add cairo

1 files changed, 467 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/src/cairo-xlib-screen.c b/libs/cairo-1.16.0/src/cairo-xlib-screen.c
new file mode 100644
index 0000000..ff3bdfc
--- /dev/null
+++ b/libs/cairo-1.16.0/src/cairo-xlib-screen.c
@@ -0,0 +1,467 @@
+/* Cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Red Hat, Inc.
+ *
+ * Partially on code from xftdpy.c
+ *
+ * Copyright © 2000 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "cairoint.h"
+
+#if !CAIRO_HAS_XLIB_XCB_FUNCTIONS
+
+#include "cairo-xlib-private.h"
+#include "cairo-xlib-xrender-private.h"
+
+#include "cairo-xlib-surface-private.h"
+#include "cairo-error-private.h"
+#include "cairo-list-inline.h"
+
+#include "cairo-fontconfig-private.h"
+
+static int
+parse_boolean (const char *v)
+{
+    char c0, c1;
+
+    c0 = *v;
+    if (c0 == 't' || c0 == 'T' || c0 == 'y' || c0 == 'Y' || c0 == '1')
+	return 1;
+    if (c0 == 'f' || c0 == 'F' || c0 == 'n' || c0 == 'N' || c0 == '0')
+	return 0;
+    if (c0 == 'o')
+    {
+	c1 = v[1];
+	if (c1 == 'n' || c1 == 'N')
+	    return 1;
+	if (c1 == 'f' || c1 == 'F')
+	    return 0;
+    }
+
+    return -1;
+}
+
+static cairo_bool_t
+get_boolean_default (Display       *dpy,
+		     const char    *option,
+		     cairo_bool_t  *value)
+{
+    char *v;
+    int i;
+
+    v = XGetDefault (dpy, "Xft", option);
+    if (v) {
+	i = parse_boolean (v);
+	if (i >= 0) {
+	    *value = i;
+	    return TRUE;
+	}
+    }
+
+    return FALSE;
+}
+
+static cairo_bool_t
+get_integer_default (Display    *dpy,
+		     const char *option,
+		     int        *value)
+{
+    char *v, *e;
+
+    v = XGetDefault (dpy, "Xft", option);
+    if (v) {
+#if CAIRO_HAS_FC_FONT
+	if (FcNameConstant ((FcChar8 *) v, value))
+	    return TRUE;
+#endif
+
+	*value = strtol (v, &e, 0);
+	if (e != v)
+	    return TRUE;
+    }
+
+    return FALSE;
+}
+
+static void
+_cairo_xlib_init_screen_font_options (Display *dpy,
+				      cairo_xlib_screen_t *info)
+{
+    cairo_bool_t xft_hinting;
+    cairo_bool_t xft_antialias;
+    int xft_hintstyle;
+    int xft_rgba;
+    int xft_lcdfilter;
+    cairo_antialias_t antialias;
+    cairo_subpixel_order_t subpixel_order;
+    cairo_lcd_filter_t lcd_filter;
+    cairo_hint_style_t hint_style;
+
+    if (!get_boolean_default (dpy, "antialias", &xft_antialias))
+	xft_antialias = TRUE;
+
+    if (!get_integer_default (dpy, "lcdfilter", &xft_lcdfilter)) {
+	/* -1 is an non-existant Fontconfig constant used to differentiate
+	 * the case when no lcdfilter property is available.
