From e9f226797e43cedf17b094bc498272213ed53687 Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Tue, 13 Sep 2022 15:25:42 +0200
Subject: Added monitor mirroring

---
 src/render/Renderer.cpp | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

(limited to 'src/render/Renderer.cpp')

diff --git a/src/render/Renderer.cpp b/src/render/Renderer.cpp
index fc02af61..a1699f36 100644
--- a/src/render/Renderer.cpp
+++ b/src/render/Renderer.cpp
@@ -778,7 +778,7 @@ void CHyprRenderer::damageWindow(CWindow* pWindow) {
 }
 
 void CHyprRenderer::damageMonitor(CMonitor* pMonitor) {
-    if (g_pCompositor->m_bUnsafeState)
+    if (g_pCompositor->m_bUnsafeState || pMonitor->isMirror())
         return;
 
     wlr_box damageBox = {0, 0, pMonitor->vecPixelSize.x, pMonitor->vecPixelSize.y};
@@ -795,6 +795,9 @@ void CHyprRenderer::damageBox(wlr_box* pBox) {
         return;
 
     for (auto& m : g_pCompositor->m_vMonitors) {
+        if (m->isMirror())
+            continue; // don't damage mirrors traditionally
+
         wlr_box damageBox = {pBox->x - m->vecPosition.x, pBox->y - m->vecPosition.y, pBox->width, pBox->height};
         scaleBox(&damageBox, m->scale);
         m->addDamage(&damageBox);
@@ -818,6 +821,19 @@ void CHyprRenderer::damageRegion(pixman_region32_t* rg) {
     }
 }
 
+void CHyprRenderer::damageMirrorsWith(CMonitor* pMonitor, pixman_region32_t* pRegion) {
+    for (auto& mirror : pMonitor->mirrors) {
+        Vector2D scale = {mirror->vecSize.x / pMonitor->vecSize.x, mirror->vecSize.y / pMonitor->vecSize.y};
+
+        pixman_region32_t rg;
+        pixman_region32_init(&rg);
+        pixman_region32_copy(&rg, pRegion);
+        wlr_region_scale_xy(&rg, &rg, scale.x, scale.y);
+        pMonitor->addDamage(&rg);
+        pixman_region32_fini(&rg);
+    }
+}
+
 void CHyprRenderer::renderDragIcon(CMonitor* pMonitor, timespec* time) {
     if (!(g_pInputManager->m_sDrag.dragIcon && g_pInputManager->m_sDrag.iconMapped && g_pInputManager->m_sDrag.dragIcon->surface))
         return;
@@ -1029,7 +1045,8 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
         pMonitor->vecPosition = finalPos;
     }
 
-    wlr_output_layout_add(g_pCompositor->m_sWLROutputLayout, pMonitor->output, (int)pMonitor->vecPosition.x, (int)pMonitor->vecPosition.y);
+    if (!pMonitor->isMirror())
+        wlr_output_layout_add(g_pCompositor->m_sWLROutputLayout, pMonitor->output, (int)pMonitor->vecPosition.x, (int)pMonitor->vecPosition.y);
 
     wlr_output_enable(pMonitor->output, true);
 
@@ -1042,6 +1059,9 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
     // frame skip
     pMonitor->framesToSkip = 1;
 
+    // reload to fix mirrors
+    g_pConfigManager->m_bWantsMonitorReload = true;
+
     return true;
 }
 
-- 
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