2 * Copyright (c) 2015 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/text/rendering/atlas/text-atlas-renderer.h>
22 #include <dali/dali.h>
23 #include <dali/devel-api/object/property-buffer.h>
24 #include <dali/devel-api/rendering/geometry.h>
25 #include <dali/devel-api/rendering/renderer.h>
26 #include <dali/devel-api/rendering/sampler.h>
27 #include <dali/devel-api/rendering/shader.h>
28 #include <dali/devel-api/text-abstraction/font-client.h>
29 #include <dali/integration-api/debug.h>
31 #include <dali-toolkit/public-api/controls/control-depth-index-ranges.h>
32 #include <dali-toolkit/internal/text/rendering/atlas/atlas-glyph-manager.h>
35 using namespace Dali::Toolkit;
36 using namespace Dali::Toolkit::Text;
40 #if defined(DEBUG_ENABLED)
41 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::Concise, true, "LOG_TEXT_RENDERING");
44 const float ZERO( 0.0f );
45 const float HALF( 0.5f );
46 const float ONE( 1.0f );
47 const float TWO( 2.0f );
48 const uint32_t DEFAULT_ATLAS_WIDTH = 512u;
49 const uint32_t DEFAULT_ATLAS_HEIGHT = 512u;
51 struct AtlasRenderer::Impl : public ConnectionTracker
64 AtlasManager::Mesh2D mMesh;
65 FrameBufferImage mBuffer;
74 float mUnderlinePosition;
75 float mUnderlineThickness;
76 uint32_t mMeshRecordIndex;
82 uint32_t mNeededBlockWidth;
83 uint32_t mNeededBlockHeight;
89 Text::GlyphIndex mIndex;
95 Text::GlyphIndex mIndex;
101 mGlyphManager = AtlasGlyphManager::Get();
102 mFontClient = TextAbstraction::FontClient::Get();
104 mQuadVertexFormat[ "aPosition" ] = Property::VECTOR2;
105 mQuadVertexFormat[ "aTexCoord" ] = Property::VECTOR2;
106 mQuadIndexFormat[ "indices" ] = Property::UNSIGNED_INTEGER;
109 void AddGlyphs( const std::vector<Vector2>& positions,
110 const Vector<GlyphInfo>& glyphs,
111 const Vector4& textColor,
112 const Vector2& shadowOffset,
113 const Vector4& shadowColor,
114 bool underlineEnabled,
115 const Vector4& underlineColor,
116 float underlineHeight,
119 AtlasManager::AtlasSlot slot;
120 std::vector< MeshRecord > meshContainer;
121 Vector< Extent > extents;
122 TextCacheEntry textCacheEntry;
123 mDepth = static_cast< int >( depth );
125 float currentUnderlinePosition = ZERO;
126 float currentUnderlineThickness = underlineHeight;
127 uint32_t currentBlockSize = 0;
128 FontId lastFontId = 0;
129 Style style = STYLE_NORMAL;
131 if ( fabsf( shadowOffset.x ) > Math::MACHINE_EPSILON_1 || fabsf( shadowOffset.y ) > Math::MACHINE_EPSILON_1 )
133 style = STYLE_DROP_SHADOW;
136 if ( mTextCache.Size() )
138 // Update the glyph cache with any changes to current text
139 RemoveText( glyphs );
142 CalculateBlocksSize( glyphs );
144 for( uint32_t i = 0, glyphSize = glyphs.Size(); i < glyphSize; ++i )
146 const GlyphInfo& glyph = glyphs[ i ];
148 // No operation for white space
149 if ( glyph.width && glyph.height )
151 // Are we still using the same fontId as previous
152 if ( glyph.fontId != lastFontId )
154 // We need to fetch fresh font underline metrics
155 FontMetrics fontMetrics;
156 mFontClient.GetFontMetrics( glyph.fontId, fontMetrics );
157 currentUnderlinePosition = ceil( fabsf( fontMetrics.underlinePosition ) );
158 float descender = ceil( fabsf( fontMetrics.descender ) );
160 if ( underlineHeight == ZERO )
162 currentUnderlineThickness = fontMetrics.underlineThickness;
164 // Ensure underline will be at least a pixel high
165 if ( currentUnderlineThickness < ONE )
167 currentUnderlineThickness = ONE;
171 currentUnderlineThickness = ceil( currentUnderlineThickness );
175 // Clamp the underline position at the font descender and check for ( as EFL describes it ) a broken font
176 if ( currentUnderlinePosition > descender )
178 currentUnderlinePosition = descender;
180 if ( ZERO == currentUnderlinePosition )
182 // Move offset down by one ( EFL behavior )
183 currentUnderlinePosition = ONE;
187 const Vector2& position = positions[ i ];
188 AtlasManager::Mesh2D newMesh;
190 if ( !mGlyphManager.Cached( glyph.fontId, glyph.index, slot ) )
192 // Select correct size for new atlas if needed....?
