const uint32_t SINGLE_PIXEL_PADDING( 1u );
const uint32_t DOUBLE_PIXEL_PADDING( SINGLE_PIXEL_PADDING << 1 );
Toolkit::AtlasManager::AtlasSize EMPTY_SIZE;
+
+ bool IsBlockSizeSufficient( uint32_t width, uint32_t height, uint32_t requiredBlockWidth, uint32_t requiredBlockHeight )
+ {
+ return ( width + DOUBLE_PIXEL_PADDING <= requiredBlockWidth ) && ( height + DOUBLE_PIXEL_PADDING <= requiredBlockHeight );
+ }
}
AtlasManager::AtlasManager()
}
// Search current atlases to see if there is a good match
- while( !foundAtlas && index < mAtlasList.size() )
+ while( ( 0u == foundAtlas ) && ( index < mAtlasList.size() ) )
{
foundAtlas = CheckAtlas( index, width, height, pixelFormat );
++index;
}
// If we can't find a suitable atlas then check the policy to determine action
- if ( !foundAtlas-- )
+ if ( 0u == foundAtlas )
{
if ( Toolkit::AtlasManager::FAIL_ON_ADD_CREATES == mAddFailPolicy )
{
- foundAtlas = CreateAtlas( mNewAtlasSize, pixelFormat );
- if ( !foundAtlas-- )
+ if ( IsBlockSizeSufficient( width, height, mNewAtlasSize.mBlockWidth, mNewAtlasSize.mBlockHeight ) ) // Checks if image fits within the atlas blocks
{
- DALI_LOG_ERROR("Failed to create an atlas of %i x %i blocksize: %i x %i.\n",
- mNewAtlasSize.mWidth,
- mNewAtlasSize.mHeight,
- mNewAtlasSize.mBlockWidth,
- mNewAtlasSize.mBlockHeight );
- return created;
+ foundAtlas = CreateAtlas( mNewAtlasSize, pixelFormat ); // Creating atlas with mNewAtlasSize, may not be the needed size!
+ if ( 0u == foundAtlas )
+ {
+ DALI_LOG_ERROR("Failed to create an atlas of %i x %i blocksize: %i x %i.\n",
+ mNewAtlasSize.mWidth,
+ mNewAtlasSize.mHeight,
+ mNewAtlasSize.mBlockWidth,
+ mNewAtlasSize.mBlockHeight );
+ return false;
+ }
+ else
+ {
+ created = true;
+ }
}
- created = true;
- foundAtlas = CheckAtlas( foundAtlas, width, height, pixelFormat );
}
- if ( !foundAtlas-- || Toolkit::AtlasManager::FAIL_ON_ADD_FAILS == mAddFailPolicy )
+ if ( ( 0u == foundAtlas ) || Toolkit::AtlasManager::FAIL_ON_ADD_FAILS == mAddFailPolicy )
{
- // Haven't found an atlas for this image!!!!!!
+ // Haven't found an atlas for this image ( may have failed to add image to atlas )
DALI_LOG_ERROR("Failed to create an atlas under current policy.\n");
- return created;
+ return false;
}
}
+ foundAtlas--; // Atlas created successfully, decrement by 1 to get <vector> index (starts at 0 not 1)
+
// Work out which the block we're going to use
// Is there currently a next free block available ?
