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Thirdparty/Pangolin/include/pangolin/gl/gltext.h

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+/* This file is part of the Pangolin Project.
+ * http://github.com/stevenlovegrove/Pangolin
+ *
+ * Copyright (c) 2013 Steven Lovegrove
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <pangolin/gl/gl.h>
+#include <pangolin/gl/glchar.h>
+
+#include <vector>
+#include <string>
+
+namespace pangolin {
+
+class PANGOLIN_EXPORT GlText
+{
+public:
+    GlText();
+
+    GlText(const GlText& txt);
+
+    GlText(const GlTexture& font_tex);
+    
+    void AddSpace(GLfloat s);
+
+    // Add specified charector to this string.
+    void Add(unsigned char c, const GlChar& glc);
+
+    // Clear text
+    void Clear();
+
+    // Render without transform in text-centric pixel coordinates
+    void Draw() const;
+    void DrawGlSl() const;
+
+#ifdef BUILD_PANGOLIN_GUI
+    // Render at (x,y,z)' in object coordinates,
+    // keeping text size and orientation constant
+    void Draw(GLfloat x, GLfloat y, GLfloat z = 0.0f) const;
+
+    // Render at (x,y,z)' in window coordinates.
+    void DrawWindow(GLfloat x, GLfloat y, GLfloat z = 0.0f) const;
+#endif // BUILD_PANGOLIN_GUI
+    
+    // Return text that this object signifies.
+    const std::string& Text() const {
+        return str;
+    }
+    
+    // Return width in pixels of this text.
+    GLfloat Width() const {
+        return width;
+    }
+
+    // Return height in pixels of this text.
+    GLfloat Height() const {
+        return ymax;
+    }
+    
+    // Return height in pixels of this text, including under baseline
+    GLfloat FullHeight() const {
+        return ymax - ymin;
+    }
+
+//protected:
+    const GlTexture* tex;
+    std::string str;
+    GLfloat width;
+    GLfloat ymin;
+    GLfloat ymax;
+    
+    std::vector<XYUV> vs;
+};
+
+}