Quick fix for system info text always being scrolled out of view when loaded for the first time

Added an API method to Text datablocks for moving the cursor to a specific line in the
file. This makes it possible to reset the cursor position at the end of the sysinfo
operator.

2 files changed, 24 insertions, 1 deletions

diff --git a/release/scripts/modules/sys_info.py b/release/scripts/modules/sys_info.py
index 1785ab59a5f..f284ba475e3 100644
--- a/release/scripts/modules/sys_info.py
+++ b/release/scripts/modules/sys_info.py
@@ -163,4 +163,7 @@ def write_sysinfo(op):
         for l in glext:
             output.write("\t\t%r\n" % (l))
 
+    # Back to first line, so everything is still in sight
+    output.jump(1)
+
     op.report({'INFO'}, "System information generated in 'system-info.txt'")
diff --git a/source/blender/makesrna/intern/rna_text_api.c b/source/blender/makesrna/intern/rna_text_api.c
index de398bc10a6..4d88430fab0 100644
--- a/source/blender/makesrna/intern/rna_text_api.c
+++ b/source/blender/makesrna/intern/rna_text_api.c
@@ -50,6 +50,20 @@ static void rna_Text_write(Text *text, const char *str)
 	WM_main_add_notifier(NC_TEXT | NA_EDITED, text);
 }
 
+static void rna_Text_jump(Text *text, int line)
+{
+	short nlines = txt_get_span(text->lines.first, text->lines.last) + 1;
+	
+	if (line < 1)
+		txt_move_toline(text, 1, 0);
+	else if (line > nlines)
+		txt_move_toline(text, nlines - 1, 0);
+	else
+		txt_move_toline(text, line - 1, 0);
+		
+	WM_main_add_notifier(NC_TEXT | ND_CURSOR, text);
+}
+
 #else
 
 void RNA_api_text(StructRNA *srna)
@@ -61,9 +75,15 @@ void RNA_api_text(StructRNA *srna)
 	RNA_def_function_ui_description(func, "clear the text block");
 
 	func = RNA_def_function(srna, "write", "rna_Text_write");
-	RNA_def_function_ui_description(func, "write text at the cursor location and advance to the end of the text block");
+	RNA_def_function_ui_description(func, "Write text at the cursor location and advance to the end of the text block");
 	prop = RNA_def_string(func, "text", "Text", 0, "", "New text for this datablock");
 	RNA_def_property_flag(prop, PROP_REQUIRED);
+	
+	func = RNA_def_function(srna, "jump", "rna_Text_jump");
+	RNA_def_function_ui_description(func, "Move cursor location to the start of the specified line");
+	prop = RNA_def_int(func, "line_number", 1, 1, INT_MAX, "Line", "Line number to jump to", 1, 10000);
+	RNA_def_property_flag(prop, PROP_REQUIRED);
+	/* TODO: include optional parameter for character on line to jump to? */
 }
 
 #endif