forked from AuroraMiddleware/gtk
220 lines
6.0 KiB
Plaintext
220 lines
6.0 KiB
Plaintext
Dir structure for ports
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=======================
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The directory structure here is:
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gdk/
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gdk/x11
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gdk/win32
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...
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The gdk/ directory directly contains all public
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header files (that are not specific to one
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windowing system).
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There, in general should be no system dependency
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For each set of functionality, there are the following
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files:
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gdkwindow.h: public header file
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gdkwindow.c: common implementation
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x11/gdkwindow.i: functionality specific to X11
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win32/gdkwindow.i: functionality specific to win32
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The gdkwindow.c file looks like:
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====
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#include "gdkwindow.h"
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#ifdef GDK_WINDOWING_X11
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#include "x11/gdkwindow.i"
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#elif defined(GDK_WINDOW_WIN32)
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#include "win32/gdkwindow.i"
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fo#endif
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[ generic implementation bits ]
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====
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x11/gdkwindow.i should only assume that gdkwindow.h has been
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included and included all other dependencies explicitely.
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The x11/ directory will contain:
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.i files
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.c files specific to X
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.h files specific to X
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And a Makefile.am that takes care of distributing the
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files in the directory, and also for building any
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X-specific utilities. (Such as the gxid daemon).
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Virtualization
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==============
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The concept of virtualization is that calls to draw
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on a drawable are dispatched through a function table.
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This potentially allows for:
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Postscript drawables
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metafiles
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It also provides a nice clean framework for multi-windowing
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support - instead of reimplementing a whole bunch of function
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calls, one provides an implementaiton for the vtables.
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X works in this way internally - per-screen functions are
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virtualized inside a screen structure, and drawing functions
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are virtualized inside the GC structure.
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For the virtualization of drawing, clearly GdkDrawable needs
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to be virtualized. Beyond that, one has to decide on
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a case-by-case basis whether a particular structure is
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drawing-mode independent (like GdkRectangle) or not.
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The most important GDK structures that are involved drawing are:
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GdkColor
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GdkGC
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GdkFont
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GdkRegion
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The whole font aspect of Gdk is going to get heavily
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reworked with the introduction of "Pango".
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GdkRegion almost certainly needs to be virtualized,
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if you, way, want to do postscript drawables.
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While doing so, the API of GdkRegion should be
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changed so that the region operations take 3 parameters
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instead of returning a newly created region.
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Drawable operations:
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destroy
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create_gc
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get_values
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set_values
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set_dashes
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copy
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GC Operations:
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draw_point
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draw_line
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draw_rectangle
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draw_arc
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draw_polygon
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draw_string
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draw_text
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draw_text_wc
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draw_pixmap
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draw_bitmap
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draw_image
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draw_points
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draw_segments
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draw_lines
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Adding multi-screen, display support.
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=====================================
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The following functions need to have per-display variants:
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void gdk_pointer_ungrab (guint32 time);
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void gdk_keyboard_ungrab (guint32 time);
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gint gdk_pointer_is_grabbed (void);
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gint gdk_screen_width (void);
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gint gdk_screen_height (void);
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gint gdk_screen_width_mm (void);
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gint gdk_screen_height_mm (void);
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void gdk_beep (void);
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void gdk_key_repeat_disable (void);
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void gdk_key_repeat_restore (void);
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gint gdk_visual_get_best_depth (void);
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GdkVisualType gdk_visual_get_best_type (void);
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GdkVisual* gdk_visual_get_system (void);
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GdkVisual* gdk_visual_get_best (void);
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GdkVisual* gdk_visual_get_best_with_depth (gint depth);
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GdkVisual* gdk_visual_get_best_with_type (GdkVisualType visual_type);
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GdkVisual* gdk_visual_get_best_with_both (gint depth,
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GdkVisualType visual_type);
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void gdk_query_depths (gint **depths,
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gint *count);
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void gdk_query_visual_types (GdkVisualType **visual_types,
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gint *count);
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GList* gdk_list_visuals (void);
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void gdk_add_client_message_filter (GdkAtom message_type,
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GdkFilterFunc func,
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gpointer data);
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guint32 gdk_drag_get_protocol (guint32 xid,
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GdkDragProtocol *protocol);
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GdkCursor* gdk_cursor_new (GdkCursorType cursor_type);
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GdkCursor* gdk_cursor_new_from_pixmap (GdkPixmap *source,
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GdkPixmap *mask,
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GdkColor *fg,
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GdkColor *bg,
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gint x,
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gint y);
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GdkColormap* gdk_colormap_get_system (void);
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gint gdk_colormap_get_system_size (void);
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GdkFont* gdk_font_load (const gchar *font_name);
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GdkFont* gdk_fontset_load (gchar *fontset_name);
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gint gdk_selection_owner_set (GdkWindow *owner,
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GdkAtom selection,
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guint32 time,
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gint send_event);
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GdkWindow* gdk_selection_owner_get (GdkAtom selection);
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void gdk_selection_send_notify (guint32 requestor,
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GdkAtom selection,
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GdkAtom target,
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GdkAtom property,
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guint32 time);
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gint gdk_text_property_to_text_list (GdkAtom encoding, gint format,
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guchar *text, gint length,
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gchar ***list);
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void gdk_free_text_list (gchar **list);
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gint gdk_string_to_compound_text (gchar *str,
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GdkAtom *encoding, gint *format,
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guchar **ctext, gint *length);
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void gdk_free_compound_text (guchar *ctext);
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GdkAtom gdk_atom_intern (const gchar *atom_name,
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gint only_if_exists);
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gchar* gdk_atom_name (GdkAtom atom);
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GList *gdk_input_list_devices (void);
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void gdk_input_set_source (guint32 deviceid,
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GdkInputSource source);
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gint gdk_input_set_mode (guint32 deviceid,
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GdkInputMode mode);
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void gdk_input_set_axes (guint32 deviceid,
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GdkAxisUse *axes);
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void gdk_input_set_key (guint32 deviceid,
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guint index,
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guint keyval,
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GdkModifierType modifiers);
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gint gdk_im_ready (void);
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void gdk_im_end (void);
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GdkIC* gdk_ic_new (GdkICAttr *attr,
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GdkICAttributesType mask);
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GdkRegion* gdk_region_new (void);
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void gdk_event_send_clientmessage_toall (GdkEvent *event);
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gboolean gdk_event_send_client_message (GdkEvent *event,
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guint32 xid);
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And maybe:
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void gdk_error_trap_push (void);
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gint gdk_error_trap_pop (void);
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