|
|
|
|
/*
|
|
|
|
|
This file is part of Magnum.
|
|
|
|
|
|
|
|
|
|
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
|
|
|
|
|
2020, 2021, 2022, 2023, 2024
|
|
|
|
|
Vladimír Vondruš <mosra@centrum.cz>
|
|
|
|
|
|
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a
|
|
|
|
|
copy of this software and associated documentation files (the "Software"),
|
|
|
|
|
to deal in the Software without restriction, including without limitation
|
|
|
|
|
the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
|
|
|
and/or sell copies of the Software, and to permit persons to whom the
|
|
|
|
|
Software is furnished to do so, subject to the following conditions:
|
|
|
|
|
|
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
|
|
|
in all copies or substantial portions of the Software.
|
|
|
|
|
|
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
|
|
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
|
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
|
|
|
DEALINGS IN THE SOFTWARE.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* In order to have the CORRADE_PLUGIN_REGISTER() macro not a no-op. Doesn't
|
|
|
|
|
affect anything else. */
|
|
|
|
|
#define CORRADE_STATIC_PLUGIN
|
|
|
|
|
|
|
|
|
|
#include <string>
|
|
|
|
|
#include <unordered_map>
|
|
|
|
|
#include <Corrade/Containers/Array.h>
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
#include <Corrade/Containers/GrowableArray.h>
|
|
|
|
|
#include <Corrade/Containers/Optional.h>
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include <Corrade/Containers/StridedArrayView.h>
|
|
|
|
|
#include <Corrade/Containers/StringView.h>
|
|
|
|
|
#include <Corrade/Containers/StringStl.h> /** @todo remove once file callbacks are <string>-free */
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include <Corrade/Containers/Triple.h>
|
|
|
|
|
#include <Corrade/PluginManager/Manager.h>
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include <Corrade/Utility/Algorithms.h>
|
|
|
|
|
#include <Corrade/Utility/Path.h>
|
|
|
|
|
#include <Corrade/Utility/Resource.h>
|
|
|
|
|
|
|
|
|
|
#include "Magnum/FileCallback.h"
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include "Magnum/ImageView.h"
|
|
|
|
|
#include "Magnum/PixelFormat.h"
|
|
|
|
|
#include "Magnum/Math/Color.h"
|
|
|
|
|
#include "Magnum/Math/Matrix3.h"
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include "Magnum/Math/Range.h"
|
|
|
|
|
#include "Magnum/Text/AbstractFont.h"
|
|
|
|
|
#include "Magnum/Text/AbstractFontConverter.h"
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include "Magnum/Text/AbstractGlyphCache.h"
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
#include "Magnum/Text/AbstractShaper.h"
|
|
|
|
|
#include "Magnum/Text/Direction.h"
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
#include "Magnum/Text/Feature.h"
|
|
|
|
|
#include "Magnum/Text/Script.h"
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
#include "Magnum/TextureTools/Atlas.h"
|
|
|
|
|
|
|
|
|
|
#define DOXYGEN_ELLIPSIS(...) __VA_ARGS__
|
|
|
|
|
|
|
|
|
|
using namespace Magnum;
|
|
|
|
|
using namespace Magnum::Math::Literals;
|
|
|
|
|
|
|
|
|
|
namespace MyNamespace {
|
|
|
|
|
|
|
|
|
|
struct MyFont: Text::AbstractFont {
|
|
|
|
|
explicit MyFont(PluginManager::AbstractManager& manager, Containers::StringView plugin): Text::AbstractFont{manager, plugin} {}
|
|
|
|
|
|
|
|
|
|
Text::FontFeatures doFeatures() const override { return {}; }
|
|
|
|
|
bool doIsOpened() const override { return false; }
|
|
|
|
|
void doClose() override {}
|
|
|
|
|
void doGlyphIdsInto(const Containers::StridedArrayView1D<const char32_t>&, const Containers::StridedArrayView1D<UnsignedInt>&) override {}
|
|
|
|
|
Vector2 doGlyphSize(UnsignedInt) override { return {}; }
