1 #ifndef DALI_TOOLKIT_TEXTURE_MANAGER_IMPL_H
2 #define DALI_TOOLKIT_TEXTURE_MANAGER_IMPL_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.
25 #include <dali/public-api/common/dali-vector.h>
26 #include <dali/public-api/object/ref-object.h>
27 #include <dali/public-api/rendering/texture-set.h>
28 #include <dali/devel-api/common/owner-container.h>
29 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
32 #include <dali-toolkit/devel-api/image-loader/async-image-loader-devel.h>
33 #include <dali-toolkit/devel-api/image-loader/image-atlas.h>
34 #include <dali-toolkit/public-api/image-loader/async-image-loader.h>
35 #include <dali-toolkit/internal/visuals/texture-upload-observer.h>
36 #include <dali-toolkit/internal/visuals/visual-url.h>
37 #include <dali-toolkit/internal/helpers/round-robin-container-view.h>
38 #include <dali-toolkit/internal/image-loader/async-image-loader-impl.h>
49 class ImageAtlasManager;
50 typedef IntrusivePtr<ImageAtlasManager> ImageAtlasManagerPtr;
53 * The TextureManager provides a common Image loading API for Visuals.
55 * The TextureManager is responsible for providing sync, async, atlased and non-atlased loads.
56 * Texture caching is provided and performed when possible.
57 * Broken Images are automatically provided on load failure.
59 class TextureManager : public ConnectionTracker
63 typedef int32_t TextureId; ///< The TextureId type. This is used as a handle to refer to a particular Texture.
64 static const int INVALID_TEXTURE_ID = -1; ///< Used to represent a null TextureId or error
67 * Whether the texture should be atlased or uploaded into it's own GPU texture
76 * Whether the pixel data should be kept in TextureManager, or uploaded for rendering
85 * Whether the texture should be loaded synchronously or asynchronously.
94 * @brief The LoadState Enumeration represents the current state of a particular Texture's life-cycle.
98 NOT_STARTED, ///< Default
99 LOADING, ///< Loading has been started, but not finished.
100 LOAD_FINISHED, ///< Loading has finished. (for CPU storage only)
101 WAITING_FOR_MASK,///< Loading has finished, but waiting for mask image
102 UPLOADED, ///< Uploaded and ready. (For GPU upload only)
103 CANCELLED, ///< Removed before loading completed
104 LOAD_FAILED ///< Async loading failed, e.g. connection problem
108 * @brief Types of reloading policies
110 enum class ReloadPolicy
112 CACHED = 0, ///< Loads cached texture if it exists.
113 FORCED ///< Forces reloading of texture.
117 * @brief Whether to multiply alpha into color channels on load
119 enum class MultiplyOnLoad
121 LOAD_WITHOUT_MULTIPLY = 0, ///< Don't modify the image
122 MULTIPLY_ON_LOAD ///< Multiply alpha into color channels on load
130 ~MaskingData() = default;
132 VisualUrl mAlphaMaskUrl;
133 TextureManager::TextureId mAlphaMaskId;
134 float mContentScaleFactor;
137 using MaskingDataPointer = std::unique_ptr<MaskingData>;
147 ~TextureManager() = default;
150 // TextureManager Main API:
153 * @brief Requests an image load of the given URL.
155 * The parameters are used to specify how the image is loaded.
156 * The observer has the UploadComplete method called when the load is ready.
158 * When the client has finished with the Texture, Remove() should be called.
160 * @param[in] url The URL of the image to load
161 * @param[in] desiredSize The size the image is likely to appear at. This can be set to 0,0 for automatic
162 * @param[in] fittingMode The FittingMode to use
163 * @param[in] samplingMode The SamplingMode to use
164 * @param[in] maskInfo Mask info structure
165 * @param[in] synchronousLoading true if the URL should be loaded synchronously
166 * @param[out] textureId, The textureId of the URL
167 * @param[out] textureRect The rectangle within the texture atlas that this URL occupies
168 * @param[in,out] atlasingStatus Set to USE_ATLAS to attempt atlasing. If atlasing fails, the image will still
169 * be loaded, and marked successful, but this will be set to false.
170 * If atlasing succeeds, this will be set to true.
171 * @param[out] loadingStatus The loading status of the texture
172 * @param[in] wrapModeU Horizontal Wrap mode
173 * @param[in] wrapModeV Vertical Wrap mode
174 * @param[in] textureObserver The client object should inherit from this and provide the "UploadCompleted" virtual.
