2 * Copyright (c) 2018 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali-toolkit/internal/visuals/text/text-visual.h>
22 #include <dali/public-api/animation/constraints.h>
23 #include <dali/devel-api/rendering/renderer-devel.h>
24 #include <dali/devel-api/text-abstraction/text-abstraction-definitions.h>
27 #include <dali-toolkit/public-api/visuals/text-visual-properties.h>
28 #include <dali-toolkit/devel-api/visuals/text-visual-properties-devel.h>
29 #include <dali-toolkit/public-api/visuals/visual-properties.h>
30 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
31 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
32 #include <dali-toolkit/internal/visuals/visual-base-impl.h>
33 #include <dali-toolkit/internal/visuals/visual-base-data-impl.h>
34 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
35 #include <dali-toolkit/internal/text/text-font-style.h>
36 #include <dali-toolkit/internal/text/text-effects-style.h>
37 #include <dali-toolkit/internal/text/script-run.h>
38 #include <dali-toolkit/internal/text/text-enumerations-impl.h>
39 #include <dali-toolkit/devel-api/text/text-enumerations-devel.h>
52 const Vector4 FULL_TEXTURE_RECT( 0.f, 0.f, 1.f, 1.f );
54 const char* VERTEX_SHADER = DALI_COMPOSE_SHADER(
55 attribute mediump vec2 aPosition;\n
56 uniform highp mat4 uMvpMatrix;\n
57 uniform mediump vec3 uSize;\n
58 uniform mediump vec4 pixelArea;\n
60 varying mediump vec2 vTexCoord;\n
62 //Visual size and offset
63 uniform mediump vec2 offset;\n
64 uniform mediump vec2 size;\n
65 uniform mediump vec4 offsetSizeMode;\n
66 uniform mediump vec2 origin;\n
67 uniform mediump vec2 anchorPoint;\n
69 vec4 ComputeVertexPosition()\n
71 vec2 visualSize = mix(uSize.xy*size, size, offsetSizeMode.zw );\n
72 vec2 visualOffset = mix( offset, offset/uSize.xy, offsetSizeMode.xy);\n
73 return vec4( (aPosition + anchorPoint)*visualSize + (visualOffset + origin)*uSize.xy, 0.0, 1.0 );\n
78 gl_Position = uMvpMatrix * ComputeVertexPosition();\n
79 vTexCoord = pixelArea.xy+pixelArea.zw*(aPosition + vec2(0.5) );\n
83 const char* FRAGMENT_SHADER_SINGLE_COLOR_TEXT = DALI_COMPOSE_SHADER(
84 varying mediump vec2 vTexCoord;\n
85 uniform sampler2D sTexture;\n
86 uniform lowp vec4 uTextColorAnimatable;\n
87 uniform lowp vec4 uColor;\n
88 uniform lowp vec3 mixColor;\n
92 mediump float textTexture = texture2D( sTexture, vTexCoord ).r;\n
94 // Set the color of the text to what it is animated to.
