318 lines
11 KiB
Plaintext
318 lines
11 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "imgIContainer.h"
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#include "nsCocoaUtils.h"
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#include "nsCursorManager.h"
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#include "nsObjCExceptions.h"
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#include <math.h>
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static nsCursorManager *gInstance;
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static CGFloat sCursorScaleFactor = 0.0f;
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static imgIContainer *sCursorImgContainer = nullptr;
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static const nsCursor sCustomCursor = eCursorCount;
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/*! @category nsCursorManager(PrivateMethods)
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Private methods for the cursor manager class.
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*/
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@interface nsCursorManager(PrivateMethods)
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/*! @method getCursor:
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@abstract Get a reference to the native Mac representation of a cursor.
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@discussion Gets a reference to the Mac native implementation of a cursor.
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If the cursor has been requested before, it is retreived from the cursor cache,
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otherwise it is created and cached.
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@param aCursor the cursor to get
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@result the Mac native implementation of the cursor
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*/
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- (nsMacCursor *) getCursor: (nsCursor) aCursor;
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/*! @method setMacCursor:
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@abstract Set the current Mac native cursor
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@discussion Sets the current cursor - this routine is what actually causes the cursor to change.
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The argument is retained and the old cursor is released.
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@param aMacCursor the cursor to set
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@result NS_OK
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*/
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- (nsresult) setMacCursor: (nsMacCursor*) aMacCursor;
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/*! @method createCursor:
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@abstract Create a Mac native representation of a cursor.
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@discussion Creates a version of the Mac native representation of this cursor
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@param aCursor the cursor to create
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@result the Mac native implementation of the cursor
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*/
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+ (nsMacCursor *) createCursor: (enum nsCursor) aCursor;
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@end
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@implementation nsCursorManager
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+ (nsCursorManager *) sharedInstance
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
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if (!gInstance) {
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gInstance = [[nsCursorManager alloc] init];
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}
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return gInstance;
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NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
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}
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+ (void) dispose
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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[gInstance release];
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gInstance = nil;
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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+ (nsMacCursor *) createCursor: (enum nsCursor) aCursor
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
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switch(aCursor)
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{
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SEL cursorSelector;
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case eCursor_standard:
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return [nsMacCursor cursorWithCursor:[NSCursor arrowCursor] type:aCursor];
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case eCursor_wait:
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case eCursor_spinning:
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{
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return [nsMacCursor cursorWithCursor:[NSCursor busyButClickableCursor] type:aCursor];
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}
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case eCursor_select:
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return [nsMacCursor cursorWithCursor:[NSCursor IBeamCursor] type:aCursor];
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case eCursor_hyperlink:
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return [nsMacCursor cursorWithCursor:[NSCursor pointingHandCursor] type:aCursor];
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case eCursor_crosshair:
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return [nsMacCursor cursorWithCursor:[NSCursor crosshairCursor] type:aCursor];
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case eCursor_move:
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return [nsMacCursor cursorWithImageNamed:@"move" hotSpot:NSMakePoint(12,12) type:aCursor];
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case eCursor_help:
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return [nsMacCursor cursorWithImageNamed:@"help" hotSpot:NSMakePoint(12,12) type:aCursor];
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case eCursor_copy:
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cursorSelector = @selector(dragCopyCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector] ?
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[NSCursor performSelector:cursorSelector] :
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[NSCursor arrowCursor] type:aCursor];
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case eCursor_alias:
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cursorSelector = @selector(dragLinkCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector] ?
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[NSCursor performSelector:cursorSelector] :
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[NSCursor arrowCursor] type:aCursor];
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case eCursor_context_menu:
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cursorSelector = @selector(contextualMenuCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector] ?
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[NSCursor performSelector:cursorSelector] :
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[NSCursor arrowCursor] type:aCursor];
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case eCursor_cell:
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return [nsMacCursor cursorWithImageNamed:@"cell" hotSpot:NSMakePoint(12,12) type:aCursor];
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case eCursor_grab:
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return [nsMacCursor cursorWithCursor:[NSCursor openHandCursor] type:aCursor];
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case eCursor_grabbing:
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return [nsMacCursor cursorWithCursor:[NSCursor closedHandCursor] type:aCursor];
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case eCursor_zoom_in:
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return [nsMacCursor cursorWithImageNamed:@"zoomIn" hotSpot:NSMakePoint(10,10) type:aCursor];
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case eCursor_zoom_out:
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return [nsMacCursor cursorWithImageNamed:@"zoomOut" hotSpot:NSMakePoint(10,10) type:aCursor];
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case eCursor_vertical_text:
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return [nsMacCursor cursorWithImageNamed:@"vtIBeam" hotSpot:NSMakePoint(12,11) type:aCursor];
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case eCursor_all_scroll:
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return [nsMacCursor cursorWithCursor:[NSCursor openHandCursor] type:aCursor];
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case eCursor_not_allowed:
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case eCursor_no_drop:
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cursorSelector = @selector(operationNotAllowedCursor);
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return [nsMacCursor cursorWithCursor:[NSCursor respondsToSelector:cursorSelector] ?