175 * This is called when an image load completes (or fails).
176 * @param[in] atlasObserver This is used if the texture is atlased, and will be called instead of
177 * textureObserver.UploadCompleted
178 * @param[in] imageAtlasManager The atlas manager to use for atlasing textures
179 * @param[in] orientationCorrection Whether to rotate image to match embedded orientation data
180 * @param[in] reloadPolicy Forces a reload of the texture even if already cached
181 * @param[in,out] preMultiplyOnLoad True if the image color should be multiplied by it's alpha. Set to false if the
182 * image has no alpha channel
184 * @return The texture set containing the image, or empty if still loading.
187 TextureSet LoadTexture( const VisualUrl& url,
188 Dali::ImageDimensions desiredSize,
189 Dali::FittingMode::Type fittingMode,
190 Dali::SamplingMode::Type samplingMode,
191 const MaskingDataPointer& maskInfo,
192 bool synchronousLoading,
193 TextureManager::TextureId& textureId,
194 Vector4& textureRect,
195 bool& atlasingStatus,
197 Dali::WrapMode::Type wrapModeU,
198 Dali::WrapMode::Type wrapModeV,
199 TextureUploadObserver* textureObserver,
200 AtlasUploadObserver* atlasObserver,
201 ImageAtlasManagerPtr imageAtlasManager,
202 bool orientationCorrection,
203 TextureManager::ReloadPolicy reloadPolicy,
204 MultiplyOnLoad& preMultiplyOnLoad );
207 * @brief Requests an image load of the given URL.
209 * The parameters are used to specify how the image is loaded.
210 * The observer has the UploadComplete method called when the load is ready.
212 * When the client has finished with the Texture, Remove() should be called.
214 * @param[in] url The URL of the image to load
215 * @param[in] desiredSize The size the image is likely to appear at. This can be set to 0,0 for automatic
216 * @param[in] fittingMode The FittingMode to use
217 * @param[in] samplingMode The SamplingMode to use
218 * @param[in] useAtlasing Set to USE_ATLAS to attempt atlasing. If atlasing fails, the image will still be loaded, and marked successful,
219 * but "useAtlasing" will be set to false in the "UploadCompleted" callback from the TextureManagerUploadObserver.
220 * @param[in] observer The client object should inherit from this and provide the "UploadCompleted" virtual.
221 * This is called when an image load completes (or fails).
222 * @param[in] orientationCorrection Whether to rotate image to match embedded orientation data
223 * @param[in] reloadPolicy Forces a reload of the texture even if already cached
224 * @param[in,out] preMultiplyOnLoad True if the image color should be multiplied by it's alpha. Set to false if the image has no alpha channel
225 * @return A TextureId to use as a handle to reference this Texture
227 TextureId RequestLoad( const VisualUrl& url,
228 const ImageDimensions desiredSize,
229 FittingMode::Type fittingMode,
230 Dali::SamplingMode::Type samplingMode,
231 const UseAtlas useAtlasing,
232 TextureUploadObserver* observer,
233 bool orientationCorrection,
234 TextureManager::ReloadPolicy reloadPolicy,
235 MultiplyOnLoad& preMultiplyOnLoad );
238 * @brief Requests an image load of the given URL, when the texture has
239 * have loaded, it will perform a blend with the image mask, and upload
240 * the blended texture.
242 * The parameters are used to specify how the image is loaded.
243 * The observer has the UploadComplete method called when the load is ready.
245 * When the client has finished with the Texture, Remove() should be called.
247 * @param[in] url The URL of the image to load
248 * @param[in] maskTextureId The texture id of an image to mask this with
249 * (can be INVALID if no masking required)
250 * @param[in] contentScale The scale factor to apply to the image before masking
251 * @param[in] desiredSize The size the image is likely to appear at. This can be set to 0,0 for automatic
252 * @param[in] fittingMode The FittingMode to use
253 * @param[in] samplingMode The SamplingMode to use
254 * @param[in] useAtlasing Set to USE_ATLAS to attempt atlasing. If atlasing fails, the image will still
255 * be loaded, and marked successful,
256 * but "useAtlasing" will be set to false in the "UploadCompleted" callback from
257 * the TextureManagerUploadObserver.
258 * @param[in] cropToMask Only used with masking, this will crop the scaled image to the mask size.
259 * If false, then the mask will be scaled to fit the image before being applied.
