src/MacVim/PlugInGUI.m

   1 /* vi:set ts=8 sts=4 sw=4 ft=objc:
   2  *
   3  * VIM - Vi IMproved            by Bram Moolenaar
   4  *                              MacVim GUI port by Bjorn Winckler
   5  *
   6  * Do ":help uganda"  in Vim to read copying and usage conditions.
   7  * Do ":help credits" in Vim to see a list of people who contributed.
   8  * See README.txt for an overview of the Vim source code.
   9  */
  10
  11 /*
  12  * MMPlugInViewHeader
  13  *
  14  * Essentially just a title bar for a plugin view.  Handles drawing the
  15  * drag-and-drop line where a new plugin view will be inserted.
  16  *
  17  * MMPlugInView
  18  *
  19  * This contains a single view added by a plugin.
  20  *
  21  * MMPlugInViewContainer
  22  *
  23  * This contains multiple MMPlugInViews.  It handles the drag and drop aspects
  24  * of the views, as well.
  25  *
  26  * Author: Matt Tolton
  27  */
  28 #import "MacVim.h"
  29
  30 #ifdef MM_ENABLE_PLUGINS
  31
  32 #import "PlugInGUI.h"
  33 #import "CTGradient.h"
  34
  35 NSString *MMPlugInViewPboardType = @"MMPlugInViewPboardType";
  36
  37 @implementation MMPlugInViewHeader
  38
  39 - (void)mouseDown:(NSEvent *)theEvent
  40 {
  41     // Make image from view
  42     NSView *view = self;
  43     [view lockFocus];
  44     NSBitmapImageRep *bitmap = [[[NSBitmapImageRep alloc]
  45         initWithFocusedViewRect: [view bounds]] autorelease];
  46     [view unlockFocus];
  47
  48     NSImage *image = [[[NSImage alloc] initWithSize: [view bounds].size]
  49                         autorelease];
  50     [image addRepresentation:bitmap];
  51
  52     NSPasteboard *pboard = [NSPasteboard pasteboardWithName:NSDragPboard];
  53
  54     [pboard declareTypes:[NSArray arrayWithObject:MMPlugInViewPboardType]
  55                    owner:self];
  56
  57     NSPoint pt = [view convertPoint:[view bounds].origin
  58                              toView:[controller plugInSubview]];
  59     [[controller plugInSubview] dragImage:image
  60                                        at:pt
  61                                    offset:NSMakeSize(0, 0)
  62                                     event:theEvent
  63                                pasteboard:pboard
  64                                    source:controller
  65                                 slideBack:YES];
  66 }
  67
  68 - (void)drawRect:(NSRect)rect
  69 {
  70     NSColor *startColor;
  71     startColor = [NSColor colorWithCalibratedRed:.600
  72                                            green:.600
  73                                             blue:.600
  74                                            alpha:1.0];
  75
  76     NSColor *endColor = [NSColor colorWithCalibratedRed:.800
  77                                                   green:.800
  78                                                    blue:.800
  79                                                   alpha:1.0];
  80
  81     CTGradient *grad = [CTGradient gradientWithBeginningColor:startColor
  82                                                   endingColor:endColor];
  83     [grad fillRect:[self bounds] angle:90];
  84
  85     MMPlugInView *dropView = [[controller container] dropView];
  86
  87     if (dropView == [controller plugInSubview]) {
  88         NSRect insertionRect = NSMakeRect(0,[self bounds].size.height - 2,
  89                 [self bounds].size.width, 2);
  90         [[NSColor redColor] set];
  91         NSRectFill(insertionRect);
  92     }
  93 }
  94
  95 - (BOOL)isOpaque
  96 {
  97     return YES;
  98 }
  99
 100 - (NSRect)dragRect
 101 {
 102     return NSMakeRect(0, [self bounds].size.height - 6, [self bounds].size.width, 6);
 103 }
 104
 105 @end
 106
 107 @implementation MMPlugInView
 108
 109 - (MMPlugInViewController *)controller
 110 {
 111     return controller;
 112 }
 113
 114 @end
 115
 116 @implementation MMPlugInViewController
 117
 118 - (id)initWithView:(NSView *)view title:(NSString *)title
 119 {
 120     if ((self = [super init]) == nil) return nil;
 121
 122     if (![NSBundle loadNibNamed:@"PlugInView" owner:self])
 123         NSLog(@"Error loading PlugIn nib");
 124
 125     [titleField setStringValue:title];
 126
 127     [plugInSubview setMinDimension:50
 128                    andMaxDimension:0.0];
 129
 130     [view setFrame:[contentView bounds]];
 131     [contentView addSubview:view];
 132
 133     return self;
 134 }
 135
 136 - (RBSplitSubview *)plugInSubview
 137 {
 138     return plugInSubview;
 139 }
 140
 141 - (void)moveToContainer:(MMPlugInViewContainer *)container
 142 {
 143     if ([plugInSubview splitView]) {
 144         [plugInSubview removeFromSuperview];
 145     }
 146     [container addSubview:plugInSubview];
 147 }
 148
 149 - (void)moveToContainer:(MMPlugInViewContainer *)container before:(MMPlugInView *)lowerView
 150 {
 151     if ([plugInSubview splitView]) {
 152         [plugInSubview removeFromSuperview];
 153     }
 154     [container addSubview:plugInSubview positioned:NSWindowBelow relativeTo:lowerView];
 155 }
 156
 157 - (MMPlugInViewHeader *)headerView
