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glyphpaintable: Implement GtkSymbolicPaintable

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This commit is contained in:
Matthias Clasen
2023-01-22 13:16:03 -05:00
parent 3ec1ca13e0
commit a84616167b
1 changed files with 41 additions and 7 deletions
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44
demos/gtk-demo/glyphpaintable.c
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@@ -36,10 +36,12 @@ enum {
static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
static void
glyph_paintable_snapshot (GdkPaintable *paintable,
glyph_paintable_snapshot_symbolic (GtkSymbolicPaintable *paintable,
GdkSnapshot *snapshot,
double width,
double height)
double height,
const GdkRGBA *colors,
gsize n_colors)
{
GlyphPaintable *self = GLYPH_PAINTABLE (paintable);
cairo_t *cr;
@@ -51,6 +53,7 @@ glyph_paintable_snapshot (GdkPaintable *paintable,
cairo_glyph_t glyph;
hb_glyph_extents_t extents;
double draw_scale;
GdkRGBA foreground;
if (self->face == NULL)
return;
@@ -81,13 +84,26 @@ glyph_paintable_snapshot (GdkPaintable *paintable,
unsigned int r, g, b, a;
if (sscanf (entries[i], "%2x%2x%2x%2x", &r, &g, &b, &a) == 4)
cairo_font_options_set_custom_palette_color (font_options, i, r / 255., g / 255., b / 255. , a / 255.);
cairo_font_options_set_custom_palette_color (font_options, i,
r / 255., g / 255., b / 255. , a / 255.);
}
g_strfreev (entries);
}
for (int i = 0; i +1 < MIN (4, n_colors); i++)
cairo_font_options_set_custom_palette_color (font_options, i,
colors[i + 1].red,
colors[i + 1].green,
colors[i + 1].blue,
colors[i + 1].alpha);
#endif
if (n_colors > 0)
foreground = colors[0];
else
foreground = self->color;
scaled_font = cairo_scaled_font_create (cairo_face, &font_matrix, &ctm, font_options);
cr = gtk_snapshot_append_cairo (GTK_SNAPSHOT (snapshot),
@@ -102,7 +118,7 @@ glyph_paintable_snapshot (GdkPaintable *paintable,
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_paint (cr);
gdk_cairo_set_source_rgba (cr, &self->color);
gdk_cairo_set_source_rgba (cr, &foreground);
glyph.index = self->glyph;
glyph.x = - extents.x_bearing / (1 << self->subpixel_bits);
@@ -117,6 +133,16 @@ glyph_paintable_snapshot (GdkPaintable *paintable,
cairo_destroy (cr);
}
static void
glyph_paintable_snapshot (GdkPaintable *paintable,
GdkSnapshot *snapshot,
double width,
double height)
{
glyph_paintable_snapshot_symbolic (GTK_SYMBOLIC_PAINTABLE (paintable),
snapshot, width, height, NULL, 0);
}
static int
glyph_paintable_get_intrinsic_width (GdkPaintable *paintable)
{
@@ -155,9 +181,17 @@ glyph_paintable_init_interface (GdkPaintableInterface *iface)
iface->get_intrinsic_height = glyph_paintable_get_intrinsic_height;
}
static void
glyph_symbolic_paintable_init_interface (GtkSymbolicPaintableInterface *iface)
{
iface->snapshot_symbolic = glyph_paintable_snapshot_symbolic;
}
G_DEFINE_TYPE_WITH_CODE (GlyphPaintable, glyph_paintable, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
glyph_paintable_init_interface))
glyph_paintable_init_interface)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SYMBOLIC_PAINTABLE,
glyph_symbolic_paintable_init_interface))
static void
glyph_paintable_init (GlyphPaintable *self)