95 gl_FragColor = uTextColorAnimatable * textTexture * uColor * vec4( mixColor, 1.0 );
99 const char* FRAGMENT_SHADER_MULTI_COLOR_TEXT = DALI_COMPOSE_SHADER(
100 varying mediump vec2 vTexCoord;\n
101 uniform sampler2D sTexture;\n
102 uniform lowp vec4 uColor;\n
103 uniform lowp vec3 mixColor;\n
107 mediump vec4 textTexture = texture2D( sTexture, vTexCoord );\n
109 gl_FragColor = textTexture * uColor * vec4( mixColor, 1.0 );
113 const char* FRAGMENT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE = DALI_COMPOSE_SHADER(
114 varying mediump vec2 vTexCoord;\n
115 uniform sampler2D sTexture;\n
116 uniform sampler2D sStyle;\n
117 uniform lowp vec4 uTextColorAnimatable;\n
118 uniform lowp vec4 uColor;\n
119 uniform lowp vec3 mixColor;\n
123 mediump float textTexture = texture2D( sTexture, vTexCoord ).r;\n
124 mediump vec4 styleTexture = texture2D( sStyle, vTexCoord );\n
126 // Draw the text as overlay above the style
127 gl_FragColor = ( uTextColorAnimatable * textTexture + styleTexture * ( 1.0 - uTextColorAnimatable.a * textTexture ) ) * uColor * vec4( mixColor, 1.0 );\n
131 const char* FRAGMENT_SHADER_MULTI_COLOR_TEXT_WITH_STYLE = DALI_COMPOSE_SHADER(
132 varying mediump vec2 vTexCoord;\n
133 uniform sampler2D sTexture;\n
134 uniform sampler2D sStyle;\n
135 uniform lowp vec4 uColor;\n
136 uniform lowp vec3 mixColor;\n
140 mediump vec4 textTexture = texture2D( sTexture, vTexCoord );\n
141 mediump vec4 styleTexture = texture2D( sStyle, vTexCoord );\n
143 // Draw the text as overlay above the style
144 gl_FragColor = ( textTexture + styleTexture * ( 1.0 - textTexture.a ) ) * uColor * vec4( mixColor, 1.0 );\n
148 const char* FRAGMENT_SHADER_SINGLE_COLOR_TEXT_WITH_EMOJI = DALI_COMPOSE_SHADER(
149 varying mediump vec2 vTexCoord;\n
150 uniform sampler2D sTexture;\n
151 uniform sampler2D sMask;\n
152 uniform lowp vec4 uTextColorAnimatable;\n
153 uniform lowp vec4 uColor;\n
154 uniform lowp vec3 mixColor;\n
158 mediump vec4 textTexture = texture2D( sTexture, vTexCoord );\n
159 mediump float maskTexture = texture2D( sMask, vTexCoord ).r;\n
161 // Set the color of non-transparent pixel in text to what it is animated to.
162 // Markup text with multiple text colors are not animated (but can be supported later on if required).
163 // Emoji color are not animated.
164 mediump float vstep = step( 0.0001, textTexture.a );\n
165 textTexture.rgb = mix( textTexture.rgb, uTextColorAnimatable.rgb, vstep * maskTexture );\n
167 // Draw the text as overlay above the style
168 gl_FragColor = textTexture * uColor * vec4( mixColor, 1.0 );\n
172 const char* FRAGMENT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE_AND_EMOJI = DALI_COMPOSE_SHADER(
173 varying mediump vec2 vTexCoord;\n
174 uniform sampler2D sTexture;\n
175 uniform sampler2D sStyle;\n
176 uniform sampler2D sMask;\n
177 uniform lowp float uHasMultipleTextColors;\n
178 uniform lowp vec4 uTextColorAnimatable;\n
179 uniform lowp vec4 uColor;\n
180 uniform lowp vec3 mixColor;\n
184 mediump vec4 textTexture = texture2D( sTexture, vTexCoord );\n
185 mediump vec4 styleTexture = texture2D( sStyle, vTexCoord );\n
186 mediump float maskTexture = texture2D( sMask, vTexCoord ).r;\n
188 // Set the color of non-transparent pixel in text to what it is animated to.
189 // Markup text with multiple text colors are not animated (but can be supported later on if required).
190 // Emoji color are not animated.