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[NSCursor performSelector:cursorSelector] :
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[NSCursor arrowCursor] type:aCursor];
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// Resize Cursors:
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// North
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case eCursor_n_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeUpCursor] type:aCursor];
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// North East
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case eCursor_ne_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNE" hotSpot:NSMakePoint(12,11) type:aCursor];
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// East
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case eCursor_e_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeRightCursor] type:aCursor];
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// South East
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case eCursor_se_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeSE" hotSpot:NSMakePoint(12,12) type:aCursor];
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// South
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case eCursor_s_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeDownCursor] type:aCursor];
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// South West
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case eCursor_sw_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeSW" hotSpot:NSMakePoint(10,12) type:aCursor];
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// West
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case eCursor_w_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeLeftCursor] type:aCursor];
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// North West
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case eCursor_nw_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNW" hotSpot:NSMakePoint(11,11) type:aCursor];
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// North & South
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case eCursor_ns_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeUpDownCursor] type:aCursor];
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// East & West
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case eCursor_ew_resize:
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return [nsMacCursor cursorWithCursor:[NSCursor resizeLeftRightCursor] type:aCursor];
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// North East & South West
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case eCursor_nesw_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNESW" hotSpot:NSMakePoint(12,12) type:aCursor];
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// North West & South East
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case eCursor_nwse_resize:
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return [nsMacCursor cursorWithImageNamed:@"sizeNWSE" hotSpot:NSMakePoint(12,12) type:aCursor];
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// Column Resize
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case eCursor_col_resize:
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return [nsMacCursor cursorWithImageNamed:@"colResize" hotSpot:NSMakePoint(12,12) type:aCursor];
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// Row Resize
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case eCursor_row_resize:
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return [nsMacCursor cursorWithImageNamed:@"rowResize" hotSpot:NSMakePoint(12,12) type:aCursor];
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default:
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return [nsMacCursor cursorWithCursor:[NSCursor arrowCursor] type:aCursor];
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}
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NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
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}
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- (id) init
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
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if ((self = [super init])) {
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mCursors = [[NSMutableDictionary alloc] initWithCapacity:25];
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}
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return self;
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NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
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}
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- (nsresult) setCursor: (enum nsCursor) aCursor
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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// No more plugins, so we can implement M1736049.
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#if(0)
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// Some plugins mess with our cursors and set a cursor that even
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// [NSCursor currentCursor] doesn't know about. In case that happens, just
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// reset the state.
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[[NSCursor currentCursor] set];
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#endif
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nsCursor oldType = [mCurrentMacCursor type];
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if (oldType != aCursor) {
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if (aCursor == eCursor_none) {
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[NSCursor hide];
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} else if (oldType == eCursor_none) {
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[NSCursor unhide];
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}
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}
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[self setMacCursor:[self getCursor:aCursor]];
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// if a custom cursor was previously set, release sCursorImgContainer
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if (oldType == sCustomCursor) {
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NS_IF_RELEASE(sCursorImgContainer);
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}
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return NS_OK;
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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- (nsresult) setMacCursor: (nsMacCursor*) aMacCursor
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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if (mCurrentMacCursor != aMacCursor || ![mCurrentMacCursor isSet]) {
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[aMacCursor retain];
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[mCurrentMacCursor unset];
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[aMacCursor set];
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[mCurrentMacCursor release];
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mCurrentMacCursor = aMacCursor;
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}
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return NS_OK;
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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- (nsresult) setCursorWithImage: (imgIContainer*) aCursorImage hotSpotX: (uint32_t) aHotspotX hotSpotY: (uint32_t) aHotspotY
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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// As the user moves the mouse, this gets called repeatedly with the same aCursorImage
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//if (sCursorImgContainer == aCursorImage && sCursorScaleFactor == scaleFactor && mCurrentMacCursor) {
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if (sCursorImgContainer == aCursorImage && mCurrentMacCursor) {
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// [self setMacCursor:mCurrentMacCursor]; // bug 1736049
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// Native dragging can unset our cursor apparently (see bug 1739352).
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if (MOZ_UNLIKELY(![mCurrentMacCursor isSet])) {
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[mCurrentMacCursor set];
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}
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return NS_OK;
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}
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[[NSCursor currentCursor] set];
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int32_t width = 0, height = 0;
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aCursorImage->GetWidth(&width);
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aCursorImage->GetHeight(&height);
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// prevent DoS attacks
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if (MOZ_UNLIKELY(width > 128 || height > 128)) {
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return NS_OK;
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}
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NSImage *cursorImage;
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nsresult rv = nsCocoaUtils::CreateNSImageFromImageContainer(aCursorImage, imgIContainer::FRAME_FIRST, &cursorImage);
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if (NS_FAILED(rv) || !cursorImage) {
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return NS_ERROR_FAILURE;
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}
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// if the hotspot is nonsensical, make it 0,0
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aHotspotX = (aHotspotX > (uint32_t)width - 1) ? 0 : aHotspotX;
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aHotspotY = (aHotspotY > (uint32_t)height - 1) ? 0 : aHotspotY;
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NSPoint hotSpot = ::NSMakePoint(aHotspotX, aHotspotY);
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[self setMacCursor:[nsMacCursor cursorWithCursor:[[NSCursor alloc] initWithImage:cursorImage hotSpot:hotSpot] type:sCustomCursor]];
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[cursorImage release];
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NS_IF_RELEASE(sCursorImgContainer);
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sCursorImgContainer = aCursorImage;
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//sCursorScaleFactor = scaleFactor;
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NS_ADDREF(sCursorImgContainer);
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return NS_OK;
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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- (nsMacCursor *) getCursor: (enum nsCursor) aCursor
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
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nsMacCursor * result = [mCursors objectForKey:[NSNumber numberWithInt:aCursor]];
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if (!result) {
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result = [nsCursorManager createCursor:aCursor];
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[mCursors setObject:result forKey:[NSNumber numberWithInt:aCursor]];
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}
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return result;
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NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
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}
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- (void) dealloc
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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[mCurrentMacCursor unset];
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[mCurrentMacCursor release];
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[mCursors release];
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NS_IF_RELEASE(sCursorImgContainer);
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[super dealloc];
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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@end
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