if ( mAtlasList[ foundAtlas ].mAvailableBlocks )
desc.mImageWidth = width;
desc.mImageHeight = height;
- desc.mAtlasId = foundAtlas + 1u;
+ desc.mAtlasId = foundAtlas + 1u; // Ids start from 1 not the 0 index
desc.mCount = 1u;
// See if there's a previously freed image ID that we can assign to this new image
mImageList[ imageId - 1u ] = desc;
slot.mImageId = imageId;
}
- slot.mAtlasId = foundAtlas + 1u;
+ slot.mAtlasId = foundAtlas + 1u; // Ids start from 1 not the 0 index
// Upload the buffer image into the atlas
UploadImage( image, desc );
AtlasManager::SizeType result = 0u;
if ( pixelFormat == mAtlasList[ atlas ].mPixelFormat )
{
- // Check to see if the image will fit in these blocks, if not we'll need to create a new atlas
- if ( ( mAtlasList[ atlas ].mAvailableBlocks + mAtlasList[ atlas ].mFreeBlocksList.Size() )
- && width + DOUBLE_PIXEL_PADDING <= mAtlasList[ atlas ].mSize.mBlockWidth
- && height + DOUBLE_PIXEL_PADDING <= mAtlasList[ atlas ].mSize.mBlockHeight )
+ // Check to see if the image will fit in these blocks
+
+ const SizeType availableBlocks = mAtlasList[ atlas ].mAvailableBlocks + mAtlasList[ atlas ].mFreeBlocksList.Size();
+
+ if ( availableBlocks && IsBlockSizeSufficient( width, height,mAtlasList[ atlas ].mSize.mBlockWidth, mAtlasList[ atlas ].mSize.mBlockHeight ) )
{
- result = atlas + 1u;
+ result = atlas + 1u; // Atlas ids start from 1 not 0
}
}
return result;
lastUnderlinedFontId = glyph.fontId;
} // underline
- if( !mGlyphManager.IsCached( glyph.fontId, glyph.index, slot ) )
+ bool glyphNotCached = !mGlyphManager.IsCached( glyph.fontId, glyph.index, slot ); // Check FontGlyphRecord vector for entry with glyph index and fontId
+
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "AddGlyphs fontID[%u] glyphIndex[%u] [%s]\n", glyph.fontId, glyph.index, (glyphNotCached)?"not cached":"cached" );
+
+ if( glyphNotCached )
{
- // Select correct size for new atlas if needed....?
- if( lastFontId != glyph.fontId )
+ MaxBlockSize& blockSize = mBlockSizes[currentBlockSize];
+
+ if ( lastFontId != glyph.fontId )
{
uint32_t index = 0u;
+ // Looks through all stored block sizes until finds the one which mataches required glyph font it. Ensures new atlas block size will match existing for same font id.
+ // CalculateBlocksSize() above ensures a block size entry exists.
for( std::vector<MaxBlockSize>::const_iterator it = mBlockSizes.begin(),
endIt = mBlockSizes.end();
it != endIt;
++it, ++index )
{
- const MaxBlockSize& blockSize = *it;
- if( blockSize.mFontId == glyph.fontId )
+ const MaxBlockSize& blockSizeEntry = *it;
+ if( blockSizeEntry.mFontId == glyph.fontId )
{
- currentBlockSize = index;
- mGlyphManager.SetNewAtlasSize( DEFAULT_ATLAS_WIDTH,
- DEFAULT_ATLAS_HEIGHT,
- blockSize.mNeededBlockWidth,
- blockSize.mNeededBlockHeight );
+ blockSize = mBlockSizes[index];
}
}
}
if( bitmap )
{
- MaxBlockSize& blockSize = mBlockSizes[currentBlockSize];
-
// Ensure that the next image will fit into the current block size
- bool setSize = false;
if( bitmap.GetWidth() > blockSize.mNeededBlockWidth )
{
- setSize = true;
blockSize.mNeededBlockWidth = bitmap.GetWidth();
}
+
if( bitmap.GetHeight() > blockSize.mNeededBlockHeight )
{
- setSize = true;
blockSize.mNeededBlockHeight = bitmap.GetHeight();
}
- if( setSize )
- {
- mGlyphManager.SetNewAtlasSize( DEFAULT_ATLAS_WIDTH,
- DEFAULT_ATLAS_HEIGHT,
- blockSize.mNeededBlockWidth,
- blockSize.mNeededBlockHeight );
- }
+ // If CheckAtlas in AtlasManager::Add can't fit the bitmap in the current atlas it will create a new atlas
+
+ // Setting the block size and size of new atlas does not mean a new one will be created. An existing atlas may still surffice.
