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authorrubidium <rubidium@openttd.org>2007-03-23 22:20:39 +0000
committerrubidium <rubidium@openttd.org>2007-03-23 22:20:39 +0000
commit694c7fdf0fff4baeceeca3ab04cbc3e620ed4c18 (patch)
treef80c01c97ffdf6bcdc769651663acae47f9d9919 /src
parent68572f1076de258cc8ec26926d1e87503f6a9aae (diff)
downloadopenttd-694c7fdf0fff4baeceeca3ab04cbc3e620ed4c18.tar.xz
(svn r9420) -Fix [FS#701]: crashes when the chatbox would be drawn outside of the main window.
Diffstat (limited to 'src')
-rw-r--r--src/texteff.cpp41
1 files changed, 31 insertions, 10 deletions
diff --git a/src/texteff.cpp b/src/texteff.cpp
index 1831dcd76..98b0dfc42 100644
--- a/src/texteff.cpp
+++ b/src/texteff.cpp
@@ -145,15 +145,27 @@ void UndrawTextMessage()
}
}
+ int x = _textmsg_box.x;
+ int y = _screen.height - _textmsg_box.y - _textmsg_box.height;
+ int width = _textmsg_box.width;
+ int height = _textmsg_box.height;
+ if (y < 0) {
+ height = max(height + y, min(_textmsg_box.height, _screen.height));
+ y = 0;
+ }
+ if (x + width >= _screen.width) {
+ width = _screen.width - x;
+ }
+
_textmessage_visible = false;
/* Put our 'shot' back to the screen */
memcpy_pitch(
- _screen.dst_ptr + _textmsg_box.x + (_screen.height - _textmsg_box.y - _textmsg_box.height) * _screen.pitch,
+ _screen.dst_ptr + x + y * _screen.pitch,
_textmessage_backup,
- _textmsg_box.width, _textmsg_box.height, _textmsg_box.width, _screen.pitch);
+ width, height, _textmsg_box.width, _screen.pitch);
/* And make sure it is updated next time */
- _video_driver->make_dirty(_textmsg_box.x, _screen.height - _textmsg_box.y - _textmsg_box.height, _textmsg_box.width, _textmsg_box.height);
+ _video_driver->make_dirty(x, y, width, height);
_textmessage_dirty = true;
}
@@ -186,8 +198,6 @@ void TextMessageDailyLoop()
/* Draw the textmessage-box */
void DrawTextMessage()
{
- uint y, count;
-
if (!_textmessage_dirty) return;
/* First undraw if needed */
@@ -196,14 +206,25 @@ void DrawTextMessage()
if (_iconsole_mode == ICONSOLE_FULL) return;
/* Check if we have anything to draw at all */
- count = GetTextMessageCount();
+ uint count = GetTextMessageCount();
if (count == 0) return;
+ int x = _textmsg_box.x;
+ int y = _screen.height - _textmsg_box.y - _textmsg_box.height;
+ int width = _textmsg_box.width;
+ int height = _textmsg_box.height;
+ if (y < 0) {
+ height = max(height + y, min(_textmsg_box.height, _screen.height));
+ y = 0;
+ }
+ if (x + width >= _screen.width) {
+ width = _screen.width - x;
+ }
/* Make a copy of the screen as it is before painting (for undraw) */
memcpy_pitch(
_textmessage_backup,
- _screen.dst_ptr + _textmsg_box.x + (_screen.height - _textmsg_box.y - _textmsg_box.height) * _screen.pitch,
- _textmsg_box.width, _textmsg_box.height, _screen.pitch, _textmsg_box.width);
+ _screen.dst_ptr + x + y * _screen.pitch,
+ width, height, _screen.pitch, _textmsg_box.width);
_cur_dpi = &_screen; // switch to _screen painting
@@ -217,12 +238,12 @@ void DrawTextMessage()
);
/* Paint the messages starting with the lowest at the bottom */
- for (y = 13; count-- != 0; y += 13) {
+ for (uint y = 13; count-- != 0; y += 13) {
DoDrawString(_textmsg_list[count].message, _textmsg_box.x + 3, _screen.height - _textmsg_box.y - y + 1, _textmsg_list[count].color);
}
/* Make sure the data is updated next flush */
- _video_driver->make_dirty(_textmsg_box.x, _screen.height - _textmsg_box.y - _textmsg_box.height, _textmsg_box.width, _textmsg_box.height);
+ _video_driver->make_dirty(x, y, width, height);
_textmessage_visible = true;
_textmessage_dirty = false;