Bogue.DrawSourceLow-level graphics and colors.
This module is internally used for low-level graphics and a thin layer over Tsdl.
The public API is mainly useful for Color management. There are also some helper functions for drawing into an Sdl_area.
Contains the hardware information for drawing (SDL renderer and window).
Manually init the SDL video system, and detect the scaling factor used by Bogue. This is useful only if you don't use Bogue's mainloop (for instance if you manually manage your windows and event loop).
Cleanup and quit SDL.
red, green and blue values are integers in the range 0..255
r,g,b,a
Convert a string of the form "grey" or "#FE01BC" to a rgb code (r,g,b). Color names are taken from here.
Equivalent to Sdl.set_render_draw_color.
These functions can be used to draw onto an Sdl_area.t.
Convert BOGUE logical coordinates into hardware pixel coordinates. This takes into account both the Theme SCALE and the high-dpi scaling of some systems (mac OS retina, iOS).
val line :
?thick:int ->
Tsdl.Sdl.renderer ->
color:color ->
x0:int ->
y0:int ->
x1:int ->
y1:int ->
unitval rectangle :
?thick:int ->
Tsdl.Sdl.renderer ->
color:color ->
w:int ->
h:int ->
x:int ->
y:int ->
unitrectangle renderer ~color ~thick ~w ~h ~x ~y draws a rectangle with given line thickness. The coordinate of the top left corner is (x,y). The size (including the thick line) is (w,h).
val circle :
?thick:int ->
Tsdl.Sdl.renderer ->
color:color ->
radius:int ->
x:int ->
y:int ->
unitcircle renderer ~width ~color ~radius ~x ~y draws a circle with given line thickness, centered at (x,y), with given radius.
Transform a size (W,H) in physical pixels into 'logical' pixels (w,h), which are used for layouts. This is done by dividing by the Theme SCALE variable.
Set the mouse cursor to be the standard system cursor. Internally, this first creates an SDL system cursor (or use a previously created one).