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5e2e0af8b4
We need to know the target atom value to know when we need to do something with side-effects (since side-effects are expressed via special target values). Previously, the code side-stepped that by looking at the data type (which was rather unique for the one side-effect target that we supported, signalled by the TARGETS target), but for the DELETE target that seems to be no longer an option, hence the new field to carry this information past the convert_selection() routine. This prevents GDK from throwing a warning when trying to convert a DELETE target, which has no format or data objects set. The side-effects for the DELETE target happen earlier, in GTK layer. By the point it gets to change_property(), it's a no-op. https://bugzilla.gnome.org/show_bug.cgi?id=786509
231 lines
8.9 KiB
C
231 lines
8.9 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* gdkselection-win32.h: Private Win32 specific selection object
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*
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* Copyright © 2017 LRN
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library 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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#ifndef __GDK_SELECTION_WIN32_H__
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#define __GDK_SELECTION_WIN32_H__
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G_BEGIN_DECLS
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#define _gdk_win32_selection_get() (_win32_selection)
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#define _gdk_atom_array_index(a, i) (g_array_index (a, GdkAtom, i))
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#define _gdk_win32_selection_atom(i) (_gdk_atom_array_index (_gdk_win32_selection_get ()->known_atoms, i))
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#define _gdk_cf_array_index(a, i) (g_array_index (a, UINT, i))
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#define _gdk_win32_selection_cf(i) (_gdk_cf_array_index (_gdk_win32_selection_get ()->known_clipboard_formats, i))
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/* Maps targets to formats or vice versa, depending on the
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* semantics of the array that holds these.
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* Also remembers whether the data needs to be transmuted.
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*/
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typedef struct {
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gint format;
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GdkAtom target;
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gboolean transmute;
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} GdkSelTargetFormat;
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/* We emulate the GDK_SELECTION window properties of windows (as used
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* in the X11 backend) by using a hash table from window handles to
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* GdkSelProp structs.
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*/
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typedef struct {
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guchar *data;
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gsize length;
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gint bitness;
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GdkAtom target;
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} GdkSelProp;
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/* OLE-based DND state */
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typedef enum {
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GDK_WIN32_DND_NONE,
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GDK_WIN32_DND_PENDING,
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GDK_WIN32_DND_DROPPED,
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GDK_WIN32_DND_FAILED,
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GDK_WIN32_DND_DRAGGING,
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} GdkWin32DndState;
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enum _GdkWin32AtomIndex
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{
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/* GdkAtoms: properties, targets and types */
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GDK_WIN32_ATOM_INDEX_GDK_SELECTION = 0,
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GDK_WIN32_ATOM_INDEX_CLIPBOARD_MANAGER,
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GDK_WIN32_ATOM_INDEX_WM_TRANSIENT_FOR,
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GDK_WIN32_ATOM_INDEX_TARGETS,
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GDK_WIN32_ATOM_INDEX_DELETE,
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GDK_WIN32_ATOM_INDEX_SAVE_TARGETS,
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GDK_WIN32_ATOM_INDEX_UTF8_STRING,
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GDK_WIN32_ATOM_INDEX_TEXT,
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GDK_WIN32_ATOM_INDEX_COMPOUND_TEXT,
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GDK_WIN32_ATOM_INDEX_TEXT_URI_LIST,
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GDK_WIN32_ATOM_INDEX_TEXT_HTML,
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GDK_WIN32_ATOM_INDEX_IMAGE_PNG,
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GDK_WIN32_ATOM_INDEX_IMAGE_JPEG,
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GDK_WIN32_ATOM_INDEX_IMAGE_BMP,
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GDK_WIN32_ATOM_INDEX_IMAGE_GIF,
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/* DND selections */
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GDK_WIN32_ATOM_INDEX_LOCAL_DND_SELECTION,
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GDK_WIN32_ATOM_INDEX_DROPFILES_DND,
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GDK_WIN32_ATOM_INDEX_OLE2_DND,
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/* Clipboard formats */
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GDK_WIN32_ATOM_INDEX_PNG,
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GDK_WIN32_ATOM_INDEX_JFIF,
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GDK_WIN32_ATOM_INDEX_GIF,
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GDK_WIN32_ATOM_INDEX_CF_DIB,
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GDK_WIN32_ATOM_INDEX_CFSTR_SHELLIDLIST,
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GDK_WIN32_ATOM_INDEX_CF_TEXT,
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GDK_WIN32_ATOM_INDEX_CF_UNICODETEXT,
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GDK_WIN32_ATOM_INDEX_LAST
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};
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typedef enum _GdkWin32AtomIndex GdkWin32AtomIndex;
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enum _GdkWin32CFIndex
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{
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GDK_WIN32_CF_INDEX_PNG = 0,
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GDK_WIN32_CF_INDEX_JFIF,
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GDK_WIN32_CF_INDEX_GIF,
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GDK_WIN32_CF_INDEX_UNIFORMRESOURCELOCATORW,
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GDK_WIN32_CF_INDEX_CFSTR_SHELLIDLIST,
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GDK_WIN32_CF_INDEX_HTML_FORMAT,
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GDK_WIN32_CF_INDEX_TEXT_HTML,
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GDK_WIN32_CF_INDEX_IMAGE_PNG,
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GDK_WIN32_CF_INDEX_IMAGE_JPEG,
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GDK_WIN32_CF_INDEX_IMAGE_BMP,
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GDK_WIN32_CF_INDEX_IMAGE_GIF,
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GDK_WIN32_CF_INDEX_TEXT_URI_LIST,
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GDK_WIN32_CF_INDEX_UTF8_STRING,
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GDK_WIN32_CF_INDEX_LAST
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};
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typedef enum _GdkWin32CFIndex GdkWin32CFIndex;
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#define GDK_TYPE_WIN32_SELECTION (gdk_win32_selection_get_type ())
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#define GDK_WIN32_SELECTION(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GDK_TYPE_WIN32_SELECTION, GdkWin32Selection))
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#define GDK_WIN32_SELECTION_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), GDK_TYPE_WIN32_SELECTION, GdkWin32SelectionClass))
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#define GDK_IS_WIN32_SELECTION(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GDK_TYPE_WIN32_SELECTION))
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#define GDK_IS_WIN32_SELECTION_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), GDK_TYPE_WIN32_SELECTION))
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#define GDK_WIN32_SELECTION_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GDK_TYPE_WIN32_SELECTION, GdkWin32SelectionClass))
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typedef struct _GdkWin32Selection GdkWin32Selection;
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typedef struct _GdkWin32SelectionClass GdkWin32SelectionClass;
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/* This object is just a sink to hold all the selection- and dnd-related data
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* that otherwise would be in global variables.