|
|
|
|
|
Vector2 doGlyphAdvance(UnsignedInt) override { return {}; }
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
Containers::Pointer<Text::AbstractShaper> doCreateShaper() override { return nullptr; }
|
|
|
|
|
};
|
|
|
|
|
struct MyFontConverter: Text::AbstractFontConverter {
|
|
|
|
|
explicit MyFontConverter(PluginManager::AbstractManager& manager, Containers::StringView plugin): Text::AbstractFontConverter{manager, plugin} {}
|
|
|
|
|
|
|
|
|
|
Text::FontConverterFeatures doFeatures() const override { return {}; }
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* [MAGNUM_TEXT_ABSTRACTFONT_PLUGIN_INTERFACE] */
|
|
|
|
|
CORRADE_PLUGIN_REGISTER(MyFont, MyNamespace::MyFont,
|
|
|
|
|
MAGNUM_TEXT_ABSTRACTFONT_PLUGIN_INTERFACE)
|
|
|
|
|
/* [MAGNUM_TEXT_ABSTRACTFONT_PLUGIN_INTERFACE] */
|
|
|
|
|
|
|
|
|
|
/* [MAGNUM_TEXT_ABSTRACTFONTCONVERTER_PLUGIN_INTERFACE] */
|
|
|
|
|
CORRADE_PLUGIN_REGISTER(MyFontConverter, MyNamespace::MyFontConverter,
|
|
|
|
|
MAGNUM_TEXT_ABSTRACTFONTCONVERTER_PLUGIN_INTERFACE)
|
|
|
|
|
/* [MAGNUM_TEXT_ABSTRACTFONTCONVERTER_PLUGIN_INTERFACE] */
|
|
|
|
|
|
|
|
|
|
/* Make sure the name doesn't conflict with any other snippets to avoid linker
|
|
|
|
|
warnings, unlike with `int main()` there now has to be a declaration to
|
|
|
|
|
avoid -Wmisssing-prototypes */
|
|
|
|
|
void mainText();
|
|
|
|
|
void mainText() {
|
|
|
|
|
{
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font =
|
|
|
|
|
manager.loadAndInstantiate("StbTrueTypeFont");
|
|
|
|
|
/* [AbstractFont-usage-data] */
|
|
|
|
|
Utility::Resource rs{"data"};
|
|
|
|
|
Containers::ArrayView<const char> data = rs.getRaw("font.ttf");
|
|
|
|
|
if(!font->openData(data, 12.0f))
|
|
|
|
|
Fatal{} << "Can't open font data with StbTrueTypeFont";
|
|
|
|
|
/* [AbstractFont-usage-data] */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#if defined(CORRADE_TARGET_UNIX) || (defined(CORRADE_TARGET_WINDOWS) && !defined(CORRADE_TARGET_WINDOWS_RT))
|
|
|
|
|
{
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = manager.loadAndInstantiate("SomethingWhatever");
|
|
|
|
|
/* [AbstractFont-usage-callbacks] */
|
|
|
|
|
struct Data {
|
|
|
|
|
std::unordered_map<std::string, Containers::Optional<
|
|
|
|
|
Containers::Array<const char, Utility::Path::MapDeleter>>> files;
|
|
|
|
|
} data;
|
|
|
|
|
|
|
|
|
|
font->setFileCallback([](const std::string& filename,
|
|
|
|
|
InputFileCallbackPolicy policy, Data& data)
|
|
|
|
|
-> Containers::Optional<Containers::ArrayView<const char>>
|
|
|
|
|
{
|
|
|
|
|
auto found = data.files.find(filename);
|
|
|
|
|
|
|
|
|
|
/* Discard the memory mapping, if not needed anymore */
|
|
|
|
|
if(policy == InputFileCallbackPolicy::Close) {
|
|
|
|
|
if(found != data.files.end()) data.files.erase(found);
|
|
|
|
|
return {};
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Load if not there yet. If the mapping fails, remember that to not
|
|
|
|
|
attempt to load the same file again next time. */
|
|
|
|
|
if(found == data.files.end()) found = data.files.emplace(
|
|
|
|
|
filename, Utility::Path::mapRead(filename)).first;
|
|
|
|
|
|
|
|
|
|
if(!found->second) return {};
|
|
|
|
|
return Containers::arrayView(*found->second);
|
|
|
|
|
}, data);
|
|
|
|
|
|
|
|
|
|
font->openFile("magnum-font.conf", 13.0f);
|
|
|
|
|
/* [AbstractFont-usage-callbacks] */
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = manager.loadAndInstantiate("SomethingWhatever");
|
|
|
|
|
/* [AbstractFont-setFileCallback] */
|
|
|
|
|
font->setFileCallback([](const std::string& filename,
|
|
|
|
|
InputFileCallbackPolicy, void*) {
|
|
|
|
|
Utility::Resource rs{"data"};
|
|
|
|
|
return Containers::optional(rs.getRaw(filename));
|
|
|
|
|
});
|
|
|
