mirror of
https://github.com/hyprwm/hyprcursor.git
synced 2024-12-22 18:29:48 +01:00
627 lines
No EOL
20 KiB
C++
627 lines
No EOL
20 KiB
C++
#include "hyprcursor/hyprcursor.hpp"
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#include "internalSharedTypes.hpp"
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#include "internalDefines.hpp"
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#include <array>
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#include <filesystem>
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#include <hyprlang.hpp>
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#include <zip.h>
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#include <cstring>
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#include <algorithm>
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#include <librsvg/rsvg.h>
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#include "Log.hpp"
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using namespace Hyprcursor;
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// directories for lookup
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constexpr const std::array<const char*, 1> systemThemeDirs = {"/usr/share/icons"};
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constexpr const std::array<const char*, 2> userThemeDirs = {"/.local/share/icons", "/.icons"};
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//
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static std::string themeNameFromEnv() {
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const auto ENV = getenv("HYPRCURSOR_THEME");
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if (!ENV)
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return "";
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return std::string{ENV};
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}
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static std::string getFirstTheme() {
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// try user directories first
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const auto HOMEENV = getenv("HOME");
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if (!HOMEENV)
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return "";
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const std::string HOME{HOMEENV};
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for (auto& dir : userThemeDirs) {
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const auto FULLPATH = HOME + dir;
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if (!std::filesystem::exists(FULLPATH))
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continue;
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// loop over dirs and see if any has a manifest.hl
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for (auto& themeDir : std::filesystem::directory_iterator(FULLPATH)) {
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if (!themeDir.is_directory())
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continue;
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const auto MANIFESTPATH = themeDir.path().string() + "/manifest.hl";
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if (std::filesystem::exists(MANIFESTPATH))
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return themeDir.path().stem().string();
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}
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}
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for (auto& dir : systemThemeDirs) {
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const auto FULLPATH = dir;
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if (!std::filesystem::exists(FULLPATH))
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continue;
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// loop over dirs and see if any has a manifest.hl
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for (auto& themeDir : std::filesystem::directory_iterator(FULLPATH)) {
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if (!themeDir.is_directory())
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continue;
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const auto MANIFESTPATH = themeDir.path().string() + "/manifest.hl";
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if (std::filesystem::exists(MANIFESTPATH))
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return themeDir.path().stem().string();
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}
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}
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return "";
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}
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static std::string getFullPathForThemeName(const std::string& name) {
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const auto HOMEENV = getenv("HOME");
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if (!HOMEENV)
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return "";
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const std::string HOME{HOMEENV};
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for (auto& dir : userThemeDirs) {
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const auto FULLPATH = HOME + dir;
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if (!std::filesystem::exists(FULLPATH))
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continue;
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// loop over dirs and see if any has a manifest.hl
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for (auto& themeDir : std::filesystem::directory_iterator(FULLPATH)) {
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if (!themeDir.is_directory())
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continue;
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if (!name.empty() && themeDir.path().stem().string() != name)
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continue;
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const auto MANIFESTPATH = themeDir.path().string() + "/manifest.hl";
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if (std::filesystem::exists(MANIFESTPATH))
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return std::filesystem::canonical(themeDir.path()).string();
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}
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}
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for (auto& dir : systemThemeDirs) {
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const auto FULLPATH = dir;
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if (!std::filesystem::exists(FULLPATH))
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continue;
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// loop over dirs and see if any has a manifest.hl
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for (auto& themeDir : std::filesystem::directory_iterator(FULLPATH)) {
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if (!themeDir.is_directory())
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continue;
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if (!name.empty() && themeDir.path().stem().string() != name)
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continue;
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const auto MANIFESTPATH = themeDir.path().string() + "/manifest.hl";
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if (std::filesystem::exists(MANIFESTPATH))
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return std::filesystem::canonical(themeDir.path()).string();
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}
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}
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if (!name.empty()) // try without name
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return getFullPathForThemeName("");
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return "";
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}
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CHyprcursorManager::CHyprcursorManager(const char* themeName_) {
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std::string themeName = themeName_ ? themeName_ : "";
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if (themeName.empty()) {
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// try reading from env
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themeName = themeNameFromEnv();
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}
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if (themeName.empty()) {
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// try finding first, in the hierarchy
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themeName = getFirstTheme();
