core: move colorspace handling to oklab (#8635)

* Meson: add hyprgraphics

* Nix: add hyprgraphics

* CI/setup_base: get hyprgraphics-git

---------

Co-authored-by: Mihai Fufezan <[email protected]>

3 files changed, 33 insertions, 14 deletions

diff --git a/src/config/ConfigDataValues.hpp b/src/config/ConfigDataValues.hpp
index 37c9fc92..212f26fa 100644
--- a/src/config/ConfigDataValues.hpp
+++ b/src/config/ConfigDataValues.hpp
@@ -21,8 +21,9 @@ class ICustomConfigValueData {
 class CGradientValueData : public ICustomConfigValueData {
   public:
     CGradientValueData() {};
-    CGradientValueData(CColor col) {
+    CGradientValueData(CHyprColor col) {
         m_vColors.push_back(col);
+        updateColorsOk();
     };
     virtual ~CGradientValueData() {};
 
@@ -30,14 +31,29 @@ class CGradientValueData : public ICustomConfigValueData {
         return CVD_TYPE_GRADIENT;
     }
 
-    void reset(CColor col) {
+    void reset(CHyprColor col) {
         m_vColors.clear();
         m_vColors.emplace_back(col);
         m_fAngle = 0;
+        updateColorsOk();
+    }
+
+    void updateColorsOk() {
+        m_vColorsOkLabA.clear();
+        for (auto& c : m_vColors) {
+            const auto OKLAB = c.asOkLab();
+            m_vColorsOkLabA.emplace_back(OKLAB.l);
+            m_vColorsOkLabA.emplace_back(OKLAB.a);
+            m_vColorsOkLabA.emplace_back(OKLAB.b);
+            m_vColorsOkLabA.emplace_back(c.a);
+        }
     }
 
     /* Vector containing the colors */
-    std::vector<CColor> m_vColors;
+    std::vector<CHyprColor> m_vColors;
+
+    /* Vector containing pure colors for shoving into opengl */
+    std::vector<float> m_vColorsOkLabA;
 
     /* Float corresponding to the angle (rad) */
     float m_fAngle = 0;
diff --git a/src/config/ConfigManager.cpp b/src/config/ConfigManager.cpp
index 07de8c24..820844eb 100644
--- a/src/config/ConfigManager.cpp
+++ b/src/config/ConfigManager.cpp
@@ -70,7 +70,7 @@ static Hyprlang::CParseResult configHandleGradientSet(const char* VALUE, void**
             const auto COL = configStringToInt(var);
             if (!COL)
                 throw std::runtime_error(std::format("failed to parse {} as a color", var));
-            DATA->m_vColors.push_back(CColor(COL.value()));
+            DATA->m_vColors.push_back(CHyprColor(COL.value()));
         } catch (std::exception& e) {
             Debug::log(WARN, "Error parsing gradient {}", V);
             parseError = "Error parsing gradient " + V + ": " + e.what();
@@ -85,6 +85,8 @@ static Hyprlang::CParseResult configHandleGradientSet(const char* VALUE, void**
         DATA->m_vColors.push_back(0); // transparent
     }
 
+    DATA->updateColorsOk();
+
     Hyprlang::CParseResult result;
     if (!parseError.empty())
         result.setError(parseError.c_str());
@@ -676,7 +678,7 @@ CConfigManager::CConfigManager() {
     Debug::disableTime = reinterpret_cast<int64_t* const*>(m_pConfig->getConfigValuePtr("debug:disable_time")->getDataStaticPtr());
 
     if (ERR.has_value())
-        g_pHyprError->queueCreate(ERR.value(), CColor{1.0, 0.1, 0.1, 1.0});
+        g_pHyprError->queueCreate(ERR.value(), CHyprColor{1.0, 0.1, 0.1, 1.0});
 }
 
 std::optional<std::string> CConfigManager::generateConfig(std::string configPath) {
@@ -883,14 +885,14 @@ void CConfigManager::postConfigReload(const Hyprlang::CParseResult& result) {
         m_szConfigErrors = "";
 
     if (result.error && !std::any_cast<Hyprlang::INT>(m_pConfig->getConfigValue("debug:suppress_errors")))
-        g_pHyprError->queueCreate(result.getError(), CColor(1.0, 50.0 / 255.0, 50.0 / 255.0, 1.0));
+        g_pHyprError->queueCreate(result.getError(), CHyprColor(1.0, 50.0 / 255.0, 50.0 / 255.0, 1.0));
     else if (std::any_cast<Hyprlang::INT>(m_pConfig->getConfigValue("autogenerated")) == 1)
         g_pHyprError->queueCreate(
             "Warning: You're using an autogenerated config! (config file: " + getMainConfigPath() +
                 " )\nSUPER+Q -> kitty (if it doesn't launch, make sure it's installed or choose a different terminal in the config)\nSUPER+M -> exit Hyprland",
-            CColor(1.0, 1.0, 70.0 / 255.0, 1.0));
+            CHyprColor(1.0, 1.0, 70.0 / 255.0, 1.0));
     else if (*PENABLEEXPLICIT != prevEnabledExplicit)
-        g_pHyprError->queueCreate("Warning: You changed the render:explicit_sync option, this requires you to restart Hyprland.", CColor(0.9, 0.76, 0.221, 1.0));
+        g_pHyprError->queueCreate("Warning: You changed the render:explicit_sync option, this requires you to restart Hyprland.", CHyprColor(0.9, 0.76, 0.221, 1.0));
     else
         g_pHyprError->destroy();
 