 158 {
 159     return headerView;
 160 }
 161
 162 - (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal
 163 {
 164     if (isLocal)
 165         return NSDragOperationPrivate;
 166     else
 167         return NSDragOperationNone;
 168 }
 169
 170 - (void)dropViewChanged {
 171     [headerView setNeedsDisplay:YES];
 172 }
 173
 174 - (MMPlugInViewContainer *)container {
 175     return (MMPlugInViewContainer *)[plugInSubview splitView];
 176 }
 177 @end
 178
 179 @implementation MMPlugInViewContainer
 180
 181 - (id)initWithFrame:(NSRect)frame
 182 {
 183     if ((self = [super initWithFrame:frame]) == nil) return nil;
 184
 185     [self registerForDraggedTypes:
 186             [NSArray arrayWithObjects:MMPlugInViewPboardType, nil]];
 187
 188     [self setVertical:NO];
 189     [self setDelegate:self];
 190
 191     fillerView = [[RBSplitSubview alloc] initWithFrame:NSMakeRect(0,0,0,0)];
 192     [fillerView setHidden:YES];
 193
 194     return self;
 195 }
 196
 197 - (void)dealloc
 198 {
 199     [fillerView release]; fillerView = nil;
 200     [super dealloc];
 201 }
 202
 203 - (unsigned int)splitView:(RBSplitView*)sender dividerForPoint:(NSPoint)point
 204                 inSubview:(RBSplitSubview*)subview
 205 {
 206     MMPlugInViewController *controller = [(MMPlugInView *)subview controller];
 207     MMPlugInViewHeader *header = [controller headerView];
 208
 209     if ([header mouse:[header convertPoint:point fromView:sender]
 210                inRect:[header dragRect]])
 211         return [subview position] - 1;
 212
 213     return NSNotFound;
 214 }
 215
 216 - (NSRect)splitView:(RBSplitView*)sender cursorRect:(NSRect)rect
 217          forDivider:(unsigned int)theDivider
 218 {
 219
 220     if (theDivider != 0) return NSZeroRect;
 221
 222     int i;
 223     for (i = 1;; i++) {
 224         MMPlugInView *view = (MMPlugInView *)[sender subviewAtPosition:i];
 225         if (!view) break;
 226
 227         MMPlugInViewHeader *header = [[view controller] headerView];
 228         NSRect rect = [header dragRect];
 229         rect = [sender convertRect:rect fromView:header];
 230         [sender addCursorRect:rect
 231                        cursor:[RBSplitView cursor:RBSVHorizontalCursor]];
 232
 233     }
 234
 235     return NSZeroRect;
 236 }
 237
 238 - (void)clearDragInfo
 239 {
 240     if (dropView) {
 241         MMPlugInView *save = dropView;
 242         dropView = nil;
 243         [[save controller] dropViewChanged];
 244     }
 245 }
 246
 247 // point should be in the window's coordinate system
 248 - (void)updateDragInfo:(id<NSDraggingInfo>)info
 249 {
 250
 251     [self clearDragInfo];
 252
 253     if (!([info draggingSourceOperationMask] & NSDragOperationPrivate)) return;
 254
 255     if (![[info draggingSource] isKindOfClass:[MMPlugInViewController class]]) return;
 256
 257     // for now has to be THIS container.  in the future, it will be ok for any
 258     // container associated with the same vim instance
 259     if ([[info draggingSource] container] != self) return;
 260
 261     // XXX for now we just use the view that the mouse is currently over, and
 262     // always insert "above" that view.  In the future, we might want to try to
 263     // find the divider that the mouse is closest to and have the dropView be
 264     // the view below that divider.
 265
 266     NSPoint point = [info draggingLocation];
 267
 268     int i;
 269     for (i = 0;; i++) {
 270         MMPlugInView *subview = (MMPlugInView *)[self subviewAtPosition:i];
 271         if (!subview) break;
 272
 273         if ([subview mouse:[subview convertPoint:point fromView:nil]
 274                     inRect:[subview bounds]]) {
 275             dropView = subview;
 276             break;
 277         }
 278     }
 279
 280     if ([[info draggingSource] plugInSubview] == dropView)
 281         dropView = nil;
 282
 283     if (dropView) [[dropView controller] dropViewChanged];
 284 }
 285
 286 - (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender
 287 {
 288     [self updateDragInfo:sender];
 289
 290     if (dropView != nil)
 291         return NSDragOperationPrivate;
 292     else
 293         return NSDragOperationNone;
 294 }
 295
 296 - (NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)sender
 297 {
 298     [self updateDragInfo:sender];
 299
 300     if (dropView != nil)
 301         return NSDragOperationPrivate;
 302
 303     return NSDragOperationNone;
 304 }
 305
 306 - (BOOL)prepareForDragOperation:(id<NSDraggingInfo>)sender
 307 {
 308     [self updateDragInfo:sender];
 309     return dropView != nil;
 310 }
 311
 312 - (BOOL)performDragOperation:(id<NSDraggingInfo>)sender
 313 {
 314     MMPlugInViewController *source = [sender draggingSource];
 315     [source moveToContainer:self before:dropView];
 316     [self clearDragInfo];
 317     return YES;
 318 }
 319
 320 - (void)draggingExited:(id<NSDraggingInfo>)sender
 321 {
 322     [self clearDragInfo];
 323 }
 324
 325
 326 - (MMPlugInView *)dropView {
 327     return dropView;
 328 }
 329
 330 @end
 331
 332 #endif