Hyprland/src/render/decorations/CHyprGroupBarDecoration.cpp

#include "CHyprGroupBarDecoration.hpp"
#include "../../Compositor.hpp"
#include "../../config/ConfigValue.hpp"
#include "managers/LayoutManager.hpp"
#include <ranges>
#include <pango/pangocairo.h>

// shared things to conserve VRAM
static SP<CTexture> m_tGradientActive         = makeShared<CTexture>();
static SP<CTexture> m_tGradientInactive       = makeShared<CTexture>();
static SP<CTexture> m_tGradientLockedActive   = makeShared<CTexture>();
static SP<CTexture> m_tGradientLockedInactive = makeShared<CTexture>();

constexpr int       BAR_INDICATOR_HEIGHT   = 3;
constexpr int       BAR_PADDING_OUTER_VERT = 2;
constexpr int       BAR_PADDING_OUTER_HORZ = 2;
constexpr int       BAR_TEXT_PAD           = 2;
constexpr int       BAR_HORIZONTAL_PADDING = 2;

CHyprGroupBarDecoration::CHyprGroupBarDecoration(PHLWINDOW pWindow) : IHyprWindowDecoration(pWindow) {
    static auto PGRADIENTS = CConfigValue<Hyprlang::INT>("group:groupbar:enabled");
    static auto PENABLED   = CConfigValue<Hyprlang::INT>("group:groupbar:gradients");
    m_pWindow              = pWindow;

    if (m_tGradientActive->m_iTexID == 0 && *PENABLED && *PGRADIENTS)
        refreshGroupBarGradients();
}

CHyprGroupBarDecoration::~CHyprGroupBarDecoration() {}

SDecorationPositioningInfo CHyprGroupBarDecoration::getPositioningInfo() {
    static auto                PHEIGHT       = CConfigValue<Hyprlang::INT>("group:groupbar:height");
    static auto                PENABLED      = CConfigValue<Hyprlang::INT>("group:groupbar:enabled");
    static auto                PRENDERTITLES = CConfigValue<Hyprlang::INT>("group:groupbar:render_titles");
    static auto                PGRADIENTS    = CConfigValue<Hyprlang::INT>("group:groupbar:gradients");
    static auto                PPRIORITY     = CConfigValue<Hyprlang::INT>("group:groupbar:priority");
    static auto                PSTACKED      = CConfigValue<Hyprlang::INT>("group:groupbar:stacked");

    SDecorationPositioningInfo info;
    info.policy   = DECORATION_POSITION_STICKY;
    info.edges    = DECORATION_EDGE_TOP;
    info.priority = *PPRIORITY;
    info.reserved = true;

    if (*PENABLED && m_pWindow->m_sWindowData.decorate.valueOrDefault()) {
        if (*PSTACKED) {
            const auto ONEBARHEIGHT = BAR_PADDING_OUTER_VERT + BAR_INDICATOR_HEIGHT + (*PGRADIENTS || *PRENDERTITLES ? *PHEIGHT : 0);
            info.desiredExtents     = {{0, (ONEBARHEIGHT * m_dwGroupMembers.size()) + 2 + BAR_PADDING_OUTER_VERT}, {0, 0}};
        } else
            info.desiredExtents = {{0, BAR_PADDING_OUTER_VERT * 2 + BAR_INDICATOR_HEIGHT + (*PGRADIENTS || *PRENDERTITLES ? *PHEIGHT : 0) + 2}, {0, 0}};
    } else
        info.desiredExtents = {{0, 0}, {0, 0}};
    return info;
}

void CHyprGroupBarDecoration::onPositioningReply(const SDecorationPositioningReply& reply) {
    m_bAssignedBox = reply.assignedGeometry;
    g_pLayoutManager->getCurrentLayout()->recalculateWindow(m_pWindow.lock());
}

eDecorationType CHyprGroupBarDecoration::getDecorationType() {
    return DECORATION_GROUPBAR;
}

//

void CHyprGroupBarDecoration::updateWindow(PHLWINDOW pWindow) {
    if (m_pWindow->m_sGroupData.pNextWindow.expired()) {
        m_pWindow->removeWindowDeco(this);
        return;
    }

    m_dwGroupMembers.clear();
    PHLWINDOW head = pWindow->getGroupHead();
    m_dwGroupMembers.push_back(head);

