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b15c2bfff6941bd2072eade13177433d7ab58a00
hyprland/src/managers/CursorManager.cpp
Vaxry b15c2bfff6 CursorManager: Store cursor pixel data retrieved from X/HC as a copy (#9986) 
Instead of storing pointers as refs (which could randomly get invalid very easily) copy the data.
2025-04-07 21:08:16 +02:00

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#include "CursorManager.hpp"
#include "Compositor.hpp"
#include "../config/ConfigValue.hpp"
#include "PointerManager.hpp"
#include "../xwayland/XWayland.hpp"
#include "../managers/HookSystemManager.hpp"
static int cursorAnimTimer(SP<CEventLoopTimer> self, void* data) {
const auto cursorMgr = reinterpret_cast<CCursorManager*>(data);
cursorMgr->tickAnimatedCursor();
return 1;
}
static void hcLogger(enum eHyprcursorLogLevel level, char* message) {
if (level == HC_LOG_TRACE)
return;
Debug::log(NONE, "[hc] {}", message);
}
CCursorBuffer::CCursorBuffer(cairo_surface_t* surf, const Vector2D& size_, const Vector2D& hot_) : m_hotspot(hot_), m_stride(cairo_image_surface_get_stride(surf)) {
size = size_;
m_data = std::vector<uint8_t>((uint8_t*)cairo_image_surface_get_data(surf), ((uint8_t*)cairo_image_surface_get_data(surf)) + (cairo_image_surface_get_height(surf) * m_stride));
}
CCursorBuffer::CCursorBuffer(const uint8_t* pixelData, const Vector2D& size_, const Vector2D& hot_) : m_hotspot(hot_), m_stride(4 * size_.x) {
size = size_;
m_data = std::vector<uint8_t>(pixelData, pixelData + ((int)size_.y * m_stride));
}
Aquamarine::eBufferCapability CCursorBuffer::caps() {
return Aquamarine::eBufferCapability::BUFFER_CAPABILITY_DATAPTR;
}
Aquamarine::eBufferType CCursorBuffer::type() {
return Aquamarine::eBufferType::BUFFER_TYPE_SHM;
}
void CCursorBuffer::update(const Hyprutils::Math::CRegion& damage) {
;
}
bool CCursorBuffer::isSynchronous() {
return true;
}
bool CCursorBuffer::good() {
return true;
}
Aquamarine::SSHMAttrs CCursorBuffer::shm() {
Aquamarine::SSHMAttrs attrs;
attrs.success = true;
attrs.format = DRM_FORMAT_ARGB8888;
attrs.size = size;
attrs.stride = m_stride;
return attrs;
}
std::tuple<uint8_t*, uint32_t, size_t> CCursorBuffer::beginDataPtr(uint32_t flags) {
return {m_data.data(), DRM_FORMAT_ARGB8888, m_stride};
}
void CCursorBuffer::endDataPtr() {
;
}
CCursorManager::CCursorManager() {
m_pHyprcursor = makeUnique<Hyprcursor::CHyprcursorManager>(m_szTheme.empty() ? nullptr : m_szTheme.c_str(), hcLogger);
m_pXcursor = makeUnique<CXCursorManager>();
static auto PUSEHYPRCURSOR = CConfigValue<Hyprlang::INT>("cursor:enable_hyprcursor");
if (m_pHyprcursor->valid() && *PUSEHYPRCURSOR) {
// find default size. First, HYPRCURSOR_SIZE then default to 24
auto const* SIZE = getenv("HYPRCURSOR_SIZE");
if (SIZE) {
try {
m_iSize = std::stoi(SIZE);
} catch (...) { ; }
}
if (m_iSize <= 0) {
Debug::log(WARN, "HYPRCURSOR_SIZE size not set, defaulting to size 24");
m_iSize = 24;
}
} else {
Debug::log(ERR, "Hyprcursor failed loading theme \"{}\", falling back to Xcursor.", m_szTheme);
auto const* SIZE = getenv("XCURSOR_SIZE");
if (SIZE) {
try {
m_iSize = std::stoi(SIZE);
} catch (...) { ; }
}
if (m_iSize <= 0) {
Debug::log(WARN, "XCURSOR_SIZE size not set, defaulting to size 24");
m_iSize = 24;
}
}
// since we fallback to xcursor always load it on startup. otherwise we end up with a empty theme if hyprcursor is enabled in the config
// and then later is disabled.
