From af1e168bbbbaddbf564c661111a74064fbbb5334 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 9 May 2008 15:25:40 +0200
Subject: [PATCH] [cairo-meta/analysis-surface] Make width/height of -1,-1 mean
 unbounded surface

---
 src/cairo-analysis-surface.c | 15 +++++++++++----
 src/cairo-meta-surface.c     |  3 +++
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/cairo-analysis-surface.c b/src/cairo-analysis-surface.c
index c6253803f..2dc149d45 100644
--- a/src/cairo-analysis-surface.c
+++ b/src/cairo-analysis-surface.c
@@ -673,10 +673,17 @@ _cairo_analysis_surface_create (cairo_surface_t		*target,
     _cairo_region_init (&surface->supported_region);
     _cairo_region_init (&surface->fallback_region);
 
-    surface->current_clip.x = 0;
-    surface->current_clip.y = 0;
-    surface->current_clip.width = width;
-    surface->current_clip.height = height;
+    if (width == -1 && height == -1) {
+	surface->current_clip.x      = CAIRO_RECT_INT_MIN;
+	surface->current_clip.y      = CAIRO_RECT_INT_MIN;
+	surface->current_clip.width  = CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN;
+	surface->current_clip.height = CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN;
+    } else {
+	surface->current_clip.x = 0;
+	surface->current_clip.y = 0;
+	surface->current_clip.width = width;
+	surface->current_clip.height = height;
+    }
 
     return &surface->base;
 }
diff --git a/src/cairo-meta-surface.c b/src/cairo-meta-surface.c
index 61c9b5d3e..f7ce2d701 100644
--- a/src/cairo-meta-surface.c
+++ b/src/cairo-meta-surface.c
@@ -570,6 +570,9 @@ _cairo_meta_surface_get_extents (void			 *abstract_surface,
 {
     cairo_meta_surface_t *surface = abstract_surface;
 
+    if (surface->width_pixels == -1 && surface->height_pixels == -1)
+	return CAIRO_INT_STATUS_UNSUPPORTED;
+
     rectangle->x = 0;
     rectangle->y = 0;
     rectangle->width = surface->width_pixels;