191 mediump float vstep = step( 0.0001, textTexture.a );\n
192 textTexture.rgb = mix( textTexture.rgb, uTextColorAnimatable.rgb, vstep * maskTexture * ( 1.0 - uHasMultipleTextColors ) );\n
194 // Draw the text as overlay above the style
195 gl_FragColor = ( textTexture + styleTexture * ( 1.0 - textTexture.a ) ) * uColor * vec4( mixColor, 1.0 );\n
200 * Return Property index for the given string key
201 * param[in] stringKey the string index key
202 * return the key as an index
205 Dali::Property::Index StringKeyToIndexKey( const std::string& stringKey )
207 Dali::Property::Index result = Property::INVALID_KEY;
209 if( stringKey == VISUAL_TYPE )
211 result = Toolkit::Visual::Property::TYPE;
213 else if( stringKey == TEXT_PROPERTY )
215 result = Toolkit::TextVisual::Property::TEXT;
217 else if( stringKey == FONT_FAMILY_PROPERTY )
219 result = Toolkit::TextVisual::Property::FONT_FAMILY;
221 else if( stringKey == FONT_STYLE_PROPERTY )
223 result = Toolkit::TextVisual::Property::FONT_STYLE;
225 else if( stringKey == POINT_SIZE_PROPERTY )
227 result = Toolkit::TextVisual::Property::POINT_SIZE;
229 else if( stringKey == MULTI_LINE_PROPERTY )
231 result = Toolkit::TextVisual::Property::MULTI_LINE;
233 else if( stringKey == HORIZONTAL_ALIGNMENT_PROPERTY )
235 result = Toolkit::TextVisual::Property::HORIZONTAL_ALIGNMENT;
237 else if( stringKey == VERTICAL_ALIGNMENT_PROPERTY )
239 result = Toolkit::TextVisual::Property::VERTICAL_ALIGNMENT;
241 else if( stringKey == TEXT_COLOR_PROPERTY )
243 result = Toolkit::TextVisual::Property::TEXT_COLOR;
245 else if( stringKey == ENABLE_MARKUP_PROPERTY )
247 result = Toolkit::TextVisual::Property::ENABLE_MARKUP;
249 else if( stringKey == SHADOW_PROPERTY )
251 result = Toolkit::TextVisual::Property::SHADOW;
253 else if( stringKey == UNDERLINE_PROPERTY )
255 result = Toolkit::TextVisual::Property::UNDERLINE;
257 else if( stringKey == OUTLINE_PROPERTY )
259 result = Toolkit::DevelTextVisual::Property::OUTLINE;
261 else if( stringKey == BACKGROUND_PROPERTY )
263 result = Toolkit::DevelTextVisual::Property::BACKGROUND;
269 void TextColorConstraint( Vector4& current, const PropertyInputContainer& inputs )
271 Vector4 color = inputs[0]->GetVector4();
272 current.r = color.r * color.a;
273 current.g = color.g * color.a;
274 current.b = color.b * color.a;
278 void OpacityConstraint( float& current, const PropertyInputContainer& inputs )
280 // Make zero if the alpha value of text color is zero to skip rendering text
281 if( EqualsZero( inputs[0]->GetVector4().a ) )
291 } // unnamed namespace
293 TextVisualPtr TextVisual::New( VisualFactoryCache& factoryCache, const Property::Map& properties )
295 TextVisualPtr TextVisualPtr( new TextVisual( factoryCache ) );
296 TextVisualPtr->SetProperties( properties );
297 return TextVisualPtr;
300 void TextVisual::ConvertStringKeysToIndexKeys( Property::Map& propertyMap )
302 Property::Map outMap;
304 for( Property::Map::SizeType index = 0u, count = propertyMap.Count(); index < count; ++index )
306 const KeyValuePair& keyValue = propertyMap.GetKeyValue( index );
308 Property::Index indexKey = keyValue.first.indexKey;
310 if ( keyValue.first.type == Property::Key::STRING )
312 indexKey = StringKeyToIndexKey( keyValue.first.stringKey );
315 outMap.Insert( indexKey, keyValue.second );
318 propertyMap = outMap;
321 float TextVisual::GetHeightForWidth( float width )
323 return mController->GetHeightForWidth( width );
326 void TextVisual::GetNaturalSize( Vector2& naturalSize )
328 naturalSize = mController->GetNaturalSize().GetVectorXY();
331 void TextVisual::DoCreatePropertyMap( Property::Map& map ) const
333 Property::Value value;
336 map.Insert( Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT );
339 mController->GetText( text );
340 map.Insert( Toolkit::TextVisual::Property::TEXT, text );