260 * @param[in] observer The client object should inherit from this and provide the "UploadCompleted"
262 * This is called when an image load completes (or fails).
263 * @param[in] orientationCorrection Whether to rotate image to match embedded orientation data
264 * @param[in] reloadPolicy Forces a reload of the texture even if already cached
265 * @param[in] preMultiplyOnLoad True if the image color should be multiplied by it's alpha. Set to false if the
266 * image has no alpha channel
267 * @return A TextureId to use as a handle to reference this Texture
269 TextureId RequestLoad( const VisualUrl& url,
270 TextureId maskTextureId,
272 const ImageDimensions desiredSize,
273 FittingMode::Type fittingMode,
274 Dali::SamplingMode::Type samplingMode,
275 const UseAtlas useAtlasing,
277 TextureUploadObserver* observer,
278 bool orientationCorrection,
279 TextureManager::ReloadPolicy reloadPolicy,
280 MultiplyOnLoad& preMultiplyOnLoad );
283 * Requests a masking image to be loaded. This mask is not uploaded to GL,
284 * instead, it is stored in CPU memory, and can be used for CPU blending.
286 TextureId RequestMaskLoad( const VisualUrl& maskUrl );
289 * @brief Remove a Texture from the TextureManager.
291 * Textures are cached and therefore only the removal of the last
292 * occurrence of a Texture will cause its removal internally.
294 * @param[in] textureId The ID of the Texture to remove.
296 void Remove( const TextureManager::TextureId textureId );
299 * Get the visualUrl associated with the texture id
301 const VisualUrl& GetVisualUrl( TextureId textureId );
304 * @brief Get the current state of a texture
305 * @param[in] textureId The texture id to query
306 * @return The loading state if the texture is valid, or NOT_STARTED if the textureId
309 LoadState GetTextureState( TextureId textureId );
312 * @brief Get the associated texture set if the texture id is valid
313 * @param[in] textureId The texture Id to look up
314 * @return the associated texture set, or an empty handle if textureId is not valid
316 TextureSet GetTextureSet( TextureId textureId );
319 * Adds an external texture to the texture manager
320 * @param[in] texture The texture to add
321 * @return string containing the URL for the texture
323 std::string AddExternalTexture( TextureSet& texture );
326 * Removes an external texture from texture manager
327 * @param[in] url The string containing the texture to remove
328 * @return handle to the texture
330 TextureSet RemoveExternalTexture( const std::string& url );
335 * @brief Requests an image load of the given URL, when the texture has
336 * have loaded, if there is a valid maskTextureId, it will perform a
337 * CPU blend with the mask, and upload the blend texture.
339 * The parameters are used to specify how the image is loaded.
340 * The observer has the UploadComplete method called when the load is ready.
342 * When the client has finished with the Texture, Remove() should be called.
344 * @param[in] url The URL of the image to load
345 * @param[in] maskTextureId The texture id of an image to use as a mask. If no mask is required, then set
346 * to INVALID_TEXTURE_ID
347 * @param[in] contentScale The scaling factor to apply to the content when masking
348 * @param[in] desiredSize The size the image is likely to appear at. This can be set to 0,0 for automatic
349 * @param[in] fittingMode The FittingMode to use
350 * @param[in] samplingMode The SamplingMode to use
351 * @param[in] useAtlasing Set to USE_ATLAS to attempt atlasing. If atlasing fails, the image will still be
352 * loaded, and marked successful, but "useAtlasing" will be set to false in the
353 * "UploadCompleted" callback from the TextureManagerUploadObserver.
354 * @param[in] cropToMask Whether to crop the target after masking, or scale the mask to the image before
356 * @param[in] storageType, Whether the pixel data is stored in the cache or uploaded to the GPU
357 * @param[in] observer The client object should inherit from this and provide the "UploadCompleted"
359 * This is called when an image load completes (or fails).
360 * @param[in] orientationCorrection Whether to rotate image to match embedded orientation data
361 * @param[in] reloadPolicy Forces a reload of the texture even if already cached
362 * @param[in] preMultiplyOnLoad True if the image color should be multiplied by it's alpha. Set to false if
364 * @return A TextureId to use as a handle to reference this Texture
366 TextureId RequestLoadInternal(
367 const VisualUrl& url,
368 TextureId maskTextureId,
370 const ImageDimensions desiredSize,
371 FittingMode::Type fittingMode,
372 Dali::SamplingMode::Type samplingMode,
375 StorageType storageType,
376 TextureUploadObserver* observer,
377 bool orientationCorrection,
378 TextureManager::ReloadPolicy reloadPolicy,
379 MultiplyOnLoad& preMultiplyOnLoad );
382 * @brief Get the current state of a texture
383 * @param[in] textureId The texture id to query
384 * @return The loading state if the texture is valid, or NOT_STARTED if the textureId
387 LoadState GetTextureStateInternal( TextureId textureId );
389 typedef size_t TextureHash; ///< The type used to store the hash used for Texture caching.