|
|
/* [AbstractFont-setFileCallback] */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = manager.loadAndInstantiate("SomethingWhatever");
|
|
|
|
|
/* [AbstractFont-setFileCallback-template] */
|
|
|
|
|
const Utility::Resource rs{"data"};
|
|
|
|
|
font->setFileCallback([](const std::string& filename,
|
|
|
|
|
InputFileCallbackPolicy, const Utility::Resource& rs) {
|
|
|
|
|
return Containers::optional(rs.getRaw(filename));
|
|
|
|
|
}, rs);
|
|
|
|
|
/* [AbstractFont-setFileCallback-template] */
|
|
|
|
|
}
|
|
|
|
|
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
{
|
|
|
|
|
struct: Text::AbstractGlyphCache {
|
|
|
|
|
using Text::AbstractGlyphCache::AbstractGlyphCache;
|
|
|
|
|
|
|
|
|
|
Text::GlyphCacheFeatures doFeatures() const override { return {}; }
|
|
|
|
|
} cache{PixelFormat::R8Unorm, Vector2i{256}};
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
/* [AbstractGlyphCache-filling-images] */
|
|
|
|
|
Containers::ArrayView<const ImageView2D> images = DOXYGEN_ELLIPSIS({});
|
|
|
|
|
/* [AbstractGlyphCache-filling-images] */
|
|
|
|
|
|
|
|
|
|
/* [AbstractGlyphCache-filling-font] */
|
|
|
|
|
UnsignedInt fontId = cache.addFont(images.size());
|
|
|
|
|
/* [AbstractGlyphCache-filling-font] */
|
|
|
|
|
|
|
|
|
|
/* [AbstractGlyphCache-filling-atlas] */
|
|
|
|
|
Containers::Array<Vector2i> offsets{NoInit, images.size()};
|
|
|
|
|
|
|
|
|
|
cache.atlas().clearFlags(
|
|
|
|
|
TextureTools::AtlasLandfillFlag::RotatePortrait|
|
|
|
|
|
TextureTools::AtlasLandfillFlag::RotateLandscape);
|
|
|
|
|
CORRADE_INTERNAL_ASSERT(cache.atlas().add(
|
|
|
|
|
stridedArrayView(images).slice(&ImageView2D::size),
|
|
|
|
|
offsets));
|
|
|
|
|
/* [AbstractGlyphCache-filling-atlas] */
|
|
|
|
|
|
|
|
|
|
/* [AbstractGlyphCache-filling-glyphs] */
|
|
|
|
|
/* The glyph cache is just 2D, so copying to the first slice */
|
|
|
|
|
Containers::StridedArrayView3D<char> dst = cache.image().pixels()[0];
|
|
|
|
|
Range2Di updated;
|
|
|
|
|
for(UnsignedInt i = 0; i != images.size(); ++i) {
|
|
|
|
|
Range2Di rectangle = Range2Di::fromSize(offsets[i], images[i].size());
|
|
|
|
|
cache.addGlyph(fontId, i, {}, rectangle);
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
|
|
|
|
|
/* Copy assuming all input images have the same pixel format */
|
|
|
|
|
Containers::StridedArrayView3D<const char> src = images[i].pixels();
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
Utility::copy(src, dst.sliceSize({
|
|
|
|
|
std::size_t(offsets[i].y()),
|
|
|
|
|
std::size_t(offsets[i].x()),
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
0}, src.size()));
|
|
|
|
|
|
|
|
|
|
/* Maintain a range that was updated in the glyph cache */
|
|
|
|
|
updated = Math::join(updated, rectangle);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Reflect the image data update to the actual GPU-side texture */
|
|
|
|
|
cache.flushImage(updated);
|
|
|
|
|
/* [AbstractGlyphCache-filling-glyphs] */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
struct: Text::AbstractGlyphCache {
|
|
|
|
|
using Text::AbstractGlyphCache::AbstractGlyphCache;
|
|
|
|
|
|
|
|
|
|
Text::GlyphCacheFeatures doFeatures() const override { return {}; }
|
|
|
|
|
} cacheInstance{PixelFormat::R8Unorm, Vector2i{256}};
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
/* [AbstractGlyphCache-querying] */
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = DOXYGEN_ELLIPSIS({});
|
|
|
|
|
Text::AbstractGlyphCache& cache = DOXYGEN_ELLIPSIS(cacheInstance);
|
|
|
|
|
|
|
|
|
|
Containers::ArrayView<const UnsignedInt> fontGlyphIds = DOXYGEN_ELLIPSIS({});
|
|
|
|
|
|
|
|
|
|
Containers::Optional<UnsignedInt> fontId = cache.findFont(*font);
|
Text: rework AbstractGlyphCache for better flexibility and efficiency.
