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55 lines
1.6 KiB
55 lines
1.6 KiB
4 months ago
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/*
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* Copyright (c) Hisilicon Technologies Co., Ltd. 2019-2020. All rights reserved.
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* Description: Draw text
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* Author:
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* Create: 2019-08-23
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*/
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#ifndef OSD_TEXT_H
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#define OSD_TEXT_H
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#include <memory>
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#include "FontAtlas.h"
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#include "FontStyleAtlas.h"
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#include "Common.h"
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#include "ShaderProgram.h"
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namespace dolgles {
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constexpr EGL_U32 FONT_STANDARD_WIDTH = 30;
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constexpr EGL_U32 FONT_STANDARD_HEIGHT = FONTSIZE_STANDARD + 10;
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class OSDText {
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public:
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OSDText();
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~OSDText();
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EGL_S32 Init();
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EGL_S32 DrawText(const FrameBuffObject &fbo, const GLTextInfo &textInfo, GLfloat x, GLfloat y);
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EGL_S32 GetTextSize(const GLTextInfo &textInfo, EGL_U32 &width, EGL_U32 &height) const;
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EGL_S32 LoadFont(const std::string &fontLibPath, EGL_U32 fontSize);
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private:
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bool IsDrawStandardFont(const GLTextInfo &textInfo) const;
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void GLDrawText(const std::u16string &text, EGL_U32 textLen, GLfloat x, GLfloat y);
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void RenderText(const std::u16string &text, EGL_U32 textLen, GLfloat x, GLfloat y);
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EGL_S32 GetFontTex(const FrameBuffObject &fbo, const GLTextInfo &textInfo);
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bool FindCharFromMap(EGL_CHAR16 ch) const;
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std::unique_ptr<FontAtlas> fontAtlas = nullptr;
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std::unique_ptr<FontStyleAtlas> fontStyleAtlas = nullptr;
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std::unique_ptr<ShaderProgram> shaderProgram = nullptr;
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GLuint program;
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GLuint vbo;
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GLuint fontTex;
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GLuint texWidth;
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GLuint texHeight;
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GLint uniformTex;
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GLint attribCoord;
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GLint uniformColor;
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GLfloat scaleX;
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GLfloat scaleY;
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std::map<unsigned long, GlyphInfo> glyphsMap;
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};
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}; // namespace dolgles
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#endif // end OSD_TEXT_H
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