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OS/2 backend files
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Peter Weilbacher
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77
src/cairo-os2-private.h
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77
src/cairo-os2-private.h
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/* vim: set sw=4 sts=4 et cin: */
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright (c) 2005-2006 netlabs.org
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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 either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is
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* Doodle <doodle@scenergy.dfmk.hu>
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*
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* Contributor(s):
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* Peter Weilbacher <mozilla@Weilbacher.org>
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*/
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#ifndef CAIRO_OS2_PRIVATE_H
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#define CAIRO_OS2_PRIVATE_H
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#define INCL_DOS
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#define INCL_DOSSEMAPHORES
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#define INCL_DOSERRORS
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#define INCL_WIN
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#define INCL_GPI
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#ifdef __WATCOMC__
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# include <os2.h>
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#else
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# include <os2emx.h>
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#endif
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#include <cairo-os2.h>
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#include <cairoint.h>
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typedef struct _cairo_os2_surface
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{
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cairo_surface_t base;
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/* Mutex semaphore to protect private fields from concurrent access */
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HMTX hmtx_use_private_fields;
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/* Private fields: */
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HPS hps_client_window;
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HWND hwnd_client_window;
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BITMAPINFO2 bitmap_info;
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unsigned char *pixels;
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cairo_image_surface_t *image_surface;
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int pixel_array_lend_count;
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HEV hev_pixel_array_came_back;
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RECTL rcl_dirty_area;
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cairo_bool_t dirty_area_present;
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/* General flags: */
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cairo_bool_t blit_as_changes;
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} cairo_os2_surface_t;
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#endif /* CAIRO_OS2_PRIVATE_H */
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1135
src/cairo-os2-surface.c
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1135
src/cairo-os2-surface.c
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201
src/cairo-os2.h
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201
src/cairo-os2.h
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/* vim: set sw=4 sts=4 et cin: */
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright (c) 2005-2006 netlabs.org
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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 either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is
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* Doodle <doodle@scenergy.dfmk.hu>
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*
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* Contributor(s):
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* Peter Weilbacher <mozilla@Weilbacher.org>
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*/
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#ifndef _CAIRO_OS2_H_
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#define _CAIRO_OS2_H_
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#include <cairo.h>
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CAIRO_BEGIN_DECLS
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/* The OS/2 Specific Cairo API */
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/* cairo_os2_init () : */
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/* */
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/* Initializes the Cairo library. This function is automatically */
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/* called if Cairo was compiled to be a DLL (however it's not a */
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/* problem if it's called multiple times), but if you link to */
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/* Cairo statically, you have to call it once to set up Cairo's */
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/* internal structures and mutexes. */
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cairo_public void
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cairo_os2_init (void);
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/* cairo_os2_fini () : */
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/* */
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/* Uninitializes the Cairo library. This function is automatically */
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/* called if Cairo was compiled to be a DLL (however it's not a */
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/* problem if it's called multiple times), but if you link to */
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/* Cairo statically, you have to call it once to shut down Cairo, */
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/* to let it free all the resources it has allocated. */
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cairo_public void
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cairo_os2_fini (void);
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#if CAIRO_HAS_OS2_SURFACE
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/* cairo_os2_surface_create () : */
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/* */
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/* Create a Cairo surface which is bounded to a given presentation */
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/* space (HPS). The surface will be created to have the given */
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/* size. */
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/* By default: Every change to the surface will be made visible */
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/* immediately by blitting it into the window. This */
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/* can be changed with the */
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/* cairo_os2_surface_set_manual_window_refresh () API. */
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/* Note that the surface will contain garbage when created, so the */
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/* pixels have to be initialized by hand first. You can use the */
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/* Cairo functions to fill it with black, or use the */
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/* cairo_surface_mark_dirty () API to fill the surface with pixels */
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/* from the window/HPS. */
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cairo_public cairo_surface_t *
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cairo_os2_surface_create (HPS hps_client_window,
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int width,
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int height);
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/* cairo_os2_surface_set_hwnd () : */
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/* */
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/* Sets window handle for surface. If Cairo wants to blit into the */
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/* window because it's set that it should blit as the surface */
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/* changes (see cairo_os2_surface_set_manual_window_refresh () API),*/
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/* then there are two ways it can choose: */
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/* If it knows the HWND of the surface, then it invalidates that */
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/* area, so the application will get a WM_PAINT message and it can */
