From c228819e3081d49dbedce73834aa2305e598e3e2 Mon Sep 17 00:00:00 2001
From: "gabriel.dasilvam" <gabriel.dasilva-marques@hesge.ch>
Date: Thu, 2 May 2024 14:50:40 +0200
Subject: [PATCH] Implementing GetMonitorWidth/Height and
 GetMonitorPhysicalWidth/Height for drm

Added implementation for DRM for functions :
 - GetMonitorWidth()
 - GetMonitorHeight()
 - GetMonitorPhysicalWidth()
 - GetMonitorPhysicalHeight()
 - GetMonnitorName()

These functions take an argument but only the value 0 is accepted. This is because the DRM platform implementation manages only one screen for now
---
 src/platforms/rcore_drm.c | 74 +++++++++++++++++++++++++++++++++------
 1 file changed, 64 insertions(+), 10 deletions(-)

diff --git a/src/platforms/rcore_drm.c b/src/platforms/rcore_drm.c
index a07ba27f1..8582fe5f4 100644
--- a/src/platforms/rcore_drm.c
+++ b/src/platforms/rcore_drm.c
@@ -388,29 +388,77 @@ Vector2 GetMonitorPosition(int monitor)
 // Get selected monitor width (currently used by monitor)
 int GetMonitorWidth(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorWidth() not implemented on target platform");
-    return 0;
+    int width = 0;
+    if (monitor > 0)
+    {
+        TRACELOG(LOG_WARNING, "GetMonitorWidth() implemented for first monitor only");
+    }
+    else
+    {
+        if ((platform.connector) && (platform.modeIndex >= 0))
+        {
+            width = platform.connector->modes[platform.modeIndex].hdisplay;
+        }
+    }
+
+    return width;
 }
 
 // Get selected monitor height (currently used by monitor)
 int GetMonitorHeight(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorHeight() not implemented on target platform");
-    return 0;
+    int height = 0;
+    if (monitor > 0)
+    {
+        TRACELOG(LOG_WARNING, "GetMonitorHeight() implemented for first monitor only");
+    }
+    else
+    {
+        if ((platform.connector) && (platform.modeIndex >= 0))
+        {
+            height = platform.connector->modes[platform.modeIndex].vdisplay;
+        }
+    }
+
+    return height;
 }
 
 // Get selected monitor physical width in millimetres
 int GetMonitorPhysicalWidth(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorPhysicalWidth() not implemented on target platform");
-    return 0;
+    int physicalWidth = 0;
+    if (monitor > 0)
+    {
+        TRACELOG(LOG_WARNING, "GetMonitorPhysicalWidth() implemented for first monitor only");
+    }
+    else
+    {
+        if ((platform.connector) && (platform.modeIndex >= 0))
+        {
+            physicalWidth = platform.connector->mmWidth;
+        }
+    }
+
+    return physicalWidth;
 }
 
 // Get selected monitor physical height in millimetres
 int GetMonitorPhysicalHeight(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorPhysicalHeight() not implemented on target platform");
-    return 0;
+    int physicalHeight = 0;
+    if (monitor > 0)
+    {
+        TRACELOG(LOG_WARNING, "GetMonitorPhysicalHeight() implemented for first monitor only");
+    }
+    else
+    {
+        if ((platform.connector) && (platform.modeIndex >= 0))
+        {
+            physicalHeight = platform.connector->mmHeight;
+        }
+    }
+
+    return physicalHeight;
 }
 
 // Get selected monitor refresh rate
@@ -429,8 +477,14 @@ int GetMonitorRefreshRate(int monitor)
 // Get the human-readable, UTF-8 encoded name of the selected monitor
 const char *GetMonitorName(int monitor)
 {
-    TRACELOG(LOG_WARNING, "GetMonitorName() not implemented on target platform");
-    return "";
+    const char *name = NULL;
+
+    if ((platform.connector) && (platform.modeIndex >= 0))
+    {
+        name = platform.connector->modes[platform.modeIndex].name;
+    }
+
+    return name;
 }
 
 // Get window position XY on monitor