342 map.Insert( Toolkit::TextVisual::Property::FONT_FAMILY, mController->GetDefaultFontFamily() );
344 GetFontStyleProperty( mController, value, Text::FontStyle::DEFAULT );
345 map.Insert( Toolkit::TextVisual::Property::FONT_STYLE, value );
347 map.Insert( Toolkit::TextVisual::Property::POINT_SIZE, mController->GetDefaultFontSize( Text::Controller::POINT_SIZE ) );
349 map.Insert( Toolkit::TextVisual::Property::MULTI_LINE, mController->IsMultiLineEnabled() );
351 map.Insert( Toolkit::TextVisual::Property::HORIZONTAL_ALIGNMENT, mController->GetHorizontalAlignment() );
353 map.Insert( Toolkit::TextVisual::Property::VERTICAL_ALIGNMENT, mController->GetVerticalAlignment() );
355 map.Insert( Toolkit::TextVisual::Property::TEXT_COLOR, mController->GetDefaultColor() );
357 map.Insert( Toolkit::TextVisual::Property::ENABLE_MARKUP, mController->IsMarkupProcessorEnabled() );
359 GetShadowProperties( mController, value, Text::EffectStyle::DEFAULT );
360 map.Insert( Toolkit::TextVisual::Property::SHADOW, value );
362 GetUnderlineProperties( mController, value, Text::EffectStyle::DEFAULT );
363 map.Insert( Toolkit::TextVisual::Property::UNDERLINE, value );
365 GetOutlineProperties( mController, value, Text::EffectStyle::DEFAULT );
366 map.Insert( Toolkit::DevelTextVisual::Property::OUTLINE, value );
368 GetBackgroundProperties( mController, value, Text::EffectStyle::DEFAULT );
369 map.Insert( Toolkit::DevelTextVisual::Property::BACKGROUND, value );
372 void TextVisual::DoCreateInstancePropertyMap( Property::Map& map ) const
375 map.Insert( Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT );
377 mController->GetText( text );
378 map.Insert( Toolkit::TextVisual::Property::TEXT, text );
382 TextVisual::TextVisual( VisualFactoryCache& factoryCache )
383 : Visual::Base( factoryCache, Visual::FittingMode::FIT_KEEP_ASPECT_RATIO ),
384 mController( Text::Controller::New() ),
385 mTypesetter( Text::Typesetter::New( mController->GetTextModel() ) ),
386 mAnimatableTextColorPropertyIndex( Property::INVALID_INDEX ),
387 mRendererUpdateNeeded( false )
391 TextVisual::~TextVisual()
395 void TextVisual::DoSetProperties( const Property::Map& propertyMap )
397 for( Property::Map::SizeType index = 0u, count = propertyMap.Count(); index < count; ++index )
399 const KeyValuePair& keyValue = propertyMap.GetKeyValue( index );
401 Property::Index indexKey = keyValue.first.indexKey;
403 if( keyValue.first.type == Property::Key::STRING )
405 indexKey = StringKeyToIndexKey( keyValue.first.stringKey );
408 DoSetProperty( indexKey, keyValue.second );
411 // Elide the text if it exceeds the boundaries.
412 mController->SetTextElideEnabled( true );
414 // Retrieve the layout engine to set the cursor's width.
415 Text::Layout::Engine& engine = mController->GetLayoutEngine();
417 // Sets 0 as cursor's width.
418 engine.SetCursorWidth( 0u ); // Do not layout space for the cursor.
421 void TextVisual::DoSetOnStage( Actor& actor )
425 Geometry geometry = mFactoryCache.GetGeometry( VisualFactoryCache::QUAD_GEOMETRY );
426 Shader shader = GetTextShader(mFactoryCache, TextType::SINGLE_COLOR_TEXT, TextType::NO_EMOJI, TextType::NO_STYLES);
428 mImpl->mRenderer = Renderer::New( geometry, shader );
429 mImpl->mRenderer.SetProperty( Dali::Renderer::Property::DEPTH_INDEX, Toolkit::DepthIndex::CONTENT );
431 // Enable the pre-multiplied alpha to improve the text quality
432 EnablePreMultipliedAlpha(true);
434 const Vector4& defaultColor = mController->GetTextModel()->GetDefaultColor();
435 Dali::Property::Index shaderTextColorIndex = mImpl->mRenderer.RegisterProperty( "uTextColorAnimatable", defaultColor );
437 if ( mAnimatableTextColorPropertyIndex != Property::INVALID_INDEX )
439 // Create constraint for the animatable text's color Property with uTextColorAnimatable in the renderer.
