void FontContext::initFontContext(int _atlasSize) { m_atlas = std::unique_ptr<Texture>(new Texture(_atlasSize, _atlasSize)); FONSparams params; params.width = _atlasSize; params.height = _atlasSize; params.flags = (unsigned char)FONS_ZERO_TOPLEFT; params.renderCreate = renderCreate; params.renderResize = nullptr; params.renderUpdate = renderUpdate; params.renderDraw = nullptr; params.renderDelete = nullptr; params.pushQuad = pushQuad; params.userPtr = (void*) this; m_fsContext = fonsCreateInternal(¶ms); fonsSetErrorCallback(m_fsContext, &fontstashError, (void*) this); }
int main() { int fontNormal = FONS_INVALID; int fontItalic = FONS_INVALID; int fontBold = FONS_INVALID; int fontJapanese = FONS_INVALID; GLFWwindow* window; const GLFWvidmode* mode; if (!glfwInit()) return -1; mode = glfwGetVideoMode(glfwGetPrimaryMonitor()); window = glfwCreateWindow(mode->width - 40, mode->height - 80, "Font Stash", NULL, NULL); if (!window) { glfwTerminate(); return -1; } glfwSetKeyCallback(window, key); glfwMakeContextCurrent(window); fs = glfonsCreate(256, 256, FONS_ZERO_TOPLEFT); if (fs == NULL) { printf("Could not create stash.\n"); return -1; } fonsSetErrorCallback(fs, stashError, fs); fontNormal = fonsAddFont(fs, "sans", "../example/DroidSerif-Regular.ttf"); if (fontNormal == FONS_INVALID) { printf("Could not add font normal.\n"); return -1; } fontItalic = fonsAddFont(fs, "sans-italic", "../example/DroidSerif-Italic.ttf"); if (fontItalic == FONS_INVALID) { printf("Could not add font italic.\n"); return -1; } fontBold = fonsAddFont(fs, "sans-bold", "../example/DroidSerif-Bold.ttf"); if (fontBold == FONS_INVALID) { printf("Could not add font bold.\n"); return -1; } fontJapanese = fonsAddFont(fs, "sans-jp", "../example/DroidSansJapanese.ttf"); if (fontJapanese == FONS_INVALID) { printf("Could not add font japanese.\n"); return -1; } while (!glfwWindowShouldClose(window)) { float sx, sy, dx, dy, lh = 0; int width, height; int atlasw, atlash; unsigned int white,black,brown,blue; char msg[64]; glfwGetFramebufferSize(window, &width, &height); // Update and render glViewport(0, 0, width, height); glClearColor(0.3f, 0.3f, 0.32f, 1.0f); glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glDisable(GL_TEXTURE_2D); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(0,width,height,0,-1,1); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glDisable(GL_DEPTH_TEST); glColor4ub(255,255,255,255); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA); glEnable(GL_CULL_FACE); white = glfonsRGBA(255,255,255,255); brown = glfonsRGBA(192,128,0,128); blue = glfonsRGBA(0,192,255,255); black = glfonsRGBA(0,0,0,255); sx = 50; sy = 50; dx = sx; dy = sy; dash(dx,dy); fonsClearState(fs); fonsSetSize(fs, size); fonsSetFont(fs, fontNormal); fonsVertMetrics(fs, NULL, NULL, &lh); dx = sx; dy += lh; dash(dx,dy); fonsSetSize(fs, size); fonsSetFont(fs, fontNormal); fonsSetColor(fs, white); dx = fonsDrawText(fs, dx,dy,"The quick ",NULL); fonsSetSize(fs, size/2); fonsSetFont(fs, fontItalic); fonsSetColor(fs, brown); dx = fonsDrawText(fs, dx,dy,"brown ",NULL); fonsSetSize(fs, size/3); fonsSetFont(fs, fontNormal); fonsSetColor(fs, white); dx = fonsDrawText(fs, dx,dy,"fox ",NULL); fonsSetSize(fs, 14); fonsSetFont(fs, fontNormal); fonsSetColor(fs, white); fonsDrawText(fs, 20, height-20,"Press UP / DOWN keys to change font size and to trigger atlas full callback, R to reset atlas, E to expand atlas.",NULL); fonsGetAtlasSize(fs, &atlasw, &atlash); snprintf(msg, sizeof(msg), "Atlas: %d × %d", atlasw, atlash); fonsDrawText(fs, 20, height-50, msg, NULL); fonsDrawDebug(fs, width - atlasw - 20, 20.0); glEnable(GL_DEPTH_TEST); glfwSwapBuffers(window); glfwPollEvents(); } glfonsDelete(fs); glfwTerminate(); return 0; }