hyprbars: support a dynamic nobar window rule

fixes #70

fixes #28

ref #74

hyprbars/README.md

@@ -52,4 +52,10 @@ Use the `hyprbars-button` keyword.
 
 ```ini
 hyprbars-button = color, size, icon, on-click
-```
+```
+
+## Window rules
+
+Hyprbars supports the following _dynamic_ window rules:
+
+`plugin:hyprbars:nobar` -> disables the bar on matching windows.

hyprbars/barDeco.cpp

@@ -31,11 +31,11 @@ SDecorationPositioningInfo CHyprBar::getPositioningInfo() {
     static auto* const         PPRECEDENCE = (Hyprlang::INT* const*)HyprlandAPI::getConfigValue(PHANDLE, "plugin:hyprbars:bar_precedence_over_border")->getDataStaticPtr();
 
     SDecorationPositioningInfo info;
-    info.policy         = DECORATION_POSITION_STICKY;
+    info.policy         = m_bHidden ? DECORATION_POSITION_ABSOLUTE : DECORATION_POSITION_STICKY;
     info.edges          = DECORATION_EDGE_TOP;
     info.priority       = **PPRECEDENCE ? 10005 : 5000;
     info.reserved       = true;
-    info.desiredExtents = {{0, **PHEIGHT}, {0, 0}};
+    info.desiredExtents = {{0, m_bHidden ? 0 : **PHEIGHT}, {0, 0}};
     return info;
 }
 
@@ -381,7 +381,7 @@ void CHyprBar::renderBarButtonsText(CBox* barBox, const float scale, const float
 }
 
 void CHyprBar::draw(CMonitor* pMonitor, float a) {
-    if (!validMapped(m_pWindow))
+    if (m_bHidden || !validMapped(m_pWindow))
         return;
 
     const auto PWINDOW = m_pWindow.lock();
@@ -536,3 +536,12 @@ CBox CHyprBar::assignedBoxGlobal() {
 PHLWINDOW CHyprBar::getOwner() {
     return m_pWindow.lock();
 }
+
+void CHyprBar::setHidden(bool hidden) {
+    if (m_bHidden == hidden)
+        return;
+
+    m_bHidden = hidden;
+
+    g_pDecorationPositioner->repositionDeco(this);
+}

hyprbars/barDeco.hpp

@@ -33,6 +33,8 @@ class CHyprBar : public IHyprWindowDecoration {
 
     PHLWINDOW                          getOwner();
 
+    void                               setHidden(bool hidden);
+
   private:
     SWindowDecorationExtents          m_seExtents;
 
@@ -44,6 +46,7 @@ class CHyprBar : public IHyprWindowDecoration {
     CTexture                          m_tButtonsTex;
 
     bool                              m_bWindowSizeChanged = false;
+    bool                              m_bHidden            = false;
 
     Vector2D                          cursorRelativeToBar();
 

hyprbars/main.cpp

@@ -30,7 +30,7 @@ static void onCloseWindow(void* self, std::any data) {
     // data is guaranteed
     const auto PWINDOW = std::any_cast<PHLWINDOW>(data);
 
-    const auto  BARIT = std::find_if(g_pGlobalState->bars.begin(), g_pGlobalState->bars.end(), [PWINDOW](const auto& bar) { return bar->getOwner() == PWINDOW; });
+    const auto BARIT = std::find_if(g_pGlobalState->bars.begin(), g_pGlobalState->bars.end(), [PWINDOW](const auto& bar) { return bar->getOwner() == PWINDOW; });
 
     if (BARIT == g_pGlobalState->bars.end())
         return;
@@ -39,10 +39,21 @@ static void onCloseWindow(void* self, std::any data) {
     PWINDOW->removeWindowDeco(*BARIT);
 }
 
-void onPreConfigReload() {
+static void onPreConfigReload() {
     g_pGlobalState->buttons.clear();
 }
 
+static void onUpdateWindowRules(PHLWINDOW window) {
+    const auto BARIT = std::find_if(g_pGlobalState->bars.begin(), g_pGlobalState->bars.end(), [window](const auto& bar) { return bar->getOwner() == window; });
+
+    if (BARIT == g_pGlobalState->bars.end())
+        return;
+
+    const auto HASNOBAR = std::find_if(window->m_vMatchedRules.begin(), window->m_vMatchedRules.end(), [](const auto& rule) { return rule.szRule == "plugin:hyprbars:nobar"; }) != window->m_vMatchedRules.end();
+
+    (*BARIT)->setHidden(HASNOBAR);
+}
+
 Hyprlang::CParseResult onNewButton(const char* K, const char* V) {
     std::string            v = V;
     CVarList               vars(v);
@@ -88,6 +99,8 @@ APICALL EXPORT PLUGIN_DESCRIPTION_INFO PLUGIN_INIT(HANDLE handle) {
 
     static auto P  = HyprlandAPI::registerCallbackDynamic(PHANDLE, "openWindow", [&](void* self, SCallbackInfo& info, std::any data) { onNewWindow(self, data); });
     static auto P2 = HyprlandAPI::registerCallbackDynamic(PHANDLE, "closeWindow", [&](void* self, SCallbackInfo& info, std::any data) { onCloseWindow(self, data); });
+    static auto P3 = HyprlandAPI::registerCallbackDynamic(PHANDLE, "windowUpdateRules",
+                                                          [&](void* self, SCallbackInfo& info, std::any data) { onUpdateWindowRules(std::any_cast<PHLWINDOW>(data)); });
 
     HyprlandAPI::addConfigValue(PHANDLE, "plugin:hyprbars:bar_color", Hyprlang::INT{configStringToInt("rgba(33333388)")});
     HyprlandAPI::addConfigValue(PHANDLE, "plugin:hyprbars:bar_height", Hyprlang::INT{15});
@@ -103,7 +116,7 @@ APICALL EXPORT PLUGIN_DESCRIPTION_INFO PLUGIN_INIT(HANDLE handle) {
     HyprlandAPI::addConfigValue(PHANDLE, "plugin:hyprbars:bar_button_padding", Hyprlang::INT{5});
 
     HyprlandAPI::addConfigKeyword(PHANDLE, "hyprbars-button", onNewButton, Hyprlang::SHandlerOptions{});
-    static auto P3 = HyprlandAPI::registerCallbackDynamic(PHANDLE, "preConfigReload", [&](void* self, SCallbackInfo& info, std::any data) { onPreConfigReload(); });
+    static auto P4 = HyprlandAPI::registerCallbackDynamic(PHANDLE, "preConfigReload", [&](void* self, SCallbackInfo& info, std::any data) { onPreConfigReload(); });
 
     // add deco to existing windows
     for (auto& w : g_pCompositor->m_vWindows) {