Context createContextGL(bool antiAlias, bool stencilStrokes) {
int flags = (antiAlias ? NVG_ANTIALIAS : 0) |
(stencilStrokes ? NVG_STENCIL_STROKES : 0);
#if defined(NANOVG_GLES3)
return { nvgCreateGLES3(flags), nvgDeleteGLES3 };
#elif defined(NANOVG_GLES2)
return { nvgCreateGLES2(flags), nvgDeleteGLES2 };
#else
return { nvgCreateGL3(flags), nvgDeleteGL3 };
#endif
}
bool setupGraphics(int _w, int _h) {
w = _w; h = _h;
printGLString("Version", GL_VERSION);
printGLString("Vendor", GL_VENDOR);
printGLString("Renderer", GL_RENDERER);
printGLString("Extensions", GL_EXTENSIONS);
LOGI("setupGraphics(%d, %d)", w, h);
vg = nvgCreateGLES2(NVG_ANTIALIAS | NVG_STENCIL_STROKES | NVG_DEBUG);
glViewport(0, 0, w, h);
checkGlError("glViewport");
glClearColor(r,g,b,a);
checkGlError("glClearColor");
return true;
}
QNanoPainter::QNanoPainter()
: m_nvgContext(nullptr)
, m_textAlign(QNanoPainter::ALIGN_LEFT)
, m_textBaseline(QNanoPainter::BASELINE_ALPHABETIC)
, m_devicePixelRatio(1.0)
, m_fontSet(false)
, m_pixelAlign(QNanoPainter::PIXEL_ALIGN_NONE)
, m_pixelAlignText(QNanoPainter::PIXEL_ALIGN_NONE)
{
// Initialize NanoVG for correct GL version
// TODO: Allow to enable/disable NVG_DEBUG, possibly some own general debug define
#ifdef QT_OPENGL_ES_2
m_nvgContext = nvgCreateGLES2(NVG_ANTIALIAS | NVG_DEBUG);
#else
m_nvgContext = nvgCreateGL2(NVG_ANTIALIAS | NVG_DEBUG);
#endif
Q_ASSERT_X(m_nvgContext, "QNanoPainter::QNanoPainter", "Could not init nanovg!");
}
int
main(int argc, char *argv[])
{
/* Platform */
int width, height;
const char *font_path;
gui_size font_height;
SDL_Window *win;
SDL_GLContext glContext;
NVGcontext *vg = NULL;
unsigned int started;
unsigned int dt;
/* GUI */
struct gui_input in;
struct gui_font font;
struct demo_gui gui;
if (argc < 3) {
fprintf(stdout,"Missing TTF Font file/height argument: nanovg <path> <height>\n");
exit(EXIT_FAILURE);
}
font_path = argv[1];
font_height = (gui_size)MAX(0, atoi(argv[2]));
/* SDL */
SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
win = SDL_CreateWindow("Demo",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN);
glContext = SDL_GL_CreateContext(win);
SDL_GetWindowSize(win, &width, &height);
/* OpenGL */
glewExperimental = 1;
if (glewInit() != GLEW_OK)
die("[GLEW] failed setup\n");
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
/* nanovg */
vg = nvgCreateGLES2(NVG_ANTIALIAS|NVG_DEBUG);
if (!vg) die("[NVG]: failed to init\n");
nvgCreateFont(vg, "fixed", font_path);
nvgFontFace(vg, "fixed");
nvgFontSize(vg, font_height);
nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_MIDDLE);
/* GUI */
memset(&in, 0, sizeof in);
memset(&gui, 0, sizeof gui);
gui.memory = malloc(MAX_MEMORY);
font.userdata.ptr = vg;
nvgTextMetrics(vg, NULL, NULL, &font.height);
font.width = font_get_width;
init_demo(&gui, &font);
while (gui.running) {
/* Input */
SDL_Event evt;
started = SDL_GetTicks();
gui_input_begin(&in);
while (SDL_PollEvent(&evt)) {
if (evt.type == SDL_WINDOWEVENT) resize(&evt);
else if (evt.type == SDL_QUIT) goto cleanup;
else if (evt.type == SDL_KEYUP) key(&in, &evt, gui_false);
else if (evt.type == SDL_KEYDOWN) key(&in, &evt, gui_true);
else if (evt.type == SDL_MOUSEBUTTONDOWN) btn(&in, &evt, gui_true);
else if (evt.type == SDL_MOUSEBUTTONUP) btn(&in, &evt, gui_false);
else if (evt.type == SDL_MOUSEMOTION) motion(&in, &evt);
else if (evt.type == SDL_TEXTINPUT) text(&in, &evt);
else if (evt.type == SDL_MOUSEWHEEL) gui_input_scroll(&in, evt.wheel.y);
}
gui_input_end(&in);
/* GUI */
SDL_GetWindowSize(win, &width, &height);
