def accumulate(
console: tcod.console.Console,
viewport: Optional[Tuple[int, int, int, int]] = None,
) -> None:
"""Render a console to SDL's renderer.
`console` is the console to renderer. Background alpha is supported and
well defined. Foregound alpha is also supported, but not as well-defined.
The `default tileset` will be used for graphics.
`viewport` is where to draw the console on the screen. If it is None then
the console will be stretched over the full screen. You can use
`get_viewport` to make a viewport with specific constraints.
You will need to call `present` yourself to show the rendered console, if
the viewport does not cover the full screen then you'll need to call
`clear` beforehand to clear the pixels outside of the viewport.
This function can be called multiple times, but the current implementation
is optimized to handle only one console. Keep this in mind when rendering
multiple different consoles.
This function depends on a provisional function of the libtcod API. You
may want to pin your exact version of python-tcod to prevent a break.
"""
assert tcod.sys_get_renderer() in (
tcod.RENDERER_SDL2,
tcod.RENDERER_OPENGL2,
)
if viewport is None:
viewport = tcod.ffi.NULL
else:
viewport = tcod.ffi.new("struct SDL_Rect*", viewport)
tcod.lib.TCOD_sys_accumulate_console_(console.console_c, viewport)
def test_sys_custom_render(console):
if libtcodpy.sys_get_renderer() != libtcodpy.RENDERER_SDL:
pytest.xfail(reason='Only supports SDL')
escape = []
def sdl_callback(sdl_surface):
escape.append(True)
libtcodpy.console_set_dirty(0, 0, 0, 0)
libtcodpy.sys_register_SDL_renderer(sdl_callback)
libtcodpy.console_flush()
assert escape, 'proof that sdl_callback was called'
def test_sys_custom_render(console):
if libtcodpy.sys_get_renderer() != libtcodpy.RENDERER_SDL:
pytest.xfail(reason='Only supports SDL')
escape = []
def sdl_callback(sdl_surface):
escape.append(True)
libtcodpy.console_set_dirty(0, 0, 0, 0)
libtcodpy.sys_register_SDL_renderer(sdl_callback)
libtcodpy.console_flush()
assert escape, 'proof that sdl_callback was called'
def get_viewport(
console: tcod.console.Console,
correct_aspect: bool = False,
integer_scale: bool = False,
) -> Tuple[int, int, int, int]:
"""Return a viewport which follows the given constants.
`console` is a Console object, it is used as reference for what the correct
aspect should be. The default tileset from `tcod.tileset` is also used as
a reference for the current font size.
If `correct_aspect` is True then the viewport will be letter-boxed to fit
the screen instead of stretched.
If `integer_scale` is True then the viewport to be scaled in integer
proportions, this is ignored when the screen is too small.
"""
assert tcod.sys_get_renderer() == tcod.RENDERER_SDL2
sdl_renderer = tcod.lib.TCOD_sys_get_sdl_renderer()
assert sdl_renderer
tileset = tcod.tileset.get_default()
aspect = (
console.width * tileset.tile_width,
console.height * tileset.tile_height,
)
renderer_size = get_renderer_size()
scale = renderer_size[0] / aspect[0], renderer_size[1] / aspect[1]
if correct_aspect:
scale = min(scale), min(scale)
if integer_scale:
scale = (
int(scale[0]) if scale[0] >= 1 else scale[0],
int(scale[1]) if scale[1] >= 1 else scale[1],
)
view_size = aspect[0] * scale[0], aspect[1] * scale[1]
view_offset = (
(renderer_size[0] - view_size[0]) // 2,
(renderer_size[1] - view_size[1]) // 2,
)
return tuple(int(x) for x in (*view_offset, *view_size)) # type: ignore
