feat: border angle animations (#1469)

Co-authored-by: vaxerski <43317083+vaxerski@users.noreply.github.com>

example/hyprland.conf

@@ -73,6 +73,7 @@ animations {
     animation = windows, 1, 7, myBezier
     animation = windowsOut, 1, 7, default, popin 80%
     animation = border, 1, 10, default
+    animation = borderangle, 1, 8, default
     animation = fade, 1, 7, default
     animation = workspaces, 1, 6, default
 }

src/Compositor.cpp

@@ -1565,8 +1565,8 @@ void CCompositor::updateWindowAnimatedDecorationValues(CWindow* pWindow) {
 
         pWindow->m_cRealBorderColorPrevious = pWindow->m_cRealBorderColor;
         pWindow->m_cRealBorderColor         = grad;
-        pWindow->m_fBorderAnimationProgress.setValueAndWarp(0.f);
+        pWindow->m_fBorderFadeAnimationProgress.setValueAndWarp(0.f);
-        pWindow->m_fBorderAnimationProgress = 1.f;
+        pWindow->m_fBorderFadeAnimationProgress = 1.f;
     };
 
     // border
@@ -1581,6 +1581,10 @@ void CCompositor::updateWindowAnimatedDecorationValues(CWindow* pWindow) {
                                                        CGradientValueData(CColor(pWindow->m_sSpecialRenderData.inactiveBorderColor.toUnderlying())) :
                                                        *INACTIVECOL));
 
+    // tick angle if it's not running (aka dead)
+    if (!pWindow->m_fBorderAngleAnimationProgress.isBeingAnimated())
+        pWindow->m_fBorderAngleAnimationProgress.setValueAndWarp(0.f);
+
     // opacity
     const auto PWORKSPACE = g_pCompositor->getWorkspaceByID(pWindow->m_iWorkspaceID);
     if (pWindow->m_bIsFullscreen && PWORKSPACE->m_efFullscreenMode == FULLSCREEN_FULL) {

src/Window.cpp

@@ -5,7 +5,8 @@
 CWindow::CWindow() {
     m_vRealPosition.create(AVARTYPE_VECTOR, g_pConfigManager->getAnimationPropertyConfig("windowsIn"), (void*)this, AVARDAMAGE_ENTIRE);
     m_vRealSize.create(AVARTYPE_VECTOR, g_pConfigManager->getAnimationPropertyConfig("windowsIn"), (void*)this, AVARDAMAGE_ENTIRE);
-    m_fBorderAnimationProgress.create(AVARTYPE_FLOAT, g_pConfigManager->getAnimationPropertyConfig("border"), (void*)this, AVARDAMAGE_BORDER);
+    m_fBorderFadeAnimationProgress.create(AVARTYPE_FLOAT, g_pConfigManager->getAnimationPropertyConfig("border"), (void*)this, AVARDAMAGE_BORDER);
+    m_fBorderAngleAnimationProgress.create(AVARTYPE_FLOAT, g_pConfigManager->getAnimationPropertyConfig("borderangle"), (void*)this, AVARDAMAGE_BORDER);
     m_fAlpha.create(AVARTYPE_FLOAT, g_pConfigManager->getAnimationPropertyConfig("fadeIn"), (void*)this, AVARDAMAGE_ENTIRE);
     m_fActiveInactiveAlpha.create(AVARTYPE_FLOAT, g_pConfigManager->getAnimationPropertyConfig("fadeSwitch"), (void*)this, AVARDAMAGE_ENTIRE);
     m_cRealShadowColor.create(AVARTYPE_COLOR, g_pConfigManager->getAnimationPropertyConfig("fadeShadow"), (void*)this, AVARDAMAGE_SHADOW);
@@ -263,7 +264,8 @@ void CWindow::onUnmap() {
 