    PHLWINDOW curr = head->m_sGroupData.pNextWindow.lock();
    while (curr != head) {
        m_dwGroupMembers.push_back(curr);
        curr = curr->m_sGroupData.pNextWindow.lock();
    }

    damageEntire();

    if (m_dwGroupMembers.size() == 0) {
        m_pWindow->removeWindowDeco(this);
        return;
    }
}

void CHyprGroupBarDecoration::damageEntire() {
    auto box = assignedBoxGlobal();
    box.translate(m_pWindow->m_vFloatingOffset);
    g_pHyprRenderer->damageBox(&box);
}

void CHyprGroupBarDecoration::draw(CMonitor* pMonitor, float a) {
    // get how many bars we will draw
    int         barsToDraw = m_dwGroupMembers.size();

    static auto PENABLED       = CConfigValue<Hyprlang::INT>("group:groupbar:enabled");
    static auto PRENDERTITLES  = CConfigValue<Hyprlang::INT>("group:groupbar:render_titles");
    static auto PTITLEFONTSIZE = CConfigValue<Hyprlang::INT>("group:groupbar:font_size");
    static auto PHEIGHT        = CConfigValue<Hyprlang::INT>("group:groupbar:height");
    static auto PGRADIENTS     = CConfigValue<Hyprlang::INT>("group:groupbar:gradients");
    static auto PSTACKED       = CConfigValue<Hyprlang::INT>("group:groupbar:stacked");

    if (!*PENABLED || !m_pWindow->m_sWindowData.decorate.valueOrDefault())
        return;

    const auto ASSIGNEDBOX = assignedBoxGlobal();

    const auto ONEBARHEIGHT = BAR_PADDING_OUTER_VERT + BAR_INDICATOR_HEIGHT + (*PGRADIENTS || *PRENDERTITLES ? *PHEIGHT : 0);
    m_fBarWidth             = *PSTACKED ? ASSIGNEDBOX.w : (ASSIGNEDBOX.w - BAR_HORIZONTAL_PADDING * (barsToDraw - 1)) / barsToDraw;
    m_fBarHeight = *PSTACKED ? ((ASSIGNEDBOX.h - 2 - BAR_PADDING_OUTER_VERT) - BAR_PADDING_OUTER_VERT * (barsToDraw)) / barsToDraw : ASSIGNEDBOX.h - BAR_PADDING_OUTER_VERT;

    const auto DESIREDHEIGHT = *PSTACKED ? (ONEBARHEIGHT * m_dwGroupMembers.size()) + 2 + BAR_PADDING_OUTER_VERT : BAR_PADDING_OUTER_VERT * 2 + ONEBARHEIGHT;
    if (DESIREDHEIGHT != ASSIGNEDBOX.h) {
        g_pDecorationPositioner->repositionDeco(this);
    }

    float xoff = 0;
    float yoff = 0;

    for (int i = 0; i < barsToDraw; ++i) {
        const auto WINDOWINDEX = *PSTACKED ? m_dwGroupMembers.size() - i - 1 : i;

        CBox       rect = {ASSIGNEDBOX.x + floor(xoff) - pMonitor->vecPosition.x + m_pWindow->m_vFloatingOffset.x,
                           ASSIGNEDBOX.y + ASSIGNEDBOX.h - floor(yoff) - BAR_INDICATOR_HEIGHT - BAR_PADDING_OUTER_VERT - pMonitor->vecPosition.y + m_pWindow->m_vFloatingOffset.y,
                           m_fBarWidth, BAR_INDICATOR_HEIGHT};

        if (rect.width <= 0 || rect.height <= 0)
            break;

        rect.scale(pMonitor->scale);

        static auto       PGROUPCOLACTIVE         = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.active");
        static auto       PGROUPCOLINACTIVE       = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.inactive");
        static auto       PGROUPCOLACTIVELOCKED   = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.locked_active");
        static auto       PGROUPCOLINACTIVELOCKED = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.locked_inactive");
        auto* const       GROUPCOLACTIVE          = (CGradientValueData*)(PGROUPCOLACTIVE.ptr())->getData();
        auto* const       GROUPCOLINACTIVE        = (CGradientValueData*)(PGROUPCOLINACTIVE.ptr())->getData();
        auto* const       GROUPCOLACTIVELOCKED    = (CGradientValueData*)(PGROUPCOLACTIVELOCKED.ptr())->getData();
        auto* const       GROUPCOLINACTIVELOCKED  = (CGradientValueData*)(PGROUPCOLINACTIVELOCKED.ptr())->getData();