m_pXcursor->loadTheme(getenv("XCURSOR_THEME") ? getenv("XCURSOR_THEME") : "default", m_iSize, m_fCursorScale);
m_pAnimationTimer = makeShared<CEventLoopTimer>(std::nullopt, cursorAnimTimer, this);
g_pEventLoopManager->addTimer(m_pAnimationTimer);
updateTheme();
static auto P = g_pHookSystem->hookDynamic("monitorLayoutChanged", [this](void* self, SCallbackInfo& info, std::any param) { this->updateTheme(); });
}
CCursorManager::~CCursorManager() {
if (m_pAnimationTimer && g_pEventLoopManager) {
g_pEventLoopManager->removeTimer(m_pAnimationTimer);
m_pAnimationTimer.reset();
}
if (m_pHyprcursor->valid() && m_sCurrentStyleInfo.size > 0)
m_pHyprcursor->cursorSurfaceStyleDone(m_sCurrentStyleInfo);
}
SP<Aquamarine::IBuffer> CCursorManager::getCursorBuffer() {
return !m_vCursorBuffers.empty() ? m_vCursorBuffers.back() : nullptr;
}
void CCursorManager::setCursorSurface(SP<CWLSurface> surf, const Vector2D& hotspot) {
if (!surf || !surf->resource())
g_pPointerManager->resetCursorImage();
else
g_pPointerManager->setCursorSurface(surf, hotspot);
m_bOurBufferConnected = false;
}
void CCursorManager::setCursorBuffer(SP<CCursorBuffer> buf, const Vector2D& hotspot, const float& scale) {
m_vCursorBuffers.emplace_back(buf);
g_pPointerManager->setCursorBuffer(getCursorBuffer(), hotspot, scale);
if (m_vCursorBuffers.size() > 1)
std::erase_if(m_vCursorBuffers, [this](const auto& buf) { return buf.get() == m_vCursorBuffers.front().get(); });
m_bOurBufferConnected = true;
}
void CCursorManager::setAnimationTimer(const int& frame, const int& delay) {
if (delay > 0) {
// arm
m_pAnimationTimer->updateTimeout(std::chrono::milliseconds(delay));
} else {
// disarm
m_pAnimationTimer->updateTimeout(std::nullopt);
}
m_iCurrentAnimationFrame = frame;
}
void CCursorManager::setCursorFromName(const std::string& name) {
static auto PUSEHYPRCURSOR = CConfigValue<Hyprlang::INT>("cursor:enable_hyprcursor");
auto setXCursor = [this](auto const& name) {
float scale = std::ceil(m_fCursorScale);
auto xcursor = m_pXcursor->getShape(name, m_iSize, m_fCursorScale);
auto& icon = xcursor->images.front();
auto buf = makeShared<CCursorBuffer>((uint8_t*)icon.pixels.data(), icon.size, icon.hotspot);
setCursorBuffer(buf, icon.hotspot / scale, scale);
m_currentXcursor = xcursor;
int delay = 0;
int frame = 0;
if (m_currentXcursor->images.size() > 1)
delay = m_currentXcursor->images[frame].delay;
setAnimationTimer(frame, delay);
};
auto setHyprCursor = [this](auto const& name) {
m_sCurrentCursorShapeData = m_pHyprcursor->getShape(name.c_str(), m_sCurrentStyleInfo);
if (m_sCurrentCursorShapeData.images.size() < 1) {
// try with '_' first (old hc, etc)
std::string newName = name;
std::replace(newName.begin(), newName.end(), '-', '_');
m_sCurrentCursorShapeData = m_pHyprcursor->getShape(newName.c_str(), m_sCurrentStyleInfo);
}
if (m_sCurrentCursorShapeData.images.size() < 1) {
// fallback to a default if available
constexpr const std::array<const char*, 3> fallbackShapes = {"default", "left_ptr", "left-ptr"};
for (auto const& s : fallbackShapes) {
m_sCurrentCursorShapeData = m_pHyprcursor->getShape(s, m_sCurrentStyleInfo);
if (m_sCurrentCursorShapeData.images.size() > 0)
break;
}
if (m_sCurrentCursorShapeData.images.size() < 1) {
Debug::log(ERR, "BUG THIS: No fallback found for a cursor in setCursorFromName");
return false;
}
}
auto buf =
makeShared<CCursorBuffer>(m_sCurrentCursorShapeData.images[0].surface, Vector2D{m_sCurrentCursorShapeData.images[0].size, m_sCurrentCursorShapeData.images[0].size},
Vector2D{m_sCurrentCursorShapeData.images[0].hotspotX, m_sCurrentCursorShapeData.images[0].hotspotY});
auto hotspot = Vector2D{m_sCurrentCursorShapeData.images[0].hotspotX, m_sCurrentCursorShapeData.images[0].hotspotY} / m_fCursorScale;
setCursorBuffer(buf, hotspot, m_fCursorScale);
int delay = 0;
int frame = 0;
if (m_sCurrentCursorShapeData.images.size() > 1)
delay = m_sCurrentCursorShapeData.images[frame].delay;
setAnimationTimer(frame, delay);
return true;
};
if (!m_pHyprcursor->valid() || !*PUSEHYPRCURSOR || !setHyprCursor(name))
setXCursor(name);
}
void CCursorManager::tickAnimatedCursor() {
if (!m_bOurBufferConnected)
return;