+ mGlyphManager.SetNewAtlasSize( DEFAULT_ATLAS_WIDTH,
+ DEFAULT_ATLAS_HEIGHT,
+ blockSize.mNeededBlockWidth,
+ blockSize.mNeededBlockHeight );
// Locate a new slot for our glyph
- mGlyphManager.Add( glyph, bitmap, slot );
+ mGlyphManager.Add( glyph, bitmap, slot ); // slot will be 0 is glyph not added
}
}
else
// Move the origin (0,0) of the mesh to the center of the actor
const Vector2 position = *( positionsBuffer + i ) - halfTextSize - lineOffsetPosition;
- // Generate mesh data for this quad, plugging in our supplied position
- AtlasManager::Mesh2D newMesh;
- mGlyphManager.GenerateMeshData( slot.mImageId, position, newMesh );
- textCacheEntry.mFontId = glyph.fontId;
- textCacheEntry.mImageId = slot.mImageId;
- textCacheEntry.mIndex = glyph.index;
- newTextCache.PushBack( textCacheEntry );
-
- AtlasManager::Vertex2D* verticesBuffer = newMesh.mVertices.Begin();
-
- // Get the color of the character.
- const ColorIndex colorIndex = useDefaultColor ? 0u : *( colorIndicesBuffer + i );
- const Vector4& color = ( useDefaultColor || ( 0u == colorIndex ) ) ? defaultColor : *( colorsBuffer + colorIndex - 1u );
-
- for( unsigned int index = 0u, size = newMesh.mVertices.Count();
- index < size;
- ++index )
+ if ( 0u != slot.mImageId ) // invalid slot id, glyph has failed to be added to atlas
{
- AtlasManager::Vertex2D& vertex = *( verticesBuffer + index );
+ // Generate mesh data for this quad, plugging in our supplied position
+ AtlasManager::Mesh2D newMesh;
+ mGlyphManager.GenerateMeshData( slot.mImageId, position, newMesh );
+ textCacheEntry.mFontId = glyph.fontId;
+ textCacheEntry.mImageId = slot.mImageId;
+ textCacheEntry.mIndex = glyph.index;
+ newTextCache.PushBack( textCacheEntry );
+
+ AtlasManager::Vertex2D* verticesBuffer = newMesh.mVertices.Begin();
+
+ // Get the color of the character.
+ const ColorIndex colorIndex = useDefaultColor ? 0u : *( colorIndicesBuffer + i );
+ const Vector4& color = ( useDefaultColor || ( 0u == colorIndex ) ) ? defaultColor : *( colorsBuffer + colorIndex - 1u );
+
+ for( unsigned int index = 0u, size = newMesh.mVertices.Count();
+ index < size;
+ ++index )
+ {
+ AtlasManager::Vertex2D& vertex = *( verticesBuffer + index );
- // Set the color of the vertex.
- vertex.mColor = color;
- }
+ // Set the color of the vertex.
+ vertex.mColor = color;
+ }
- // Find an existing mesh data object to attach to ( or create a new one, if we can't find one using the same atlas)
- StitchTextMesh( meshContainer,
- newMesh,
- extents,
- position.y + glyph.yBearing,
- underlineGlyph,
- currentUnderlinePosition,
- currentUnderlineThickness,
- slot );
- lastFontId = glyph.fontId;
+ // Find an existing mesh data object to attach to ( or create a new one, if we can't find one using the same atlas)
+ StitchTextMesh( meshContainer,
+ newMesh,
+ extents,
+ position.y + glyph.yBearing,
+ underlineGlyph,
+ currentUnderlinePosition,
+ currentUnderlineThickness,
+ slot );
+
+ lastFontId = glyph.fontId; // Prevents searching for existing blocksizes when string of the same fontId.
+ }
}
} // glyphs
blockIt != blockEndIt;
++blockIt )
{
- if( (*blockIt).mFontId == fontId )
+ if( (*blockIt).mFontId == fontId ) // Different size fonts will have a different fontId
{
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Text::AtlasRenderer::CalculateBlocksSize match found fontID(%u) glyphIndex(%u)\n", fontId, (*glyphIt).index );
foundFont = true;
break;
}
maxBlockSize.mNeededBlockWidth = static_cast< uint32_t >( fontMetrics.height );
maxBlockSize.mNeededBlockHeight = maxBlockSize.mNeededBlockWidth;
maxBlockSize.mFontId = fontId;
-
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Text::AtlasRenderer::CalculateBlocksSize New font with no matched blocksize, setting blocksize[%u]\n", maxBlockSize.mNeededBlockWidth );
mBlockSizes.push_back( maxBlockSize );
}
}
projects / platform / core / uifw / dali-toolkit.git / commitdiff