Truncate title when drawing multi-pages step

LedgerHQ · Feb 21, 2025 · 277e938 · 277e938
1 parent 61b4d94
commit 277e938
Showing 1 changed file with 21 additions and 1 deletion.
diff --git a/lib_nbgl/src/nbgl_step.c b/lib_nbgl/src/nbgl_step.c
@@ -282,11 +282,31 @@ static void displayTextPage(StepContext_t *ctx, uint8_t textPage)
             nbgl_layoutAddText(ctx->layout, ctx->textContext.txtStart, txt, ctx->textContext.style);
         }
         else {
-            SPRINTF(ctx->textContext.tmpString,
+            char intermediateString[36];  // a bit bigger but we know that one line cannot contain
+                                          // more than 23 chars
+            SPRINTF(intermediateString,
                     "%s (%d/%d)",
                     ctx->textContext.txtStart,
                     ctx->textContext.currentPage + 1,
                     ctx->textContext.nbPages);
+            // truncate title to fit in one line, if necessary
+            if (nbgl_getTextNbLinesInWidth(BAGL_FONT_OPEN_SANS_EXTRABOLD_11px_1bpp,
+                                           intermediateString,
+                                           AVAILABLE_WIDTH,
+                                           false)
+                > 1) {
+                nbgl_textReduceOnNbLines(BAGL_FONT_OPEN_SANS_EXTRABOLD_11px_1bpp,
+                                         intermediateString,
+                                         AVAILABLE_WIDTH,
+                                         1,
+                                         ctx->textContext.tmpString,
+                                         TMP_STRING_MAX_LEN);
+            }
+            else {
+                // simply copy
+                memcpy(ctx->textContext.tmpString, intermediateString, TMP_STRING_MAX_LEN - 1);
+                ctx->textContext.tmpString[TMP_STRING_MAX_LEN - 1] = 0;
+            }
             nbgl_layoutAddText(
                 ctx->layout, ctx->textContext.tmpString, txt, ctx->textContext.style);
         }