From 79b50bffb05ee2c9bd84af879f574ee521bf4669 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Sat, 28 Sep 2019 13:53:45 +0200
Subject: Show more info in SDL view

---
 sdl.cpp | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/sdl.cpp b/sdl.cpp
index 37b6f8e..dcc2bb9 100644
--- a/sdl.cpp
+++ b/sdl.cpp
@@ -1,4 +1,6 @@
 #include <iostream>
+#include <iomanip>
+#include <sstream>
 #include <SDL.h>
 #include "mandel.h"
 
@@ -39,12 +41,25 @@ int main() {
 
 		bool need_redraw = false;
 
+		{
+			stringstream ss;
+			ss << "Mandel "
+			   << setprecision(17)
+			   << " x=" << par.cx
+			   << " y=" << par.cy
+			   << " w=" << par.imgw
+			   << " i=" << par.maxit;
+			SDL_SetWindowTitle(window, ss.str().data());
+		}
+
 		SDL_Event e;
 		if (SDL_WaitEvent(&e) == 0) {
 			cerr << "SDL event wait error: " << SDL_GetError() << endl;
 			break;
 		}
 
+		winsurf = SDL_GetWindowSurface(window);
+
 		switch (e.type) {
 			case SDL_QUIT:
 				break;
@@ -114,9 +129,11 @@ int main() {
 
 						winsurf = SDL_GetWindowSurface(window);
 						SDL_GetWindowSize(window, &w, &h);
+						cerr << "w=" << w << " h=" << h << endl;
+						cerr << "surface: w=" << winsurf->w << " h=" << winsurf->h << endl;
+						imgdata = new uint8_t[3 * w * h];
 						mandelsurf = SDL_CreateRGBSurfaceFrom(imgdata, w, h, 24, 3 * w, 0x0000000ff, 0x0000ff00, 0x00ff0000, 0);
 						ctx = mandel_init(w, h);
-						imgdata = new uint8_t[3 * w * h];
 						need_redraw = true;
 						break;
 				}
@@ -125,6 +142,9 @@ int main() {
 
 		if (need_redraw) {
 			SDL_GetWindowSize(window, &w, &h);
+			cerr << "w=" << w << " h=" << h << endl;
+			cerr << "winsurf: w=" << winsurf->w << " h=" << winsurf->h << endl;
+			cerr << "mandelsurf: w=" << mandelsurf->w << " h=" << mandelsurf->h << endl;
 			mandel_render(imgdata, ctx, &par);
 
 			if (SDL_MUSTLOCK(winsurf)) SDL_LockSurface(winsurf);
-- 
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