The context removal on Fl_Gl_Window::handle() destroyed the GL colors when the window
is remapped.
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In summary, if you measured the string *before* the selected font had been used to actually fl_draw() anything, the measurement returned was invalid, as the new font was not "locked in" to the gc.
This change makes sure the selected font is set in the gc before making the measurement.
In tests, this appears to work correctly now...
More opinions welcomed!
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This might not be correct (though I think it is) but should be no worse than the current mess I made...
Please test with as many different win32/64 compilers as possible and let me know!
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FL_ROUND_DOWN_BOX) on Linux (STR #2615). This was done by
(a) setting the line width in the box drawing function (was undefined, maybe 0)
(b) taking care of zero and negative line width in X11 clipping functions.
Both solutions would have solved the particular problem individually.
Additionally made local helper function fl_arc_i() in src/fl_round_box.cxx
static to avoid name clashes.
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It was hard coded to cover the range 0 to 0xFFFF, i.e. the
Basic multilingual plane, even though the demo code allowed
any start index, for any plane, to be entered on the CLI...
As a result, attempts to view supplemental planes were always
just folded back into the BMP.
This change makes the code display the 64K Unicode points
starting at the index given on the CLI, so that the
supplemental planes *can* now be viewed and tested.
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The new code makes the STR #2598 changes unix-specific so it does not
interact with the WIN32 platform.
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non-active_r() widgets"). This must be investigated further, and if necessary,
solved differently. STR #2420 will be reopened...
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are implemented as compiler macros and can only be edited manually to test
different implementation details.
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Fl_Paged_Device::print_window() where the window didn't redraw well in some
cases after printing.
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The win32 text-extents stuff now seems to be handling surrogate pairs correctly,
at least in my testing harness, and with a variety of supplementary plane fonts.
I really will leave this alone now - unless anyone finds bugs of course!
I have tested for regressions and it seems to be fine AFAICT.
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if (winclass != kHelpWindowClass)
is now replaced in Fl_cocoa.mm by its exact equivalent:
if ( w->border() || (!w->modal() && !w->tooltip_window()) )
so that tooltip windows are handled as in carbon.
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workaround for text_extents being measured on glyphs from
supplementary Unicode planes.
It has no effect on glyphs from the Basic plane, so should not
be visible at all to most code.
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badly formed UTF8 strings.
This probably is not the best solution, but it
does work.
Note that the problem actually seems to be in
setting the window title, and indeed if you try to
label ANY window with a badly formed UTF8 string
(not just a tooltip) you get the same exception
thrown.
NOTE: I'm not even sure why we try to set the
window title in tooltips, as it is never used
and the tooltip label itlsef still works fine.
Anyway, we can do something better, but this will
work for now.
Aside: If you close an app on OSX whilst a tooltip
is visible, the app will not exit, as there is still
a window open (the tooltip) but no way to cancel
the tooltip.
Don't know if this is OSX specific or not though
but it is certainly a bug.
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I found some kind of weird interaction with some symbol fonts that
covered the supplementary planes that meant we could not measure
the width correctly (although we did measure the text extents correctly.)
This mod mirrors what we do for non-surrogate-pair glyphs more
closely and appears to do the Righ Thing now, at least for the test fonts that I have, and which were exhibiting the aberrant behaviour before.
I don't think I have broken anything else in the meantime!
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