1 files changed, 90 insertions, 0 deletions
diff --git a/src/linux/Surface.h b/src/linux/Surface.h
new file mode 100644
index 0000000..d2a0dba
--- /dev/null
+++ b/src/linux/Surface.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2011  Alex Merry <dev@randomguy3.me.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "TZFoundation.h"
+#import "RenderContext.h"
+#import "Transformer.h"
+
+@protocol Surface;
+
+@protocol RenderDelegate
+- (void) renderWithContext:(id<RenderContext>)context onSurface:(id<Surface>)surface;
+@end
+
+/**
+ * Represents a surface that can be rendered to
+ *
+ * This protocol should be implemented by drawing surfaces.  It
+ * provides geometry information and methods to invalidate
+ * regions of the surface, triggering a redraw.
+ *
+ * The surface should send a "SurfaceSizeChanged" notification
+ * when the width or height changes.
+ */
+@protocol Surface
+
+/**
+ * The width of the surface, in surface units
+ *
+ * The surface should send a "SurfaceSizeChanged" notification
+ * when this property changes.
+ */
+@property (readonly) int width;
+/**
+ * The height of the surface, in surface units
+ *
+ * The surface should send a "SurfaceSizeChanged" notification
+ * when this property changes.
+ */
+@property (readonly) int height;
+/**
+ * The transformer that converts between graph units and surface units
+ */
+@property (readonly) Transformer *transformer;
+/**
+ * The render delegate.
+ *
+ * This will be used to redraw (parts of) the surface when necessary.
+ */
+@property (assign) id<RenderDelegate> renderDelegate;
+
+/**
+ * Create a render context for the surface.
+ */
+- (id<RenderContext>) createRenderContext;
+/**
+ * Invalidate a portion of the surface.
+ *
+ * This will request that part of the surface be redrawn.
+ */
+- (void) invalidateRect:(NSRect)rect;
+/**
+ * Invalidate the whole surface.
+ *
+ * This will request that the whole surface be redrawn.
+ */
+- (void) invalidate;
+
+- (void) zoomIn;
+- (void) zoomOut;
+- (void) zoomReset;
+- (void) zoomInAboutPoint:(NSPoint)p;
+- (void) zoomOutAboutPoint:(NSPoint)p;
+- (void) zoomResetAboutPoint:(NSPoint)p;
+@end
+
+// vim:ft=objc:ts=8:et:sts=4:sw=4