CubicSDR/src/util/GLFont.h

132 lines
3.1 KiB
C++

#pragma once
#include <map>
#include <string>
#include <sstream>
#include <mutex>
#include <atomic>
#include "lodepng.h"
#include "wx/glcanvas.h"
#include "wx/filename.h"
#include "wx/stdpaths.h"
class GLFontStringCache {
public:
GLFontStringCache();
int drawlen;
int vpx, vpy;
int pxHeight;
float msgWidth;
std::atomic_int gc;
std::vector<float> gl_vertices;
std::vector<float> gl_uv;
};
class GLFontChar {
public:
GLFontChar();
~GLFontChar();
void setId(int idval);
// Returns the code point of the 16bit character, supposely Unicode.
int getId();
void setXOffset(int xofs);
int getXOffset();
void setYOffset(int yofs);
int getYOffset();
void setX(int xpos);
int getX();
void setY(int ypos);
int getY();
void setWidth(int w);
int getWidth();
void setHeight(int h);
int getHeight();
void setXAdvance(int xadv);
int getXAdvance();
float getAspect();
void setIndex(unsigned int idx);
int getIndex();
private:
// this is the code point of the 16bit character, supposely Unicode.
int id;
int x, y, width, height;
int xoffset, yoffset;
int xadvance;
float aspect;
int index;
};
class GLFont {
public:
enum Align {
GLFONT_ALIGN_LEFT, GLFONT_ALIGN_RIGHT, GLFONT_ALIGN_CENTER, GLFONT_ALIGN_TOP, GLFONT_ALIGN_BOTTOM
};
enum GLFontSize {
GLFONT_SIZE12, GLFONT_SIZE16, GLFONT_SIZE18, GLFONT_SIZE24, GLFONT_SIZE32, GLFONT_SIZE48, GLFONT_MAX
};
GLFont();
~GLFont();
void loadFont(const std::wstring& fontFile);
static GLFont &getFont(GLFontSize esize);
//Public drawing font, 16 bit char version.
void drawString(const std::wstring& str, float xpos, float ypos, int pxHeight, Align hAlign = GLFONT_ALIGN_LEFT, Align vAlign = GLFONT_ALIGN_TOP, int vpx=0, int vpy=0, bool cacheable = false);
//Public drawing font, 8 bit char version.
void drawString(const std::string& str, float xpos, float ypos, int pxHeight, Align hAlign = GLFONT_ALIGN_LEFT, Align vAlign = GLFONT_ALIGN_TOP, int vpx = 0, int vpy = 0, bool cacheable = false);
private:
std::wstring nextParam(std::wistringstream &str);
std::wstring getParamKey(std::wstring param_str);
std::wstring getParamValue(std::wstring param_str);
static GLFont fonts[GLFONT_MAX];
GLFontStringCache *cacheString(const std::wstring& str, int pxHeight, int vpx, int vpy);
void drawCacheString(GLFontStringCache *fc, float xpos, float ypos, Align hAlign, Align vAlign);
void doCacheGC();
bool isLoaded();
float getStringWidth(const std::wstring& str, float size, float viewAspect);
std::map<std::wstring, GLFontStringCache * > stringCache;
int lineHeight;
int base;
int imageWidth, imageHeight;
bool loaded;
std::map<int, GLFontChar *> characters;
std::vector<float> gl_vertices;
std::vector<float> gl_uv;
std::wstring fontName;
std::wstring imageFile;
std::wstring fontFileSource;
GLuint texId;
int gcCounter;
std::mutex cache_busy;
};