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;
}