run_demo(&gui, &in);
/* Draw */
glClearColor(0.4f, 0.4f, 0.4f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
draw(vg, &gui.stack, width, height);
gui.ms = SDL_GetTicks() - started;
SDL_GL_SwapWindow(win);
/* Timing */
dt = SDL_GetTicks() - started;
gui.ms = dt;
if (dt < DTIME)
SDL_Delay(DTIME - dt);
}
cleanup:
/* Cleanup */
free(gui.memory);
nvgDeleteGLES2(vg);
SDL_GL_DeleteContext(glContext);
SDL_DestroyWindow(win);
SDL_Quit();
return 0;
}
int main()
{
GLFWwindow* window;
DemoData data;
NVGcontext* vg = NULL;
PerfGraph fps;
double prevt = 0;
if (!glfwInit()) {
printf("Failed to init GLFW.");
return -1;
}
initGraph(&fps, GRAPH_RENDER_FPS, "Frame Time");
glfwSetErrorCallback(errorcb);
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
window = glfwCreateWindow(1000, 600, "NanoVG", NULL, NULL);
// window = glfwCreateWindow(1000, 600, "NanoVG", glfwGetPrimaryMonitor(), NULL);
if (!window) {
glfwTerminate();
return -1;
}
glfwSetKeyCallback(window, key);
glfwMakeContextCurrent(window);
vg = nvgCreateGLES2(NVG_ANTIALIAS | NVG_STENCIL_STROKES | NVG_DEBUG);
if (vg == NULL) {
printf("Could not init nanovg.\n");
return -1;
}
if (loadDemoData(vg, &data) == -1)
return -1;
glfwSwapInterval(0);
glfwSetTime(0);
prevt = glfwGetTime();
while (!glfwWindowShouldClose(window))
{
double mx, my, t, dt;
int winWidth, winHeight;
int fbWidth, fbHeight;
float pxRatio;
t = glfwGetTime();
dt = t - prevt;
prevt = t;
updateGraph(&fps, dt);
glfwGetCursorPos(window, &mx, &my);
glfwGetWindowSize(window, &winWidth, &winHeight);
glfwGetFramebufferSize(window, &fbWidth, &fbHeight);
// Calculate pixel ration for hi-dpi devices.
pxRatio = (float)fbWidth / (float)winWidth;
// Update and render
glViewport(0, 0, fbWidth, fbHeight);
if (premult)
glClearColor(0,0,0,0);
else
glClearColor(0.3f, 0.3f, 0.32f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT|GL_STENCIL_BUFFER_BIT);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
nvgBeginFrame(vg, winWidth, winHeight, pxRatio);
renderDemo(vg, mx,my, winWidth,winHeight, t, blowup, &data);
renderGraph(vg, 5,5, &fps);
nvgEndFrame(vg);
if (screenshot) {
screenshot = 0;
saveScreenShot(fbWidth, fbHeight, premult, "dump.png");
}
glEnable(GL_DEPTH_TEST);
glfwSwapBuffers(window);
glfwPollEvents();
}
freeDemoData(vg, &data);
nvgDeleteGLES2(vg);
glfwTerminate();
return 0;
}
int
main(int argc, char *argv[])
{
/* Platform */
int width, height;
const char *font_path;
zr_size font_height;
SDL_Window *win;
SDL_GLContext glContext;
NVGcontext *vg = NULL;
/* GUI */
struct demo_gui gui;
if (argc < 2) {
fprintf(stdout,"Missing TTF Font file argument: gui <path>\n");
exit(EXIT_FAILURE);
}
font_path = argv[1];
font_height = 10;
/* SDL */
SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
win = SDL_CreateWindow("Demo",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN);
glContext = SDL_GL_CreateContext(win);
SDL_GetWindowSize(win, &width, &height);
/* OpenGL */
glewExperimental = 1;
if (glewInit() != GLEW_OK)
die("[GLEW] failed setup\n");
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
/* nanovg */
vg = nvgCreateGLES2(NVG_ANTIALIAS|NVG_DEBUG);
if (!vg) die("[NVG]: failed to init\n");
nvgCreateFont(vg, "fixed", font_path);
nvgFontFace(vg, "fixed");
nvgFontSize(vg, font_height);
nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_MIDDLE);
/* GUI */
memset(&gui, 0, sizeof gui);
zr_command_queue_init_fixed(&gui.queue, calloc(MAX_MEMORY, 1), MAX_MEMORY);
gui.font.userdata = zr_handle_ptr(vg);
gui.font.width = font_get_width;
nvgTextMetrics(vg, NULL, NULL, &gui.font.height);