     m_vRealPosition.setCallbackOnEnd(unregisterVar);
     m_vRealSize.setCallbackOnEnd(unregisterVar);
-    m_fBorderAnimationProgress.setCallbackOnEnd(unregisterVar);
+    m_fBorderFadeAnimationProgress.setCallbackOnEnd(unregisterVar);
+    m_fBorderAngleAnimationProgress.setCallbackOnEnd(unregisterVar);
     m_fActiveInactiveAlpha.setCallbackOnEnd(unregisterVar);
     m_fAlpha.setCallbackOnEnd(unregisterVar);
     m_cRealShadowColor.setCallbackOnEnd(unregisterVar);
@@ -279,7 +281,8 @@ void CWindow::onMap() {
     // JIC, reset the callbacks. If any are set, we'll make sure they are cleared so we don't accidentally unset them. (In case a window got remapped)
     m_vRealPosition.resetAllCallbacks();
     m_vRealSize.resetAllCallbacks();
-    m_fBorderAnimationProgress.resetAllCallbacks();
+    m_fBorderFadeAnimationProgress.resetAllCallbacks();
+    m_fBorderAngleAnimationProgress.resetAllCallbacks();
     m_fActiveInactiveAlpha.resetAllCallbacks();
     m_fAlpha.resetAllCallbacks();
     m_cRealShadowColor.resetAllCallbacks();
@@ -287,7 +290,8 @@ void CWindow::onMap() {
 
     m_vRealPosition.registerVar();
     m_vRealSize.registerVar();
-    m_fBorderAnimationProgress.registerVar();
+    m_fBorderFadeAnimationProgress.registerVar();
+    m_fBorderAngleAnimationProgress.registerVar();
     m_fActiveInactiveAlpha.registerVar();
     m_fAlpha.registerVar();
     m_cRealShadowColor.registerVar();
@@ -296,9 +300,30 @@ void CWindow::onMap() {
     m_vRealSize.setCallbackOnEnd([&](void* ptr) { g_pHyprOpenGL->onWindowResizeEnd(this); }, false);
     m_vRealSize.setCallbackOnBegin([&](void* ptr) { g_pHyprOpenGL->onWindowResizeStart(this); }, false);
 
+    m_fBorderAngleAnimationProgress.setCallbackOnEnd([&](void* ptr) { onBorderAngleAnimEnd(ptr); }, false);
+
+    m_fBorderAngleAnimationProgress.setValueAndWarp(0.f);
+    m_fBorderAngleAnimationProgress = 1.f;
+
     g_pCompositor->m_vWindowFocusHistory.push_back(this);
 }
 
+void CWindow::onBorderAngleAnimEnd(void* ptr) {
+    const auto        PANIMVAR = (CAnimatedVariable*)ptr;
+
+    const std::string STYLE = PANIMVAR->getConfig()->pValues->internalStyle;
+
+    if (STYLE != "loop")
+        return;
+
+    PANIMVAR->setCallbackOnEnd(nullptr); // we remove the callback here because otherwise setvalueandwarp will recurse this
+
+    PANIMVAR->setValueAndWarp(0);
+    *PANIMVAR = 1.f;
+
+    PANIMVAR->setCallbackOnEnd([&](void* ptr) { onBorderAngleAnimEnd(ptr); }, false);
+}
+
 void CWindow::setHidden(bool hidden) {
     m_bHidden = hidden;
 

src/Window.hpp

@@ -220,7 +220,8 @@ class CWindow {
     // Animated border
     CGradientValueData m_cRealBorderColor         = {0};
     CGradientValueData m_cRealBorderColorPrevious = {0};
-    CAnimatedVariable  m_fBorderAnimationProgress;
+    CAnimatedVariable  m_fBorderFadeAnimationProgress;
+    CAnimatedVariable  m_fBorderAngleAnimationProgress;
 
     // Fade in-out
     CAnimatedVariable m_fAlpha;
@@ -296,6 +297,7 @@ class CWindow {
     bool                   isHidden();
     void                   applyDynamicRule(const SWindowRule& r);
     void                   updateDynamicRules();
+    void                   onBorderAngleAnimEnd(void* ptr);
 
   private:
     // For hidden windows and stuff

src/config/ConfigDataValues.hpp

@@ -2,7 +2,8 @@
 #include "../defines.hpp"
 #include <vector>
 
-enum eConfigValueDataTypes {
+enum eConfigValueDataTypes
+{
     CVD_TYPE_INVALID  = -1,
     CVD_TYPE_GRADIENT = 0
 };

src/config/ConfigManager.cpp

@@ -220,6 +220,7 @@ void CConfigManager::setDefaultAnimationVars() {
         INITANIMCFG("windows");
         INITANIMCFG("fade");
         INITANIMCFG("border");
+        INITANIMCFG("borderangle");
         INITANIMCFG("workspaces");
 