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}
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if (themeName.empty()) {
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// holy shit we're done
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return;
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}
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// initialize theme
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impl = new CHyprcursorImplementation;
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impl->themeName = themeName;
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impl->themeFullDir = getFullPathForThemeName(themeName);
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if (impl->themeFullDir.empty())
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return;
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Debug::log(LOG, "Found theme {} at {}\n", impl->themeName, impl->themeFullDir);
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const auto LOADSTATUS = impl->loadTheme();
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if (LOADSTATUS.has_value()) {
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Debug::log(ERR, "Theme failed to load with {}\n", LOADSTATUS.value());
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return;
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}
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finalizedAndValid = true;
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}
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CHyprcursorManager::~CHyprcursorManager() {
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if (impl)
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delete impl;
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}
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bool CHyprcursorManager::valid() {
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return finalizedAndValid;
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}
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SCursorImageData** CHyprcursorManager::getShapesC(int& outSize, const char* shape_, const SCursorStyleInfo& info) {
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std::string REQUESTEDSHAPE = shape_;
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std::vector<SLoadedCursorImage*> resultingImages;
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float hotX = 0, hotY = 0;
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for (auto& shape : impl->theme.shapes) {
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if (REQUESTEDSHAPE != shape->directory && std::find(shape->overrides.begin(), shape->overrides.end(), REQUESTEDSHAPE) == shape->overrides.end())
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continue;
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hotX = shape->hotspotX;
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hotY = shape->hotspotY;
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// matched :)
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bool foundAny = false;
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for (auto& image : impl->loadedShapes[shape.get()].images) {
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if (image->side != info.size || (!image->artificial && shape->shapeType == SHAPE_SVG))
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continue;
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// found size
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resultingImages.push_back(image.get());
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foundAny = true;
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}
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if (foundAny || shape->shapeType == SHAPE_SVG /* something broke, this shouldn't happen with svg */)
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break;
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// if we get here, means loadThemeStyle wasn't called most likely. If resize algo is specified, this is an error.
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if (shape->resizeAlgo != RESIZE_NONE) {
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Debug::log(ERR, "getSurfaceFor didn't match a size?");
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return nullptr;
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}
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// find nearest
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int leader = 13371337;
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for (auto& image : impl->loadedShapes[shape.get()].images) {
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if (std::abs((int)(image->side - info.size)) > leader)
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continue;
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leader = image->side;
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}
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if (leader == 13371337) { // ???
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Debug::log(ERR, "getSurfaceFor didn't match any nearest size?");
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return nullptr;
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}
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// we found nearest size
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for (auto& image : impl->loadedShapes[shape.get()].images) {
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if (image->side != leader)
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continue;
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// found size
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resultingImages.push_back(image.get());
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foundAny = true;
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}
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if (foundAny)
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break;
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Debug::log(ERR, "getSurfaceFor didn't match any nearest size (2)?");
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return nullptr;
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}
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// alloc and return what we need
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SCursorImageData** data = (SCursorImageData**)malloc(sizeof(SCursorImageData*) * resultingImages.size());
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for (size_t i = 0; i < resultingImages.size(); ++i) {
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data[i] = (SCursorImageData*)malloc(sizeof(SCursorImageData));
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data[i]->delay = resultingImages[i]->delay;
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data[i]->size = resultingImages[i]->side;
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data[i]->surface = resultingImages[i]->cairoSurface;
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data[i]->hotspotX = hotX * data[i]->size;
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data[i]->hotspotY = hotY * data[i]->size;
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}
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outSize = resultingImages.size();
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return data;
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}
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bool CHyprcursorManager::loadThemeStyle(const SCursorStyleInfo& info) {
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for (auto& shape : impl->theme.shapes) {
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if (shape->resizeAlgo == RESIZE_NONE && shape->shapeType != SHAPE_SVG)
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continue; // don't resample NONE style cursors
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bool sizeFound = false;
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if (shape->shapeType == SHAPE_PNG) {
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for (auto& image : impl->loadedShapes[shape.get()].images) {
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if (image->side != info.size)
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continue;
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sizeFound = true;
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break;
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}
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if (sizeFound)
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continue;
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}
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// size wasn't found, let's resample.
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// if svg, render.
