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further work on updatescrollbar
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2178 a592a061-630c-0410-9148-cb99ea01b6c8
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@ -380,35 +380,29 @@ void BufferView::Pimpl::updateScrollbar()
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return;
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}
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static unsigned long text_height;
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static unsigned long work_height;
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unsigned long const text_height = bv_->text->height;
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unsigned long const tmp_text_height = bv_->text->height;
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long const tmp_scrollbar_value = bv_->text->first;
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// check if anything has changed.
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if (text_height == tmp_text_height
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&& work_height == workarea_.height()
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&& current_scrollbar_value == tmp_scrollbar_value)
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return; // no
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// update values
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text_height = tmp_text_height;
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work_height = workarea_.height();
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current_scrollbar_value = tmp_scrollbar_value;
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long const height_diff = text_height - work_height;
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if (height_diff <= 0) {
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workarea_.setScrollbar(0, 1.0);
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return;
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}
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workarea_.setScrollbarBounds(0, height_diff);
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double const lineh = bv_->text->defaultHeight();
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workarea_.setScrollbarIncrements(lineh);
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double const slider_size = 1.0 / (double(height_diff) + work_height);
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workarea_.setScrollbar(current_scrollbar_value, slider_size);
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double const slider_size = 1.0 / double(text_height);
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static long old_text_height;
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static double old_lineh;
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static double old_slider_size;
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if (text_height != old_text_height) {
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workarea_.setScrollbarBounds(0, text_height - workarea_.height());
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old_text_height = text_height;
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}
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if (lineh != old_lineh) {
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workarea_.setScrollbarIncrements(lineh);
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old_lineh = lineh;
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}
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if (current_scrollbar_value != bv_->text->first
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|| slider_size != old_slider_size) {
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current_scrollbar_value = bv_->text->first;
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workarea_.setScrollbar(current_scrollbar_value, slider_size);
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old_slider_size = slider_size;
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}
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}
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@ -1,3 +1,8 @@
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2001-07-04 Lars Gullik Bjønnes <larsbj@birdstep.com>
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* BufferView_pimpl.C (updateScrollbar): simplify further and
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hopefully make it a bit faster.
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2001-07-03 Jean-Marc Lasgouttes <Jean-Marc.Lasgouttes@inria.fr>
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* ColorHandler.C (LyXColorHandler): use GUIRunTime instead of
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