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Fl_Input_: improved draing and warping for large fonts

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6887 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Matthias Melcher 2009-09-19 20:57:48 +00:00
parent e0103d2dd7
commit 08dea80a5a
1 changed files with 5 additions and 4 deletions
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9
src/Fl_Input_.cxx
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@ -239,6 +239,7 @@ void Fl_Input_::drawtext(int X, int Y, int W, int H) {
// count how many lines and put the last one into the buffer:
// And figure out where the cursor is:
int height = fl_height();
int threshold = height/2;
int lines;
int curx, cury;
for (p=value(), curx=cury=lines=0; ;) {
@ -248,15 +249,15 @@ void Fl_Input_::drawtext(int X, int Y, int W, int H) {
if (Fl::focus()==this && !was_up_down) up_down_pos = curx;
cury = lines*height;
int newscroll = xscroll_;
if (curx > newscroll+W-20) {
if (curx > newscroll+W-threshold) {
// figure out scrolling so there is space after the cursor:
newscroll = curx+20-W;
newscroll = curx+threshold-W;
// figure out the furthest left we ever want to scroll:
int ex = int(expandpos(p, e, buf, 0))+2-W;
// use minimum of both amounts:
if (ex < newscroll) newscroll = ex;
} else if (curx < newscroll+20) {
newscroll = curx-20;
} else if (curx < newscroll+threshold) {
newscroll = curx-threshold;
}
if (newscroll < 0) newscroll = 0;
if (newscroll != xscroll_) {