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To: vim-dev@vim.org
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Subject: patch 7.1.045
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Fcc: outbox
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From: Bram Moolenaar <Bram@moolenaar.net>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=ISO-8859-1
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Content-Transfer-Encoding: 8bit
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------------
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Patch 7.1.045
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Problem: Unnecessary screen redrawing. (Jjgod Jiang)
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Solution: Reset "must_redraw" after clearing the screen.
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Files: src/screen.c
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*** ../vim-7.1.044/src/screen.c Thu Jul 26 22:55:11 2007
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--- src/screen.c Mon Jul 30 21:39:32 2007
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***************
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*** 331,336 ****
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--- 331,341 ----
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{
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if (type < must_redraw) /* use maximal type */
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type = must_redraw;
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+
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+ /* must_redraw is reset here, so that when we run into some weird
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+ * reason to redraw while busy redrawing (e.g., asynchronous
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+ * scrolling), or update_topline() in win_update() will cause a
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+ * scroll, the screen will be redrawn later or in win_update(). */
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must_redraw = 0;
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}
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***************
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*** 1019,1024 ****
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--- 1024,1036 ----
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type = VALID;
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}
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+ /* Trick: we want to avoid clearning the screen twice. screenclear() will
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+ * set "screen_cleared" to TRUE. The special value MAYBE (which is still
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+ * non-zero and thus not FALSE) will indicate that screenclear() was not
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+ * called. */
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+ if (screen_cleared)
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+ screen_cleared = MAYBE;
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+
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/*
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* If there are no changes on the screen that require a complete redraw,
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* handle three cases:
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***************
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*** 1220,1226 ****
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mid_end = wp->w_height;
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if (lastwin == firstwin)
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{
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! screenclear();
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#ifdef FEAT_WINDOWS
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/* The screen was cleared, redraw the tab pages line. */
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if (redraw_tabline)
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--- 1232,1242 ----
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mid_end = wp->w_height;
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if (lastwin == firstwin)
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{
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! /* Clear the screen when it was not done by win_del_lines() or
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! * win_ins_lines() above, "screen_cleared" is FALSE or MAYBE
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! * then. */
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! if (screen_cleared != TRUE)
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! screenclear();
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#ifdef FEAT_WINDOWS
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/* The screen was cleared, redraw the tab pages line. */
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if (redraw_tabline)
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***************
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*** 1228,1233 ****
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--- 1244,1256 ----
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#endif
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}
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}
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+
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+ /* When win_del_lines() or win_ins_lines() caused the screen to be
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+ * cleared (only happens for the first window) or when screenclear()
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+ * was called directly above, "must_redraw" will have been set to
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+ * NOT_VALID, need to reset it here to avoid redrawing twice. */
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+ if (screen_cleared == TRUE)
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+ must_redraw = 0;
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}
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else
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{
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*** ../vim-7.1.044/src/version.c Sun Jul 29 15:02:34 2007
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--- src/version.c Mon Jul 30 21:58:06 2007
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***************
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*** 668,669 ****
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--- 668,671 ----
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{ /* Add new patch number below this line */
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+ /**/
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+ 45,
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/**/
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--
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Be thankful to be in a traffic jam, because it means you own a car.
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/// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
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/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
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\\\ download, build and distribute -- http://www.A-A-P.org ///
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\\\ help me help AIDS victims -- http://ICCF-Holland.org ///
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