if (!m_pHyprcursor->valid() && m_currentXcursor->images.size() > 1) {
m_iCurrentAnimationFrame++;
if ((size_t)m_iCurrentAnimationFrame >= m_currentXcursor->images.size())
m_iCurrentAnimationFrame = 0;
float scale = std::ceil(m_fCursorScale);
auto& icon = m_currentXcursor->images.at(m_iCurrentAnimationFrame);
auto buf = makeShared<CCursorBuffer>((uint8_t*)icon.pixels.data(), icon.size, icon.hotspot);
setCursorBuffer(buf, icon.hotspot / scale, scale);
setAnimationTimer(m_iCurrentAnimationFrame, m_currentXcursor->images[m_iCurrentAnimationFrame].delay);
} else if (m_sCurrentCursorShapeData.images.size() > 1) {
m_iCurrentAnimationFrame++;
if ((size_t)m_iCurrentAnimationFrame >= m_sCurrentCursorShapeData.images.size())
m_iCurrentAnimationFrame = 0;
auto hotspot =
Vector2D{m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].hotspotX, m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].hotspotY} / m_fCursorScale;
auto buf = makeShared<CCursorBuffer>(
m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].surface,
Vector2D{m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].size, m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].size},
Vector2D{m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].hotspotX, m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].hotspotY});
setCursorBuffer(buf, hotspot, m_fCursorScale);
setAnimationTimer(m_iCurrentAnimationFrame, m_sCurrentCursorShapeData.images[m_iCurrentAnimationFrame].delay);
}
}
SCursorImageData CCursorManager::dataFor(const std::string& name) {
if (!m_pHyprcursor->valid())
return {};
const auto IMAGES = m_pHyprcursor->getShape(name.c_str(), m_sCurrentStyleInfo);
if (IMAGES.images.empty())
return {};
return IMAGES.images[0];
}
void CCursorManager::setXWaylandCursor() {
static auto PUSEHYPRCURSOR = CConfigValue<Hyprlang::INT>("cursor:enable_hyprcursor");
const auto CURSOR = dataFor("left_ptr");
if (CURSOR.surface && *PUSEHYPRCURSOR)
g_pXWayland->setCursor(cairo_image_surface_get_data(CURSOR.surface), cairo_image_surface_get_stride(CURSOR.surface), {CURSOR.size, CURSOR.size},
{CURSOR.hotspotX, CURSOR.hotspotY});
else {
auto xcursor = m_pXcursor->getShape("left_ptr", m_iSize, 1);
auto& icon = xcursor->images.front();
g_pXWayland->setCursor((uint8_t*)icon.pixels.data(), icon.size.x * 4, icon.size, icon.hotspot);
}
}
void CCursorManager::updateTheme() {
static auto PUSEHYPRCURSOR = CConfigValue<Hyprlang::INT>("cursor:enable_hyprcursor");
float highestScale = 1.0;
for (auto const& m : g_pCompositor->m_vMonitors) {
if (m->scale > highestScale)
highestScale = m->scale;
}
m_fCursorScale = highestScale;
if (*PUSEHYPRCURSOR) {
if (m_sCurrentStyleInfo.size > 0 && m_pHyprcursor->valid())
m_pHyprcursor->cursorSurfaceStyleDone(m_sCurrentStyleInfo);
m_sCurrentStyleInfo.size = std::round(m_iSize * highestScale);
if (m_pHyprcursor->valid())
m_pHyprcursor->loadThemeStyle(m_sCurrentStyleInfo);
}
for (auto const& m : g_pCompositor->m_vMonitors) {
m->forceFullFrames = 5;
g_pCompositor->scheduleFrameForMonitor(m, Aquamarine::IOutput::AQ_SCHEDULE_CURSOR_SHAPE);
}
}
bool CCursorManager::changeTheme(const std::string& name, const int size) {
static auto PUSEHYPRCURSOR = CConfigValue<Hyprlang::INT>("cursor:enable_hyprcursor");
m_szTheme = name.empty() ? "" : name;
m_iSize = size <= 0 ? 24 : size;
auto xcursor_theme = getenv("XCURSOR_THEME") ? getenv("XCURSOR_THEME") : "default";
if (*PUSEHYPRCURSOR) {
auto options = Hyprcursor::SManagerOptions();
options.logFn = hcLogger;
options.allowDefaultFallback = false;
m_szTheme = name.empty() ? "" : name;
m_iSize = size;
m_pHyprcursor = makeUnique<Hyprcursor::CHyprcursorManager>(m_szTheme.empty() ? nullptr : m_szTheme.c_str(), options);
if (!m_pHyprcursor->valid()) {
Debug::log(ERR, "Hyprcursor failed loading theme \"{}\", falling back to XCursor.", m_szTheme);
m_pXcursor->loadTheme(m_szTheme.empty() ? xcursor_theme : m_szTheme, m_iSize, m_fCursorScale);
}
} else
m_pXcursor->loadTheme(m_szTheme.empty() ? xcursor_theme : m_szTheme, m_iSize, m_fCursorScale);
updateTheme();
return true;
}
void CCursorManager::syncGsettings() {
m_pXcursor->syncGsettings();
}
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