1 #ifndef DALI_TOOLKIT_INTERNAL_TEXT_LABEL_H
2 #define DALI_TOOLKIT_INTERNAL_TEXT_LABEL_H
5 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/object/property-map.h>
25 #include <dali-toolkit/public-api/controls/control-impl.h>
26 #include <dali-toolkit/public-api/controls/text-controls/text-label.h>
27 #include <dali-toolkit/internal/text/text-control-interface.h>
28 #include <dali-toolkit/internal/text/text-controller.h>
29 #include <dali-toolkit/internal/text/text-scroller-interface.h>
30 #include <dali-toolkit/internal/text/rendering/text-renderer.h>
31 #include <dali-toolkit/internal/text/text-scroller.h>
32 #include <dali-toolkit/internal/visuals/text/text-visual.h>
45 * @brief A control which renders a short text string.
47 class TextLabel : public Control, public Text::ControlInterface, public Text::ScrollerInterface
52 * @copydoc Dali::Toollkit::TextLabel::New()
54 static Toolkit::TextLabel New();
59 * @brief Called when a property of an object of this type is set.
61 * @param[in] object The object whose property is set.
62 * @param[in] index The property index.
63 * @param[in] value The new property value.
65 static void SetProperty( BaseObject* object, Property::Index index, const Property::Value& value );
68 * @brief Called to retrieve a property of an object of this type.
70 * @param[in] object The object whose property is to be retrieved.
71 * @param[in] index The property index.
72 * @return The current value of the property.
74 static Property::Value GetProperty( BaseObject* object, Property::Index index );
76 Text::ControllerPtr getController();
78 private: // From Control
81 * @copydoc Control::OnInitialize()
83 virtual void OnInitialize() override ;
86 * @copydoc Control::OnStyleChange()
88 virtual void OnStyleChange( Toolkit::StyleManager styleManager, StyleChange::Type change ) override ;
91 * @copydoc Control::OnRelayout()
93 virtual void OnRelayout( const Vector2& size, RelayoutContainer& container ) override ;
96 * @copydoc Control::GetNaturalSize()
98 virtual Vector3 GetNaturalSize() override ;
101 * @copydoc Control::GetHeightForWidth()
103 virtual float GetHeightForWidth( float width ) override ;
106 * @copydoc Control::OnPropertySet()
108 virtual void OnPropertySet( Property::Index index, Property::Value propertyValue ) override ;
110 // From ControlInterface
113 * @copydoc Text::ControlInterface::RequestTextRelayout()
115 virtual void RequestTextRelayout() override ;
117 private: // from TextScroller
120 * @copydoc Text::ScrollerInterface::ScrollingFinished()
122 virtual void ScrollingFinished();
124 private: // Implementation
127 * Construct a new TextLabel.
132 * A reference counted object may only be deleted by calling Unreference()
134 virtual ~TextLabel();
138 // Undefined copy constructor and assignment operators
139 TextLabel(const TextLabel&);
140 TextLabel& operator=(const TextLabel& rhs);
143 * @brief Set up Autoscrolling
145 void SetUpAutoScrolling();
149 Text::ControllerPtr mController;
150 Text::TextScrollerPtr mTextScroller;
152 Toolkit::Visual::Base mVisual;
154 int mRenderingBackend;
155 bool mTextUpdateNeeded:1;
158 struct AccessibleImpl : public Control::AccessibleImpl,
159 public virtual Dali::Accessibility::Text
161 using Control::AccessibleImpl::AccessibleImpl;
163 std::string GetName() override;
164 std::string GetText( size_t startOffset, size_t endOffset ) override;
165 size_t GetCharacterCount() override;
166 Dali::Accessibility::Range
167 GetTextAtOffset( size_t offset,
168 Dali::Accessibility::TextBoundary boundary ) override;
169 Dali::Accessibility::Range GetSelection( size_t selectionNum ) override;
170 bool RemoveSelection( size_t selectionNum ) override;
171 bool SetSelection( size_t selectionNum, size_t startOffset,
172 size_t endOffset ) override;
176 } // namespace Internal
178 // Helpers for public-api forwarding methods
180 inline Toolkit::Internal::TextLabel& GetImpl( Toolkit::TextLabel& textLabel )
182 DALI_ASSERT_ALWAYS(textLabel);
184 Dali::RefObject& handle = textLabel.GetImplementation();
186 return static_cast<Toolkit::Internal::TextLabel&>(handle);
189 inline const Toolkit::Internal::TextLabel& GetImpl( const Toolkit::TextLabel& textLabel )
191 DALI_ASSERT_ALWAYS(textLabel);
193 const Dali::RefObject& handle = textLabel.GetImplementation();
195 return static_cast<const Toolkit::Internal::TextLabel&>(handle);
198 } // namespace Toolkit
202 #endif // DALI_TOOLKIT_INTERNAL_TEXT_LABEL_H