new envs

doc/ENV.md

@@ -0,0 +1,5 @@
+Platforms that support both X11 and Wayland (Linux, namely) support launching Milsko programs with following environment variables:
+
+- `MW_BACKEND`: set to either `wayland` or `x11` to force which display protocol Wayland uses
+- `MW_FORCE_CSD`: set to force the wayland backend to use CSD instead of SSD
+- `MW_LIGHT_THEME`/`MW_DARK_THEME`: set to have either wayland or x11 ignore the system's appearence settings and either just use light theme/dark theme.

include/Mw/LowLevel.h

@@ -41,6 +41,11 @@ struct _MwLLCommon {
 	MwBool supports_transparency;
 
 	MwLLHandler handler;
+
+#if defined(USE_WAYLAND) || defined(USE_X11)
+	/*  0 = default, 1 = light, 2 = dark */
+	int theme_override;
+#endif
 };
 
 struct _MwLLCommonColor {

src/backend/wayland/wayland.c

@@ -942,11 +942,13 @@ static void dark_theme_listener(MwLL handle, MwU32 new_value) {
 static void detect_dark_theme(MwLL handle) {
 	MwU32 value = 0;
 
+	if(handle->common.theme_override != 0) {
+		handle->wayland.dark_theme = (handle->common.theme_override == 2) ? 1 : 0;
+	} else {
 		MwLLDBusPortalGet(&wl_call_tbl.dbus, &handle->wayland.dbus, "org.freedesktop.portal.Settings", "org.freedesktop.appearance", "color-scheme", &value);
 		handle->wayland.dark_theme = (value == 1) ? 1 : 0;
-
 		MwLLDBusPortalWatch(&wl_call_tbl.dbus, &handle->wayland.dbus, "org.freedesktop.portal.Settings");
-
+	}
 	MwLLDispatch(handle, dark_theme, &handle->wayland.dark_theme);
 }
 #endif
@@ -1381,9 +1383,8 @@ static int MwLLPendingImpl(MwLL handle) {
 	}
 
 #ifdef USE_DBUS
-	if(wl_call_tbl.has_dbus) {
+	if(wl_call_tbl.has_dbus || handle->common.theme_override == 0) {
 		if(handle->wayland.dark_theme_detection) {
-
 			handle->wayland.dark_theme_detection = MwFALSE;
 			detect_dark_theme(handle);
 			MwLLDispatch(handle, draw, NULL);
@@ -1908,9 +1909,21 @@ static void MwLLClipImpl(MwLL handle, MwRect* rect) {
 static int MwLLWaylandCallInitImpl(void) {
 #ifdef __linux__
 	MwBool loadWayland	  = MwFALSE;
-	if(getenv("MILSKO_BACKEND")) {
+	char*  milsko_backend_env = getenv("MILSKO_BACKEND");
-		loadWayland |=
+	char*  mw_backend_env	  = getenv("MW_BACKEND");
-		    (strcmp(getenv("MILSKO_BACKEND"), "wayland") == 0);
+
+	if(milsko_backend_env || mw_backend_env) {
+		if(milsko_backend_env) {
+			/*
+			 * (deprecated since 1.5+ but we have no reason to ever remove the old variable.
+			 * MW_BACKEND is just the one that's documented)
+			 */
+			printf("[WARNING] MILSKO_BACKEND env is deprecated, use MW_BACKEND instead.\n");
+			loadWayland |= (strcmp(milsko_backend_env, "wayland") == 0);
+		} else {
+			loadWayland |= (strcmp(mw_backend_env, "wayland") == 0);
+		}
+
 	} else if(getenv("WAYLAND_DISPLAY")) {
 		loadWayland |= (getenv("WAYLAND_DISPLAY") != NULL);
 	}

src/backend/x11.c

@@ -327,9 +327,12 @@ static XVisualInfo* get_visual_info(Display* display) {
 static void detect_dark_theme(MwLL handle) {
 	MwU32 value	 = 0;
 	MwU32 dark_theme = 0;
+	if(handle->common.theme_override != 0) {
+		dark_theme = (handle->common.theme_override == 2) ? 1 : 0;
+	} else {
 		MwLLDBusPortalGet(&xsymtbl.dbus, &handle->x11.dbus, "org.freedesktop.portal.Settings", "org.freedesktop.appearance", "color-scheme", &value);
-
 		dark_theme = (value == 1) ? 1 : 0;
+	}
 
 	MwLLDispatch(handle, dark_theme, &dark_theme);
 }
@@ -652,7 +655,7 @@ static int MwLLPendingImpl(MwLL handle) {
 	if(handle->x11.dark_theme_detection) {
 		handle->x11.dark_theme_detection = MwFALSE;
 #ifdef USE_DBUS
-		if(xsymtbl.has_dbus) {
+		if(xsymtbl.has_dbus || handle->common.theme_override == 0) {
 			detect_dark_theme(handle);
 			MwLLDispatch(handle, draw, NULL);
 		}
@@ -1404,9 +1407,20 @@ static void MwLLClipImpl(MwLL handle, MwRect* rect) {
 
 static int MwLLX11CallInitImpl(void) {
 	MwBool loadX11		  = MwFALSE;
-	if(getenv("MILSKO_BACKEND")) {
+	char*  milsko_backend_env = getenv("MILSKO_BACKEND");
-		loadX11 |=
+	char*  mw_backend_env	  = getenv("MW_BACKEND");
-		    (strcmp(getenv("MILSKO_BACKEND"), "x11") == 0);
+
+	if(milsko_backend_env || mw_backend_env) {
+		if(milsko_backend_env) {
+			/*
+			 * (deprecated since 1.5+ but we have no reason to ever remove the old variable.
+			 * MW_BACKEND is just the one that's documented)
+			 */
+			printf("[WARNING] MILSKO_BACKEND env is deprecated, use MW_BACKEND instead.\n");
+			loadX11 |= (strcmp(milsko_backend_env, "x11") == 0);
+		} else {
+			loadX11 |= (strcmp(mw_backend_env, "x11") == 0);
+		}
 	} else if(getenv("DISPLAY")) {
 		loadX11 |= (getenv("DISPLAY") != NULL);
 	}

src/lowlevel.c

@@ -66,10 +66,22 @@ void (*MwLLRaise)(MwLL handle) = NULL;
 void (*MwLLClip)(MwLL handle, MwRect* rect) = NULL;
 
 void MwLLCreateCommon(MwLL handle) {
+#if defined(USE_WAYLAND) || defined(USE_X11)
+	char* light_theme = getenv("MW_LIGHT_THEME");
+	char* dark_theme  = getenv("MW_DARK_THEME");
+#endif
+
 	handle->common.handler = malloc(sizeof(*handle->common.handler));
 	memset(handle->common.handler, 0, sizeof(*handle->common.handler));
 
 	handle->common.supports_transparency = 0;
+
+#if defined(USE_WAYLAND) || defined(USE_X11)
+	if(light_theme || dark_theme) {
+		handle->common.theme_override = (light_theme != NULL) ? 1 : ((dark_theme != NULL) ? 2 : 0);
+	}
+
+#endif
 }
 
 void MwLLDestroyCommon(MwLL handle) {