193 if ( lastFontId != glyph.fontId )
195 for ( uint32_t j = 0; j < mBlockSizes.size(); ++j )
197 if ( mBlockSizes[ j ].mFontId == glyph.fontId )
199 currentBlockSize = j;
200 mGlyphManager.SetNewAtlasSize( DEFAULT_ATLAS_WIDTH,
201 DEFAULT_ATLAS_HEIGHT,
202 mBlockSizes[ j ].mNeededBlockWidth,
203 mBlockSizes[ j ].mNeededBlockHeight );
208 // Create a new image for the glyph
209 BufferImage bitmap = mFontClient.CreateBitmap( glyph.fontId, glyph.index );
212 // Ensure that the next image will fit into the current block size
213 bool setSize = false;
214 if ( bitmap.GetWidth() > mBlockSizes[ currentBlockSize ].mNeededBlockWidth )
217 mBlockSizes[ currentBlockSize ].mNeededBlockWidth = bitmap.GetWidth();
219 if ( bitmap.GetHeight() > mBlockSizes[ currentBlockSize ].mNeededBlockHeight )
222 mBlockSizes[ currentBlockSize ].mNeededBlockHeight = bitmap.GetHeight();
227 mGlyphManager.SetNewAtlasSize( DEFAULT_ATLAS_WIDTH,
228 DEFAULT_ATLAS_HEIGHT,
229 mBlockSizes[ currentBlockSize ].mNeededBlockWidth,
230 mBlockSizes[ currentBlockSize ].mNeededBlockHeight );
233 // Locate a new slot for our glyph
234 mGlyphManager.Add( glyph, bitmap, slot );
238 // Generate mesh data for this quad, plugging in our supplied position
239 mGlyphManager.GenerateMeshData( slot.mImageId, position, newMesh );
240 textCacheEntry.mFontId = glyph.fontId;
241 textCacheEntry.mImageId = slot.mImageId;
242 textCacheEntry.mIndex = glyph.index;
243 mTextCache.PushBack( textCacheEntry );
245 // Find an existing mesh data object to attach to ( or create a new one, if we can't find one using the same atlas)
246 StitchTextMesh( meshContainer,
250 position.y + glyph.yBearing,
251 currentUnderlinePosition,
252 currentUnderlineThickness,
254 lastFontId = glyph.fontId;
258 if ( underlineEnabled )
260 // Check to see if any of the text needs an underline
261 GenerateUnderlines( meshContainer, extents, underlineColor, textColor );
264 // For each MeshData object, create a mesh actor and add to the renderable actor
265 if ( meshContainer.size() )
267 for ( std::vector< MeshRecord >::iterator mIt = meshContainer.begin(); mIt != meshContainer.end(); ++mIt )
269 Actor actor = CreateMeshActor( *mIt );
271 // Create an effect if necessary
272 if ( style == STYLE_DROP_SHADOW )
274 actor.Add( GenerateShadow( *mIt, shadowOffset, shadowColor ) );
279 actor.SetParentOrigin( ParentOrigin::CENTER ); // Keep all of the origins aligned
288 #if defined(DEBUG_ENABLED)
289 Toolkit::AtlasGlyphManager::Metrics metrics = mGlyphManager.GetMetrics();
290 DALI_LOG_INFO( gLogFilter, Debug::General, "TextAtlasRenderer::GlyphManager::GlyphCount: %i, AtlasCount: %i, TextureMemoryUse: %iK\n",
292 metrics.mAtlasMetrics.mAtlasCount,
293 metrics.mAtlasMetrics.mTextureMemoryUsed / 1024 );
294 for ( uint32_t i = 0; i < metrics.mAtlasMetrics.mAtlasCount; ++i )
296 DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Atlas [%i] %sPixels: %s Size: %ix%i, BlockSize: %ix%i, BlocksUsed: %i/%i\n",
297 i + 1, i > 8 ? "" : " ",
298 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mPixelFormat == Pixel::L8 ? "L8 " : "BGRA",
299 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mSize.mWidth,
300 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mSize.mHeight,
301 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mSize.mBlockWidth,
302 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mSize.mBlockHeight,
303 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mBlocksUsed,
304 metrics.mAtlasMetrics.mAtlasMetrics[ i ].mTotalBlocks );