+	 */
+	xft_lcdfilter = -1;
+    }
+
+    if (!get_boolean_default (dpy, "hinting", &xft_hinting))
+	xft_hinting = TRUE;
+
+    if (!get_integer_default (dpy, "hintstyle", &xft_hintstyle))
+	xft_hintstyle = FC_HINT_FULL;
+
+    if (!get_integer_default (dpy, "rgba", &xft_rgba))
+    {
+        cairo_xlib_display_t *display = (cairo_xlib_display_t *) info->device;
+
+	xft_rgba = FC_RGBA_UNKNOWN;
+
+#if RENDER_MAJOR > 0 || RENDER_MINOR >= 6
+        if (display->render_major > 0 || display->render_minor >= 6) {
+	    int render_order = XRenderQuerySubpixelOrder (dpy,
+							  XScreenNumberOfScreen (info->screen));
+
+	    switch (render_order) {
+	    default:
+	    case SubPixelUnknown:
+		xft_rgba = FC_RGBA_UNKNOWN;
+		break;
+	    case SubPixelHorizontalRGB:
+		xft_rgba = FC_RGBA_RGB;
+		break;
+	    case SubPixelHorizontalBGR:
+		xft_rgba = FC_RGBA_BGR;
+		break;
+	    case SubPixelVerticalRGB:
+		xft_rgba = FC_RGBA_VRGB;
+		break;
+	    case SubPixelVerticalBGR:
+		xft_rgba = FC_RGBA_VBGR;
+		break;
+	    case SubPixelNone:
+		xft_rgba = FC_RGBA_NONE;
+		break;
+	    }
+	}
+#endif
+    }
+
+    if (xft_hinting) {
+	switch (xft_hintstyle) {
+	case FC_HINT_NONE:
+	    hint_style = CAIRO_HINT_STYLE_NONE;
+	    break;
+	case FC_HINT_SLIGHT:
+	    hint_style = CAIRO_HINT_STYLE_SLIGHT;
+	    break;
+	case FC_HINT_MEDIUM:
+	    hint_style = CAIRO_HINT_STYLE_MEDIUM;
+	    break;
+	case FC_HINT_FULL:
+	    hint_style = CAIRO_HINT_STYLE_FULL;
+	    break;
+	default:
+	    hint_style = CAIRO_HINT_STYLE_DEFAULT;
+	}
+    } else {
+	hint_style = CAIRO_HINT_STYLE_NONE;
+    }
+
+    switch (xft_rgba) {
+    case FC_RGBA_RGB:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
+	break;
+    case FC_RGBA_BGR:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
+	break;
+    case FC_RGBA_VRGB:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
+	break;
+    case FC_RGBA_VBGR:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
+	break;
+    case FC_RGBA_UNKNOWN:
+    case FC_RGBA_NONE:
+    default:
+	subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
+    }
+
+    switch (xft_lcdfilter) {
+    case FC_LCD_NONE:
+	lcd_filter = CAIRO_LCD_FILTER_NONE;
+	break;
+    case FC_LCD_DEFAULT:
+	lcd_filter = CAIRO_LCD_FILTER_FIR5;
+	break;
+    case FC_LCD_LIGHT:
+	lcd_filter = CAIRO_LCD_FILTER_FIR3;
+	break;
+    case FC_LCD_LEGACY:
+	lcd_filter = CAIRO_LCD_FILTER_INTRA_PIXEL;
+	break;
+    default:
+	lcd_filter = CAIRO_LCD_FILTER_DEFAULT;
+	break;
+    }
+
+    if (xft_antialias) {
+	if (subpixel_order == CAIRO_SUBPIXEL_ORDER_DEFAULT)
+	    antialias = CAIRO_ANTIALIAS_GRAY;
+	else
+	    antialias = CAIRO_ANTIALIAS_SUBPIXEL;
+    } else {
+	antialias = CAIRO_ANTIALIAS_NONE;
+    }
+
+    cairo_font_options_set_hint_style (&info->font_options, hint_style);
+    cairo_font_options_set_antialias (&info->font_options, antialias);
+    cairo_font_options_set_subpixel_order (&info->font_options, subpixel_order);
+    _cairo_font_options_set_lcd_filter (&info->font_options, lcd_filter);
+    cairo_font_options_set_hint_metrics (&info->font_options, CAIRO_HINT_METRICS_ON);
+}
+
+void
+_cairo_xlib_screen_destroy (cairo_xlib_display_t *display,
+			    cairo_xlib_screen_t *info)
+{
+    Display *dpy;
+    int i;
+
+    dpy = display->display;
+
+    while (! cairo_list_is_empty (&info->surfaces)) {
+	cairo_xlib_surface_t *surface;
+
+	surface = cairo_list_first_entry (&info->surfaces,
+					  cairo_xlib_surface_t,
+					  link);
+	cairo_surface_finish (&surface->base);
+    }
+
+    for (i = 0; i < ARRAY_LENGTH (info->gc); i++) {
+	if (info->gc_depths[i] != 0) {
+	    XFreeGC (dpy, info->gc[i]);
+	    info->gc_depths[i] = 0;
+	}
+    }
+
+    while (! cairo_list_is_empty (&info->visuals)) {
+        _cairo_xlib_visual_info_destroy (cairo_list_first_entry (&info->visuals,
+                                                                 cairo_xlib_visual_info_t,
+                                                                 link));
+    }
+
+    cairo_list_del (&info->link);
+
+    free (info);
+}
+
+cairo_status_t
+_cairo_xlib_screen_get (Display *dpy,
