32 +02:00
parent a126c702d9
commit 29a652adee
3 changed files with 16 additions and 0 deletions
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3
imgui.cpp
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@ -7346,8 +7346,11 @@ bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags
// Create a small overlapping close button // FIXME: We can evolve this into user accessible helpers to add extra buttons on title bars, headers, etc.
ImGuiContext& g = *GImGui;
float button_sz = g.FontSize * 0.5f;
ImGuiItemHoveredDataBackup last_item_backup;
last_item_backup.Backup();
if (CloseButton(window->GetID((void*)(intptr_t)(id+1)), ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x - button_sz, window->DC.LastItemRect.Min.y + g.Style.FramePadding.y + button_sz), button_sz))
*p_open = false;
last_item_backup.Restore();
}
return is_open;

2
imgui_demo.cpp
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@ -460,11 +460,13 @@ void ImGui::ShowTestWindow(bool* p_open)
ImGui::Checkbox("Enable extra group", &closable_group);
if (ImGui::CollapsingHeader("Header"))
{
ImGui::Text("IsItemHovered: %d", IsItemHovered());
for (int i = 0; i < 5; i++)
ImGui::Text("Some content %d", i);
}
if (ImGui::CollapsingHeader("Header with a close button", &closable_group))
{
ImGui::Text("IsItemHovered: %d", IsItemHovered());
for (int i = 0; i < 5; i++)
ImGui::Text("More content %d", i);
}

11
imgui_internal.h
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@ -848,6 +848,17 @@ public:
ImRect MenuBarRect() const { float y1 = Pos.y + TitleBarHeight(); return ImRect(Pos.x, y1, Pos.x + SizeFull.x, y1 + MenuBarHeight()); }
};
// Backup and restore just enough data to be able to use IsItemHovered() on item A after another B in the same window has overwritten the data.
struct ImGuiItemHoveredDataBackup
{
ImGuiID LastItemId;
ImRect LastItemRect;
bool LastItemRectHoveredRect;
void Backup() { ImGuiWindow* window = GImGui->CurrentWindow; LastItemId = window->DC.LastItemId; LastItemRect = window->DC.LastItemRect; LastItemRectHoveredRect = window->DC.LastItemRectHoveredRect; }
void Restore() { ImGuiWindow* window = GImGui->CurrentWindow; window->DC.LastItemId = LastItemId; window->DC.LastItemRect = LastItemRect; window->DC.LastItemRectHoveredRect = LastItemRectHoveredRect; }
};
//-----------------------------------------------------------------------------
// Internal API
// No guarantee of forward compatibility here.