309 Actor CreateMeshActor( const MeshRecord& meshRecord )
311 PropertyBuffer quadVertices = PropertyBuffer::New( mQuadVertexFormat, meshRecord.mMesh.mVertices.Size() );
312 PropertyBuffer quadIndices = PropertyBuffer::New( mQuadIndexFormat, meshRecord.mMesh.mIndices.Size() );
313 quadVertices.SetData( const_cast< AtlasManager::Vertex2D* >( &meshRecord.mMesh.mVertices[ 0 ] ) );
314 quadIndices.SetData( const_cast< unsigned int* >( &meshRecord.mMesh.mIndices[ 0 ] ) );
316 Geometry quadGeometry = Geometry::New();
317 quadGeometry.AddVertexBuffer( quadVertices );
318 quadGeometry.SetIndexBuffer( quadIndices );
320 Material material = mGlyphManager.GetMaterial( meshRecord.mAtlasId );
321 Dali::Renderer renderer = Dali::Renderer::New( quadGeometry, material );
322 renderer.SetDepthIndex( mDepth );
323 Actor actor = Actor::New();
324 actor.AddRenderer( renderer );
325 actor.SetSize( 1.0f, 1.0f );
326 actor.SetColor( meshRecord.mColor );
328 if ( meshRecord.mIsUnderline )
330 actor.SetColorMode( USE_OWN_COLOR );
334 actor.SetColorMode( USE_OWN_MULTIPLY_PARENT_COLOR );
339 void StitchTextMesh( std::vector< MeshRecord >& meshContainer,
340 AtlasManager::Mesh2D& newMesh,
341 Vector< Extent >& extents,
342 const Vector4& color,
344 float underlinePosition,
345 float underlineThickness,
346 AtlasManager::AtlasSlot& slot )
350 float left = newMesh.mVertices[ 0 ].mPosition.x;
351 float right = newMesh.mVertices[ 1 ].mPosition.x;
353 // Check to see if there's a mesh data object that references the same atlas ?
355 for ( std::vector< MeshRecord >::iterator mIt = meshContainer.begin(); mIt != meshContainer.end(); ++mIt, ++index )
357 if ( slot.mAtlasId == mIt->mAtlasId && color == mIt->mColor )
359 // Stitch the mesh to the existing mesh and adjust any extents
360 mGlyphManager.StitchMesh( mIt->mMesh, newMesh );
361 AdjustExtents( extents,
368 underlineThickness );
373 // No mesh data object currently exists that references this atlas, so create a new one
374 MeshRecord meshRecord;
375 meshRecord.mAtlasId = slot.mAtlasId;
376 meshRecord.mMesh = newMesh;
377 meshRecord.mColor = color;
378 meshRecord.mIsUnderline = false;
379 meshContainer.push_back( meshRecord );
381 // Adjust extents for this new meshrecord
382 AdjustExtents( extents,
384 meshContainer.size() - 1u,
389 underlineThickness );
394 void AdjustExtents( Vector< Extent >& extents,
395 std::vector< MeshRecord>& meshRecords,
400 float underlinePosition,
401 float underlineThickness )
403 bool foundExtent = false;
404 for ( Vector< Extent >::Iterator eIt = extents.Begin(); eIt != extents.End(); ++eIt )
406 if ( Equals( baseLine, eIt->mBaseLine ) )
409 if ( left < eIt->mLeft )
413 if ( right > eIt->mRight )
418 if ( underlinePosition > eIt->mUnderlinePosition )
420 eIt->mUnderlinePosition = underlinePosition;
422 if ( underlineThickness > eIt->mUnderlineThickness )
424 eIt->mUnderlineThickness = underlineThickness;
432 extent.mRight = right;
433 extent.mBaseLine = baseLine;
434 extent.mUnderlinePosition = underlinePosition;
435 extent.mUnderlineThickness = underlineThickness;
436 extent.mMeshRecordIndex = index;
437 extents.PushBack( extent );
441 void RemoveText( const Vector<GlyphInfo>& glyphs )
443 Vector< CheckEntry > checked;
444 CheckEntry checkEntry;
446 for ( Vector< TextCacheEntry >::Iterator tCit = mTextCache.Begin(); tCit != mTextCache.End(); ++tCit )
448 uint32_t index = tCit->mIndex;
449 uint32_t fontId = tCit->mFontId;
451 // Check that this character has not already been checked...
