remember window size and position in settings and apply at startup

Signed-off-by: Vladimir Pantelic <vladimir@pantelic.net>

src/gui.cpp

@@ -41,6 +41,10 @@ void windowSizeCallback(GLFWwindow* window, int width, int height) {
 	gScene->box.size = Vec(width, height);
 }
 
+void windowPosCallback(GLFWwindow* window, int width, int height) {
+	gScene->box.pos = Vec(width, height);
+}
+
 void mouseButtonCallback(GLFWwindow *window, int button, int action, int mods) {
 #ifdef ARCH_MAC
 	// Ctrl-left click --> right click
@@ -250,7 +254,8 @@ void guiInit() {
 	// glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
 	// glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
 	// glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-	glfwWindowHint(GLFW_MAXIMIZED, GLFW_TRUE);
+	glfwWindowHint(GLFW_MAXIMIZED, GLFW_FALSE);
+	glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
 	glfwWindowHint(GLFW_DOUBLEBUFFER, GLFW_TRUE);
 	gWindow = glfwCreateWindow(640, 480, "", NULL, NULL);
 	if (!gWindow) {
@@ -263,6 +268,7 @@ void guiInit() {
 	glfwSwapInterval(1);
 
 	glfwSetWindowSizeCallback(gWindow, windowSizeCallback);
+	glfwSetWindowPosCallback(gWindow, windowPosCallback);
 	glfwSetMouseButtonCallback(gWindow, mouseButtonStickyCallback);
 	// glfwSetCursorPosCallback(gWindow, cursorPosCallback);
 	glfwSetCursorEnterCallback(gWindow, cursorEnterCallback);
@@ -308,6 +314,23 @@ void guiDestroy() {
 
 void guiRun() {
 	assert(gWindow);
+	{
+		// check if we have a valid window size from settings and apply it
+		int width  = (int)gScene->box.size.x;
+		int height = (int)gScene->box.size.y;
+		int x      = (int)gScene->box.pos.x;
+		int y      = (int)gScene->box.pos.y;
+		if( width > 0  && height > 0 && x >= 0 && y >= 0 ) {
+			glfwSetWindowSize(gWindow, width, height);
+			glfwSetWindowPos(gWindow, x, y);
+		} else {
+			glfwMaximizeWindow(gWindow);
+			// help me Obi Wan: if we do not do this, widgets are not correclty drawn
+			int width, height;
+			glfwGetWindowSize(gWindow, &width, &height);
+			glfwSetWindowSize(gWindow, width, height);
+		}
+	}
 	{
 		int width, height;
 		glfwGetWindowSize(gWindow, &width, &height);

src/settings.cpp

@@ -48,6 +48,10 @@ static json_t *settingsToJson() {
 	json_t *lastPathJ = json_string(gRackWidget->lastPath.c_str());
 	json_object_set_new(rootJ, "lastPath", lastPathJ);
 
+	// window size and position
+	json_t *winJ = json_pack("[i, i, i, i]", (int)gScene->box.size.x, (int)gScene->box.size.y, (int)gScene->box.pos.x, (int)gScene->box.pos.y );
+	json_object_set_new(rootJ, "window", winJ);
+
 	return rootJ;
 }
 
@@ -95,6 +99,22 @@ static void settingsFromJson(json_t *rootJ) {
 	json_t *lastPathJ = json_object_get(rootJ, "lastPath");
 	if (lastPathJ)
 		gRackWidget->lastPath = json_string_value(lastPathJ);
+
+	// window size and position
+	json_t *winJ = json_object_get(rootJ, "window");
+	int w = 0;
+	int h = 0;
+	int x = 0;
+	int y = 0;
+	json_unpack(winJ, "[i, i, i, i]", &w, &h, &x, &y);
+	if( x < 0 )
+		x = 0;
+	if( y < 0 )
+		y = 0;
+	if(w > 0 && h > 0) {
+		gScene->box.size = Vec(w, h);
+		gScene->box.pos  = Vec(x, y);
+	}
 }