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if (shape->shapeType == SHAPE_PNG) {
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SLoadedCursorImage* leader = nullptr;
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int leaderVal = 1000000;
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for (auto& image : impl->loadedShapes[shape.get()].images) {
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if (image->side < info.size)
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continue;
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if (image->side > leaderVal)
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continue;
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leaderVal = image->side;
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leader = image.get();
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}
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if (!leader) {
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for (auto& image : impl->loadedShapes[shape.get()].images) {
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if (std::abs((int)(image->side - info.size)) > leaderVal)
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continue;
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leaderVal = image->side;
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leader = image.get();
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}
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}
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if (!leader) {
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Debug::log(ERR, "Resampling failed to find a candidate???");
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return false;
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}
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auto& newImage = impl->loadedShapes[shape.get()].images.emplace_back(std::make_unique<SLoadedCursorImage>());
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newImage->artificial = true;
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newImage->side = info.size;
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newImage->artificialData = new char[info.size * info.size * 4];
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newImage->cairoSurface = cairo_image_surface_create_for_data((unsigned char*)newImage->artificialData, CAIRO_FORMAT_ARGB32, info.size, info.size, info.size * 4);
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const auto PCAIRO = cairo_create(newImage->cairoSurface);
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cairo_set_antialias(PCAIRO, shape->resizeAlgo == RESIZE_BILINEAR ? CAIRO_ANTIALIAS_GOOD : CAIRO_ANTIALIAS_NONE);
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cairo_save(PCAIRO);
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cairo_set_operator(PCAIRO, CAIRO_OPERATOR_CLEAR);
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cairo_paint(PCAIRO);
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cairo_restore(PCAIRO);
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const auto PTN = cairo_pattern_create_for_surface(leader->cairoSurface);
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cairo_pattern_set_extend(PTN, CAIRO_EXTEND_NONE);
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const float scale = info.size / (float)leader->side;
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cairo_scale(PCAIRO, scale, scale);
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cairo_pattern_set_filter(PTN, shape->resizeAlgo == RESIZE_BILINEAR ? CAIRO_FILTER_GOOD : CAIRO_FILTER_NEAREST);
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cairo_set_source(PCAIRO, PTN);
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cairo_rectangle(PCAIRO, 0, 0, info.size, info.size);
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cairo_fill(PCAIRO);
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cairo_surface_flush(newImage->cairoSurface);
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cairo_pattern_destroy(PTN);
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cairo_destroy(PCAIRO);
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} else if (shape->shapeType == SHAPE_SVG) {
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const auto ORIGINALSVG = impl->loadedShapes[shape.get()].images[0].get();
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auto& newImage = impl->loadedShapes[shape.get()].images.emplace_back(std::make_unique<SLoadedCursorImage>());
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newImage->artificial = true;
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newImage->side = info.size;
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newImage->artificialData = new char[info.size * info.size * 4];
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newImage->cairoSurface = cairo_image_surface_create_for_data((unsigned char*)newImage->artificialData, CAIRO_FORMAT_ARGB32, info.size, info.size, info.size * 4);
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const auto PCAIRO = cairo_create(newImage->cairoSurface);
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cairo_save(PCAIRO);
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cairo_set_operator(PCAIRO, CAIRO_OPERATOR_CLEAR);
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cairo_paint(PCAIRO);
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cairo_restore(PCAIRO);
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GError* error = nullptr;
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RsvgHandle* handle = rsvg_handle_new_from_data((unsigned char*)ORIGINALSVG->data, ORIGINALSVG->dataLen, &error);
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if (!handle) {
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Debug::log(ERR, "Failed reading svg: {}", error->message);
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return false;
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}
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RsvgRectangle rect = {0, 0, (double)info.size, (double)info.size};
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if (!rsvg_handle_render_document(handle, PCAIRO, &rect, &error)) {
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Debug::log(ERR, "Failed rendering svg: {}", error->message);
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return false;
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}
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// done
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cairo_surface_flush(newImage->cairoSurface);
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cairo_destroy(PCAIRO);
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} else {
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Debug::log(ERR, "Invalid shapetype in loadThemeStyle");
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return false;
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}
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}
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return true;
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}
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void CHyprcursorManager::cursorSurfaceStyleDone(const SCursorStyleInfo& info) {
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for (auto& shape : impl->theme.shapes) {
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if (shape->resizeAlgo == RESIZE_NONE)
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continue;
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std::erase_if(impl->loadedShapes[shape.get()].images, [info](const auto& e) { return !e->artificial && (info.size == 0 || e->side == info.size); });
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}
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}
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/*
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Implementation
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*/
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static std::string removeBeginEndSpacesTabs(std::string str) {
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if (str.empty())
