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colorbutton: Port to GtkDropTarget

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This commit is contained in:
Matthias Clasen
2020-01-01 14:40:49 -05:00
parent 8b44fead40
commit f07201cff9
1 changed files with 33 additions and 47 deletions
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80
gtk/gtkcolorbutton.c
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@@ -46,6 +46,7 @@
#include "gtksnapshot.h"
#include "gtkstylecontext.h"
#include "gtkdragsource.h"
#include "gtkdragdest.h"
/**
@@ -122,12 +123,6 @@ static void gtk_color_button_get_property (GObject *object,
static void gtk_color_button_clicked (GtkButton *button,
gpointer user_data);
/* target side drag signals */
static void gtk_color_button_drag_data_received (GtkWidget *widget,
GdkDrop *drop,
GtkSelectionData *selection_data,
GtkColorButton *button);
static guint color_button_signals[LAST_SIGNAL] = { 0 };
@@ -237,44 +232,39 @@ gtk_color_button_class_init (GtkColorButtonClass *klass)
}
static void
gtk_color_button_drag_data_received (GtkWidget *widget,
GdkDrop *drop,
GtkSelectionData *selection_data,
GtkColorButton *button)
got_color (GObject *source,
GAsyncResult *result,
gpointer data)
{
GtkColorButtonPrivate *priv = gtk_color_button_get_instance_private (button);
gint length;
guint16 *dropped;
GdkDrop *drop = GDK_DROP (source);
const GValue *value;
length = gtk_selection_data_get_length (selection_data);
if (length < 0)
return;
/* We accept drops with the wrong format, since the KDE color
* chooser incorrectly drops application/x-color with format 8.
*/
if (length != 8)
value = gdk_drop_read_value_finish (drop, result, NULL);
if (value)
{
g_warning ("%s: Received invalid color data", G_STRFUNC);
return;
GdkRGBA *color = g_value_get_boxed (value);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (data), color);
gdk_drop_finish (drop, GDK_ACTION_COPY);
}
else
gdk_drop_finish (drop, 0);
}
static gboolean
gtk_color_button_drag_drop (GtkDropTarget *dest,
int x,
int y,
GtkColorButton *button)
{
GdkDrop *drop = gtk_drop_target_get_drop (dest);
if (gdk_drop_has_value (drop, GDK_TYPE_RGBA))
{
gdk_drop_read_value_async (drop, GDK_TYPE_RGBA, G_PRIORITY_DEFAULT, NULL, got_color, button);
return TRUE;
}
dropped = (guint16 *) gtk_selection_data_get_data (selection_data);
priv->rgba.red = dropped[0] / 65535.;
priv->rgba.green = dropped[1] / 65535.;
priv->rgba.blue = dropped[2] / 65535.;
priv->rgba.alpha = dropped[3] / 65535.;
gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (priv->swatch), &priv->rgba);
g_signal_emit (button, color_button_signals[COLOR_SET], 0);
g_object_freeze_notify (G_OBJECT (button));
g_object_notify (G_OBJECT (button), "rgba");
g_object_thaw_notify (G_OBJECT (button));
return FALSE;
}
static void
@@ -312,6 +302,7 @@ gtk_color_button_init (GtkColorButton *button)
GdkContentFormats *targets;
GdkContentProvider *content;
GtkDragSource *source;
GtkDropTarget *dest;
priv->button = gtk_button_new ();
g_signal_connect (priv->button, "clicked", G_CALLBACK (gtk_color_button_clicked), button);
@@ -336,14 +327,9 @@ gtk_color_button_init (GtkColorButton *button)
priv->use_alpha = FALSE;
targets = gdk_content_formats_new (drop_types, G_N_ELEMENTS (drop_types));
gtk_drag_dest_set (priv->button,
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_DROP,
targets,
GDK_ACTION_COPY);
g_signal_connect (priv->button, "drag-data-received",
G_CALLBACK (gtk_color_button_drag_data_received), button);
dest = gtk_drop_target_new (GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT, targets, GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_color_button_drag_drop), button);
gtk_drop_target_attach (dest, GTK_WIDGET (button));
gdk_content_formats_unref (targets);
content = gdk_content_provider_new_with_callback (GDK_TYPE_RGBA, get_rgba_value, button);