1 files changed, 180 insertions, 0 deletions
diff --git a/frontends/cocoa/ArrowBox.m b/frontends/cocoa/ArrowBox.m
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+++ b/frontends/cocoa/ArrowBox.m
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+/* Copyright 2011 Sven Weidauer
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#import "ArrowBox.h"
+
+#import "desktop/system_colour.h"
+#import "cocoa/plotter.h"
+
+@interface ArrowBox ()
+
+@property (nonatomic) NSColor *backgroundColor;
+
+@end
+
+@implementation ArrowBox
+
+@synthesize arrowPosition;
+@synthesize arrowSize;
+@synthesize arrowEdge;
+@synthesize cornerRadius;
+
+- (NSColor *)backgroundColor {
+    if (!_backgroundColor) {
+        colour fill_colour;
+        nserror res = ns_system_colour_char("Window", &fill_colour);
+        NSAssert(res == NSERROR_OK, @"Expect to find the window colour");
+        _backgroundColor = cocoa_convert_colour(fill_colour);
+    }
+
+    return _backgroundColor;
+}
+
+- (void)setArrowEdge:(ArrowEdge)newEdge
+{
+    if (arrowEdge == newEdge) {
+        return;
+    }
+
+    arrowEdge = newEdge;
+
+    [self setNeedsDisplay:YES];
+    updateShadow = YES;
+}
+
+- (void)setArrowSize:(CGFloat)newSize
+{
+    arrowSize = newSize;
+    [self setNeedsDisplay:YES];
+    updateShadow = YES;
+}
+
+- (void)setCornerRadius:(CGFloat)newRadius
+{
+    cornerRadius = newRadius;
+    [self setNeedsDisplay:YES];
+    updateShadow = YES;
+}
+
+- (void)setArrowPosition:(CGFloat)newPosition
+{
+    arrowPosition = newPosition;
+
+    [self setNeedsDisplay:YES];
+    updateShadow = YES;
+}
+
+- (id)initWithFrame:(NSRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        arrowPosition = 50;
+        cornerRadius = 10;
+        arrowSize = 15;
+    }
+    return self;
+}
+
+- (void)drawRect:(NSRect)dirtyRect
+{
+    [[NSColor clearColor] set];
+    [NSBezierPath fillRect:dirtyRect];
+
+    NSBezierPath *path = [NSBezierPath bezierPath];
+
+    NSRect bounds = [self.window convertRectToScreen:NSInsetRect([self bounds], 2, 2)];
+    bounds.origin.x = floor(bounds.origin.x);
+    bounds.origin.y = floor(bounds.origin.y);
+    bounds.size.width = floor(bounds.size.width);
+    bounds.size.height = floor(bounds.size.height);
+    bounds = [self.window convertRectFromScreen:bounds];
+
+    const CGFloat right = bounds.size.width - arrowSize;
+    const CGFloat top = bounds.size.height - arrowSize;
+    const CGFloat left = arrowSize;
+    const CGFloat bottom = arrowSize;
+
+    [path setLineJoinStyle:NSRoundLineJoinStyle];
+
+    [path moveToPoint:NSMakePoint(right - cornerRadius, top)];
+
+    if (arrowEdge == ArrowTopEdge) {
+        [path lineToPoint:NSMakePoint(arrowPosition + arrowSize, top)];
+        [path lineToPoint:NSMakePoint(arrowPosition, top + arrowSize)];
+        [path lineToPoint:NSMakePoint(arrowPosition - arrowSize, top)];
+    }
+
+    [path appendBezierPathWithArcFromPoint:NSMakePoint(left, top)
+                                   toPoint:NSMakePoint(left, top - cornerRadius)
+                                    radius:cornerRadius];
+
+    if (arrowEdge == ArrowLeftEdge) {
+        [path lineToPoint:NSMakePoint(left, bottom + arrowPosition + arrowSize)];
+        [path lineToPoint:NSMakePoint(left - arrowSize, bottom + arrowPosition)];
+        [path lineToPoint:NSMakePoint(left, bottom + arrowPosition - arrowSize)];
+    }
+
+    [path appendBezierPathWithArcFromPoint:NSMakePoint(left, bottom)
+                                   toPoint:NSMakePoint(left + cornerRadius, bottom)
+                                    radius:cornerRadius];
+
+    if (arrowEdge == ArrowBottomEdge) {
+        [path lineToPoint:NSMakePoint(arrowPosition - arrowSize, bottom)];
+        [path lineToPoint:NSMakePoint(arrowPosition, bottom - arrowSize)];
+        [path lineToPoint:NSMakePoint(arrowPosition + arrowSize, bottom)];
+    }
+
+    [path appendBezierPathWithArcFromPoint:NSMakePoint(right, bottom)
+                                   toPoint:NSMakePoint(right, bottom + cornerRadius)
+                                    radius:cornerRadius];
+
+    if (arrowEdge == ArrowRightEdge) {
+        [path lineToPoint:NSMakePoint(right, bottom + arrowPosition - arrowSize)];
+        [path lineToPoint:NSMakePoint(right + arrowSize, bottom + arrowPosition)];
+        [path lineToPoint:NSMakePoint(right, bottom + arrowPosition + arrowSize)];
+    }
+
+    [path appendBezierPathWithArcFromPoint:NSMakePoint(right, top)
+                                   toPoint:NSMakePoint(right - cornerRadius, top)
+                                    radius:cornerRadius];
+    [path closePath];
+
+    [[NSColor colorWithDeviceWhite:1.0 alpha:0.4] set];
+    [self.backgroundColor setFill];
+
+    NSAffineTransform *transform = [NSAffineTransform transform];
+    [transform translateXBy:bounds.origin.x yBy:bounds.origin.y];
+    [transform concat];
+
+    [path setLineWidth:2.0];
+    [path fill];
+    [path stroke];
+
+    if (updateShadow) {
+        [[self window] invalidateShadow];
+        [[self window] update];
+        updateShadow = NO;
+    }
+}
+
+@end