| 1669 | } |
| 1670 | |
| 1671 | bool ImGui::BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags) |
| 1672 | { |
| 1673 | ImGuiContext& g = *GImGui; |
| 1674 | ImGuiWindow* window = GetCurrentWindow(); |
| 1675 | |
| 1676 | ImGuiNextWindowDataFlags backup_next_window_data_flags = g.NextWindowData.Flags; |
| 1677 | g.NextWindowData.ClearFlags(); // We behave like Begin() and need to consume those values |
| 1678 | if (window->SkipItems) |
| 1679 | return false; |
| 1680 | |
| 1681 | const ImGuiStyle& style = g.Style; |
| 1682 | const ImGuiID id = window->GetID(label); |
| 1683 | IM_ASSERT((flags & (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)) != (ImGuiComboFlags_NoArrowButton | ImGuiComboFlags_NoPreview)); // Can't use both flags together |
| 1684 | |
| 1685 | const float arrow_size = (flags & ImGuiComboFlags_NoArrowButton) ? 0.0f : GetFrameHeight(); |
| 1686 | const ImVec2 label_size = CalcTextSize(label, NULL, true); |
| 1687 | const float w = (flags & ImGuiComboFlags_NoPreview) ? arrow_size : CalcItemWidth(); |
| 1688 | const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y * 2.0f)); |
| 1689 | const ImRect total_bb(bb.Min, bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f)); |
| 1690 | ItemSize(total_bb, style.FramePadding.y); |
| 1691 | if (!ItemAdd(total_bb, id, &bb)) |
| 1692 | return false; |
| 1693 | |
| 1694 | // Open on click |
| 1695 | bool hovered, held; |
| 1696 | bool pressed = ButtonBehavior(bb, id, &hovered, &held); |
| 1697 | const ImGuiID popup_id = ImHashStr("##ComboPopup", 0, id); |
| 1698 | bool popup_open = IsPopupOpen(popup_id, ImGuiPopupFlags_None); |
| 1699 | if (pressed && !popup_open) |
| 1700 | { |
| 1701 | OpenPopupEx(popup_id, ImGuiPopupFlags_None); |
| 1702 | popup_open = true; |
| 1703 | } |
| 1704 | |
| 1705 | // Render shape |
| 1706 | const ImU32 frame_col = GetColorU32(hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg); |
| 1707 | const float value_x2 = ImMax(bb.Min.x, bb.Max.x - arrow_size); |
| 1708 | RenderNavHighlight(bb, id); |
| 1709 | if (!(flags & ImGuiComboFlags_NoPreview)) |
| 1710 | window->DrawList->AddRectFilled(bb.Min, ImVec2(value_x2, bb.Max.y), frame_col, style.FrameRounding, (flags & ImGuiComboFlags_NoArrowButton) ? ImDrawFlags_RoundCornersAll : ImDrawFlags_RoundCornersLeft); |
| 1711 | if (!(flags & ImGuiComboFlags_NoArrowButton)) |
| 1712 | { |
| 1713 | ImU32 bg_col = GetColorU32((popup_open || hovered) ? ImGuiCol_ButtonHovered : ImGuiCol_Button); |
| 1714 | ImU32 text_col = GetColorU32(ImGuiCol_Text); |
| 1715 | window->DrawList->AddRectFilled(ImVec2(value_x2, bb.Min.y), bb.Max, bg_col, style.FrameRounding, (w <= arrow_size) ? ImDrawFlags_RoundCornersAll : ImDrawFlags_RoundCornersRight); |
| 1716 | if (value_x2 + arrow_size - style.FramePadding.x <= bb.Max.x) |
| 1717 | RenderArrow(window->DrawList, ImVec2(value_x2 + style.FramePadding.y, bb.Min.y + style.FramePadding.y), text_col, ImGuiDir_Down, 1.0f); |
| 1718 | } |
| 1719 | RenderFrameBorder(bb.Min, bb.Max, style.FrameRounding); |
| 1720 | |
| 1721 | // Custom preview |
| 1722 | if (flags & ImGuiComboFlags_CustomPreview) |
| 1723 | { |
| 1724 | g.ComboPreviewData.PreviewRect = ImRect(bb.Min.x, bb.Min.y, value_x2, bb.Max.y); |
| 1725 | IM_ASSERT(preview_value == NULL || preview_value[0] == 0); |
| 1726 | preview_value = NULL; |
| 1727 | } |
| 1728 |
nothing calls this directly
no test coverage detected