def main():
window, gl_context = impl_pysdl2_init()
impl = SDL2Impl(window)
opened = True
running = True
event = SDL_Event()
while running:
while SDL_PollEvent(ctypes.byref(event)) != 0:
if event.type == SDL_QUIT:
running = False
break
impl.process_event(event)
impl.process_inputs()
imgui.new_frame()
if imgui.begin_main_menu_bar():
if imgui.begin_menu("File", True):
clicked_quit, selected_quit = imgui.menu_item(
"Quit", 'Cmd+Q', False, True)
if clicked_quit:
exit(1)
imgui.end_menu()
imgui.end_main_menu_bar()
imgui.show_user_guide()
imgui.show_test_window()
if opened:
expanded, opened = imgui.begin("fooo", True)
imgui.text("Bar")
imgui.text_colored("Eggs", 0.2, 1., 0.)
imgui.end()
with imgui.styled(imgui.STYLE_ALPHA, 1):
imgui.show_metrics_window()
gl.glClearColor(114 / 255., 144 / 255., 154 / 255., 1)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
imgui.render()
SDL_GL_SwapWindow(window)
impl.shutdown()
SDL_GL_DeleteContext(gl_context)
SDL_DestroyWindow(window)
SDL_Quit()
def main():
window = impl_glfw_init()
impl = GlfwImpl(window)
opened = True
while not glfw.window_should_close(window):
glfw.poll_events()
impl.process_inputs()
imgui.new_frame()
if imgui.begin_main_menu_bar():
if imgui.begin_menu("File", True):
clicked_quit, selected_quit = imgui.menu_item("Quit", 'Cmd+Q', False, True)
if clicked_quit:
exit(1)
imgui.end_menu()
imgui.end_main_menu_bar()
imgui.show_user_guide()
imgui.show_test_window()
if opened:
expanded, opened = imgui.begin("fooo", True)
imgui.text("Bar")
imgui.text_colored("Eggs", 0.2, 1., 0.)
imgui.end()
with imgui.styled(imgui.STYLE_ALPHA, 1):
imgui.show_metrics_window()
gl.glClearColor(114 / 255., 144 / 255., 154 / 255., 1)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
imgui.render()
glfw.swap_buffers(window)
impl.shutdown()
imgui.shutdown()
glfw.terminate()
def render_snippet(
source,
file_path,
title="",
width=200,
height=200,
auto_layout=False,
output_dir='.',
click=None,
):
_patch_imgui()
# Little shim that filters out the new_frame and render commands
# so we can use them in code examples. It's simply a hoax.
lines = [
line if all([
"imgui.new_frame()" not in line, "imgui.render()" not in line,
"imgui.end_frame()" not in line
]) else "" for line in source.split('\n')
]
source = "\n".join(lines)
code = compile(source, '<str>', 'exec')
window_name = "minimal ImGui/GLFW3 example"
if not glfw.init():
print("Could not initialize OpenGL context")
exit(1)
# OS X supports only forward-compatible core profiles from 3.2
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, gl.GL_TRUE)
# note: creating context without window is tricky so made window invisible
glfw.window_hint(glfw.VISIBLE, False)
window = glfw.create_window(int(width), int(height), window_name, None,
None)
glfw.make_context_current(window)
if not window:
glfw.terminate()
print("Could not initialize Window")
exit(1)
impl = GlfwRenderer(window)
glfw.poll_events()
# render target for framebuffer
texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA, width, height, 0,
gl.GL_RGB, gl.GL_UNSIGNED_BYTE, None)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER,
gl.GL_NEAREST)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_NEAREST)
# create new framebuffer
offscreen_fb = gl.glGenFramebuffers(1)
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, offscreen_fb)
# attach texture to framebuffer
gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, gl.GL_COLOR_ATTACHMENT0,
gl.GL_TEXTURE_2D, texture, 0)