392 * @brief This struct is used to manage the life-cycle of Texture loading and caching.
396 TextureInfo( TextureId textureId,
397 TextureId maskTextureId,
398 const VisualUrl& url,
399 ImageDimensions desiredSize,
401 FittingMode::Type fittingMode,
402 Dali::SamplingMode::Type samplingMode,
403 bool loadSynchronously,
406 TextureManager::TextureHash hash,
407 bool orientationCorrection,
408 bool preMultiplyOnLoad )
410 desiredSize( desiredSize ),
411 useSize( desiredSize ),
412 atlasRect( 0.0f, 0.0f, 1.0f, 1.0f ), // Full atlas rectangle
413 textureId( textureId ),
414 maskTextureId( maskTextureId ),
416 scaleFactor( scaleFactor ),
417 referenceCount( 1u ),
418 loadState( NOT_STARTED ),
419 fittingMode( fittingMode ),
420 samplingMode( samplingMode ),
421 storageType( UPLOAD_TO_TEXTURE ),
422 loadSynchronously( loadSynchronously ),
423 useAtlas( useAtlas ),
424 cropToMask( cropToMask ),
425 orientationCorrection( true ),
426 preMultiplyOnLoad( preMultiplyOnLoad ),
427 preMultiplied( false )
432 * Container type used to store all observer clients of this Texture
434 typedef Dali::Vector< TextureUploadObserver* > ObserverListType;
436 ObserverListType observerList; ///< Container used to store all observer clients of this Texture
437 Toolkit::ImageAtlas atlas; ///< The atlas this Texture lays within (if any)
438 Devel::PixelBuffer pixelBuffer;///< The PixelBuffer holding the image data (May be empty after upload)
439 TextureSet textureSet; ///< The TextureSet holding the Texture
440 VisualUrl url; ///< The URL of the image
441 ImageDimensions desiredSize; ///< The size requested
442 ImageDimensions useSize; ///< The size used
443 Vector4 atlasRect; ///< The atlas rect used if atlased
444 TextureId textureId; ///< The TextureId associated with this Texture
445 TextureId maskTextureId; ///< The mask TextureId to be applied on load
446 TextureManager::TextureHash hash; ///< The hash used to cache this Texture
447 float scaleFactor; ///< The scale factor to apply to the Texture when masking
448 int16_t referenceCount; ///< The reference count of clients using this Texture
449 LoadState loadState:3; ///< The load state showing the load progress of the Texture
450 FittingMode::Type fittingMode:2; ///< The requested FittingMode
451 Dali::SamplingMode::Type samplingMode:3; ///< The requested SamplingMode
452 StorageType storageType:1; ///< CPU storage / GPU upload;
453 bool loadSynchronously:1; ///< True if synchronous loading was requested
454 UseAtlas useAtlas:1; ///< USE_ATLAS if an atlas was requested.
455 ///< This is updated to false if atlas is not used
456 bool cropToMask:1; ///< true if the image should be cropped to the mask size.
457 bool orientationCorrection:1; ///< true if the image should be rotated to match exif orientation data
458 bool preMultiplyOnLoad:1; ///< true if the image's color should be multiplied by it's alpha
459 bool preMultiplied:1; ///< true if the image's color was multiplied by it's alpha
465 * Struct to hold information about a requested Async load.
466 * This is used to look up a TextureManager::TextureId from the returned AsyncLoad Id.
468 struct AsyncLoadingInfo
470 AsyncLoadingInfo( TextureId textureId )
471 : textureId( textureId ),
476 TextureId textureId; ///< The external Texture Id assigned to this load
477 uint32_t loadId; ///< The load Id used by the async loader to reference this load
482 typedef std::deque<AsyncLoadingInfo> AsyncLoadingInfoContainerType; ///< The container type used to manage Asynchronous loads in progress
483 typedef std::vector<TextureInfo> TextureInfoContainerType; ///< The container type used to manage the life-cycle and caching of Textures
486 * @brief Used internally to initiate a load.
