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jscene: add autopaint option

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This handles JSCENE_PAINT events in the usual manner. This requires that
no painting other than the scene is desired, which is generally the
case.
This commit is contained in:
Lephenixnoir 2024-09-04 08:52:37 +02:00
parent 7587dfa17c
commit 7f2131d6a0
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GPG key ID: 1BBA026E13FC0495
2 changed files with 24 additions and 0 deletions
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13
include/justui/jscene.h
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@ -35,6 +35,8 @@ typedef struct {
bool mainmenu; bool mainmenu;
/* Whether jscene_run() powers off */ /* Whether jscene_run() powers off */
bool poweroff; bool poweroff;
/* Whether jscene_run() will autopaint */
bool autopaint;
} jscene; } jscene;
@ -118,6 +120,17 @@ void jscene_set_mainmenu(jscene *scene, bool mainmenu);
will probably want to save important data before leaving anyway. */ will probably want to save important data before leaving anyway. */
void jscene_set_poweroff(jscene *scene, bool poweroff); void jscene_set_poweroff(jscene *scene, bool poweroff);
/* jscene_set_autopaint(): Set whether jscene_run() handles its own painting
This will automatically handle JSCENE_PAINT events by drawing the scene
widget and updating the screen. You should use this only if the scene is the
only thing to draw; don't overdraw after this. If you have things to draw
not handled by jscene, handle JSCENE_PAINT yourself.
When enabling autopaint, you should also set a background color for the
scene, otherwise frames will draw transparently on top of each other. */
void jscene_set_autopaint(jscene *scene, bool autopaint);
/* jscene_run(): Run a scene's main loop /* jscene_run(): Run a scene's main loop
This function implements a main control loop that sleeps when there is This function implements a main control loop that sleeps when there is

11
src/jscene.c
View file

@ -55,6 +55,7 @@ jscene *jscene_create(int x, int y, int w, int h, void *parent)
s->lost_events = 0; s->lost_events = 0;
s->mainmenu = true; s->mainmenu = true;
s->poweroff = true; s->poweroff = true;
s->autopaint = false;
/* Prepare first layout/paint operation */ /* Prepare first layout/paint operation */
s->widget.dirty = 1; s->widget.dirty = 1;
@ -214,6 +215,11 @@ void jscene_set_poweroff(jscene *scene, bool poweroff)
scene->poweroff = poweroff; scene->poweroff = poweroff;
} }
void jscene_set_autopaint(jscene *scene, bool autopaint)
{
scene->autopaint = autopaint;
}
jevent jscene_run(jscene *s) jevent jscene_run(jscene *s)
{ {
keydev_t *d = keydev_std(); keydev_t *d = keydev_std();
@ -229,6 +235,11 @@ jevent jscene_run(jscene *s)
/* Queued GUI events */ /* Queued GUI events */
e = jscene_read_event(s); e = jscene_read_event(s);
if(e.type == JSCENE_PAINT && s->autopaint) {
jscene_render(s);
dupdate();
continue;
}
if(e.type != JSCENE_NONE && !jscene_process_event(s, e)) break; if(e.type != JSCENE_NONE && !jscene_process_event(s, e)) break;
/* Queued keyboard events */ /* Queued keyboard events */