        const bool        GROUPLOCKED  = m_pWindow->getGroupHead()->m_sGroupData.locked;
        const auto* const PCOLACTIVE   = GROUPLOCKED ? GROUPCOLACTIVELOCKED : GROUPCOLACTIVE;
        const auto* const PCOLINACTIVE = GROUPLOCKED ? GROUPCOLINACTIVELOCKED : GROUPCOLINACTIVE;

        CColor            color = m_dwGroupMembers[WINDOWINDEX].lock() == g_pCompositor->m_pLastWindow.lock() ? PCOLACTIVE->m_vColors[0] : PCOLINACTIVE->m_vColors[0];
        color.a *= a;
        g_pHyprOpenGL->renderRect(&rect, color);

        rect = {ASSIGNEDBOX.x + floor(xoff) - pMonitor->vecPosition.x + m_pWindow->m_vFloatingOffset.x,
                ASSIGNEDBOX.y + ASSIGNEDBOX.h - floor(yoff) - ONEBARHEIGHT - pMonitor->vecPosition.y + m_pWindow->m_vFloatingOffset.y, m_fBarWidth,
                (*PGRADIENTS || *PRENDERTITLES ? *PHEIGHT : 0)};
        rect.scale(pMonitor->scale);

        if (*PGRADIENTS) {
            const auto GRADIENTTEX = (m_dwGroupMembers[WINDOWINDEX] == g_pCompositor->m_pLastWindow ? (GROUPLOCKED ? m_tGradientLockedActive : m_tGradientActive) :
                                                                                                      (GROUPLOCKED ? m_tGradientLockedInactive : m_tGradientInactive));
            if (GRADIENTTEX->m_iTexID != 0)
                g_pHyprOpenGL->renderTexture(GRADIENTTEX, &rect, 1.0);
        }

        if (*PRENDERTITLES) {
            CTitleTex* pTitleTex = textureFromTitle(m_dwGroupMembers[WINDOWINDEX]->m_szTitle);

            if (!pTitleTex)
                pTitleTex =
                    m_sTitleTexs.titleTexs
                        .emplace_back(std::make_unique<CTitleTex>(m_dwGroupMembers[WINDOWINDEX].lock(),
                                                                  Vector2D{m_fBarWidth * pMonitor->scale, (*PTITLEFONTSIZE + 2 * BAR_TEXT_PAD) * pMonitor->scale}, pMonitor->scale))
                        .get();
            rect.y += (rect.height - pTitleTex->textHeight) / 2.0;
            rect.height = pTitleTex->textHeight;
            rect.width  = pTitleTex->textWidth;
            rect.x += (m_fBarWidth * pMonitor->scale) / 2.0 - (pTitleTex->textWidth / 2.0);
            rect.round();

            g_pHyprOpenGL->renderTexture(pTitleTex->tex, &rect, 1.f);
        }

        if (*PSTACKED)
            yoff += ONEBARHEIGHT;
        else
            xoff += BAR_HORIZONTAL_PADDING + m_fBarWidth;
    }

    if (*PRENDERTITLES)
        invalidateTextures();
}

CTitleTex* CHyprGroupBarDecoration::textureFromTitle(const std::string& title) {
    for (auto& tex : m_sTitleTexs.titleTexs) {
        if (tex->szContent == title)
            return tex.get();
    }

    return nullptr;
}

void CHyprGroupBarDecoration::invalidateTextures() {
    m_sTitleTexs.titleTexs.clear();
}

