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gtk-demo: Don't use GtkColorSwatch

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Making our own is 80 lines of code, so just do it.
This commit is contained in:
Matthias Clasen 2020-07-17 20:44:06 -04:00
parent f2924988db
commit 0e476c1f28
1 changed files with 78 additions and 12 deletions
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90
demos/gtk-demo/dnd.c
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@ -597,6 +597,83 @@ css_button_new (const char *class)
return button;
}
typedef struct
{
GtkWidget parent_instance;
GdkRGBA color;
} ColorSwatch;
typedef struct
{
GtkWidgetClass parent_class;
} ColorSwatchClass;
G_DEFINE_TYPE (ColorSwatch, color_swatch, GTK_TYPE_WIDGET)
static GdkContentProvider *
color_swatch_drag_prepare (GtkDragSource *source,
double x,
double y,
ColorSwatch *swatch)
{
return gdk_content_provider_new_typed (GDK_TYPE_RGBA, &swatch->color);
}
static void
color_swatch_init (ColorSwatch *swatch)
{
GtkDragSource *source = gtk_drag_source_new ();
g_signal_connect (source, "prepare", G_CALLBACK (color_swatch_drag_prepare), swatch);
gtk_widget_add_controller (GTK_WIDGET (swatch), GTK_EVENT_CONTROLLER (source));
}
static void
color_swatch_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
ColorSwatch *swatch = (ColorSwatch *)widget;
float w = gtk_widget_get_width (widget);
float h = gtk_widget_get_height (widget);
gtk_snapshot_append_color (snapshot, &swatch->color,
&GRAPHENE_RECT_INIT(0, 0, w, h));
}
void
color_swatch_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum_size,
int *natural_size,
int *minimum_baseline,
int *natural_baseline)
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
*minimum_size = *natural_size = 48;
else
*minimum_size = *natural_size = 32;
}
static void
color_swatch_class_init (ColorSwatchClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
widget_class->snapshot = color_swatch_snapshot;
widget_class->measure = color_swatch_measure;
gtk_widget_class_set_css_name (widget_class, "colorswatch");
}
static GtkWidget *
color_swatch_new (const char *color)
{
ColorSwatch *swatch = g_object_new (color_swatch_get_type (), NULL);
gdk_rgba_parse (&swatch->color, color);
return GTK_WIDGET (swatch);
}
static GtkWidget *window = NULL;
GtkWidget *
@ -670,18 +747,7 @@ do_dnd (GtkWidget *do_widget)
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), box3);
for (i = 0; colors[i]; i++)
{
GdkRGBA rgba;
GtkWidget *swatch;
gdk_rgba_parse (&rgba, colors[i]);
swatch = g_object_new (g_type_from_name ("GtkColorSwatch"),
"rgba", &rgba,
"selectable", FALSE,
NULL);
gtk_box_append (GTK_BOX (box3), swatch);
}
gtk_box_append (GTK_BOX (box3), color_swatch_new (colors[i]));
gtk_box_append (GTK_BOX (box3), css_button_new ("rainbow1"));
gtk_box_append (GTK_BOX (box3), css_button_new ("rainbow2"));