487 * @param[in] textureInfo The TextureInfo struct associated with the Texture
488 * @return True if the load was initiated
490 bool LoadTexture( TextureInfo& textureInfo );
493 * Add the observer to the observer list
494 * @param[in] textureInfo The TextureInfo struct associated with the texture
495 * observer The observer wishing to observe the texture upload
497 void ObserveTexture( TextureInfo & textureInfo, TextureUploadObserver* observer );
500 * @brief This signal handler is called when the async local loader finishes loading.
501 * @param[in] id This is the async image loaders Id
502 * @param[in] pixelBuffer The loaded image data
504 void AsyncLocalLoadComplete( uint32_t id, Devel::PixelBuffer pixelBuffer );
507 * @brief This signal handler is called when the async local loader finishes loading.
508 * @param[in] id This is the async image loaders Id
509 * @param[in] pixelBuffer The loaded image data
511 void AsyncRemoteLoadComplete( uint32_t id, Devel::PixelBuffer pixelBuffer );
514 * Common method to handle loading completion
515 * @param[in] container The Async loading container
516 * @param[in] id This is the async image loaders Id
517 * @param[in] pixelBuffer The loaded image data
519 void AsyncLoadComplete( AsyncLoadingInfoContainerType& container, uint32_t id, Devel::PixelBuffer pixelBuffer );
522 * @brief Performs Post-Load steps including atlasing.
523 * @param[in] textureInfo The struct associated with this Texture
524 * @param[in] pixelBuffer The image pixelBuffer
525 * @return True if successful
527 void PostLoad( TextureManager::TextureInfo& textureInfo, Devel::PixelBuffer& pixelBuffer );
530 * Check if there is a texture waiting to be masked. If there
531 * is then apply this mask and upload it.
532 * @param[in] maskTextureInfo The texture info of the mask that has just loaded.
534 void CheckForWaitingTexture( TextureInfo& maskTextureInfo );
537 * Apply the mask to the pixelBuffer.
538 * @param[in] pixelBuffer The pixelBuffer to apply the mask to
539 * @param[in] maskTextureId The texture id of the mask.
540 * @param[in] contentScale The factor to scale the content
541 * @param[in] cropToMask Whether to crop the content to the mask size
543 void ApplyMask( Devel::PixelBuffer& pixelBuffer, TextureId maskTextureId,
544 float contentScale, bool cropToMask );
547 * Upload the texture specified in pixelBuffer to the appropriate location
548 * @param[in] pixelBuffer The image data to upload
549 * @param[in] textureInfo The texture info containing the location to
552 void UploadTexture( Devel::PixelBuffer& pixelBuffer, TextureInfo& textureInfo );
555 * Mark the texture as complete, and inform observers
556 * @param[in] textureInfo The struct associated with this Texture
558 void UploadComplete( TextureInfo& textureInfo );
561 * Notify the current observers that the texture upload is complete,
562 * then remove the observers from the list.
563 * @param[in] textureInfo The struct associated with this Texture
564 * @param[in] success If the pixel data was retrieved successfully and uploaded to GPU
566 void NotifyObservers( TextureInfo& textureInfo, bool success );
569 * @brief Generates a new, unique TextureId
570 * @return A unique TextureId
572 TextureManager::TextureId GenerateUniqueTextureId();
575 * @brief Used to lookup an index into the TextureInfoContainer from a TextureId
576 * @param[in] textureId The TextureId to look up
577 * @return The cache index
579 int GetCacheIndexFromId( TextureId textureId );
583 * @brief Generates a hash for caching based on the input parameters.
584 * Only applies size, fitting mode andsampling mode if the size is specified.
585 * Only applies maskTextureId if it isn't INVALID_TEXTURE_ID
586 * Always applies useAtlas.
587 * @param[in] url The URL of the image to load
588 * @param[in] size The image size
589 * @param[in] fittingMode The FittingMode to use
590 * @param[in] samplingMode The SamplingMode to use
591 * @param[in] useAtlas True if atlased
592 * @param[in] maskTextureId The masking texture id (or INVALID_TEXTURE_ID)
593 * @return A hash of the provided data for caching.
595 TextureHash GenerateHash( const std::string& url, const ImageDimensions size,
596 const FittingMode::Type fittingMode,
597 const Dali::SamplingMode::Type samplingMode, const UseAtlas useAtlas,
598 TextureId maskTextureId,
599 MultiplyOnLoad preMultiplyOnLoad);
601 * @brief Looks up a cached texture by its hash.
