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widget-factory: Add images that support dnd

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Just use the bottom left notebook for a GtkPicture with custom drag
source and drop target.
This commit is contained in:
Benjamin Otte
2021-07-26 02:35:09 +02:00
parent 4453597946
commit f1b50baba1
2 changed files with 79 additions and 8 deletions
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33
demos/widget-factory/widget-factory.c
View File

@@ -696,6 +696,37 @@ on_range_to_changed (GtkSpinButton *to)
gtk_spin_button_set_value (from, v2);
}
static GdkContentProvider *
on_picture_drag_prepare (GtkDragSource *source,
double x,
double y,
gpointer unused)
{
GtkWidget *picture;
picture = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (source));
return gdk_content_provider_new_typed (GDK_TYPE_TEXTURE, gtk_picture_get_paintable (GTK_PICTURE (picture)));
}
static gboolean
on_picture_drop (GtkDropTarget *dest,
const GValue *value,
double x,
double y,
gpointer unused)
{
GtkWidget *picture;
GdkPaintable *paintable;
picture = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (dest));
paintable = g_value_get_object (value);
gtk_picture_set_paintable (GTK_PICTURE (picture), paintable);
return TRUE;
}
static void
info_bar_response (GtkWidget *infobar, int response_id)
{
@@ -2040,6 +2071,8 @@ activate (GApplication *app)
"on_page_combo_changed", (GCallback)on_page_combo_changed,
"on_range_from_changed", (GCallback)on_range_from_changed,
"on_range_to_changed", (GCallback)on_range_to_changed,
"on_picture_drag_prepare", (GCallback)on_picture_drag_prepare,
"on_picture_drop", (GCallback)on_picture_drop,
"tab_close_cb", (GCallback)tab_close_cb,
"increase_icon_size", (GCallback)increase_icon_size,
"decrease_icon_size", (GCallback)decrease_icon_size,

54
demos/widget-factory/widget-factory.ui
View File

@@ -1251,8 +1251,21 @@ Suspendisse feugiat quam quis dolor accumsan cursus.</property>
<child>
<object class="GtkNotebookPage">
<property name="child">
<object class="GtkBox" id="box6">
<property name="orientation">vertical</property>
<object class="GtkPicture">
<property name="file">resource:///org/gtk/WidgetFactory4/sunset.jpg</property>
<child>
<object class="GtkDragSource">
<property name="actions">copy</property>
<signal name="prepare" handler="on_picture_drag_prepare" swapped="no"/>
</object>
</child>
<child>
<object class="GtkDropTarget">
<property name="actions">copy</property>
<property name="formats">GdkTexture</property>
<signal name="drop" handler="on_picture_drop" swapped="no"/>
</object>
</child>
</object>
</property>
<property name="tab">
@@ -1265,8 +1278,21 @@ Suspendisse feugiat quam quis dolor accumsan cursus.</property>
<child>
<object class="GtkNotebookPage">
<property name="child">
<object class="GtkBox" id="box7">
<property name="orientation">vertical</property>
<object class="GtkPicture">
<property name="file">resource:///org/gtk/WidgetFactory4/nyc.jpg</property>
<child>
<object class="GtkDragSource">
<property name="actions">copy</property>
<signal name="prepare" handler="on_picture_drag_prepare" swapped="no"/>
</object>
</child>
<child>
<object class="GtkDropTarget">
<property name="actions">copy</property>
<property name="formats">GdkTexture</property>
<signal name="drop" handler="on_picture_drop" swapped="no"/>
</object>
</child>
</object>
</property>
<property name="tab">
@@ -1278,10 +1304,22 @@ Suspendisse feugiat quam quis dolor accumsan cursus.</property>
</child>
<child>
<object class="GtkNotebookPage">
<property name="position">2</property>
<property name="child">
<object class="GtkBox" id="box8">
<property name="orientation">vertical</property>
<object class="GtkPicture">
<property name="file">resource:///org/gtk/WidgetFactory4/beach.jpg</property>
<child>
<object class="GtkDragSource">
<property name="actions">copy</property>
<signal name="prepare" handler="on_picture_drag_prepare" swapped="no"/>
</object>
</child>
<child>
<object class="GtkDropTarget">
<property name="actions">copy</property>
<property name="formats">GdkTexture</property>
<signal name="drop" handler="on_picture_drop" swapped="no"/>
</object>
</child>
</object>
</property>
<property name="tab">
@@ -1299,7 +1337,7 @@ Suspendisse feugiat quam quis dolor accumsan cursus.</property>
<child>
<object class="GtkNotebookPage">
<property name="child">
<object class="GtkBox" id="box9">
<object class="GtkBox" id="box8">
<property name="orientation">vertical</property>
</object>
</property>