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The previous implementation was *extremely* expensive. It
relied on loading a binary JSON file from resources (which
involved decompressing it), then extracting information out of
it to build a gradient. Already-loaded gradients were kept in
a local cache, which had to be mutex protected.
Instead, this patch extends the gradient generator to build
static arrays filled with the web gradient data, sitting in
.rodata.
These arrays are used when building QGradient objects with a
web gradient. No explicit mutex protection is necessary, since
accesses will just read from the arrays.
As benefits, this patch removes:
* the binary json representation from QtGui's resources (~4KB
compressed, ~50KB uncompressed)
* the overhead of reading from the JSON for each used web
gradient;
* the startup costs of registering the webgradients in the
resources;
* all the overhead of mutex locking when building such
gradients;
* all the runtime memory allocations to load, parse and cache
the web gradients (including the memory + CPU spike on first
load due to the uncompression of the JSON data, as well as a
couple of deep copies).
Change-Id: If5c3d704430df76ce8faf55ee75ebd4639ba09c4
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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This makes it visible also in the overview documentation of the module,
and can be used to automatically generate attribution documents.
The code actually mentions the names and file versions (CVS?) where things
got copied from; however, X11 seems to have stopped using CVS a long time
ago, and without a server it's hard to determine the exact X11 version that
was copied from. It arguably doesn't matter, anyhow, because we won't update
the code anymore.
Fixes: QTBUG-70556
Change-Id: Ib17117a1a3c4112b81982afbd51273048a43221a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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Conflicts:
src/plugins/platforms/cocoa/qcocoawindow.mm
src/plugins/platforms/xcb/qxcbintegration.cpp
Conflicts git missed:
src/plugins/platforms/qnx/qqnxglcontext.cpp
Change-Id: I0582cdc9e66e43efe79038b9c43d4f9572ac88fc
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The copyright year of the qgrayraster.c dependency was incorrectly set
to “2006-2015”, instead of 2000-2016 (as stated in the file’s header
comments). This commit solves this issue.
Task-number: QTBUG-69261
Change-Id: I307b6eabdd133fe4f8371b963577b59af8620838
Reviewed-by: hjk <hjk@qt.io>
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Fix spurious comma added in commit c4a21708ed186640f4db381dc80.
Change-Id: I6d62378dfdda7a0da611eed1064cff707b9c6bf6
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Similar to Qt::GlobalColor, the presets allow the user to create
brushes based on predefined gradients, quickly getting pretty pixels
on screen.
The presets are based on the linear gradients from WebGradients, a
free collection of gradients, hosted at https://webgradients.com/.
The few radial and blended gradient presets have been excluded.
Change-Id: I1ce8f2210a6045c9edb8829ab3eddcc313549127
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Change-Id: I685d3964617e3984b938bd9aafa0626acd75656f
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
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qgrayraster_p.h, qgrayraster.cpp contain code from Freetype which
unfortunately cannot be excluded by e.g. '-no-freetype'. Document this
code therefore separately.
Change-Id: I20d79e984013b2aec874774ddc765b1dc57ebe0e
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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