// themes/OldBook.h — Old Book (sepia) inspired ImGui theme (header-only) #pragma once #include "ThemeHelpers.h" // Expects to be included from GUITheme.h after and RGBA() helper // Light variant (existing) static inline void ApplyOldBookLightTheme() { // Sepia old paper aesthetic (light) const ImVec4 bg0 = RGBA(0xF5E6C8); // paper const ImVec4 bg1 = RGBA(0xEAD9B8); const ImVec4 bg2 = RGBA(0xDECBA6); const ImVec4 bg3 = RGBA(0xCDBA96); const ImVec4 ink = RGBA(0x3B2F2F); // dark brown ink const ImVec4 inkSoft = RGBA(0x5A4540); // Accents: muted teal/red/blue like aged inks const ImVec4 teal = RGBA(0x3F7F7A); const ImVec4 red = RGBA(0xA65858); const ImVec4 blue = RGBA(0x4F6D8C); const ImVec4 yellow = RGBA(0xB58B00); ImGuiStyle &style = ImGui::GetStyle(); style.WindowPadding = ImVec2(8.0f, 8.0f); style.FramePadding = ImVec2(6.0f, 4.0f); style.CellPadding = ImVec2(6.0f, 4.0f); style.ItemSpacing = ImVec2(6.0f, 6.0f); style.ItemInnerSpacing = ImVec2(6.0f, 4.0f); style.ScrollbarSize = 14.0f; style.GrabMinSize = 10.0f; style.WindowRounding = 4.0f; style.FrameRounding = 3.0f; style.PopupRounding = 4.0f; style.GrabRounding = 3.0f; style.TabRounding = 4.0f; style.WindowBorderSize = 1.0f; style.FrameBorderSize = 1.0f; ImVec4 *colors = style.Colors; colors[ImGuiCol_Text] = ink; colors[ImGuiCol_TextDisabled] = ImVec4(ink.x, ink.y, ink.z, 0.55f); colors[ImGuiCol_WindowBg] = bg0; colors[ImGuiCol_ChildBg] = bg0; colors[ImGuiCol_PopupBg] = ImVec4(bg1.x, bg1.y, bg1.z, 0.98f); colors[ImGuiCol_Border] = bg2; colors[ImGuiCol_BorderShadow] = RGBA(0x000000, 0.0f); colors[ImGuiCol_FrameBg] = bg2; colors[ImGuiCol_FrameBgHovered] = bg3; colors[ImGuiCol_FrameBgActive] = bg1; colors[ImGuiCol_TitleBg] = bg1; colors[ImGuiCol_TitleBgActive] = bg2; colors[ImGuiCol_TitleBgCollapsed] = bg1; colors[ImGuiCol_MenuBarBg] = bg1; colors[ImGuiCol_ScrollbarBg] = bg0; colors[ImGuiCol_ScrollbarGrab] = bg3; colors[ImGuiCol_ScrollbarGrabHovered] = bg2; colors[ImGuiCol_ScrollbarGrabActive] = bg1; colors[ImGuiCol_CheckMark] = teal; colors[ImGuiCol_SliderGrab] = teal; colors[ImGuiCol_SliderGrabActive] = blue; colors[ImGuiCol_Button] = bg3; colors[ImGuiCol_ButtonHovered] = bg2; colors[ImGuiCol_ButtonActive] = bg1; colors[ImGuiCol_Header] = bg3; colors[ImGuiCol_HeaderHovered] = bg2; colors[ImGuiCol_HeaderActive] = bg2; colors[ImGuiCol_Separator] = bg2; colors[ImGuiCol_SeparatorHovered] = bg1; colors[ImGuiCol_SeparatorActive] = teal; colors[ImGuiCol_ResizeGrip] = ImVec4(inkSoft.x, inkSoft.y, inkSoft.z, 0.12f); colors[ImGuiCol_ResizeGripHovered] = ImVec4(teal.x, teal.y, teal.z, 0.67f); colors[ImGuiCol_ResizeGripActive] = blue; colors[ImGuiCol_Tab] = bg2; colors[ImGuiCol_TabHovered] = bg1; colors[ImGuiCol_TabActive] = bg3; colors[ImGuiCol_TabUnfocused] = bg2; colors[ImGuiCol_TabUnfocusedActive] = bg3; colors[ImGuiCol_TableHeaderBg] = bg2; colors[ImGuiCol_TableBorderStrong] = bg1; colors[ImGuiCol_TableBorderLight] = ImVec4(bg1.x, bg1.y, bg1.z, 0.6f); colors[ImGuiCol_TableRowBg] = ImVec4(bg1.x, bg1.y, bg1.z, 0.2f); colors[ImGuiCol_TableRowBgAlt] = ImVec4(bg1.x, bg1.y, bg1.z, 0.35f); colors[ImGuiCol_TextSelectedBg] = ImVec4(red.x, red.y, red.z, 0.25f); colors[ImGuiCol_DragDropTarget] = red; colors[ImGuiCol_NavHighlight] = red; colors[ImGuiCol_NavWindowingHighlight] = ImVec4(inkSoft.x, inkSoft.y, inkSoft.z, 0.70f); colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.0f, 0.0f, 0.0f, 0.15f); colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.0f, 0.0f, 0.0f, 0.15f); colors[ImGuiCol_PlotLines] = teal; colors[ImGuiCol_PlotLinesHovered] = blue; colors[ImGuiCol_PlotHistogram] = yellow; colors[ImGuiCol_PlotHistogramHovered] = red; } // Dark variant (new) static inline void ApplyOldBookDarkTheme() { // Old Book 8 (vim-oldbook8) — exact dark palette mapping // Source: