forked from AuroraMiddleware/gtk
Add GtkDragIcon
This is a GtkRoot implemntation for drag icons, using the surface provided by GdkDrag. This lets us avoid GTK_WINDOW_POPUP and gtk_window_set_hardcoded_surface.
This commit is contained in:
Matthias Clasen
parent
133b6f2f23
commit
a6244a95be
398
gtk/gtkdragicon.c
Normal file
398
gtk/gtkdragicon.c
Normal file
@ -0,0 +1,398 @@
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/* GTK - The GIMP Toolkit
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* Copyright 2019 Matthias Clasen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkdragiconprivate.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "gtkwidgetprivate.h"
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#include "gtkcssnodeprivate.h"
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struct _GtkDragIcon
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{
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GtkWidget parent_instance;
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GdkSurface *surface;
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GskRenderer *renderer;
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GtkWidget *widget;
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};
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struct _GtkDragIconClass
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{
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GtkWidgetClass parent_class;
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};
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enum {
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LAST_ARG = 1
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};
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static void gtk_drag_icon_root_init (GtkRootInterface *iface);
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static void gtk_drag_icon_native_init (GtkNativeInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkDragIcon, gtk_drag_icon, GTK_TYPE_CONTAINER,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_NATIVE,
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gtk_drag_icon_native_init)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_ROOT,
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gtk_drag_icon_root_init))
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static GdkDisplay *
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gtk_drag_icon_root_get_display (GtkRoot *self)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (self);
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if (icon->surface)
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return gdk_surface_get_display (icon->surface);
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return gdk_display_get_default ();
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}
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static void
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gtk_drag_icon_root_init (GtkRootInterface *iface)
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{
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iface->get_display = gtk_drag_icon_root_get_display;
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}
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static GdkSurface *
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gtk_drag_icon_native_get_surface (GtkNative *native)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (native);
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return icon->surface;
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}
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static GskRenderer *
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gtk_drag_icon_native_get_renderer (GtkNative *native)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (native);
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return icon->renderer;
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}
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static void
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gtk_drag_icon_native_get_surface_transform (GtkNative *native,
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int *x,
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int *y)
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{
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GtkStyleContext *context;
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GtkBorder margin, border, padding;
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context = gtk_widget_get_style_context (GTK_WIDGET (native));
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gtk_style_context_get_margin (context, &margin);
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gtk_style_context_get_border (context, &border);
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gtk_style_context_get_padding (context, &padding);
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*x = margin.left + border.left + padding.left;
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*y = margin.top + border.top + padding.top;
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}
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static void
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gtk_drag_icon_move_resize (GtkDragIcon *icon)
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{
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GtkRequisition req;
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if (icon->surface)
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{
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gtk_widget_get_preferred_size (GTK_WIDGET (icon), NULL, &req);
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gdk_surface_resize (icon->surface, req.width, req.height);
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}
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}
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static void
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gtk_drag_icon_native_check_resize (GtkNative *native)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (native);
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GtkWidget *widget = GTK_WIDGET (native);
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if (!_gtk_widget_get_alloc_needed (widget))
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gtk_widget_ensure_allocate (widget);
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else if (gtk_widget_get_visible (widget))
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{
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gtk_drag_icon_move_resize (icon);
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if (icon->surface)
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gtk_widget_allocate (widget,
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gdk_surface_get_width (icon->surface),
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gdk_surface_get_height (icon->surface),
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-1, NULL);
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}
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}
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static void
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gtk_drag_icon_native_init (GtkNativeInterface *iface)
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{
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iface->get_surface = gtk_drag_icon_native_get_surface;
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iface->get_renderer = gtk_drag_icon_native_get_renderer;
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iface->get_surface_transform = gtk_drag_icon_native_get_surface_transform;
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iface->check_resize = gtk_drag_icon_native_check_resize;
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}
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static gboolean
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surface_render (GdkSurface *surface,
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cairo_region_t *region,
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GtkWidget *widget)
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{
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gtk_widget_render (widget, surface, region);
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return TRUE;
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}
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static void
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gtk_drag_icon_realize (GtkWidget *widget)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (widget);
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g_warn_if_fail (icon->surface != NULL);
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gdk_surface_set_widget (icon->surface, widget);
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g_signal_connect (icon->surface, "render", G_CALLBACK (surface_render), widget);
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GTK_WIDGET_CLASS (gtk_drag_icon_parent_class)->realize (widget);
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icon->renderer = gsk_renderer_new_for_surface (icon->surface);
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}
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static void
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gtk_drag_icon_unrealize (GtkWidget *widget)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (widget);
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GTK_WIDGET_CLASS (gtk_drag_icon_parent_class)->unrealize (widget);
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gsk_renderer_unrealize (icon->renderer);
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g_clear_object (&icon->renderer);
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if (icon->surface)
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{
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g_signal_handlers_disconnect_by_func (icon->surface, surface_render, widget);
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gdk_surface_set_widget (icon->surface, NULL);
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}
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}
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static void
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gtk_drag_icon_map (GtkWidget *widget)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (widget);
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gdk_surface_show (icon->surface);
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GTK_WIDGET_CLASS (gtk_drag_icon_parent_class)->map (widget);
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if (icon->widget && gtk_widget_get_visible (icon->widget))
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gtk_widget_map (icon->widget);
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}
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static void
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gtk_drag_icon_unmap (GtkWidget *widget)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (widget);
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g_warn_if_fail (icon->surface != NULL);
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GTK_WIDGET_CLASS (gtk_drag_icon_parent_class)->unmap (widget);
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if (icon->surface)
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gdk_surface_hide (icon->surface);
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if (icon->widget)
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gtk_widget_unmap (icon->widget);
