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demo: Port the paintable demo to paths

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This commit is contained in:
Benjamin Otte
2024-01-08 07:38:06 +01:00
parent 3f3629154c
commit 63d7b22924
3 changed files with 27 additions and 20 deletions
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39
demos/gtk-demo/paintable.c
View File

@@ -53,7 +53,9 @@ gtk_nuclear_snapshot (GtkSnapshot *snapshot,
double rotation)
{
#define RADIUS 0.3
cairo_t *cr;
GskPathBuilder *builder;
GskPath *path;
GskStroke *stroke;
double size;
gtk_snapshot_append_color (snapshot,
@@ -61,24 +63,29 @@ gtk_nuclear_snapshot (GtkSnapshot *snapshot,
&GRAPHENE_RECT_INIT (0, 0, width, height));
size = MIN (width, height);
cr = gtk_snapshot_append_cairo (snapshot,
&GRAPHENE_RECT_INIT ((width - size) / 2.0,
(height - size) / 2.0,
size, size));
gdk_cairo_set_source_rgba (cr, foreground);
cairo_translate (cr, width / 2.0, height / 2.0);
cairo_scale (cr, size, size);
cairo_rotate (cr, rotation);
cairo_arc (cr, 0, 0, 0.1, - G_PI, G_PI);
cairo_fill (cr);
gtk_snapshot_save (snapshot);
cairo_set_line_width (cr, RADIUS);
cairo_set_dash (cr, (double[1]) { RADIUS * G_PI / 3 }, 1, 0.0);
cairo_arc (cr, 0, 0, RADIUS, - G_PI, G_PI);
cairo_stroke (cr);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (width / 2.0, height / 2.0));
gtk_snapshot_scale (snapshot, size, size);
gtk_snapshot_rotate (snapshot, rotation);
cairo_destroy (cr);
builder = gsk_path_builder_new ();
gsk_path_builder_add_circle (builder, graphene_point_zero (), 0.1);
path = gsk_path_builder_free_to_path (builder);
gtk_snapshot_append_fill (snapshot, path, GSK_FILL_RULE_WINDING, foreground);
gsk_path_unref (path);
stroke = gsk_stroke_new (RADIUS);
gsk_stroke_set_dash (stroke, (float[1]) { RADIUS * G_PI / 3 }, 1);
builder = gsk_path_builder_new ();
gsk_path_builder_add_circle (builder, graphene_point_zero(), RADIUS);
path = gsk_path_builder_free_to_path (builder);
gtk_snapshot_append_stroke (snapshot, path, stroke, foreground);
gsk_path_unref (path);
gsk_stroke_free (stroke);
gtk_snapshot_restore (snapshot);
}
/* Here, we implement the functionality required by the GdkPaintable interface */

4
demos/gtk-demo/paintable_animated.c
View File

@@ -70,7 +70,7 @@ gtk_nuclear_animation_snapshot (GdkPaintable *paintable,
? &(GdkRGBA) { 0.9, 0.75, 0.15, 1.0 } /* yellow */
: &(GdkRGBA) { 0, 0, 0, 0 }, /* transparent */
width, height,
2 * G_PI * nuclear->progress / MAX_PROGRESS);
360 * nuclear->progress / MAX_PROGRESS);
}
static GdkPaintable *
@@ -85,7 +85,7 @@ gtk_nuclear_animation_get_current_image (GdkPaintable *paintable)
* Luckily we added the rotation property to the nuclear icon
* object previously, so we can just return an instance of that one.
*/
return gtk_nuclear_icon_new (2 * G_PI * nuclear->progress / MAX_PROGRESS);
return gtk_nuclear_icon_new (360 * nuclear->progress / MAX_PROGRESS);
}
static GdkPaintableFlags

4
demos/gtk-demo/paintable_mediastream.c
View File

@@ -76,7 +76,7 @@ gtk_nuclear_media_stream_snapshot (GdkPaintable *paintable,
&(GdkRGBA) { 0, 0, 0, 1 }, /* black */
&(GdkRGBA) { 0.9, 0.75, 0.15, 1.0 }, /* yellow */
width, height,
2 * G_PI * nuclear->progress / DURATION);
360 * nuclear->progress / DURATION);
}
static GdkPaintable *
@@ -85,7 +85,7 @@ gtk_nuclear_media_stream_get_current_image (GdkPaintable *paintable)
GtkNuclearMediaStream *nuclear = GTK_NUCLEAR_MEDIA_STREAM (paintable);
/* Same thing as with the animation */
return gtk_nuclear_icon_new (2 * G_PI * nuclear->progress / DURATION);
return gtk_nuclear_icon_new (360 * nuclear->progress / DURATION);
}
static GdkPaintableFlags