1 files changed, 152 insertions, 0 deletions
diff --git a/AppKit/GTMGeometryUtils.m b/AppKit/GTMGeometryUtils.m
new file mode 100644
index 0000000..efc543e
--- /dev/null
+++ b/AppKit/GTMGeometryUtils.m
@@ -0,0 +1,152 @@
+//
+//  GTMGeometryUtils.m
+//
+//  Copyright 2006-2008 Google Inc.
+//
+//  Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+// 
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+//  License for the specific language governing permissions and limitations under
+//  the License.
+//
+
+#import "GTMGeometryUtils.h"
+
+float GTMGetMainDisplayHeight(void) {
+  float height = 0;
+  NSArray *screens = [NSScreen screens];
+  // We may have a headless machine without any screens. In this case we
+  // return 0.
+  if ([screens count] > 0) {
+    height = NSHeight([(NSScreen*)[screens objectAtIndex: 0] frame]);
+  }
+  return height;
+}
+ 
+
+//  Rect conversion routines.
+HIRect GTMGlobalNSRectToHIRect(NSRect inRect) {
+  HIRect theRect;
+  theRect.origin = GTMGlobalNSPointToHIPoint(inRect.origin);
+  theRect.origin.y -= inRect.size.height;
+  theRect.size = CGSizeMake(inRect.size.width, inRect.size.height);
+  return theRect;
+}
+
+
+HIRect GTMRectToHIRect(Rect inRect) {
+  HIRect theRect;
+  theRect.origin = CGPointMake(inRect.left,inRect.top);
+  theRect.size = CGSizeMake(inRect.right - inRect.left, inRect.bottom - inRect.top);
+  return theRect;
+}
+
+
+NSRect GTMGlobalHIRectToNSRect(HIRect inRect) {
+  NSRect theRect;
+  theRect.origin = GTMGlobalHIPointToNSPoint(inRect.origin);
+  theRect.origin.y -= inRect.size.height;
+  theRect.size = NSMakeSize(inRect.size.width, inRect.size.height);
+  return theRect;
+}
+
+
+Rect GTMHIRectToRect(HIRect inRect) {
+  Rect theRect;
+  theRect.left = inRect.origin.x;
+  theRect.right = ceilf(inRect.origin.x + inRect.size.width);
+  theRect.top = inRect.origin.y;
+  theRect.bottom = ceilf(inRect.origin.y + inRect.size.height);
+  return theRect;
+}
+
+/// Align rectangles
+//
+//  Args:
+//    alignee - rect to be aligned
+//    aligner - rect to be aligned to
+//    alignment - alignment to be applied to alignee based on aligner
+
+NSRect GTMAlignRectangles(NSRect alignee, NSRect aligner, NSImageAlignment alignment) {
+  switch (alignment) {
+    case NSImageAlignTop:
+      alignee.origin.x = aligner.origin.x + (NSWidth(aligner) * .5f - NSWidth(alignee) * .5f);
+      alignee.origin.y = aligner.origin.y + NSHeight(aligner) - NSHeight(alignee);
+      break;
+      
+    case NSImageAlignTopLeft:
+      alignee.origin.x = aligner.origin.x;
+      alignee.origin.y = aligner.origin.y + NSHeight(aligner) - NSHeight(alignee);
+    break;
+    
+    case NSImageAlignTopRight:
+      alignee.origin.x = aligner.origin.x + NSWidth(aligner) - NSWidth(alignee);
+      alignee.origin.y = aligner.origin.y + NSHeight(aligner) - NSHeight(alignee);
+      break;
+
+    case NSImageAlignLeft:
+      alignee.origin.x = aligner.origin.x;
+      alignee.origin.y = aligner.origin.y + (NSHeight(aligner) * .5f - NSHeight(alignee) * .5f);
+      break;
+      
+    case NSImageAlignBottomLeft:
+      alignee.origin.x = aligner.origin.x;
+      alignee.origin.y = aligner.origin.y;
+      break;
+
+    case NSImageAlignBottom:
+      alignee.origin.x = aligner.origin.x + (NSWidth(aligner) * .5f - NSWidth(alignee) * .5f);
+      alignee.origin.y = aligner.origin.y;
+      break;
+
+    case NSImageAlignBottomRight:
+      alignee.origin.x = aligner.origin.x + NSWidth(aligner) - NSWidth(alignee);
+      alignee.origin.y = aligner.origin.y;
+      break;
+      
+    case NSImageAlignRight:
+      alignee.origin.x = aligner.origin.x + NSWidth(aligner) - NSWidth(alignee);
+      alignee.origin.y = aligner.origin.y + (NSHeight(aligner) * .5f - NSHeight(alignee) * .5f);
+      break;
+      
+    default:
+    case NSImageAlignCenter:
+      alignee.origin.x = aligner.origin.x + (NSWidth(aligner) * .5f - NSWidth(alignee) * .5f);
+      alignee.origin.y = aligner.origin.y + (NSHeight(aligner) * .5f - NSHeight(alignee) * .5f);
+      break;
+  }
+  return alignee;
+}
+
+NSRect GTMScaleRectangleToSize(NSRect scalee, NSSize size, NSImageScaling scaling) {
+  switch (scaling) {
+    case NSScaleProportionally: {
+      float height = NSHeight(scalee);
+      float width = NSWidth(scalee);
+      if (isnormal(height) && isnormal(width) && 
+          (height > size.height || width > size.width)) {
+        float horiz = size.width / width;
+        float vert = size.height / height;
+        float newScale = horiz < vert ? horiz : vert;
+        scalee = GTMNSRectScale(scalee, newScale, newScale);
+      }
+      break;
+    }
+      
+    case NSScaleToFit:
+      scalee.size = size;
+      break;
+      
+    case NSScaleNone:
+    default:
+      // Do nothing
+      break;
+  }
+  return scalee;
+}