oldbook8.vim (background=dark) const ImVec4 bg0 = RGBA(0x3C4855); // Normal guibg const ImVec4 bg1 = RGBA(0x445160); // Fold/Pmenu bg const ImVec4 bg2 = RGBA(0x626C77); // StatusLine/MatchParen bg const ImVec4 bg3 = RGBA(0x85939B); // Delimiter (used as a lighter hover tier) const ImVec4 fg0 = RGBA(0xD5D4D2); // Normal guifg const ImVec4 fg1 = RGBA(0x626C77); // Comment/secondary text const ImVec4 fg2 = RGBA(0xA5A6A4); // Type/Function (used for active controls) // Accents from scheme const ImVec4 yellow = RGBA(0xDDD668); // Search const ImVec4 yellow2 = RGBA(0xD5BC02); // IncSearch const ImVec4 cyan = RGBA(0x87D7FF); // Visual selection const ImVec4 green = RGBA(0x5BB899); // DiffAdd const ImVec4 red = RGBA(0xDB6C6C); // Error/DiffDelete ImGuiStyle &style = ImGui::GetStyle(); style.WindowPadding = ImVec2(8.0f, 8.0f); style.FramePadding = ImVec2(6.0f, 4.0f); style.CellPadding = ImVec2(6.0f, 4.0f); style.ItemSpacing = ImVec2(6.0f, 6.0f); style.ItemInnerSpacing = ImVec2(6.0f, 4.0f); style.ScrollbarSize = 14.0f; style.GrabMinSize = 10.0f; style.WindowRounding = 4.0f; style.FrameRounding = 3.0f; style.PopupRounding = 4.0f; style.GrabRounding = 3.0f; style.TabRounding = 4.0f; style.WindowBorderSize = 1.0f; style.FrameBorderSize = 1.0f; ImVec4 *colors = style.Colors; colors[ImGuiCol_Text] = fg0; colors[ImGuiCol_TextDisabled] = fg1; colors[ImGuiCol_WindowBg] = bg0; colors[ImGuiCol_ChildBg] = bg0; colors[ImGuiCol_PopupBg] = ImVec4(bg1.x, bg1.y, bg1.z, 0.98f); colors[ImGuiCol_Border] = bg2; colors[ImGuiCol_BorderShadow] = RGBA(0x000000, 0.0f); colors[ImGuiCol_FrameBg] = bg1; colors[ImGuiCol_FrameBgHovered] = bg2; colors[ImGuiCol_FrameBgActive] = fg2; colors[ImGuiCol_TitleBg] = bg1; colors[ImGuiCol_TitleBgActive] = bg2; colors[ImGuiCol_TitleBgCollapsed] = bg1; colors[ImGuiCol_MenuBarBg] = bg1; colors[ImGuiCol_ScrollbarBg] = bg0; colors[ImGuiCol_ScrollbarGrab] = bg2; colors[ImGuiCol_ScrollbarGrabHovered] = bg3; colors[ImGuiCol_ScrollbarGrabActive] = fg2; colors[ImGuiCol_CheckMark] = yellow; colors[ImGuiCol_SliderGrab] = yellow; colors[ImGuiCol_SliderGrabActive] = cyan; colors[ImGuiCol_Button] = bg2; colors[ImGuiCol_ButtonHovered] = bg3; colors[ImGuiCol_ButtonActive] = fg2; colors[ImGuiCol_Header] = bg2; colors[ImGuiCol_HeaderHovered] = bg3; colors[ImGuiCol_HeaderActive] = bg3; colors[ImGuiCol_Separator] = bg2; colors[ImGuiCol_SeparatorHovered] = yellow; colors[ImGuiCol_SeparatorActive] = yellow2; colors[ImGuiCol_ResizeGrip] = ImVec4(fg1.x, fg1.y, fg1.z, 0.12f); colors[ImGuiCol_ResizeGripHovered] = ImVec4(cyan.x, cyan.y, cyan.z, 0.67f); colors[ImGuiCol_ResizeGripActive] = cyan; colors[ImGuiCol_Tab] = bg1; colors[ImGuiCol_TabHovered] = bg2; colors[ImGuiCol_TabActive] = bg2; colors[ImGuiCol_TabUnfocused] = bg1; colors[ImGuiCol_TabUnfocusedActive] = bg2; colors[ImGuiCol_TableHeaderBg] = bg2; colors[ImGuiCol_TableBorderStrong] = bg1; colors[ImGuiCol_TableBorderLight] = ImVec4(bg1.x, bg1.y, bg1.z, 0.6f); colors[ImGuiCol_TableRowBg] = ImVec4(bg1.x, bg1.y, bg1.z, 0.2f); colors[ImGuiCol_TableRowBgAlt] = ImVec4(bg1.x, bg1.y, bg1.z, 0.35f); colors[ImGuiCol_TextSelectedBg] = ImVec4(cyan.x, cyan.y, cyan.z, 0.28f); colors[ImGuiCol_DragDropTarget] = yellow; colors[ImGuiCol_NavHighlight] = yellow; colors[ImGuiCol_NavWindowingHighlight] = ImVec4(fg1.x, fg1.y, fg1.z, 0.70f); colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.0f, 0.0f, 0.0f, 0.35f); colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.0f, 0.0f, 0.0f, 0.35f); colors[ImGuiCol_PlotLines] = green; colors[ImGuiCol_PlotLinesHovered] = cyan; colors[ImGuiCol_PlotHistogram] = yellow; colors[ImGuiCol_PlotHistogramHovered] = red; } static void ApplyOldBookTheme() { // Back-compat: keep calling light by default; GUITheme dispatches variants ApplyOldBookLightTheme(); }