skia2/modules/skottie/include/SkottieProperty.h
Florin Malita ad9110026b [skottie] Separate text resize options
The sk_vj text property (Skottie extension) is currently mixing
vertical alignment and resizing semantics into a single enum.  This
precludes certain valid combinations.

Split the resize options into a separate enum (ResizePolicy), and ensure
support for all combinations.

Before:

  "sk_vj": 0 -> Shaper::VAlign::kVisualTop
  "sk_vj": 1 -> Shaper::VAlign::kVisualCenter
  "sk_vj": 2 -> Shaper::VAlign::kVisualBottom
  "sk_vj": 3 -> Shaper::VAlign::kVisualResizeToFit
  "sk_vj": 4 -> Shaper::VAlign::kVisualDownscaleToFit


After:

  "sk_vj": 0 -> Shaper::VAlign::kVisualTop
  "sk_vj": 1 -> Shaper::VAlign::kVisualCenter
  "sk_vj": 2 -> Shaper::VAlign::kVisualBottom

  "sk_rs": 0 -> Shaper::ResizePolicy::kNone
  "sk_rs": 1 -> Shaper::ResizePolicy::kScaleToFit
  "sk_rs": 2 -> Shaper::ResizePolicy::kDownscaleToFit


Bug: skia:9809, skia:9810
Change-Id: I631ae1fa31a9bc9c6958bb480354138591d504ff
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/267040
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Isabel Ren <isabelren@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
2020-01-29 00:09:42 +00:00

127 lines
3.9 KiB
C++

/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkottieProperty_DEFINED
#define SkottieProperty_DEFINED
#include "include/core/SkColor.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkTypeface.h"
#include "include/utils/SkTextUtils.h"
#include "modules/skottie/src/text/SkottieShaper.h"
#include <functional>
class SkMatrix;
namespace sksg {
class Color;
class OpacityEffect;
} // namespace sksg
namespace skottie {
using ColorPropertyValue = SkColor;
using OpacityPropertyValue = float;
struct TextPropertyValue {
sk_sp<SkTypeface> fTypeface;
SkString fText;
float fTextSize = 0,
fStrokeWidth = 0,
fLineHeight = 0,
fAscent = 0;
SkTextUtils::Align fHAlign = SkTextUtils::kLeft_Align;
Shaper::VAlign fVAlign = Shaper::VAlign::kTop;
Shaper::ResizePolicy fResize = Shaper::ResizePolicy::kNone;
SkRect fBox = SkRect::MakeEmpty();
SkColor fFillColor = SK_ColorTRANSPARENT,
fStrokeColor = SK_ColorTRANSPARENT;
bool fHasFill = false,
fHasStroke = false;
bool operator==(const TextPropertyValue& other) const;
bool operator!=(const TextPropertyValue& other) const;
};
struct TransformPropertyValue {
SkPoint fAnchorPoint,
fPosition;
SkVector fScale;
SkScalar fRotation,
fSkew,
fSkewAxis;
bool operator==(const TransformPropertyValue& other) const;
bool operator!=(const TransformPropertyValue& other) const;
};
namespace internal { class AnimationBuilder; }
/**
* Property handles are adapters between user-facing AE model/values
* and the internal scene-graph representation.
*/
template <typename ValueT, typename NodeT>
class SK_API PropertyHandle final {
public:
explicit PropertyHandle(sk_sp<NodeT> node) : fNode(std::move(node)) {}
~PropertyHandle();
ValueT get() const;
void set(const ValueT&);
private:
const sk_sp<NodeT> fNode;
};
namespace internal {
class TextAdapter;
class TransformAdapter2D;
} // namespace internal
using ColorPropertyHandle = PropertyHandle<ColorPropertyValue,
sksg::Color>;
using OpacityPropertyHandle = PropertyHandle<OpacityPropertyValue,
sksg::OpacityEffect>;
using TextPropertyHandle = PropertyHandle<TextPropertyValue,
internal::TextAdapter>;
using TransformPropertyHandle = PropertyHandle<TransformPropertyValue,
internal::TransformAdapter2D>;
/**
* A PropertyObserver can be used to track and manipulate certain properties of "interesting"
* Lottie nodes.
*
* When registered with an animation builder, PropertyObserver receives notifications for
* various properties of layer and shape nodes. The |node_name| argument corresponds to the
* name ("nm") node property.
*/
class SK_API PropertyObserver : public SkRefCnt {
public:
template <typename T>
using LazyHandle = std::function<std::unique_ptr<T>()>;
virtual void onColorProperty (const char node_name[],
const LazyHandle<ColorPropertyHandle>&);
virtual void onOpacityProperty (const char node_name[],
const LazyHandle<OpacityPropertyHandle>&);
virtual void onTextProperty (const char node_name[],
const LazyHandle<TextPropertyHandle>&);
virtual void onTransformProperty(const char node_name[],
const LazyHandle<TransformPropertyHandle>&);
};
} // namespace skottie
#endif // SkottieProperty_DEFINED