mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-05-01 00:09:58 -05:00
Alexander Bock
104 lines
4.7 KiB
C++
104 lines
4.7 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2018 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_MODULE_GLOBEBROWSING___TEXT_TILE_PROVIDER___H__
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#define __OPENSPACE_MODULE_GLOBEBROWSING___TEXT_TILE_PROVIDER___H__
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#include <modules/globebrowsing/globebrowsingmodule.h>
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#include <modules/globebrowsing/tile/tileprovider/tileprovider.h>
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#include <modules/globebrowsing/cache/lrucache.h>
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#include <modules/globebrowsing/tile/tiletextureinitdata.h>
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#include <ghoul/opengl/ghoul_gl.h>
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namespace ghoul::fontrendering {
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class Font;
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class FontRenderer;
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} // namespace ghoul::fontrendering
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namespace openspace::globebrowsing::tileprovider {
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/**
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* Enables a simple way of providing tiles with any type of rendered text.
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* Internally it handles setting up a FBO for rendering the text, and defines a new
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* interface, consisting of only a single method for subclasses to implement:
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* renderText(const FontRenderer&, const TileIndex&) const;
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*/
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class TextTileProvider : public TileProvider {
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public:
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/**
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* Default constructor with default values for texture and font size
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*/
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TextTileProvider(const TileTextureInitData& initData, size_t fontSize = 48);
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virtual ~TextTileProvider() override;
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bool initialize() override;
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bool deinitialize() override;
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// The TileProvider interface below is implemented in this class
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virtual Tile getTile(const TileIndex& tileIndex) override;
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virtual Tile::Status getTileStatus(const TileIndex& index) override;
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virtual TileDepthTransform depthTransform() override;
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virtual void update() override;
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virtual void reset() override;
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virtual int maxLevel() override;
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/**
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* Allow overriding of hash function.
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* Default is <code>TileIndex::hashKey()</code>
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*
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* \param tileIndex tileIndex to hash
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* \returns hashkey used for in LRU cache for this tile
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*/
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virtual TileIndex::TileHashKey toHash(const TileIndex& tileIndex) const;
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/**
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* Uses the fontRenderer to render some text onto the tile texture provided in
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* backgroundTile(const TileIndex& tileIndex).
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*
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* \param fontRenderer used for rendering text onto texture
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* \param tileIndex associated with the tile to be rendered onto
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*/
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virtual void renderText(const ghoul::fontrendering::FontRenderer& fontRenderer,
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const TileIndex& tileIndex) const = 0;
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protected:
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const TileTextureInitData _initData;
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std::shared_ptr<ghoul::fontrendering::Font> _font;
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size_t _fontSize;
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private:
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Tile
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createChunkIndexTile(const TileIndex& tileIndex);
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std::unique_ptr<ghoul::fontrendering::FontRenderer> _fontRenderer;
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GLuint _fbo;
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cache::MemoryAwareTileCache* _tileCache;
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};
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} // namespace openspace::globebrowsing::tileprovider
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#endif // __OPENSPACE_MODULE_GLOBEBROWSING___TEXT_TILE_PROVIDER___H__
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