init_demo(&gui);
while (gui.running) {
/* Input */
SDL_Event evt;
zr_input_begin(&gui.input);
while (SDL_PollEvent(&evt)) {
if (evt.type == SDL_WINDOWEVENT) resize(&evt);
else if (evt.type == SDL_QUIT) goto cleanup;
else if (evt.type == SDL_KEYUP) key(&gui.input, &evt, zr_false);
else if (evt.type == SDL_KEYDOWN) key(&gui.input, &evt, zr_true);
else if (evt.type == SDL_MOUSEBUTTONDOWN) btn(&gui.input, &evt, zr_true);
else if (evt.type == SDL_MOUSEBUTTONUP) btn(&gui.input, &evt, zr_false);
else if (evt.type == SDL_MOUSEMOTION) motion(&gui.input, &evt);
else if (evt.type == SDL_TEXTINPUT) text(&gui.input, &evt);
else if (evt.type == SDL_MOUSEWHEEL)
zr_input_scroll(&gui.input,(float)evt.wheel.y);
}
zr_input_end(&gui.input);
/* GUI */
SDL_GetWindowSize(win, &width, &height);
run_demo(&gui);
/* Draw */
glClearColor(0.4f, 0.4f, 0.4f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
draw(vg, &gui.queue, width, height);
SDL_GL_SwapWindow(win);
}
cleanup:
/* Cleanup */
free(zr_buffer_memory(&gui.queue.buffer));
nvgDeleteGLES2(vg);
SDL_GL_DeleteContext(glContext);
SDL_DestroyWindow(win);
SDL_Quit();
return 0;
}
int
main(int argc, char *argv[])
{
int x,y,width, height;
SDL_Window *win;
SDL_GLContext glContext;
NVGcontext *vg = NULL;
int running = 1;
unsigned int started;
unsigned int dt;
struct zr_user_font font;
struct file_browser browser;
const char *font_path;
int icon_sheet;
font_path = argv[1];
if (argc < 2)
die("missing argument!: <font> <icons>");
/* SDL */
SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
win = SDL_CreateWindow("File Explorer",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN);
glContext = SDL_GL_CreateContext(win);
SDL_GetWindowSize(win, &width, &height);
SDL_GetWindowPosition(win, &x, &y);
/* OpenGL */
glewExperimental = 1;
if (glewInit() != GLEW_OK)
die("[GLEW] failed setup\n");
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
/* nanovg */
vg = nvgCreateGLES2(NVG_ANTIALIAS|NVG_DEBUG);
if (!vg) die("[NVG]: failed to init\n");
nvgCreateFont(vg, "fixed", font_path);
nvgFontFace(vg, "fixed");
nvgFontSize(vg, 14);
nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_MIDDLE);
/* GUI */
memset(&browser, 0, sizeof browser);
font.userdata.ptr = vg;
nvgTextMetrics(vg, NULL, NULL, &font.height);
font.width = font_get_width;
file_browser_init(&browser, vg, &font, width, height);
while (running) {
/* Input */
SDL_Event evt;
started = SDL_GetTicks();
zr_input_begin(&browser.input);
while (SDL_PollEvent(&evt)) {
if (evt.type == SDL_WINDOWEVENT) resize(&evt);
else if (evt.type == SDL_QUIT) goto cleanup;
else if (evt.type == SDL_KEYUP) key(&browser.input, &evt, zr_false);
else if (evt.type == SDL_KEYDOWN) key(&browser.input, &evt, zr_true);
else if (evt.type == SDL_MOUSEBUTTONDOWN) btn(&browser.input, &evt, zr_true);
else if (evt.type == SDL_MOUSEBUTTONUP) btn(&browser.input, &evt, zr_false);
else if (evt.type == SDL_MOUSEMOTION) motion(&browser.input, &evt);
else if (evt.type == SDL_TEXTINPUT) text(&browser.input, &evt);
else if (evt.type == SDL_MOUSEWHEEL) zr_input_scroll(&browser.input, evt.wheel.y);
}
zr_input_end(&browser.input);
SDL_GetWindowSize(win, &width, &height);
running = file_browser_run(&browser, width, height);
/* Draw */
glClearColor(0.4f, 0.4f, 0.4f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
draw(vg, &browser.queue, width, height);
SDL_GL_SwapWindow(win);
}
cleanup:
/* Cleanup */
free(browser.memory);
nvgDeleteGLES2(vg);
SDL_GL_DeleteContext(glContext);
SDL_DestroyWindow(win);
SDL_Quit();
return 0;
}