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xxx path)_fill

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This commit is contained in:
Benjamin Otte
2020-12-11 00:43:55 +01:00
parent 7f046e06bf
commit 855c5031da
1 changed files with 57 additions and 1 deletions
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58
demos/gtk-demo/path_fill.c
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@@ -8,6 +8,7 @@
#include <gtk/gtk.h>
#include "paintable.h"
#include "gsk/gskpathdashprivate.h"
#define GTK_TYPE_PATH_PAINTABLE (gtk_path_paintable_get_type ())
G_DECLARE_FINAL_TYPE (GtkPathPaintable, gtk_path_paintable, GTK, PATH_PAINTABLE, GObject)
@@ -60,7 +61,7 @@ gtk_path_paintable_snapshot (GdkPaintable *paintable,
#if 0
gtk_snapshot_push_fill (snapshot, self->path, GSK_FILL_RULE_WINDING);
#else
GskStroke *stroke = gsk_stroke_new (4.0);
GskStroke *stroke = gsk_stroke_new (2.0);
gtk_snapshot_push_stroke (snapshot, self->path, stroke);
gsk_stroke_free (stroke);
#endif
@@ -215,6 +216,46 @@ create_path_from_text (GtkWidget *widget)
return result;
}
static gboolean
build_path (GskPathOperation op,
const graphene_point_t *pts,
gsize n_pts,
float weight,
gpointer user_data)
{
GskPathBuilder *builder = user_data;
switch (op)
{
case GSK_PATH_MOVE:
gsk_path_builder_move_to (builder, pts[0].x, pts[0].y);
break;
case GSK_PATH_CLOSE:
gsk_path_builder_close (builder);
break;
case GSK_PATH_LINE:
gsk_path_builder_line_to (builder, pts[1].x, pts[1].y);
break;
case GSK_PATH_CURVE:
gsk_path_builder_curve_to (builder, pts[1].x, pts[1].y, pts[2].x, pts[2].y, pts[3].x, pts[3].y);
break;
case GSK_PATH_CONIC:
gsk_path_builder_conic_to (builder, pts[1].x, pts[1].y, pts[2].x, pts[2].y, weight);
break;
default:
g_assert_not_reached ();
break;
}
return TRUE;
}
static gboolean
update_path (GtkWidget *widget,
GdkFrameClock *frame_clock,
@@ -225,12 +266,26 @@ update_path (GtkWidget *widget,
GskPath *path;
graphene_point_t pos;
graphene_vec2_t tangent;
GskStroke *stroke;
builder = gsk_path_builder_new ();
gsk_path_builder_add_segment (builder,
measure,
#if 1
0.0, gsk_path_measure_get_length (measure));
#else
progress > 1 ? (progress - 1) * gsk_path_measure_get_length (measure) : 0.0,
(progress < 1 ? progress : 1.0) * gsk_path_measure_get_length (measure));
#endif
path = gsk_path_builder_free_to_path (builder);
stroke = gsk_stroke_new (1);
gsk_stroke_set_dash (stroke, (float[2]) { 10, 5 }, 2);
gsk_stroke_set_dash_offset (stroke, - (gdk_frame_clock_get_frame_time (frame_clock) % G_USEC_PER_SEC) * 15. / G_USEC_PER_SEC);
builder = gsk_path_builder_new ();
gsk_path_dash (path, stroke, 0.2, build_path, builder);
gsk_path_unref (path);
gsk_path_measure_get_point (measure,
(progress > 1 ? (progress - 1) : progress) * gsk_path_measure_get_length (measure),
@@ -240,6 +295,7 @@ update_path (GtkWidget *widget,
gsk_path_builder_line_to (builder, pos.x + 3 * graphene_vec2_get_y (&tangent), pos.y + 3 * graphene_vec2_get_x (&tangent));
gsk_path_builder_line_to (builder, pos.x - 3 * graphene_vec2_get_y (&tangent), pos.y - 3 * graphene_vec2_get_x (&tangent));
gsk_path_builder_close (builder);
path = gsk_path_builder_free_to_path (builder);
gtk_path_paintable_set_path (GTK_PATH_PAINTABLE (gtk_picture_get_paintable (GTK_PICTURE (widget))),