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/* call cairo_os2_surface_refresh_window () to redraw that area. */
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/* Otherwise cairo itself will use the HPS it got at surface */
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/* creation time, and blit the pixels itself. */
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/* It's also a solution, but experience shows that if this happens */
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/* from a non-PM thread, then it can screw up PM internals. */
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/* */
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/* So, best solution is to set the HWND for the surface after the */
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/* surface creation, so every blit will be done from application's */
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/* message processing loop, which is the safest way to do. */
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cairo_public void
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cairo_os2_surface_set_hwnd (cairo_surface_t *surface,
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HWND hwnd_client_window);
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/* cairo_os2_surface_set_size () : */
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/* */
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/* When the client window is resized, call this API so the */
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/* underlaying surface will also be resized. This function will */
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/* reallocate everything, so you'll have to redraw everything in */
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/* the surface after this call. */
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/* The surface will contain garbage after the resizing, just like */
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/* after cairo_os2_surface_create (), so all those notes also apply */
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/* here, please read that! */
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/* */
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/* The timeout value is in milliseconds, and tells how much the */
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/* function should wait on other parts of the program to release */
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/* the buffers. It is necessary, because it can be that Cairo is */
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/* just drawing something into the surface while we want to */
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/* destroy and recreate it. */
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/* Returns CAIRO_STATUS_SUCCESS if the surface could be resized, */
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/* or returns other error code if */
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/* - the surface is not a real OS/2 Surface */
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/* - there is not enough memory to resize the surface */
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/* - waiting for all the buffers to be released timed out */
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cairo_public int
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cairo_os2_surface_set_size (cairo_surface_t *surface,
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int new_width,
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int new_height,
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int timeout);
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/* cairo_os2_surface_refresh_window () : */
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/* */
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/* This function can be used to force a repaint of a given area */
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/* of the client window. Most of the time it is called from the */
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/* WM_PAINT processing of the window proc. However, it can be */
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/* called anytime if a given part of the window has to be updated. */
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/* */
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/* The function expects a HPS of the window, and a RECTL to tell */
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/* which part of the window should be redrawn. */
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/* The returned values of WinBeginPaint () is just perfect here, */
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/* but you can also get the HPS by using the WinGetPS () function, */
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/* and you can assemble your own update rect by hand. */
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/* If the hps_begin_paint parameter is NULL, the function will use */
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/* the HPS you passed in to cairo_os2_surface_create (). If the */
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/* prcl_begin_paint_rect parameter is NULL, the function will query */
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/* the current window size and repaint the whole window. */
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/* */
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/* Cairo/2 assumes that if you told the HWND to the surface using */
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/* the cairo_os2_surface_set_hwnd () API, then this function will */
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/* be called by the application every time it gets a WM_PAINT for */
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/* that HWND. If the HWND is told to the surface, Cairo uses this */
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/* function to handle dirty areas too, so you were warned. :) */
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cairo_public void
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cairo_os2_surface_refresh_window (cairo_surface_t *surface,
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HPS hps_begin_paint,
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PRECTL prcl_begin_paint_rect);
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/* cairo_os2_surface_set_manual_window_refresh () : */
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/* */
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/* This API can tell Cairo if it should show every change to this */
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/* surface immediately in the window, or if it should be cached */
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/* and will only be visible if the user calls the */
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/* cairo_os2_surface_refresh_window () API explicitly. */
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/* If the HWND was not told to Cairo, then it will use the HPS to */
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/* blit the graphics. Otherwise it will invalidate the given */
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/* window region so the user will get WM_PAINT to redraw that area */
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/* of the window. */
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/* */
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/* So, if you're only interested in displaying the final result */
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/* after several drawing operations, you might get better */
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/* performance if you put the surface into a manual refresh mode */
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/* by passing a true value to cairo_os2_surface_set_manual_refresh()*/
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/* and then calling cairo_os2_surface_refresh() whenever desired. */
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cairo_public void
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cairo_os2_surface_set_manual_window_refresh (cairo_surface_t *surface,
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cairo_bool_t manual_refresh);
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/* cairo_os2_surface_get_manual_window_refresh () : */
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/* */
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/* This API can return the current mode of the surface. It is */
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/* TRUE by default. */
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cairo_public cairo_bool_t
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cairo_os2_surface_get_manual_window_refresh (cairo_surface_t *surface);
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#endif /* CAIRO_HAS_OS2_SURFACE */
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CAIRO_END_DECLS
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#endif /* _CAIRO_OS2_H_ */
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