#include "Renderer.h" #include #include #include "Font.h" namespace Renderer { bool loadedFonts = false; //defined and set in Renderer_init_rpi.cpp extern unsigned int display_width; extern unsigned int display_height; unsigned int getScreenWidth() { return display_width; } unsigned int getScreenHeight() { return display_height; } void setColor4bArray(GLubyte* array, int color) { array[0] = (color & 0x00ff0000) / 0x10000; array[1] = (color & 0x0000ff00) / 0x100; array[2] = (color & 0x000000ff); array[3] = 255; } void buildGLColorArray(GLubyte* ptr, int color, unsigned int vertCount) { for(unsigned int i = 0; i < vertCount; i++) { setColor4bArray(ptr, color); ptr += 4; } } void drawRect(int x, int y, int w, int h, int color) { GLfloat points[12]; points[0] = x; points [1] = y; points[2] = x; points[3] = y + h; points[4] = x + w; points[5] = y; points[6] = x + w; points[7] = y; points[8] = x; points[9] = y + h; points[10] = x + w; points[11] = y + h; GLubyte colors[6*4]; buildGLColorArray(colors, color, 6); glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_COLOR_ARRAY); glVertexPointer(2, GL_FLOAT, 0, points); glColorPointer(4, GL_UNSIGNED_BYTE, 0, colors); glDrawArrays(GL_TRIANGLES, 0, 6); glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_COLOR_ARRAY); } Font* fonts[3] = {NULL, NULL, NULL}; void loadFonts() { std::cout << "loading fonts\n"; unsigned int fontSizes[] = {10, 12, 22}; for(unsigned int i = 0; i < 3; i++) { fonts[i] = new Font("LinLibertine_R.ttf", fontSizes[i]); } loadedFonts = true; } void unloadFonts() { for(unsigned int i = 0; i < 3; i++) { delete fonts[i]; fonts[i] = NULL; } loadedFonts = false; } Font* getFont(FontSize size) { if(!loadedFonts) loadFonts(); return fonts[size]; } int getFontHeight(FontSize size) { if(!loadedFonts) loadFonts(); int h; getFont(size)->sizeText("HEIGHT", NULL, &h); return h; } void drawText(std::string text, int x, int y, int color, FontSize font) { if(!loadedFonts) loadFonts(); getFont(font)->drawText(text, x, y, color); } void drawCenteredText(std::string text, int xOffset, int y, int color, FontSize fontsize) { if(!loadedFonts) loadFonts(); Font* font = getFont(fontsize); int w, h; font->sizeText(text, &w, &h); int x = (int)getScreenWidth() - w; x *= 0.5; x += xOffset * 0.5; drawText(text, x, y, color, fontsize); } //this could probably be optimized //draws text and ensures it's never longer than xLen void drawWrappedText(std::string text, int xStart, int yStart, int xLen, int color, FontSize fontsize) { if(!loadedFonts) loadFonts(); Font* font = getFont(fontsize); int y = yStart; std::string line, word, temp; int w, h; size_t space, newline; while(text.length() > 0 || !line.empty()) //while there's text or we still have text to render { space = text.find(' ', 0); if(space == std::string::npos) space = text.length() - 1; word = text.substr(0, space + 1); //check if the next word contains a newline newline = word.find('\n', 0); if(newline != std::string::npos) { word = word.substr(0, newline); text.erase(0, newline + 1); }else{ text.erase(0, space + 1); } temp = line + word; font->sizeText(temp, &w, &h); //if we're on the last word and it'll fit on the line, just add it to the line if((w <= xLen && text.length() == 0) || newline != std::string::npos) { line = temp; word = ""; } //if the next line will be too long or we're on the last of the text, render it if(w > xLen || text.length() == 0 || newline != std::string::npos) { //render line now if(w > 0) //make sure it's not blank drawText(line, xStart, y, color, fontsize); //increment y by height and some extra padding for the next line y += h + 4; //move the word we skipped to the next line line = word; }else{ //there's still space, continue building the line line = temp; } } } };