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}
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static void
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gtk_drag_icon_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (widget);
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if (icon->widget)
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gtk_widget_measure (icon->widget,
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orientation, for_size,
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minimum, natural,
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minimum_baseline, natural_baseline);
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}
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static void
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gtk_drag_icon_size_allocate (GtkWidget *widget,
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int width,
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int height,
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int baseline)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (widget);
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gtk_drag_icon_move_resize (icon);
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if (icon->widget)
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gtk_widget_allocate (icon->widget, width, height, baseline, NULL);
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}
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static void
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gtk_drag_icon_show (GtkWidget *widget)
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{
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_gtk_widget_set_visible_flag (widget, TRUE);
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gtk_css_node_validate (gtk_widget_get_css_node (widget));
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gtk_widget_realize (widget);
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gtk_drag_icon_native_check_resize (GTK_NATIVE (widget));
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gtk_widget_map (widget);
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}
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static void
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gtk_drag_icon_hide (GtkWidget *widget)
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{
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_gtk_widget_set_visible_flag (widget, FALSE);
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gtk_widget_unmap (widget);
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}
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static void
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gtk_drag_icon_dispose (GObject *object)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (object);
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g_clear_pointer (&icon->widget, gtk_widget_unparent);
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G_OBJECT_CLASS (gtk_drag_icon_parent_class)->dispose (object);
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g_clear_object (&icon->surface);
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}
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static void
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gtk_drag_icon_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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switch (prop_id)
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{
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case LAST_ARG + GTK_ROOT_PROP_FOCUS_WIDGET:
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g_value_set_object (value, NULL);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_drag_icon_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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switch (prop_id)
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{
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case LAST_ARG + GTK_ROOT_PROP_FOCUS_WIDGET:
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// do nothing
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_drag_icon_add (GtkContainer *self,
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GtkWidget *widget)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (self);
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if (icon->widget)
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{
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g_warning ("GtkDragIcon already has a child");
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return;
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}
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gtk_widget_set_parent (widget, GTK_WIDGET (icon));
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icon->widget = widget;
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}
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static void
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gtk_drag_icon_remove (GtkContainer *self,
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GtkWidget *widget)
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{
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GtkDragIcon *icon = GTK_DRAG_ICON (self);
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if (icon->widget == widget)
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{
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gtk_widget_unparent (widget);
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icon->widget = NULL;
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}
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}
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static void
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gtk_drag_icon_class_init (GtkDragIconClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
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object_class->dispose = gtk_drag_icon_dispose;
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object_class->get_property = gtk_drag_icon_get_property;
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object_class->set_property = gtk_drag_icon_set_property;
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widget_class->realize = gtk_drag_icon_realize;
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widget_class->unrealize = gtk_drag_icon_unrealize;
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widget_class->map = gtk_drag_icon_map;
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widget_class->unmap = gtk_drag_icon_unmap;
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widget_class->measure = gtk_drag_icon_measure;
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widget_class->size_allocate = gtk_drag_icon_size_allocate;
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widget_class->show = gtk_drag_icon_show;
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widget_class->hide = gtk_drag_icon_hide;
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container_class->add = gtk_drag_icon_add;
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container_class->remove = gtk_drag_icon_remove;
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gtk_root_install_properties (object_class, LAST_ARG);
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gtk_widget_class_set_css_name (widget_class, "dnd");
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}
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static void
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gtk_drag_icon_init (GtkDragIcon *self)
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{
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}
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GtkWidget *
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gtk_drag_icon_new (void)
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{
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return g_object_new (GTK_TYPE_DRAG_ICON, NULL);
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}
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void
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gtk_drag_icon_set_surface (GtkDragIcon *icon,
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GdkSurface *surface)
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{
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g_set_object (&icon->surface, surface);
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}
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void
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gtk_drag_icon_set_widget (GtkDragIcon *icon,
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GtkWidget *widget)
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{
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if (icon->widget == widget)
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return;
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if (icon->widget)
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gtk_widget_unparent (icon->widget);
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icon->widget = widget;
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if (icon->widget)
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gtk_widget_set_parent (icon->widget, GTK_WIDGET (icon));
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}
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46
gtk/gtkdragiconprivate.h
Normal file
46
gtk/gtkdragiconprivate.h
Normal file
@ -0,0 +1,46 @@
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/* GTK - The GIMP Toolkit
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* Copyright 2019 Matthias Clasen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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* Lesser General Public License for more details.
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||||
*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __GTK_DRAG_ICON_PRIVATE_H__
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#define __GTK_DRAG_ICON_PRIVATE_H__
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#include <gio/gio.h>
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#include <gtk/gtk.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_DRAG_ICON (gtk_drag_icon_get_type ())
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G_DECLARE_FINAL_TYPE (GtkDragIcon, gtk_drag_icon, GTK, DRAG_ICON, GtkContainer)
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GtkWidget * gtk_drag_icon_new (void);
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void gtk_drag_icon_set_surface (GtkDragIcon *icon,
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GdkSurface *surface);
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void gtk_drag_icon_set_widget (GtkDragIcon *icon,
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GtkWidget *widget);
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G_END_DECLS
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#endif /* __GTK_DRAG_ICON_PRIVATE_H__ */
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@ -103,6 +103,7 @@ gtk_private_sources = files([
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'gtkcssvalue.c',
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'gtkcsswidgetnode.c',
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'gtkcustomlayout.c',
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'gtkdragicon.c',
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'gtkfilechooserembed.c',
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'gtkfilechooserentry.c',
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'gtkfilechoosererrorstack.c',
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