CTitleTex::CTitleTex(PHLWINDOW pWindow, const Vector2D& bufferSize, const float monitorScale) {
    tex                        = makeShared<CTexture>();
    szContent                  = pWindow->m_szTitle;
    pWindowOwner               = pWindow;
    const auto   LAYOUTSURFACE = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 0, 0);
    const auto   LAYOUTCAIRO   = cairo_create(LAYOUTSURFACE);

    static auto  FALLBACKFONT     = CConfigValue<std::string>("misc:font_family");
    static auto  PTITLEFONTFAMILY = CConfigValue<std::string>("group:groupbar:font_family");
    static auto  PTITLEFONTSIZE   = CConfigValue<Hyprlang::INT>("group:groupbar:font_size");
    static auto  PTEXTCOLOR       = CConfigValue<Hyprlang::INT>("group:groupbar:text_color");

    const CColor COLOR      = CColor(*PTEXTCOLOR);
    const auto   FONTFAMILY = *PTITLEFONTFAMILY != STRVAL_EMPTY ? *PTITLEFONTFAMILY : *FALLBACKFONT;

    cairo_surface_destroy(LAYOUTSURFACE);

    // draw title using Pango
    PangoLayout* layout = pango_cairo_create_layout(LAYOUTCAIRO);
    pango_layout_set_alignment(layout, PANGO_ALIGN_LEFT);
    pango_layout_set_text(layout, szContent.c_str(), -1);

    PangoFontDescription* fontDesc = pango_font_description_new();
    pango_font_description_set_family_static(fontDesc, FONTFAMILY.c_str());
    pango_font_description_set_size(fontDesc, *PTITLEFONTSIZE * PANGO_SCALE * monitorScale);
    pango_layout_set_font_description(layout, fontDesc);
    pango_font_description_free(fontDesc);

    const int maxWidth = bufferSize.x;

    pango_layout_set_width(layout, maxWidth * PANGO_SCALE);
    pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);

    int            layoutWidth, layoutHeight;
    PangoRectangle inkRect;
    PangoRectangle logicalRect;
    pango_layout_get_pixel_extents(layout, &inkRect, &logicalRect);
    layoutWidth  = inkRect.width;
    layoutHeight = inkRect.height;

    const auto CAIROSURFACE = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, layoutWidth, layoutHeight);
    const auto CAIRO        = cairo_create(CAIROSURFACE);

    // clear the pixmap
    cairo_save(CAIRO);
    cairo_set_operator(CAIRO, CAIRO_OPERATOR_CLEAR);
    cairo_paint(CAIRO);
    cairo_restore(CAIRO);
    cairo_move_to(CAIRO, -inkRect.x, -inkRect.y);
    cairo_set_source_rgba(CAIRO, COLOR.r, COLOR.g, COLOR.b, COLOR.a);
    pango_cairo_show_layout(CAIRO, layout);

    g_object_unref(layout);

    cairo_surface_flush(CAIROSURFACE);

    // copy the data to an OpenGL texture we have
    const auto DATA = cairo_image_surface_get_data(CAIROSURFACE);
    tex->allocate();
    glBindTexture(GL_TEXTURE_2D, tex->m_iTexID);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

#ifndef GLES2
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_BLUE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
#endif

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, layoutWidth, layoutHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, DATA);

    // delete cairo
    textWidth  = layoutWidth;
    textHeight = layoutHeight;
    cairo_destroy(LAYOUTCAIRO);
    cairo_destroy(CAIRO);
    cairo_surface_destroy(CAIROSURFACE);
}

CTitleTex::~CTitleTex() {
    tex->destroyTexture();
}

void renderGradientTo(SP<CTexture> tex, CGradientValueData* grad) {

    if (!g_pCompositor->m_pLastMonitor)
        return;

    const Vector2D& bufferSize = g_pCompositor->m_pLastMonitor->vecPixelSize;

    const auto      CAIROSURFACE = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, bufferSize.x, bufferSize.y);
    const auto      CAIRO        = cairo_create(CAIROSURFACE);

    // clear the pixmap
    cairo_save(CAIRO);
    cairo_set_operator(CAIRO, CAIRO_OPERATOR_CLEAR);
    cairo_paint(CAIRO);
    cairo_restore(CAIRO);

    cairo_pattern_t* pattern;
    pattern = cairo_pattern_create_linear(0, 0, 0, bufferSize.y);

    for (unsigned long i = 0; i < grad->m_vColors.size(); i++) {
        cairo_pattern_add_color_stop_rgba(pattern, 1 - (double)(i + 1) / (grad->m_vColors.size() + 1), grad->m_vColors[i].r, grad->m_vColors[i].g, grad->m_vColors[i].b,
                                          grad->m_vColors[i].a);
    }

    cairo_rectangle(CAIRO, 0, 0, bufferSize.x, bufferSize.y);
    cairo_set_source(CAIRO, pattern);
    cairo_fill(CAIRO);
    cairo_pattern_destroy(pattern);

    cairo_surface_flush(CAIROSURFACE);