452 bool wasChecked = false;
453 for ( Vector< CheckEntry >::Iterator cEit = checked.Begin(); cEit != checked.End(); ++cEit )
455 if ( fontId == cEit->mFontId && index == cEit->mIndex )
464 int32_t newCount = 0;
465 int32_t oldCount = 0;
467 // How many times does this character occur in the old text ?
468 for ( Vector< TextCacheEntry >::Iterator oTcit = mTextCache.Begin(); oTcit != mTextCache.End(); ++oTcit )
470 if ( fontId == oTcit->mFontId && index == oTcit->mIndex )
476 // And how many times in the new ?
477 for ( Vector< GlyphInfo >::Iterator cGit = glyphs.Begin(); cGit != glyphs.End(); ++cGit )
479 if ( fontId == cGit->fontId && index == cGit->index )
484 mGlyphManager.AdjustReferenceCount( fontId, tCit->mImageId, newCount - oldCount );
485 checkEntry.mIndex = index;
486 checkEntry.mFontId = fontId;
487 checked.PushBack( checkEntry );
490 mTextCache.Resize( 0 );
493 void CalculateBlocksSize( const Vector<GlyphInfo>& glyphs )
495 MaxBlockSize maxBlockSize;
496 for ( uint32_t i = 0; i < glyphs.Size(); ++i )
498 FontId fontId = glyphs[ i ].fontId;
499 bool foundFont = false;
500 for ( uint32_t j = 0; j < mBlockSizes.size(); ++j )
502 if ( mBlockSizes[ j ].mFontId == fontId )
509 FontMetrics fontMetrics;
510 mFontClient.GetFontMetrics( fontId, fontMetrics );
511 maxBlockSize.mNeededBlockWidth = static_cast< uint32_t >( fontMetrics.height );
512 maxBlockSize.mNeededBlockHeight = static_cast< uint32_t >( fontMetrics.height );
513 maxBlockSize.mFontId = fontId;
514 mBlockSizes.push_back( maxBlockSize );
519 void GenerateUnderlines( std::vector< MeshRecord>& meshRecords,
520 Vector< Extent >& extents,
521 const Vector4& underlineColor,
522 const Vector4& textColor )
524 AtlasManager::Mesh2D newMesh;
525 unsigned short faceIndex = 0;
526 for ( Vector< Extent >::ConstIterator eIt = extents.Begin(); eIt != extents.End(); ++eIt )
528 AtlasManager::Vertex2D vert;
529 uint32_t index = eIt->mMeshRecordIndex;
530 Vector2 uv = mGlyphManager.GetAtlasSize( meshRecords[ index ].mAtlasId );
532 // Make sure we don't hit texture edge for single pixel texture ( filled pixel is in top left of every atlas )
533 float u = HALF / uv.x;
534 float v = HALF / uv.y;
535 float thickness = eIt->mUnderlineThickness;
536 float baseLine = eIt->mBaseLine + eIt->mUnderlinePosition - ( thickness * HALF );
537 float tlx = eIt->mLeft;
538 float brx = eIt->mRight;
540 vert.mPosition.x = tlx;
541 vert.mPosition.y = baseLine;
542 vert.mTexCoords.x = ZERO;
543 vert.mTexCoords.y = ZERO;
544 newMesh.mVertices.PushBack( vert );
546 vert.mPosition.x = brx;
547 vert.mPosition.y = baseLine;
548 vert.mTexCoords.x = u;
549 newMesh.mVertices.PushBack( vert );
551 vert.mPosition.x = tlx;
552 vert.mPosition.y = baseLine + thickness;
553 vert.mTexCoords.x = ZERO;
554 vert.mTexCoords.y = v;
555 newMesh.mVertices.PushBack( vert );
557 vert.mPosition.x = brx;
