From a9b60753f9c7a57aae2af50943e3ad81203e73e1 Mon Sep 17 00:00:00 2001
From: Sven Weidauer <sven.weidauer@gmail.com>
Date: Thu, 13 Jan 2011 15:19:47 +0000
Subject: Implemented tree view/history window.

svn path=/trunk/netsurf/; revision=11309
---
 cocoa/TreeView.m | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 cocoa/TreeView.m

(limited to 'cocoa/TreeView.m')

diff --git a/cocoa/TreeView.m b/cocoa/TreeView.m
new file mode 100644
index 000000000..00fb4808c
--- /dev/null
+++ b/cocoa/TreeView.m
@@ -0,0 +1,131 @@
+/*
+ * Copyright 2011 Sven Weidauer <sven.weidauer@gmail.com>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf 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; version 2 of the License.
+ *
+ * NetSurf 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 "TreeView.h"
+
+#import "desktop/tree.h"
+#import "desktop/plotters.h"
+#import "desktop/history_global_core.h"
+
+#define UNIMPL() NSLog( @"Function '%s' unimplemented", __func__ )
+
+@implementation TreeView
+
+static void tree_redraw_request( int x, int y, int w, int h, void *data );
+static void tree_resized( struct tree *tree, int w, int h, void *data );
+static void tree_scroll_visible( int y, int height, void *data );
+static void tree_get_window_dimensions( int *width, int *height, void *data );
+
+static const struct treeview_table cocoa_tree_callbacks = {
+	.redraw_request = tree_redraw_request,
+	.resized = tree_resized,
+	.scroll_visible = tree_scroll_visible,
+	.get_window_dimensions = tree_get_window_dimensions
+};
+
+- (id)initWithFrame:(NSRect)frame 
+{
+    if ((self = [super initWithFrame:frame]) == nil) return nil;
+
+	treeHandle = tree_create( history_global_get_tree_flags(), &cocoa_tree_callbacks, self );
+	if (NULL == treeHandle) {
+		[self release];
+		self = nil;
+	}
+	history_global_initialise( treeHandle, "" );
+    return self;
+}
+
+- (void) dealloc;
+{
+	tree_delete( treeHandle );
+	
+	[super dealloc];
+}
+
+- (void)drawRect:(NSRect)dirtyRect 
+{
+	tree_set_redraw( treeHandle, true );
+	tree_draw( treeHandle, 0, 0, NSMinX( dirtyRect ), NSMinY( dirtyRect ), NSWidth( dirtyRect ), NSHeight( dirtyRect ) );
+}
+
+- (BOOL) isFlipped;
+{
+	return YES;
+}
+
+- (void) mouseDown: (NSEvent *)theEvent;
+{
+	NSPoint point = [self convertPoint: [theEvent locationInWindow] fromView: nil];
+	dragStart = point;
+	
+	tree_mouse_action( treeHandle, BROWSER_MOUSE_PRESS_1, point.x, point.y );
+}
+
+- (void) mouseUp: (NSEvent *)theEvent;
+{
+	NSPoint point = [self convertPoint: [theEvent locationInWindow] fromView: nil];
+	if (isDragging) {
+		tree_drag_end( treeHandle, BROWSER_MOUSE_DRAG_1, dragStart.x, dragStart.y, point.x, point.y );
+		isDragging = NO;
+	} else {
+		tree_mouse_action( treeHandle, BROWSER_MOUSE_CLICK_1, point.x, point.y );
+	}
+}
+
+
+#define squared(x) ((x)*(x))
+#define MinDragDistance (5.0)
+
+- (void) mouseDragged: (NSEvent *)theEvent;
+{
+	NSPoint point = [self convertPoint: [theEvent locationInWindow] fromView: nil];
+	
+	if (!isDragging) {
+		const CGFloat distance = squared( dragStart.x - point.x ) + squared( dragStart.y - point.y );
+		if (distance >= squared( MinDragDistance)) isDragging = YES;
+	}
+	
+	if (isDragging) {
+		tree_mouse_action( treeHandle, BROWSER_MOUSE_DRAG_1, point.x, point.y );
+	}		
+}
+
+static void tree_redraw_request( int x, int y, int w, int h, void *data )
+{
+	[(TreeView *)data setNeedsDisplayInRect: NSMakeRect( x, y, w, h )];
+}
+
+static void tree_resized( struct tree *tree, int w, int h, void *data )
+{
+	[(TreeView *)data setMinimumSize: NSMakeSize( w, h )];
+}
+
+static void tree_scroll_visible( int y, int height, void *data )
+{
+	[(TreeView *)data scrollPoint: NSMakePoint( 0, y )];
+}
+
+static void tree_get_window_dimensions( int *width, int *height, void *data )
+{
+	NSSize size = [(TreeView *)data frame].size;
+	*width = size.width;
+	*height = size.height;
+}
+
+@end
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