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colorswatch: Convert to GtkDragSource

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This commit is contained in:
Matthias Clasen 2019-12-31 11:58:27 -05:00
parent 8e3db48482
commit 5d49b11ffd
1 changed files with 24 additions and 47 deletions
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71
gtk/gtkcolorswatch.c
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@ -40,6 +40,7 @@
#include "gtkwidgetprivate.h"
#include "gtkeventcontrollerkey.h"
#include "gtknative.h"
#include "gtkdragsource.h"
#include "a11y/gtkcolorswatchaccessibleprivate.h"
@ -113,56 +114,23 @@ swatch_snapshot (GtkWidget *widget,
gtk_widget_snapshot_child (widget, priv->overlay_widget, snapshot);
}
static void
drag_set_color_icon (GdkDrag *drag,
const GdkRGBA *color)
gtk_color_swatch_drag_begin (GtkDragSource *source,
GtkColorSwatch *swatch)
{
GtkColorSwatchPrivate *priv = gtk_color_swatch_get_instance_private (swatch);
GtkSnapshot *snapshot;
GdkPaintable *paintable;
snapshot = gtk_snapshot_new ();
gtk_snapshot_append_color (snapshot,
color,
&GRAPHENE_RECT_INIT(0, 0, 48, 32));
gtk_snapshot_append_color (snapshot, &priv->color, &GRAPHENE_RECT_INIT(0, 0, 48, 32));
paintable = gtk_snapshot_free_to_paintable (snapshot, NULL);
gtk_drag_set_icon_paintable (drag, paintable, 4, 4);
gtk_drag_source_set_icon (source, paintable, 0, 0);
g_object_unref (paintable);
}
static void
swatch_drag_begin (GtkWidget *widget,
GdkDrag *drag)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
GdkRGBA color;
gtk_color_swatch_get_rgba (swatch, &color);
drag_set_color_icon (drag, &color);
}
static void
swatch_drag_data_get (GtkWidget *widget,
GdkDrag *drag,
GtkSelectionData *selection_data)
{
GtkColorSwatch *swatch = GTK_COLOR_SWATCH (widget);
guint16 vals[4];
GdkRGBA color;
gtk_color_swatch_get_rgba (swatch, &color);
vals[0] = color.red * 0xffff;
vals[1] = color.green * 0xffff;
vals[2] = color.blue * 0xffff;
vals[3] = color.alpha * 0xffff;
gtk_selection_data_set (selection_data,
g_intern_static_string ("application/x-color"),
16, (guchar *)vals, 8);
}
static void
swatch_drag_data_received (GtkWidget *widget,
GdkDrop *drop,
@ -523,8 +491,6 @@ gtk_color_swatch_class_init (GtkColorSwatchClass *class)
widget_class->measure = gtk_color_swatch_measure;
widget_class->snapshot = swatch_snapshot;
widget_class->drag_begin = swatch_drag_begin;
widget_class->drag_data_get = swatch_drag_data_get;
widget_class->drag_data_received = swatch_drag_data_received;
widget_class->popup_menu = swatch_popup_menu;
widget_class->size_allocate = swatch_size_allocate;
@ -600,6 +566,14 @@ static const char *dnd_targets[] = {
"application/x-color"
};
static void
get_rgba_value (GValue *value,
gpointer data)
{
GtkColorSwatchPrivate *priv = gtk_color_swatch_get_instance_private (GTK_COLOR_SWATCH (data));
g_value_set_boxed (value, &priv->color);
}
void
gtk_color_swatch_set_rgba (GtkColorSwatch *swatch,
const GdkRGBA *color)
@ -611,12 +585,15 @@ gtk_color_swatch_set_rgba (GtkColorSwatch *swatch,
if (!priv->has_color)
{
GdkContentFormats *targets = gdk_content_formats_new (dnd_targets, G_N_ELEMENTS (dnd_targets));
gtk_drag_source_set (GTK_WIDGET (swatch),
GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
targets,
GDK_ACTION_COPY | GDK_ACTION_MOVE);
gdk_content_formats_unref (targets);
GdkContentProvider *content;
GtkDragSource *source;
content = gdk_content_provider_new_with_callback (GDK_TYPE_RGBA, get_rgba_value, swatch);
source = gtk_drag_source_new (content, GDK_ACTION_COPY);
g_object_unref (content);
g_signal_connect (source, "drag-begin", G_CALLBACK (gtk_color_swatch_drag_begin), swatch);
gtk_drag_source_attach (source, GTK_WIDGET (swatch), GDK_BUTTON1_MASK | GDK_BUTTON3_MASK);
}
priv->has_color = TRUE;