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return str;
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int countBefore = 0;
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while (str[countBefore] == ' ' || str[countBefore] == '\t') {
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countBefore++;
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}
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int countAfter = 0;
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while ((int)str.length() - countAfter - 1 >= 0 && (str[str.length() - countAfter - 1] == ' ' || str[str.length() - 1 - countAfter] == '\t')) {
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countAfter++;
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}
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str = str.substr(countBefore, str.length() - countBefore - countAfter);
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return str;
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}
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SCursorTheme* currentTheme;
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static Hyprlang::CParseResult parseDefineSize(const char* C, const char* V) {
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Hyprlang::CParseResult result;
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const std::string VALUE = V;
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if (!VALUE.contains(",")) {
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result.setError("Invalid define_size");
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return result;
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}
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auto LHS = removeBeginEndSpacesTabs(VALUE.substr(0, VALUE.find_first_of(",")));
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auto RHS = removeBeginEndSpacesTabs(VALUE.substr(VALUE.find_first_of(",") + 1));
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auto DELAY = 0;
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SCursorImage image;
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if (RHS.contains(",")) {
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const auto LL = removeBeginEndSpacesTabs(RHS.substr(0, RHS.find(",")));
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const auto RR = removeBeginEndSpacesTabs(RHS.substr(RHS.find(",") + 1));
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try {
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image.delay = std::stoull(RR);
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} catch (std::exception& e) {
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result.setError(e.what());
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return result;
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}
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RHS = LL;
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}
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image.filename = RHS;
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try {
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image.size = std::stoull(LHS);
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} catch (std::exception& e) {
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result.setError(e.what());
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return result;
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}
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currentTheme->shapes.back()->images.push_back(image);
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return result;
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}
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static Hyprlang::CParseResult parseOverride(const char* C, const char* V) {
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Hyprlang::CParseResult result;
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const std::string VALUE = V;
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currentTheme->shapes.back()->overrides.push_back(V);
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return result;
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}
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/*
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PNG reading
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*/
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static cairo_status_t readPNG(void* data, unsigned char* output, unsigned int len) {
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const auto DATA = (SLoadedCursorImage*)data;
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if (!DATA->data)
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return CAIRO_STATUS_READ_ERROR;
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size_t toRead = len > DATA->dataLen - DATA->readNeedle ? DATA->dataLen - DATA->readNeedle : len;
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std::memcpy(output, DATA->data + DATA->readNeedle, toRead);
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DATA->readNeedle += toRead;
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if (DATA->readNeedle >= DATA->dataLen) {
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delete[] (char*)DATA->data;
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DATA->data = nullptr;
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Debug::log(TRACE, "cairo: png read, freeing mem");
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}
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return CAIRO_STATUS_SUCCESS;
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}
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/*
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General
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*/
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std::optional<std::string> CHyprcursorImplementation::loadTheme() {
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currentTheme = &theme;
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// load manifest
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std::unique_ptr<Hyprlang::CConfig> manifest;
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try {
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// TODO: unify this between util and lib
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manifest = std::make_unique<Hyprlang::CConfig>((themeFullDir + "/manifest.hl").c_str(), Hyprlang::SConfigOptions{});
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manifest->addConfigValue("cursors_directory", Hyprlang::STRING{""});
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manifest->commence();
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manifest->parse();
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} catch (const char* err) {
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Debug::log(ERR, "Failed parsing manifest due to {}", err);
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return std::string{"failed: "} + err;
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}
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const std::string CURSORSSUBDIR = std::any_cast<Hyprlang::STRING>(manifest->getConfigValue("cursors_directory"));
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const std::string CURSORDIR = themeFullDir + "/" + CURSORSSUBDIR;
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if (CURSORSSUBDIR.empty() || !std::filesystem::exists(CURSORDIR))
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return "loadTheme: cursors_directory missing or empty";
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for (auto& cursor : std::filesystem::directory_iterator(CURSORDIR)) {
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if (!cursor.is_regular_file())
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continue;
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auto& SHAPE = theme.shapes.emplace_back(std::make_unique<SCursorShape>());
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auto& LOADEDSHAPE = loadedShapes[SHAPE.get()];
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// extract zip to raw data.