The class now supports incremental filling, multiple fonts, texture
arrays, removes all reliance on STL containers and is finally properly
documented.
To avoid complete breakage of every use, as much as possible was kept as
deprecated APIs -- in particular the reserve() with the nasty
std::vectors, the insert() that assumes a 2D cache and a single font
and textureSize() that returns a 2D vector. Those behave the same as
before, but will assert if the cache is an array or contains more than
one font.
On the other hand, begin() / end() access with std::unordered_map iterators
(ew!) was removed as the internals simply aren't a hashmap anymore. The
image() that returned an Image2D is now used to fill the glyph cache
instead of querying its potentially processed contents, and returns a
MutableImageView3D. I considered keeping it and adding sourceImage()
instead, but such naming turned out to be too inconsistent. For querying
processed image data (such as with the distance field cache) there's a
new processedImage() query, guarded by new GlyphCacheFeature bits -- if
both ImageProcessing and ProcessedImageDownload is set, it can be used
to retrieve the processed image (so, similar as ImageDownload was
before), and if neither is set, the cache contents are queryable
directly through image(), without needing any special support from
the GPU API.
Existing code is updated only in the minimal way possible to ensure that
no serious breakage was introduced by reimplementing the deprecated APIs
on top of the new backend. Porting away from deprecated APIs will be
done in next commits. The GlyphCache and DistanceFieldGlyphCache have
their public API kept intact for now, as a similar rework will be needed
for them as well.
Additionally, the MagnumFont and MagnumFontConverter plugins aren't
compiling yet as they require substantial changes to deal with the new
glyph cache features. That is not the case with other plugins in the
magnum-plugins repository tho, for those the backwards compatibility
"just works". On the other hand, since layout of the AbstractGlyphChange
changed, I'm bumping the AbstractFont plugin interface version to
force-trigger a rebuild of dependent projects. Because I ran a stale
magnum-player binary, it worked without crashing or GL errors but just
didn't show ANY text whatsoever due to ABI differences, and I wasted
some precious minutes before realizing that a simple rebuild would fix
it.