    // copy the data to an OpenGL texture we have
    const auto DATA = cairo_image_surface_get_data(CAIROSURFACE);
    tex->allocate();
    glBindTexture(GL_TEXTURE_2D, tex->m_iTexID);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

#ifndef GLES2
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_BLUE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
#endif

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bufferSize.x, bufferSize.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, DATA);

    // delete cairo
    cairo_destroy(CAIRO);
    cairo_surface_destroy(CAIROSURFACE);
}

void refreshGroupBarGradients() {
    static auto PGRADIENTS = CConfigValue<Hyprlang::INT>("group:groupbar:enabled");
    static auto PENABLED   = CConfigValue<Hyprlang::INT>("group:groupbar:gradients");

    static auto PGROUPCOLACTIVE         = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.active");
    static auto PGROUPCOLINACTIVE       = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.inactive");
    static auto PGROUPCOLACTIVELOCKED   = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.locked_active");
    static auto PGROUPCOLINACTIVELOCKED = CConfigValue<Hyprlang::CUSTOMTYPE>("group:groupbar:col.locked_inactive");
    auto* const GROUPCOLACTIVE          = (CGradientValueData*)(PGROUPCOLACTIVE.ptr())->getData();
    auto* const GROUPCOLINACTIVE        = (CGradientValueData*)(PGROUPCOLINACTIVE.ptr())->getData();
    auto* const GROUPCOLACTIVELOCKED    = (CGradientValueData*)(PGROUPCOLACTIVELOCKED.ptr())->getData();
    auto* const GROUPCOLINACTIVELOCKED  = (CGradientValueData*)(PGROUPCOLINACTIVELOCKED.ptr())->getData();

    g_pHyprRenderer->makeEGLCurrent();

    if (m_tGradientActive->m_iTexID != 0) {
        m_tGradientActive->destroyTexture();
        m_tGradientInactive->destroyTexture();
        m_tGradientLockedActive->destroyTexture();
        m_tGradientLockedInactive->destroyTexture();
    }

    if (!*PENABLED || !*PGRADIENTS)
        return;

    renderGradientTo(m_tGradientActive, GROUPCOLACTIVE);
    renderGradientTo(m_tGradientInactive, GROUPCOLINACTIVE);
    renderGradientTo(m_tGradientLockedActive, GROUPCOLACTIVELOCKED);
    renderGradientTo(m_tGradientLockedInactive, GROUPCOLINACTIVELOCKED);
}

bool CHyprGroupBarDecoration::onBeginWindowDragOnDeco(const Vector2D& pos) {
    static auto PSTACKED = CConfigValue<Hyprlang::INT>("group:groupbar:stacked");
    if (m_pWindow.lock() == m_pWindow->m_sGroupData.pNextWindow.lock())
        return false;

    const float BARRELATIVEX = pos.x - assignedBoxGlobal().x;
    const float BARRELATIVEY = pos.y - assignedBoxGlobal().y;
    const int   WINDOWINDEX  = *PSTACKED ? (BARRELATIVEY / (m_fBarHeight + BAR_PADDING_OUTER_VERT)) : (BARRELATIVEX) / (m_fBarWidth + BAR_HORIZONTAL_PADDING);

    if (!*PSTACKED && (BARRELATIVEX - (m_fBarWidth + BAR_HORIZONTAL_PADDING) * WINDOWINDEX > m_fBarWidth))
        return false;

    if (*PSTACKED && (BARRELATIVEY - (m_fBarHeight + BAR_PADDING_OUTER_VERT) * WINDOWINDEX < BAR_PADDING_OUTER_VERT))
        return false;

    PHLWINDOW pWindow = m_pWindow->getGroupWindowByIndex(WINDOWINDEX);