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int errp = 0;
|
|
zip_t* zip = zip_open(cursor.path().string().c_str(), ZIP_RDONLY, &errp);
|
|
|
|
zip_file_t* meta_file = zip_fopen(zip, "meta.hl", ZIP_FL_UNCHANGED);
|
|
if (!meta_file)
|
|
return "cursor" + cursor.path().string() + "failed to load meta";
|
|
|
|
char* buffer = new char[1024 * 1024]; /* 1MB should be more than enough */
|
|
|
|
int readBytes = zip_fread(meta_file, buffer, 1024 * 1024 - 1);
|
|
|
|
zip_fclose(meta_file);
|
|
|
|
if (readBytes < 0) {
|
|
delete[] buffer;
|
|
return "cursor" + cursor.path().string() + "failed to read meta";
|
|
}
|
|
|
|
buffer[readBytes] = '\0';
|
|
|
|
std::unique_ptr<Hyprlang::CConfig> meta;
|
|
|
|
try {
|
|
meta = std::make_unique<Hyprlang::CConfig>(buffer, Hyprlang::SConfigOptions{.pathIsStream = true});
|
|
meta->addConfigValue("hotspot_x", Hyprlang::FLOAT{0.F});
|
|
meta->addConfigValue("hotspot_y", Hyprlang::FLOAT{0.F});
|
|
meta->addConfigValue("resize_algorithm", Hyprlang::STRING{"nearest"});
|
|
meta->registerHandler(::parseDefineSize, "define_size", {.allowFlags = false});
|
|
meta->registerHandler(::parseOverride, "define_override", {.allowFlags = false});
|
|
meta->commence();
|
|
meta->parse();
|
|
} catch (const char* err) { return "failed parsing meta: " + std::string{err}; }
|
|
|
|
delete[] buffer;
|
|
|
|
for (auto& i : SHAPE->images) {
|
|
if (SHAPE->shapeType == SHAPE_INVALID) {
|
|
if (i.filename.ends_with(".svg"))
|
|
SHAPE->shapeType = SHAPE_SVG;
|
|
else if (i.filename.ends_with(".png"))
|
|
SHAPE->shapeType = SHAPE_PNG;
|
|
else {
|
|
std::cout << "WARNING: image " << i.filename << " has no known extension, assuming png.\n";
|
|
SHAPE->shapeType = SHAPE_PNG;
|
|
}
|
|
} else {
|
|
if (SHAPE->shapeType == SHAPE_SVG && !i.filename.ends_with(".svg"))
|
|
return "meta invalid: cannot add .png files to an svg shape";
|
|
else if (SHAPE->shapeType == SHAPE_PNG && i.filename.ends_with(".svg"))
|
|
return "meta invalid: cannot add .svg files to a png shape";
|
|
}
|
|
|
|
// load image
|
|
Debug::log(TRACE, "Loading {} for shape {}", i.filename, cursor.path().stem().string());
|
|
auto* IMAGE = LOADEDSHAPE.images.emplace_back(std::make_unique<SLoadedCursorImage>()).get();
|
|
IMAGE->side = i.size;
|
|
|
|
// read from zip
|
|
zip_file_t* image_file = zip_fopen(zip, i.filename.c_str(), ZIP_FL_UNCHANGED);
|
|
if (!image_file)
|
|
return "cursor" + cursor.path().string() + "failed to load image_file";
|
|
|
|
IMAGE->data = new char[1024 * 1024]; /* 1MB should be more than enough, again. This probably should be in the spec. */
|
|
|
|
IMAGE->dataLen = zip_fread(image_file, IMAGE->data, 1024 * 1024 - 1);
|
|
|
|
zip_fclose(image_file);
|
|
|
|
Debug::log(TRACE, "Cairo: set up surface read");
|
|
|
|
if (SHAPE->shapeType == SHAPE_PNG) {
|
|
|
|
IMAGE->cairoSurface = cairo_image_surface_create_from_png_stream(::readPNG, IMAGE);
|
|
|
|
IMAGE->delay = i.delay;
|
|
|
|
if (const auto STATUS = cairo_surface_status(IMAGE->cairoSurface); STATUS != CAIRO_STATUS_SUCCESS) {
|
|
delete[] (char*)IMAGE->data;
|
|
IMAGE->data = nullptr;
|
|
return "Failed reading cairoSurface, status " + std::to_string((int)STATUS);
|
|
}
|
|
} else {
|
|
Debug::log(LOG, "Skipping cairo load for a svg surface");
|
|
}
|
|
}
|
|
|
|
if (SHAPE->images.empty())
|
|
return "meta invalid: no images for shape " + cursor.path().stem().string();
|
|
|
|
SHAPE->directory = cursor.path().stem().string();
|
|
SHAPE->hotspotX = std::any_cast<float>(meta->getConfigValue("hotspot_x"));
|
|
SHAPE->hotspotY = std::any_cast<float>(meta->getConfigValue("hotspot_y"));
|
|
SHAPE->resizeAlgo = stringToAlgo(std::any_cast<Hyprlang::STRING>(meta->getConfigValue("resize_algorithm")));
|
|
|
|
zip_discard(zip);
|
|
}
|
|
|
|
return {};
|
|
} |