558 vert.mPosition.y = baseLine + thickness;
559 vert.mTexCoords.x = u;
560 newMesh.mVertices.PushBack( vert );
562 // Six indices in counter clockwise winding
563 newMesh.mIndices.PushBack( faceIndex + 1u );
564 newMesh.mIndices.PushBack( faceIndex );
565 newMesh.mIndices.PushBack( faceIndex + 2u );
566 newMesh.mIndices.PushBack( faceIndex + 2u );
567 newMesh.mIndices.PushBack( faceIndex + 3u );
568 newMesh.mIndices.PushBack( faceIndex + 1u );
571 if ( underlineColor == textColor )
573 mGlyphManager.StitchMesh( meshRecords[ index ].mMesh, newMesh );
578 record.mMesh = newMesh;
579 record.mAtlasId = meshRecords[ index ].mAtlasId;
580 record.mColor = underlineColor;
581 record.mIsUnderline = true;
582 meshRecords.push_back( record );
587 Actor GenerateShadow( MeshRecord& meshRecord,
588 const Vector2& shadowOffset,
589 const Vector4& shadowColor )
591 // Scan vertex buffer to determine width and height of effect buffer needed
592 const Vector< AtlasManager::Vertex2D >& verts = meshRecord.mMesh.mVertices;
593 float tlx = verts[ 0 ].mPosition.x;
594 float tly = verts[ 0 ].mPosition.y;
598 for ( uint32_t i = 0; i < verts.Size(); ++i )
600 if ( verts[ i ].mPosition.x < tlx )
602 tlx = verts[ i ].mPosition.x;
604 if ( verts[ i ].mPosition.y < tly )
606 tly = verts[ i ].mPosition.y;
608 if ( verts[ i ].mPosition.x > brx )
610 brx = verts[ i ].mPosition.x;
612 if ( verts[ i ].mPosition.y > bry )
614 bry = verts[ i ].mPosition.y;
618 float width = brx - tlx;
619 float height = bry - tly;
620 float divWidth = TWO / width;
621 float divHeight = TWO / height;
623 // Create a buffer to render to
624 meshRecord.mBuffer = FrameBufferImage::New( width, height );
626 // We will render a quad into this buffer
627 unsigned int indices[ 6 ] = { 1, 0, 2, 2, 3, 1 };
628 PropertyBuffer quadVertices = PropertyBuffer::New( mQuadVertexFormat, 4u );
629 PropertyBuffer quadIndices = PropertyBuffer::New( mQuadIndexFormat, sizeof(indices)/sizeof(indices[0]) );
631 AtlasManager::Vertex2D vertices[ 4 ] = {
632 { Vector2( tlx + shadowOffset.x, tly + shadowOffset.y ), Vector2( ZERO, ZERO ) },
633 { Vector2( brx + shadowOffset.x, tly + shadowOffset.y ), Vector2( ONE, ZERO ) },
634 { Vector2( tlx + shadowOffset.x, bry + shadowOffset.y ), Vector2( ZERO, ONE ) },
635 { Vector2( brx + shadowOffset.x, bry + shadowOffset.y ), Vector2( ONE, ONE ) } };
637 quadVertices.SetData( vertices );
638 quadIndices.SetData( indices );
640 Geometry quadGeometry = Geometry::New();
641 quadGeometry.AddVertexBuffer( quadVertices );
642 quadGeometry.SetIndexBuffer( quadIndices );
644 Sampler sampler = Sampler::New( meshRecord.mBuffer, "sTexture" );
645 Material material = Material::New( mGlyphManager.GetEffectBufferShader() );
646 material.AddSampler( sampler );
648 Dali::Renderer renderer = Dali::Renderer::New( quadGeometry, material );
650 // Ensure shadow is behind the text...