@@ -948,7 +950,8 @@ void CConfigManager::postConfigReload(const Hyprlang::CParseResult& result) {
     // manual crash
     if (std::any_cast<Hyprlang::INT>(m_pConfig->getConfigValue("debug:manual_crash")) && !m_bManualCrashInitiated) {
         m_bManualCrashInitiated = true;
-        g_pHyprNotificationOverlay->addNotification("Manual crash has been set up. Set debug:manual_crash back to 0 in order to crash the compositor.", CColor(0), 5000, ICON_INFO);
+        g_pHyprNotificationOverlay->addNotification("Manual crash has been set up. Set debug:manual_crash back to 0 in order to crash the compositor.", CHyprColor(0), 5000,
+                                                    ICON_INFO);
     } else if (m_bManualCrashInitiated && !std::any_cast<Hyprlang::INT>(m_pConfig->getConfigValue("debug:manual_crash"))) {
         // cowabunga it is
         g_pHyprRenderer->initiateManualCrash();
@@ -1015,7 +1018,7 @@ std::string CConfigManager::parseKeyword(const std::string& COMMAND, const std::
 
     if (COMMAND.contains("explicit")) {
         if (*PENABLEEXPLICIT != prevEnabledExplicit)
-            g_pHyprError->queueCreate("Warning: You changed the render:explicit_sync option, this requires you to restart Hyprland.", CColor(0.9, 0.76, 0.221, 1.0));
+            g_pHyprError->queueCreate("Warning: You changed the render:explicit_sync option, this requires you to restart Hyprland.", CHyprColor(0.9, 0.76, 0.221, 1.0));
         else
             g_pHyprError->destroy();
     }
@@ -1027,7 +1030,7 @@ std::string CConfigManager::parseKeyword(const std::string& COMMAND, const std::
     if (std::any_cast<Hyprlang::INT>(m_pConfig->getConfigValue("debug:manual_crash")) && !m_bManualCrashInitiated) {
         m_bManualCrashInitiated = true;
         if (g_pHyprNotificationOverlay) {
-            g_pHyprNotificationOverlay->addNotification("Manual crash has been set up. Set debug:manual_crash back to 0 in order to crash the compositor.", CColor(0), 5000,
+            g_pHyprNotificationOverlay->addNotification("Manual crash has been set up. Set debug:manual_crash back to 0 in order to crash the compositor.", CHyprColor(0), 5000,
                                                         ICON_INFO);
         }
     } else if (m_bManualCrashInitiated && !std::any_cast<Hyprlang::INT>(m_pConfig->getConfigValue("debug:manual_crash"))) {
@@ -1671,7 +1674,7 @@ SAnimationPropertyConfig* CConfigManager::getAnimationPropertyConfig(const std::
 }
 
 void CConfigManager::addParseError(const std::string& err) {
-    g_pHyprError->queueCreate(err + "\nHyprland may not work correctly.", CColor(1.0, 50.0 / 255.0, 50.0 / 255.0, 1.0));
+    g_pHyprError->queueCreate(err + "\nHyprland may not work correctly.", CHyprColor(1.0, 50.0 / 255.0, 50.0 / 255.0, 1.0));
 }
 
 PHLMONITOR CConfigManager::getBoundMonitorForWS(const std::string& wsname) {
@@ -1716,7 +1719,7 @@ void CConfigManager::handlePluginLoads() {
             error << "\n" << path;
         }
 
-        g_pHyprError->queueCreate(error.str(), CColor(1.0, 50.0 / 255.0, 50.0 / 255.0, 1.0));
+        g_pHyprError->queueCreate(error.str(), CHyprColor(1.0, 50.0 / 255.0, 50.0 / 255.0, 1.0));
     }
 
     if (pluginsChanged) {
diff --git a/src/config/ConfigManager.hpp b/src/config/ConfigManager.hpp
index 88b74b6e..a3b86e69 100644
--- a/src/config/ConfigManager.hpp
+++ b/src/config/ConfigManager.hpp
@@ -119,7 +119,7 @@ struct SConfigOptionDescription {
     };
 
     struct SColorData {
-        CColor color;
+        CHyprColor color;
     };
 
     struct SChoiceData {