From bbc8bf669119233f68e78dd5b8ef99883a25d235 Mon Sep 17 00:00:00 2001
From: William McBrine <wmcbrine@gmail.com>
Date: Mon, 18 Dec 2017 08:41:04 -0500
Subject: [PATCH] Resize maximums for SDL. To Do: The size returned for SDL2 is
 still too optimistic.

---
 sdl1/pdcscrn.c | 10 ++++++++++
 sdl2/pdcscrn.c |  8 ++++++++
 2 files changed, 18 insertions(+)

diff --git a/sdl1/pdcscrn.c b/sdl1/pdcscrn.c
index 8e9a0e60..ebacf2eb 100644
--- a/sdl1/pdcscrn.c
+++ b/sdl1/pdcscrn.c
@@ -31,6 +31,8 @@ Uint32 pdc_mapped[16];
 int pdc_fheight, pdc_fwidth, pdc_flastc;
 bool pdc_own_screen;
 
+static int max_height, max_width;
+
 /* COLOR_PAIR to attribute encoding table. */
 
 static struct {short f, b;} atrtab[PDC_COLOR_PAIRS];
@@ -212,6 +214,10 @@ int PDC_scr_open(int argc, char **argv)
 
     if (pdc_own_screen)
     {
+        const SDL_VideoInfo *info = SDL_GetVideoInfo();
+        max_height = info->current_h;
+        max_width = info->current_w;
+
         const char *env = getenv("PDC_LINES");
         pdc_sheight = (env ? atoi(env) : 25) * pdc_fheight;
 
@@ -281,7 +287,11 @@ int PDC_resize_screen(int nlines, int ncols)
 
     if (nlines && ncols)
     {
+        while (nlines * pdc_fheight > max_height)
+            nlines--;
         pdc_sheight = nlines * pdc_fheight;
+        while (ncols * pdc_fwidth > max_width)
+            ncols--;
         pdc_swidth = ncols * pdc_fwidth;
     }
 
diff --git a/sdl2/pdcscrn.c b/sdl2/pdcscrn.c
index de1f0a58..647eb028 100644
--- a/sdl2/pdcscrn.c
+++ b/sdl2/pdcscrn.c
@@ -293,12 +293,20 @@ int PDC_scr_open(int argc, char **argv)
 
 int PDC_resize_screen(int nlines, int ncols)
 {
+    SDL_Rect max;
+
     if (!pdc_own_window)
         return ERR;
 
+    SDL_GetDisplayBounds(0, &max);
+
     if (nlines && ncols)
     {
+        while (nlines * pdc_fheight > max.h)
+            nlines--;
         pdc_sheight = nlines * pdc_fheight;
+        while (ncols * pdc_fwidth > max.w)
+            ncols--;
         pdc_swidth = ncols * pdc_fwidth;
     }