71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/*
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* Copyright © 2012-2015 Graham Sellers
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*
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* This code is part of the OpenGL SuperBible, 7th Edition.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __SB7TEXTOVERLAY_H__
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#define __SB7TEXTOVERLAY_H__
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#include <sb7.h>
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namespace sb7
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{
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class text_overlay
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{
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public:
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text_overlay()
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: cursor_x(0),
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cursor_y(0)
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{
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}
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void init(int width, int height, const char* font = nullptr);
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void teardown();
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void draw();
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void drawText(const char* str, int x, int y);
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void print(const char* str);
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void scroll(int lines);
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void moveCursor(int x, int y);
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void clear();
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private:
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GLuint text_buffer;
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GLuint font_texture;
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GLuint vao;
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GLuint text_program;
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char * screen_buffer;
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int buffer_width;
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int buffer_height;
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bool dirty;
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int cursor_x;
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int cursor_y;
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};
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} // namespace sb7
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#endif /* __SB7TEXTOVERLAY_H__ */
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