440 if( shaderTextColorIndex != Property::INVALID_INDEX )
442 Constraint colorConstraint = Constraint::New<Vector4>( mImpl->mRenderer, shaderTextColorIndex, TextColorConstraint );
443 colorConstraint.AddSource( Source( actor, mAnimatableTextColorPropertyIndex ) );
444 colorConstraint.Apply();
446 // Make zero if the alpha value of text color is zero to skip rendering text
447 Constraint opacityConstraint = Constraint::New< float >( mImpl->mRenderer, Dali::DevelRenderer::Property::OPACITY, OpacityConstraint );
448 opacityConstraint.AddSource( Source( actor, mAnimatableTextColorPropertyIndex ) );
449 opacityConstraint.Apply();
453 // Renderer needs textures and to be added to control
454 mRendererUpdateNeeded = true;
459 void TextVisual::DoSetOffStage( Actor& actor )
461 if( mImpl->mRenderer )
463 // Removes the renderer from the actor.
464 actor.RemoveRenderer( mImpl->mRenderer );
468 // Resets the renderer.
469 mImpl->mRenderer.Reset();
472 // Resets the control handle.
476 void TextVisual::OnSetTransform()
481 void TextVisual::DoSetProperty( Dali::Property::Index index, const Dali::Property::Value& propertyValue )
485 case Toolkit::TextVisual::Property::ENABLE_MARKUP:
487 const bool enableMarkup = propertyValue.Get<bool>();
488 mController->SetMarkupProcessorEnabled( enableMarkup );
491 case Toolkit::TextVisual::Property::TEXT:
493 mController->SetText( propertyValue.Get<std::string>() );
496 case Toolkit::TextVisual::Property::FONT_FAMILY:
498 SetFontFamilyProperty( mController, propertyValue );
501 case Toolkit::TextVisual::Property::FONT_STYLE:
503 SetFontStyleProperty( mController, propertyValue, Text::FontStyle::DEFAULT );
506 case Toolkit::TextVisual::Property::POINT_SIZE:
508 const float pointSize = propertyValue.Get<float>();
509 if( !Equals( mController->GetDefaultFontSize( Text::Controller::POINT_SIZE ), pointSize ) )
511 mController->SetDefaultFontSize( pointSize, Text::Controller::POINT_SIZE );
515 case Toolkit::TextVisual::Property::MULTI_LINE:
517 mController->SetMultiLineEnabled( propertyValue.Get<bool>() );
520 case Toolkit::TextVisual::Property::HORIZONTAL_ALIGNMENT:
524 Text::HorizontalAlignment::Type alignment( static_cast< Text::HorizontalAlignment::Type >( -1 ) ); // Set to invalid value to ensure a valid mode does get set
525 if( Toolkit::Text::GetHorizontalAlignmentEnumeration( propertyValue, alignment ) )
527 mController->SetHorizontalAlignment( alignment );
532 case Toolkit::TextVisual::Property::VERTICAL_ALIGNMENT:
536 Toolkit::Text::VerticalAlignment::Type alignment( static_cast< Text::VerticalAlignment::Type >( -1 ) ); // Set to invalid value to ensure a valid mode does get set
537 if( Toolkit::Text::GetVerticalAlignmentEnumeration( propertyValue, alignment) )
539 mController->SetVerticalAlignment( alignment );
544 case Toolkit::TextVisual::Property::TEXT_COLOR:
546 const Vector4& textColor = propertyValue.Get< Vector4 >();
547 if( mController->GetDefaultColor() != textColor )
549 mController->SetDefaultColor( textColor );
553 case Toolkit::TextVisual::Property::SHADOW:
555 SetShadowProperties( mController, propertyValue, Text::EffectStyle::DEFAULT );
558 case Toolkit::TextVisual::Property::UNDERLINE:
560 SetUnderlineProperties( mController, propertyValue, Text::EffectStyle::DEFAULT );
563 case Toolkit::DevelTextVisual::Property::OUTLINE:
565 SetOutlineProperties( mController, propertyValue, Text::EffectStyle::DEFAULT );
568 case Toolkit::DevelTextVisual::Property::BACKGROUND:
570 SetBackgroundProperties( mController, propertyValue, Text::EffectStyle::DEFAULT );
576 void TextVisual::UpdateRenderer()
578 Actor control = mControl.GetHandle();
585 // Calculates the size to be used to relayout.
