From c3094d022dc52d8e292103a9019cc2312927289d Mon Sep 17 00:00:00 2001
From: Lili1228 <lili@lili.lgbt>
Date: Fri, 6 Feb 2026 22:32:46 +0100
Subject: [PATCH] ESC/P 2: Exact paper sizes, 1/36" margins

---
 src/include/86box/prt_papersizes.h | 24 ++++++++++++------------
 src/printer/prt_escp.c             |  4 ++--
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/src/include/86box/prt_papersizes.h b/src/include/86box/prt_papersizes.h
index e468abb35..f0c9e626a 100644
--- a/src/include/86box/prt_papersizes.h
+++ b/src/include/86box/prt_papersizes.h
@@ -28,27 +28,27 @@
 #define LEDGER_PAGE_HEIGHT  17.0
 
 /* Standard A0 */
-#define A0_PAGE_WIDTH   33.125
-#define A0_PAGE_HEIGHT  46.75
+#define A0_PAGE_WIDTH   33.110236
+#define A0_PAGE_HEIGHT  46.811023
 
 /* Standard A1 */
-#define A1_PAGE_WIDTH   23.375
-#define A1_PAGE_HEIGHT  33.125
+#define A1_PAGE_WIDTH   23.385826
+#define A1_PAGE_HEIGHT  33.110236
 
 /* Standard A2 */
-#define A2_PAGE_WIDTH   16.5
-#define A2_PAGE_HEIGHT  23.375
+#define A2_PAGE_WIDTH   16.535433
+#define A2_PAGE_HEIGHT  23.385826
 
 /* Standard A3 */
-#define A3_PAGE_WIDTH   11.75
-#define A3_PAGE_HEIGHT  16.5
+#define A3_PAGE_WIDTH   11.692913
+#define A3_PAGE_HEIGHT  16.535433
 
 /* Standard A4 */
-#define A4_PAGE_WIDTH   8.25
-#define A4_PAGE_HEIGHT  11.75
+#define A4_PAGE_WIDTH   8.267716
+#define A4_PAGE_HEIGHT  11.692913
 
 /* Standard B4 */
-#define B4_PAGE_WIDTH   9.875
-#define B4_PAGE_HEIGHT  13.875
+#define B4_PAGE_WIDTH   9.8425197
+#define B4_PAGE_HEIGHT  13.897637
 
 #endif /*EMU_PLAT_FALLTHROUGH_H*/
diff --git a/src/printer/prt_escp.c b/src/printer/prt_escp.c
index ad8d2745b..7164ec835 100644
--- a/src/printer/prt_escp.c
+++ b/src/printer/prt_escp.c
@@ -542,7 +542,7 @@ init_codepage(escp_t *dev, uint16_t num)
 static void
 reset_printer(escp_t *dev)
 {
-    dev->top_margin = dev->left_margin = 0.0;
+    dev->top_margin = dev->left_margin = 1.0 / 36.0;
     dev->right_margin         = dev->page_width;
     switch (dev->paper_size) {
         case PAPER_A4:
@@ -558,7 +558,7 @@ reset_printer(escp_t *dev)
         default:
             dev->page_height = LETTER_PAGE_HEIGHT;
     }
-    dev->bottom_margin = dev->page_height;
+    dev->bottom_margin = dev->page_height - 1.0 / 36.0;
     /* TODO: these should be configurable. */
     dev->color  = COLOR_BLACK;
     dev->curr_x = dev->curr_y = 0.0;