    // hack
    g_pLayoutManager->getCurrentLayout()->onWindowRemoved(pWindow);
    if (!pWindow->m_bIsFloating) {
        const bool GROUPSLOCKEDPREV        = g_pKeybindManager->m_bGroupsLocked;
        g_pKeybindManager->m_bGroupsLocked = true;
        g_pLayoutManager->getCurrentLayout()->onWindowCreated(pWindow);
        g_pKeybindManager->m_bGroupsLocked = GROUPSLOCKEDPREV;
    }

    g_pInputManager->currentlyDraggedWindow = pWindow;

    if (!g_pCompositor->isWindowActive(pWindow))
        g_pCompositor->focusWindow(pWindow);

    return true;
}

bool CHyprGroupBarDecoration::onEndWindowDragOnDeco(const Vector2D& pos, PHLWINDOW pDraggedWindow) {
    static auto PSTACKED = CConfigValue<Hyprlang::INT>("group:groupbar:stacked");
    if (!pDraggedWindow->canBeGroupedInto(m_pWindow.lock()))
        return false;

    const float BARRELATIVE = *PSTACKED ? pos.y - assignedBoxGlobal().y - (m_fBarHeight + BAR_PADDING_OUTER_VERT) / 2 : pos.x - assignedBoxGlobal().x - m_fBarWidth / 2;
    const float BARSIZE     = *PSTACKED ? m_fBarHeight + BAR_PADDING_OUTER_VERT : m_fBarWidth + BAR_HORIZONTAL_PADDING;
    const int   WINDOWINDEX = BARRELATIVE < 0 ? -1 : BARRELATIVE / BARSIZE;

    PHLWINDOW   pWindowInsertAfter = m_pWindow->getGroupWindowByIndex(WINDOWINDEX);
    PHLWINDOW   pWindowInsertEnd   = pWindowInsertAfter->m_sGroupData.pNextWindow.lock();
    PHLWINDOW   pDraggedHead       = pDraggedWindow->m_sGroupData.pNextWindow.lock() ? pDraggedWindow->getGroupHead() : pDraggedWindow;

    if (!pDraggedWindow->m_sGroupData.pNextWindow.expired()) {

        // stores group data
        std::vector<PHLWINDOW> members;
        PHLWINDOW              curr      = pDraggedHead;
        const bool             WASLOCKED = pDraggedHead->m_sGroupData.locked;
        do {
            members.push_back(curr);
            curr = curr->m_sGroupData.pNextWindow.lock();
        } while (curr != members[0]);

        // removes all windows
        for (PHLWINDOW w : members) {
            w->m_sGroupData.pNextWindow.reset();
            w->m_sGroupData.head   = false;
            w->m_sGroupData.locked = false;
            g_pLayoutManager->getCurrentLayout()->onWindowRemoved(w);
        }

        // restores the group
        for (auto it = members.begin(); it != members.end(); ++it) {
            if (std::next(it) != members.end())
                (*it)->m_sGroupData.pNextWindow = *std::next(it);
            else
                (*it)->m_sGroupData.pNextWindow = members[0];
        }
        members[0]->m_sGroupData.head   = true;
        members[0]->m_sGroupData.locked = WASLOCKED;
    } else {
        g_pLayoutManager->getCurrentLayout()->onWindowRemoved(pDraggedWindow);
    }

    pWindowInsertAfter->insertWindowToGroup(pDraggedWindow);

    if (WINDOWINDEX == -1)
        std::swap(pDraggedHead->m_sGroupData.head, pWindowInsertEnd->m_sGroupData.head);

    m_pWindow->setGroupCurrent(pDraggedWindow);
    pDraggedWindow->applyGroupRules();
    pDraggedWindow->updateWindowDecos();
    g_pLayoutManager->getCurrentLayout()->recalculateWindow(pDraggedWindow);

    if (!pDraggedWindow->getDecorationByType(DECORATION_GROUPBAR))
        pDraggedWindow->addWindowDeco(std::make_unique<CHyprGroupBarDecoration>(pDraggedWindow));

    return true;
}

bool CHyprGroupBarDecoration::onMouseButtonOnDeco(const Vector2D& pos, const IPointer::SButtonEvent& e) {
    static auto PSTACKED = CConfigValue<Hyprlang::INT>("group:groupbar:stacked");
    if (m_pWindow->isEffectiveInternalFSMode(FSMODE_FULLSCREEN))
        return true;

    const float BARRELATIVEX = pos.x - assignedBoxGlobal().x;
    const float BARRELATIVEY = pos.y - assignedBoxGlobal().y;
    const int   WINDOWINDEX  = *PSTACKED ? (BARRELATIVEY / (m_fBarHeight + BAR_PADDING_OUTER_VERT)) : (BARRELATIVEX) / (m_fBarWidth + BAR_HORIZONTAL_PADDING);
    static auto PFOLLOWMOUSE = CConfigValue<Hyprlang::INT>("input:follow_mouse");