586 Vector2 relayoutSize;
588 const bool isWidthRelative = fabsf( mImpl->mTransform.mOffsetSizeMode.z ) < Math::MACHINE_EPSILON_1000;
589 const bool isHeightRelative = fabsf( mImpl->mTransform.mOffsetSizeMode.w ) < Math::MACHINE_EPSILON_1000;
591 // Round the size and offset to avoid pixel alignement issues.
592 relayoutSize.width = floorf( 0.5f + ( isWidthRelative ? mImpl->mControlSize.width * mImpl->mTransform.mSize.x : mImpl->mTransform.mSize.width ) );
593 relayoutSize.height = floorf( 0.5f + ( isHeightRelative ? mImpl->mControlSize.height * mImpl->mTransform.mSize.y : mImpl->mTransform.mSize.height ) );
596 mController->GetText( text );
598 if( ( fabsf( relayoutSize.width ) < Math::MACHINE_EPSILON_1000 ) || ( fabsf( relayoutSize.height ) < Math::MACHINE_EPSILON_1000 ) || text.empty() )
600 // Removes the texture set.
603 // Remove any renderer previously set.
604 if( mImpl->mRenderer )
606 control.RemoveRenderer( mImpl->mRenderer );
609 // Nothing else to do if the relayout size is zero.
610 ResourceReady( Toolkit::Visual::ResourceStatus::READY );
614 Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>( control.GetProperty( Dali::Actor::Property::LAYOUT_DIRECTION ).Get<int>() );
616 const Text::Controller::UpdateTextType updateTextType = mController->Relayout( relayoutSize, layoutDirection );
618 if( Text::Controller::NONE_UPDATED != ( Text::Controller::MODEL_UPDATED & updateTextType )
619 || mRendererUpdateNeeded )
621 mRendererUpdateNeeded = false;
623 // Removes the texture set.
626 // Remove any renderer previously set.
627 if( mImpl->mRenderer )
629 control.RemoveRenderer( mImpl->mRenderer );
632 if( ( relayoutSize.width > Math::MACHINE_EPSILON_1000 ) &&
633 ( relayoutSize.height > Math::MACHINE_EPSILON_1000 ) )
635 // Check whether it is a markup text with multiple text colors
636 const Vector4* const colorsBuffer = mController->GetTextModel()->GetColors();
637 bool hasMultipleTextColors = ( NULL != colorsBuffer );
639 // Check whether the text contains any color glyph
640 bool containsColorGlyph = false;
642 TextAbstraction::FontClient fontClient = TextAbstraction::FontClient::Get();
643 const Text::GlyphInfo* const glyphsBuffer = mController->GetTextModel()->GetGlyphs();
644 const Text::Length numberOfGlyphs = mController->GetTextModel()->GetNumberOfGlyphs();
645 for ( Text::Length glyphIndex = 0; glyphIndex < numberOfGlyphs; glyphIndex++ )
647 // Retrieve the glyph's info.
648 const Text::GlyphInfo* const glyphInfo = glyphsBuffer + glyphIndex;
650 // Whether the current glyph is a color one.