# note: Clicking simulation is hacky as f**k and it
# requires at least three frames to be rendered:
# * 1st with mouse in position but without button pressed.
# * 2nd in roughly same posiotion of mouse to turn on hover
# mouse button starts to press but still does not trigger click.
# * 3rd in the same position with button pressed still to finally
# trigger the "clicked" state.
# note: If clicking simulation is not required we draw only one frame.
for m_state in ([None] if not click else [False, True, True]):
# note: Mouse click MUST be simulated before new_frame call!
if click:
impl.io.mouse_draw_cursor = True
simulate_click(click[0], click[1], m_state)
else:
# just make sure mouse state is clear
_clear_mouse()
impl.process_inputs()
imgui.new_frame()
with imgui.styled(imgui.STYLE_ALPHA, 1):
imgui.core.set_next_window_size(0, 0)
if auto_layout:
imgui.set_next_window_size(width - 10, height - 10)
imgui.set_next_window_position(impl.io.DisplaySize.x * 0.5,
implio.DisplaySize.y * 0.5,
1,
pivot_x=0.5,
pivot_y=0.5)
exec(code, locals(), globals())
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, offscreen_fb)
gl.glClearColor(1, 1, 1, 0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
imgui.render()
# retrieve pixels from framebuffer and write to file
pixels = gl.glReadPixels(0, 0, width, height, gl.GL_RGBA,
gl.GL_UNSIGNED_BYTE)
image = Image.frombytes('RGBA', (width, height), pixels)
# note: glReadPixels returns lines "bottom to top" but PIL reads bytes
# top to bottom
image = image.transpose(Image.FLIP_TOP_BOTTOM)
image.save(os.path.join(output_dir, file_path))
glfw.terminate()
def render_snippet(
source,
file_path,
title="",
width=200,
height=200,
auto_window=False,
auto_layout=False,
output_dir='.',
):
code = compile(source, '<str>', 'exec')
window_name = "minimal ImGui/GLFW3 example"
if not glfw.init():
print("Could not initialize OpenGL context")
exit(1)
# OS X supports only forward-compatible core profiles from 3.2
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, gl.GL_TRUE)
# note: creating context without window is tricky so made window invisible
glfw.window_hint(glfw.VISIBLE, False)
window = glfw.create_window(int(width), int(height), window_name, None,
None)
glfw.make_context_current(window)
if not window:
glfw.terminate()
print("Could not initialize Window")
exit(1)
imgui_ctx = GlfwImpl(window)
imgui_ctx.enable()
glfw.poll_events()
# render target for framebuffer
texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, texture)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA, width, height, 0,
gl.GL_RGB, gl.GL_UNSIGNED_BYTE, None)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER,
gl.GL_NEAREST)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_NEAREST)
# create new framebuffer
offscreen_fb = gl.glGenFramebuffers(1)
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, offscreen_fb)
# attach texture to framebuffer
gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, gl.GL_COLOR_ATTACHMENT0,
gl.GL_TEXTURE_2D, texture, 0)
imgui_ctx.new_frame()
with imgui.styled(imgui.STYLE_ALPHA, 1):
imgui.core.set_next_window_size(0, 0)
if auto_layout:
imgui.set_next_window_size(width - 10, height - 10)
imgui.set_next_window_centered()
if auto_window:
imgui.set_next_window_size(width - 10, height - 10)
imgui.set_next_window_centered()
imgui.begin("Example: %s" % title)
exec(code, locals(), globals())
if auto_window:
imgui.end()
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, offscreen_fb)
gl.glClearColor(1, 1, 1, 0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
imgui.render()
# retrieve pixels from framebuffer and write to file
pixels = gl.glReadPixels(0, 0, width, height, gl.GL_RGBA,
gl.GL_UNSIGNED_BYTE)
image = Image.frombytes('RGBA', (width, height), pixels)
# note: glReadPixels returns lines "bottom to top" but PIL reads bytes
# top to bottom
image = image.transpose(Image.FLIP_TOP_BOTTOM)
image.save(os.path.join(output_dir, file_path))
glfw.terminate()
def main():
width, height = 1280, 720
window_name = "minimal ImGui/GLFW3 example"
if not glfw.init():
print("Could not initialize OpenGL context")
exit(1)
# OS X supports only forward-compatible core profiles from 3.2
glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, gl.GL_TRUE)
# Create a windowed mode window and its OpenGL context
window = glfw.create_window(int(width), int(height), window_name, None,
None)
glfw.make_context_current(window)
if not window:
glfw.terminate()
print("Could not initialize Window")
exit(1)
imgui_ctx = GlfwImpl(window)
imgui_ctx.enable()
opened = True
style = imgui.GuiStyle()
while not glfw.window_should_close(window):
glfw.poll_events()
imgui_ctx.new_frame()
imgui.show_user_guide()
imgui.show_test_window()
if opened:
expanded, opened = imgui.begin("fooo", True)
imgui.text("Bar")
imgui.text_colored("Eggs", 0.2, 1., 0.)
imgui.end()
with imgui.styled(imgui.STYLE_ALPHA, 1):
imgui.show_metrics_window()
imgui.show_style_editor(style)
# note: this is redundant
width, height = glfw.get_framebuffer_size(window)
gl.glViewport(0, 0, int(width / 2), int(height))
gl.glClearColor(114 / 255., 144 / 255., 154 / 255., 1)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
imgui.render()
glfw.swap_buffers(window)
glfw.terminate()