602 * If found, the given parameters are used to check there is no hash-collision.
603 * @param[in] hash The hash to look up
604 * @param[in] url The URL of the image to load
605 * @param[in] size The image size
606 * @param[in] fittingMode The FittingMode to use
607 * @param[in] samplingMode The SamplingMode to use
608 * @param[in] useAtlas True if atlased
609 * @param[in] maskTextureId Optional texture ID to use to mask this image
610 * @return A TextureId of a cached Texture if found. Or INVALID_TEXTURE_ID if not found.
612 TextureManager::TextureId FindCachedTexture(
613 const TextureManager::TextureHash hash,
614 const std::string& url,
615 const ImageDimensions size,
616 const FittingMode::Type fittingMode,
617 const Dali::SamplingMode::Type samplingMode,
619 TextureId maskTextureId,
620 MultiplyOnLoad preMultiplyOnLoad);
625 * @brief Helper class to keep the relation between AsyncImageLoader and corresponding LoadingInfo container
627 class AsyncLoadingHelper : public ConnectionTracker
631 * @brief Create an AsyncLoadingHelper.
632 * @param[in] textureManager Reference to the texture manager
634 AsyncLoadingHelper(TextureManager& textureManager);
637 * @brief Load a new texture.
638 * @param[in] textureId TextureId to reference the texture that will be loaded
639 * @param[in] url The URL of the image to load
640 * @param[in] desiredSize The size the image is likely to appear at.
641 * This can be set to 0,0 for automatic
642 * @param[in] fittingMode The FittingMode to use
643 * @param[in] samplingMode The SamplingMode to use
644 * @param[in] orientationCorrection Whether to use image metadata to rotate or flip the image,
645 * e.g., from portrait to landscape
647 void Load(TextureId textureId,
648 const VisualUrl& url,
649 ImageDimensions desiredSize,
650 FittingMode::Type fittingMode,
651 SamplingMode::Type samplingMode,
652 bool orientationCorrection);
655 AsyncLoadingHelper(const AsyncLoadingHelper&) = delete;
656 AsyncLoadingHelper& operator=(const AsyncLoadingHelper&) = delete;
658 AsyncLoadingHelper(AsyncLoadingHelper&& rhs);
659 AsyncLoadingHelper& operator=(AsyncLoadingHelper&&rhs) = delete;
663 * @brief Main constructor that used by all other constructors
665 AsyncLoadingHelper(Toolkit::AsyncImageLoader loader,
666 TextureManager& textureManager,
667 AsyncLoadingInfoContainerType&& loadingInfoContainer);
670 * @brief Callback to be called when texture loading is complete, it passes the pixel buffer on to texture manager.
671 * @param[in] id Loader id
672 * @param[in] pixelBuffer Image data
674 void AsyncLoadComplete(uint32_t id, Devel::PixelBuffer pixelBuffer);
677 Toolkit::AsyncImageLoader mLoader;
678 TextureManager& mTextureManager;
679 AsyncLoadingInfoContainerType mLoadingInfoContainer;
682 struct ExternalTextureInfo
685 TextureSet textureSet;
691 * Deleted copy constructor.
693 TextureManager( const TextureManager& ) = delete;
696 * Deleted assignment operator.
698 TextureManager& operator=( const TextureManager& rhs ) = delete;
701 * This is called by the TextureManagerUploadObserver when an observer is destroyed.
702 * We use the callback to know when to remove an observer from our notify list.
703 * @param[in] observer The observer that generated the callback
705 void ObserverDestroyed( TextureUploadObserver* observer );
707 private: // Member Variables:
709 TextureInfoContainerType mTextureInfoContainer; ///< Used to manage the life-cycle and caching of Textures
710 RoundRobinContainerView< AsyncLoadingHelper > mAsyncLocalLoaders; ///< The Asynchronous image loaders used to provide all local async loads
711 RoundRobinContainerView< AsyncLoadingHelper > mAsyncRemoteLoaders; ///< The Asynchronous image loaders used to provide all remote async loads
712 std::vector< ExternalTextureInfo > mExternalTextures; ///< Externally provided textures
713 TextureId mCurrentTextureId; ///< The current value used for the unique Texture Id generation
719 } // namespace Toolkit
723 #endif // DALI_TOOLKIT_TEXTURE_MANAGER_IMPL_H