651 renderer.SetDepthIndex( mDepth + CONTENT_DEPTH_INDEX - 1 );
652 Actor actor = Actor::New();
653 actor.AddRenderer( renderer );
654 actor.SetSize( 1.0f, 1.0f );
656 // Create a sub actor to render the source with normalized vertex positions
657 Vector< AtlasManager::Vertex2D > normVertexList;
658 for ( uint32_t i = 0; i < verts.Size(); ++i )
660 AtlasManager::Vertex2D vertex = verts[ i ];
661 vertex.mPosition.x = ( ( vertex.mPosition.x - tlx ) * divWidth ) - ONE;
662 vertex.mPosition.y = ( ( vertex.mPosition.y - tly ) * divHeight ) - ONE;
663 normVertexList.PushBack( vertex );
666 PropertyBuffer normVertices = PropertyBuffer::New( mQuadVertexFormat, normVertexList.Size() );
667 PropertyBuffer normIndices = PropertyBuffer::New( mQuadIndexFormat, meshRecord.mMesh.mIndices.Size() );
668 normVertices.SetData( const_cast< AtlasManager::Vertex2D* >( &normVertexList[ 0 ] ) );
669 normIndices.SetData( const_cast< unsigned int* >( &meshRecord.mMesh.mIndices[ 0 ] ) );
671 Geometry normGeometry = Geometry::New();
672 normGeometry.AddVertexBuffer( normVertices );
673 normGeometry.SetIndexBuffer( normIndices );
675 Material normMaterial = Material::New( mGlyphManager.GetGlyphShadowShader() );
676 Sampler normSampler = mGlyphManager.GetSampler( meshRecord.mAtlasId );
677 normMaterial.AddSampler( normSampler );
678 Dali::Renderer normRenderer = Dali::Renderer::New( normGeometry, normMaterial );
679 Actor subActor = Actor::New();
680 subActor.AddRenderer( normRenderer );
681 subActor.SetSize( 1.0f, 1.0f );
682 subActor.SetColorMode( USE_OWN_MULTIPLY_PARENT_COLOR );
683 subActor.SetColor( shadowColor );
685 // Create a render task to render the effect
686 RenderTask task = Stage::GetCurrent().GetRenderTaskList().CreateTask();
687 task.SetTargetFrameBuffer( meshRecord.mBuffer );
688 task.SetSourceActor( subActor );
689 task.SetClearEnabled( true );
690 task.SetClearColor( Vector4::ZERO );
691 task.SetExclusive( true );
692 task.SetRefreshRate( RenderTask::REFRESH_ONCE );
693 task.FinishedSignal().Connect( this, &AtlasRenderer::Impl::RenderComplete );
694 actor.Add( subActor );
699 void RenderComplete( RenderTask& renderTask )
701 // Disconnect and remove this single shot render task
702 renderTask.FinishedSignal().Disconnect( this, &AtlasRenderer::Impl::RenderComplete );
703 Stage::GetCurrent().GetRenderTaskList().RemoveTask( renderTask );
705 // Get the actor used for render to buffer and remove it from the parent
706 Actor renderActor = renderTask.GetSourceActor();
709 Actor parent = renderActor.GetParent();
712 parent.Remove( renderActor );
717 Actor mActor; ///< The actor parent which renders the text
718 AtlasGlyphManager mGlyphManager; ///< Glyph Manager to handle upload and caching
719 TextAbstraction::FontClient mFontClient; ///> The font client used to supply glyph information
720 std::vector< MaxBlockSize > mBlockSizes; ///> Maximum size needed to contain a glyph in a block within a new atlas
721 std::vector< uint32_t > mFace; ///> Face indices for a quad
722 Vector< TextCacheEntry > mTextCache;
723 Property::Map mQuadVertexFormat;
724 Property::Map mQuadIndexFormat;
728 Text::RendererPtr AtlasRenderer::New()
730 DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Text::AtlasRenderer::New()\n" );
732 return Text::RendererPtr( new AtlasRenderer() );
735 Actor AtlasRenderer::Render( Text::ViewInterface& view, unsigned int depth )
737 UnparentAndReset( mImpl->mActor );
739 Length numberOfGlyphs = view.GetNumberOfGlyphs();
741 if( numberOfGlyphs > 0u )
743 Vector<GlyphInfo> glyphs;
744 glyphs.Resize( numberOfGlyphs );
746 std::vector<Vector2> positions;
747 positions.resize( numberOfGlyphs );
749 numberOfGlyphs = view.GetGlyphs( glyphs.Begin(),
753 glyphs.Resize( numberOfGlyphs );
754 positions.resize( numberOfGlyphs );
756 mImpl->AddGlyphs( positions,
759 view.GetShadowOffset(),
760 view.GetShadowColor(),
761 view.IsUnderlineEnabled(),
762 view.GetUnderlineColor(),
763 view.GetUnderlineHeight(),
767 return mImpl->mActor;
770 AtlasRenderer::AtlasRenderer()
776 AtlasRenderer::~AtlasRenderer()
778 Vector< GlyphInfo > emptyGlyphs;
779 mImpl->RemoveText( emptyGlyphs );