3 years ago
|
|
|
DOXYGEN_ELLIPSIS()
|
|
|
|
|
for(std::size_t i = 0; i != fontGlyphIds.size(); ++i) {
|
|
|
|
|
Containers::Triple<Vector2i, Int, Range2Di> glyph =
|
|
|
|
|
cache.glyph(*fontId, fontGlyphIds[i]);
|
|
|
|
|
DOXYGEN_ELLIPSIS(static_cast<void>(glyph);)
|
|
|
|
|
}
|
|
|
|
|
/* [AbstractGlyphCache-querying] */
|
|
|
|
|
|
|
|
|
|
/* [AbstractGlyphCache-querying-batch] */
|
|
|
|
|
Containers::Array<UnsignedInt> glyphIds{NoInit, fontGlyphIds.size()};
|
|
|
|
|
cache.glyphIdsInto(*fontId, fontGlyphIds, glyphIds);
|
|
|
|
|
|
|
|
|
|
Containers::StridedArrayView1D<const Vector2i> offsets = cache.glyphOffsets();
|
|
|
|
|
Containers::StridedArrayView1D<const Range2Di> rects = cache.glyphRectangles();
|
|
|
|
|
for(std::size_t i = 0; i != fontGlyphIds.size(); ++i) {
|
|
|
|
|
Vector2i offset = offsets[glyphIds[i]];
|
|
|
|
|
Range2Di rectangle = rects[glyphIds[i]];
|
|
|
|
|
DOXYGEN_ELLIPSIS(static_cast<void>(offset); static_cast<void>(rectangle);)
|
|
|
|
|
}
|
|
|
|
|
/* [AbstractGlyphCache-querying-batch] */
|
|
|
|
|
}
|
|
|
|
|
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
{
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
/* [AbstractShaper-shape] */
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = DOXYGEN_ELLIPSIS(manager.loadAndInstantiate("SomethingWhatever"));
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
Containers::Pointer<Text::AbstractShaper> shaper = font->createShaper();
|
|
|
|
|
|
|
|
|
|
/* Set text properties and shape it */
|
|
|
|
|
shaper->setScript(Text::Script::Latin);
|
|
|
|
|
shaper->setDirection(Text::ShapeDirection::LeftToRight);
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
shaper->setLanguage("en");
|
|
|
|
|
shaper->shape("Hello, world!");
|
|
|
|
|
|
|
|
|
|
/* Get the glyph info back */
|
|
|
|
|
struct GlyphInfo {
|
|
|
|
|
UnsignedInt id;
|
|
|
|
|
Vector2 offset;
|
|
|
|
|
Vector2 advance;
|
|
|
|
|
};
|
|
|
|
|
Containers::Array<GlyphInfo> glyphs{NoInit, shaper->glyphCount()};
|
|
|
|
|
shaper->glyphIdsInto(
|
|
|
|
|
stridedArrayView(glyphs).slice(&GlyphInfo::id));
|
|
|
|
|
shaper->glyphOffsetsAdvancesInto(
|
|
|
|
|
stridedArrayView(glyphs).slice(&GlyphInfo::offset),
|
|
|
|
|
stridedArrayView(glyphs).slice(&GlyphInfo::advance));
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
/* [AbstractShaper-shape] */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = manager.loadAndInstantiate("SomethingWhatever");
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
Containers::Pointer<Text::AbstractShaper> shaper = font->createShaper();
|
|
|
|
|
/* [AbstractShaper-shape-features] */
|
|
|
|
|
shaper->shape("Hello, world!", {
|
|
|
|
|
{Text::Feature::SmallCapitals, 7, 12}
|
|
|
|
|
});
|
|
|
|
|
/* [AbstractShaper-shape-features] */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
struct GlyphInfo {
|
|
|
|
|
UnsignedInt id;
|
|
|
|
|
Vector2 offset;
|
|
|
|
|
Vector2 advance;
|
|
|
|
|
};
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
/* [AbstractShaper-shape-multiple] */
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = DOXYGEN_ELLIPSIS(manager.loadAndInstantiate("SomethingWhatever"));
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> boldFont = DOXYGEN_ELLIPSIS(manager.loadAndInstantiate("SomethingWhatever"));
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
Containers::Pointer<Text::AbstractShaper> shaper = font->createShaper();
|
|
|
|
|
Containers::Pointer<Text::AbstractShaper> boldShaper = boldFont->createShaper();
|
|
|
|
|
DOXYGEN_ELLIPSIS()
|
|
|
|
|
|
|
|
|
|
Containers::Array<GlyphInfo> glyphs;
|
|
|
|
|
|
|
|
|
|
/* Shape "Hello, " with a regular font */
|
|
|
|
|
shaper->shape("Hello, world!", 0, 7);
|
|
|
|
|
Containers::StridedArrayView1D<GlyphInfo> glyphs1 =
|
|
|
|
|
arrayAppend(glyphs, NoInit, shaper->glyphCount());
|
|
|
|
|
shaper->glyphIdsInto(
|
|
|
|
|
glyphs1.slice(&GlyphInfo::id));
|
|
|
|
|
shaper->glyphOffsetsAdvancesInto(
|
|
|
|
|
glyphs1.slice(&GlyphInfo::offset),
|
|
|
|
|
glyphs1.slice(&GlyphInfo::advance));