         // windows
@@ -246,6 +247,7 @@ void CConfigManager::setDefaultAnimationVars() {
     CREATEANIMCFG("windows", "global");
     CREATEANIMCFG("fade", "global");
     CREATEANIMCFG("border", "global");
+    CREATEANIMCFG("borderangle", "global");
     CREATEANIMCFG("workspaces", "global");
 
     CREATEANIMCFG("windowsIn", "windows");

src/config/defaultConfig.hpp

@@ -82,6 +82,7 @@ animations {
     animation = windows, 1, 7, myBezier
     animation = windowsOut, 1, 7, default, popin 80%
     animation = border, 1, 10, default
+    animation = borderangle, 1, 8, default
     animation = fade, 1, 7, default
     animation = workspaces, 1, 6, default
 }

src/helpers/MiscFunctions.cpp

@@ -518,3 +518,19 @@ int64_t configStringToInt(const std::string& VALUE) {
     }
     return std::stoll(VALUE);
 }
+
+double normalizeAngleRad(double ang) {
+    if (ang > M_PI * 2) {
+        while (ang > M_PI * 2)
+            ang -= M_PI * 2;
+        return ang;
+    }
+
+    if (ang < 0.0) {
+        while (ang < 0.0)
+            ang += M_PI * 2;
+        return ang;
+    }
+
+    return ang;
+}

src/helpers/MiscFunctions.hpp

@@ -20,3 +20,5 @@ int64_t     configStringToInt(const std::string&);
 float       getPlusMinusKeywordResult(std::string in, float relative);
 
 void        matrixProjection(float mat[9], int w, int h, wl_output_transform tr);
+
+double      normalizeAngleRad(double ang);

src/managers/AnimationManager.cpp

@@ -453,6 +453,10 @@ std::string CAnimationManager::styleValidInConfigVar(const std::string& config,
             return "";
 
         return "unknown style";
+    } else if (config == "borderangle") {
+        if (style == "loop" || style == "once")
+            return "";
+        return "unknown style";
     } else {
         return "animation has no styles";
     }

src/render/Renderer.cpp

@@ -310,8 +310,13 @@ void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec*
             rounding *= pMonitor->scale;
 
             auto       grad     = g_pHyprOpenGL->m_pCurrentWindow->m_cRealBorderColor;
-            const bool ANIMATED = g_pHyprOpenGL->m_pCurrentWindow->m_fBorderAnimationProgress.isBeingAnimated();
+            const bool ANIMATED = g_pHyprOpenGL->m_pCurrentWindow->m_fBorderFadeAnimationProgress.isBeingAnimated();
-            float      a1       = renderdata.fadeAlpha * renderdata.alpha * (ANIMATED ? g_pHyprOpenGL->m_pCurrentWindow->m_fBorderAnimationProgress.fl() : 1.f);
+            float      a1       = renderdata.fadeAlpha * renderdata.alpha * (ANIMATED ? g_pHyprOpenGL->m_pCurrentWindow->m_fBorderFadeAnimationProgress.fl() : 1.f);
+
+            if (g_pHyprOpenGL->m_pCurrentWindow->m_fBorderAngleAnimationProgress.getConfig()->pValues->internalEnabled) {
+                grad.m_fAngle += g_pHyprOpenGL->m_pCurrentWindow->m_fBorderAngleAnimationProgress.fl() * M_PI * 2;
+                grad.m_fAngle = normalizeAngleRad(grad.m_fAngle);
+            }
 
             wlr_box windowBox = {renderdata.x - pMonitor->vecPosition.x, renderdata.y - pMonitor->vecPosition.y, renderdata.w, renderdata.h};
 
@@ -320,7 +325,7 @@ void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec*
             g_pHyprOpenGL->renderBorder(&windowBox, grad, rounding, a1);
 
             if (ANIMATED) {
-                float a2 = renderdata.fadeAlpha * renderdata.alpha * (1.f - g_pHyprOpenGL->m_pCurrentWindow->m_fBorderAnimationProgress.fl());
+                float a2 = renderdata.fadeAlpha * renderdata.alpha * (1.f - g_pHyprOpenGL->m_pCurrentWindow->m_fBorderFadeAnimationProgress.fl());
                 g_pHyprOpenGL->renderBorder(&windowBox, g_pHyprOpenGL->m_pCurrentWindow->m_cRealBorderColorPrevious, rounding, a2);
             }
         }