+			Screen *screen,
+			cairo_xlib_screen_t **out)
+{
+    cairo_xlib_display_t *display;
+    cairo_device_t *device;
+    cairo_xlib_screen_t *info;
+    cairo_status_t status;
+
+    device = _cairo_xlib_device_create (dpy);
+    status = device->status;
+    if (unlikely (status))
+        goto CLEANUP_DEVICE;
+
+    status =  _cairo_xlib_display_acquire (device, &display);
+    if (unlikely (status))
+        goto CLEANUP_DEVICE;
+
+    info = _cairo_xlib_display_get_screen (display, screen);
+    if (info != NULL) {
+	*out = info;
+	goto CLEANUP_DISPLAY;
+    }
+
+    info = _cairo_malloc (sizeof (cairo_xlib_screen_t));
+    if (unlikely (info == NULL)) {
+	status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	goto CLEANUP_DISPLAY;
+    }
+
+    info->device = device;
+    info->screen = screen;
+    info->has_font_options = FALSE;
+    memset (info->gc_depths, 0, sizeof (info->gc_depths));
+    memset (info->gc, 0, sizeof (info->gc));
+
+    cairo_list_init (&info->surfaces);
+    cairo_list_init (&info->visuals);
+    cairo_list_add (&info->link, &display->screens);
+
+    *out = info;
+
+  CLEANUP_DISPLAY:
+    cairo_device_release (&display->base);
+
+  CLEANUP_DEVICE:
+    cairo_device_destroy (device);
+    return status;
+}
+
+GC
+_cairo_xlib_screen_get_gc (cairo_xlib_display_t *display,
+                           cairo_xlib_screen_t *info,
+			   int depth,
+			   Drawable drawable)
+{
+    GC gc = NULL;
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (info->gc); i++) {
+	if (info->gc_depths[i] == depth) {
+	    info->gc_depths[i] = 0;
+	    gc = info->gc[i];
+	    break;
+	}
+    }
+
+    if (gc == NULL) {
+	XGCValues gcv;
+
+	gcv.graphics_exposures = False;
+	gcv.fill_style = FillTiled;
+	gc = XCreateGC (display->display,
+			drawable,
+			GCGraphicsExposures | GCFillStyle, &gcv);
+    }
+
+    return gc;
+}
+
+void
+_cairo_xlib_screen_put_gc (cairo_xlib_display_t *display,
+                           cairo_xlib_screen_t *info,
+			   int depth,
+			   GC gc)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_LENGTH (info->gc); i++) {
+	if (info->gc_depths[i] == 0)
+	    break;
+    }
+
+    if (i == ARRAY_LENGTH (info->gc)) {
+	/* perform random substitution to ensure fair caching over depths */
+	i = rand () % ARRAY_LENGTH (info->gc);
+	XFreeGC(display->display, info->gc[i]);
+    }
+
+    info->gc[i] = gc;
+    info->gc_depths[i] = depth;
+}
+
+cairo_status_t
+_cairo_xlib_screen_get_visual_info (cairo_xlib_display_t *display,
+                                    cairo_xlib_screen_t *info,
+				    Visual *v,
+				    cairo_xlib_visual_info_t **out)
+{
+    cairo_xlib_visual_info_t *visual;
+    cairo_status_t status;
+
+    cairo_list_foreach_entry (visual,
+                              cairo_xlib_visual_info_t,
+                              &info->visuals,
+                              link)
+    {
+	if (visual->visualid == v->visualid) {
+            *out = visual;
+            return CAIRO_STATUS_SUCCESS;
+	}
+    }
+
+    status = _cairo_xlib_visual_info_create (display->display,
+					     XScreenNumberOfScreen (info->screen),
+					     v->visualid,
+					     &visual);
+    if (unlikely (status))
+	return status;
+
+    cairo_list_add (&visual->link, &info->visuals);
+    *out = visual;
+    return CAIRO_STATUS_SUCCESS;
+}
+
+cairo_font_options_t *
+_cairo_xlib_screen_get_font_options (cairo_xlib_screen_t *info)
+{
+    if (! info->has_font_options) {
+	_cairo_font_options_init_default (&info->font_options);
+	_cairo_font_options_set_round_glyph_positions (&info->font_options, CAIRO_ROUND_GLYPH_POS_ON);
+
+	if (info->screen != NULL) {
+            cairo_xlib_display_t *display;
+
+            if (! _cairo_xlib_display_acquire (info->device, &display)) {
+                _cairo_xlib_init_screen_font_options (display->display,
+                                                      info);
+                cairo_device_release (&display->base);
+            }
+	}
+
+	info->has_font_options = TRUE;
+    }
+
+    return &info->font_options;
+}
+
+#endif /* !CAIRO_HAS_XLIB_XCB_FUNCTIONS */