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*/
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struct _GdkWin32Selection
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{
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GObject *parent_instance;
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GHashTable *sel_prop_table;
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GdkSelProp *dropfiles_prop;
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/* We store the owner of each selection in this table. Obviously, this only
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* is valid intra-app, and in fact it is necessary for the intra-app DND to work.
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*/
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GHashTable *sel_owner_table;
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/* GdkAtoms for well-known image formats */
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GdkAtom *known_pixbuf_formats;
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int n_known_pixbuf_formats;
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/* GArray of GdkAtoms for various known Selection and DnD strings.
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* Size is guaranteed to be at least GDK_WIN32_ATOM_INDEX_LAST
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*/
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GArray *known_atoms;
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/* GArray of UINTs for various known clipboard formats.
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* Size is guaranteed to be at least GDK_WIN32_CF_INDEX_LAST.
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*/
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GArray *known_clipboard_formats;
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GdkWin32DndState dnd_target_state;
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GdkWin32DndState dnd_source_state;
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/* Holds a reference to the data object for the target drop site.
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*/
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IDataObject *dnd_data_object_target;
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/* Carries DnD target context from idroptarget_*() to convert_selection() */
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GdkDragContext *target_drag_context;
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/* Carries W32 format ID from idataobject_getdata() to property_change() */
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UINT property_change_format;
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/* Carries the W32-wrapped data between idataobject_getdata() and property_change() */
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LPSTGMEDIUM property_change_data;
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/* Carries the transmute field of the GdkSelTargetFormat from from idataobject_getdata() to property_change() */
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gboolean property_change_transmute;
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/* Carries the target atom from GDK_SELECTION_REQUEST issuer to property_change() */
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GdkAtom property_change_target_atom;
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/* TRUE when we are emptying the clipboard ourselves */
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gboolean ignore_destroy_clipboard;
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/* Array of GdkSelTargetFormats describing the targets supported by the clipboard selection */
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GArray *clipboard_selection_targets;
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/* Same for the DnD selection (applies for both LOCAL and OLE2 DnD) */
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GArray *dnd_selection_targets;
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/* If TRUE, then we queued a GDK_SELECTION_REQUEST with TARGETS
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* target. This field is checked to prevent queueing
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* multiple selection requests.
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*/
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gboolean targets_request_pending;
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/* The handle that was given to OpenClipboard().
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* NULL is a valid handle,
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* INVALID_HANDLE_VALUE means that the clipboard is closed.
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*/
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HWND clipboard_opened_for;
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/* A target-keyed hash table of GArrays of GdkSelTargetFormats describing compatibility formats for a target */
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GHashTable *compatibility_formats;
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/* A format-keyed hash table of GArrays of GdkAtoms describing compatibility targets for a format */
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GHashTable *compatibility_targets;
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/* Last observer owner of the clipboard, as reported by the OS.
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* This is compared to GetClipboardOwner() return value to see
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* whether the owner changed.
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*/
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HWND stored_hwnd_owner;
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};
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struct _GdkWin32SelectionClass
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{
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GObjectClass parent_class;
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};
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GType gdk_win32_selection_get_type (void) G_GNUC_CONST;
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void _gdk_win32_clear_clipboard_queue ();
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gchar * _gdk_win32_get_clipboard_format_name (UINT fmt,
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gboolean *is_predefined);
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void _gdk_win32_add_format_to_targets (UINT format,
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GArray *array,
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GList **list);
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gint _gdk_win32_add_target_to_selformats (GdkAtom target,
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GArray *array);
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void _gdk_win32_selection_property_change (GdkWin32Selection *win32_sel,
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GdkWindow *window,
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GdkAtom property,
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GdkAtom type,
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gint format,
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GdkPropMode mode,
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const guchar *data,
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gint nelements);
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#endif /* __GDK_SELECTION_WIN32_H__ */
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