    // close window on middle click
    if (e.button == 274) {
        static Vector2D pressedCursorPos;

        if (e.state == WL_POINTER_BUTTON_STATE_PRESSED)
            pressedCursorPos = pos;
        else if (e.state == WL_POINTER_BUTTON_STATE_RELEASED && pressedCursorPos == pos)
            g_pXWaylandManager->sendCloseWindow(m_pWindow->getGroupWindowByIndex(WINDOWINDEX));

        return true;
    }

    if (e.state != WL_POINTER_BUTTON_STATE_PRESSED)
        return true;

    // click on padding
    const auto TABPAD   = !*PSTACKED && (BARRELATIVEX - (m_fBarWidth + BAR_HORIZONTAL_PADDING) * WINDOWINDEX > m_fBarWidth);
    const auto STACKPAD = *PSTACKED && (BARRELATIVEY - (m_fBarHeight + BAR_PADDING_OUTER_VERT) * WINDOWINDEX < BAR_PADDING_OUTER_VERT);
    if (TABPAD || STACKPAD) {
        if (!g_pCompositor->isWindowActive(m_pWindow.lock()))
            g_pCompositor->focusWindow(m_pWindow.lock());
        return true;
    }

    PHLWINDOW pWindow = m_pWindow->getGroupWindowByIndex(WINDOWINDEX);

    if (pWindow != m_pWindow)
        pWindow->setGroupCurrent(pWindow);

    if (!g_pCompositor->isWindowActive(pWindow) && *PFOLLOWMOUSE != 3)
        g_pCompositor->focusWindow(pWindow);

    if (pWindow->m_bIsFloating)
        g_pCompositor->changeWindowZOrder(pWindow, 1);

    return true;
}

bool CHyprGroupBarDecoration::onScrollOnDeco(const Vector2D& pos, const IPointer::SAxisEvent e) {
    static auto PGROUPBARSCROLLING = CConfigValue<Hyprlang::INT>("group:groupbar:scrolling");

    if (!*PGROUPBARSCROLLING || m_pWindow->m_sGroupData.pNextWindow.expired())
        return false;

    if (e.delta > 0)
        m_pWindow->setGroupCurrent(m_pWindow->m_sGroupData.pNextWindow.lock());
    else
        m_pWindow->setGroupCurrent(m_pWindow->getGroupPrevious());

    return true;
}

bool CHyprGroupBarDecoration::onInputOnDeco(const eInputType type, const Vector2D& mouseCoords, std::any data) {
    switch (type) {
        case INPUT_TYPE_AXIS: return onScrollOnDeco(mouseCoords, std::any_cast<const IPointer::SAxisEvent>(data));
        case INPUT_TYPE_BUTTON: return onMouseButtonOnDeco(mouseCoords, std::any_cast<const IPointer::SButtonEvent&>(data));
        case INPUT_TYPE_DRAG_START: return onBeginWindowDragOnDeco(mouseCoords);
        case INPUT_TYPE_DRAG_END: return onEndWindowDragOnDeco(mouseCoords, std::any_cast<PHLWINDOW>(data));
        default: return false;
    }
}

eDecorationLayer CHyprGroupBarDecoration::getDecorationLayer() {
    return DECORATION_LAYER_OVER;
}

uint64_t CHyprGroupBarDecoration::getDecorationFlags() {
    return DECORATION_ALLOWS_MOUSE_INPUT;
}

std::string CHyprGroupBarDecoration::getDisplayName() {
    return "GroupBar";
}

CBox CHyprGroupBarDecoration::assignedBoxGlobal() {
    CBox box = m_bAssignedBox;
    box.translate(g_pDecorationPositioner->getEdgeDefinedPoint(DECORATION_EDGE_TOP, m_pWindow.lock()));

    const auto PWORKSPACE = m_pWindow->m_pWorkspace;

    if (PWORKSPACE && !m_pWindow->m_bPinned)
        box.translate(PWORKSPACE->m_vRenderOffset.value());

    return box;
}