651 if( fontClient.IsColorGlyph( glyphInfo->fontId, glyphInfo->index ) )
653 containsColorGlyph = true;
658 // Check whether the text contains any style colors (e.g. underline color, shadow color, etc.)
660 bool shadowEnabled = false;
661 const Vector2& shadowOffset = mController->GetTextModel()->GetShadowOffset();
662 if ( fabsf( shadowOffset.x ) > Math::MACHINE_EPSILON_1 || fabsf( shadowOffset.y ) > Math::MACHINE_EPSILON_1 )
664 shadowEnabled = true;
667 const bool underlineEnabled = mController->GetTextModel()->IsUnderlineEnabled();
668 const bool outlineEnabled = ( mController->GetTextModel()->GetOutlineWidth() > Math::MACHINE_EPSILON_1 );
669 const bool backgroundEnabled = mController->GetTextModel()->IsBackgroundEnabled();;
671 const bool styleEnabled = ( shadowEnabled || underlineEnabled || outlineEnabled || backgroundEnabled );
673 TextureSet textureSet = GetTextTexture( relayoutSize, hasMultipleTextColors, containsColorGlyph, styleEnabled );
674 mImpl->mRenderer.SetTextures( textureSet );
676 Shader shader = GetTextShader( mFactoryCache, hasMultipleTextColors, containsColorGlyph, styleEnabled );
677 mImpl->mRenderer.SetShader(shader);
679 mImpl->mFlags &= ~Impl::IS_ATLASING_APPLIED;
681 mImpl->mRenderer.RegisterProperty( "uHasMultipleTextColors", static_cast<float>( hasMultipleTextColors ) );
683 mImpl->mRenderer.SetProperty( Renderer::Property::BLEND_MODE, BlendMode::ON);
685 //Register transform properties
686 mImpl->mTransform.RegisterUniforms( mImpl->mRenderer, Direction::LEFT_TO_RIGHT );
688 control.AddRenderer( mImpl->mRenderer );
690 // Text rendered and ready to display
691 ResourceReady( Toolkit::Visual::ResourceStatus::READY );
696 void TextVisual::RemoveTextureSet()
698 if( mImpl->mFlags & Impl::IS_ATLASING_APPLIED )
700 // Removes the text's image from the texture atlas.
703 const Property::Index index = mImpl->mRenderer.GetPropertyIndex( ATLAS_RECT_UNIFORM_NAME );
704 if( index != Property::INVALID_INDEX )
706 const Property::Value& atlasRectValue = mImpl->mRenderer.GetProperty( index );
707 atlasRectValue.Get( atlasRect );
709 const TextureSet& textureSet = mImpl->mRenderer.GetTextures();
710 mFactoryCache.GetAtlasManager()->Remove( textureSet, atlasRect );
715 TextureSet TextVisual::GetTextTexture( const Vector2& size, bool hasMultipleTextColors, bool containsColorGlyph, bool styleEnabled )
717 // Filter mode needs to be set to linear to produce better quality while scaling.
718 Sampler sampler = Sampler::New();
719 sampler.SetFilterMode( FilterMode::LINEAR, FilterMode::LINEAR );
721 TextureSet textureSet = TextureSet::New();
723 // Create RGBA texture if the text contains emojis or multiple text colors, otherwise L8 texture
724 Pixel::Format textPixelFormat = ( containsColorGlyph || hasMultipleTextColors ) ? Pixel::RGBA8888 : Pixel::L8;
726 // Check the text direction
727 Toolkit::DevelText::TextDirection::Type textDirection = mController->GetTextDirection();
729 // Create a texture for the text without any styles
730 PixelData data = mTypesetter->Render( size, textDirection, Text::Typesetter::RENDER_NO_STYLES, false, textPixelFormat );
732 // It may happen the image atlas can't handle a pixel data it exceeds the maximum size.
733 // In that case, create a texture. TODO: should tile the text.
