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e9b6bfcc01
Mon Nov 8 14:47:04 1999 Owen Taylor <otaylor@redhat.com>
Move all X specific code into the x11/ directory.
Aside from shuffling things around, did the following:
* gdk/gdkprivate.h gdk/gdk.h gdk/x11/gdkmain-x11.h: Add
gdk_arg_context_* - a simple argument parsing system
in the style of popt.
* gdk/gdkdrawable.[ch] gdk/gdkprivate.h gdk/gdkwindow.[ch]
gdk/x11/gdkprivate-x11.h:
Remove X specific stuff from GdkDrawable and GdkWindowPrivate -
add ->klass and ->klass_data fields. The klass_data
field points to an auxilliary structure that is
windowing system dependent.
* gdk/gdkfont.c: Make most of the measurement functions
simply wrappers around gdk_text_extents().
* gdk/gdkfont.c gdk/gdkprivate.h gdk/x11/gdkfont-x11.c: Add a
_gdk_font_strlen() function that hides the weird
behavior in gtk+-1.[02] where a string is interpreted
differently for 8-bit and 16-bit fonts.
* gdk/gdkevents.c: Add a new function gdk_event_button_generate()
to store common code for synthesizing double/triple
press events.
* gdk/gdkgc.[ch]: Virtualize in the same way as gdkdrawable.h.
Make all the function that modify an existing GC
simply wrappers around gdk_gc_set_values().
* gdk/gdkcc.[ch]: Moved into x11/ directory in preparation
for throwing out later.
* gdk/gdkfont.c gdk/gdkimage.c gdk/gdkcolor.c: Change GdkFontPrivate,
GdkImagePrivate and GdkColormapPrivate to have a
windowing system dependent part (GdkFontPrivateX etc.)
that "derives" from the system-independent part.
* configure.in gdk/x11/Makefile.in gdk/x11/gdkinput*.c:
Got rid of the included-source-files for XInput in
favor of automake conditionals. (Which didn't exist
when XInput support was originally added.)
* gdk/gdkrgb.c: Remove the visual id from the debugging
statements since that is X11 specific; print out
type/depth info instead.
343 lines
9.3 KiB
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343 lines
9.3 KiB
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General
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=======
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- gdk_pointer_grab() and gdk_keyboard_grab() are logically member
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functions of GdkWindow.
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X specific Functions that need to be moved out of the common header files
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=========================================================================
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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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Port Status for Files
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=====================
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gdk
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Much of the contents have been moved to x11/gtkmain.c.
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I've added a little argument-parsing abstraction.
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(Currently called gdk_arg_context_*) that allows
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arguments from multiple places to be combined - that
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probably needs to be either fixed up and moved into
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GLib or replaced with some existing solution like
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popt.
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gdkcc
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This will be removed for GTK+-1.4. Right now, it has been moved
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completely into the x11/ directory to avoid having to port it.
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gdkcolor
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There are a few common utility functions, and the rest
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is in the port-specific files.
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gdkcursor
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No shared code - completely port-specific.
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gdkdnd
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No shared code - completely arch-specific. It's possible that some
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common code for handling GdkDragContext could exist, but the
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GdkDragContextPrivate will be different on each port.
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gdkdrawable
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Pretty much done. GdkDrawable is completely virtualized.
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gdkevents
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There are a few common utility functions, and the rest
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is in the port-specific files.
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gdkfont
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Pretty much done for now - gdkfont.c contains a number of functions
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reimplemented as utility functions, and the rest is
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ports-specific. It will be obsoleted by pango before 1.4.
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gdkgc
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GdkGC is virtualized to go along with GdkDrawable. There are
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a couple of functions I punted on for now and moved into the
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port-specific files - the clipmask functions (because gdkregion
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is not finalized) and also gdk_gc_copy, which I'm not sure
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I like enough to put into the vtable.
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gdkim
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All in the port-specific directories. The abstraction here probably
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will be changed at some point to something more convenient and
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more Unicode-based.
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gdkimage
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GdkImage is virtualized - all of the code except for ref/unref
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is in the port-specific files.
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gdkinput
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Right now all the code is port-specific. It should be possible
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to share the code in gdkinputnone.c, but probably not worth it;
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I'd like to get rid of the gdk_input_vtable in X11 code -
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it doesn't make sense since you can't switch the type of input
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on the fly.
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gdkpixmap
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All moved into the port-specific file for now. The xpm loader
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should be changed to render with GdkRGB, and thus be
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windowing-system independent, but that requires
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first making GdkRGB able to render onto any arbitrary visual.
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gdkproperty
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All port-specific. Possibly should be X-specific with a higher-level
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clipboard API on top of it.
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gdkregion
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Right now punted to being port-specific, but that probably needs
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to change with the virtualized drawables and GC's.
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gdkrgb
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With a few changes to debugging code, it was already port-independent.
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gdkselection
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Completely port specific. (In fact, really doesn't make sense
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on anything other than X; a higher-level clipboard facility
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should be provided somewhere, though.)
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gdkvisual
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Completely port-specific. (The concepts are rather X-specific)
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gdkwindow
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The window-private data is split between windowing-system independent
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parts and windowing system dependent parts. There are a few
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functions in gdk/gdkwindow.c and the rest is moved off
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into x11/gdkwindow-x11.c
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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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