Window.Draw is not the right name for a method that does more than
just drawing. Rename to Update instead, and rename the DrawEvent
accordingly for symmetry.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Instead of querying the backing store scale for every pointer event,
use the scale from the last window draw. It might not make any visible
difference because we redraw on scale changes, but it is more correct.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
When moving a window to another monitor, update is called when the
opengl backing store updates its internal size.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Compute and keep constant the pixel density, to avoid window content
changes when moving to another monitor with a different density.
Use backing store scale, not content scale for input events.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The CVDisplayLink used for synchronizing rendering to the display
refresh rate runs on a separate thread from the main thread.
View callbacks must therefore be serialized. Implement that by
introducing a singleton goroutine that owns the view map and runs
incoming commands.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Replace the StageDead stage with DestroyEvent dedicated to ending
the event loop and, for premature window closes, the error.
Drop the error return from NewWindow; any errors in window creation
will appear as an immediate DestroyEvent with its Err field set.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Replace CreateWindow with NewWindow that immediately creates a Window
ready to use.
Drop the Windows channel of windows created by the system. For iOS
and Android where the system creates the windows, let them rendezvous
with the window created in the first NewWindow call.
Android is further changed so that destroying and re-creating the
Java Activity simply reconnects with the original Window.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
To keep the interface slim, remove the helper methods and shorten
the essential method, Pixels, to Px.
Add and use unexported Config implementation in the app package.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
We are going to encourage a model where pointers to a central
(program global) Configs are passed to widgets at setup time, and
not pass Configs at every frame.
That way, the global Gonfig can change, but the pointers won't need
updating.
This change only switches the Draw event's Config pointer to a value
to avoid tempting programs to use the event Config instead of
updating their own central Configs.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The os and gl packages were separate in the past, which required
uintptr for cross-package CFTypeRefs. That's no longer needed.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
I found a convincing use case: stopping asynchronous activities
while paused. A follow up change will rename the stages and add
an example.
This reverts commit f9840b0963.
I'm not convinced the API is right. For exmaple, an event that
notifies a program when to save its state is both smaller and
might be sufficient.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
It turns out we already support multiple windows on Android: when
the activity is recreated.
This reverts commit f21b5eb1df.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Gio doesn't support multiple windows anyway, so get rid of the
app.Windows channel and use NewWindow call for the mobile platforms
as well.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Elias Naur