735 Texture texture = Texture::New( Dali::TextureType::TEXTURE_2D,
736 data.GetPixelFormat(),
740 texture.Upload( data );
742 textureSet.SetTexture( 0u, texture );
743 textureSet.SetSampler( 0u, sampler );
747 // Create RGBA texture for all the text styles (without the text itself)
748 PixelData styleData = mTypesetter->Render( size, textDirection, Text::Typesetter::RENDER_NO_TEXT, false, Pixel::RGBA8888 );
750 Texture styleTexture = Texture::New( Dali::TextureType::TEXTURE_2D,
751 styleData.GetPixelFormat(),
752 styleData.GetWidth(),
753 styleData.GetHeight() );
755 styleTexture.Upload( styleData );
757 textureSet.SetTexture( 1u, styleTexture );
758 textureSet.SetSampler( 1u, sampler );
761 if ( containsColorGlyph && !hasMultipleTextColors )
763 // Create a L8 texture as a mask to avoid color glyphs (e.g. emojis) to be affected by text color animation
764 PixelData maskData = mTypesetter->Render( size, textDirection, Text::Typesetter::RENDER_MASK, false, Pixel::L8 );
766 Texture maskTexture = Texture::New( Dali::TextureType::TEXTURE_2D,
767 maskData.GetPixelFormat(),
769 maskData.GetHeight() );
771 maskTexture.Upload( maskData );
775 textureSet.SetTexture( 1u, maskTexture );
776 textureSet.SetSampler( 1u, sampler );
780 textureSet.SetTexture( 2u, maskTexture );
781 textureSet.SetSampler( 2u, sampler );
788 Shader TextVisual::GetTextShader( VisualFactoryCache& factoryCache, bool hasMultipleTextColors, bool containsColorGlyph, bool styleEnabled )
792 if( hasMultipleTextColors && !styleEnabled )
794 // We don't animate text color if the text contains multiple colors
795 shader = factoryCache.GetShader( VisualFactoryCache::TEXT_SHADER_MULTI_COLOR_TEXT );
798 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER_MULTI_COLOR_TEXT );
799 shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
800 factoryCache.SaveShader( VisualFactoryCache::TEXT_SHADER_MULTI_COLOR_TEXT, shader );
803 else if( hasMultipleTextColors && styleEnabled )
805 // We don't animate text color if the text contains multiple colors
806 shader = factoryCache.GetShader( VisualFactoryCache::TEXT_SHADER_MULTI_COLOR_TEXT_WITH_STYLE );
809 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER_MULTI_COLOR_TEXT_WITH_STYLE );
810 shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
811 factoryCache.SaveShader( VisualFactoryCache::TEXT_SHADER_MULTI_COLOR_TEXT_WITH_STYLE, shader );
814 else if( !hasMultipleTextColors && !containsColorGlyph && !styleEnabled )
816 shader = factoryCache.GetShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT );
819 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER_SINGLE_COLOR_TEXT );
820 shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
821 factoryCache.SaveShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT, shader );
824 else if( !hasMultipleTextColors && !containsColorGlyph && styleEnabled )
826 shader = factoryCache.GetShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE );
829 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE );
830 shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
831 factoryCache.SaveShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE, shader );
834 else if( !hasMultipleTextColors && containsColorGlyph && !styleEnabled )
836 shader = factoryCache.GetShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT_WITH_EMOJI );
839 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER_SINGLE_COLOR_TEXT_WITH_EMOJI );
840 shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
841 factoryCache.SaveShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT_WITH_EMOJI, shader );
844 else // if( !hasMultipleTextColors && containsColorGlyph && styleEnabled )
846 shader = factoryCache.GetShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE_AND_EMOJI );
849 shader = Shader::New( VERTEX_SHADER, FRAGMENT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE_AND_EMOJI );
850 shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
851 factoryCache.SaveShader( VisualFactoryCache::TEXT_SHADER_SINGLE_COLOR_TEXT_WITH_STYLE_AND_EMOJI, shader );
858 } // namespace Internal
860 } // namespace Toolkit