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
|
|
|
|
|
/* Append "world" shaped with a bold font */
|
|
|
|
|
boldShaper->shape("Hello, world!", 7, 12);
|
|
|
|
|
Containers::StridedArrayView1D<GlyphInfo> glyphs2 =
|
|
|
|
|
arrayAppend(glyphs, NoInit, boldShaper->glyphCount());
|
|
|
|
|
shaper->glyphIdsInto(
|
|
|
|
|
glyphs2.slice(&GlyphInfo::id));
|
|
|
|
|
shaper->glyphOffsetsAdvancesInto(
|
|
|
|
|
glyphs2.slice(&GlyphInfo::offset),
|
|
|
|
|
glyphs2.slice(&GlyphInfo::advance));
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
|
|
|
|
|
/* Finally shape "!" with a regular font again */
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
shaper->shape("Hello, world!", 12, 13);
|
|
|
|
|
Containers::StridedArrayView1D<GlyphInfo> glyphs3 =
|
|
|
|
|
arrayAppend(glyphs, NoInit, shaper->glyphCount());
|
|
|
|
|
shaper->glyphIdsInto(
|
|
|
|
|
glyphs3.slice(&GlyphInfo::id));
|
|
|
|
|
shaper->glyphOffsetsAdvancesInto(
|
|
|
|
|
glyphs3.slice(&GlyphInfo::offset),
|
|
|
|
|
glyphs3.slice(&GlyphInfo::advance));
|
Text: new AbstractShaper interface for shaping.
Replaces the previous, grossly inefficient AbstractLayouter which was
performing one virtual call per glyph (!). It's now also reusable,
meaning it doesn't need to be allocated anew for every new shaped text,
and it no longer requires each and every font plugin to implement the
same redundant glyph data fetching from the glyph cache, scaling etc. --
all that is meant to be done by the users of AbstractShaper, i.e.
Renderer. The independency on a glyph cache theorerically also means it
can be used for a completely different, non-texture-based way to render
text (such as direct path drawing directly on the GPU), although I won't
be exploring that path now.
It also exposes an interface for specifying script, language,
direction and typographic features. Such interface will be currently
only implemented in HarfBuzz, but that's the intent -- to provide a
flexible enough interface to support all possible use cases that a font
or a font plugin may support, instead of exposing a least common
denominator and then having no easy way to shape a text in a non-Latin
script or use a fancy OpenType feature the chosen font has.
The old public interface is preserved for backwards compatibility,
marked as deprecated, however the virtual APIs are not, as supporting
that would be too nasty. I don't think any user code ever implemented a
font plugin so this should be okay.
To ensure smooth transition with no regressions, the Renderer class and
MagnumFont tests still use the old API in this commit, and their test
pass the same way as they did before (except for two removed MagnumFont
test cases which tested errors that are now an assertion in the
deprecated layout() API and thus cannot be tested from the plugin
anymore). Porting them away from the deprecated API will be done in
separate commits.
3 years ago
|
|
|
/* [AbstractShaper-shape-multiple] */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
/* -Wnonnull in GCC 11+ "helpfully" says "this is null" if I don't initialize
|
|
|
|
|
the font pointer. I don't care, I just want you to check compilation errors,
|
|
|
|
|
not more! */
|
|
|
|
|
PluginManager::Manager<Text::AbstractFont> manager;
|
|
|
|
|
Containers::Pointer<Text::AbstractFont> font = manager.loadAndInstantiate("SomethingWhatever");
|
|
|
|
|
Containers::Pointer<Text::AbstractShaper> shaper = font->createShaper();
|
|
|
|
|
/* [AbstractShaper-shape-clusters] */
|
|
|
|
|
Containers::StringView text = DOXYGEN_ELLIPSIS({});
|
|
|
|
|
|
|
|
|
|
shaper->shape(text);
|
|
|
|
|
DOXYGEN_ELLIPSIS()
|
|
|
|
|
|
|
|
|
|
Containers::Array<UnsignedInt> clusters{NoInit, shaper->glyphCount()};
|
|
|
|
|
shaper->glyphClustersInto(clusters);
|
|
|
|
|
|
|
|
|
|
Containers::StringView selection = text.slice(clusters[2], clusters[5]);
|
|
|
|
|
/* [AbstractShaper-shape-clusters] */
|
|
|
|
|
static_cast<void>(selection);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
